Consulta: "Growth"
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Does agricultural growth have a causal effect on manufacturing growth?
Provedor de dados: 31
Autores: Shifa,   Abdulaziz B.
Though the role of agricultural growth for manufacturing growth has been at the center of the discourse on economic development, empirically identifying the causal effect of agricultural growth on manufacturing growth has remained illusive for the correlation between the two doesn't necessarily imply causality. This paper attempts to overcome the identification problem. Since agriculture is heavily dependent on the weather, random weather variations are used as instruments to identify the causal impact of agricultural growth on manufacturing growth. Results show that agricultural growth has a significant positive impact on manufacturing growth. The impact is higher the higher is agriculture's share in the economy (as measured by GDP and employment share)....
Tipo: Conference Paper or Presentation
Palavras-chave: Agricultural Growth; Manufacturing Growth; Instrumental variable.; Community/Rural/Urban Development; International Development; O14; O25; Q10.
Ano: 2011
URL: http://purl.umn.edu/116003

Is Income Inequality Endogenous in Regional Growth?
Provedor de dados: 31
Autores: Hailu,   Yohannes G.; Kahsai,   Mulugeta S.; Gebremedhin,   Tesfa G.; Jackson,   Randall W.
This study focuses on testing the relationship between income inequality and growth within U.S. counties, and the channels through which such effects are observed. The study tests three hypotheses: (1) income inequality has an inverse relationship with growth; (2) regional growth adjustments are the channels through which the inequality and growth are equilibrated; and (3) income inequality is endogenous to regional growth and its adjustment. Results, based on a system of equations estimation, confirm the hypotheses that income inequality has a growth dampening effect; income inequality is endogenous to regional growth and growth adjustment; and the channels through which income inequality determines growth are regional growth adjustments, such as...
Tipo: Conference Paper or Presentation
Palavras-chave: Income inequality; Economic growth; Gini coefficient; Growth modeling; Population change; Per capita income; Community/Rural/Urban Development; Public Economics; I32; J15; O18; P25; R11; R23; R25; R51; R53; R58.
Ano: 2009
URL: http://purl.umn.edu/46320

Novel mechanisms of growth hormone regulation: growth hormone-releasing peptides and ghrelin
Provedor de dados: 56
Autores: Lengyel,A.-M.J.
Growth hormone secretion is classically modulated by two hypothalamic hormones, growth hormone-releasing hormone and somatostatin. A third pathway was proposed in the last decade, which involves the growth hormone secretagogues. Ghrelin is a novel acylated peptide which is produced mainly by the stomach. It is also synthesized in the hypothalamus and is present in several other tissues. This endogenous growth hormone secretagogue was discovered by reverse pharmacology when a group of synthetic growth hormone-releasing compounds was initially produced, leading to the isolation of an orphan receptor and, finally, to its endogenous ligand. Ghrelin binds to an active receptor to increase growth hormone release and food intake. It is still not known how...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth hormone; Growth hormone secretagogues; Ghrelin; Somatostatin; Hypothalamus.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006000800002

Sustainable growth rate in the strategic analysis of brewery industry
Provedor de dados: 31
Autores: Daszynska-Zygadlo,   Karolina; Slonski,   Tomasz.
An analysis of sustainable growth rate could considerably improve an assessment of Strategic Business Unit’s potential. The sustainable growth rate analysis enabled us to compare a possible growth rate within the brewery industry with a growth rate that firms had achieved. To demonstrate this in more depth, we presented a case study of the brewery industry in Poland and Czech Republic.
Tipo: Journal Article
Palavras-chave: Growth; Strategic analysis; Seer industry; Corporate growth; Research and Development/Tech Change/Emerging Technologies; GA; IN.
Ano: 2010
URL: http://purl.umn.edu/96858

Modelisation of oyster shell growth at 3 stations in the Patuxent river (Chesapeake Bay)
Provedor de dados: 5
Autores: Prou, Jean; Goulletquer, Philippe; Bacher, Cedric.
In oyster production area the determination of the stock, estimation of mortality and growth rates are determinant for knowledge of the fishery. Growth models can be used to predict the time to reach marketable size (76 mm in Chesapeake Bay). They are also important in term of management, when they can predict the future value of the stock (Askew, 1978). Oyster growth models can be built by analysing growth of natural oysters but absolute age is orten unknown. Many authors report growth data in Chesapeake Bay for suspended oyster culture. Unfortunalely, modelisation of the growth was not developed. In that study oyster, shell growth models have been established at three stations in the Patuxent river. Seasonal eITects on growth were integrated in the model
Tipo: Text
Palavras-chave: Modelisation; Oysters; Crassostrea virginica; Growth; Chesapeake Bay.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/00200/31109/29512.pdf

Emerging Africa: The Case of Ghana
Provedor de dados: 20
Autores: Kwasi Fosu, A.
The growth record of Ghana has been one of unevenness, as Table I.1 and Figure I.1 clearly indicate. With a reasonably high GDP growth in the 1950s and early 1960s, the Ghanaian economy began to experience a slowdown in GDP growth as of 1964. Growth was turbulent during much of the period since the mid-1960s and only began to stabilize by 1984. In 1966, 1972, 1975-1976, 1979, 1980-1983, the growth rate was negative. The years in which negative growth was experienced generally coincide with change in government and sometimes with policy changes or reversals. Negative growth was first recorded during the time of the first coup d’etat, with a forceful transfer of authority from the dictatorial Nkrumah regime to the military headed by General Ankrah. The...
Tipo: Working Paper
Palavras-chave: Economics.
Ano: 2001
URL: http://hdl.handle.net/1834/448

Empirical Analysis on the Determinants of Economic Growth in Shaanxi Province, China
Provedor de dados: 31
Autores: Fu,   Ji-xian.
Status of economic development in Shaanxi Province is analyzed, showing that Shaanxi Province has achieved the fast and stable economic growth; and total GDP and fixed assets investment have shown a sustainable growth. According to the time series statistics of Shaanxi Province in the years 1978-2008, Cobb-Douglas Function is used to carry out the empirical analysis on the contribution of fixed assets investment and labor input to economic growth of Shaanxi Province, China. Result shows that capital and labor input are the major driving forces for the economic growth of Shaanxi Province. In other words, economic growth mode of Shaanxi Province is still extensive. Economic growth of Shaanxi Province is increasingly dependent on capital investment and...
Tipo: Journal Article
Palavras-chave: Economic growth; Capital; Labor; Shaanxi Province; China; Agribusiness.
Ano: 2010
URL: http://purl.umn.edu/98000

Natural Disasters in a Two-Sector Model of Endogenous Growth
Provedor de dados: 31
Autores: Horii,   Ryo; Ikefuji,   Masako.
This paper studies sustainability of economic growth considering the risk of natural disasters caused by pollution in an endogenous growth model with physical and human capital accumulation. It is shown that economic growth is sustainable only if the tax rate on the polluting input is increased over time and that the long-term rate of economic growth follows an inverted V-shaped curve relative to the growth rate of the environmental tax. The social welfare is maximized under a positive steady-state growth in which faster accumulation of human capital compensates the productivity loss due to declining use of the polluting input.
Tipo: Working or Discussion Paper
Palavras-chave: Natural disasters; Human capital; Endogenous depreciation; Economic growth; Environmental Economics and Policy; Resource /Energy Economics and Policy; O41; O13; E22.
Ano: 2010
URL: http://purl.umn.edu/97337

MARKET SEGMENTATION: IDENTIFYING THE HIGH-GROWTH EXPORT MARKETS FOR U.S. AGRICULTURE
Provedor de dados: 31
Autores: Reed,   Michael R.; Salvacruz,   Joseph C.
A cluster analysis based on a five-year growth rate of agricultural imports from the United States was conducted on 86 countries and revealed two significant market segments for U.S. agriculture: the high-growth markets and the low-growth markets.  Multiple discriminant analysis was then used to test the significance of the countries' trade-related and macroeconomic variables to their market growth classification.  The discriminant function was used to predict the high-growth markets for U.S. agriculture in 1994.  High-growth markets for U.S. agriculture exhibit faster GDP and agricultural import growth rates, are relatively agriculturally self-sufficient, and are near the United States.  On the other hand, low-growth markets exhibit slower GDP and...
Tipo: Journal Article
Palavras-chave: International Relations/Trade.
Ano: 1994
URL: http://purl.umn.edu/26644

INTERNATIONAL SPILLOVERS, PRODUCTIVITY GROWTH AND OPENNESS IN THAILAND: AN INTERTEMPORAL GENERAL EQUILIBRIUM ANALYSIS
Provedor de dados: 31
Autores: Diao,   Xinshen; Rattso,   Jorn; Stokke,   Hildegunn Ekroll.
Thailand has experienced economic growth well above world averages for about 40 years. It is a challenge to understand the sources of this high growth path, and in particular why growth has not slowed down with assumed decreasing returns to capital. We develop an intertemporal general equilibrium model separating between agriculture and industry, and with open capital market and endogenous productivity growth to analyze the underlying adjustment mechanisms. Foreign technology spillover embodied in trade is assumed to be the driving force of the productivity growth, consistent with econometric evidence. The high growth experience is understood as a transition path with interaction between productivity growth, openness and capital investment. Counterfactual...
Tipo: Working or Discussion Paper
Palavras-chave: Intertemporal growth modelling; Endogenous productivity growth; Foreign technology spillover; Trade and growth; Thailand; International Development; O4; O4; O5.
Ano: 2002
URL: http://purl.umn.edu/16316

GROWTH THEORY AND ACCOUNTING FOR GROWTH OF THE TAIWANESE ECONOMY
Provedor de dados: 31
Autores: Lin,   Pei-Chien; Roe,   Terry L.
A growth accounting and an econometric exercise are used to provide insights into the evolution of the Taiwanese economy over the period 1966-96. The approach links the GDP function of  a multiple sector neoclassical growth model to growth accounting and, subsequently to the estimation of the parameters of this function. The growth accounting results show that the contribution of total factor productivity (TFP) to growth in GDP averaged about 32 percent over the period, and this contribution increased as the economy approached its long-run equilibrium during the decade of the 1980s, with evidence of some departure during 1991-96. Growth in TFP increased output growth in industry and services while growth in skilled labor benefited all sectors. Growth in...
Tipo: Working or Discussion Paper
Palavras-chave: Economic growth; Productivity; Technological change; International Development; Productivity Analysis; O3; O4; O5.
Ano: 1999
URL: http://purl.umn.edu/12968

Sources of Agricultural Productivity Growth in Central Asia
Provedor de dados: 31
Autores: Lerman,   Zvi; Sedik,   David J.
The paper examines agricultural production and productivity growth in two Central Asian countries – Tajikistan and Uzbekistan. Both countries are characterized by a significant shift of resources from the traditional Soviet model of collective agriculture to more market-compliant individual and family farming. In both countries, the beginning of the policy-driven switch to family farming around 1997 coincided with the beginning of recovery in agriculture, namely resumption of agricultural growth after a phase of transition decline since 1991. In addition to growth in total agricultural production, we also observe significant increases in productivity of both land and labor since 1997. These observations suggest that productivity growth may be attributable...
Tipo: Conference Paper or Presentation
Palavras-chave: Agricultural productivity; Agricultural growth; Family farms; Corporate farms; Comparative performance; Agrarian reforms; Transition countries; Central Asia; Tajikistan; Uzbekistan; Agricultural and Food Policy; Institutional and Behavioral Economics; Land Economics/Use; Productivity Analysis; P27; P31; P32; Q15; R14.
Ano: 2009
URL: http://purl.umn.edu/49312

The deeper meaning of growth in an organic context
Provedor de dados: 21
Autores: Freyer, Bernhard.
In this paper, which represents parts of a broader study on growth, we reflect upon the notion of growth in the organic agrofood chain from a philosophical point of view. Our objective is to identify characteristics of growth in an organic context. We first look at growth of the organic movement as a whole, and demand and supply. We then study the meaning of growth in the context of soils and plants. The IFOAM principles orient the meaning of growth in the organic agrofood system. With these reflections we wish to initiate a debate on a deeper understanding of growth in the organic movement.
Tipo: Conference paper, poster, etc.
Palavras-chave: Knowledge management.
Ano: 2014
URL: http://orgprints.org/24365/1/24365%20Freyer_MM.pdf

DOES RURAL JOB GROWTH LEAD THE ECONOMY OUT OF RECESSION?
Provedor de dados: 31
Autores: Golub,   Alla A.; Henderson,   Jason R.; Foster,   Kenneth A.
This paper explores the dynamics of rural and non-rural job growth to investigate if job growth starts in rural places, making it one of the leading indicators of economic growth. Empirical results provide mixed evidence. The mixed results of the Granger non-causality tests could be sensitive to the non-rural area definition. The relationship between rural job growth and non-rural job growth is not restricted to post-recession periods. Analysis of Bureau of Labor Statistics data suggests the spillover effects of non-rural growth are larger than the spillover effect of rural growth on non-rural areas. But this positive response of rural growth disappears over time and turns sharply negative. In the long run, “"backwash”" effects outweigh “"spread”" effects.
Tipo: Conference Paper or Presentation
Palavras-chave: Community/Rural/Urban Development.
Ano: 2004
URL: http://purl.umn.edu/20066

Measuring the Impact of Meat Packing and Processing Facilities in the Nonmetropolitan Midwest: A Difference-in-Differences Approach
Provedor de dados: 31
Autores: Artz,   Georgeanne M.; Orazem,   Peter F.; Otto,   Daniel M.
We measure how local growth in meatpacking and processing affects growth in local economies, government expenditures, and crime rates from 1990-2000 in nonmetropolitan counties of 12 Midwestern States.  Propensity score matching is used as a check on possible non-random placement of meatpacking and processing plants.  Results suggest that as the meat packing industry's share of a county's total employment and wage bill rises, total employment growth increases.  However, employment growth in other sectors slows, as does local wage growth.  There is some evidence that slower wage growth swamps the employment growth so that aggregate income grows more slowly. We find no evidence that growth in the industry changes the growth rates for crime or government...
Tipo: Working or Discussion Paper
Palavras-chave: Livestock Production/Industries.
Ano: 2005
URL: http://purl.umn.edu/18219

Inference Based on Alternative Bootstrapping Methods in Spatial Models with an Application to County Income Growth in the United States
Provedor de dados: 31
Autores: Monchuk,   Daniel C.; Hayes,   Dermot J.; Miranowski,   John A.; Lambert,   Dayton M.
This study examines aggregate county income growth across the 48 contiguous states from 1990 to 2005. To control for endogeneity we estimate a two-stage spatial error model and infer parameter significance by implementing a number of spatial bootstrap algorithms. We find that outdoor recreation and natural amenities favor positive growth in rural counties, densely populated rural areas enjoy stronger growth, and property taxes correlate negatively with rural growth. We also compare estimates from the aggregate county income growth model with per capita income growth and find that these two growth processes can be quite different.
Tipo: Working or Discussion Paper
Palavras-chave: County income growth; Rural development; Spatial bootstrapping.; Community/Rural/Urban Development.
Ano: 2010
URL: http://purl.umn.edu/62189

An Analysis of Regional Economic Growth in the U.S. Midwest
Provedor de dados: 31
Autores: Monchuk,   Daniel C.; Miranowski,   John A.; Hayes,   Dermot J.; Babcock,   Bruce A.
In this paper we examine some of the economic forces that underlie economic growth at the county level. In an effort to describe a much more comprehensive regional economic growth model, we address a variety of different growth hypotheses by introducing a large number of growth related variables. When formulating our hypotheses and specifying our growth model we make liberal use of GIS (geographical information systems) mapping software to "paint" a picture of where growth spots exist. Our empirical estimation indicates that amenities, state and local tax burdens, population, amount of primary agriculture activity, and demographics have important impacts on economic growth.
Tipo: Working or Discussion Paper
Palavras-chave: Amenities; Fiscal policy; Rural income growth; Community/Rural/Urban Development.
Ano: 2005
URL: http://purl.umn.edu/18552

A bestiary of non-linear functions for growth analysis
Provedor de dados: 17
Autores: C. E. Timothy Paine; Toby Marthews; Deborah Vogt; Drew Purves; Mark Rees; Andy Hector; Lindsay Turnbull.
Plant growth is an essential ecological process, integrating across scales from physiology to community dynamics. Predicting the growth of plants is essential to understand a wide range of ecological issues, including competition, plant-herbivore interactions and ecosystem functioning.&amp;#xd;&amp;#xa;A challenge in modeling plant growth is that growth rates almost universally decrease with increasing size, for a variety of reasons. Traditional analyses of growth are hampered by the need to remain within the structures of linear models, which handle this slowing poorly. We demonstrate the implementation of a variety of non-linear models that are more appropriate for modeling plant growth than are the traditional, linear,...
Tipo: Presentation
Palavras-chave: Ecology; Plant Biology.
Ano: 2010
URL: http://precedings.nature.com/documents/5257/version/1

Decomposing CO2 emissions data into a pair of logistic growth pulses
Provedor de dados: 17
Autores: Gleb G. Alexandrov.
Numerous scenarios of emissions growth presume that it can not grow infinitely: there are certain limits that may not or must not be exceeded. Applying the theory of pulsing logistic growth, I detected two pulses of logistic growth. This led me to the conclusion that constructing a scenario of emissions growth one should pay attention to the fact that limits to their growth do not remain constant.
Tipo: Poster
Palavras-chave: Earth &amp; Environment.
Ano: 2010
URL: http://precedings.nature.com/documents/4306/version/1

Trust and Growth
Provedor de dados: 31
Autores: Dincer,   Oguzhan C.; Uslaner,   Eric.
Using data from US states, we find a positive relationship between trust and growth. According to our results, a 10 percentage point increase in trust increases the growth rate of per capita income by 0.5 percentage point, growth rate of housing prices by 1.25 percentage points, and the growth rate of employment by 2.5 percentage points over a decade.
Tipo: Working or Discussion Paper
Palavras-chave: Trust; Economic Growth; International Development; Z13; R11.
Ano: 2007
URL: http://purl.umn.edu/9094

Economic Growth in the Philippines: A Spatial Econometrics Analysis at the Provincial Level, 1991 – 2000.
Provedor de dados: 31
Autores: Pede,   Valerien O.; Huelgas,   Zenaida M.; Villano,   Lorena; Garcia,   Cornelia; McKinley,   Justin D.; Mohanty,   Samarendu.
Investigating the determinants of economic growth remains a long research tradition in the economic growth literature. Most studies in this literature have tried to link economic growth and different economic factors using either neoclassical growth theories or endogenous growth approaches. These studies apply these growth theories to identify the factors responsible for the observed differences/disparities between regions or countries. While early studies focused on cross-country analyses, the recent most studies consider regions or sub-national entities as unit of analysis. This has raised the question of whether theories developed for cross-country analysis could be automatically applied for regional or sub-national analysis. Given the profound...
Tipo: Conference Paper or Presentation
Palavras-chave: Community/Rural/Urban Development; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods.
Ano: 2011
URL: http://purl.umn.edu/103651

Market opportunities for African agriculture: a general equilibrium examination of demand-side constraints on agricultural growth in East and Southern Africa
Provedor de dados: 31
Autores: Diao,   Xinshen; Dorosh,   Paul A.; Rahman,   Shaikh Mahfuzur.
In today’s more integrated world economy, agricultural growth in Africa depends not only on raising productivity and increasing production, but on increasing the competitiveness of African agriculture in the global market and expanding its market opportunities within Africa. Unless demand increases, African agriculture cannot grow at a rate sufficient to reduce poverty and hunger to any substantial degree. The accelerated economic growth in Africa in recent years might offer increased opportunities for agriculture from domestic demand. This research report focuses on demand-side constraints on African agricultural growth and their implications for three broad agricultural development strategies: promoting traditional exports, developing nontraditional...
Tipo: Report
Palavras-chave: Agriculture; Africa; International trade; International Development.
Ano: 2007
URL: http://purl.umn.edu/37877

Artificial family selection based on growth rate in cultivated lines of Litopenaeus vannamei (Decapoda, Penaeidae) from Venezuela
Provedor de dados: 74
Autores: De Donato,Marcos; Ramirez,Raúl; Howell,Chris; Verginelli,Roberto; Orta,Tomás; Cabrera,Saúl; Mata,Enrique; Manrique,Ramón.
We investigated the effects of family selection on the growth rates of four genetic lines of Litopenaeus vannamei, the Pacific white shrimp, from Venezuela. The mean family weight at selection was 16.79 g and the mean growth rate was 0.169 g d-1 at a mean age of 138 days. The mean growth rates per generation were 0.141 g d-1 for the parental generation (P0), 0.173 g d-1 for the F1 and 0.191 g d-1 for the F2. Survival varied from 83.3% to 94.4%. There were statistically significant differences between lines, with lines B and C, growing at higher temperatures and lower salinities, showing the fastest growth. Regression analysis between growth rate and age for each genetic line showed high r² values, but smaller than those shown between growth rate and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Family selection; Genetic improvement; Growth rate; Litopenaeus vannamei.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000500009

Variability and controls of otolith growth in the anchovy of the Bay of Biscay
Provedor de dados: 5
Autores: Petitgas, Pierre; Grellier, Patrick; Duhamel, Erwan; Masse, Jacques; Doray, Mathieu.
Individual fish growth depends on internal population factors such as phenotypic variability as well as external factors such as past environmental conditions (temperature, food) and selective mortality (predation or fishing). In the anchovy, growth in the first year is key to population dynamics as it determines the potential energy allocated to reproduction as well as the capacity to occupy off-shore habitats. Further, in the recent past, the anchovy in the bay of Biscay has experienced collapse and recovery and the role played by growth in this history is unknown. Since 2001 with the spring acoustic survey series PelGas, we have monitored individual fish growth by measuring in the otolith the increments between annual rings, in addition to age...
Tipo: Text
Palavras-chave: Anchovy; Biscay; Otoliths; Growth; Metapopulation.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00114/22550/20236.pdf

Effects of Cattle Slurry on the Growth Potential and Clover Proportion of Organically Managed Grass–Clover Leys
Provedor de dados: 21
Autores: Steinshamn, Håvard.
The growth potential of grass-clover leys as influenced by cattle slurry application and clover content was studied in field experiments during three growing seasons at four locations. A grassland growth model was used to quantify growth potential and to separate the influence of weather variables from factors related to the plant stand. Application of cattle slurry increased the initial relative growth rate (R-s), on average from 0.21 to 0.23 g g(-1) day(-1) of the spring growth. In regrowth the effect of cattle slurry was less pronounced. The effect of cattle slurry declined with increasing R-s of the unfertilized treatment and rose with increasing rate of ammonium N applied by the slurry. The positive response to cattle slurry application on R-s was...
Tipo: Journal paper
Palavras-chave: Pasture and forage crops; Farm nutrient management; Composting and manuring.
Ano: 2001
URL: http://orgprints.org/6009/1/cattle_slurry_growth_rate_acta_scand_steinshamn_2001.pdf

New Economy Growth Decomposition in the U.S.
Provedor de dados: 31
Autores: Adelaja,   Adesoji O.; Hailu,   Yohannes G.; Abdulla,   Majd.
The drivers of economic growth in what is called the New Economy has become an important policy question. As communities across the country face economic challenges and a new economic reality, the question of what works in the New Economy has emerged. This study aims to provide growth decomposition in the New Economy to identify key drivers of growth. It provides a conceptual, theoretical and empirical discussion of growth in the New Economy to solidify the theory and empirics of New Economy growth decomposition. Results suggest that growth in population, income and employment are mostly synergistic; innovation and talent are potent in the New Economy; population dynamics, especially in the young and retiree segment of the population are tied to local...
Tipo: Conference Paper or Presentation
Palavras-chave: New Economy; Growth decomposition; Economic policy; Talent; Innovation; Creative class; Green infrastructure; Synergistic growth; Public Economics.
Ano: 2009
URL: http://purl.umn.edu/49579

Mapping and validation of molecular markers of genes Dt1 and Dt2 to determine the type of stem growth in soybean
Provedor de dados: 1
Autores: Vicente, Dorival; Schuster, Ivan; Lazzari, Fabiane; Paranzini, Jonas Pedro Dolfini; Oliveira, Marco Antonio Rott de; Prete, Cássio Egídio Cavenaghi.
The type of stem growth in soybean is a distinguishing feature of cultivars. The genes Dt1 and Dt2 affect the termination of the stem, and the types of growth are classified as determinate, semi-determinate and indeterminate. Phenotypic characterization of the type of growth is complex and is occasionally erroneously described. The objective of this study was to map and validate molecular markers to classify the type of soybean growth to facilitate the description of cultivars and genotypic selection. Two populations were used for mapping and validation of molecular markers F2:3: T 117 (semi-determinate growth type) x Igra RA 518 RR (indeterminate growth type) and CD 235RR (determinate growth type) x Igra RA 518 RR. The study demonstrates that the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Determinate growth; Semi-determinate growth; Indeterminate growth; SAM.
Ano: 2016
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/26216

Взаимозависимость интенсивности обмена и скорости роста у животных
Provedor de dados: 13
Autores: Винберг Г. Г.
It has been shown that if net growth efficiency (K'') is constant, the growth curve would be of parabolic type. In this case dw/dt = N*w*a/b, where T1*K''/(1-K'') = N. T1 - a coefficient equal to the expenditures for metabolism of an animal unit weight. When at growth the weight approaches the definitive value than K'' is not constant but decreases from maximum value at the beginning K''m to zero at the end of growth. So (formula). The value of T1 and K'' can be derived independently after the results of physiological measurements of metabolism. The given relations make it possible to determine parameters of growth equations with T1 and K'' known, and to obtain the intensity of metabolism from the data of growth studies. The examples of calculations...
Tipo: Journal Contribution
Ano: 1968
URL: http://10.0.0.194:8080/dspace/handle/99011/3020

Regional Growth Impacts on Agricultural Land Development: A Spatial Model for Three States
Provedor de dados: 31
Autores: Hailu,   Yohannes G.; Brown,   Cheryl.
In this study we attempt to understand the relationship between regional growth in population, employment, and per capita income, and farmland development in Maryland, Pennsylvania, and West Virginia. A spatial simultaneous equations model is estimated using county-level data. Results indicate that while county income growth and agricultural land value increases in neighboring counties increase the rate of farmland loss, growth in county agricultural land values, increases in agricultural land density in neighboring counties, and increases in agricultural income per farm reduce farmland losses. Farmland protection policies were not significant in reducing agricultural land development. This approach, focused on regional growth, provides insight into...
Tipo: Journal Article
Palavras-chave: Farmland protection; Regional growth; Rural development; Spatial growth equilibrium model; Land Economics/Use.
Ano: 2007
URL: http://purl.umn.edu/10161

AN ANALYSIS OF REGIONAL ECONOMIC GROWTH IN THE US MIDWEST
Provedor de dados: 31
Autores: Monchuk,   Daniel C.; Miranowski,   John A.; Hayes,   Dermot J.; Babcock,   Bruce A.
In this paper we examine more closely some of the forces that underlie economic growth at the county level. In an effort to describe a much more comprehensive regional economic growth model, we address a variety of different growth hypotheses by introducing a large number of growth related variables. When formulating our hypotheses and specifying our growth model we make liberal use of GIS mapping software to “"paint"” a picture of where growth spots exist and why. Our empirical estimation indicates amenities, state and local tax burdens, population, amount of agricultural activity, and demographics have important economic growth impacts.
Tipo: Conference Paper or Presentation
Palavras-chave: Community/Rural/Urban Development.
Ano: 2004
URL: http://purl.umn.edu/20369

PRODUCTIVITY GROWTH AND INPUT MIX CHANGES IN FOOD PROCESSING
Provedor de dados: 31
Autores: Adelaja,   Adesoji O.
To examine productivity growth in New Jersey's food-processing sector, this study conducts a joint analysis of total and partial factor productivity indexes.  Results indicate growing material intensity, declining labor and capital intensities, and relatively slow material productivity growth.  However, due to the high cost share of material inputs, material productivity growth contributed more to total factor productivity growth than did growth in the productivity of any other input.  In fact, almost half of the growth in overall productivity is attributed to material productivity growth.  Results also suggest that the 1973 decline in total factor productivity was characterized by greater decline in material productivity than in the productivities of...
Tipo: Journal Article
Palavras-chave: Agribusiness; Productivity Analysis.
Ano: 1992
URL: http://purl.umn.edu/28852

Accelerated Productivity Growth Offsets Decline in Resource Expansion in Global Agriculture
Provedor de dados: 31
Autores: Fuglie,   Keith O.
Rapid increases in agricultural commodity prices during 2006-08 raised concerns that agricultural productivity growth may not be keeping up with increasing demand for agricultural commodities. ERS has developed a new index of total factor productivity (TFP) in global agriculture to provide a more comprehensive understanding of longrun sources of agricultural output growth. ERS research shows that the average rate of growth in global agricultural TFP has accelerated in recent decades and accounts for an increasing share of growth in agricultural production. Faster TFP growth has offset declining growth in agricultural land, labor, and other resources, although TFP growth across countries and global regions remains unevenly distributed.
Tipo: Article
Palavras-chave: Productivity Analysis.
Ano: 2010
URL: http://purl.umn.edu/121897

Growth of the Agricultural Firm: Problems and Theories
Provedor de dados: 31
Autores: Renborg,   Ulf.
This review of growth theories of the firm is directed towards those theories of interest for managerial direction of the growth process of agricultural firms. It starts with a discussion of growth, growth directions, the growth process and associated problems. From this an analytical procedure is built up. which states a set of desirable features that theories suitable to guide managers of agricultural firms should contain. In the light of these, the following theories of firm growth are discussed: the traditional neo-classical approach to firm size, extensions of this approach, the growth theories of Edith Penrose and Robin Marris, and the combination of investment and finance theory possible with various types of mathematical programming and cybernetic...
Tipo: Journal Article
Palavras-chave: Agribusiness.
Ano: 1970
URL: http://purl.umn.edu/9633

U.S. Agricultural Growth and Productivity: An Economywide Perspective
Provedor de dados: 31
Autores: Shane,   Mathew; Roe,   Terry L.; Gopinath,   Munisamy.
Growth of U.S. agriculture is dependent on increases in productivity, three-fourths of which is accounted for by public investment in agricultural research and development (R&amp;D) and infrastructure, according to this research. Productivity growth in U.S. agriculture benefits consumers by putting downward pressure on real primary and processed food prices. Moreover, maintaining export growth in international markets relies on relative productivity growth against major competitors. Public investments in agricultural R&amp;D have stagnated since the mid-1970's, raising questions about sustained productivity growth in U.S. agriculture.
Tipo: Report
Palavras-chave: Agricultural growth; Agricultural research and development; Total factor productivity growth; Public investments; International trade negotiations; International Development; Productivity Analysis.
Ano: 1998
URL: http://purl.umn.edu/34047

Decomposition of Agricultural Labor Productivity Growth and its Regional Disparity in China
Provedor de dados: 31
Autores: Xin,   Xiangfei; Qin,   Fu.
This paper studies the regional disparity of China's agricultural productivity growth by decomposing it into technical changes, efficiency changes and input accumulation per worker. The convergence test is also used to analyze the determinants of regional disparity. The paper finds that during 1987 and 2005, although the growth of China’s agricultural labor productivity mainly depended on the accumulation of inputs, technical changes contributed more to regional disparities in agricultural productivity growth. Improving efficiency to promote TFP growth is important for agricultural labor productivity growth for the three regions—Eastern, Central and Western of China. The increase in inputs for Western China, and the improvement in technical change for...
Tipo: Conference Paper or Presentation
Palavras-chave: Agricultural labor productivity growth; Decomposition; Regional disparity; Productivity Analysis.
Ano: 2009
URL: http://purl.umn.edu/51047

Employment and Growth Effects of Tax Reforms in a Growth-Matching Model
Provedor de dados: 31
Autores: Birk,   Angela; Michaelis,   Jochen.
This paper explores how revenue-neutral tax reforms impact employment and economic growth in models of exogenous and endogenous growth and search frictions on the labor market. We show that (i) a cut in the payroll tax financed by an increase in the wage tax lowers both equilibrium employment and the equilibrium growth rate, that (ii) a higher energy tax combined with a cut in wage taxes boosts employment but has an ambiguous effect on growth, and that (iii) a higher energy tax combined with a cut in payroll taxes enhances employment but mitigates economic growth.
Tipo: Working or Discussion Paper
Palavras-chave: Search unemployment; Growth; Tax reform; Labor and Human Capital; Public Economics; E6; H2; J6; O4.
Ano: 2002
URL: http://purl.umn.edu/26324

Growth of values-based organic food chains
Provedor de dados: 21
Autores: Noe, Egon.
In HealthyGrowth, eighteen mid-scale and four regional value chains for organic food are investigated in order to learn how they are able to combine values and increasing volumes.  • Managing specific challenges related to growth  • Understanding success factors  • Fostering cooperation and partnership in values-based food chains
Tipo: Other
Palavras-chave: Farming Systems.
Ano: 2016
URL: http://orgprints.org/30857/1/healthygrowth2015%20leaflet.pdf

Allometric larval growth of the bottom-dwelling catfish Lophiosilurus alexandri Steindachner, 1876 (Siluriformes: Pseudopimelodidae)
Provedor de dados: 83
Autores: Mello,Gabriel Caetano Guimarães de; Santos,José Enemir dos; Guimarães-Cruz,Rodrigo José; Godinho,Alexandre Lima; Godinho,Hugo Pereira.
ABSTRACT We investigated the early life growth pattern of pacamã, Lophiosilurus alexandri , a catfish endemic to the rio São Francisco basin, Brazil. Pacamã larvae were kept in a galvanized trough for 29 days after hatching. We collected approximately 10 larvae daily (total number = 285). We obtained from each specimen the total length (independent variable) and 11 other body measurements (dependent variables). We performed linear regressions on the log-transformed data to determine the growth pattern of the body measurements and the respective inflexion point on the growth curves. Except for trunk length, trunk width and yolk sac volume, the remaining body measurements showed a positive allometric growth coefficient up to the respective IP followed by a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Early life; Fish rearing; Larval development; Pacamã; Rio São Francisco.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000400677

Growth Characteristics of Tetrahymena paravorax
Provedor de dados: 19
Autores: Suzuki, Kazu-michi; Suizu, Futoshi; Takahashi, Tadao; Kosaka, Toshikazu; Hosoya, Hiroshi.
Palavras-chave: Axenic culture; Cell growth; Growth factor; Initial cell density; Tetrahymena paravorax.
Ano: 1996
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/251

Growth-Inhibitory Activites in Tetrahymena Culture Medium of the Stationary Phase
Provedor de dados: 19
Autores: Suzuki, Kazu-michi; Nishihara, Naohisa; Takahashi, Tadao; Kosaka, Toshikazu; Hosoya, Hiroshi.
Palavras-chave: Cell growth; Growth inhibition; PH; Stationary phase; Tetrahymena.
Ano: 1996
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/248

Growth of champa fruit under agroecological conditions of Miraflores, Boyacá, Colombia.
Provedor de dados: 21
Autores: Balaguera-López, Helber Enrique; Arévalo, Aníbal Herrera; Cortés-Moreno, Daniel.
The objective of this work was to analyze the growth of champa fruit (Campomanesia lineatifolia) as a function of growing-degree days (GDD) in the municipality of Miraflores, in Boyacá, Colombia. Thirty trees were selected at random, and 100 flowers in full bloom were marked in each tree. From the 26th day after flowering until harvest, 10 samples were taken every 15 days to determine the fruit parameters and growth rate. Temperature was recorded to calculate the GDD. From flowering until harvest, 1,489.1 GDD were accumulated over 145 days. Dry and fresh matter mass of pulp, seed, and total fruit were fitted to a logistic growth model, and three growth stages (S1, S2 and S3) were defined. In the S1, growth was slow, and the relative growth remained nearly...
Tipo: Journal paper
Palavras-chave: Production systems; Buildings and machinery; Fruit and berries.
Ano: 2012
URL: http://orgprints.org/28502/1/Balaguera-L%C3%B3pez_growth.pdf

Total Factor Productivity Growth and the Environment: A Case for Green Growth Accounting
Provedor de dados: 31
Autores: Xepapadeas,   Anastasios; Tzouvelekas,   Vangelis; Vouvaki,   Dimitra.
We examine whether the use of the environment, proxied by CO2 emissions, as a factor of production contributes, in addition to conventional factors of production to output growth, and thus it should be accounted for in total factor productivity growth (TFPG) measurement and deducted from the .residual. A theoretical framework of growth accounting methodology with environment as a factor of production which is unpaid in the absence of environmental policy is developed. Using data from a panel of 23 OECD countries, we show that emissions. growth have a statistically significant contribution to the growth of output, that emission augmenting technical change is present along with labor augmenting technical change, and that part of output growth which is...
Tipo: Working or Discussion Paper
Palavras-chave: Solow Residual; Total Factor Productivity Growth; Growth; Environment; Green Growth Accounting; Environmental Economics and Policy; O47; Q2.
Ano: 2007
URL: http://purl.umn.edu/9319

Growth of German dairy farms under the EU milk quota
Provedor de dados: 31
Autores: Breustedt,   Gunnar; Mees,   Martin.
We estimate determinants of growth among German dairy farms between 1997 und 2005 under the EU milk quota system. Higher milk yield per cow, more family labour, and higher milk prices increase the growth rate of growing farms, ceteris paribus. Older growing farmers tend to grow at lower rates. In line with Weiss’ findings (1999) for Austrian farms, Gibrat’s Law of relative firm growth being independent of initial firm size does not hold for our subsample of farms growing in milk production, either: the growth rate is quite high for small farms and has a minimum for farms around 325,000 kg of initial quota. For the 16% of growing farms that have more initial quota the growth rate increases up to some out-of-sample maximum. We corrected for selection bias by...
Tipo: Conference Paper or Presentation
Palavras-chave: Keywords: farm growth; Gibrat’s Law; Milk quota; Multinomial logit; Selection bias; Agricultural and Food Policy; Farm Management; Land Economics/Use.
Ano: 2010
URL: http://purl.umn.edu/61080

Investigating the Sources of Agricultural Growth in Africa: Factor Accumulation, Total Factor Productivity, and Technology Absorption
Provedor de dados: 31
Autores: Nkamleu,   Guy Blaise.
This paper investigates sources and determinants of agricultural growth in Africa, concentrating on the growth path during the last three decades. The analysis employs the broader framework provided by empirical growth literature and recent developments in Total Factor Productivity (TFP) measurement to search for fundamental determinants of growth in African agriculture. One main contribution and new findings in this analysis is the quantification of the contribution of the productivity growth and the contribution of different inputs such as land, labor, tractor and fertilizer in the agricultural growth. Growth accounting computation highlights the fact that factor accumulation rather than TFP accounts for a large share of agricultural output growth and...
Tipo: Conference Paper or Presentation
Palavras-chave: Growth accounting; TFP; Factor accumulation; Capital absorption; Africa; Agricultural and Food Policy; Agricultural Finance; Community/Rural/Urban Development; Demand and Price Analysis; Farm Management; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; International Relations/Trade; Land Economics/Use; Livestock Production/Industries; Marketing; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies; N50; O47; D24.
Ano: 2008
URL: http://purl.umn.edu/52108

Do Preferential Trade Agreements Promote Growth? An Evaluation of the Caribbean Basin Economic Recovery Act
Provedor de dados: 31
Autores: Dean,   Judith M.
The few empirical studies which examine the effects of preferential trade liberalization on growth find no direct relationship between membership in a PTA and growth across countries. This is somewhat surprising, given the large literature which argues that trade liberalization is likely to encourage more rapid growth. However, sensitivity analysis has shown that this link between freer trade and growth may be indirect, as freer trade strongly increases investment, and higher investment strongly increases growth. This paper tests for both direct and indirect effects of preferential trade liberalization on growth and investment, by examining the impact of the Caribbean Basin Economic Recovery Act--a non-reciprocal PTA implemented by the U.S. in 1984 to...
Tipo: Working or Discussion Paper
Palavras-chave: International Development; International Relations/Trade.
Ano: 2002
URL: http://purl.umn.edu/15867

GROWTH OF GERMAN DAIRY FARMS UNDER THE EU MILK QUOTA
Provedor de dados: 31
Autores: Breustedt,   Gunnar; Mees,   Martin.
B3_3
Tipo: Conference Paper or Presentation
Palavras-chave: Farm growth; Gibrat's Law; Milk quota; Selection bias; Agricultural and Food Policy; Research Methods/ Statistical Methods.
Ano: 2010
URL: http://purl.umn.edu/93950

Growth rings in cerrado woody species: occurrence and anatomical markers
Provedor de dados: 49
Autores: Marcati,Carmen Regina; Oliveira,Julia Sonsin; Machado,Silvia Rodrigues.
Growth ring occurrence was investigated in 48 representative species of cerrado in the state of São Paulo, Brazil. We characterized growth ring markers and described the growth layer structure of the basal portion of the most developed stem branches in woody plants. Growth rings were poorly defined in 33%, well defined in 61% and not discernable in 6% of the species studied. Various anatomical features were used as growth markers, such as: thick-walled latewood fibres; radially flattened latewood fibres; fibre zones; distended rays; marginal bands of axial parenchyma; marginal lines of parenchyma; and closeness of the narrow bands of scalariform parenchyma. In a single species, different growth ring markers often occurred together. Within growth layers,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerrado; Increment zones; Habit; Phenology; Wood anatomy.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032006000300001

Variation in Size and Growth of the Great Scallop Pecten maximus along a Latitudinal Gradient
Provedor de dados: 5
Autores: Chauvaud, Laurent; Patry, Yann; Jolivet, Aurelie; Cam, Emmanuelle; Le Goff, Clement; Strand, Oivind; Charrier, Gregory; Thebault, Julien; Lazure, Pascal; Gotthard, Karl; Clavier, Jacques.
Understanding the relationship between growth and temperature will aid in the evaluation of thermal stress and threats to ectotherms in the context of anticipated climate changes. Most Pecten maximus scallops living at high latitudes in the northern hemisphere have a larger maximum body size than individuals further south, a common pattern among many ectotherms. We investigated differences in daily shell growth among scallop populations along the Northeast Atlantic coast from Spain to Norway. This study design allowed us to address precisely whether the asymptotic size observed along a latitudinal gradient, mainly defined by a temperature gradient, results from differences in annual or daily growth rates, or a difference in the length of the growing...
Tipo: Text
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00087/19861/17506.pdf

Predicting growth rates and growth boundary of Listeria monocytogenes - An international validation study with focus on processed and ready-to-eat meat and seafood
Provedor de dados: 5
Autores: Mejlholm, Ole; Gunvig, Annemarie; Borggaard, Claus; Blom-hanssen, Jesper; Mellefont, Lyndal; Ross, Tom; Leroi, Francoise; Else, Tony; Visser, Diana; Dalgaard, Paw.
The performance of six predictive models for Listeria monocytogenes was evaluated using 1014 growth responses of the pathogen in meat, seafood, poultry and dairy products. The performance of the growth models was closely related to their complexity i.e. the number of environmental parameters they take into account. The most complex model included the effect of nine environmental parameters and it performed better than the other less complex models both for prediction of maximum specific growth rates (mu(max) values) and for the growth boundary of L. monocytogenes. For this model bias and accuracy factors for growth rate predictions were 1.0 and 1.5, respectively, and 89% of the growth/no-growth responses were correctly predicted. The performance of three...
Tipo: Text
Palavras-chave: Predictive models; Bias and accuracy factors; Correct prediction percentage; Growth/no-growth predictions; Psi (psi) value.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00011/12218/11422.pdf

In situ growth of deep-sea octocorals after the Deepwater Horizon oil  spill
Provedor de dados: 5
Autores: Girard, Fanny; Cruz, Rafaelina; Glickman, Orli; Harpster, Tyler; Fisher, Charles R.
Although the role of deep-sea corals in supporting biodiversity is well accepted, their ability to recover from anthropogenic impacts is still poorly understood. An important component of recovery is the capacity of corals to grow back after damage. Here we used data collected as part of an image-based long-term monitoring program that started in the aftermath of the Deepwater Horizon oil spill to develop a non-destructive method to measure in situ growth rates of Paramuricea spp. corals and characterize the impact of the spill on growth. About 200 individual coral colonies were imaged every year between 2011 and 2017 at five sites (three that were impacted by the spill and two that were not). Images were then used to test different methods for measuring...
Tipo: Text
Palavras-chave: Corals; Plexauridae; Growth rates; Non-destructive methods; Imagery; Anthropogenic impact.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00484/59581/62577.pdf

Sources of Agricultural Productivity Growth in Central Asia: The Case of Tajikistan and Uzbekistan
Provedor de dados: 31
Autores: Lerman,   Zvi; Sedik,   David J.
The paper examines agricultural production and productivity growth in two Central Asian countries – Tajikistan and Uzbekistan. Both countries are characterized by a significant shift of resources from the traditional Soviet model of collective agriculture to more market-compliant individual and family farming. In both countries, the beginning of the policy-driven switch to family farming around 1997 coincided with the beginning of recovery in agriculture, namely resumption of agricultural growth after a phase of transition decline since 1991. In addition to growth in total agricultural production, we also observe significant increases in productivity of both land and labor since 1997. These observations suggest that productivity growth may be attributable...
Tipo: Working or Discussion Paper
Palavras-chave: Agricultural productivity; Agricultural growth; Family farms; Corporate farms; Comparative performance; Agrarian reforms; Transition countries; Central Asia; Tajikistan; Uzbekistan; Agricultural and Food Policy; Community/Rural/Urban Development; Food Security and Poverty; International Development; Land Economics/Use; Productivity Analysis; P27; P31; P32; Q15; R14.
Ano: 2009
URL: http://purl.umn.edu/54713

Age of Jack mackerel Trachrus murphyi (Carangidae) using daily growth rings in sagittae otoliths
Provedor de dados: 72
Autores: Cisterna,Lilian; Arancibia,Hugo.
ABSTRACT Growth of Jack mackerel (Trachurus murphyi) was estimated using daily growth rings in fish collected in central-south Chile from 2004 to 2011. The von Bertalanffy growth curve at length for both sexes (n=210 individuals) is   FLt = 75*[1-e -0.16(  t +0.13)] where FLt is fork length (cm) at time t (years).
Tipo: Journal article
Palavras-chave: Age; Chile; Daily growth rings; Jack mackerel; Sagittae otoliths; Trachurus murphyi.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382017000100028

SOURCES OF PRODUCTIVITY GROWTH DURING THE TRANSITION TO ALTERNATIVE CROPPING SYSTEMS
Provedor de dados: 31
Autores: Jaenicke,   Edward C.; Drinkwater,   Laurie E.
Traditional measures of productivity growth may not fully account for all sources of growth during the transition from conventional to alternative cropping systems. This paper treats soil quality as part of the production process and incorporates it directly into rotational measures of productivity growth. An application to data from an experimental cropping system in Pennsylvania suggests that both experimental learning and soil-quality improvements were important sources of growth during the system's transition.
Tipo: Journal Article
Palavras-chave: Productivity Analysis.
Ano: 1999
URL: http://purl.umn.edu/31284

THE ROAD TO PRO-POOR GROWTH IN ZAMBIA: PAST LESSONS AND FUTURE CHALLENGES
Provedor de dados: 31
Autores: Thurlow,   James; Wobst,   Peter.
Zambia is one of the poorest countries in Sub-Saharan Africa. Almost three-quarters of the population were considered poor at the start of the 1990s, with a vast majority of these people concentrated in rural and remote areas. This extreme poverty arose in spite of Zambia’s seemingly promising prospects following independence. To better understand the failure of growth and poverty-reduction this paper first considers the relationship between the structure of growth and Zambia’s evolving political economy. A strong urban-bias has shaped the country’s growth path leading to a economy both artificially and unsustainably distorted in favor of manufacturing and mining at the expense of rural areas. For agriculture it was the maize-bias of public policies that...
Tipo: Working or Discussion Paper
Palavras-chave: Copper mines and mining; Poverty alleviation; Africa; Zambia; Manufacturing industries; Spatial analysis; Household surveys; Agricultural growth; International Development.
Ano: 2004
URL: http://purl.umn.edu/60169

RELATIONSHIP OF NON-BASIC SECTOR INCOME GROWTH AND THE GAMING SECTOR
Provedor de dados: 31
Autores: Harris,   Thomas R.; Narayanan,   Rangesan.
Nevada disaggregated export-base multipliers were derived to determine if and to what extent non-basic sector income growth was impacted by income growth of selected basic sectors.  Results indicate that growth in the Hotel and Gaming Sector is statistically significant and substantially higher than growth in the Other Basic Industries Sector.
Tipo: Conference Paper or Presentation
Palavras-chave: Community/Rural/Urban Development.
Ano: 1999
URL: http://purl.umn.edu/35731

Stunted Growth: Natural Resource Concentration, Economic Growth, and Dutch Disease in the Southeastern United States
Provedor de dados: 31
Autores: Elliott,   Vaughn M., II; Hartarska,   Valentina M.; Bailey,   Conner.
We study the link between economic growth and resource endowment in the southeastern United States and find signs of Dutch Disease. Using data for 815 counties in this region, we focus attention on the connection between economic growth and forest resources. Our data support the Dutch Disease theory that economic reliance on natural resources contributes to low economic growth.
Tipo: Conference Paper or Presentation
Palavras-chave: Community/Rural/Urban Development; Resource /Energy Economics and Policy.
Ano: 2008
URL: http://purl.umn.edu/6494

COMPETITIVE PRESSURE AND PRODUCTIVITY GROWTH: THE CASE OF THE FLORIDA VEGETABLE INDUSTRY
Provedor de dados: 31
Autores: Kalaitzandonakes,   Nicholas G.; Taylor,   Timothy G.
The relationship between the degree of competitive market pressure and the rate of productivity growth is empirically investigated with a case study of the Florida fresh winter vegetable industry. The results indicate that crops which faced considerable competitive pressure exhibited significant productivity growth while the crops that faced minimal competitive pressure generally exhibited little growth in productivity. Thus, the hypothesis that competitive pressure is positively related to productivity growth is supported.
Tipo: Journal Article
Palavras-chave: Productivity Analysis.
Ano: 1990
URL: http://purl.umn.edu/30014

Operating Patterns of Fruit and Vegetable Processing Cooperatives
Provedor de dados: 31
Autores: Swanson,   Bruce L.
Growth of fruit- and vegetable-processing cooperatives slowed in the late seventies. High-growth cooperatives employed more full-time employees and more headquarters personnel than low-growth ones and organized their operations to minimize the impact of the peak season. The 14 cooperatives that were studied sold most of their products to chainstores, but the high-growth cooperatives sold a smaller proportion of their total product to chains and to Federal and State Government agencies than did the low-growth cooperatives.
Tipo: Report
Palavras-chave: Associations; Cooperatives; Financial characteristics; Fruits; Operating features; Organizational features; Processing; Vegetables; Agribusiness.
Ano: 1981
URL: http://purl.umn.edu/52043

Growth of Northwest Iberian juvenile hake estimated by combining sagittal and transversal otolith microstructure analyses
Provedor de dados: 5
Autores: Pineiro, C; Rey, J; De Pontual, Helene; Garcia, A.
Daily growth of Atlantic juvenile hake from Northwest Iberia has been estimated employing a new approach combining analyses of transversal and sagittal sections of the otoliths along the ventral radius. Age of juvenile hake ranging from 3 to 25 cm collected during a spring 2002 survey was estimated. Somatic growth followed a power fit: Fish size (TL) = 3.3254*age(0.7336) (r(2) =0.87, p &lt; 0.001, n = 76). yielding an average individual growth rate of 0.66 mm/day (0.06). The growth model indicates that after a year's life a juvenile can reach 25 cm. Otolith ventral radius ranged from 401 to 1842 mu m and daily increments were between 104 and 387. Fish growth and otolith growth were closely related (r(2) = 0.92 p &lt; 0.001, n = 76). These first results of...
Tipo: Text
Palavras-chave: NW Iberian waters; Seasonal variation; Daily growth; Otolith microstructure; Juvenile hake.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-6111.pdf

Assessing the impact of discretisation assumptions in a length-structured population growth model
Provedor de dados: 5
Autores: Drouineau, Hilaire; Mahevas, Stephanie; Bertignac, Michel; Fertin, A.
Most of the traditional assessment models are age-structured. However, many biological and exploitation processes are more length-dependent than age-dependent, and the required length-age conversion of available data is often not reliable. Consequently, length-structured or age-length structured models have undergone considerable development in recent years. The growth transition matrix used to model the mean growth and growth variability of the population, is of primary importance in a length-structured matrix model. Building this growth transition matrix is not trivial and it is necessary to assess the impact that various assumptions may have to identify robust model structures. In this study, we assess the effects of (1) time and length discretisation,...
Tipo: Text
Palavras-chave: Sensitivity analysis; Discrete model; Growth; Length structured model.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-4301.pdf

Sexual dimorphism in the catfish Genidens genidens (Siluriformes: Ariidae) based on otolith morphometry and relative growth
Provedor de dados: 83
Autores: Maciel,Thaís Rodrigues; Vaz-dos-Santos,André Martins; Barradas,José Ricardo de Souza; Vianna,Marcelo.
ABSTRACT Genidens genidens is a species susceptible to population declines in view of their reproductive biology peculiarities. Morphometric differences between sexes are observed in the literature, and these differences should also be evident in otolith development. Growth patterns are one of the most important biological characteristics regarding population dynamics and management. In this context, the aim of the present study is to describe this species relative growth and identify differences between sex life cycles. Somatic growth-otolith growth relationships and somatic length-weight relationships were estimated based on two methodologies; the Huxley and the polyphasic allometric models. Both models demonstrated different growth patterns between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biphasic growth; Energy allocation; Growth models; Lapillus otoliths; Morphometric relationships.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000100210

Digestibility in selected rainbow trout families and modelling of growth from the specific intake of   digestible protein
Provedor de dados: 21
Autores: Rasmussen, Richard; Jokumsen, Alfred.
The experiments aimed to clarify variations in digestibility of dietary nutrients in rainbow trout. Furthermore, the objective was to study how differences in digestibility might be related to growth and feed utilisation at various growth rates.  When comparing the results from the experiments it appeared that particularly protein digestibility was closely related to specific growth rate and feed conversion ratio at high growth rates. As a tool to visualise the relationship between protein digestibility and growth of rainbow trout a growth model was developed based on the specific intake of digestible protein, and general assumptions on protein content and protein retention efficiency in rainbow trout. The model indicated that increased protein...
Tipo: Journal paper
Palavras-chave: Technology assessment; Feeding and growth; Nutrient turnover; Research methodology and philosophy; Farm nutrient management.
Ano: 2008
URL: http://orgprints.org/18750/1/18750.pdf

Compensatory growth in slaughter pigs reared under organic conditions
Provedor de dados: 21
Autores: Fernández, José A.; Nørgaard, J.V.
BACKGROUND: Compensatory growth is the physiological process leading to accelerated growth following a period of growth retardation. This study assessed different feeding strategies thatmay induce compensatory growth. Pigs from two sire breeds, reared under organic conditions, were subjected to: (1) ad libitum feeding; (2) 0.7× ad libitum feeding; (3) 0.7× ad libitum feeding for 25 days followedby adlibitum feeding toslaughter; and(4) as (3) butfinished with an energy- andvitamin E-enriched diet.  RESULTS: Compared to the performance of ad libitum fed pigs, re-alimentation was not capable of fully compensating the effect of the imposed feed restriction either in the number of days used to reach the same slaughter weight (+4% to 7%) or in the slaughter...
Tipo: Journal paper
Palavras-chave: Feeding and growth.
Ano: 2009
URL: http://orgprints.org/32386/1/J%20Sci%20Food%20Agric%202009%2089%201376-1381%20Comp%20Growth.pdf

From ‘Additive’ to ‘Multiplicative’ Patterns of Growth.
Provedor de dados: 21
Autores: Schermer, Markus.
Growth processes are often problematic for small-scale farms as they may disturb their delicate balance of basic internal resources, like labor, buildings, machinery, land and animals. Most of these resources cannot be increased in linear processes and the smaller the unit the more problematic the task of realignment of resources becomes. Thus small-scale farmers often feel growth as enforced upon them by outside factors, e.g. a market partners. Growing enterprises in processing and trading need more supply and obviously are not eager to deal with more small suppliers, as this tends to mean higher transaction costs and varying qualities. However, there are examples where dedicated supply chain actors actively engage in preserving small scale structures and...
Tipo: Journal paper
Palavras-chave: Networks and ownership; Produce chain management.
Ano: 2016
URL: http://orgprints.org/30736/1/IRSA_Schermer_multiplicative%20growth.docx

Growth of champa fruit under agroecological conditions of Miraflores, Boyacá, Colombia
Provedor de dados: 86
Autores: Balaguera-López,Helber Enrique; Arévalo,Aníbal Herrera; Cortés-Moreno,Daniel.
The objective of this work was to analyze the growth of champa fruit (Campomanesia lineatifolia) as a function of growing-degree days (GDD) in the municipality of Miraflores, in Boyacá, Colombia. Thirty trees were selected at random, and 100 flowers in full bloom were marked in each tree. From the 26th day after flowering until harvest, 10 samples were taken every 15 days to determine the fruit parameters and growth rate. Temperature was recorded to calculate the GDD. From flowering until harvest, 1,489.1 GDD were accumulated over 145 days. Dry and fresh matter mass of pulp, seed, and total fruit were fitted to a logistic growth model, and three growth stages (S1, S2 and S3) were defined. In the S1, growth was slow, and the relative growth remained nearly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Myrtaceae; Growth rate; Tropical fruits.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012001200007

Analyzing Growth and Welfare Effects of Public Policies in Models of Endogenous Growth with Human Capital: Evidence from South Africa
Provedor de dados: 31
Autores: Badibanga,   Thaddee Mutumba.
Since the abolition of its Apartheid regime in 1994, South Africa has launched a massive program of education, which has been financed through resources representing on average 21% of the national budget or 7% of GDP. Today, the GDP share of public spending on education is 1.3 times the average of industrialized countries (5.4%) and almost twice that of developing countries (3.9%). In this paper, we simulate fiscal policy experiments to analyze the growth and welfare effects of a shift in the allocation of government expenditures between public spending on education and transfers as well as those of a change in the tax rate in a model of endogenous growth with human capital accumulation for the South African economy. The results of simulations demonstrate...
Tipo: Conference Paper or Presentation
Palavras-chave: Fiscal Policy; Government Expenditures and Education; Growth Model; International Development; Labor and Human Capital; E62; H52; O41.
Ano: 2008
URL: http://purl.umn.edu/6431

Exploring growth linkages and market opportunities for agriculture in Southern Africa
Provedor de dados: 31
Autores: Nin Pratt,   Alejandro; Diao,   Xinshen.
Considering the heterogeneity of the countries of southern Africa and the presence of South Africa and other middle-income countries in the region, southern Africa has a unique opportunity to exploit agricultural potential and regional trade opportunities through regional dynamics and integration. We analyze the implications of such opportunities for the growth of the low-income countries, using a regional general equilibrium model that captures growth linkages. We find that growth in the middle-income southern African countries, such as South Africa, benefits the region’s low-income countries through increased demand for their agricultural exports. Agricultural productivity growth, however, is necessary for low-income countries to take advantage of South...
Tipo: Report
Palavras-chave: Regional trade; General equilibrium model; Regional integration; Agricultural productivity; Agricultural growth; Grain production; International Development; International Relations/Trade; Marketing.
Ano: 2006
URL: http://purl.umn.edu/55411

High value products or staple crops? A discussion on development strategies for Southern Africa
Provedor de dados: 31
Autores: Nin Pratt,   Alejandro; Diao,   Xinshen.
Unexploited agricultural potential and regional trade opportunities together with the presence of South Africa and other middle-income countries, offer Southern Africa the unique opportunity to foster agricultural growth through regional linkages. In this study a global general equilibrium model that focuses on Southern Africa is used to analyze the implications that these specific characteristics of the regional economy have on growth choices of low-income countries. Three groups of growth scenarios are define to analyze the role of South Africa as a possible engine of growth, the role of own growth engines in low-income countries, and growth linkages between middle- and low-income countries. Results of the simulation scenarios show that larger benefits...
Tipo: Conference Paper or Presentation
Palavras-chave: Community/Rural/Urban Development.
Ano: 2006
URL: http://purl.umn.edu/21094

MULTIFUNCTIONAL AGRICULTURE: AN ENGINE OF REGIONAL ECONOMIC GROWTH?
Provedor de dados: 31
Autores: Randall,   Alan.
The historical role of agriculture in economic geography and recent conceptual developments – including multifunctional agriculture (MFA), the new economic geography, amenity-driven growth, and the “world is flat” and “creative class” hypotheses – are examined, and recent empirical research in North America and Europe is reviewed, in order to assess the potential for MFA as an engine of regional economic growth. Ideal MFA policy corrects market failures and is mostly amenity-augmenting. It has the capacity to enhance opportunities for farmers on urban fringe; stimulate growth in high-amenity rural regions accessible to cities that offer opportunities for high-value work; and generate growth in relatively remote high-amenity regions. The scope for...
Tipo: Journal Article
Palavras-chave: Multifunctional agriculture; Regional economic development; Agglomeration; Amenity driven growth; Peri-urban areas; Fiscal transfers; Agricultural and Food Policy; Food Security and Poverty.
Ano: 2010
URL: http://purl.umn.edu/91106

Agricultural Growth Linkages in Ethiopia: Estimates using Fixed and Flexible Price Models
Provedor de dados: 31
Autores: Diao,   Xinshen; Fekadu,   Belay; Haggblade,   Steven; Taffesse,   Alemayehu Seyoum; Wamisho,   Kassu; Yu,   Bingxin.
Accelerating growth and poverty reduction, and the ultimate achievement of structural transformation, are the critical policy challenges in present day Ethiopia. This paper examines relevant growth options in terms of their impact on overall growth and poverty reduction in the country. It deploys a fixed-price semi-input-output model and a flexible-price economy-wide multi-market model for that purpose. The paper finds that agricultural growth can induce higher overall growth and faster poverty reduction than non-agricultural growth, although the latter can also have large growth effects in some cases. Among sub-sectors within agriculture, staple crops have stronger growth linkages. Decomposition of these effects also reveals that consumption linkages are...
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 2007
URL: http://purl.umn.edu/42419

Growth Options and Poverty Reduction in Ethiopia: A Spatial Economywide Model Analysis for 2004-15
Provedor de dados: 31
Autores: Diao,   Xinshen; Nin Pratt,   Alejandro; Ghautam,   Madhur; Keough,   James; Chamberlin,   Jordan; You,   Liangzhi; Puetz,   Detlev; Resnick,   Danielle; Yu,   Bingxin.
Also published as EDRI-ESSP Policy Working Paper No. 2: Xinshen Diao; Alejandro Nin Pratt; Madhur Ghautam; James Keough; Jordan Chamberlin; Liangszi You; Detlev Puetz; Danielle Resnick; Bingxin Yu. 2005. Growth options and poverty reduction in Ethiopia: a spatial, economywide model analysis for 2004-15.
Tipo: Working or Discussion Paper
Palavras-chave: Poverty alleviation; Agricultural growth; Agricultural sector; Millennium Development Goals; Spatial analysis (Statistics); Disaggregation; Household surveys; Ethiopia; Africa; Food Security and Poverty; International Development.
Ano: 2005
URL: http://purl.umn.edu/58383

Agricultural Growth and Investment Options for Poverty Reduction in Rwanda
Provedor de dados: 31
Autores: Diao,   Xinshen; Fan,   Shenggen; Kanyarukiga,   Sam; Yu,   Bingxin.
An economywide, multimarket (EMM) model was developed for Rwanda to analyze the linkages and trade-offs between growth and poverty reduction goals at both macro- and micro-economic levels. The model includes 30 agricultural commodities or commodity groups from eight broad agricultural subsectors, along with two aggregated nonagricultural sectors. The analysis compares the economic, income, and poverty effects of a variety of growth scenarios based on existing national subsector growth targets. The analysis shows 6 percent of CAADP’s agricultural GDP growth target is achievable if growth reaches its target at the agricultural subsectoral level. But it is not enough for the country to achieve the MDG One, although the national poverty rate in 2015 will be 17...
Tipo: Working or Discussion Paper
Palavras-chave: Food Security and Poverty.
Ano: 2007
URL: http://purl.umn.edu/42427

Sources of Agricultural Growth in India: Role of Diversification towards High-Value Crops
Provedor de dados: 31
Autores: Joshi,   P.K.; Birthal,   Pratap Singh; Minot,   Nicholas.
This study examines the sources of crop income growth in Indian agriculture over the 1980s and 1990s. Using a method developed by Minot (2003), the analysis decomposes crop income growth into the contribution of yield increases, area expansion, price increases, and diversification from low-value crops to higher-value crops. The results confirm that at the national level, technology (higher yield) was the main source of crop income growth during 1980s, while rising prices and diversification emerged as the dominant sources of growth in agriculture during 1990s. Diversification towards higher-value crops such as fruits and vegetables accounted for about 27% of crop income growth in the 1980s and 31% in the 1990s. However, these national averages hide...
Tipo: Working or Discussion Paper
Palavras-chave: Crops; Income growth; Agriculture; Grain production; Agricultural research; Research and development; High value commodities; Crop yields; Prices; High-value crops; Decomposition; Crop Production/Industries.
Ano: 2006
URL: http://purl.umn.edu/58572

HealthyGrowth: How can organic supply chains grow without losing their added value? Results and recommendations
Provedor de dados: 21
Autores: Münchhausen, von, Susanne; Häring, Anna Maria; Knickel, Karlheinz.
The HealthyGrowth Project’s goal was the analysis of growth processes in the organic food sector. It examined how to safeguard the integrity and transparency of the value chain despite the increasing ‘distance’ between the producer and the consumer. It examined businesses and food initiatives that succeed in balancing growth, maintaining value added products and convincing the consumer that a higher price is justified. The recommendations for entrepreneurs and policy makers aim to emphasise the potential to promote values-based growth processes in the organic sector in a more comprehensive way.
Tipo: Report
Palavras-chave: Farm economics Markets and trade Education; Extension and communication Produce chain management.
Ano: 2016
URL: http://orgprints.org/30759/7/HealthyGrowth-Recommendations-en-11-2016.pdf

Volume Growth in Quality Food Firms – Lessons and Reflections from Norway
Provedor de dados: 21
Autores: Kvam, Gunn-Turid; Bjørkhaug, Hilde.
A review of research on growth processes in quality food chains in Norway shows that only a few studies have focused on growth in such chains. Studies look at food businesses as the focal unit and discover many challenges for local firms with growth ambitions. The main issues seem to concern distribution and follow-up sales, where communicating qualities of products to customers is a key challenge. Other challenges observed were developing and maintaining qualities of products to gain premium priced products, the financing of growth, developing the business organisation and establishing cooperation and networks for growth.
Tipo: Conference paper, poster, etc.
Palavras-chave: "Organics" in general Farm economics Social aspects Markets and trade Values; Standards and certification Policy environments and social economy Norway History of organics Country reports.
Ano: 2013
URL: http://orgprints.org/24925/3/24925.pdf

Factors Influencing Growth of Dairy Product Manufacturing in the United States
Provedor de dados: 31
Autores: Asiseh,   Fafanyo; Devadoss,   Stephen; Bolotova,   Yuliya; Foltz,   John C.; Haggerty,   Robert J.
www.ifama.org
Tipo: Journal Article
Palavras-chave: Dairy product manufacturing; Growth; United States; Farm Management; Livestock Production/Industries; Production Economics.
Ano: 2010
URL: http://purl.umn.edu/93347

The Role of Microenterprises in Economic Growth: A Panel Study of Wisconsin Counties 1977 to 1997
Provedor de dados: 31
Autores: Deller,   Steven C.
In this study I examine the role of microenterprises (firms with between one and four employees) in Wisconsin economic growth. Using a panel of Wisconsin counties from 1977 to 1997 I estimate an expanded Carlino-Mills type model of growth. Results suggest that nearly 50 percent of all businesses in Wisconsin are microenterprises and this share is relatively stable over time. Results also indicate that a higher percentage of businesses classified as microenterprises tend to be associated with counties with lower population levels, slower population growth, but higher levels of employment and income growth. Results also vary by type of industry. These results suggest that care must be taken when promoting microenterprises as a major engine of economic...
Tipo: Working or Discussion Paper
Palavras-chave: Community/Rural/Urban Development; Public Economics.
Ano: 2007
URL: http://purl.umn.edu/92140

CO2 emissions, energy consumption and economic growth in Tunisia
Provedor de dados: 31
Autores: Chebbi,   Houssem Eddine; Boujelbene,   Y.
The aim of this country specific study is to understand long and short-run linkages between economic growth, energy consumption and CO2 emission using Tunisian data over the period 1971-2004. Statistical findings indicate that economic growth, energy consumption and CO2 emission are related in the long-run and provide some evidence of inefficient use of energy in Tunisia, since environmental pressure tends to rise faster than economic growth. In the short run, results support the argument that economic growth exerts a positive “causal” influence on energy consumption growth. In addition, results from impulse response do not confirm the hypothesis that an increase in pollution level induces economic expansion. Although Tunisia has no commitment to reduce...
Tipo: Conference Paper or Presentation
Palavras-chave: CO2 emissions; Energy Consumption; Economic Growth; Tunisia; Resource /Energy Economics and Policy.
Ano: 2008
URL: http://purl.umn.edu/44016

INTERNATIONAL TRADE AND GROWTH: AN OVERVIEW FROM THE PERSPECTIVE OF THE NEW GROWTH THEORY
Provedor de dados: 31
Autores: Roe,   Terry L.; Mohtadi,   Hamid.
The role of international trade in the new growth theory is investigated from several perspectives. Following a historical outline and a brief analytical sketch of the R&amp;D based models, the results from fitting three structural models to data are presented. Results show the relative impacts on growth from trade and R&amp;D based policies including technological spillovers from trade. The mechanism of inter-sectoral adjustments to the long-run growth path are also discussed.  Results from selected econometric studies are reviewed. With emphasis on agriculture, this includes evidence of technological spillovers from trade, the effect of R&amp;D expenditures on growth in total factor productivity, and the extent to which the stock of technological...
Tipo: Conference Paper or Presentation
Palavras-chave: Endogenous Growth; Trade; Technological Spillovers; International Relations/Trade.
Ano: 1999
URL: http://purl.umn.edu/21536

RURAL GROWTH IN U.S. HEARTLAND
Provedor de dados: 31
Autores: Miranowski,   John A.; Monchuk,   Daniel C.; Wohlgemuth,   Darin.
This study identifies factors that explain growth in rural areas using data from 618 counties in the U.S. rural heartland.  We evaluate many of the growth hypotheses in the context of sectoral employment growth for counties in Iowa, Minnesota, Missouri, Kansas, Nebraska, South Dakota and North Dakota.  Separate estimates for rural and urban counties provide insight into factors that are important in explaining employment growth.  The results support the importance of human capital as a factor contributing to sectoral employment growth and show that increased concentration and specialization of employment  within a county lead to slower growth in the rural heartland counties.
Tipo: Conference Paper or Presentation
Palavras-chave: Community/Rural/Urban Development.
Ano: 2001
URL: http://purl.umn.edu/20655

Computation of Compound Growth Rates in Agriculture: Revisited
Provedor de dados: 31
Autores: Prajneshu; Chandran,   K.P.
Growth rates are widely employed in the field of agriculture as these have important policy implications. The usual parametric approach for growth rate analysis is to assume multiplicative error in the underlying nonlinear geometric model and then fit the linearized model by ‘method of least squares’. The deficiencies of this approach have been highlighted. It has been argued that nonlinear estimation procedures should be employed for fitting the model and then only the growth rates should be computed. A methodology has been discussed to compute the compound growth rate by using growth models, viz. monomolecular, logistic and Gompertz. Further, as an illustration, the total foodgrain production of our country during the period 1980 to 2001 has been...
Tipo: Journal Article
Palavras-chave: Agricultural and Food Policy.
Ano: 2005
URL: http://purl.umn.edu/58480

Determinants of Economic Growth in Organic Farming: The Case of Bavaria and Baden-Wuerttemberg
Provedor de dados: 31
Autores: Brenes Muñoz,   Thelma; Lakner,   Sebastian; Brümmer,   Bernhard.
The organic sector in Germany has experienced a substantial growth since the beginning of the 1990s until today. During this process of expansion, most organic farms have grown in terms of factor endowment, while others have disappeared or reconverted to conventional agriculture. This paper investigates the potential determinants of farms growth in the organic sector. This paper models potential factors that might have an impact on the economic growth of 332 organic farms in Bavaria and Baden-Wuerttemberg. The econometric model was developed based on ‘Gibrat’s Law’, using a fixed effect method (FE). The results suggest that direct marketing and livestock intensity significantly influence farm growth. In addition, less efficient farms grew faster than more...
Tipo: Conference Paper or Presentation
Palavras-chave: Farm-growth; Gibrat’s law; Technical efficiency; Direct marketing; Farm Management.
Ano: 2011
URL: http://purl.umn.edu/114270

Does Composition of Government Spending Matter to Economic Growth?
Provedor de dados: 31
Autores: Yu,   Bingxin; Fan,   Shenggen; Saurkar,   Anuja.
This paper assesses the impact of the composition of government spending on economic growth in developing countries. We use a dynamic GMM model and a panel data set for 44 developing countries between 1980 and 2004. We find that the various types of government spending have different impact on economic growth. In Africa, human capital spending contributes to economic growth whereas in Asia, capital formation, agriculture and education has strong growth promoting effect. In Latin America, none of government spending items has significant impact on economic growth. Our results are robust regardless of model specifications and instruments chosen.
Tipo: Conference Paper or Presentation
Palavras-chave: Government expenditure; Growth; GMM; Agricultural and Food Policy; Financial Economics; International Development; H5; O1; C232.
Ano: 2009
URL: http://purl.umn.edu/51684

Democracy and Economic Growth in China: Evidence from Cointegration and Causality Testing
Provedor de dados: 31
Autores: Narayan,   Paresh Kumar; Smyth,   Russell.
This article considers the relationship between democracy and economic growth in China using the Error-Correction Mechanism test for cointegration, Autoregressive Distributed Lag modelling, Granger causality and dynamic modelling via variance decomposition and impulse response analysis. Our main findings are that in the long run the lack of democracy in China has had a statistically significant negative effect on real income, while in the short run democracy has had a statistically insignificant effect on economic growth. Our results suggest that in the long run growth in capital, labour and democracy Granger cause economic growth, while in the short run there is bi-directional Granger causality between democracy and economic growth.
Tipo: Journal Article
Palavras-chave: China; Democracy; Economic growth; International Development; C22; E23.
Ano: 2006
URL: http://purl.umn.edu/50282

CAN ECONOMIC GROWTH BE SUSTAINED? A POST-MALTHUSIAN PERSPECTIVE
Provedor de dados: 31
Autores: Ruttan,   Vernon W.
During the late 1990's, a spurt of growth in output and productivity led the business press, and some economists, to proclaim that the economy had entered a new era in which the old rules that governed cyclical and secular growth in the past no longer obtained. In the paper I present the results of a two sector economic growth model that demonstrates that as the share of the goods producing sectors (agriculture and manufacturing) continue to decline the service sector will have to bear almost the entire burden of sustaining productivity growth in the U.S. economy. A clear implication is that the rate of productivity growth, and the rate of output, will regress toward the rate of growth in its least productive sectors.
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 2002
URL: http://purl.umn.edu/14276

Economic Growth under Globalization: Evidence from Panel Data Analysis
Provedor de dados: 31
Autores: Zhuang,   Renan; Koo,   Won W.
It has been controversial among economists about the impacts of globalization on growth, and the debate over the issue has intensified in recent years. In this study, we employ reliable panel data and an empirical growth model derived from production theory to investigate the effects of globalization on economic growth. The estimation results strongly suggest that economic globalization has a significant positive effect on economic growth for all countries. However, China and India would gain the most, followed by developed countries, and other developing countries would gain the least. Other important determinants of economic growth include capital, human capital, and technology.
Tipo: Conference Paper or Presentation
Palavras-chave: Globalization; Economic growth; Measure of Economic Globalization; International Development; F15; F43.
Ano: 2007
URL: http://purl.umn.edu/9750

Human Development and Economic Growth
Provedor de dados: 31
Autores: Ranis,   Gustav.
Recent literature has contrasted Human Development, described as the ultimate goal of the development process, with economic growth, described as an imperfect proxy for more general welfare, or as a means toward enhanced human development. This debate has broadened the definitions and goals of development but still needs to define the important interrelations between human development (HD) and economic growth (EG). To the extent that greater freedom and capabilities improve economic performance, human development will have an important effect on growth. Similarly, to the extent that increased incomes will increase the range of choices and capabilities enjoyed by households and governments, economic growth will enhance human development. This paper analyzes...
Tipo: Working or Discussion Paper
Palavras-chave: Economic growth; Human development; International Development; Labor and Human Capital; O15; O11.
Ano: 2004
URL: http://purl.umn.edu/28375

Rural Investments to Accelerate Growth and Poverty Reduction in Kenya
Provedor de dados: 31
Autores: Thurlow,   James; Kiringai,   Jane; Gautam,   Madhur.
Kenya’s economy is relatively diverse, with both agricultural and industrial potential. However, the economy has performed poorly over the last decade, and poverty and inequality have risen. This paper examines the impact of alternative growth paths and rural investments on poverty using an economy-wide model. It finds that if Kenya continues along its current growth path, its economy will have to grow by more than 10 percent per year over the coming decade to meet the Millennium Development Goal (MDG) of halving poverty by 2015. Therefore, Kenya must search for alternative sources of poverty-reducing growth. The results of the model indicate that poverty is unlikely to decline significantly without an acceleration of agricultural growth. Growth in...
Tipo: Working or Discussion Paper
Palavras-chave: Agriculture; Rural investment; Poverty; Inequality; Kenya; Africa; Community/Rural/Urban Development; Food Security and Poverty.
Ano: 2007
URL: http://purl.umn.edu/42376

Do Japanese Foreign Direct Investment and Trade Stimulate Agricultural Growth in East Asia? Panel Cointegration Analysis
Provedor de dados: 31
Autores: Sattapon,   Weerapong.
The agricultural sector is an important sector that most people in East Asia rely on and growth in this sector may help to lift their standard of living. This study assessed what factors contributed to agricultural growth by applying the panel econometric approach. First, the long-run relationship between the agriculture growth and its explanatory variable was investigated by applying the IPS unit root test and Pedroni panel cointegration test. The results indicated that all variables showed an integration of order unity, and showed strong evidence to support the existence of long-run relationship. The results from Fixed Effect (FE) regression indicated that imports, exports and trade liberalization were the important factors that contributed to growth in...
Tipo: Conference Paper or Presentation
Palavras-chave: Agricultural growth; East Asia; Foreign Direct Investment; Trade; Panel Data; International Relations/Trade; O4; Q17; R0.
Ano: 2006
URL: http://purl.umn.edu/25570

Changes in growth variables and potassium content in leaves of Black Barley in response to NaCl
Provedor de dados: 61
Autores: Abu-Al-Basal,Mariam A.; Yasseen,Bassam T.
Much attention is being focused on the Black barley (Hordeum distichum L.) as a local cultivar offering good model for a cereal crop has traits of resistance to drought and salinity during vegetative growth stages. Although Black was sensitive to salt stress during germination, it developed gradual tolerance with age and proved very tolerant during growth and development stages. The data of study clearly revealed how this cultivar was superior over Arivat (Hordeum vulgare L.) in many physiological aspects such as leaf growth variables (i.e. rate and duration) and processes (i.e. cell division), tiller production and potassium content. Black barley had more tillers, faster rate and longer duration of growth processes which was accompanied with potassium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Black barley; Hordeum distichum L.; Cell division; Growth rate; Growth duration; Leaf growth; Arivat; Hordeum vulgare L.; Potassium; Salt stress.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202009000400002

EXPORTS AND ECONOMIC GROWTH UNDER STRUCTURAL CHANGE: A CO-INTEGRATION ANALYSIS OF EVIDENCE FROM MALAYSIA
Provedor de dados: 31
Autores: Khalafalla,   Khalid Yousif; Webb,   Alan J.
A number of studies have tried to establish a causal link between export expansion and economic growth. Empirical studies of the relationship have pursued two different approaches-one set has used inter-country statistical comparisons and the second set has focused on the economic performance of individual countries. Our contribution to the work is to recognize that structural changes will, over time, change the sources of growth and this will affect the export-growth relationship. We use country case study approach focusing on Malaysia, a country with one of the world's highest sustained growth rates over the past 3 decades.  Malaysia has also had a long history of commodity trade but has been successful, in the last 2 decades in diversifying and shifting...
Tipo: Working or Discussion Paper
Palavras-chave: International Development; International Relations/Trade.
Ano: 2000
URL: http://purl.umn.edu/14595

Growth of the black-lip pearl oyster, Pinctada margaritifera, in suspended culture under hydrobiological conditions of Takapoto lagoon (French Polynesia)
Provedor de dados: 5
Autores: Pouvreau, Stephane; Tiapari, Jerome; Gangnery, Aline; Lagarde, Franck; Garnier, Matthieu; Teissier, Hinano; Haumani, G; Buestel, Dominique; Bodoy, Alain.
Growth of the black-lip pearl oyster, Pinctada margaritifera var. cumingi, was studied for an annual cycle, from March 1997 to April 1998, in the lagoon of Takapoto atoll (Tuamotu archipelago, French Polynesia). Growth in shell and in tissue were measured every 15 days on three successive age groups of cultivated pearl oysters. At the same time, hydrobiological parameters (temperature, salinity, oxygen concentration, suspended particulate matter), known to have influence on bivalve growth, were followed each week during culture. No seasonal trend was observed in hydrobiological parameters, except for temperature which varied between 26 degrees C and 31 degrees C. The potential food for pearl oysters (particulate organic matter, POM, mg l(-1)) was slightly...
Tipo: Text
Palavras-chave: Pearl culture; Matter in suspension; Biochemical composition; Length weight relations ship; Tropical lagoon; Growth; Pinctada margaritifera.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/2000/publication-381.pdf

Relationship Between Trade Liberalisation, Economic Growth and Trade Balance: An Econometric Investigation
Provedor de dados: 31
Autores: Parikh,   Ashok; Stirbu,   Corneliu.
This is a study of 42 developing countries of Asia, Africa and Latin America in which we first examine the impact of trade liberalisation on economic growth, investment share of GDP, openness, trade balance and current accounts (as percentages of GDP). Both panel data and country by country data are used to measure the impact of liberalisation on domestic economic growth measured in PPP terms from the data available in Heston, Summers and Aten (2001) study. Domestic economic growth is often positively related to liberalisation for many countries of our sample. Next we analyse the impact of growth on trade balance and current account to examine whether higher economic growth due to liberalisation leads to adverse effect on balance of trade. Trade balance is...
Tipo: Working or Discussion Paper
Palavras-chave: Liberalisation; Trade balance; Developing countries; Panel data estimation; International Development; International Relations/Trade; F32; F14; O24; C21; C23.
Ano: 2004
URL: http://purl.umn.edu/26267

Individual growth variation and its relationship with survival in juvenile Pacific oysters, Crassostrea gigas (Thunberg)
Provedor de dados: 5
Autores: Boudry, Pierre; Collet, B; Mccombie, Helen; Ernande, Bruno; Morand, B; Heurtebise, Serge; Gerard, Andre.
In order to study individual growth variability and its relationship with survival in juvenile Crassostrea gigas, parental oysters were sampled at four sites located along the French Atlantic coast and bred under controlled hatchery conditions. Four groups of larvae were obtained by crossing five males and five females from each of the four sites, and a fifth group by crossing these 20 males and 20 females together in a pool. Larvae were reared under conditions allowing the maintenance of a maximum variability of size and gave five experimental groups. Oysters were individually monitored for growth and survival from 3 to 10 months after fertilization. The individual growth performances were relatively stable over time and no noticeable compensation for...
Tipo: Text
Palavras-chave: Survival; Oysters; Growth; Crassostrea gigas; Aquaculture.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/publication-467.pdf

Molecular and cellular mechanisms for the regulation of ovarian follicular function in cows
Provedor de dados: 19
Autores: SHIMIZU, Takashi; 清水, 隆.
Ovary is an important organ that houses the oocytes (reproductive cell). Oocyte growth depends on the function of follicular cells such as the granulosa and theca cells. Two-cell two gonadotropin systems are associated with oocyte growth and follicular cell functions. In addition to these systems, it is also known that several growth factors regulate oocyte growth and follicular cell functions. Vascular endothelial growth factor (VEGF) is involved in thecal vasculature during follicular development and the suppression of granulosa cell apoptosis. Metabolic factors such as insulin, growth hormone (GH) and insulin-like growth factor 1 (IGF-1) also play critical roles in the process of follicular development and growth. These factors are associated not only...
Palavras-chave: Endotoxin; Metabolic factors; Ovarian follicle; Steroid hormone; Vascular endothelial growth factor (VEGF).
Ano: 2016
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4325

A preliminary investigation of age and growth of Otolithes ruber from KwaZulu-Natal, South Africa
Provedor de dados: 20
Autores: Fennessy, S.T.; Brash, J.M.
This study investigated age and growth of Otolithes ruber, found in KwaZulu-Natal, South Africa. The specimens were collected from prawn trawlers that operate off the shallow water Tugela Bank and from a recreational boat fishery in Durban. Estimates of age and growth parameters were based on the examination of sectioned sagittal otoliths. There was difficulty in estimating growth parameters for separate sexes because the small fish were not sexed and the numbers of males was low. Periodicity of growth zone formation was assumed to be annual although periodicity of growth zone deposition could not be established by marginal zone analysis. The von Bertalanffy growth curve was used to describe the combined male and female growth of O. ruber: Lt = 419mm TL...
Tipo: Journal Contribution
Palavras-chave: SCIAENIDAE; Age; Growth; Type specimens; Growth; Age; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_186.
Ano: 2005
URL: http://hdl.handle.net/1834/1130

Vegetative growth of grasslands based on hyper-temporal NDVI data from the Modis sensor
Provedor de dados: 86
Autores: Hott,Marcos Cicarini; Carvalho,Luis Marcelo Tavares de; Antunes,Mauro Antonio Homem; Santos,Polyanne Aguiar dos; Arantes,Tássia Borges; Resende,João Cesar de; Rocha,Wadson Sebastião Duarte da.
Abstract: The objective of this work was to analyze the development of grasslands in Zona da Mata, in the state of Minas Gerais, Brazil, between 2000 and 2013, using a parameter based on the growth index of the normalized difference vegetation index (NDVI) from the moderate resolution imaging spectroradiometer (Modis) data series. Based on temporal NDVI profiles, which were used as indicators of edaphoclimatic conditions, the growth index (GI) was estimated for 16-day periods throughout the spring season of 2012 to early 2013, being compared with the average GI from 2000 to 2011, used as the reference period. Currently, the grassland areas in Zona da Mata occupy approximately 1.2 million hectares. According to the used methods, 177,322 ha (14.61%) of these...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth index; Pastures; Remote sensing; Time series; Zona da Mata.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000700858

GROWTH AND POVERTY IN RURAL CHINA: THE ROLE OF PUBLIC INVESTMENTS
Provedor de dados: 31
Autores: Fan,   Shenggen; Zhang,   Linxiu; Zhang,   Xiaobo.
Public investment, together with institutional and policy reforms, has contributed substantially to rapid economic growth in rural China since the late 1970s. This rapid growth has also led to dramatic reductions in rural poverty. In this study we use a simultaneous equations model and time-series (1978-97), cross-sectional (25 provinces) data to analyze the differential impact of different types of public investments on growth and poverty reduction in rural China. The results show that government expenditures on education have by far the largest impact on poverty reduction, and the second largest impact on production growth; it is a dominant “win-win” strategy. Government spending on agricultural research and extension has the largest impact on...
Tipo: Working or Discussion Paper
Palavras-chave: Public Economics.
Ano: 2000
URL: http://purl.umn.edu/16115

Farm-Level Evidence on the Sustainable Growth Paradigm from Grain and Livestock Farms
Provedor de dados: 31
Autores: Escalante,   Cesar L.; Turvey,   Calum G.; Barry,   Peter J.
This study uses the sustainable growth rate model to investigate, measure, and analyze sustainable growth rates and trends for Illinois farmers. Results of farm-level econometric analyses indicate the relevance of the sustainable growth paradigm in explaining most farm financial decisions made each year. Grain farms have shown a greater tendency to balance growth through adjustments in production efficiencies while livestock farms rely more on financial leveraging strategies. In general, our results have shown that the farm sector has adapted to positive or negative sustainable growth challenges consistent with the Higgins' model and that, from an equilibrium point of view, countercyclical measures of the sustainable growth challenge indicate that there...
Tipo: Conference Paper or Presentation
Palavras-chave: Agricultural finance; Asset turnover; Balanced growth; Capital structure; Panel corrected standard errors; Random-effects model; Sustainable growth challenge; Farm Management; Q14; Q13; D9; Q10; Q11.
Ano: 2006
URL: http://purl.umn.edu/25329

Global Growth, Macroeconomic Change, and U.S. Agricultural Trade
Provedor de dados: 31
Autores: Gehlhar,   Mark J.; Dohlman,   Erik; Brooks,   Nora L.; Jerardo,   Alberto; Vollrath,   Thomas L.
After a decade of uneven export growth and rapidly growing imports, U.S. agriculture has begun to reassert its position in global trade markets. Rising exports and signs of moderating demand for imports mark a departure from previous trends. This report places past trends and emerging developments in perspective by spotlighting the role of two specific factors that help steer U.S. agricultural trade patterns: global growth and shifts in foreign economic activity that affect U.S. exports, and macroeconomic factors underlying the growth of U.S. imports. Consistent with actual changes in the level and destination of U.S. exports, model simulations corroborate the contention that renewed export growth can be sustained by expanding incomes and growing food...
Tipo: Report
Palavras-chave: Agricultural trade; Trade balance; Income growth; Economic development; Population; Macroeconomics; Exchange rates; Current account; Growth projections.; Agricultural and Food Policy; Agricultural Finance; International Development; International Relations/Trade.
Ano: 2007
URL: http://purl.umn.edu/55963

Agricultural Growth and Poverty Reduction: The Case of Mexico
Provedor de dados: 31
Autores: Soloaga,   Isidro.
Poverty levels have been diminishing in Mexico since the late 90's, although several regions still show high levels of poverty, and they are extremely high in some rural areas. This paper have addressed the issue of the linkages between sectoral growth (urban/rural) and poverty levels. It was found that although both types of growth impacted negatively on poverty levels in Mexico, rural growth seems to have a higher power in improving consumption per capita of the poorest among the poor people. Moreover, the only inter-sector linkage found was the one that connects rural growth with urban poverty for those people above the food -poverty line but below the moderate poverty line. Exploring plausible channels, we have found that rural growth enhances equality...
Tipo: Conference Paper or Presentation
Palavras-chave: Food Security and Poverty; International Development; O18; O5; E2; J43.
Ano: 2006
URL: http://purl.umn.edu/25277

Agricultural Growth, Poverty, and Nutrition in Tanzania
Provedor de dados: 31
Autores: Pauw,   Kalie; Thurlow,   James.
Rapid economic growth has failed to significantly improve poverty and nutrition outcomes in Tanzania. This raises concerns over a decoupling of growth, poverty, and nutrition. We link recent production trends to household incomes and caloric availability using a dynamic computable general equilibrium and micro-level poverty and nutrition modules. Results indicate that the structure of economic growth—not the level—is currently constraining the rate of poverty reduction in Tanzania. Agricultural growth has been driven by larger-scale farmers that are less likely to be poor. Growth has further been concentrated in crops grown in only a few regions of the country. Slow expansion of food crops and livestock also explains the weak relationship between...
Tipo: Journal Article
Palavras-chave: Economic growth; Poverty; Nutrition; Computable general equilibrium modeling; Tanzania; Food Security and Poverty.
Ano: 2010
URL: http://purl.umn.edu/95974

Meat Packing and Processing Facilities in the Non-Metropolitan Midwest: Blessing or Curse?
Provedor de dados: 31
Autores: Artz,   Georgeanne M.; Orazem,   Peter F.; Otto,   Daniel M.
Growth in the meat packing and processing industry in the Midwestern United States has generated a significant amount of debate regarding the costs and benefits of this type of economic development.  This research employs 1990-2000 proprietary data from the Bureau of Labor Statistics'’ Longitudinal Database (LDB) to investigate the effects of this industry on social and economic outcomes in non-metropolitan counties of twelve Midwestern states.  The empirical specification uses a difference-in-differences specification to measure the effect of industry growth on local economic growth, government expenditures, and crime.  Propensity score matching is used as a check on possible non-random placement of meat packing and processing plants.  Results suggest...
Tipo: Conference Paper or Presentation
Palavras-chave: Community/Rural/Urban Development.
Ano: 2005
URL: http://purl.umn.edu/19242

GROWTH MANAGEMENT TOOLS AND PROGRAMS TARGETING SPECIFIC OUTCOMES WITH NON-MARGINAL INSTITUTIONAL CHANGE
Provedor de dados: 31
Autores: Norris,   Patricia E.
Communities across the country are struggling to accommodate population growth and economic development while limiting negative impacts of associated land development patterns.. At federal, state and local levels, policies and programs are being implemented in an attempt to mitigate the negative impacts of growth. Many of these programs are united under the concept of Smart Growth. There are numerous resources available that explain and describe applications of tens, if not hundreds, of smart growth tools (for example: see ICMA, 2003). The purpose of this paper is to highlight a few growth management programs that have incorporated tools characterized by fairly significant institutional changes. Of particular interest are the economic incentives and...
Tipo: Working or Discussion Paper
Palavras-chave: Institutional and Behavioral Economics.
Ano: 2003
URL: http://purl.umn.edu/11705

Technology Capital: The Price of Admission to the Growth Club
Provedor de dados: 31
Autores: Evenson,   Robert E.; Fuglie,   Keith O.
We assess long-run patterns of global agricultural productivity growth in developing countries between 1970 and 2005 and examine the relationship between investments in technology capital and productivity.  To measure agricultural total factor productivity (TFP) we employ a Solow-type growth accounting method to decompose output growth into input and TFP growth.  For technology capital we construct two indexes reflecting national capacities in agricultural research and education-extension for 87 developing countries. We then correlate technology capital levels with long-term growth rates in agricultural TFP. Our findings show that average agricultural TFP growth in developing countries accelerated in the 1980s and 1990s but fell marginally in the early...
Tipo: Conference Paper or Presentation
Palavras-chave: Agricultural development; Agricultural extension; Agricultural research; Land quality; Agricultural cost shares; Growth accounting; Total factor productivity (TFP); International Development; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies; Q10; Q16; O13; O30; O47; O57.
Ano: 2009
URL: http://purl.umn.edu/51398

Pollution, Health and Life Expectancy: How Environmental Policy Can Promote Growth
Provedor de dados: 31
Autores: Pautrel,   Xavier.
This article investigates the influence of environmental policy on growth assuming that the channel of transmission relies on the link between pollution, health and the survival probability, in an overlapping generations model à la Blanchard (1985) where growth is driven by a mechanism à la Romer (1986). We demonstrate that environmental policy has an ambiguous effect on growth in the steady-state when the detrimental impact of pollution on health and lifetime is taken into account: for low levels of taxation, environmental policy promotes growth while it is harmful to growth for high levels. Furthermore, we show that the environmental policy is more likely to promote growth (i.e. it stimulates growth for a wider range of environmental taxes) when public...
Tipo: Working or Discussion Paper
Palavras-chave: Growth; Environment; Overlapping generations; Environmental Economics and Policy.
Ano: 2007
URL: http://purl.umn.edu/7434

Growth models fitted to Dipturus chilensis length-at-age-data support a two phase growth
Provedor de dados: 97
Autores: AVERSA,MARINA I; DANS,SILVANA L; GARCÍA,NÉSTOR A; CRESPO,ENRIQUE A.
Age and growth for the beaked skate was estimated from bands in the vertebral centra of 689 individuals obtained from incidental catches of the Argentine hake (Merluccius hubbsi) fishery. Age bias plots and indices of precision indicated that ageing method was precise and unbiased (% CV = 3 % PA = 82.09 %). Edge and marginal increment analysis of the vertebrae support the hypothesis of annual band pair deposition. Three growth models were fitted to length-at-age and the two-phase growth model produced the best fit. This feature has never been described before for D. chilensis and can be related to changes in energy allocation and the shift from juvenile to adult phase. The unrealistic biological estimates of the von Bertalanffy growth model illustrates the...
Tipo: Journal article
Palavras-chave: Beaked skate; Dipturus chilensis; Growth; Two-phase growth.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2011000100003

A sinusoidal equation as an alternative to classical growth functions to describe growth profiles in turkeys
Provedor de dados: 2
Autores: Kuhi, Hassan Darmani; Lopez, Secundino; France, James; Mohit, Ardeshir; Shabanpour, Arezu; Hosssein-Zadeh, Navid Ghavi; Falahi, Saeed.
Because of the relatively long growing cycle and the high cost of research into turkey production and nutrition, the potential benefits from modelling growth in this avian species are considerable. Though there are many studies aimed at evaluating animal growth models, the number of studies targeting growth models in turkeys is quite limited. In this paper we present a sinusoidal function to describe the evolution of growth in turkeys as a function of time based on data published by Aviagen. The new function was evaluated with regard to its ability to describe the relationship between body weight and age in turkeys and was compared to four standard growth functions: the Gompertz, logistic, Lopez, and Richards. The results of this study show that the new...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth functions; Sinusoidal equation; Turkeys.
Ano: 2019
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/45990

Diametric Growth of Tree Species in the Atlantic Forest, Paraná, Brazil
Provedor de dados: 42
Autores: SOUZA,RONAN F.; MACHADO,SEBASTIÃO A.; LONGHI-SANTOS,TOMAZ.
Abstract: Management of remnants in Atlantic Forest is an alternative for their conservation, however, information on the growth and ecology of those species is lacking. This study aimed to describe diametric growth of Balfourodendron riedelianum, Cordia trichotoma and Ocotea diospyrifolia based on its growth rings and to verify the relationship between this growth with the environmental characteristics in different altitude levels and forest types. Diametric growth was higher for the largest tree diameters of the three species. Based on the fitted growth model, the age in which mean annual increment in diameter becomes greater than the current annual increment was 55 years for B. riedelianum (DBH = 18.27 cm), 45 years for C. trichotoma (DBH = 26.56 cm)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dendrochronology; Altitude levels; Forest types; Forest management; Forest ecology; Iguaçu National Park.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000700855

Ligament, hinge, and shell cross-sections of the Atlantic surfclam (Spisula solidissima): Promising marine environmental archives in NE North America
Provedor de dados: 5
Autores: Poitevin, Pierre; Thebault, Julien; Schoene, Bernd R.; Jolivet, Aurelie; Lazure, Pascal; Chauvaud, Laurent.
The Atlantic surfclam (Spisula solidissima) is a commercially important species in North American waters, undergoing biological and ecological shifts. These are attributed, in part, to environmental modifications in its habitat and driven by climate change. Investigation of shell growth patterns, trace elements, and isotopic compositions require an examination of growth lines and increments preserved in biogenic carbonates. However, growth pattern analysis of S. solidissima is challenging due to multiple disturbance lines caused by environmental stress, erosion in umbonal shell regions, and constraints related to sample size and preparation techniques. The present study proposes an alternative method for describing chronology. First, we analyzed growth...
Tipo: Text
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00444/55597/57229.pdf

Modeling Pinus edulis growth in a changing climate: Carbon dioxide, growing season length, and precipitation
Provedor de dados: 17
Autores: Susannah Tysor; George  Koch; Amy Whipple.
Background/Question/Methods&amp;#xd;&amp;#xa;Pinus edulis (pinyon pine) is a foundation tree species in the southwestern United States that has experienced high levels of mortality in a drought extending from the mid-1990s to the present.  Despite high mortality levels, radial growth of pinyon pine in northern Arizona over the past century shows an increasing trend not found in four centuries of preindustrial growth.  Atmospheric carbon dioxide concentration ([CO2]) shows a strong correlation with recent radial growth, and a simple linear AR(1) model with only [CO2] as a covariate explains average yearly growth well.  No climate variable except [CO2] has a consistent long-term trend that accounts for increasing radial growth, but growing season and...
Tipo: Poster
Palavras-chave: Ecology; Earth &amp; Environment.
Ano: 2010
URL: http://precedings.nature.com/documents/5193/version/1

Growth index in massai grass under different levels of nitrogen fertilization
Provedor de dados: 96
Autores: Lopes,Marcos Neves; Pompeu,Roberto Cláudio Fernandes Franco; Cândido,Magno José Duarte; Lacerda,Claudivan Feitosa de; Silva,Rodrigo Gregório da; Fernandes,Francisco Ronaldo Belem.
This study aimed to evaluate the growth index of massai grass during two regrowth cycles in a greenhouse under five levels of nitrogen (0, 150, 300, 450 and 600 mg N/dm³ of soil) and eight growth ages (5, 8, 11, 14, 17, 20, 23 and 26 days) in a split-plot design with five replications. The following variables were evaluated: net assimilation rate, herbage growth rate, relative growth rate, leaf area ratio, leaf weight ratio and specific leaf area. The effect of nitrogen was detected on the variables net assimilation rate (regrowths 1 and 2), leaf area ratio (regrowth 1), leaf weight ratio (regrowths 1 and 2), specific leaf area (regrowths 1 and 2) and herbage growth rate (regrowths 1 and 2). The growth ages influenced the relative growth rate (regrowth 2)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbage growth; Net assimilation rate; Nitrogen fertilizer; Panicum maximum × Panicum infestum.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001200008

Sequential use of ammonium and leucine as nitrogen sources during growth of Geotrichum candidum on a glucose based medium
Provedor de dados: 69
Autores: Adour,Lydia; Bude,Florence; Amrane,Abdeltif.
Geotrichum candidum growth on ammonium and leucine as nitrogen sources and glucose as a carbon source was examined. A clear preference of G. candidum for ammonium over leucine as a nitrogen source was shown. Indeed, ammonium was completely exhausted at the end of exponential growth after less than 35 hrs of culture; in contrast only 5% of leucine was concomitantly assimilated. Growth continued at slower rates on glucose and leucine as carbon and nitrogen sources respectively, and at the end of culture (185 hrs), leucine was completely exhausted.
Tipo: Journal article
Palavras-chave: Amino acids; Batch culture; Diauxic growth; Geotrichum candidum; Growth kinetics.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000100013

Social Security, Unemployment, and Growth
Provedor de dados: 31
Autores: Brauninger,   Michael.
The paper develops an overlapping generations model that highlights interactions between social security, unemployment and growth.  The social security system has two components: old age pensions and unemployment insurance.  Pensions have a different effect on economic growth.  Both pensions and unemployment benefits influence equilibrium unemployment caused by wage bargaining.  Since unemployment impairs growth, both types of social security have an indirect, negative effect on growth.
Tipo: Working or Discussion Paper
Palavras-chave: Unemployment benefits; Pensions; Wage bargaining; Endogenous growth; Labor and Human Capital; E24; H55; J51; J64; J65.
Ano: 2004
URL: http://purl.umn.edu/26346

Employment and Growth Effects of Tax Reforms
Provedor de dados: 31
Autores: Michaelis,   Jochen; Birk,   Angela.
This paper explores how revenue-neutral tax reforms impact employment and economic growth in a model of endogenous growth and search frictions on the labor market. We analyze how savings and the incentive to create new jobs are affected by tax swaps between wage income taxes, payroll taxes, capital income taxes and taxes levied on capital costs. In our framework, the payroll tax is found to be neutral. If this tax is used to finance a cut in the capital income tax, we will observe an increase in both growth and, via the capitalization effect, employment. Most other tax reforms, however, imply a trade-off between employment and growth.
Tipo: Working or Discussion Paper
Palavras-chave: Search unemployment; Growth; Tax reform; Public Economics; E6; H2; J6; O4.
Ano: 2004
URL: http://purl.umn.edu/26275

The correlation between the agricultural productivity and the export performance of the agro-food foreign trade in the Visegrád Group countries following accession to the European Union
Provedor de dados: 31
Autores: Baráth,   Lajos; Nagy,   Zsuzsanna; Szabo,   Gabor G.
In this paper we have sought to answer three research questions: what was the difference between the agricultural export growth rates of the Visegrád Group countries following the EU accession; how did the multifactor productivity in the countries under study evolve; and could a correlation be observed between the growth rates of the multifactor productivity and of the agricultural exports. The average annual growth rate of the multifactor productivity was highest in Poland, followed by the growth rate in Slovakia, in Hungary and in the Czech Republic. The average annual growth rates of the exports of agricultural raw materials and of the total food economy had identical rankings except for Hungary. The results of the analysis allow the presumption that...
Tipo: Journal Article
Palavras-chave: Agro-food foreign trade; Agricultural productivity; Visegrád Group countries; Agricultural and Food Policy; International Relations/Trade; Productivity Analysis.
Ano: 2010
URL: http://purl.umn.edu/93122

Sources of Sectoral Growth in an Economy Wide Context: The Case of U.S. Agriculture
Provedor de dados: 31
Autores: Munisamy,   Gopinath; Roe,   Terry L.
Growth in US agriculture is linked to the non-farm economy through domestic terms of trade and factor market adjustments. With almost stable input growth, the relatively large contributions from growth in Total Factor Productivity (TFP) are off-set by declining real prices of primary farm products. The resulting net growth in value of farm output, at 0.25 % per annum, implies that the gains in TFP are shared by intermediate and final consumers of farm products. The decomposition of TFP suggests that public agricultural stock of knowledge and infrastructure are 'robustly' associated with TFP growth, while spill-overs from private agricultural and economy wide Research and Development (R&amp;D) are positive but, relatively small.
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 1995
URL: http://purl.umn.edu/7454

Bilateral Trade and Economic Growth: The Empirical Evidence Between U.S. and South Korea
Provedor de dados: 31
Autores: Kang,   Hyunsoo; Kennedy,   P. Lynn.
This paper analyzes the relationships between bilateral trade and economic growth in the U.S. and Korean economies. Using quarterly data from 1990 to 2008, the theoretical procedures utilize Ordinary Least Square (OLS) and Seemingly Unrelated Regression (SUR) models under the static model assumption, an Impulse Response Function (IRF) and Forecast Error Variation Decomposition (FEVD) under the Vector Autoregressive (VAR) model, and Granger causality tests. Empirical results indicate a causal relationship between bilateral export growth and economic growth for the U.S. and Korean economies. The export-led growth (ELG) hypothesis is strongly supported by the results of Granger causality tests on Korean exports.
Tipo: Journal Article
Palavras-chave: Export-led growth; Bilateral trade; Granger causality; South Korea; United States; International Relations/Trade; Political Economy; Production Economics.
Ano: 2009
URL: http://purl.umn.edu/90684

Productivity and Economic Effects of Antibiotics Used for Growth Promotion in U.S. Pork Production
Provedor de dados: 31
Autores: Miller,   Gay Y.; Algozin,   Kenneth A.; McNamara,   Paul E.; Bush,   Eric J.
Public health experts are concerned about the diminishing efficacy of antibiotics.  Some have called for a ban on growth-promoting antibiotics in animal agriculture.  This study identifies the contribution of growth-promoting antibiotics in the grower/finisher phase of U.S. pork production.  With National Animal Health Monitoring System swine data, relationships are estimated between growth-promoting antibiotic use and productivity.  Results indicate improvements in average daily gain (0.5%), feed conversion ratio (1.1%), and mortality rate (reduced 0.22 percentage points); these productivity improvements translate into a profitability gain of $0.59 per pig marketed, or an improvement of 9% in net profits associated with growth promotion antibiotics.
Tipo: Journal Article
Palavras-chave: Antibiotics; Economics; Growth promotants; Productivity; Resistance; Swine; Q12; Q18.
Ano: 2003
URL: http://purl.umn.edu/43146

Rural immigrant population growth, 1950-2000: waves or ripples?
Provedor de dados: 31
Autores: Dust,   Andrew; Orazem,   Peter F.; Wohlgemuth,   Darin.
Using U.S. Census data from 1950 to 2000, this paper provides a framework to compare the responses of immigrant and native population growth to the economic incentives offered by rural counties in the Midwest and the South. We find that in marked contrast to urban immigrant populations, rural immigrants do not congregate in ethnic enclaves. Larger rural populations of immigrants do not attract more immigrants, nor do they retard growth of the young native born population. Immigrant populations are more responsive than native populations to economic incentives. The native-born population tends to respond more to growth in specific industries, while immigrant populations are more responsive to overall employment growth. Rural immigrant population growth is...
Tipo: Working or Discussion Paper
Palavras-chave: Community/Rural/Urban Development; Labor and Human Capital.
Ano: 2008
URL: http://purl.umn.edu/6182

Inference Based on Alternative Bootstrapping Methods in Spatial Models with an Application to County Income Growth in the United States
Provedor de dados: 31
Autores: Monchuk,   Daniel C.; Hayes,   Dermot J.; Miranowski,   John A.
This study examines correlates with aggregate county income growth across the 48 contiguous states from 1990 to 2001. Since visual inspection of the variable to be explained shows a clear spatial relationship and to control for potentially endogenous variables, we estimate a two-stage spatial error model. Given the lack of theoretical and asymptotic results for such models, we propose and implement a number of spatial bootstrap algorithms, including one allowing for heteroskedasticity, to infer parameter significance. Among the results of a comparison of the marginal effects in rural versus non-rural counties, we find that outdoor recreation and natural amenities favor positive growth in rural counties, densely populated rural areas enjoy stronger growth,...
Tipo: Working or Discussion Paper
Palavras-chave: County income growth; Rural development; Spatial bootstrapping.
Ano: 2008
URL: http://purl.umn.edu/37377

GROWTH ECONOMICS AND DEVELOPMENT ECONOMICS: WHAT SHOULD DEVELOPMENT ECONOMISTS LEARN (IF ANYTHING) FROM THE NEW GROWTH THEORY?
Provedor de dados: 31
Autores: Ruttan,   Vernon W.
Since their emergence as a distinct fields of inquiry in the early post World War II period there has been an uneasy relationship between growth economics and development economics.  The emergence of a richer ‘new growth economics' has opened up the possibilities of a more fruitful dialogue between the two subdisciplines.  In spite of recent advances, particularly with respect to the human capital, and understanding of differences in growth rates and income levels across countries remains elusive.  Further advances will require that growth economists broaden their research agenda to embrace a number of concepts that have become conventional in development economics.
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 1998
URL: http://purl.umn.edu/12972

THE INFLUENCE OF SPATIAL LAND USE PATTERNS ON RURAL AMENITY VALUES AND WILLINGNESS TO PAY FOR GROWTH MANAGEMENT: EVIDENCE FROM A CONTINGENT CHOICE SURVEY
Provedor de dados: 31
Autores: Johnston,   Robert J.; Bauer,   Dana Marie; Swallow,   Stephen K.
This paper reports on a contingent choice study in which residents of a rural Rhode Island community were asked to express their preferences for packages of growth management outcomes, where surveys presented both spatial and non-spatial attributes of growth management outcomes. Survey results provide insight on the extent to which estimated willingness to pay (WTP) for marginal changes in specific landscape features or land uses may be influenced by spatial considerations.  Results also characterize the potential impact of spatial context on public preferences and WTP for coordinated packages of growth management outcomes. Keywords: Land Use, Spatial, Contingent Choice, Growth Management, Economics, Valuation
Tipo: Conference Paper or Presentation
Palavras-chave: Land Use; Spatial; Contingent Choice; Growth Management; Economics; Valuation; Land Economics/Use.
Ano: 2000
URL: http://purl.umn.edu/21766

Health and Growth: Causality through Education
Provedor de dados: 31
Autores: Huang,   Rui; Fulginiti,   Lilyan E.; Peterson,   E. Wesley F.
Replaced with revised version of paper 08/24/09.
Tipo: Conference Paper or Presentation
Palavras-chave: HIV/AIDS; Africa; Life expectancy; Growth; Overlapping generations; Health Economics and Policy; International Development; I18; I20; O15.
Ano: 2009
URL: http://purl.umn.edu/51735

Evolução do crescimento econômico dos municípios do Rio Grande do Sul
Provedor de dados: 31
Autores: Stulp,   Valter Jose.
The study analyses the convergence or not of the counties of the state of Rio Grande do Sul to a same level of income per capita. It also examines variables associated with the economic growth of the counties, such as the regional location, the participation of the economic sectors and the agrarian structure. The perspectives of regional economic growth in the State are promising. In the long run the percentage of counties with income per capita above the State average would increase from 28% to 52%. The effect of the industrial and services sectors upon the growth of income is greater than that of the agricultural sector, with the exception in the State’s Norwest region. But the agricultural sector is important for the counties economic growth because,...
Tipo: Journal Article
Palavras-chave: Economic growth; Counties; Regional convergence; Community/Rural/Urban Development.
Ano: 2005
URL: http://purl.umn.edu/55316

Why Should Regional Agricultural Productivity Growth Converge? Evidence from Italian Regions
Provedor de dados: 31
Autores: Esposti,   Roberto.
The paper analyses agricultural TFP growth across Italian regions during the 1952-2002 period, and aims at identifying those factors that favour or hinder regional agricultural TFP growth convergence. Of major relevance is whether regions, despite their inescapable heterogeneity, tend to share common technological improvements, that is, to move along the same productivity growth rate. TFP growth decomposition ultimately allows attributing observed productivity performance to convergence and divergence forces. Appropriate testing and estimation procedures are adopted to take into account panel unit-root issues and cross-sectional dependence.
Tipo: Conference Paper or Presentation
Palavras-chave: TFP growth; Convergence; Panel Data; Productivity Analysis.
Ano: 2008
URL: http://purl.umn.edu/43955

Impacts of Population and Income Growth Rates on Threatened Mammals and Birds
Provedor de dados: 31
Autores: Pandit,   Ram; Laband,   David N.
Per capita income and human population levels in a country have direct influences on its environmental outcomes. Countries with same level of income may have different rate of income growth and vice versa, suggesting that the influence of the rate of income growth on environmental outcomes could be different than that of income level. Similarly, the rate of population growth might have different impact in addition to the impacts of sheer number of population. We explore this empirical question using country-level data on threatened species published by IUCN for the year 2007. Controlling for other factors, our model estimates the influences of the rate of population and income growth on threatened mammals and birds across 113 continental countries. The...
Tipo: Conference Paper or Presentation
Palavras-chave: Income; Population; Spatial models; Spatial autocorrelation; Endemic species; Biodiversity; Environmental Economics and Policy; C21; Q57.
Ano: 2011
URL: http://purl.umn.edu/101404

THE RELATIONSHIP BETWEEN THE AGRICULTURAL AND INDUSTRIAL SECTORS IN CHINESE ECONOMIC DEVELOPMENT
Provedor de dados: 31
Autores: Koo,   Won W.; Lou,   Jianqiang.
This study examined the interdependency between Chinese agricultural and industrial sectors. A dual economic model was developed to investigate the relationship between the two sectors and factors affecting Chinese economic development. The study reveals traditional inputs, such as labor, are still important to Chinese economic development. Capital investment contributed significantly to the growth of the Chinese industrial sector, but not to the agricultural sector. The results also suggest that foreign trade has made a significant contribution to Chinese economic development. It was found that the growth of the Chinese agricultural sector depends on its industrial growth, but the growth of the Chinese industrial sector does not rely on the agricultural...
Tipo: Working or Discussion Paper
Palavras-chave: Chinese economic development; Dual economy; Growth model; Agricultural sector; Industrial sector; Foreign trade; International Development.
Ano: 1997
URL: http://purl.umn.edu/23176

MODELING ECONOMIC GROWTH WITH UNPREDICTABLE SHOCKS: A STATE-LEVEL APPLICATION FOR 1960-90
Provedor de dados: 31
Autores: Goetz,   Stephan J.; Ready,   Richard C.
A Barro-type economic growth model is estimated for the 50 states in the U.S. using data for three decades beginning in 1960. Frontier estimation techniques are used to test for the presence of state-specific shocks to economic growth that are independent of the usual, normally-distributed random errors. We find that large, positive shocks to growth occur during the period 1960-90. Our results indicate that the error term structure assumed each other OLS may not be appropriate for modeling economic growth.
Tipo: Journal Article
Palavras-chave: Economic growth; Frontier estimation; Shocks; U.S. states; Community/Rural/Urban Development.
Ano: 1995
URL: http://purl.umn.edu/15263

Environment, Human Development and Economic Growth
Provedor de dados: 31
Autores: Costantini,   Valeria; Monni,   Salvatore.
Over the last few years, environmental issues have entered into policy design, particularly development and growth policies. Natural resources are considered necessary production inputs and environmental quality is considered a welfare determinant. The integration of environmental issues into economic growth and development theories and empirics is currently widely analyzed in the literature. The effects of natural resources endowment on economic growth are mainly analyzed through the so-called Resource Curse Hypothesis (RCH) whereas the effects of economic growth on environmental quality are part of the Environmental Kuznets Curve (EKC). Furthermore, recent contributions on RCH and EKC have shown the important role of institutions and human development...
Tipo: Working or Discussion Paper
Palavras-chave: Environmental Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/12113

The Analysis of Economic Growth Cycle in Henan Province
Provedor de dados: 31
Autores: Liu,   Rong-li.
According to the data of practical GDP time sequences from 1978 to 2009 provided by Henan Statistical Yearbook of every year, Hodrick-Prescott filter model is established, and it is disintegrated into tendency component (potential yield) and fluctuation component (yield gap). The critical division loci of filter model are 4 wave crest years (1980, 1988, 1996 and 2007), and 3 trough years (1984, 1992 and 2002). Thus since the opening up and reform, the economic growth fluctuation of Henan can be divided into 3 complete cycles and 2 incomplete cycles. Based on the economic situation and background within and without province, we preliminarily conclude the stage-characteristics of all growth cycles and the probable reasons of fluctuation. On the whole, the...
Tipo: Journal Article
Palavras-chave: Economic cycle; Hodrick-Prescott filter method; Economic growth; Henan; China; Agribusiness.
Ano: 2011
URL: http://purl.umn.edu/113412

IS AGRICULTURAL SECTOR GROWTH A PRECONDITION FOR ECONOMIC GROWTH?  THE CASE OF SOUTH AFRICA
Provedor de dados: 31
Autores: Poonyth,   Daneswar; Hassan,   Rashid M.; Kirsten,   Johann F.; Calcaterra,   M.
In this paper a simple growth model is adapted to explain the effect of the agricultural sectors' growth on the non-agricultural sector.  The empirical results suggest that for a 1% growth in the agricultural sector, the non-agricultural sector responds by more than 1%.  The results also confirm that productivity difference exists, the non-agricultural sector being more efficient in terms of input use.  The empirical results support the argument of President T. Mbeki, that South Africa should follow an "agricultural-led" growth strategy for successful development.
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 2001
URL: http://purl.umn.edu/18044

Analysis on Wheat Yield in China Based on the Prediction of Yield Potential
Provedor de dados: 31
Autores: Cai,   Cheng-zhi; Li,   Sha-sha; Liang,   Ying.
The maximum geld growth range of wheat yield per unit in China is analyzed from three aspects including photosynthesis production potential of wheat, the changing trend of per unit wheat in the previous years and potential of distribution area agricultural crops. In the paper, me potential of using light, the external potential of historical yield evolution tend and AEZ (agricultural ecological zone) are applied to calculate the per unit yield potential of Chinese wheat. The results assume that the maximum growth range of per unit yield in different stages was different, before 1991 , the growth range was 10% ;before 1996, me growth range was 9% ; before 2000, the growth range was 8%. Any variety of wheat and planting technology higher than the above...
Tipo: Journal Article
Palavras-chave: Wheat; Production potential; Yield per unit; China; Agribusiness.
Ano: 2011
URL: http://purl.umn.edu/117255

EMPLOYMENT GROWTH AND THE ALLOCATION OF NEW JOBS: EVIDENCE FROM THE SOUTH
Provedor de dados: 31
Autores: Renkow,   Mitch.
A county-level labor market model is estimated for the thirteen Southern states.  The model accounts for inter-county commuting, migration, and within-county adjustments to labor demand shocks.  Econometric results indicate that most employment growth (60-70%) during the 1990s was accommodated by changes in commuting flows.  The results also suggest that labor force growth - and, by extension, population growth and associated fiscal impacts - in rural counties is sensitive to employment growth in nearby counties.  These results highlight two opposing forces related to spatial spillovers that are usually neglected in analyses of the economic and fiscal impacts of rural employment growth.
Tipo: Conference Paper or Presentation
Palavras-chave: Labor and Human Capital.
Ano: 2003
URL: http://purl.umn.edu/22169

BUSINESS GROWTH STRATEGIES OF ILLINOIS FARMS: A QUANTILE REGRESSION APPROACH
Provedor de dados: 31
Autores: Hennings,   Enrique; Katchova,   Ani L.
This study examines the business strategies employed by Illinois farms to maintain equity growth using quantile regression analysis. Using data from the Farm Business Farm Management system, this study finds that the effect of different business strategies on equity growth rates differs between quantiles. Financial management strategies have a positive effect for farms situated in the highest quantile of equity growth, while for farms in the lowest quantile the effect on equity growth is negative.  Cost reduction, asset management and revenue enhancement strategies all proved to have important effects on the determination of growth equity rates.
Tipo: Conference Paper or Presentation
Palavras-chave: Farm Management.
Ano: 2005
URL: http://purl.umn.edu/19367

REGIONAL ECONOMIC GROWTH AND INCOME DISTRIBUTION: COUNTY-LEVEL EVIDENCE FROM THE U.S. SOUTH
Provedor de dados: 31
Autores: Ngarambe,   Octavian; Goetz,   Stephan J.; Debertin,   David L.
Changes in income distribution are estimated for the U.S. South over the 1970 and 1980 decades using Gini coefficients for county-level, real family income.  To explicitly investigate causal relationships between economic growth and inequality, a two-stage least squares model was estimated.  In the 1970s, more rapid increases in inequality were associated with a reduced income growth rate, ceteris paribus, while in the 1980s, the opposite was true.  Faster rates of income growth were associated with more rapid increases in inequality during the 1980s, but rates of income growth had no effect on changes in inequality during the 1970s.
Tipo: Journal Article
Palavras-chave: Causality; Economic growth; Inequality; U.S. South; Community/Rural/Urban Development.
Ano: 1998
URL: http://purl.umn.edu/15558

Sustainable Growth and Capital Constraints: The Demutualization of Lilydale Co-operative Ltd.
Provedor de dados: 31
Autores: Hailu,   Getu; Goddard,   Ellen W.
Lilydale Co-operative Ltd was one of Canada’s largest and most geographically diversified co-operative poultry processors. In 2005, Lilydale voted to end its 65- year existence as a cooperative and converted to an investor-owned firm (Lilydale Inc.). The motivations for Lilydale’s organizational change are examined focusing on access to capital and using the sustainable growth model as the framework. For sustainable growth, a balance is required between increased actual sales and changes in financial management measures. For much of its history, Lilydale’s actual sales growth rate exceeded its sustainable growth rate. The firm may have been making financial decisions without considering all financial commitments, including increasing requirements to...
Tipo: Journal Article
Palavras-chave: Agribusiness.
Ano: 2009
URL: http://purl.umn.edu/56933

Microeconomic Approaches to Development: Schooling, Learning, and Growth
Provedor de dados: 31
Autores: Rosenzweig,   Mark R.
I illustrate the variety of approaches to development issues microeconomists employ, focusing on studies that illuminate and quantify the major mechanisms posited by growth theorists who highlight the role of education in fostering growth. I begin with a basic issue: what are the returns to schooling? I discuss microeconomic studies that estimate schooling returns  using alternative approaches to estimating wage equations, which require assumptions that are unlikely to be met in low-income countries, looking at inferences based on how education interacts with policy and technological changes in the labor and marriage markets. I then review research addressing whether schooling facilitates learning, or merely imparts knowledge, and whether there is social...
Tipo: Working or Discussion Paper
Palavras-chave: Schooling; Development; Growth; International Development; Labor and Human Capital; O11; O15; O33; J24.
Ano: 2010
URL: http://purl.umn.edu/59442

Agriculture and Rural Economic Growth
Provedor de dados: 31
Autores: Deller,   Steven C.; Gould,   Brian W.; Jones,   Bruce L.
The role of farm dependence and size on rural economic growth is examined with data from 2,240 nonmetropolitan U.S. counties for the period 1990-1995. A simple neoclassical model of regional economic growth is set forth with a central question relating to the role of agriculture on rural economic convergence.  Traditional neoclassical theory predicts that poor rural areas should grow proportionally faster than rich areas.  As interpreted in the academic literature and popular press, a preponderance of small family farms should enhance growth.  Results suggest that a higher level of local dependence on production agriculture could lower growth rates.
Tipo: Journal Article
Palavras-chave: Economic growth; Production agriculture; Rural development; O47; Q18; R11.
Ano: 2003
URL: http://purl.umn.edu/43153

Does Agriculture Really Matter for Economic Growth in Developing Countries?
Provedor de dados: 31
Autores: Awokuse,   Titus O.
In recent decades, the potential contribution of agriculture to economic growth has been a subject of much controversy among development economists. While some contend that agricultural development is a precondition to industrialization, others strongly disagree and argue for a different path. Taking advantage of recent developments in time series econometric methods, this paper re-examines the question of whether agriculture could serve as an engine of growth. Results from the empirical analysis provide strong evidence indicating that agriculture is an engine of economic growth. Furthermore, we find that trade openness has a positive effect on GDP growth.
Tipo: Conference Paper or Presentation
Palavras-chave: Agriculture; Economic growth; ARDL; Developing countries; Agricultural and Food Policy; Community/Rural/Urban Development; C23; O11; 041.
Ano: 2009
URL: http://purl.umn.edu/49762

ความสัมพันธ์ของความแตกต่างทางพันธุกรรมของยีน Insulin-like growth factor II (IGF-II) ต่อลักษณะการเจริญเติบโตและขนาดร่างกายในประชากรสุกรเชิงการค้าแห่งหนึ่ง
Provedor de dados: 106
Autores: Praew Thengpimol; Thanathip Suwanasopee; Supamit Mekchay; Skorn Koonawootrittriron.
Tipo: Collection
Palavras-chave: Swine; Insulin-like growth factor II; Growth; Body length; Shoulder width; Hip width; Backfat depth; Loin dept; Percent lean; Body conformation; IGF-II gene; สุกร; หมู; ประชากรสุกร; ความแตกต่างทางพันธุกรรม; ยีน Insulin-like growth factor II; ยีน IGF-II; จีโนไทป์; อัลลีล; การเจริญเติบโต; ขนาดร่างกาย; ความยาวลำตัว; ความกว้างไหล่; ความกว้างสะโพก; ความลึกไขมันสันหลัง; ความลึกเนื้อสัน; เปอร์เซ็นต์เนื้อแดง; การใช้ประโยชน์; การคัดเลือกพันธุ์.
Ano: 2009
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5846

Hormesis with glyphosate depends on coffee growth stage
Provedor de dados: 42
Autores: CARVALHO,LEONARDO B. DE; ALVES,PEDRO L.C.A.; DUKE,STEPHEN O.
Weed management systems in almost all Brazilian coffee plantations allow herbicide spray to drift on crop plants. In order to evaluate if there is any effect of the most commonly used herbicide in coffee production, glyphosate, on coffee plants, a range of glyphosate doses were applied directly on coffee plants at two distinct plant growth stages. Although growth of both young and old plants was reduced at higher glyphosate doses, low doses caused no effects on growth characteristics of young plants and stimulated growth of older plants. Therefore, hormesis with glyphosate is dependent on coffee plant growth stage at the time of herbicide application.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea arabica L.; Weed management; Herbicide; Spray drift; Stimulatory effect.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200813

Growth of the annual fish Cynopoecilus melanotaenia (Regan, 1912) based in a temporary water body population in Rio Grande do Sul State, Brazil (Cyprinodontiformes, Rivulidae)
Provedor de dados: 57
Autores: ARENZON,A.; PERET,A. C.; BOHRER,M. B. C.
The growth of the annual fish Cynopoecilus melanotaenia was studied in its natural environment, in order to obtain information about its biology. A total of 797 specimens of C. melanotaenia were collected on a monthly basis between April 1994 and March 1995 in a temporary water body, located in Rio Grande do Sul State, Brazil. The growth curve in total length suggests, to both sexes, a fast initial growth. Males present a smaller growth rate than females, but they attain a higher average maximum length than the females.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Annual fish; Growth; Cynopoecilus melanotaenia; Brazil.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082001000100015

HealthyGrowth Lithuanian Case Study: Fact Sheet of EKO Žemaitija
Provedor de dados: 21
Autores: Skulskis, Virgilijus; Girgždienė, Vilija.
Fact Sheet, short presentation of HealthyGrowth case study business: EKO Žemaitija.
Tipo: Other
Palavras-chave: Farm economics Processing; Packaging and transportation Markets and trade Produce chain management Lithuania.
Ano: 2015
URL: http://orgprints.org/28744/7/28744.pdf

Regional Disparities in Ghana:  Policy Options and Public Investment Implications
Provedor de dados: 31
Autores: Al-Hassan,   Ramatu M.; Diao,   Xinshen.
The development pattern in Ghana is characterised by a north-south divide in which the north lags far behind the south. Ghana has achieved sustained growth and poverty reduction during the 1990s, but such growth did not benefit the three poor northern regions and the development gap has increased between the south and north. One of the most important reasons is that much of the growth has been generated by export agriculture in which northern Ghana has little contribution if any. This paper sets out to identify avenues for pro-poor growth in Ghana, focussing on agricultural opportunities, particularly in northern Ghana. Using an economywide, multimarket model and based on time series production data between 1991 and 2000 and Ghana Living Standards Survey...
Tipo: Working or Discussion Paper
Palavras-chave: Ghana; Regional inequality; Poverty reduction; Agricultural growth; Economywide modeling; International Development.
Ano: 2007
URL: http://purl.umn.edu/42421

A Dynamic CGE Model of R&amp;D Based Growth in the U.S. Economy: An Experiment Using the New Growth Theory
Provedor de dados: 31
Autores: Diao,   Xinshen; Roe,   Terry L.
Tipo: Conference Paper or Presentation
Palavras-chave: International Development; Research and Development/Tech Change/Emerging Technologies.
Ano: 1996
URL: http://purl.umn.edu/50866

Nitrogenase activity of Beijerinckia derxii is preserved under adverse conditions for its growth
Provedor de dados: 58
Autores: Barbosa,Heloiza R.; Moretti,Marcos A.; Thuler,Daniela S.; Augusto,Elisabeth F.P.
In order to evaluate the response of Beijerinckia derxii ICB-10 to different environmental factors, growth curves and specific nitrogenase activity were studied. Tested conditions were as follows: a) media with different pH values (2.5, 2.8, 4.2 and 5.7); b) medium supplemented with 230 µM aluminium sulphate; c) media with two different potassium phosphate concentrations (50 mM and 100 mM); d) shaken or still cultures; e) medium supplemented with 40 mM sodium thiosulphate. Growth curves and specific nitrogenase activity at pH 4.2 were closely similar to those for cultures at pH 5.7 (standard condition), whereas no growth occurred at pH 2.5. Changes in growth curves and/or specific nitrogenase activity were observed under the following conditions: I) pH 2.8...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beijerinckia; Nitrogenase; Nitrogen fixation; Growth; Environmental factors.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000300007

Growth and antibacterial activity of Lentinula edodes in liquid media supplemented with agricultural wastes
Provedor de dados: 69
Autores: Hiroko Hassegawa,Regina; Megumi Kasuya,Maria Catarina; Dantas Vanetti,Maria Cristina.
Antibacterial activity of Lentinula edodes against Bacillus subtilis was evaluated in cell-free filtrates obtained after growth in 14 different culture media. The highest B. subtilis growth inhibition was promoted by filtrates of growth media supplemented with rice bran, vermiculite or molasses. L. edodes dry mycelial biomass in liquid culture with 0.5% added rice bran was 3.2 mg/ml, after growth for 30 days at 25&amp;ordm;C without shaking, and 4.3 mg/ml under orbital shaking (150 rpm). However, antibacterial activity, detected between 20 and 24 days of incubation of stationary cultures, was absent in filtrates of aerated cultures. Temperatures of 20-25&amp;ordm;C enhanced both growth and antibacterial activity. Optimum pH for L. edodes mycelial growth...
Tipo: Journal article
Palavras-chave: Bacterial inhibition; Bioconversion; Mycelial growth; Mushroom; Shiitake.
Ano: 2005
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582005000200011

Effects of culture filtrates of endophytic fungi obtained from Piper aduncum L. on the growth of Mycobacterium tuberculosis
Provedor de dados: 69
Autores: Lima,Alita Moura de; Salem,Júlia Ignez; Souza,João Vicente Braga de; Cortez,Ana Claudia Alves; Carvalho,Clarice Maia; Chaves,Francisco Célio Maia; Veiga Junior,Valdir Florêncio da.
Substances that inhibit the growth of Mycobacterium tuberculosis could potentially be used as antibiotics. These substances could also be added to test culture media to improve the speed of tuberculosis diagnosis. The aim of this work was to investigate the influence of culture filtrates of endophytic fungi isolated from P. aduncum L. on the growth of M. tuberculosis. To achieve this objective, the following methodology was used: a) endophytic fungi were isolated from the leaves and stems of P. aduncum L.; b) the isolated fungi were submitted to submerged bioprocessing; c) culture filtrates from the bioprocess were assayed to evaluate their effect on the growth of M. tuberculosis. We isolated 315 fungal types, which represented 85 morphologies, from...
Tipo: Journal article
Palavras-chave: Antagonism; Stimulation growth; Tuberculosis.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000400008

Genetic bases and variability of physiological traits involved in growth in Crassostrea gigas - Third Progress Report 1st January-31st December 1998 - Contract N°FAIR 95-421 Commission of the European Communities
Provedor de dados: 5
Autores: Gerard, Andre; Boudry, Pierre; Bougrier, Serge; Buestel, Dominique; Samain, Jean-francois; Hawkins, A. J. S.; Wilins, N.; Zouros, Eleftherios; Bonhomme, Francois; Thiriot Quievreux, Catherine.
The EU project "GENEPHYS", initiated by the IFREMER laboratory GAP-La Tremblade (Génétique Aquaculture et Pathologie) and CREMA-l'Houmeau (Centre de Recherche en Ecologie Marine et Aquaculture), aims to establish the relationships between physiological traits involved in growth (oxygen consumption, absorption efficiency, scope for growth) and their genetic bases (determinism, variability within and among populations) in cupped oyster Crassostrea gigas. The main bjectives are : 1. To express the maximum variability of growth, both at the larval stage and at the adult stage, in a oyster population originating from parents of various origins. 2. To check the persistence over the time, of growth performance and related physiological functions. 3. To explain...
Tipo: Text
Palavras-chave: Genetic; Determinism; Variability; Physilogy; Oxygen consumption; Growth; Absorption efficiency; Oysters; Crassostrea gigas.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/00050/16151/13634.pdf

Genetic bases and variability of physiological traits involved in growth in Crassostrea gigas - Second Progress Report 1st January-31st December 1997 - Contract n° FAIR 95-421 Commission of the European Communities
Provedor de dados: 5
Autores: Gerard, Andre; Boudry, Pierre; Bougrier, Serge; Hawkins, A. J. S.; Thiriot Quievreux, Catherine; Wilkins, N. P.; Zouros, Eleftherios; Bonhomme, Francois; Buestel, Dominique; Samain, Jean-francois.
The UE project "GENEPHYS", initiated by the IFREMER laboratory GAP-La Tremblade (Génétique Aquaculture et Pathologie) and CREMA-L'Houmeau (Centre de Recherche en Ecologie marine et Aquaculture), aims to establish the relationships between physiological traits involved in growth (oxygen consumption, absorption efficiency, scope for growth) and their genetic bases (determinism, variability within and among populations) in cupped oyster Crassostrea gigas. The main objectives are : 1. To express the maximum variability of growth, both at the larval stage and at the adult stage, in a oyster population originating from parents of various origins. 2. To check the persistence over the time, of growth performance and related physiological functions. 3. To explain...
Tipo: Text
Palavras-chave: Genetic; Determinism; Variability; Physilogy; Oxygen consumption; Absorption efficiency; Growth; Oysters; Crassostrea gigas.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00050/16150/13633.pdf

Metabolic and digestive activity profiles of newly hatched spotted wolffish (Anarhichas minor Olafsen): effect of temperature
Provedor de dados: 5
Autores: Savoie, A; Le Francois, N; Cahu, Chantal; Blier, P.
Three groups of newly hatched spotted wolffish (Anarhichas minor) were held at three different temperatures in order to determine relationships between metabolic, digestive and growth response in rapidly developing larvae. Growth rates were successfully modulated by temperature (5, 8 and 12 degrees C). Activity levels of trypsin and lactate dehydrogenase (LDH) were positively linked to specific growth rates at all temperatures. Trypsin showed a positive compensation (higher activity at lower temperature) whereas glycolytic enzymes (pyruvate kinase and Lactate dehydrogenase) and aspartate aminotransferase (AST) showed a negative compensation (lower activity at lower temperature). Citrate synthase was not affected by growth rate, indicating that the level of...
Tipo: Text
Palavras-chave: Anarhichas minor; Temperature; Growth; Energy metabolism; Digestive capacities.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-3810.pdf

Genetic bases and variability of physiological traits involved in growth in Crassostrea gigas - First Progress Report 1st January-31st December 1996 - Contract n° FAIR 95-421 Commission of the European Communities
Provedor de dados: 5
Autores: Gerard, Andre; Boudry, Pierre; Bougrier, Serge; Hawkins, A. J. S.; Thiriot Quievreux, Catherine; Wilkinns, N. P.; Zouros, Eleftherios; Bonhomme, Francois.
The EEC project "Genephys 1996-2000", initiated by the IFREMER laboratory GAP (Génetique, Aquaculture et Pathologie, La Tremblade and CREMA (Centre de Recherche en Ecologie Marine et Aquaculture, l'Houmeau), aims to establish the relationships between physiological traits involved in growth (oxygen consumption, absorption efficiency, scope for growth) and their genetic bases (determinism, variability within and among populations) in cupped oyster Crassostrea gigas. The main objectives are: 1- To express the maximum variability of growth, both at the larval stage and at the adult stage, in an oyster population originating from parents of various origins. 2- To check the persistence over the time, of growth performance and related physiological functions. 3-...
Tipo: Text
Palavras-chave: Genetic; Determinism; Variability; Physilogy; Oxygen consumption; Absorption efficiency; Growth; Oysters; Crassostrea gigas.
Ano: 1996
URL: http://archimer.ifremer.fr/doc/00050/16149/13632.pdf

Amylase polymorphism affects growth in the cupped oyster Crassostrea gigas
Provedor de dados: 5
Autores: Huvet, Arnaud; Samain, Jean-francois; Boudry, Pierre; Bedier, Edouard; Ropert, Michel; Van Wormhoudt, A.
The better understanding of physiological and environmental factors that determine optimal food conversion efficiencies is of major interest for the cupped oyster Crassostrea gigas for which the strong increase of aquaculture has been correlated in France with a decrease in productivity due to competition between aquatic species for limited food supplies at grow-out sites. To investigate the non-neutrality of the polymorphism of amylase, a key enzyme for carbohydrate assimilation, in oyster physiology, we report in the present paper the growth and survival measurement of amylase genotypes within five bi-parental C. gigas families, bred to be polymorph at the two PCR-RFLP amylase markers, and reared over one year under standard culture conditions in two...
Tipo: Text
Palavras-chave: Amylase markers; Growth; Amylase Polymorphism; Genetic; Oysters; Crassostrea gigas.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/acte-3311.pdf

Differences in Bodily Growth Between Young Footballers and Basketball Players
Provedor de dados: 77
Autores: Rexhepi,Agron; Brestovci,Behlul.
Human body growth means structural changes of human body, whereas development means its functional changes. The purpose of this study was to study the influence of different sports in bodily growth of the young athletes. In order to analyze the influence of different sports profiles on human physical growth, in this study, 3011 footballers and 393 basketball players were tested. Two groups of athletes, according to their ages have been separated in four groups (ages 13,14,15 and 16 years old). The evaluation of bodily growth of young athletes has been tested based on changes of nine morphometrical variables. The data obtained were analyzed in terms of basic statistical parameters, whilst the differences between independent groups were analyzed by T-test...
Tipo: Journal article
Palavras-chave: Growth; Footballers; Basketball players; Morphometrical variables; Discriminant canonical analyses.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000200014

Dynamics of Stomach Growth in the Human Fetal Period: a Postmortem Study
Provedor de dados: 77
Autores: Gworys,Bohdan; Jeka,Slawomir; Brukiewa,Radoslaw; Rymko,Marcin.
The aim of this work was to analyze the stomach growth rate, variability of proportion and shape during prenatal period, as well as evaluation of final features differentiation process distinctive for perinatal period. It seems interesting to compare stomach growth analyzed in situ on post-mortem fetuses with results obtained by other authors evaluating this process in sonographic examinations. Research was conducted on 225 post-mortem fetuses 12th to 40 th week of fetal age. There were measurements of stomach total length, lengths of greater and lesser curvature and cardia and pylorus widths performed. We evaluated the thickness of stomach front wall and bottom and its total mass. Statistical analysis was performed using statistical program package...
Tipo: Journal article
Palavras-chave: Stomach; Fetal development.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000200017

Growth of the skull of the Harbour Porpoise, Phocoena Phocoena (Linnaeus, 1758), in the North Sea, after age determination based on dentinal growth layer groups
Provedor de dados: 16
Autores: Noldus, L.P.J.J.; Klerk, R.J.J. De.
This study of the Harbour Porpoise Phocoena phocoena (Linnaeus, 1758) has been undertaken in order to find out whether differences in size and growth rate between the skulls of males and females could be demonstrated. Stuart &amp; Morejohn (1980) have established this phenomenon in the population of the north-eastern Pacific. The material on which this study is based, consists of 76 skulls present in the collection of the Rijksmuseum van Natuurlijke Historie (RMNH), Leiden. They all belong to specimens stranded on the Dutch coast. In order to determine the age, of all these specimens the number of dentinal growth layer groups (GLG) in the teeth was counted. Thereupon 32 cranial characters were measured of each skull; these measurements were plotted against...
Tipo: Article / Letter to the editor
Palavras-chave: Mammalia; Cetacea; Phocoenidae; Phocoena phocoena; North Sea; Skull; Growth; Teeth; Age determination; 42.84.
Ano: 1984
URL: http://www.repository.naturalis.nl/record/319036

Evaluación del crecimiento de Pargo Canane Ocyurus chrysurus y Biajaiba Lutjanus synagris cultivadas en jaulas flotantes en la costa de Lerma, Campeche, México
Provedor de dados: 20
Autores: García Torcuato, R.; Cervantes Trujano, M.; Ancona Ordaz, A.
Among the marine species more quoted in the coasts of Campeche in the Gulf of Mexico, we can found the pargo canane (Ocyurus chrysurus) and the biajaiba (Lutjanus synagris), that have a great demand in the national and regional market. In the installations of the Technological Institute of Lerma, has developed growing of O. chrysurus and L. synagris in floating cages, until this moment growing of these specie has been never carried out. In this work we carried out an evaluation of the growth of O. chrysurus and L. synagris at three different culture densities, in floating cages with volume of 1.5 m3. We conclude that O. chrysurus presents a greater growth rate for length and biomass (27.6 and 99.28%) with regard to L. synagris (18.99 and 76.81). The growth...
Tipo: Proceedings Paper
Palavras-chave: Marine aquaculture; Cage culture; Growth; Cage culture; Growth; Http://aims.fao.org/aos/agrovoc/c_25190; Http://aims.fao.org/aos/agrovoc/c_3394.
Ano: 2006
URL: http://hdl.handle.net/1834/2074

Relation entre la densite des microstries et le rayon de l'otolithe compatible avec le modele de von Bertanlanffy: application a Lutjanus sebae (Cuvier, 1828) aux Seychelles
Provedor de dados: 20
Autores: Bach, P.; Chauvelon, P.
The age study of fishes using daily growth increments DGI observations is made from: 1- either the exhaustive determination of increments, 2- or the calculation of daily growth increments density for different otolith zones between the nucleus and the margin edge of otolith, the width of increments being presumed constant for each zone. To apply the first method, increments may be readable individually from the nucleus to the margin edge of otolith. This is a very time consuming operation. It can cause miscalculation of increments and errors of the age estimation. The second method, called "DGI density method" is based on the decrease of the increment width in relation to the slowing down of the growth phenomena. The more used approach according to this...
Tipo: Report
Palavras-chave: LUTJANUS SEBAE; Age determination; Growth; Methodology; Otolith reading; Age determination; Growth; Methodology.
Ano: 1994
URL: http://hdl.handle.net/1834/1315

Variaciones estacionales en el crecimiento de larvas de anchoita (Engraulis anchoita).
Provedor de dados: 20
Autores: Leonarduzzi, E.
Age and growth rates of southern anchovy larvae (Engraulis anchoita)were estimated by analysis of daily increments in sagittal otoliths under light microscopy. Samples were collected during 2002 with a bongo net, in the Buenos Aires province, Argentine Sea (SW Atlantic). Otoliths corresponding to 251 larvae (size range 3.5 u 12.2 mm SL)were analyzed. Growth rate estimated as slopes by linear regression of length-age data were 0.50, 0.40, and 0.42 mm/day, and these values corresponded to larvae collected in spring, summer and autumn. Larval growth were significantly distinct between the year seasons (ANCOVA, p&lt;0.01). Recent larval growth expressed as mean growth rates during the last 4 days of the larvae was not correlated with surface temperature. The...
Tipo: Theses and Dissertations
Palavras-chave: Fish larvae; Growth; Otoliths; Seasonal variations; Daily variation; Growth; Otoliths; Fish larvae.
Ano: 2002
URL: http://hdl.handle.net/1834/1484

WP2 State of the art report Sweden, Healthy growth
Provedor de dados: 21
Autores: Elfström Fauré, Eleonore; Milestad, Rebecka; von Oelreich, Jacob.
State of the art of the organic market and situation in respect on growth processes and national studies related to this. Work package 2 in the Healthy growth project funded by Core Organic II.
Tipo: Other
Palavras-chave: Markets and trade; Policy environments and social economy; Sweden.
Ano: 2013
URL: http://orgprints.org/28254/7/28254.pdf

Promoting organic growth through model farms – use of the Leader Approach in Ukraine
Provedor de dados: 21
Autores: Eisenring, Tobias.
Interesting growth potential starts developing through the presence of few actors that spearhead most commercial activities in a sector. Such actors are very innovative but do not necessarily have all the necessary know-how. The Leader approach has a strong business development focus with the objective to strengthen such pioneers and spread the experience among small- and medium enterprises in order to enter the sector and contribute to growth.
Tipo: Conference paper, poster, etc.
Palavras-chave: "Organics" in general; Markets and trade; Produce chain management.
Ano: 2014
URL: http://orgprints.org/23268/7/23268.pdf

Environmental Policy, Education and Growth: A Reappraisal when Lifetime Is Finite
Provedor de dados: 31
Autores: Pautrel,   Xavier.
This article demonstrates that when finite lifetime is introduced in a Lucas (1988) growth model, the environmental policy may enhance growth both in the short- and the long-run, while pollution does not influence educational activities, labor supply is not elastic and human capital does not enter the utility function. This is because finite lifetime and the appearance of newborns at each date creates a turnover of generations which disconnects the aggregate consumption growth to the interest rate. We show that the shorter is the horizon, the greater the effect of the environmental policy on growth, because the higher the “generational turnover effect”. We also demonstrate that when time is not the single production factor in education, the environmental...
Tipo: Working or Discussion Paper
Palavras-chave: Growth; Environment; Overlapping Generations; Human Capital; C; O.
Ano: 2008
URL: http://purl.umn.edu/42146

Relationship between Trade Liberalisation, Growth and Balance of Payments in Developing Countries: An Econometric Study
Provedor de dados: 31
Autores: Parikh,   Ashok.
The objectives of this paper are to study the impact of liberalisation on trade deficits and current accounts of developing countries. It is expected that trade liberalisation would promote economic growth from the supply side by leading to a more efficient use of resources, by encouraging competition, and by increasing the flow of ideas and knowledge across national boundaries. Trade liberalisation could lead to faster import growth than export growth and hence the supply side benefits may be offset by the unsustainable balance of payments position. This study uses panel data of 42 countries (both time-series and cross-section dimension) to estimate the effect of trade liberalisation and growth on trade balance while controlling for other factors such as...
Tipo: Working or Discussion Paper
Palavras-chave: Panel data; Income Terms of Trade; Dynamic Optimisation; Dynamic panel model; International Relations/Trade; C21; C22; C23; F13; F14; F32.
Ano: 2004
URL: http://purl.umn.edu/26212

Productivity Growth in Indonesian Agriculture, 1961-2000
Provedor de dados: 31
Autores: Fuglie,   Keith O.
We use an index number approach to measure total factor productivity (TFP) growth in Indonesian crop and livestock agriculture between 1961-2000. A Tornqvist index is developed to minimize biases that may result from relative price changes in factor and output weights. The results indicate that agricultural TFP growth accelerated in the 1970s but was halted in the late 1990s. Agricultural productivity growth was not limited to rice but also extended to other food and horticultural crops.
Tipo: Conference Paper or Presentation
Palavras-chave: Total factor productivity; Tornqvist index; Crop Production/Industries; Productivity Analysis.
Ano: 2003
URL: http://purl.umn.edu/57868

TESTS OF MONETARY NEUTRALITY ON FARM OUTPUT
Provedor de dados: 31
Autores: Devadoss,   Stephen.
According to the monetary neutrality hypothesis, only the unanticipated money supply growth has impacts on real economic variables, and the anticipated money supply growth has no real impacts. The monetary neutrality hypothesis is tested on real farm output. The test procedure involves joint estimation of farm output and the money growth equation. The empirical results show that the anticipated money supply growth does have significant effects on farm output and, thus, do not support the monetary neutrality hypothesis.
Tipo: Journal Article
Palavras-chave: Financial Economics.
Ano: 1991
URL: http://purl.umn.edu/32626

Accelerating Growth and Structural Transformation: Ghana’s Options for Reaching Middle-Income Country Status
Provedor de dados: 31
Autores: Breisinger,   Clemens; Diao,   Xinshen; Thurlow,   James; Yu,   Bingxin; Kolavalli,   Shashidhara.
Ghana is an emerging success story in Africa and in a couple of years will become the first African country to achieve the first Millennium Development Goal of halving its national poverty rate. The government of Ghana has therefore extended its development vision and recently declared the goal of reaching middle-income-country (MIC) status by 2015. To analyze possible pathways and implications of achieving MIC status, this paper examines other countries’ experiences on their way to becoming MICs and emphasizes the important role of growth acceleration, export diversification, and economic structural change in the transformation process. The paper further analyzes Ghana’s growth options and their structural implications using a dynamic computable general...
Tipo: Working or Discussion Paper
Palavras-chave: Growth and development; Middle income country; Applied general equilibrium modeling; Ghana; Africa; International Development.
Ano: 2008
URL: http://purl.umn.edu/42347

THE IMPACT OF SCENIC AMENITIES ON RURAL EMPLOYMENT GROWTH
Provedor de dados: 31
Autores: Henderson,   Jason R.; McDaniel,   Kendall.
Throughout the 1990s, scenic rural areas have experienced faster employment growth than their counterparts.  But, rural employment growth relies on a much broader set of county characteristics than just scenic amenities. Analysis provides insight into the role of scenic amenities in rural employment growth, generally and at the sector level.
Tipo: Conference Paper or Presentation
Palavras-chave: Community/Rural/Urban Development; Labor and Human Capital; Resource /Energy Economics and Policy.
Ano: 2000
URL: http://purl.umn.edu/21725

MIGRATION, CREDIT AVAILABILITY, AND EXPENDITURE GROWTH IN RURAL VIETNAM
Provedor de dados: 31
Autores: Harigaya,   Tomoko; de Brauw,   Alan.
This paper's objective is to describe and explain expenditure growth in Vietnam over the 1990s. Using two rounds of the Vietnam Living Standards Survey, we describe and explain household specific expenditure growth rates and poverty statistics. We find that while credit access does not affect growth, migration does.
Tipo: Conference Paper or Presentation
Palavras-chave: International Development.
Ano: 2004
URL: http://purl.umn.edu/20030

EFFICIENCY CHANGE AND PRODUCTIVITY GROWTH IN EAST ASIAN AGRICULTURE
Provedor de dados: 31
Autores: Luh,   Yir-Hueih; Chang,   Ching-Cheng.
This study focuses on identifying the sources of agricultural growth for eight East Asian economies - with special emphasis on international knowledge spillovers.  The Malmquist productivity growth index and its two components are calculated and regressed on variables including domestic R&amp;D and international spillovers to characterize the differential patterns of growth.
Tipo: Conference Paper or Presentation
Palavras-chave: International Development.
Ano: 2004
URL: http://purl.umn.edu/20220

SOURCES OF GROWTH AND SUPPLY RESPONSE: A CROSS-COMMODITY ANALYSIS OF CHINA'S GRAIN SECTOR
Provedor de dados: 31
Autores: Colby,   Hunter; Diao,   Xinshen; Somwaru,   Agapi.
A growth accounting method is used to analyze the sources of growth in China's rice, wheat, corn and soybeans, the four most important crops in China's grain sector, during 1978-97.  A large TFP contribution to growth in grain production is found in the period immediately following China's rural economic reform (1978-85).  In recent years the growth rate of TFP falls sharply, contributing less than 20 percent of growth in grain production, as increased use of inputs became the major engine of growth.  If the current government policy environment remains unchanged, China's grain production will become increasingly costly and constrain future growth and competitiveness in world grain markets.  The supply response of the four grains is estimated using a...
Tipo: Working or Discussion Paper
Palavras-chave: Supply response; Economic growth; Productivity; China; Crop Production/Industries; Productivity Analysis; Q11; O4; O47.
Ano: 1999
URL: http://purl.umn.edu/12985

THE IMPLICATIONS OF AN EXPORT TAX ON SECTORAL GROWTH: A CASE IN PAKISTAN
Provedor de dados: 31
Autores: Hudson,   Darren; Ethridge,   Don E.
Impacts of an export tax on growth in the cotton and yarn markets were examined. Results of a simulation show that the export tax on raw fiber decreased the rate of growth in the fiber sector by 80%, and also decreased growth in yarn production by 0.7%.
Tipo: Conference Paper or Presentation
Palavras-chave: Crop Production/Industries; International Relations/Trade.
Ano: 1998
URL: http://purl.umn.edu/20986

DERIVING EMPIRICAL DEFINITIONS OF SPATIAL LABOR MARKETS: THE ROLES OF COMPETING VERSUS COMPLEMENTARY GROWTH
Provedor de dados: 31
Autores: Khan,   Romana; Orazem,   Peter F.; Otto,   Daniel M.
Rural communities compete with each other for firms, but their residents often commute large distances to work.  Consequently, rural communities can benefit from economic growth occurring as much as 50 miles away.  Data on county population growth shows that counties benefit from growth one or two counties away.
Tipo: Conference Paper or Presentation
Palavras-chave: Labor and Human Capital.
Ano: 1998
URL: http://purl.umn.edu/21007

Income Growth in Developing Countries Can Increase U.S. Agricultural Exports
Provedor de dados: 31
Autores: Meade,   Birgit Gisela Saager; Muhammad,   Andrew; Rada,   Nicholas E.
Developing and middle-income countries are becoming increasingly important export markets for high-value agricultural products due to population, urbanization, and income growth. The U.S. agricultural export sector is well placed to meet the increasing demand for high-value food products, such as meat, dairy products, and prepared foods. In many developing countries, agricultural productivity growth is the strongest driver of income growth.
Tipo: Article
Palavras-chave: Food Security and Poverty; International Relations/Trade.
Ano: 2011
URL: http://purl.umn.edu/121240

The End of an Era? The Medium- and Long-Term Effects of the Global Crisis on Growth in Low-Income Countries
Provedor de dados: 31
Autores: Berg,   Andrew; Papageorgiou,   Chris; Pattillo,   Catherine; Spatafora,   Nikola.
This paper investigates the medium- and long-term growth effects of the global financial crises on Low-Income Countries (LICs). Using several methodological approaches, including impulse response function analysis, growth spells techniques and panel regressions, we show that external demand (ED) shocks are not historically associated with sharp declines in output growth. Given existing evidence that LICs were primarily impacted by such a shock in the global financial crisis, our analysis provides some optimism on the chances that LICs will avoid a protracted period of slow growth. However, we also show that there seem to be persistent output losses associated with ED shocks in the medium-run. In terms of policy implications, our analysis provides evidence...
Tipo: Conference Paper or Presentation
Palavras-chave: Global financial crisis; External shocks; Low-income countries; Medium- and long-term growth; Impulse response functions; Growth spells; Panel growth regressions; Agribusiness; O11; O19; O23; O47.
Ano: 2011
URL: http://purl.umn.edu/115524

THE ROLE OF SMALL BUSINESS IN ECONOMIC GROWTH AND POVERTY ALLEVIATION IN WEST VIRGINIA: AN EMPIRICAL ANALYSIS
Provedor de dados: 31
Autores: Gebremariam,   Gebremeskel H.; Gebremedhin,   Tesfa G.; Jackson,   Randall W.
In OLS and 2SLS regression analysis a positive relationship exists between small business and economic growth. A strong inverse relationship also exists between the incidence of poverty and small business and economic growth. Thus, the empirical result establishes the linkage between small business, economic growth and the incidence of poverty
Tipo: Conference Paper or Presentation
Palavras-chave: Research Methods/ Statistical Methods.
Ano: 2004
URL: http://purl.umn.edu/20290

On Endogenous Growth: The Implications of Environmental Externalities
Provedor de dados: 31
Autores: Elbasha,   Elamin H.; Roe,   Terry L.
This paper uses an endogenous growth model to examine the interaction between trade, economic growth, and the environment. We find that whether trade enhances or retards growth depends on the relation between factor intensities of exportable, importable, and R&amp;D and the relative abundance of the factor R&amp;D uses more intensively. Depending on the intertemporal elasticity of substitution, the long-run rate of economic growth changes with environmental externalities. Concerns about the environment can explain a significant part of cross-country difference in growth rates. For the empirically reported range of the elasticity of intertemporal substitution, countries which care more about the environment grow faster. The effects of trade on the...
Tipo: Working or Discussion Paper
Palavras-chave: Environmental Economics and Policy; F11; O31; O41; Q20.
Ano: 1995
URL: http://purl.umn.edu/7493

Role of inputs, institutions, and technical innovations in stimulating growth in Chinese agriculture
Provedor de dados: 31
Autores: Fan,   Shenggen; Pardey,   Philip G.
Cover title. "September 1995"--Cover. Includes bibliographical references (p. 33-35).
Tipo: Working or Discussion Paper
Palavras-chave: Growth economics -- Models; Agricultural productivity -- China; International Development; Research and Development/Tech Change/Emerging Technologies.
Ano: 1995
URL: http://purl.umn.edu/97516

CAN AGRICULTURE AND GROWTH COEXIST? PROCEEDINGS
Provedor de dados: 31
Contents: Virginia Farming in Transition, by Wayne D. Purcell; Growth in Virginia: People and Jobs on the Move, by Todd McNew and Bradford Mills; Managing Agriculture and Growth in Virginia: The Role of Planning and Zoning, by Michael Chandler; Tools and Incentives to Manage Agriculture and Growth, by Jesse J. Richardson, Jr.; Preserving Farmland: A National Imperative, by Mary Heinricht
Tipo: Report
Palavras-chave: Community/Rural/Urban Development; Labor and Human Capital; Land Economics/Use.
Ano: 1998
URL: http://purl.umn.edu/14810

QUALITY IMPROVEMENT AND SUSTAINABLE GROWTH IN JAPANESE AGRICULTURE
Provedor de dados: 31
Autores: Oniki,   Shunji.
As modern agricultural growth has been attained through increasing use of material input, it is discussed whether agricultural growth can be sustained in the long run within the limit of environmental tolerance.  In order to investigate the possibility of growth, this study applies Aghion and Howittfs Schumpeterian growth model, and conducts empirical analyses using rice production panel data from eight regions in Japan for the period 1984 to 1999.  Estimation of the translog cost function, which incorporates quality improvement effects, as well as the growth accounting estimation, reveals that the growth with quality improvement occurs, as the growth with increasing material input is stagnant.  The quality-based innovation does not lead to increases in...
Tipo: Conference Paper or Presentation
Palavras-chave: International Development.
Ano: 2003
URL: http://purl.umn.edu/25813

Farm growth and exit: consequences of EU dairy policy reform for Dutch dairy farming
Provedor de dados: 31
Autores: Peerlings,   Jack H.M.; Ooms,   Daan L.
The purpose of this paper is to analyse farm growth and exit and its interaction in Dutch dairy farming as consequences of the 2003 CAP reform and 2008 CAP Health Check. Results indicate that the decision to exit dairy farming is largely determined by household characteristics as age and the size of the household. Farm growth is strongly influenced by the availability of labour, capital and land. Simulation results show that the dairy policy reforms reduce farm growth and exit. This is mainly caused by the quota increases.
Tipo: Conference Paper or Presentation
Palavras-chave: Agricultural and Food Policy.
Ano: 2008
URL: http://purl.umn.edu/44384

THE AGRICULTURAL EXPORT-GROWTH NEXUS IN THE EU-27 AND THE COUNTRY RISK
Provedor de dados: 31
Autores: Sassi,   Maria.
The EU agriculture is undergoing an important process of liberalization and global integration within which its growth is a key issue particularly in view of the targets of competitiveness and convergence set by the Community. In this context, the paper, focusing on the EU-27 and the time period 2000-04, analyses the agricultural export-growth nexus and the role of the country risk, aspect that is still lacking in the empirical literature.
Tipo: Conference Paper or Presentation
Palavras-chave: Agricultural growth; Agricultural openness; Country risk.; International Relations/Trade.
Ano: 2007
URL: http://purl.umn.edu/7830

THE SUSTAINABLE GROWTH PARADIGM'S APPLICATION TO U.S. FARM BUSINESSES
Provedor de dados: 31
Autores: Escalante,   Cesar L.; Turvey,   Calum G.
The sustainable growth paradigm is used to analyze aggregate output decisions across U.S. agricultural productions regions.  Results show that the farm sector has adapted to positive or negative sustainable growth challenges (SGC) and that, from an equilibrium point of view, SGC countercyclical measures indicate a usual tendency towards balanced growth.
Tipo: Conference Paper or Presentation
Palavras-chave: Production Economics.
Ano: 2004
URL: http://purl.umn.edu/35567

EMPLOYMENT GROWTH AND COMMUTING PATTERNS IN RURAL LABOR MARKETS
Provedor de dados: 31
Autores: Davis,   Elizabeth E.; Bachewe,   Fantu.
We estimate a county-level labor market model for Minnesota in order to decompose employment growth into labor force, commuting, and unemployment changes.  Preliminary results suggest that 1990-2000 employment growth was accommodated by increased in-commuting and labor force growth, with in-commuting more important in metro than rural counties.
Tipo: Conference Paper or Presentation
Palavras-chave: Labor and Human Capital.
Ano: 2004
URL: http://purl.umn.edu/19955

SOCIAL CAPITAL AND ECONOMIC GROWTH:  A COUNTY-LEVEL ANALYSIS
Provedor de dados: 31
Autores: Rupasingha,   Anil; Goetz,   Stephan J.; Freshwater,   David.
The effect of social capital on economic growth is examined using linear regression analysis and U.S. county-level data.  Results reveal that social capital has a statistically significant, independent positive effect on the rate of per-capita income growth.
Tipo: Journal Article
Palavras-chave: Economic growth; Social capital; U.S. counties; Institutional and Behavioral Economics; International Development.
Ano: 2000
URL: http://purl.umn.edu/15318

Adaptive Economic Growth
Provedor de dados: 31
Autores: Metcalfe,   John S.; Foster,   John; Ramlogan,   Ronnie.
This paper outlines an evolutionary theory of adaptive growth based on the twin principles of enterprise and the co-ordinating role of markets. The central organising idea is that economies never grow without simultaneous development. Growth as conventionally understood is a product of structural change and economic self-transformation, and these processes are closely connected with but not reducible to the growth of knowledge. The dominant theme is enterprise, the variations it generates, and the multiple connections between investment, innovation, demand and structural transformation. We explore the dependence of macroeconomic productivity growth on the diversity of technical progress functions and income elasticities of demand at the industry level, and...
Tipo: Working or Discussion Paper
Palavras-chave: Financial Economics.
Ano: 2003
URL: http://purl.umn.edu/30637

Is the Relationship Between Aid and Economic Growth Nonlinear?
Provedor de dados: 31
Autores: Kourtellos,   Andros; Tan,   Chih Ming; Zhang,   Xiaobo.
There have been intensive debates on the role of aid in promoting economic development in developing countries by using cross-country analyses. Cross-country regression assuming linear relationship between aid and growth and without taking into heterogeneity of countries would produce biased estimates. To correct this, in this paper we investigate the relationship between foreign aid and growth using recently developed sample splitting methods that allow us to simultaneously uncover evidence for the existence of heterogeneity and nonlinearity. We also address model uncertainty in the context of these methods. We find some evidence that aid may have heterogeneous effects on growth across two growth regimes defined by ethno-linguistic fractionalization....
Tipo: Working or Discussion Paper
Ano: 2007
URL: http://purl.umn.edu/42557

Regional Income Inequality and Economic Growth: A Spatial Econometrics Analysis for Provinces in the Philippines
Provedor de dados: 31
Autores: Pede,   Valerien O.; Sparks,   Adam H.; McKinley,   Justin D.
This paper revisits the inequality-growth relationship using data at the sub-national (provincial) level in the Philippines over the period 1991- 2000. A conditional convergence growth model is considered where the growth of per capita income depends on inequality and other growth factors. The contribution of each province to the overall inequality obtained from the Theil index is considered. Results indicate that inequality has a positive and significant effect on per capita income growth. However, the magnitude of the inequality effect is not stable across regions. Geographically Weighted Regression estimates show that the magnitude of the inequality growth relationship varies over a range of 0.72 to 3.36. Other results are also noteworthy in this study....
Tipo: Presentation
Palavras-chave: Clusters; Growth; Inequality; Spatial econometrics; Community/Rural/Urban Development; Research Methods/ Statistical Methods; R11; R12; O15; C21.
Ano: 2012
URL: http://purl.umn.edu/124402

Economic Growth, Lifestyle Changes, and the Coexistence of Under and Overweight in China: A Semiparametric Approach
Provedor de dados: 31
Autores: Shimokawa,   Satoru; Pinstrup-Andersen,   Per.
This paper investigates the relationship between the emerging coexistence of under and overweight and changes in socioeconomic conditions associated with economic growth in China during 1991-2000. Our key questions are: (1) whether any socioeconomic factor explains both increasing overweight and remaining underweight, (2) whether China's continuing economic growth leads to further increase in the prevalence of overweight, and (3) whether China's economic growth alone can lead to commensurate decrease in its remaining underweight. We find that changes in the pattern of job-related activity could partly explain both remaining underweight and increasing overweight, while overall income growth contributes to reducing both under and overweight. The effects of...
Tipo: Conference Paper or Presentation
Palavras-chave: Health Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/21334

Does good governance contribute to pro-poor growth? a review of the evidence from cross-country studies
Provedor de dados: 31
Autores: Resnick,   Danielle; Birner,   Regina.
Even though both “good governance” and “pro-poor growth” have become important concepts in development thinking and practice, studies that assess to which extent and how good governance contributes to pro-poor growth are still relatively scarce. After reviewing the two concepts, this paper develops a conceptual framework that specifies the linkages between different aspects of governance and pro-poor growth. Using this framework, the paper reviews a range of quantitative cross-country studies that include measures of governance as independent variables and focuses on the dependent variable in at least two of the three dimensions of pro-poor growth: poverty, inequality, and growth. The review shows that governance indicators that capture a sound...
Tipo: Report
Palavras-chave: Governance; Pro-poor growth; Cross-country studies; International Development.
Ano: 2006
URL: http://purl.umn.edu/55404

Assessing Demographic Changes and Income Inequalities: A Case Study of West Virginia
Provedor de dados: 31
Autores: Hailu,   Yohannes G.; Gebremedhin,   Tesfa G.; Jackson,   Randall W.
This study investigates demographic change and income inequalities, and relationship between economic growth and income inequality in West Virginia.  Income growth was positively related with population and employment growth, but is significantly and negatively related with income inequality. This indicates that higher income inequality is associated with slower economic growth.
Tipo: Conference Paper or Presentation
Palavras-chave: Labor and Human Capital.
Ano: 2005
URL: http://purl.umn.edu/35561

Productivity and Economic Growth in Tunisian Agriculture: An Empirical Evidence
Provedor de dados: 31
Autores: Dhehibi,   Boubaker; Lachaal,   Lassaad.
This paper analyse the patterns of productivity and economic growth in the Tunisian agriculture during the 1961–2000. Results indicated that agriculture output growth where high in both the 1961–1970 and the 1971–1980 periods but decreased during the 1991–2000 period. Average output growth exceeded 6% during the 1981–1990 period, the average output growth during 1991–2000 had fallen to 4%. Over the whole period, capital was the most important contributor to output growth and labour is considered as the least significant contributor to economic growth. Total factor productivity contribution to output growth decreased from 4.64% in 1961–1970 to 2.86% in 1971–1980. In contrast, this contribution increased in 1981-1990 to close the 4.38%. In the last period,...
Tipo: Conference Paper or Presentation
Palavras-chave: Production function; Translog; Agriculture; TFP; Tunisia; International Development; Productivity Analysis; C8; O13; O14.
Ano: 2006
URL: http://purl.umn.edu/25707

SHIFT TO INDIVIDUAL FARMING AND THE PRODUCTIVITY GROWTH OF TRANSITION AGRICULTURE
Provedor de dados: 31
Autores: Rizov,   Marian.
We analyze the impact of individualization on productivity growth within an augmented neo-classical growth model framework.  Our estimation results using a panel data covering 15 transition countries over the period 1990-2001 and applying a GMM-IV estimator support the view that the shift to individual farming, as well as the overall economic reforms, have positively contributed to the productivity growth of transition agriculture.
Tipo: Conference Paper or Presentation
Palavras-chave: Productivity Analysis.
Ano: 2004
URL: http://purl.umn.edu/20116

Production and Consumption of Foodgrains in India: Implications of Accelerated Economic Growth and Poverty Alleviation
Provedor de dados: 31
Autores: Sarma,   J.S.; Gandhi,   Vasant P.
The role of agriculture in India’s economic development continues to be of great importance, as a producer of food, as an employer of about two-thirds of the labor force, and as a source of purchasing power for much of the nonagricultural consumer goods and services in the economy. Thus, rapid growth in agricultural is essential for sustainable growth and development of the economy. Within agriculture, foodgrain production is by far the major activity, covering about 80 percent of the cropped area in India and providing the main staple source of food. Foodgrains provide almost all the calories and proteins consumed by the poor and provide the rural poor with the bulk of their employment and income. Further, with a population of some 800 million people,...
Tipo: Report
Palavras-chave: Grain trade; India; Wheat trade; Food supply; Nutrition; Poor; Crop Production/Industries; Food Consumption/Nutrition/Food Safety.
Ano: 1990
URL: http://purl.umn.edu/42163

Economic Benefits and Drawbacks of Cities and their Growth
Provedor de dados: 31
Autores: Tisdell,   Clement A.
This article provides an overview of beneficial sharing mechanisms that stimulate the growth of cities and negative sharing mechanisms and spillovers which retard their growth. The economic benefits and drawbacks of a city location are considered for businesses, employees and consumers. It is suggested that the economic benefits of agglomeration arise not so much from the type of economic goods available in a city location (such as common property or local public goods) but from the enhanced operation of processes of economic exchange made possible by the growth of cities. Two theoretical implications of the growth of cities are considered: (1) the possibility that the growth of a city results in growing inequality of income and wealth within the city and...
Tipo: Working or Discussion Paper
Palavras-chave: Agglomeration economies; China; City-sizes; Common property; Economic growth; Globalization; Income distribution; Open-access resources; Quasi-public goods; Spillovers.; Community/Rural/Urban Development.
Ano: 2008
URL: http://purl.umn.edu/90615

Description of growth and body composition of freshwater angelfish (Pterophyllum scalare) by Gompertz model
Provedor de dados: 96
Autores: Espitia-Manrique,Carmen Helena; Fernandes,João Batista Kochenborger; Sakomura,Nilva Kazue; Arias-Vigoya,Ángel Andrés; Nascimento,Thiago Matias Torres do; Silva,Edney Pereira da; Mansano,Cleber Fernando Menegasso.
ABSTRACT The objective of this study was to describe the growth of freshwater angelfish (Pterophyllum scalare) using the Gompertz model, determining the relative growth and allometric coefficients of body components in relation to body weight and protein weight. Six hundred animals were grown until 233 days of age. Data on chemical composition (water, lipid, protein, and ash) and weight measurements were obtained each 30 days. The Gompertz growth equation was used to analyze chemical allometry and to estimate growth parameters. The relationship between chemical components and body protein was estimated. Protein and body weight increased proportionally, with ash being the earliest nutrient (209.2 days), while lipid deposition occurred later. Linear...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometry; Growth curve; Ornamental fish.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000800631

Growth hormone-insuline-like growth factor-I system in pejerrey Odontesthes bonariensis (Atheriniformes)
Provedor de dados: 96
Autores: Arranz,S.E.; Sciara,A. A.; Botta,P.; Cerutti,P.; Tobin,M.; Somoza,G.M.
Using biotechnology to increase the growth rates of fish is likely to reduce production costs per unit of food. Among vertebrates, fish appear to occupy a unique position, when growth patterns are considered. With few exceptions, fish species tend to grow indeterminately, implying that size is never fixed. Both hyperplasia and hypertrophy contribute to post-larval muscle growth in fish. Growth hormone (GH) - Insulin-like Growth Factor I (IGF-I) is the most important growth axis in fish. Our experimental model, the pejerrey, Odontesthes bonariensis (Ateriniformes) is a South American inland water fish considered to be a promising species for intensive aquaculture. However, one major drawback to achieve this goal is its slow growth in captivity. In order to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth; Growth hormone; Muscle hypertrophy; Oral administration; Recombinant protein.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982008001300001

Use of mathematical models in the study of bodily growth in GIFT strain Nile tilapia
Provedor de dados: 124
Autores: Amancio,Alda Lúcia de Lima; Silva,José Humberto Vilar da; Fernandes,João Batista Kochenborger; Sakomura,Nilva Kazue; Cruz,George Rodrigo Beltrão da.
The objective of this study was to evaluate the accuracy of five mathematical models (Gompertz, Logistic, Linear Hyperbolic, Quadratic and Quadratic Logarithmic) to describe the growth curve of GIFT strain Nile tilapia, Oreochromis niloticus, and to characterize the growth trajectory of body parts. To do this, 1,000 fingerlings, with an initial weight of 2.4 g were placed into 20 brick tanks of 2 m³ each, at a density of 25 fish m-3, for 180 days. The animals were fed daily, using the protein levels and number of meals appropriate to each stage. Every two weeks 20 fish were randomly sampled, submitted to a fasting period of 48 h and then slaughtered by thermal shock, in order to determine the weight of the whole fish, the skin without scales, skinless...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oreochromis niloticus; Growth curve; Gompertz; Growth rate.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000200005

Growth and physiological quality in clonal seedlings of Robusta coffee
Provedor de dados: 124
Autores: Giuriatto Júnior,Jurandyr José Ton; Espindula,Marcelo Curitiba; Araújo,Larissa Fatarelli Bento de; Vasconcelos,Jaqueline Martins; Campanharo,Marcela.
ABSTRACT The intrinsic characteristics of the vegetative propagule may influence the rooting speed and shoot growth, as well as the final physiological quality of clonal seedlings of Coffea canephora. The aim of this study was to evaluate the growth and physiological quality of ‘Robusta’ coffee seedlings produced from propagules (stem cuttings) with different cutting ages. The study was conducted in a greenhouse, in the district of Ouro Preto do Oeste, in Rondônia, Brazil (10˚45’43” S and 62˚15’10” W). The ages of the cuttings were 30, 60, 90, 120 and 150 days, corresponding to five positions on the secondary orthotropic stem (sprout), from the apex to the base. Dry matter accumulation, and relative and absolute growth rates were evaluated for 188 days...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rubiaceae; Coffea canephora; Cuttings; Maturation stage; Weight accumulation.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000400403

"In vitro" effect of fungicides on mycelial growth of bipolaris maydis
Provedor de dados: 22
Autores: Yamashita, O. M.; Kobayashi, L.; Cassetari Neto, D.; Santi, A.; Peres, W. M.; Carvalho, M. A. C.; Kappes, C.
Leaf spot is a disease provoked by the fungus Bipolaris maydis, that it causes great damages for annual crops, as the corn, the wheat and the  oats. Tests "in vitro" were accomplished seeking to evaluate the efficiency in the inhibition of the mycelial growth of that patogenic fungus through five fungicides: tetraconazol, tebuconazole, azoxystrobin + cyproconazole, trifloxystrobin + ropiconazole and trifloxystrobin + cyproconazole were ested fungicides. For the determination of the efficiency f the products, the daily growth of the fungus was valuated, being compared with the control. It was determined the percentage of growth inhibition. All of the treatments were effective in the inhibition of the growthof this fungus.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fungus; Inhibition; Disease; Chemical control.
Ano: 2010
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/4270

Individual tree growth models for eucalyptus in northern Brazil
Provedor de dados: 63
Autores: Martins,Fabrina Bolzan; Soares,Carlos Pedro Boechat; Silva,Gilson Fernandes da.
The diameter and height growth model is one of three submodels used for simulating individual tree growth. In Brazil, there are few studies on the dimensional growth of individual trees be they native or exotic species, despite their potential. This study aimed to evaluate diameter and height growth models for individual trees for eucalyptus stands and to validate the best fitting model. Tree diameter and height data were obtained from 48 permanent plots of unthinned stands of Eucalyptus grandis × Eucalyptus urophylla hybrid located in northern Brazil. The evaluation of the diameter and height growth models was based on adjusted coefficient of determination, standard error of estimate as a percentage, trend, root mean square error and Akaike Information...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth and yield models; Forest growth prediction; Tree-level models.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000300006

Genetic control of wheat seedling root growth
Provedor de dados: 63
Autores: Camargo,Carlos Eduardo de Oliveira; Ferreira Filho,Antonio Wilson Penteado.
Wheat cultivars should have long primary roots to allow good crop establishment, considering the short crop establishment season (April) in the State of São Paulo, Brazil, where the occurrence of water stress is frequent. This paper demonstrates the control and type of inheritance of the primary root growth trait. Crosses were made between genotypes, BH-1146 and KAUZ "S"/IAC-24 M4 with strong and reduced primary root growth, respectively. F2 and F3 generation seeds from these crosses and F2 generation seeds from the backcrosses of both parents were also obtained. Seedlings from these genotypes plus the parentals were evaluated in relation to primary root growth in complete nutrient solutions containing 3.875 mg L-1 phosphorus, at pH 4.0 and a temperature...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Root growth; Nutrient solution; Recessive genes.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000400004

Estudo da diversidade de Sardinella brasiliensis (Steindachner, 1879), na área entre Macaé (22º23'S) e Ilha de Santa Catarina (27º35'S): 1. Crescimento de dimensões corporais
Provedor de dados: 104
Autores: Braga,Francisco Manoel de Souza.
The growth of body proportions of Sardinella brasiliensis was not homogeneous in the study area, between Macaé (RJ) and Santa Catarina Island (SC); the growth rates (K) of the von Bertalanffy growth curve were greater than growth rates for another áreas. In this area the biomass estimates for pelagic fish is poor, and near Cabo Frio occurs an upwelling zone. These facts permit the sardines to attain large lengths in this area. Between Rio de Janeiro and Florianópolis the growth rates were lower than in the northern part and Paranaguá Bay. On the other hand the biomass estimates for pelagic fish in Rio de Janeiro-Florianópolis region was very high, and in this zone the population density is high and the growth rates are small. Paranaguá Bay is a particular...
Tipo: Info:eu-repo/semantics/article
Ano: 1987
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751987000300006

Effects of ocean warming, eutrophication and salinity variations on the growth of habitat-forming macroalgae in estuarine environments
Provedor de dados: 39
Autores: Borburema,Henrique Douglas dos Santos; Lima,Ruth Pessoa de; Miranda,George Emmanuel Cavalcanti de.
ABSTRACT Global change and coastal eutrophication are affecting macroalgae worldwide. We analyzed the effects of increased water temperature (25, 28 and 32 °C) and eutrophication on the growth of Bostrychia binderi and Bostrychia montagnei in a range of salinities (18, 24, 30, 36 and 42 PSU) through three independent multifactorial experiments. Both species had higher growth at 25 °C than at 28 and 32 °C (warming scenario projected by IPCC), suggesting a negative effect of ocean warming. The species showed a broad tolerance to the range of salinities tested, with higher growth at 36 and 42 PSU, as a local adaptation strategy. Oligotrophic seawater significantly affected the growth of both species because the lowest growth was found in this condition,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bostrychia; Bostrychietum; Climate change; Ecophysiology; Estuarine macroalgae; Eutrophication; Global change; Growth; Salinity variation; Sea level rise.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000400662

Growth and reproduction of the mangrove crab Goniopsis cruentata (Latreille, 1803) (Crustacea: Decapoda: Grapsidae) in southeastern Brazil
Provedor de dados: 42
Autores: Reis,Carla R.G.; Taddei,Fabiano G.; Cobo,Valter J.
Goniopsis cruentata is a common semi-terrestrial crab in Brazilian mangroves and an important fishery resource for traditional communities in the northeastern Brazilian coast. Aiming to contribute to the knowledge about the species, this study evaluated the carapace width and weight growth curves, the relative growth of weight versus carapace width, and the temporal variation of gonadosomatic and hepatosomatic indices for the species. A total of 524 crabs were collected in a mangrove area of Ubatuba municipality, state of São Paulo. The growth-curves parameters and longevity (tmax) were estimated for males (CW∞=50.6 mm, WE=56.4 g, k=2.24, t0=0.003631502 year-1, tmax=1.3 years) and females (CW∞=50.7 mm, WE∞=58.8 g, k=2.50, t0=0.003247209 year-1, tmax=1.2...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gonad development; Growth curves; Hepatopancreas; Relative growth.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000200699

Modelling the growth of lactic acid bacteria at different temperatures
Provedor de dados: 52
Autores: Silva,Ana Paula Rosa da; Longhi,Daniel Angelo; Dalcanton,Francieli; Aragão,Gláucia Maria Falcão de.
ABSTRACT Mathematical models are widely used to predict the shelf life of foods. Lactic acid bacteria (LAB), particularly Lactobacillus plantarum, Weissella viridescens and Lactobacillus sakei, are the main spoilage bacteria of refrigerated, vacuum-packed meat products, stored in modified atmosphere, and their growth determines the shelf life length of these products. The objective of this study was to model the growth of L. plantarum, W. viridescens and L. sakei under different isothermal cultivation conditions and establish secondary models to describe the effect of temperature on the growth parameters of these bacteria. The LAB growth was evaluated in culture medium at temperatures of 4, 8, 12, 16, 20 and 30 ºC. The fit of Baranyi and Roberts (BAR) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Predictive microbiology; Shelf life; Bacterial spoilage.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100411

Gladius and statolith as tools for age and growth studies of the squid Loligo plei (Teuthida: Loliginidae) off southern Brazil
Provedor de dados: 52
Autores: Perez,José Angel Alvarez; Aguiar,Daniela Cordella de; Santos,João Antônio Teixeira dos.
Statolith and gladius were investigated for their suitability as tools for age and growth studies in the loliginid squid Loligo plei off southern Brazil. Statoliths when polished, revealed a series of concentric increments deposited around a nucleus. Consistent increment counts covered the squid's entire life-time and could be considered suitable for individual age estimation. Growth increments were observed on the dorsal surface as delimited by consecutive marks formed during low growth periods. Because early growth was masked during chitin deposition, total increment counts underestimated individual age. Gladius growth was highly correlated with somatic growth, and gladius increments could be used to reconstruct individual growth histories. Both...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cephalopods; Statolith; Gladius; Age; Loligo plei; Growth.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000600009

Growth kinetics of Escherichia coli O157:H7 on the epicarp of fresh vegetables and fruits
Provedor de dados: 58
Autores: Gullian-Klanian,Mariel; Sánchez-Solis,Maria José.
ABSTRACT Despite the increasing reports on the incidence of fresh vegetables and fruits as a possible vehicle for human pathogens, there is currently limited knowledge on the growth potential of Escherichia coli O157:H7 on different plant substrates. This study analyzed the selective adhesion and growth of E. coli O157:H7 on chili habanero (Capsicum chinense L.), cucumber (Cucumis sativus), radish (Raphanus sativus), tomato (Lycopersicon esculentum), beet (Beta vulgaris subsp. vulgaris), and onion (Allium cepa L.) under laboratory conditions. The Gompertz parameters were used to determine the growth kinetics. Scanning electron microscopy was used to visualize the adhesion of E. coli O157:H7 on the epicarp of the samples. Predictive models were constructed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: E. coli O157:H7; Adhesion; Predictive growth; Low selectivity; Fruit and vegetables.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000100104

Growth of Byssochlamys nivea in pineapple juice under the effect of water activity and ascospore age
Provedor de dados: 58
Autores: Zimmermann,M; Miorelli,S; Massaguer,P.R; Aragão,G.M.F.
The study of thermal resistant mould, including Byssochlamys nivea, is of extreme importance since it has been associated with fruit and fruit products. The aim of this work is to analyze the influence of water activity (a w) and ascospore age (I) on the growth of Byssochlamys nivea in pineapple juice. Mold growth was carried out under different conditions of water activity (a w) (0.99, 0.96, 0.95, 0.93, 0.90) and ascospore age (I) (30, 51, 60, 69, 90 days). Growth parameters as length of adaptation phase (λ), maximum specific growth rate (µmax) and maximum diameter reached by the colony (λ) were obtained through the fit of the Modified Gompertz model to experimental data (measuring radial colony diameter). Statistica 6.0 was used for statistical analyses...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Byssochlamys nivea; Mould growth; Pineapple juice; Water activity; Ascospore age.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000100025

Filamentous growth in Saccharomyces cerevisiae
Provedor de dados: 58
Autores: Ceccato-Antonini,Sandra Regina; Sudbery,Peter Edwin.
Fungal dimorphism is a complex phenomenon triggered by a large variety of environmental factors and consists of a reversible alternating pattern of growth between different elliptical and filamentous forms of cells. Understanding the mechanisms that regulate these events is of major interest because of their implications in fungal pathogenesis, cell differentiation and industry. Diploid cells of Saccharomyces cerevisiae transform from budding yeast to pseudohyphae when starved for nitrogen, giving the cells an advantage in food foraging, which is sensed by at least two signal transduction pathways: the MAP kinase (MAPK) and the PKA (cAMP-dependent protein kinase A) pathways. The output of these signalling pathways is the expression of pseudohypha-specific...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Filamentation; Saccharomyces cerevisiae; Pseudohyphae.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822004000200001

Crude extracts of Drimys winteri bark to inhibit growth of Gaeumannomyces graminis var. tritici
Provedor de dados: 117
Autores: Zapata,Nelson; Vargas,Marisol; Monsálvez,Manuel; Ceballos,Ricardo.
The aim of this study was to assess the effect of Drimys winteri J.R. Forst. &amp;amp; G. Forst. bark and its extracts, obtained sequentially with n-hexane, acetone, and methanol, against Gaeumannomyces graminis var. tritici (Ggt). Ground bark of D. winteri was mixed with potato dextrose agar growth media at concentrations of 250, 500, 1000, 2000, and 4000 mg L-1 in Petri plates. Each extract was mixed at concentrations of 100, 200, 400, and 800 mg L-1. Petri plates were inoculated in the center with a 5-mm mycelium disk and were incubated at 24 ± 1 ºC. Daily measurements of mycelium radial growth were taken to determine growth rate and growth inhibition (%). A ground bark concentration of 978 mg L-1 was needed to inhibit Ggt growth by 50%, while extracts...
Tipo: Journal article
Palavras-chave: Wheat take-all; Soil borne; Plant extracts; Ggt.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000100006

Effect of crop load on the phenological, vegetative and reproductive behavior of the ‘Frantoio’ olive tree (Olea europaea L.)
Provedor de dados: 118
Autores: Beyá-Marshall,Víctor; Fichet,Thomas.
The aim of this study was to characterize the phenological, vegetative and reproductive behavior variables of ‘Frantoio’ olive trees in an "off’ year (with a low crop load) and an "on" year (with a high crop load). To do this, during the 2011-2012 and 2012-2013 seasons, "off" and "on", respectively, phenological variables, plant growth (shoots and roots) and reproductive growth (type of flower, fruit set and growth), were monitored biweekly. In addition, the yield per tree was assessed, and the crop load was estimated. The main results showed that crop load strongly influenced these variables. The distribution and intensity of vegetative growth, both in the roots and aboveground, decreased more and had lower intensity in the high fruiting season, with a...
Tipo: Journal article
Palavras-chave: Alternate bearing; Flowering; Rhizotron; Root growth dynamics; Shoots; Source-sink.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000100005

A generalized nonlinear tempeature response function for some growth and developmental parameters in kiwifruit (Actinidia deliciosa (A. Chev.) C. F. Liang &amp;amp; A. R. Ferguson)
Provedor de dados: 65
Autores: Streck,Nereu Augusto.
Temperature is a major factor that affects metabolic processes in living organisms. Thermal time has been widely used to account for the effects of temperature on crop growth and development. However, the thermal time approach has been criticized because it assumes a linear relationship between the rate of crop growth or development and temperature. The response of the rate of crop growth and development to temperature is nonlinear. The objective of this study was to develop a generalized nonlinear temperature response function for some growth and developmental parameters in kiwifruit (Actinidia deliciosa (A. Chev.) C. F. Liang &amp;amp; A. R. Ferguson). The nonlinear function has three coefficients (the cardinal temperatures), which were 0ºC, 25ºC, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Temperature; Model; Growth; Development; Kiwifruit.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782003000200012

Expolinear model on soybean growth in Argentina and Brazil
Provedor de dados: 65
Autores: Confalone,Adriana Elisabet; Bernardes,Marcos Silveira; Costa,Luiz Claudio; Righi,Ciro Abbud; Dourado Neto,Durval; Martin,Thomas Newton; Manfron,Paulo Augusto; Pereira,Carlos Rodrigues.
Predicting crop growth and yield with precision are one of the main concerns of the agricultural science. For these purpose mechanistic models of crop growth have been developed and tested worldwide. The feasibility of an expolinear model for crop growth was evaluated on predicting growth modification on soybean (Glycine max L. Merrill) of determined and undetermined growth cultivars, submitted to water restrictions imposed on different phenological stages. An experiment was carried out in Azul/Argentina and in Viçosa/Brazil during the growing seasons (1997/1998, 1998/1999 and 2002/2003). The expolinear model was adjusted to the dry-matter data obtained from each treatment. The model showed sensibility of Rm (maximum relative growth rate of the culture - g...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Water deficit; Solar radiation; Temperature; Phenological phase.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000500002

Defining Old Growth for Fire-adapted Forests of the Western United States
Provedor de dados: 7
Autores: Kaufmann, Merrill R.; U.S. Forest Service (retired); mkaufmann@fs.fed.us; Binkley, Daniel; Colorado Forest Restoration Institute; dan@cnr.colostate.edu; Johnson, Marlin; U.S. Forest Service, Southwest Region; majohnson02@fs.fed.us; Stephens, Scott L.; University of California Berkeley; stephens@nature.berkeley.edu; Swetnam, Thomas W.; Lab of Tree Ring Research, University of Arizona; tswetnam@ltrr.arizona.edu.
There are varying definitions of old-growth forests because of differences in environment and differing fire influence across the Intermountain West. Two general types of forests reflect the role of fire: 1) forests shaped by natural changes in structure and species makeup&amp;#8212;plant succession&amp;#8212;that are driven by competitive differences among species and individual trees and by small-scale disturbances, and 2) forests where plant succession processes are disrupted by major biological disturbances (fire, insects, wind, or drought) extending across larger areas. Some case examples of old-growth forests where fire was historically frequent are used. The examples sketch out the typical biophysical settings, fire regime, natural disturbance...
Tipo: Peer-Reviewed article
Palavras-chave: Fire-adapted forests; Fire frequency; Fire intensity; Fire interval; Fire severity; Old-growth forests; Old-growth landscapes; Old-growth patches; Old-growth stands.
Ano: 2007

Relationship between pre- and post-metamorphic growth in the Pacific oyster Crassostrea gigas (Thunberg)
Provedor de dados: 5
Autores: Collet, Bertrand; Boudry, Pierre; Thebault, Anne; Heurtebise, Serge; Morand, Berenice; Gerard, Andre.
Twenty male and 20 female parental oysters, originating from four sites located along the French Atlantic coast, were crossed together. The 400 crosses were performed separately and then pooled to give a batch of larvae with a large genetic base. Successive sieving after 17 days at 23°C enabled the separation of the largest larvae from the batch. These larvae (i.e., sieving groups) were left to metamorphose and fix onto flat PVC collectors changed daily. Four groups of larvae representing distinctly different growth rates were successively separated during the attachment and metamorphosis of the whole population. This lasted 12 days, from the 17th day to the 29th after fertilisation. A part of each sieving group was settled separately as replicates on...
Tipo: Text
Palavras-chave: Settlement; Metamorphosis; Crassostrea gigas; Growth.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/1999/publication-468.pdf

Modelling spatio-temporal variability of Mytilus edulis (L.) growth by forcing a dynamic energy budget model with satellite-derived environmental data
Provedor de dados: 5
Autores: Thomas, Yoann; Mazurie, Joseph; Alunno-bruscia, Marianne; Bacher, Cedric; Bouget, Jean-francois; Gohin, Francis; Pouvreau, Stephane; Struski, Caroline.
In order to assess the potential of various marine ecosystems for shellfish aquaculture and to evaluate their carrying capacities, there is a need to clarify the response of exploited species to environmental variations using robust ecophysiological models and available environmental data. For a large range of applications and comparison purposes, a non-specific approach based on ‘generic’ individual growth models offers many advantages. In this context, we simulated the response of blue mussel (Mytilus edulis L.) to the spatio-temporal fluctuations of the environment in Mont Saint-Michel Bay (North Brittany) by forcing a generic growth model based on Dynamic Energy Budgets with satellite-derived environmental data (i.e. temperature and food). After a...
Tipo: Text
Palavras-chave: Mussel; DEB; SeaWifs; Aquaculture; Site Selection; Resource Management.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00037/14836/14537.pdf

モンゴル高原中央部における植物の生育に影響を及ぼす自然環境の諸要因の分析
Provedor de dados: 19
Autores: 平田, 昌弘; 岸川, 沙織; 近藤, 昭彦; 山中, 勤; 開發, 一郎; 本江, 昭夫; HIRATA, Masahiro; KISHIKAWA, Saori; KONDOH, Akihiko; YAMANAKA, Tsutomu; KAIHOTSU, Ichirow; DAMDIN, Batmunkh; HONGO, Akio; ダムディン, バトムンフ.
This stugy was carried dout to c1arifY the effects of some environmental factors on the seasonal growth of herbaceous plants and shrubs in the centra1 Mongolian plateau 2004. The relationship was analyzed between air temperature, precipitation, soil temperature，moisture as the environmenta1 factor and plant coverage，aboveground biomass as the vegetation factor. At the early plant growth stageο6 April to 30 May)，new shoots  of Chenopodiaceae，Cyperaceae and Graminae emerged 3 weeks -4 weeks after above 0 oC of mean air temperature and soil temperature. It was suggested that the plant emergence and growth are promoted according to the rise of air and soil temperature even in precipitation deficiency at the early growth stage，if water resource is enough...
Palavras-chave: Mongolian plateau; Native platnt; Plant growth; Soil temperature and moisture; Weather condition.
Ano: 2009
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2657

Application of Plant Growth Regulators to Stipa krylovii in the Xilin Gol Grassland
Provedor de dados: 87
Autores: JUN,L.V.; XUE-FENG,Z.; ANJUM,S.A.; JI-XUAN,S.; YAN,Z.; YU-FENG,D.; ZOHAIB,A.; ALI,I.; YU,XU; XIU-JUAN,H.; SAN-GEN,W.
ABSTRACT: Plant growth regulators are an immense group of substances that have the ability to alter growth pattern of plants and can be used for improving plant growth and productivity. A study was conducted in the Xilin Gol grassland of Inner Mongolia, China, to ascertain the growth and biomass production of Stipa krylovii in response to exogenous application of different growth regulators at various concentrations viz. naphthalene acetic acid (NAA), 6-benzylaminopurine (6-BA), brassinosteroid (BR), sodium nitrophenolate (SNP) and forchlorfenuron, and gibberellic acid (GA3). Application of growth regulators significantly enhanced the growth and biomass production of S. krylovii. The height of vegetative shoot was enhanced mostly by the application of 100...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth; Pastures; Biomass production.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100251

Road Development, Economic Growth, and Poverty Reduction in China
Provedor de dados: 31
Autores: Fan,   Shenggen; Chan-Kang,   Connie.
In 1978, China initiated its economic and agricultural policy reforms. The ensuing rapid economic growth led to transportation shortages and congestion problems and increased the demand for roads. Since 1985 the government has given high priority to road development, particularly the construction of high-quality roads such as highways and freeways. While the construction of high-quality roads has taken place at a remarkably rapid pace, the construction of lower-quality and mostly rural roads has been slow. This study evaluates the contribution of roads to economic growth and poverty reduction in China. It disaggregates road infrastructure into different classes of roads to account for quality, and then estimates the impact of road investments on overall...
Tipo: Report
Palavras-chave: Roads; Economic aspects; China Infrastructure (Economics); Government policy; Rural poor; 1976–2000; China; Economic policy; 2000 conditions; Regional disparities; Economic conditions; Food Security and Poverty; International Development; Public Economics.
Ano: 2005
URL: http://purl.umn.edu/37892

Growth of marandu palisadegrass subjected to strategies of intermittent stocking
Provedor de dados: 63
Autores: Giacomini,Alessandra Aparecida; Silva,Sila Carneiro da; Sarmento,Daniel Oliveira de Lucena; Zeferino,Cauê Varesqui; Souza Júnior,Salim Jacaúna; Trindade,Júlio Kuhn da; Guarda,Vítor del'Alamo; Nascimento Júnior,Domicio do.
Grazing strategies alter sward leaf area patterns of growth, affecting herbage accumulation and utilisation. The objective of this experiment was to evaluate the growth of marandu palisadegrass (Brachiaria brizantha cv. Marandu) swards subjected to strategies of intermittent stocking. The experiment was carried out in Piracicaba, São Paulo, Brazil, from October/2004 to September/2005. Swards were grazed at 95 and 100% canopy light interception (LI) to post-grazing heights of 10 and 15 cm, following a 2 × 2 factorial arrangement with four replications in a randomised complete block design. The response variables evaluated were: crop growth rate, relative growth rate, net assimilation rate, leaf area ratio and leaf weight ratio. In early and late spring, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brachiaria brizantha; Canopy light interception; Regrowth; Grazing management.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000600003

Sward structure of marandu palisadegrass subjected to continuous stocking and nitrogen-induced rhythms of growth
Provedor de dados: 63
Autores: Pereira,Lilian Elgalise Techio; Paiva,Adenilson José; Silva,Sila Carneiro da; Caminha,Fábio Olegário; Guarda,Vitor Del'Álamo; Pereira,Priscila de Mesquita.
Acceleration of the growth rhythm of plants using nitrogen fertiliser alters the rates of physiological processes like growth and senescence and may cause significant changes in sward structure, interfering with plant and animal responses. The objective of this experiment was to evaluate sward structure of marandu palisadegrass (Brachiaria brizantha) maintained at 30 cm under continuous stocking and subjected to contrasting rhythms of growth from January 2007 to April 2008. These were generated using or not nitrogen fertiliser, and comprised four experimental treatments as follows: control (non-fertilised), 150, 300 and 450 kg ha-1 of N. Acceleration of the growth rhythm of plants was associated with increases in leaf and stem bulk density, and resulted in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbage bulk density; Morphological composition; Grazing management; Nitrogen.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000500006

Response of the growth plate of uremic rats to human growth hormone and corticosteroids
Provedor de dados: 56
Autores: Barbosa,A.P.F.; Silva,J.D.P.; Fonseca,E.C.; Lopez,P.M.; Fernandes,M.B.C.; Balduino,A.; Duarte,M.E.L.
Children with chronic renal failure in general present growth retardation that is aggravated by corticosteroids. We describe here the effects of methylprednisolone (MP) and recombinant human growth hormone (rhGH) on the growth plate (GP) of uremic rats. Uremia was induced by subtotal nephrectomy in 30-day-old rats, followed by 20 IU kg-1 day-1 rhGH (N = 7) or 3 mg kg-1 day-1 MP (N = 7) or 20 IU kg-1 day-1 rhGH + 3 mg kg-1 day-1 MP (N = 7) treatment for 10 days. Control rats with intact renal function were sham-operated and treated with 3 mg kg-1 day-1 MP (N = 7) or vehicle (N = 7). Uremic rats (N = 7) were used as untreated control animals. Structural alterations in the GP and the expression of anti-proliferating cell nuclear antigen (PCNA) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Corticosteroids; Growth hormone; Renal failure; Growth retardation; Growth plate; Insulin-like growth factor I.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000800011

MARKET OPPORUNITIES FOR AFRICAN AGRICULTURE: AN EXAMINATION OF DEMAND-SIDE CONSTRAINTS ON AGRICULTURAL GROWTH
Provedor de dados: 31
Autores: Diao,   Xinshen; Dorosh,   Paul A.; Rahman,   Shaikh Mahfuzur.
Rapid growth in the agricultural sector is central to any strategy for slashing poverty and hunger on the African continent. Yet investments aimed at increasing agricultural productivity need to be linked to market opportunities if they are not to depress commodity prices and farm incomes. It is widely perceived that high market transaction costs, weak domestic consumer demand, and lack of export possibilities are major constraints on agricultural growth prospects for Africa. But just how severe are these constraints, and what can be done to enhance market opportunities to enable agriculture to become a more powerful engine of growth for the continent?   This study addresses these questions. It concludes that non-traditional exports have the fewest...
Tipo: Working or Discussion Paper
Palavras-chave: International Development; International Relations/Trade.
Ano: 2003
URL: http://purl.umn.edu/16169

The Role of Old-growth Forests in Frequent-fire Landscapes
Provedor de dados: 7
Autores: Binkley, Daniel; Colorado Forest Restoration Institute; Binkley@WarnerCNR.colostate.edu; Sisk, Tom; Northern Arizona University, Environmental Sciences; ForestERA; Thomas.Sisk@nau.edu; Chambers, Carol; Northern Arizona University, School of Forestry; Carol.Chambers@nau.edu; Springer, Judy; Ecological Restoration Institute; judith.springer@nau.edu; Block, William; U.S. Forest Service Rocky Mountain Research Station; wblock@fs.fed.us.
Classic ecological concepts and forestry language regarding old growth are not well suited to frequent-fire landscapes. In frequent-fire, old-growth landscapes, there is a symbiotic relationship between the trees, the understory graminoids, and fire that results in a healthy ecosystem. Patches of old growth interspersed with younger growth and open, grassy areas provide a wide variety of habitats for animals, and have a higher level of biodiversity. Fire suppression is detrimental to these forests, and eventually destroys all old growth. The reintroduction of fire into degraded frequent-fire, old-growth forests, accompanied by appropriate thinning, can restore a balance to these ecosystems. Several areas require further research and study: 1) the ability...
Tipo: Peer-Reviewed article
Palavras-chave: Ecological processes; Evolutionary adaptations; Historic range of variation (HRV); Human values; Knowledge gaps; Resilience; Understory vegetation.
Ano: 2007

Age and growth parameters of cachara Pseudoplastystoma reticulatum (Siluriformes, Pimelodidae) from the Cuiabá River, Brazil
Provedor de dados: 76
Autores: Francisco,Talitha M.; Ambrósio,Angela Maria; Balbi,Thiago José; Zuliani,Marina S.; Okada,Edson K.; Gomes,Luiz C.
Age and growth parameters of cachara Pseudoplatystoma reticulatum (Eigenmann &amp;amp; Eigenmann, 1889) (Siluriformes, Pimelodidae) (males and females) were estimated through the analysis of growth rings in spines of pectoral fins. Fish were collected from January to December 2007, in the area directly influenced by the Aproveitamento Múltiplo de Manso (APM Manso) and in the Cuiabá River (upper parts of the Pantanal). The maximum number of growth rings was seven for males, and eight, for females. The analysis of temporal variations in mean marginal increment showed that rings found in the spines were formed annually, in December. Growth rings were associated to spawning (in the study region from November to March) of the species. The growth curve in length...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth rings; Pectoral fins; Von Bertalanffy model; Ford-Walford.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212011000300004

Growth of European hake (Merluccius merluccius) in the Gulf of Lions based on conventional tagging
Provedor de dados: 5
Autores: Mellon-duval, Capucine; De Pontual, Helene; Metral, Luisa; Quemener, Loic.
Growth of European hake was estimated from the results of a conventional tagging study in the Gulf of Lions, the first tagging experiment to have been undertaken on the species in Mediterranean waters. In all, 4277 hake 15–40 cm long were tagged and released on the inshore fishing grounds during spring 2006. The overall recapture rate was 6.5% and times-at-liberty ranged from 1 to 717 d. Growth rate in hake varied with size and sex. The estimated growth parameter (von Bertalanffy k) was estimated as double previously published values based on size frequency distribution in the area. Compared with recent growth parameters derived from the tagging experiments in the Bay of Biscay, k was estimated to be slightly lower in the Gulf of Lions. With this faster...
Tipo: Text
Palavras-chave: Age estimation; European hake; Growth; Mediterranean; Tagging.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00000/11134/11532.pdf

Genetic basis of growth, survival and their plasticity in the Pacific oyster Crassostrea gigas
Provedor de dados: 5
Autores: Ernande, Bruno; Boudry, Pierre; Heurtebise, Serge; Haure, Joel; Martin, Jean-louis.
Introduction : Growth and survival are the life-history traits of the most interest for oyster production since they determine biomass output (growth x survival). This study aimed to investigate whether there is genetic basis for growth, survival and their plasticity to know if a selection program is conceivable for these traits. Material and Methods : Nested half-sibs mating design was used to produce families of oysters: 5 males were each mated to three females producing 5 half-sibs families, each containing 3 full-sib families. At 15 months of age (May 1999), each full-sibs family was randomly split into five groups which were given different treatments. Two groups were placed in a constant environment: one with low food resources and another with high...
Tipo: Text
Palavras-chave: Genotyic; Plasticity; Survival; Growth; Genetic; Crassostrea gigas; Pacific oyster.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/2000/acte-3498.pdf

Individual mussel growth model using DEB (Dynamic Energy Budget) theory: revisiting the DEB parameter values for Mytilus edulis
Provedor de dados: 5
Autores: Flye Sainte Marie, Jonathan; Alunno-bruscia, Marianne; Gangnery, Aline; Rannou, Eric; Rosland, Rune; Strand, Øivind.
Mussel aquaculture is well developed in various ecosystems of temperate waters. In the aim of developing predictive tools for management of mussel aquaculture, a better understanding of relationships between the environmental conditions and mussel growth is necessary. For this purpose, development of bioenergetic models, linking environmental variables (especially food resource and temperature) and mussel growth and reproduction, are of a particular interest. Dynamic Energy Budget (DEB) theory offers a general framework to study energy flows in organisms, from assimilation to use for maintenance, growth and reproduction. This theory is appropriate for growth modelling of marine organisms and have first been applied in 1993 to model mussel growth....
Tipo: Text
Ano: 2009
URL: http://archimer.ifremer.fr/doc/00032/14368/11658.pdf

Shell Growth Performance of Hatchery Produced Pinctada margaritifera: Family Effect and Relation with Cultured Pearl Weight
Provedor de dados: 5
Autores: Ky, Chin-long; Le Moullac, Gilles.
Size is the most important and valuable quality trait of cultured pearls produced by the black-lipped pearl oyster, Pinctada margaritifera. In French Polynesia, several breeding programmes have been started that aim to improve this size trait, which is highly related to shell growth rate in both recipient and donor oysters. Shell growth rate dictates the time of grafting, size of implanted nuclei and bio-mineralisation potential of the mantle and pearl sac. We assessed shell growth rate through routine digital shell biometric analysis on 22 hatchery families produced between 2005 and 2008. These included full-sib families and half-sib families derived from polyandry (one dam crossed with two or more sires). Results showed that: 1) a significant family...
Tipo: Text
Palavras-chave: Pinctada margaritifera; Pearl oyster; Hatchery-produced families; Growth performance; Shell diameter; Cultured pearl size.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00387/49810/50384.pdf

Immunolocalization of HB-EGF in Human Skin by Streptavidin-Peroxidase (HRP) Conjugate Method
Provedor de dados: 77
Autores: Castrogiovanni,P; Mazzone,V; Imbesi,R.
EGF family growth factors consists of growth factors, such as transforming growth factor (TGF)-a, heparin-binding EGF-like growth factor (HB-EGF), amphiregulin (AR) and epiregulin, autocrine growth factors in normal human keratinocytes. HB-EGF is mitogen for epithelial cells and like other members of the EGF family, HB-EGF exerts its biological effects via interaction with the EGF receptor (EGFR). HB-EGF is an autocrine growth factor for human keratinocytes, and has a possible role as a paracrine growth factor for fibroblast. Our report concerning immunohistochemical localization of HB-EGF in normal skin by using the streptavidin-peroxidase (HRP) conjugate method, confirms previous data, revealing specific patterns of HB-EGF localization. Identification of...
Tipo: Journal article
Palavras-chave: Growth factors; Keratinocytes; Streptavidin-peroxidase conjugate.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000400015

Individual, spatial and inter-sex variation in somatic growth: a study of Piaractus mesopotamicus (Characiformes: Serrasalmidae), a long-distance freshwater Neotropical migratory fish
Provedor de dados: 83
Autores: Lourenço,Luzia da S.; Costa,Rosa Maria R. da; Rondon,Patrícia L.; Mateus,Lúcia A. F.
ABSTRACT Growth is a fundamental biological process, driven by multiple endogenous (intra-individual) and exogenous (environmental) factors that maintain individual fitness and population stability. The current study aims to assess whether individual, spatial (headwaters and floodplains) and inter-sex variation occurs in the growth of Piaractus mesopotamicus in the Cuiabá River basin. Samples were collected monthly from July 2006 to July 2007, at two areas in the Cuiabá River basin (headwaters and floodplain). Three growth models (individuals; individuals and sex factors; individuals and areas factors) were developed and compared the fish growth parameters using Akaike information criterion (AIC). The best fit to the length-at-age data was obtained by a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Age; Growth models; Inter-sex variation; Otoliths; Von Bertalanffy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000200214

Growth and reproduction in captivity unveils remarkable life-history plasticity in the smallnose fanskate, Sympterygia bonapartii (Chondrichthyes: Rajiformes)
Provedor de dados: 83
Autores: Jañez,Julieta A.; Meijide,Fernando J.; Lucifora,Luis O.; Abraham,Carolina; Argemi,Federico.
ABSTRACT We analyzed growth and reproduction of captive-born smallnose fanskates Sympterygia bonapartii. Egg cases were obtained from oviposition of two females caught in the wild and held at Temaikèn Aquarium. Following hatching, growth was analyzed in 13 females and 21 males until sexual maturity. Pattern of oviposition activity and reproductive performance were evaluated in six of the captive-reared females. Four models were fitted to growth data, among which the logistic function was the one attaining the best fit. The highest growth rate for both sexes was recorded during the first year of life, whereas growth was significantly higher in females than in males during the second year. Size at first oviposition was 61.7 ± 3.5 cm TL, similar to wild...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arhynchobatidae; Captive breeding; Growth to maturity; Reproductive performance; Skates.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000400211

Can weight/length relationship predict size at first maturity? A case study with two species of Characidae
Provedor de dados: 83
Autores: Fontoura,Nelson F.; Jesus,Anamélia S.; Larre,Gabriel G.; Porto,Juliana R.
A weight/length relationship was established for Astyanax jacuhiensis (Cope, 1894) (n = 370) and Cheirodon ibicuhiensis Eigenmann, 1915 (n = 701), from samples taken monthly in Fortaleza Lagoon, Cidreira, Rio Grande do Sul, from December 1991 through November 1992. Both species showed a polyphasic allometric growth pattern, each stanza described by an independent power equation controlled by a switch function. For C. ibicuhiensis, this change in the growth pattern occurred at 2.948 cm standard length (SL), close to published sizes for the attainment of female maturity. The change in the growth pattern of A. jacuhiensis (SL = 3.481 cm) was below the predicted size at first maturity, and merits further investigation. Although not conclusive, our data suggest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometric growth; Polyphasic growth; Growth stanza; Reproduction; Fish.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000400013

New approaches for growth improvement in pejerrey Odontesthes bonariensis (Valenciennes, 1835) culture (Atherinomorpha: Atherinopsidae)
Provedor de dados: 83
Autores: Solimano,Patricio J.; Souza,Javier R. Garcia de; Maiztegui,Tomás; Baigún,Claudio R. M.; Colautti,Darío C.
The pejerrey is the most important recreational species in shallow temperate lakes and reservoirs of Argentina and the attempts to develop its culture have started a century ago. A common constraint of pejerrey aquaculture is its poor growth under traditional intensive rearing techniques. The aim of this study was to evaluate the possibility to achieve and maintain high growth rates of pejerrey throughout the rearing process by semi-intensive culture method . Four floating cages were installed in La Salada de Monasterio Lake and each one was stocked with 300 juveniles (10.22 ±0.38cm; 6.52 ±0.82g). From January through March all fish were exposed to natural zooplankton as food source, whereas from April to September two cages were supplied daily with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture; Fish growth; Floating cages; Growth rate; Zooplanktivorous.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000100213

Growth pattern off established quackgrass (Agropyron repens L. Beauv.) plants
Provedor de dados: 19
Autores: MARUYAMA, Junkoh; FUKUNAGA, Kazuo; YANAGISAWA, Junji; 丸山, 純孝; 福永, 和男; 柳澤, 淳二.
http://www.obihiro.ac.jp/~library/kenkyu.html
Palavras-chave: Agropyron repens; Weeds; Growth pattern.
Ano: 1993
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3753

採卵鶏の体重変化に対する非線形成長曲線モデルの適用
Provedor de dados: 19
Autores: 三好, 俊三; 鈴木, 三義; 光本, 孝次; MIYOSHI, Shunzo; SUZUKI, Mitsuyoshi; MITSUMOTO, Takatsugu.
Palavras-chave: 非線形成長曲線; 体重; 採卵鶏; Non-linear growth curve; Body weight; Egg-type chicken.
Ano: 1995
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/447

The Relationship between the Body Measurements of Cows and the Growth Traits of their Calves in Japanese Black Cattle
Provedor de dados: 19
Autores: 口田, 圭吾; 千葉, 和義; 山岸, 敏宏; 内田, 宏; 西田, 朗; Kuchida, Keigo; Chiba, Kazuyoshi; Yamagishi, Toshihiro; Uchida, Hiroshi; Nishida, Akira.
Palavras-chave: Japanese Black cattle; Body measurements of cows; Growth records; Heritability.
Ano: 1994
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/934

Quantitative Determination of Growth of Amastigotes and Trypomastigotes in an In Vitro Cultivation System of HeLa Cells Infected with Trypanosoma cruzi
Provedor de dados: 19
Autores: Nakajima-Shimada, Junko; Hirota, Yumiko; Kaneda, Yoshimasa; Aoki, Takashi.
Palavras-chave: Trypanosoma cruzi; HeLa cells; In vitro infection; Quantitative growth determination.
Ano: 1994
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/200

Integrin-linked kinase is involved in lactoferrin-induced anchorage-independent cell growth and survival in PC12 cells
Provedor de dados: 19
Autores: Ishii, Toshiaki; Uto, Tomoka; Mori, Kaori; Fujikawa, Ryu; 石井, 利明.
Aims: Bovine lactoferrin (bLf) causes anchorage-independent cell growth in PC12 cells. The present study investigated the mechanisms involved in bLf-induced anchorage-independent cell growth and survival in PC12 cells. Main methods: The number of adherent cells and suspended cells was estimated separately by using a methyl thiazol tetrazolium (MTT) assay, and the sum of both optical density (O.D.) (570 nm) values was used as a measure of the total number of cells. Key findings: Integrin-linked kinase (ILK) plays an important role in integrin and growth factor signaling pathways. Stable transfection of PC12 cells with a dominant negative kinase-deficient mutant of ILK (DN-ILK) inhibited bLf-induced anchorage-independent cell growth. The ILK activity in the...
Palavras-chave: Bovine lactoferrin; PC12 cell; Integrin-linked kinase; Integrin; P38 MAPK; Cell suspension; Cell adhesion; Cell growth; Cell viability; Dominant-negative mutant; Anchorage-independent growth.
Ano: 2009
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2675

In vitro growth inhibitory effect of (-)-Epigallocatechin-3-gallate from green tea on the growth of equine Babesia parasites
Provedor de dados: 19
Autores: AbouLaila, M; Terkawi, M.A.; Yokoyama, N; Igarashi, I; 横山, 直明; 五十嵐, 郁男.
Palavras-chave: (-)-Epigallocatechin-3-gallate; In vitro; Babesia caballi; Babesia equi.
Ano: 2011
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3124

Growth And Moulting Of Captive Panulirus Homarus Homarus In Kenya, Western Indian Ocean.
Provedor de dados: 20
Autores: Mavuti, K.M.; Kulmiye, A.J.
Panulirus homarus homarus is the most widely distributed among the three P. homarus subspecies and is the second most important spiny lobster in the Kenyan lobster fishery after P. ornatus. Growth and moulting of lobsters, held in concrete tanks with a flow-through seawater supply and at ambient temperatures, were monitored for 18 months (October, 2001 - March, 2003). Both moult increment and moulting frequency were inversely correlated with size. Mean moult increment ranged from 4mm in the 36-45 mm CL size class to 0.6 mm in the 86-95 mm CL size class. Mean intermoult period increased from 49 days in the 46-55 mm CL size class to 81 days in the 86-95 mm CL size class. Growth rates were 19% and 46% higher for males and females, respectively during the...
Tipo: Conference Material
Palavras-chave: Panuliris homarus homarus; Injury; Growth; Moulting; Kenya; Lobster fisheries.
Ano: 2004
URL: http://hdl.handle.net/1834/723

Commercial formulations of Bacillus spp. for sugarcane pineapple disease control and growth promotion
Provedor de dados: 86
Autores: Brandi,Fabio; Heck,Daniel Winter; Ferreira,Thiago Costa; Bettiol,Wagner.
Abstract: The objective of this work was to evaluate the commercial formulations of Bacillus subtilis QST-713 and Bacillus pumilus QST-2808 on mycelial growth inhibition of Thielaviopsis paradoxa, for the control of the pineapple disease and growth promotion in sugarcane. The inhibition of mycelial growth was evaluated in paired culture tests. Bacillus isolates were transferred to Petri dishes 48 hours before the pathogen, and the zone of inhibition was determined. The direct effect of the autoclaved commercial formulations at 0, 0.001, 0.01, 0.1, 1.0, and 10.0% on the inhibition of pathogen mycelial growth was evaluated. Bacillus spp. potential in controlling the disease and promoting plant growth was evaluated in assays on plant development and disease...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum; Thielaviopsis paradoxa; Alternative control; Biological control.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018001201311

Shoot growth of Merlot and Cabernet Sauvignon grapevine varieties
Provedor de dados: 86
Autores: Borghezan,Marcelo; Gavioli,Olavo; Vieira,Hamilton Justino; Silva,Aparecido Lima da.
The objective of this work was to evaluate shoot growth of the grapevine varieties Merlot and Cabernet Sauvignon, during 2006/2007, and Cabernet Sauvignon, during 2008/2009, in São Joaquim, SC, Brazil. The experiment was carried out in a commercial vineyard trained on a vertical trellis system. The shoots of the central part of the plants were selected, and the lengths from the base to the apex of 20 shoots per cultivar were evaluated. In 2006/2007, monitoring began at pruning, on 9/15/2006, and ended on 2/6/2007, totalizing 144 days of evaluation. During the 2008/2009 cycle, phenology and shoot growth for 'Cabernet Sauvignon' were assessed from grape development (1/13/2009) (pea-sized grapes) until shoot vegetative growth had ceased. Budburst occurred in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitis vinifera; Photoperiod; Temperature; Vegetative growth.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012000200008

Growth of Vernonia ferruginea Seedlings Submitted to Thermal Stress
Provedor de dados: 87
Autores: AMARAL,C.L.; SANTOS,J.I.; PORTUGAL,C.R.S.; BRAGA,A.F.; ALVES,P.L.C.A.
ABSTRACT: Stress caused by extreme temperatures is one of the main elements that limit the geographical distribution and the seasonal growth of several plants, causing a severe delay in their development, reducing the photosynthetic rate and signaling the synthesis of defense compounds. Considering the current environmental changes and the damages that these changes can cause in plant physiology and growth, the objective of this work was to understand the interactions between temperature, physiology and growth, and to characterize the impact of temperature changes on the initial development of Vernonia ferruginea Less. Seedlings of this species were conditioned in germination chambers at previously adjusted constant temperatures (10, 20, 25, 30, and 35 oC)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomass allocation; Leaf area; Gas exchanges.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100236

EFFECT OF TRINEXAPAC-ETHYL ON GROWTH AND YIELD OF SUGARCANE
Provedor de dados: 87
Autores: FARIA,A. T.; FERREIRA,E. A.; ROCHA,P. R. R.; SILVA,D. V.; SILVA,A. A.; FIALHO,C. M. T.; SILVA,A. F.
ABSTRACT Growth regulators can be used to further retard or inhibit vegetative growth. In this sense, the objective of this study was to determine the effects of age and number of trinexapac-ethyl applications on the growth and yield of sugarcane. The experiment was in a randomized complete block design with four replications. The treatments were in a 3 x 2 + 2 factorial arrangement, where factor A corresponded to the application times of the plant growth regulator (120, 200 and 240 days after bud burst (DAB) of sugarcane) and factor B to the number of applications (one or two applications). In addition, two controls (one with three applications and another application without the regulator) were added. The application of trinexapac-ethyl decreased the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth regulator; Application timing; Number of applications.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000300491

Use of growth retardants in wheat
Provedor de dados: 87
Autores: Espindula,M.C.; Rocha,V.S.; Grossi,J.A.S.; Souza,M.A.; Souza,L.T.; Favarato,L.F.
In general, lodging has been controlled by restricting nitrogen fertilizer application and/or using short cultivars. Growth retardants can also be used to solve this problem.The objective of this study was to evaluate the effect of rates and application times of three growth retardants on Pioneiro wheat cultivar. The trial was carried out in Viçosa-MG, from May to September 2005, in a factorial and hierarchical scheme, in a randomized block design with four replications and a control treatment. The treatments consisted of 500, 1,000 and 1,500 g ha-1 of chlormequat; 62.5, 125 and 187.5 g ha-1 of trinexapac-ethyl and 40, 80 and 120 g ha-1 of paclobutrazol applied at growth stages 6 or 8, growth stage used on the scale of Feeks and Large, and a control...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chlormequat; Trinexapac-ethyl; Paclobutrazol; Triticum aestivum; Plant height; Yield.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582009000200022

IMPACT OF PRODUCTIVITY GROWTH IN CROPS AND LIVESTOCK ON WORLD FOOD TRADE PATTERNS
Provedor de dados: 31
Autores: Ludena,   Carlos E.
World food trade patterns have changed in the last 40 years with the share of world trade comprised of bulk commodities falling, and the share of world food trade comprised of processed commodities rising. These changes have been driven by a combination of supply and demand forces. On the demand side, world demand for livestock products and more highly processed food products has been rising more rapidly than that for bulk products. This increasing demand can either be met from domestic production or from foreign production – in the latter case resulting in increased international trade. The extent to which the increased demand can be met from domestic production depends importantly on the rate of productivity growth in the various components of the farm...
Tipo: Conference Paper or Presentation
Palavras-chave: International Relations/Trade.
Ano: 2004
URL: http://purl.umn.edu/20366

Preventive Countermeasures for " Immiserizing Growth in Expanding Economies" in China's Rural Areas in the New Era
Provedor de dados: 31
Autores: Pang,   Yong-hong; Wang,   Fang-fang; Liu,   You-bin.
On the basis of defining the concept of ' immiserizing growth in expanding economies , through analysing the status quo of economy in China's rural areas in the new era, this paper aims to find out the factors responsible for economic weakness of China's rural residents. It analyses the impact of market consuming economy on growth economy, and points out the phenomenon of ' immiserizing growth in expanding economies" which may be triggered by China's rapid rural economic growth as follows: first, the income disparity between urban and rural residents increases ceaselessly, the commodity prices continuously soar, and the rural residents' market consuming capacity is short; second, the wealth concentrates highly and the majority of farmers' income is low....
Tipo: Article
Palavras-chave: Lmmiserizing Growth in Expanding Economies; Social security; Poverty; China; Agribusiness.
Ano: 2011
URL: http://purl.umn.edu/121733

WHAT HAS HAPPENED TO GROWTH IN LATIN AMERICA
Provedor de dados: 31
Autores: Morley,   Samuel A.
Growth in the first post-reform decade in Latin America has been disappointing, largely because of a severe slowdown after 1995 in the countries in South America. Per capita income grew at only .9% per year between 1995 and 1999 compared to 2.7% for 1950-80 and 1.5% for the nineties as a whole. What has gone wrong? The paper finds that neither falling investment, volatile capital inflows nor the implementation of structural reforms is the problem. Indeed relative growth performance across countries is positively related to the amount of reform they adopted. Instead the problem seems to relate to a significant reduction in the growth rate of exports since 1997. Mexico, Costa Rica and the Dominican Republic did well, but every country in South America has...
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 2001
URL: http://purl.umn.edu/16310

Cross-Commodity Analysis of China's Grain Sector: Sources of Growth and Supply Response
Provedor de dados: 31
Autores: Colby,   Hunter; Diao,   Xinshen; Somwaru,   Agapi.
We investigate sources of output growth and supply response in rice, wheat, corn, and soybeans, the four most important crops in China's grain sector, during 1978-97. Using a growth accounting methodology, we found large total factor productivity (TFP) contributions to growth in grain production immediately following China's rural economic reform (1978-85). In 1995-97, the TFP contribution dropped to only 16 percent of growth in grain production, as greater use of inputs increasingly drove growth. In the supply response analysis, the results of the econometrically estimated restricted profit function confirm a joint and nonseparable multiproduct technology for China's grain sector. Complementarity prevails in the grain sector among different outputs and...
Tipo: Report
Palavras-chave: China agriculture; Growth accounting; Total factor productivity (TFP); Multi-product supply response; Crop Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/33565

The Changing Structure of Commercial Banks Lending to Agriculture
Provedor de dados: 31
Autores: Nam,   Sangjeong; Ellinger,   Paul N.; Katchova,   Ani L.
Replaced with revised version of paper 06/11/07.
Tipo: Conference Paper or Presentation
Palavras-chave: Agricultural loan; Agricultural loan growth; Quantile regression; Agricultural Finance.
Ano: 2007
URL: http://purl.umn.edu/9913

Paths to Success: The Relationship Between Human Development and Economic Growth
Provedor de dados: 31
Autores: Boozer,   Michael A.; Ranis,   Gustav; Stewart,   Frances; Suri,   Tavneet.
This paper explores the two-way relationships between Economic Growth (EG) and Human Development (HD), building on an earlier work by Ranis, Stewart, and Ramirez (2000). Here, we show that HD is not only a product of EG but also an important input to it. The paper develops new empirical strategies to estimate the strength of the two-way chains connecting HD and EG. Building on existing growth literature, we explore the empirical determinants of positive growth trajectories running from HD to EG and find that HD plays an essential role in explaining growth trajectories. Our findings point to the empirical relevance of endogenous growth models in general, and threshold effect models in particular. We also develop a measure of the strength of the EG to HD...
Tipo: Working or Discussion Paper
Palavras-chave: Human development; Economic growth; Threshold models; Labor and Human Capital; O15; O57; C23.
Ano: 2003
URL: http://purl.umn.edu/28379

Tourism and Development: A Recent Phenomenon Built on Old (Institutional) Roots?
Provedor de dados: 31
Autores: Brau,   Rinaldo; Di Liberto,   Adriana; Pigliaru,   Francesco.
Is tourism an opportunity for lagging countries in the elusive quest for growth (Easterly, 2002)? Recent empirical evidence suggests that the answer is a cautious yes. Aggregate cross-country data show that tourism specialization is likely to be associated with higher per capita GDP growth rates than those observed in industrialized countries. However, this evidence ignores the importance of institutional quality and results are likely to be biased by omitted variable problems. In this paper we frame our starting question within the general debate about the importance of good/bad institutions as fundamental determinants of economic growth (Acemoglu et al., 2001) and ask whether previous positive results of tourism on growth are in fact driven by the...
Tipo: Working or Discussion Paper
Palavras-chave: Economic Development; Tourism Specialization; Institutions; Community/Rural/Urban Development; O11; O50; O47; F43; L83.
Ano: 2010
URL: http://purl.umn.edu/59425

Borders, Market Size and Urban Growth, The Case of Saxon Towns and the Zollverein in the 19th Century
Provedor de dados: 31
Autores: Ploeckl,   Florian.
Changes in trade institutions, such as the abolishment of tariff barriers, have a potentially strong impact on economic development. The Zollverein, the 1834 customs union between German states, erased borders in much of central Europe. This paper investigates the Zollverein's economic impact through a study of urban population and its growth in the German state of Saxony.  A model of the effect of market access on urban growth is combined with an extensive data set on town populations in Saxony and its neighbors as well as an improved distance measure based on GIS techniques, which take into account elevation patterns, roads, and rivers.  The results show that Zollverein membership led to significantly higher growth for towns close to the border with...
Tipo: Working Paper
Palavras-chave: F15; N93; R12; International Relations/Trade; Zollverein; Saxony; Customs Union; Market Access; Economic Geography; GIS; Distance measurement.
Ano: 2008
URL: http://purl.umn.edu/229132

Growth-related Measures of Brand Equity Elasticity for Food Firms
Provedor de dados: 31
Autores: Liu,   Juan; Sporleder,   Thomas L.
Brand names and brand equity are recognized as important intangible assets among firm managers in the global food supply chain. This analysis investigates the long-run potential of brand equity among food processors to actually create real options for a firm's management. The empirical analysis views brand equity among food processors as a real option of growth and empirically tests selected drivers that are conceptually associated with firm growth. Results indicate that brand equity has a positive effect on the growth option value of the firm, after accounting for other major drivers of firm growth. Brand equity elasticity is estimated with respect to a firm's growth value for both the industry- and firm-level. One major implication of the analysis is...
Tipo: Journal Article
Palavras-chave: Brand equity; Brand valuation; Real options; Food firms; Growth option value; Agribusiness.
Ano: 2007
URL: http://purl.umn.edu/8172

Investigating linkages between economic growth, energy consumption and pollutant emissions in Tunisia
Provedor de dados: 31
Autores: Chebbi,   Houssem Eddine.
The aim of this study is to understand long and short-run linkages between economic growth, energy consumption and carbon emission using Tunisian data over the period 1971-2004. Cointegration procedure is used to analyze the time series properties of the series and error-correction terms were considered to test for the direction of Granger causality. Statistical findings indicate that economic growth, energy consumption and CO2 emission are related in the long-run and provide some evidence of inefficient use of energy in Tunisia, since environmental pressure tends to rise faster than economic growth. The short-run analysis, provide support for causality running from CO2 emissions growth to output growth, both in the short-run and the long-run. The results...
Tipo: Conference Paper or Presentation
Palavras-chave: Pollutant emissions; Economic growth; Cointegration; Causality; Tunisia; Environmental Economics and Policy; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2009
URL: http://purl.umn.edu/50944

Modeling and Managing Urban Growth at the Rural-Urban Fringe: A Parcel-Level Model of Residential Land Use Change
Provedor de dados: 31
Autores: Irwin,   Elena G.; Bell,   Kathleen P.; Geoghegan,   Jacqueline.
As many local and state governments in the United States grapple with increasing growth pressures, the need to understand the economic and institutional factors underlying these pressures has taken on added urgency. From an economic perspective, individual land use decisions play a central role in the manifestation of growth pressures, as changes in land use pattern are the cumulative result of numerous individual decisions regarding the use of lands. In this study, the issue of growth management is addressed by developing a spatially disaggregated, microeconomic model of land conversion decisions suitable for describing residential land use change at the rural-urban fringe. The model employs parcel-level data on land use in Calvert County, Maryland, a...
Tipo: Journal Article
Palavras-chave: Land Economics/Use.
Ano: 2003
URL: http://purl.umn.edu/31341

Projecting Spatial Pattern of Housing Growth in Tennessee
Provedor de dados: 31
Autores: Cho,   Seong-Hoon; Clark,   Christopher D.; Park,   William M.
Housing growth in Tennessee that incorporates spatial spillover and spatial heterogeneity at the level of census-block group is projected.  A deterministic interpolation technique is adopted to create alternative neighborhood variables that captures spatial spillover of neighborhood effects on housing growth without multicollinearity.  The maps drawn using the geographically weighted regression parameter estimates revealed that the local marginal effect of the housing price increases on housing growth gradually increases as one moves eastward.  The population growth in the adjacent neighborhood-block group has about 10% of marginal effect of population growth in its own block group.  The marginal effect of population growth is relatively higher in the...
Tipo: Conference Paper or Presentation
Palavras-chave: Consumer/Household Economics.
Ano: 2005
URL: http://purl.umn.edu/19392

Ecotourism and Economic Growth in the Galapagos: An Island Economy-wide Analysis
Provedor de dados: 31
Autores: Taylor,   J. Edward; Hardner,   Jared; Stewart,   Micki.
This paper raises questions about the compatibility of "ecotourism” and conservation in the unique environment of the Galapagos Islands.  It updates a 1999 economy-wide analysis that predicted that increases in tourism would result in rapid economic as well as demographic growth on the islands.  The following six years witnessed sharp growth in tourism; a restructuring of tourism around larger cruise ships and new, larger hotels; and rapid population growth.  Our findings indicate that total income (that is, the gross domestic product) of the Galapagos increased by an estimated 78% between 1999 and 2005, placing Galapagos among the fastest growing economies in the world.  Tourism continues to be far and away the major driver of economic growth; however,...
Tipo: Working or Discussion Paper
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/11950

Employment Trends in the Public Sector
Provedor de dados: 31
Autores: Deller,   Steven C.; Maher,   Craig.
A detailed assessment of employment trends in the public sector from 1979 to 2001 is provided. Particular attention is paid to the relative level of public sector employment is Wisconsin . The analysis also examines the relationship between the size of state and local government and overall employment growth from 1979-2001. Results suggest that growth in total employment and employment in the public sector are highly correlated; higher shares of total employment in the public sector in the beginning of the period are not correlated with subsequent growth rates; but a state that sees the public sector grow faster then overall employment growth tends to be associated with slower overall growth. In addition, when measuring the size of the public sector in...
Tipo: Working or Discussion Paper
Palavras-chave: Labor and Human Capital.
Ano: 2004
URL: http://purl.umn.edu/12619

BANK MARKET STRUCTURE AND LOCAL EMPLOYMENT GROWTH
Provedor de dados: 31
Autores: Collender,   Robert N.; Shaffer,   Sherrill L.
The relationship between financial structure and job growth is both an unexplored issue and a possible channel through which financial structure impacts income growth. We explore these issues using both longrun and shortrun models. Our shortrun model provides evidence of a robust relationship between local employment growth and geographic deregulation of bank activity in the United States. We also found that U.S. nonmetropolitan employment grew faster in 1973-96 where there were fewer locally owned bank offices and a more concentrated initial banking market structure; these linkages were less stable in metropolitan areas. Overall, however, we found only weak evidence in support of an employment growth channel linking bank structure to subsequent economic...
Tipo: Report
Palavras-chave: Commercial banking; Employment growth; Geographic liberalization; Bank ownership; Financial Economics; Labor and Human Capital.
Ano: 2002
URL: http://purl.umn.edu/33566

The Impact of CAFTA on Poverty, Distribution, and Growth in El Salvador
Provedor de dados: 31
Autores: Morley,   Samuel A.; Nakasone,   Eduardo; Pineiro,   Valeria.
In this paper we develop a dynamic CGE model to examine the impact of CAFTA on production, employment and poverty in El Salvador. We model four aspects of the agreement: tariff reductions, quotas, changes in the rules of origin for maquila and more generous treatment of foreign investment. The model shows that CAFTA has a small positive effect on growth, employment and poverty. Tariff reduction under CAFTA adds about .2% to the growth rate of output up to 2020. Liberalizing the rules of origin for maquila has a bigger positive effect on growth and poverty mainly because it raises the demand for exportables produced by unskilled labor. We model the foreign investment effect by assuming that capital inflows go directly to capital formation. This raises the...
Tipo: Working or Discussion Paper
Palavras-chave: CAFTA; El Salvador; Growth; Poverty; CGE model; Food Security and Poverty; International Relations/Trade.
Ano: 2007
URL: http://purl.umn.edu/42356

"Vent-For- Surplus" as a Source of Agricultural Growth in Northeast Thailand, 1950-1986
Provedor de dados: 31
Autores: Fuglie,   Keith O.
This paper reviews the "vent-for-surplus" model of agricultural development, in which access to foreign markets allows "surplus productive capacity" to be exploited. The "indirect effects" of trade contribute to long-term economic growth even after the direct gains from trade are realized. How the new income streams are distributed amongst the population may also carry implications for long-term growth prospects. The model is used to explain the rapid expansion in export crop production that has taken place in the Northeast Region of Thailand over the past twenty-five years. It is shown that the growth in export production was achieved at very little expense to the subsistence sector by employing previously underutilized land and labor resources. Growth...
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 1989
URL: http://purl.umn.edu/7507

INFORMATION AND COMMUNICATION TECHNOLOGY AND NEW ZEALAND'S PRODUCTIVITY MALAISE: AN INDUSTRY-LEVEL STUDY
Provedor de dados: 31
Autores: Engelbrecht,   Hans-Jurgen; Xayavong,   Vilaphonh.
This paper examines the link between information and communication technology (ICT) and New Zealand's labour productivity (LP) growth in 29 industries over the period 1988-2003, and over relevant sub-periods. After deriving an ICT intensity index in order to classify industries into 'more ICT intensive' and 'less ICT intensive', we compare LP growth rates for these two industry groupings. Further, we employ dummy variable regression models, including difference-in-difference models, to more formally test the relationship between ICT intensity and LP growth. The results prove to be sensitive to the time period specified. When breaks in the data series are taken into account, there seems to be support for the view that LP growth of more ICT intensive...
Tipo: Working or Discussion Paper
Palavras-chave: Information and Communication Technology; Labour Productivity Growth; ICT Intensive Industries; New Zealand.; Productivity Analysis; O47; O50.
Ano: 2004
URL: http://purl.umn.edu/23698

Economic Benefits and Drawbacks of Cities and their Growth Implications
Provedor de dados: 31
Autores: Tisdell,   Clement A.
Recent trends in the growth of cities particularly in developing countries (and especially in India and China) are identified. Beneficial and negative sharing mechanisms influencing the growth of cities are examined. Economic benefits of agglomeration arise not so much from the type of economic goods available in a city location (such as common property or local public goods) but from the enhanced operation of processes of economic exchange. Two theoretical implications of the growth of cities are considered, namely: (1) city growth results in growing inequality of income and wealth within the city and (2) a city will expand beyond its optimal size. Nevertheless, the growth of cities is linked with increased levels of per capita income nationally....
Tipo: Working or Discussion Paper
Palavras-chave: Agglomeration economies; China; City-sizes; Common property; Economic growth; Globalization; Income distribution; India; Open-access resources; Quasi-public goods; Spillovers; Community/Rural/Urban Development.
Ano: 2009
URL: http://purl.umn.edu/90626

A further step into the ELGH and TLGH for Spain and Italy
Provedor de dados: 31
Autores: Cortes-Jimenez,   Isabel; Pulina,   Manuela.
Nowadays many developing countries focus on economic policies for promoting international tourism and exports expansion as a potential source of economic growth of the country. However, the understanding of the relationship between exports and economic growth is still ongoing. When treating the relationship between tourism and economic growth, considering tourism as a non-traditional export few studies have been published to date. This paper has the objective to assess if exports and tourism have really promoted growth by means of the export-led growth hypothesis (ELGH) and the tourism-led growth hypothesis (TLGH). The cases under analysis are Spain and Italy, two of the most important countries worldwide regarding the expansion of tourism. Cointegration...
Tipo: Working or Discussion Paper
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/12137

Effects on growth of environmental policy in a small open economy
Provedor de dados: 31
Autores: Adu,   George.
This paper examines the effect of environmental policy on economic growth in a small open economy in a neoclassical framework with pollution as an input. We show that environmental policy imposes a drag on long run growth in both the open and closed economy cases. The effect of environmental policy on growth is stronger in the open economy case relative to the closed economy model if the country has strong aversion to pollution and thus serves as a net exporter of capital in the international capital market. On the other hand, if the agents in the economy have low aversion to pollution and thus import capital, the effect of environmental care on growth is stronger in the closed economy relative to the open economy. Thus, from our set-up, environmental...
Tipo: Working or Discussion Paper
Palavras-chave: Economic growth; Pollution tax; Capital-output ratio; Open economy; Capital flight; Environmental Economics and Policy; O40; O41; Q56.
Ano: 2011
URL: http://purl.umn.edu/118225

Bringing Growth Theory "Down to Earth"
Provedor de dados: 31
Autores: Lopez,   Ramon E.; Stocking,   Andrew.
Explicitly accounting for certain basic physical laws governing the “earth” sector dramatically enriches our ability to explain a high degree of diversity in observed patterns of economic growth. We provide a theoretical explanation of why some countries have been able to sustain a more or less constant and positive rate of economic growth for many decades while so many others have failed to do so. The analysis predicts that countries that have an over abundance of physical capital (a concept that is precisely defined in the text) may be unable to sustain a positive rate of economic growth over the long run. Too much physical capital may affect the dynamics of the economy ultimately leading to stagnation. The plausibility of the growth model introduced...
Tipo: Working or Discussion Paper
Palavras-chave: Endogenous growth theory; Unbalanced growth; Structural change; Stagnation; Environmental Economics and Policy; International Development; Labor and Human Capital; Political Economy; E22; Q01; O41.
Ano: 2009
URL: http://purl.umn.edu/48944

SELF-DUAL STOCHASTIC PRODUCTION FRONTIERS AND DECOMPOSITION OF OUTPUT GROWTH: THE CASE OF OLIVE-GROWING FARMS IN GREECE
Provedor de dados: 31
Autores: Karagiannis,   Giannis; Tzouvelekas,   Vangelis.
This paper provides a decomposition of output growth among olive-growing farms in Greece during the period 1987-1993 by integrating Bauer's (1990) and Bravo-Ureta and Rieger's (1991) approaches.  The proposed methodology is based on the use of self-dual production frontier functions.  Output growth is attributed to the size effect, technical change, changes in technical and input allocative inefficiency, and the scale effect.  Empirical results indicate that the scale and the input allocative inefficiency effects, which were not taken into account in previous studies on output growth decomposition analysis, have caused a 7.3% slowdown and a 11.0% increase in output growth, respectively.  Technical change was found to be the main source of TFP growth while...
Tipo: Journal Article
Palavras-chave: Production Economics.
Ano: 2001
URL: http://purl.umn.edu/31431

Growth Patterns of Two Chinese Native Goose Breeds
Provedor de dados: 89
Autores: Ibtisham,F; An,L; Li,T; Niu,Y; Xiao,M; Zhang,L; Jia,R.
ABSTRACT To study the development rules of Chinese native geese, two breeds, Shitou and Sichuan White geese were analyzed from 0 to 12 weeks of age. The growth curves were fitted with commonly used four kinds of nonlinear models (Logistic, Gompertz, Von Bertalanffy and Richards). The results showed that the growth curves were appropriately fitted with all four models but the Logistic and Richards both had the best fitting with growth curve (R2&gt;0.99). Analyzing the fitting parameters of the Logistic and Richards, we found that male Shitou had the highest adult body weight while Sichuan White female had the lowest weight. In Shitou breed, Shape parameter Predicted with Richards model was corresponded with Gompertz curve, while in Sichuan breed it was in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Goose; Chinese native breeds; Body Weight; Growth Curve; Nonlinear models.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200203

Modeling Root Growth, Crop Growth and N Uptake of Winter Wheat Based on SWMS_2D: Model and Validation
Provedor de dados: 90
Autores: Yang,Dejun; Bian,Zhengfu; Zhang,Kefeng; Xiong,Jibing; Lei,Shaogang.
ABSTRACT Simulations for root growth, crop growth, and N uptake in agro-hydrological models are of significant concern to researchers. SWMS_2D is one of the most widely used physical hydrologically related models. This model solves equations that govern soil-water movement by the finite element method, and has a public access source code. Incorporating key agricultural components into the SWMS_2D model is of practical importance, especially for modeling some critical cereal crops such as winter wheat. We added root growth, crop growth, and N uptake modules into SWMS_2D. The root growth model had two sub-models, one for root penetration and the other for root length distribution. The crop growth model used was adapted from EU-ROTATE_N, linked to the N...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agro-hydrological model; FEM; Root length distribution; Soil water content.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100520

O crescimento de Parastacus defossus (Crustacea: Decapoda: Parastacidae)
Provedor de dados: 103
Autores: Noro,Clarissa K.; Buckup,Ludwig.
The present study investigates the growth of Parastacus defossus Faxon, 1898, a fossorial species known only from Brazil (state of Rio Grande do Sul) and Uruguay. The estimated growth curve was calculated for animals from the wild and for juveniles cultivated in the laboratory. The specimens were collected monthly between January, 2003 to August, 2005, in Lami region, municipality of Porto Alegre, state of Rio Grande do Sul, Brazil. The VON BERTALANFFY (1938) growth model was used to estimate the growth curve . To calculate the modal values from the frequency distributions the software PeakFit 4.12© SeaSolve Inc., was employed. The growth curve for field animals is described by the equation: Lt = 30,98 [1 - e-0,0026 (t+44,86)] and for the juveniles...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crayfish; Growth curve; Von Bertalanffy.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000100009

Replacement and growth of primary feathers in captive rock pigeons, Columba livia (Aves: Columbidae)
Provedor de dados: 103
Autores: Mallet-Rodrigues,Francisco.
The replacement and growth of 311 primary feathers of eight captive male rock pigeons, Columba livia Gmelin, 1789 were monitored daily. Feather replacement was recorded in all months, but the primaries 1 to 5 (innermost primaries) were replaced mostly from September to December, whereas the primaries 6 to 10 (outermost primaries) were more frequently replaced from January to August. Each primary was held in plumage from six to fifteen months, but the lifetime of the outer feathers was longer than that of the inner feathers. A new primary emerges two or three days after its predecessor has been dropped, but the primaries replacing the feathers accidentally lost during bird handling emerge only after about eight days. The average growth period of a primary...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feather growth; Feather replacement; Molt; Primary feather.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702012000200004

Challenges of beef cattle production from tropical pastures
Provedor de dados: 96
Autores: Poppi,Dennis P.; Quigley,Simon P.; Silva,Tiago Alves Corrêa Carvalho da; McLennan,Stuart R.
ABSTRACT The live weight gain of cattle on tropical pastures is reviewed and found to be low and dependent on the length of the growing season. Supplements may be added to address the primary limiting nutrient, which, in the dry season, is crude protein. The response relationships of live weight gain to level of supplement (protein or energy) that have been developed for animals on pasture in Brazil and Australia have been compared and found to be very similar. This gives confidence in recommending a supplementation strategy for cattle on tropical pastures. Response in the wet season was very low and likely to be uneconomic compared with dry season supplementation. Supplementation is costly and should only be used as a last resort, but the strategy needs...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth paths; Legumes; Pastures; Skeletal growth; Supplements.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100604

Branches of Gliricidia sepium used as mulch for weed control in corn
Provedor de dados: 124
Autores: Santos,Luiz Eduardo Barreto dos; Silva,Paulo Sérgio Lima e; Oliveira,Vianney Reinaldo de; Oliveira,Antonia Kennia de.
ABSTRACT Mulching using crop residue reduces the growth of weeds and increases the yield of various crops. The aim of the present study was to evaluate the effects of Gliricidia sepium branches, used as mulch, on weed control, and on grain yield in corn. A randomized block design was used, with split plots and five replications. The cultivars, 30F35H and AG 1051, were grown in the plots, and the following treatments applied in the subplots: no weeding, two weedings, and mulching with 10, 20 or 30 t ha-1 (fresh weight) gliricidia branches. The mulch material was applied between the sowing furrows after sowing the corn. Increasing the amount of gliricidia branches caused a linear reduction in weed growth, and increased growth and yield in the corn. Weed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Number of branches; Corn yield; Weed growth; Hoeings.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000100417

Oat growth under different nitrogen doses in eucalyptus alley cropping system in subtropical Brazil
Provedor de dados: 124
Autores: Deiss,Leonardo; Moraes,Anibal de; Pelissari,Adelino; Skora Neto,Francisco; Silva,Vanderley Porfírio da; Andreolla,Veruschka Rocha Medeiros.
Plant growth analysis was performed to determine how oat (Avena sativa L. cv. IPR 126) cultivated for grain responds to the eucalyptus (Eucalyptus dunnii Maiden) alley cropping system (ACS) in subtropical Brazil. The hypothesis of this work was that oat growth response is not modified by nitrogen at distances relative to 4 year old eucalyptus tracks in the ACS. The objective of this study was to determine how the oat growth was influenced by nitrogen doses (12 and 80 kg N ha-1) at five equidistant positions between two adjacent eucalyptus double line tracks [20 m (4 m x 3 m)] in ACS and traditional no-till farming. The experiment was conducted in a split-block randomized block design with four replicates. It was evaluated the oat relative growth rate, unit...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avena sativa; Eucalyptus dunnii; Agricultural integrated systems; Growth analysis; Agroforestry.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000500017

Protease production during growth and autolysis of submerged Metarhizium anisopliae cultures
Provedor de dados: 59
Autores: Braga,Gilberto U.L.; Destéfano,Ricardo H.R.; Messias,Claudio L.
The growth and autolysis of two strains of the entomopathogenic deuteromycete fungus Metarhizium anisopliae var. anisopliae were evaluated in medium containing casein or glucose as carbon source. Parameters such as economic coefficient and degree of autolysis were determined for each strain. Protease production was determined throughout the growth and autolysis phases of the cultures on medium under conditions of protease induction (in the presence of casein as sole source of carbon and nitrogen). The fungus was shown to utilize casein as a carbon/energy source in a more efficient manner than glucose. The autolysis shown by the strains was intense under both types of growth conditions, reaching up to 62.7% of the dry mass produced and started soon after...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Metarhizium anisopliae; Protease production; Fungal growth; Fungal autolysis; Entomopathogenic fungus.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141999000200004

Gibberellin and cytokinin effects on soybean growth
Provedor de dados: 63
Autores: Leite,Vagner Maximino; Rosolem,Ciro Antonio; Rodrigues,João Domingos.
Soybean is an important crop in Brazil. Nonetheless, there are no reports on the use of plant growth regulator potential in relation to this crop in the national literature. To better understand the role of these compounds, a pot experiment was carried out to study effects of GA3 and cytokinin on the vegetative growth of the soybean. GA3 (50 mg L-1) was applied as seed treatment, leaving plants with water application as control. GA3 (100 mg L-1) and cytokinin (30 mg L-1) were sprayed on leaves at the physiological stage V3/V4, and 15 days after, cytokinin (30 mg L-1), also as foliar spray. Seed treatment decreased plant emergence and initial soybean root growth, but as the season progressed, differences in root growth disappeared; plants were shorter, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Gibberellic acid; Gibberellin; Aminopurin; Plant growth regulator.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000300019

Growth of citrus rootstocks under aluminium stress in hydroponics
Provedor de dados: 63
Autores: Pereira,Walter Esfrain; Siqueira,Dalmo Lopes de; Puiatti,Mario; Martínez,Carlos Alberto; Salomão,Luiz Carlos Chamhum; Cecon,Paulo Roberto.
Plants present different degrees of adaptation to aluminium (Al) concentrations in the soil, and the understanding of this characteristic can lead to a viable option for the utilization of acid soils. The objective of this experiment was to evaluate the effects of five Al concentrations (0, 50, 100, 200, and 400 mumol L-1) on the growth of 'Rangpur' lime (Citrus limonia Osbeck) and 'Volkamer' lemon (Citrus volkameriana Hort. ex Tan.), and tangerine rootstocks 'Cleópatra' (Citrus reshni Hort. ex Tan) and 'Sunki' (Citrus sunki Hort. ex Tan.), in hydroponic culture. The treatments were arranged in a randomized block design, with four replications. For all rootstocks, the relative growth rate in terms of plant total fresh matter increased under low and,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus sp.; Relative growth rate; Principal components; Nutrient solution.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000100006

Do soil fertilization and forest canopy foliage affect the growth and photosynthesis of Amazonian saplings?
Provedor de dados: 63
Autores: Magalhães,Nilvanda dos Santos; Marenco,Ricardo Antonio; Camargo,Miguel Angelo Branco.
Most Amazonian soils are highly weathered and poor in nutrients. Therefore, photosynthesis and plant growth should positively respond to the addition of mineral nutrients. Surprisingly, no study has been carried out in situ in the central Amazon to address this issue for juvenile trees. The objective of this study was to determine how photosynthetic rates and growth of tree saplings respond to the addition of mineral nutrients, to the variation in leaf area index of the forest canopy, and to changes in soil water content associated with rainfall seasonality. We assessed the effect of adding a slow-release fertilizer. We determined plant growth from 2010 to 2012 and gas exchange in the wet and dry season of 2012. Rainfall seasonality led to variations in...
Tipo: Info:eu-repo/semantics/article
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000100008

Effect of endomycorrhiza on growth and nutrient absorption ability of corn
Provedor de dados: 106
Autores: Omsub Nopamornbodi.
6 tables
Palavras-chave: Corn; Maize; Endomycorrhiza; Growth; Nutrient absorption; ข้าวโพด; เอนโดไมคอร์ไรซา; การเจริญเติบโต; การดูดซึมธาตุอาหาร.
Ano: 1979
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3983

การคัดเลือกและจำแนกชนิดไรโซแบคทีเรียส่งเสริมการเจริญเติบโตของข้าว
Provedor de dados: 106
Autores: Waraporn Panyoo; Wichai Kositratana; Sujin Patarapuwadol.
Rhizobacteria were isolated from root and rhizospheric soil of rice collected from rice paddy fields in Nakhon Pathom and Sukhothai provinces. One hundred and sixteen isolates were screened for plant growth promoting properties. Nitrogen fixation property determined based on PCR amplification using primer Salkowski’s reagent and quantified by spectrophotometer at 530 nm. Siderophore production and phosphate solubilization were tested by plating technique in chrome azurol S and Pikovskaya’s medium. Eighty-one percent of isolated rhizobacteria revealed plant growth promoting properties. Sixty percent of rhizobacteria had only one property and 21% of them had more than one of plant growth promoting properties. All of plant growth promoting rhizobacteria which...
Tipo: Collection
Palavras-chave: Rhizobacteria; Nitrogen fixation; Plant growth; PGPR; IAA; Siderophore; ข้าว; ไรโซแบคทีเรีย; การตรึงไนโตรเจน; สารเร่งการเจริญเติบโตของพืช; รากข้าว; สารไซเดอโรฟอร์; การละลายฟอสเฟต.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5416

Comparative studies among some soil management practices on growth and yield of corn
Provedor de dados: 106
Autores: Prasop Virakornphanich; Samnao Phetchawee.
Palavras-chave: Corn; Maize; Soil management; Fertilizers; Growth; Yields; ข้าวโพด; การจัดการดิน; อัตราการเจริญเติบโต; การเพาะปลูก.
Ano: 1981
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4060

Response of nitrogen and phosphorus on the growth of corn at Farm Suwan
Provedor de dados: 106
Autores: Dad, Chaudhry Allah.
1 table
Palavras-chave: Corn; Maize; Phosphorus fertilizers; Nitrogen fertilizers; Growth; Yields; Farm Suwan; ข้าวโพด; ปุ๋ยฟอสฟอรัส; ปุ๋ยไนโตรเจน.
Ano: 1971
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3780

Influences of soil properties and stem density on the growth and inner bark biomass of paper mulberry (Broussonetia papyrifera) in natural stands
Provedor de dados: 106
Autores: Tanasombat, M.; Sakurai, K.; Thammincha, S.; Thaiutsa, B.
Palavras-chave: Growth; Bark; Biomass; Paper; Mulberry.
Ano: 2005
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4976

Studies on the influences of nitrogen fertilizer on growth and yield of three irrigated sorghum varieties in dry season
Provedor de dados: 106
Autores: Unkasem, B.; Thawonmas, D.
1 table
Palavras-chave: Sorghum; Nitrogen fertilizers; Varieties; Growth; Yields; ข้าวฟ่าง; ปุ๋ยไนโตรเจน; การให้น้ำชลประทาน; การทดสอบผลผลิต.
Ano: 1976
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3867

ผลของการให้น้ำที่มีต่อการเจริญเติบโตและผลผลิตของต้นสตรอเบอรี่
Provedor de dados: 106
Autores: Chusak Sajjapongse.
Thesis (M.Sc. in Agriculture)
Tipo: PhysicalObject
Palavras-chave: Fragaria ananassa; Strawberries; Irrigation; Growth; Yield; สตรอเบอรี่; การให้น้ำ; การเจริญเติบโต; ผลผลิต; คุณภาพ.
Ano: 1985
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5500

Manipulation of growth of the Amazonian fish tambaqui, Colossoma macropomum (Characiformes: Serrasalmidae): analysis of physiological and zootechnical aspects
Provedor de dados: 36
Autores: PAZ,Arlan de Lima; VAL,Adalberto Luis.
ABSTRACT Colossoma macropomum, known locally as tambaqui, is the native fish most farmed in Brazil, however, technological advances are needed to reach efficient production rates. Modulating growth factors, such as growth hormone, may be associated with improved growth rate and feed efficiency. The use of exogenous hormone for fish rearing is prohibited in Brazil, yet the experimental use of bovine hormone can be useful in research aimed at understanding how to stimulate endogenous growth hormones in fish. Therefore, the present study had the strict objective of understanding the effects of growth hormone on the physiology and zootechnical parameters of C. macropomum under experimental conditions. The animals were intraperitoneally injected every fifteen...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture; Growth performance; Osmorregulation; Hematological parameters.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672018000300197

GROWTH PATTERN OF THE TROPICAL HIGHLAND GYMNOPTHALMID LIZARD Anadia bogotensis IN CAPTIVITY CONDITIONS
Provedor de dados: 37
Autores: CALDERÓN-ESPINOSA,Marta Lucia; RAMÍREZ,Angélica; JEREZ,Adriana.
ABSTRACT We estimated growth pattern and growth rate of individuals of Anadia bogotensis in captivity and under climatic conditions similar to those in the wild. We collected eggs of this species from communal nests from a highland locality in the municipality of La Calera, Cundinamarca, in Colombia. The eggs were incubated in outdoors terrariums, and the growth of the hatchlings was recorded until their death. The growth pattern fits a logistic model, in which individuals grow moderately at the beginning, and then their growth rate increases. The growth rate increases even after individuals reach sexual maturity and seems to decrease close to their maximum body size. It is a fast growing species that reaches sexual maturity at around 50 % of its maximum...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Andean highlands; Colombia; Gymnophthalmidae; Growth.
Ano: 2018
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2018000300307

Environmental controls of lucerne (Medicago sativa L.) growth across a climatic and edaphic gradient
Provedor de dados: 114
Autores: Druille,M.; Deregibus,V.; Garbulsky,M. F.
Lucerne is one of the most valuable forage species because of its high productivity and nutritional traits. However, the knowledge of spatio-temporal variability and environmental controls of its growth generated from the simultaneous study of several sites and throughout several years is extremely scarce. Five-year biomass data were analyzed from four rain fed sites located across a climatic and edaphic gradient in Argentina. The aims proposed were to characterize annual and seasonal lucerne growth, to analyze environmental controls of spatial and temporal growth, and to compare water use efficiency (WUE) among sites. Annual growth differed significantly among sites, ranging between 7,514 and 14,262 kg DM/ha. This range at the spatial scale was mainly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil properties; Water use efficiency; Forage production; Climate.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2017000200002

Exploring volume growth-density of mixed multiaged stands in northern Mexico
Provedor de dados: 115
Autores: Torres-Rojo,Juan M.
The volume growth-density relationship has been studied in even-aged forest stands. Few research reports have deepened in the analysis of such a relationship in mixed multiaged stands to include a wider variety of state variables and more than two species. The objective of this research was to analyze the combined effect of state variables, such as density, site quality, and species composition over volume growth of mixed multiaged forest stands. The analysis is based on a nested segmented model where each segment follows the logistic law of growth. Parameter estimates in each segment are computed by fitting long term data to a simultaneous equations system. Data were obtained from plots established during 1966 and 1968 in the Cielito Azul Experiment Area,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Volume growth prediction; Langsaeter's curve; Logistic model; Species mixture; Multiaged stands.
Ano: 2014
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952014000400009

Occurrence of annual growth rings in Rhizophora mangle in a region with low climate seasonality
Provedor de dados: 42
Autores: SOUZA,BRUNNA T.; ESTRADA,GUSTAVO C.D.; SOARES,MÁRIO L.G.; CALLADO,CÁTIA H.
ABSTRACT The formation of annual growth rings has been confirmed for several mangrove species in the last decade, among which is the Rhizophora mangle. However, the record of annual rings for this species was made in a region with high hydric seasonality, a widely recognized induction factor of annual rings in tropical species. In this sense, the present study aimed to verify the occurrence of annual growth rings in R. mangle in the mangroves of Guaratiba (Rio de Janeiro, Southeastern Brazil), a region with low hydric seasonality. For this purpose, the crossdating technique was applied in ten trees collected with known age (seven years). The growth rings are characterized by alternating layers of low vessel density (earlywood) and high vessel density...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth rings; Dendrochronology; Mangrove; Dendroecology; Proxy.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000200517

Stem density and growth of Attalea maripa and Astrocaryum aculeatum: implication for arborescent palms distribution across Amazonian forests
Provedor de dados: 49
Autores: Salm,Rodolfo.
This study examines aspects of the stem density and growth of two large arborescent palms Attalea maripa and Astrocaryum aculeatum and discusses their implication for the palm trees distribution in Amazonia. Stem density and growth were investigated through both laboratory measurements and field estimates of growth rates. The densities of stem samples collected within one individual of each studied species were very distinct. The samples of A. maripa stem were more homogeneous in density than those of A. aculeatum, both from the internal to the external, and from the lower to the upper parts of the stem. Field estimates of stem growth rates revealed that A. maripa growth is also more constant through development in height. Short A. aculeatum palms had...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonia; Astrocaryum aculeatum; Attalea maripa; Distribution; Palms; Stem density.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032004000100003

Stochastic modeling for a better approach of the in vitro observed growth of colon adenocarcinoma cells
Provedor de dados: 52
Autores: Ruiz-Gómez,Miguel J.; Ruiz-Gómez,Antonio; Martínez Morillo,Manuel.
The definition of a stochastic model that reflects the cell growth and the use of computer software could be very useful in modelling the cell behaviour due to the possibility to introduce alterations in biology parameters to obtain different growth patterns without the use of laboratory material. Human colon adenocarcinoma cells were cultured and a growth curve was made by daily count of the cell number. Pielou modelling was applied for stochastic simulation of deterministic growth, making stochastic the cell division, the death rates and the transition time between division and death, by using different probabilities. A greater growth was produced when the cell division rate increased, considering the density dependence constant. In contrast, a lower...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colon carcinoma; Cell growth; Stochastic; Deterministic; Simulation.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000300006

Comparison of radial growth rate of the mutualistic fungus of Atta sexdens rubropilosa forel in two culture media
Provedor de dados: 58
Autores: Miyashira,C.H; Tanigushi,D.G; Gugliotta,A.M; Santos,D.Y.A.C.
In vitro culture of the mutualistic fungus of leaf-cutting ants is troublesome due to its low growth rate, which leads to storage problems and contaminants accumulation. This paper aims at comparing the radial growth rate of the mutualistic fungus of Atta sexdens rubropilosa Forel in two different culture media (Pagnocca B and MEA LP). Although total MEA LP radial growth was greater all along the bioassay, no significant difference was detected between growth efficiencies of the two media. Previous evidences of low growth rate for this fungus were confirmed. Since these data cannot point greater efficiency of one culture medium over the other, MEA LP medium is indicated for in vitro studies with this mutualistic fungus due its simpler composition and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leaf-cutting ants; Mutualistic fungus growth; Mycelial growth; Leucoagaricus; Atta sexdens.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000200035

Validation of a predictive model describing growth of Salmonella in enteral feeds
Provedor de dados: 58
Autores: Silva,Roberta Ribeiro; Moraes,Célia Alencar; Bessan,Josefina; Vanetti,Maria Cristina Dantas.
The growth of Salmonella enterica subs. enterica sorovar Typhimurium at 25°C was monitored in industrialized and hospital formulated enteral feeds and the results were used to validate the mathematical model of Salmonella growth presented by the Pathogen Modeling Program (PMP) 7.0 (USDA-USA). The generation time of Salmonella in enteral feeds ranged from 21 to 34.8 min and, the maximum growth rate (µmax) varied from 1.28 to 1.95 h-1, resulting in a population increase from 5 to 6 log10 cycles within 14 to 24 h incubation. Growth was faster in the hospital formulated feed containing vegetables and eggs. The growth kinetic's parameters as lag phase; µmax and maximum population density (MPD) were similar to those predicted by the PMP 7.0, with exception of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Predictive microbiology; Salmonella growth; Enteral diets.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000100026

Effect of plant growth-promoting bacteria on the growth and fructan production of Agave americana L.
Provedor de dados: 58
Autores: De La Torre-Ruiz,Neyser; Ruiz-Valdiviezo,Víctor Manuel; Rincón-Molina,Clara Ivette; Rodríguez-Mendiola,Martha; Arias-Castro,Carlos; Gutiérrez-Miceli,Federico Antonio; Palomeque-Dominguez,Héctor; Rincón-Rosales,Reiner.
ABSTRACT The effect of plant growth-promoting bacteria inoculation on plant growth and the sugar content in Agave americana was assessed. The bacterial strains ACO-34A, ACO-40, and ACO-140, isolated from the A. americana rhizosphere, were selected for this study to evaluate their phenotypic and genotypic characteristics. The three bacterial strains were evaluated via plant inoculation assays, and Azospirillum brasilense Cd served as a control strain. Phylogenetic analysis based on the 16S rRNA gene showed that strains ACO-34A, ACO-40 and ACO-140 were Rhizobium daejeonense, Acinetobacter calcoaceticus and Pseudomonas mosselii, respectively. All of the strains were able to synthesize indole-3-acetic acid (IAA), solubilize phosphate, and had nitrogenase...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agave; Inoculation; Bacteria; Inulin; 16S rRNA.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000300587

Relationship between Root Growth of &amp;#39;Thompson Seedless&amp;#39; Grapevines and Soil Temperature
Provedor de dados: 117
Autores: Callejas R,Rodrigo; Canales P,Pablo; García de Cortázar G. de C,Víctor.
With the purpose of characterizing the growth of the root system of table grapes (Vitis vinifera L.) cv. Thompson Seedless and its relationship with soil temperature, research was carried out during the 2004-2005 growing season in vineyards in the Copiapó and Huasco Valleys. Four plants were chosen and rhizotrons were used to measure the growth of the root system. Measurements were performed once a week from September 2004 to September 2005, estimating the intensity of root growth and its annual distribution in the ranges of 0 to 40, 40 to 80 and 80 to 120 cm of soil depth. Temperature sensors were installed in four plants at 25, 50, 75 and 100 cm of soil depth, and the temperature was registered every 1 h. The thermal diffusivity of the soil was...
Tipo: Journal article
Palavras-chave: Roots; Thermal diffusivity; Tablegrape.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000400003

The impact of agriculture trade and exchange rate on economic growth of Pakistan: an NARDL and asymmetric analysis approach
Provedor de dados: 65
Autores: Ali,Imad; Khan,Imran; Ali,Hashmat; Baz,Khan; Zhang,Qiangqiang; Khan,Ajab; Huo,Xuexi.
ABSTRACT: This study contributes to the extant literature on the nexus among agriculture export, import exchange rate and economic growth in Pakistan. We used annual time series data for 1980-2017 and employ the Non-linear Autoregressive Distributed Lag (NARDL) model. The NARDL testing results affirms asymmetric co-integration among the variables. The study main results show: (i) Co-integration test for long run the positive shocks in export and import have positive significant while exchange rate has positive effect the economic growth. (ii) Co-integration test for short run the positive shocks in import has positive significant and while Export and exchange rate have negative significant effect on economic growth. The symmetrical results show: (i) Export...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Economic growth; Agricultural export products; Agricultural import products and exchange rate; NARDL; Asymmetric relationship; Pakistan.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000400931

Plant growth and seed quality of bean seeds under soil waterlogging
Provedor de dados: 22
Autores: Pedó, Tiago; Martinazzo, Emanuela Garbin; Aisenberg, Geison Rodrigo; Aumonde, Tiago Zanata; Villela, Francisco Amaral; Antunes, Irajá Ferreira.
The growth of plant species can be affected by waterlogging. This process occurs as result of physiological changes that occur at the plants. The study aimed to comparatively evaluate the growth and expression of seed vigor of common bean genotypes subjected to soil waterlogging. For each of the genotypes IPR Tuiuiú and Carioca, treatments consisted of combining soil waterlogging for 12 hours or kept at field capacity, and plant sample collection times. Plant samples were collected at every 20 day intervals, being determined dry mass, leaf area and seed vigor. The plants of genotype IPR Tuiuiú showed higher growth and similar expression of seed vigor under soil field capacity. In plants of genotype Carioca, soil waterlogging did not affect growth and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leaf area; Dry mass; Phaseolus vulgaris; Vigor.
Ano: 2017
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/13974

Revisiting the Environmental and Socioeconomic Effects of Population Growth: a Fundamental but Fading Issue in Modern Scientific, Public, and Political Circles
Provedor de dados: 7
Autores: Mora, Camilo; Department of Geography, University of Hawaii; cmora@hawaii.edu.
Reversing ongoing declines in human welfare and biodiversity is at the core of human development. Although numerous institutions and avenues are in place to reverse such trends, there seems to be limited consideration of population growth as an ultimate driver. I review recent studies showing how the issue of population growth has been downplayed and trivialized among scientific fields, which may in part account for the reduced public interest in the issue and in turn the limited will for policy action. Different sources of evidence suggest that population growth could fundamentally affect society, nature, and the climate. Although tackling the issue of overpopulation will suffer from major impediments including scientific motivation, public scientific...
Tipo: Peer-Reviewed Synthesis
Palavras-chave: Biodiversity loss; Climate change; Debt; Employment; Population growth; Public outreach.
Ano: 2014

Spirulina platensis growth estimation by pH determination at different cultivations conditions
Provedor de dados: 69
Autores: Pelizer,Lúcia Helena; Carvalho,J.C.M.; Sato,Sunao; de Oliveira Moraes,Iracema.
Spirulina platensis is a cyanobacterium that has a high protein content and therefore, a high nutritional value. It can be cultivated either in a liquid or in a solid culture. When cultivated in aqueous culture the cell growth can be determined by following the optical density. On the other hand, when produced by solid cultivation the growth can be determined only indirectly, such as, through determination of the protein content of the fermenting solids. In this work the possibility of estimating cell growth by pH determination was verified. From the results it was concluded that pH and protein production (solid or surface culture) or cell content (liquid culture) correlate well, therefore pH determination seems to be a good method to determine cell growth.
Tipo: Journal article
Ano: 2002
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582002000300009

In vitro biocontrol activity of Trichoderma harzianum on Alternaria alternata in the presence of growth regulators
Provedor de dados: 69
Autores: Roco,Angela; Pérez,Luz María.
The in vitro biocontrol ability of Trichoderma harzianum on the phytopathogen Alternaria alternata improved in the presence of the growth regulators gibberellic acid (GA3), or indolacetic acid (IAA) or benzylaminopurine (BAP) or foliar nutrient at concentrations similar or higher than those used at the field level. These plant hormones decreased the secretion of endopolygalacturonase (endo-PG) of A. alternata by approximately 20%, did not modify endochitinase (endo-CH) secretion of T. harzianum and did not alter germination of conidia or mycelia growth of any of these fungi. The presence of T. harzianum decreased endo-PGase secretion of A. alternata by about 50%. This inhibitory effect was independent of the presence of growth regulators. The level of...
Tipo: Journal article
Ano: 2001
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582001000200006

Особенности  соматического  и генеративного  роста  у некоторых цветовых морф мидии Mytilus galloprovincialis Lam.
Provedor de dados: 13
Autores: Щербань, С. А.
Исследованы особенности  соматического и  генеративного  роста у черноморского полиморфного  моллюска  Mytilus galloprovincialis  Lam. Дана  сравнительная оценка  таких показателей, как содержание белка, суммарных РНК, ДНК и индекса РНК/ДНК, характеризующих "мгновенную" скорость  роста  моллюсков.  Показано  наличие различий в  соматическом  и генеративном росте мидий трех цветовых морф;  в частности, мидиям черной морфы (фенотипа) свойственна наиболее выраженная "мгновенная" скорость роста.
Tipo: Journal Contribution
Ano: 2000
URL: http://repository.ibss.org.ua/dspace/handle/99011/1107

Особенности белкового роста и жиронакопления у черноморских рыб
Provedor de dados: 13
Autores: Шульман Г. Е.; Кокоз Л. М.
The protein growth and fat accumulation in different species and intraspecies groups of Black sea fishes were investigated. There were revealed some quantity characteristics of processes studied which are connected with biological features of these fishes. For characteristic of the processes under investigation the "mean run curves" (monotonously increasing functions) are to be drawn and the variation of quantities of protein and fat (connected with seasonal physiological rhythms) around these "mean run curves" are to be studied. It is shown that the character of "mean run curves" of protein growth depends on the fish life-span. Proportional value of variational processes in protein metabolism in fishes decreases with the age, and progressive processes...
Tipo: Journal Contribution
Ano: 1968
URL: http://10.0.0.194:8080/dspace/handle/99011/3032

Agriculture productivity growth in Brazil: recent trends and future prospects.
Provedor de dados: 14
Autores: ARIAS, D.; VIEIRA JUNIOR, P. A.; CONTINI, E.; FARINELLI, B.; MORRIS, M.
Section 1. Introduction and motivation; Section 2: Evolution and sources of agriculture productivity growth; Section 3: Use of factors of agriculture production; Section 4: Is Brazil maximizing agriculture growth opportunities? Section 5: Concsuions and policy recommendatos.
Tipo: Livro técnico (INFOTECA-E)
Palavras-chave: Agriculture; Foods.
Ano: 2017
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1119022

Cinétique du recrutement et croissance des juvéniles d'Owenia fusiformis Delle Chiaje en baie de Seine (Manche orientale)
Provedor de dados: 5
Autores: Dauvin, Jc.
The dynamics and growth of Owenia fusiformis juveniles were studied over a period of three months under different edaphic conditions in the eastern part of the Bay of Seine. Post-larval settlement was synchronous and showed the same high densities in different communities with or without adult populations. There was a rapid disappearance at the juvenile stage in the unfavourable bottoms. The distribution of the juveniles was gregarious. Growth was slow during the first month ; it was also highly variable. Growth differences were observed between stations: growth was higher in the station located just seaward of the Seine estuary. The relationships between edaphism, recruitment and growth of juveniles are discussed in relation to the changes in space and...
Tipo: Text
Palavras-chave: OWENIA-FUSIFORMIS; ANNELIDA-POLYCHAETA; SETTLING; BAY OF SEINE.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/00100/21152/18771.pdf

Some aspects of the distribution, metamorphosis and growth in Serrivomer parabeani Bertin, 1940 (Pisces, Apodes, Serrivomeridae) related to growth features in their otoliths
Provedor de dados: 16
Autores: Utrecht, W.L. van.
Metamorphosis and growth of Serrivomer parabeani Bertin, 1940, are analysed, in relation to growth features in their otoliths. The animals were caught during the spring expedition in the Mid North Atlantic in 1980. It proved that the actual metamorphosis from leptocephalus to eel-like animal is of short duration. Growth in length and the development of the pigmentation is relatively slow. The animals from this series of samples do not show vertical migration. They are mainly restricted to water layers with temperatures between 8° and 12° C and depths between 450 and 1000 m, except at station 24, at the western side of the Great Meteor Bank, where some animals were caught at depths between 110 and 300 m, during the night.
Tipo: Article / Letter to the editor
Ano: 1982
URL: http://www.repository.naturalis.nl/record/505043

Water soluble carbon nanotubes affect growth of the common gram (Cicer arietinum)
Provedor de dados: 17
Autores: Shweta Tripathi; Sumit Kumar Sonkar; Abhishek Kumar; M.Y. Khan; Sabyasachi  Sarkar.
Multi-walled Carbon nanotube, its role and implications in biological systems are currently under evaluation and became interesting for many researchers primarily working on the interface of chemistry, physics and biology.  However, concerns about the potential toxicity of multi-walled carbon nanotubes have been raised. To carry such affords, herein we investigate the effects of carboxylic acid functionalized water soluble carbon nanotube (wsCNT) on the growth of gram Cicer arietinum plant. The growth of gram plants was observed with and without the presence of wsCNT to demonstrate that carboxylated functionalized multi-walled carbon nanotubes showed better growth and under more wsCNT, the growth was enhanced without showing apparent toxicity. Although...
Tipo: Manuscript
Palavras-chave: Chemistry; Plant Biology.
Ano: 2009
URL: http://precedings.nature.com/documents/4056/version/1

Using body length measurements to study larval growth: a lepidopteran example
Provedor de dados: 82
Autores: COSTA,FELIPE A.P.L.; GOMES-FILHO,ARLINDO.
This work utilizes data for caterpillars of the Neotropical butterfly Hypothyris ninonia daeta (Bdv.) (Nymphalidae: Ithomiinae) to demonstrate that body length measurements can be used as an accurate index of weight in larval growth studies. It also determines analytically the time interval that must be maintained between consecutive measurements in order to keep within acceptable levels the chances of overlap in estimates (i.e., the chances that caterpillars of different lengths have the same weight). These results show that studying the growth of immature insects is not necessarily an exclusive laboratory enterprise. This approach may be particularly useful to estimate immature growth rate in the field, when more accurate measures are not possible or...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Butterfly; Caterpillar growth; Hypothyris; Ithomiinae; Length-weight relationship.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2002000200002

Growth of Argentine silverside (Odontesthes bonariensis) stocked at low densities in two oligohaline shallow lakes (Buenos Aires province, Argentina)
Provedor de dados: 20
Autores: Espinach Ros, A.; Dománico, A.
Argentine silversides (Odontesthes bonariensis) stocked as fry (45 days old) at low densities in two oligohaline Pampasic shallow lakes (Buenos Aires province, Argentina) grew to legal harvest size (250 mm, total length) in one year, and averaged 403 mm in length and 500 g in weight after 25 months.
Tipo: Journal Contribution
Palavras-chave: Fish culture; Growth; Growth; Shallow water; Oligotrophic lakes; Fish culture; Growth; Growth; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_3394.
Ano: 2006
URL: http://hdl.handle.net/1834/2513

Preliminary results of the influence of organic matters on the growth of &lt;i&gt;Prorocentrum lima&lt;/i&gt;
Provedor de dados: 27
Autores: Sohet, K.; Schoemann, V.; Houvenaghel, G.
The growth of &lt;i&gt;Prorocentrum lima&lt;/i&gt;, a toxic algae producing okadaic acid, has been followed in culture media with a variety of organic enrichments obtained from soils and composts of different origins. Two strains were studied and did not respond in the same way to the enrichments. Each strain also responds differently to each type of enrichment. Compost extracts, rich in organic matters, induce faster growth (growth rate 0.07/day) than extracts of soils poor in organic matter (growth rate 0.016/day). Such findings may contribute to explain the mechanisms inducing or triggering bloom developments which occur in neritic and coastal waters where terrigenous run-off mostly influences the organic content of seawater.
Tipo: Info:eu-repo/semantics/article
Ano: 1991
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2895

FruitGrowth - Novel organic solutions securing future growth
Provedor de dados: 21
Autores: Williams, Michelle.
Currently the Danish organic fruit and berry production area is 502 ha with the main crop being apples at 282 ha. FruitGrowth will address the main barriers identified by the "workin Group report 2009", by focusing on robust cultivars in apples, new innovative weeding methods and extending the fruit season and thereby product availability for consumers we will introduce new cultivars and technologies in storage. We work on short and long time solutions of the key pests and diseases, natural beneficial´s in flower strips and natural compound to control key pest.
Tipo: Conference paper, poster, etc.
Palavras-chave: Food security; Food quality and human health Fruit and berries Breeding; Genetics and propagation Crop health; Quality; Protection Weed management Post harvest management and techniques.
Ano: 2011
URL: http://orgprints.org/20012/4/20012.pdf

Effects of the inoculation with arbuscular mycorrhizal (AM) fungus of the genus Glomus on growth and leaf mineral concentrations of grapevine (Vitis vinifera cv. Cabernet Sauvignon)
Provedor de dados: 21
Autores: von Bennewitz Alvarez, Eduardo.
The effects of root inoculation with mycorrhizal fungi (genus Glomus) on growth and leaf mineral concentrations of grapevine (Vitis vinifera cv. Cabernet Sauvignon) were studied under the growth conditions of Central Chile. Inoculation enhanced the uptake of N and K and vegetative growth but decreased the foliar concentration, but not necessarily the uptake of P.
Tipo: Conference paper, poster, etc.
Palavras-chave: Viticulture.
Ano: 2007
URL: http://orgprints.org/9801/1/bennewitz%2D2007%2Dgrapevine.pdf

HealthyGrowth: Wie können Öko-Wertschöpfungsketten wachsen, ohne ihre Höherwertigkeit zu verlieren? BÖLN-Merkblatt
Provedor de dados: 21
Autores: Münchhausen, von, Susanne; Häring, Anna Maria.
Im Rahmen des europäischen CoreOrganicII Projektes HealthyGrowth erarbeitete das HNEE-Team die Empfehlungen für Politik und Praxis. Diese beruhen auf den Fallstudien und vergleichenden Auswertungen aller Projektpartner. Das Dokument ist das BÖLN-Merkblatt zum Projektabschluss.
Tipo: Other
Palavras-chave: Farm economics Markets and trade Education; Extension and communication Produce chain management.
Ano: 2016
URL: http://orgprints.org/30875/1/Merkblatt_B%C3%96LN-HealthyGrowth.pdf

Simulating root growth
Provedor de dados: 21
Autores: Pedersen, Anders; Thorup-Kristensen, Kristian; Kristensen, Hanne Lakkenborg; Berntsen, Jørgen.
Dynamic plant/soil models are used to predict crop production, N dynamics and nitrate leaching loss of different cropping systems. To do this, the models simulate various aspects of plant biology, soil biology and soil physics. Correct simulation of root growth is critical for the simulation of nitrate leaching losses. Measurements have been made on crop root growth on two soil types, and the data used to improve the simulation of root growth within the FASSET model. The paper presents the results from root measurements on winter wheat, spring barley and sugar beets, and the root modelling approach we have developed.
Tipo: Journal paper
Palavras-chave: Soil biology.
Ano: 2004
URL: http://orgprints.org/3879/1/3879.rtf

Root pruning reduces root competition and increases crop growth in a living mulch cropping system
Provedor de dados: 21
Autores: Båth, B.; Kristensen, H.L.; Thorup-Kristensen, K.
Living mulch systems may decrease pest attacks. However, the below-ground competition from the living mulch may decrease the growth of the cash crop. Here growth of white cabbage in living mulch systems and in pure stands was compared. Root pruning of the living mulch increased the above-ground biomass of white cabbage, with two prunings giving higher cabbage yields than one. Below-ground growth and competition were examined by measuring root distribution in minirhizotrons and uptake of 15N placed at different soil depths. These studies showed that the ability of mulch species to compete for resources at depth was restricted by pruning.
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop combinations and interactions.
Ano: 2009
URL: http://orgprints.org/19583/3/19583.pdf

HealthyGrowth: Wie können Öko-Wertschöpfungsketten wachsen, ohne ihre Höherwertigkeit zu verlieren? Einführungsvortrag zum Obstbau-Workshop im Obstbauzentrum Jork
Provedor de dados: 21
Autores: Münchhausen, von, Susanne.
Growth of values-based food chains holds particular challenges, chances and risks. The objective of this presentation was to show results of the HealthyGrowth project. The workshop was organised by the fruit growing center Esteburg and grouped growers in the area of Hamburg who intent to change from conventionel fruit growing to organic systems.
Tipo: Conference paper, poster, etc.
Palavras-chave: Markets and trade; Fruit and berries; Produce chain management; Knowledge management.
Ano: 2017
URL: http://orgprints.org/31391/2/2017-Jork-HG-Vortrag.pdf

Einfluß der Sorte und Bestandesdichte auf Ertrag und Unkrautbesatz bei Futtererbsen
Provedor de dados: 21
Autores: Elers, Barbara.
Experiments with peas had been conducted during two years. Four varieties with four plant densities had been tested with respect to yield and weed growth. Conclusions are that the recommended plant density of 80 kernels/sqm is sufficient for yield and less weed-growth. For weed growth the choosen variety is more important than the plant density. Stability till harvest is the most important characteristic of variety for reducing weed growth.
Tipo: Conference paper, poster, etc.
Palavras-chave: Weed management Cereals; Pulses and oilseeds.
Ano: 2001
URL: http://orgprints.org/2201/1/2201%2Delers%2D2001%2Derbse%2Dm%C3%BCnchen.pdf

HealthyGrowth: Wie können Öko-Wertschöpfungsketten wachsen, ohne ihre Höherwertigkeit zu verlieren?
Provedor de dados: 21
Autores: Münchhausen, von, Susanne; Haering, Anna Maria.
Growth of values-based food chains holds particular challenges. The objective of this paper is the presentation of preliminary results of the HealthyGrowth project.
Tipo: Conference paper, poster, etc.
Palavras-chave: Markets and trade; Produce chain management; Germany.
Ano: 2016
URL: http://orgprints.org/30474/1/2016_5-Z%C3%96L-Vortrag.pdf

Promotion of growth and control of damping-off (Rhizoctonia solani) of greenhouse tomatoes amended with vermicompost
Provedor de dados: 85
Autores: Rivera,MC; Wright,ER; López,MV; Garda,D; Barragué,MY.
The pathogen Rhizoctonia solani (teleomorph Tanatephorus cucumeris) can affect tomatoes germination and emergence and cause basal rot of seedlings. It is generally accepted that composts suppress plant diseases, improve soil nutrient availability and stimulate plant growth. However, no reports have been found on the simultaneous evaluation of vermicompost as plant growth promoter and suppressive to damping-off caused by R. solani on tomatoes. This research evaluated the suppressive effects of different concentrations of vermicompost against R. solani and the ability of vermicompost to promote tomato seedlings growth. The microbial composition of the substratum was explored. Thirty six microorganisms were isolated, 13 of which were antagonic to R.solani in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antagonism; Bacteria; Biological control; Disease incidence; Fungi.
Ano: 2004
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572004000100028

Endogenous Discounting and Climate Policy
Provedor de dados: 31
Autores: Tsur,   Yacov; Zemel,   Amos.
Under risk of abrupt climate change, the occurrence hazard is added to the social discount rate. As a result, the social discount rate (i) increases and (ii) turns endogenous to the global warming policy. The second effect bears profound policy implications that are magnified by economic growth. In particular, we find that greenhouse gases (GHG) emission should be terminated at a finite time so that the ensuing occurrence risk will vanish in the long run. Due to the public bad nature of the catastrophic risk, the second effect is ignored in a competitive allocation and unregulated economic growth will give rise to excessive emissions. In fact, the GHG emission paths under the optimal and competitive growth regimes lie at the extreme ends of the range of...
Tipo: Working or Discussion Paper
Palavras-chave: Abrupt climate change; Hazard rate; Discounting; Economic growth; Emission policy; H23; H41; O13; O40; Q54; Q58.
Ano: 2008
URL: http://purl.umn.edu/37944

Potential Impacts of a Green Revolution in Africa – the Case of Ghana
Provedor de dados: 31
Autores: Breisinger,   Clemens; Diao,   Xinshen; Thurlow,   James; Al-Hassan,   Ramatu M.
Agricultural growth in Africa has accelerated, yet most of this growth has been driven by land expansion. Land expansion potential is reaching its limits, urging governments to shift towards a green revolution type of productivity-led growth. Given the huge public investments required, this paper aims to assess the potential impacts of a green revolution. Results from a CGE model for Ghana show that green revolution type growth is strongly pro-poor and provides substantial transfers to the rest of the economy, thus providing a powerful argument to raise public expenditure on agriculture to make a green revolution happen in Africa.
Tipo: Conference Paper or Presentation
Palavras-chave: Agriculture; Green Revolution; Growth; Poverty; Africa; Ghana; CGE; Agricultural and Food Policy; International Development; D58; O13; O55.
Ano: 2009
URL: http://purl.umn.edu/51086

Institutions and Economic Growth: Empirical Evidence for a Cross-National Analysis
Provedor de dados: 31
Autores: Vijayaraghavan,   Maya; Ward,   William A.
The relationship between institutional infrastructure and economic growth rates across 43 nations between the years 1975-90 is examined. Within the framework of the neoclassical growth model, this study integrates a broad set of institutional variables which together proxy for the overall institutional infrastructure of an economy. Security of property rights, governance, political freedom and size of government are the indicators used in the study, facilitating identification of the most important institutions that account for the observed variations in economic growth rates among nations. Results indicate that security of property rights and size of government are the most significant institutions that explain the variations in economic growth rates.
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 2001
URL: http://purl.umn.edu/112952

Local Employment Growth, Migration, and Public Land Policy: Evidence from the Northwest Forest Plan
Provedor de dados: 31
Autores: Eichman,   Henry; Hunt,   Gary L.; Kerkvliet,   Joe; Plantinga,   Andrew J.
Debates over protecting public land reveal two views. Some argue protection reduces commodity production, reducing local employment and increasing out-migration. Others contend protection produces amenities that support job growth and attract migrants. We test these competing views for the Northwest Forest Plan (NWFP), which reallocated 11 million acres of federal land from timber production to protecting old-growth forest species. We find evidence that land protection directly reduced local employment growth and increased net migration. The total negative effect on employment was offset only slightly by positive migration-driven effects. Employment losses were concentrated in metropolitan counties, but percentage losses were higher in rural counties.
Tipo: Journal Article
Palavras-chave: Amenities; Employment growth; Migration; Northwest Forest Plan; Oldgrowth forests; Public land management; Community/Rural/Urban Development; Land Economics/Use.
Ano: 2010
URL: http://purl.umn.edu/93222

Decomposition of Total Factor Productivity Change in the U.S. Hog Industry
Provedor de dados: 31
Autores: Key,   Nigel D.; McBride,   William D.; Mosheim,   Roberto.
The U.S. hog industry has experienced dramatic structural changes and rapid increases in farm productivity. A stochastic frontier analysis is used to measure hog enterprise total factor productivity (TFP) growth between 1992 and 2004 and to decompose this growth into technical change and changes in technical efficiency, scale efficiency, and allocative efficiency. Productivity gains over the 12-year period are found to be explained almost entirely by technical progress and by improvements in scale efficiency. Differences in TFP growth rates in the Southeast and Heartland regions were found to be explained primarily by differences in farm size growth rates.
Tipo: Journal Article
Palavras-chave: Hog production; Scale efficiency; Stochastic frontier; Technical change; Total factor productivity growth; Livestock Production/Industries; Production Economics; D24; Q12.
Ano: 2008
URL: http://purl.umn.edu/45512

Democracy, rent seeking, and growth: Is there a U curve?
Provedor de dados: 31
Autores: Mohtadi,   Hamid; Roe,   Terry L.
A simple two-sector endogenous growth model of government spending and growth is developed with a producing and a lobbying sector.  Lobbyists divert government spending for private gains.  One key innovation is this: With democratization, information (and power) becomes more diffused (public), allowing more lobbyists to lobby but reducing gains per lobbyist.  Thus, aggregate rents rise with the number of lobbyists but fall with increasing competition among them.  This simple mechanism produces a "U" curve in which growth falls with early democratization but rises later, and a related "inverted U" curve in which rents rise with early democratization but fall later.  Extensive empirical test of the interrelationship between growth, government spending,...
Tipo: Working or Discussion Paper
Palavras-chave: International Development; Political Economy.
Ano: 1997
URL: http://purl.umn.edu/7485

SECURITY IS LIKE OXYGEN: EVIDENCE FROM UGANDA
Provedor de dados: 31
Autores: Zhang,   Xiaobo.
Since the early 1990s, Uganda has been one of Africa’s fastest growing countries. However, at the sub-national level, growth has been uneven due to civil conflict in the northern region. Using a panel of household and community level data, this paper examines the links between security and economic growth. It is found that security is a pre-condition for successful economic development and that there is in fact a threshold level of security below which public investments in infrastructure and education have little impact on growth. Only when security exceeds this threshold do public investments stimulate economic growth. Economists and policy advisors living in peaceful countries often prescribe economic policies that hinge on the assumption of good...
Tipo: Working or Discussion Paper
Palavras-chave: Security; Civil Strife; Growth; Poverty; Uganda; Africa; International Development; Political Economy.
Ano: 2004
URL: http://purl.umn.edu/16172

Structure and Trends of Rural Employment: Canada in the Context of OECD Countries
Provedor de dados: 31
Autores: Cunningham,   Ron; Bollman,   Ray D.
In 1991, 33 percent of Canada's population lived in predominantly rural regions. Employment growth in rural regions averaged 1.3 percent per year over the 1980s, ranking fourth among OECD countries. In 1991, only 11 percent of the rural workforce in Canada were working in agriculture, forestry or fishing.  Within rural regions, employment growth was highest in rural areas adjacent to metropolitan centres. Business services was the fastest growing sector in all types of regions, but rural regions received only a minor boost due to the relatively low share of their workforce in business services. On average, rural areas showed less growth - however, within rural areas, there were regions that showed more growth than urban regions. Rurality does not...
Tipo: Working or Discussion Paper
Palavras-chave: Community/Rural/Urban Development; Labor and Human Capital.
Ano: 1996
URL: http://purl.umn.edu/28049

Some Characteristics of Pro-poor Growth, and Policy Implications for Mozambique
Provedor de dados: 31
Autores: Tschirley,   David L.
Resultados das investigações do Departamento de Análise de Políticas MADER-Direcção de Economía
Tipo: Report
Palavras-chave: Food security; Food policy; Mozambique; Pro-poor growth; Poverty reduction; Agricultural and Food Policy; Food Security and Poverty; Q18.
Ano: 2002
URL: http://purl.umn.edu/55227

The Implications of an Export Tax on Sectoral Growth: A Case in Pakistan
Provedor de dados: 31
Autores: Hudson,   Darren; Ethridge,   Don E.
The implications of and export tax on sectoral economic growth in the cotton and yarn sectors in Pakistan are examined. Pakistan utilized an export tax on raw cotton fiber from 1988-1995 in order to lower input cost to domestic yarn spinners. The growth effects are simulated based on the results of a structural econometric model. Simulation results show that the export tax had a significant adverse impact on growth in the raw fiber sector. The lower input cost as a result of the tax, however, did not appear to stimulate growth in the yarn sector over what would have occurred without the policy.
Tipo: Report
Palavras-chave: Agricultural and Food Policy.
Ano: 1998
URL: http://purl.umn.edu/53164

Measuring the Sustainability of the UK Food Chain
Provedor de dados: 31
Autores: Barnes,   Andrew Peter; McVittie,   Alistair.
Recent policy interest has been directed at the sustainability of food industries, in particular the post-farm gate food chain. This comprises of manufacturing, wholesaling, retailing and catering. In order to measure sustainability Byerlee and Murgai (2001) have argued that productivity measures, alongside key indicators of resource quality trends, should be used to indicate sustainable growth. This paper adopts this approach by presenting Fisher indexes of both Total Factor Productivity (TFP) index and for prominent externalities emerging from the food chain over the period 1998 to 2002. TFP shows an average annual growth rate of –0.52% per annum. Input growth, in particular intermediate purchases, has outstripped output growth over the entirety of this...
Tipo: Working or Discussion Paper
Palavras-chave: Total Factor Productivity; Externalities; Sustainable Growth; Agribusiness.
Ano: 2006
URL: http://purl.umn.edu/46003

SURVIVAL AND GROWTH OF FAMILY FARMS IN ISRAEL: 1971-1995
Provedor de dados: 31
Autores: Dolev,   Yuval; Kimhi,   Ayal.
We analyze the growth of family farms in Israeli cooperative villages between 1981 and 1995, using longitudinal data. We use instrumental variable techniques to account for the endogeneity of initial farm size, and correct for selectivity due to farm survival. Both endegeneity and sample selection are found important in this case. We find that smaller farms grow faster, so that there is convergence of farm sizes at the bottom end of the size distribution. There is weak evidence that this convergence process slows down at the upper part of the size distribution. We also find a positive effect of farm specialization on growth, indicating the possibility of scale economies. Farm capital stock affects farm survival but not growth itself, once accounting for...
Tipo: Working or Discussion Paper
Palavras-chave: Farm Management.
Ano: 2006
URL: http://purl.umn.edu/7146

Relationship between the industrial structure and economic growth of Guangdong Province
Provedor de dados: 31
Autores: Li,   Qian; Li,   Hong-yun.
We quantitatively analyze the relationship between the industrial structure and economic growth in Guangdong Province of China from 1980 to 2006 by impulse response function and variance decomposition on the basis of the establishment of VAR model. Result shows that there is a long-term, stable and balanced relationship between the industrial structure and the actual economic growth in Guangdong Province with a reverse amendment mechanism. The industrial structure has a significant influence on the economic growth of Guangdong Province, but there is a certain lag phase of this influence. Economic growth has dependence on the industrial structure, which is showed by the structure of production value.
Tipo: Thesis or Dissertation
Palavras-chave: Industrial structure; VAR model; Impulse response function; China; Community/Rural/Urban Development; Financial Economics; Industrial Organization; Production Economics; Research Methods/ Statistical Methods.
Ano: 2009
URL: http://purl.umn.edu/53484

Time-separable Utility, Leisure and Human Capital Accumulation: What New Implications for the Environment-Growth Nexus?
Provedor de dados: 31
Autores: Pautrel,   Xavier.
Using a time-separable utility function where leisure is introduced through the disutility of working time and is adjusted for quality, as measured by human capital to capture home production, we demonstrate that the environmental policy is harmful for growth. A tighter environmental tax reduces the incentives to educate by increasing leisure time and lowers the steady-state growth rate and lifetime welfare, whatever the source of pollution. We also demonstrate that the intertemporal elasticity of substitution in labor supply plays a crucial role in the marginal impact of the environmental tax on growth and welfare. When the positive influence of human capital is added into preferences (by explicitly modelling the home production sector), we find that the...
Tipo: Working or Discussion Paper
Palavras-chave: Leisure; Human Capital; Environmental Tax; Labor and Human Capital; C; Q56.
Ano: 2009
URL: http://purl.umn.edu/55331

NATURAL RESOURCE ABUNDANCE AND ECONOMIC GROWTH
Provedor de dados: 31
Autores: Ding,   Ning; Field,   Barry C.
This paper explores whether natural resource abundance leads, other things equal, to slower growth rates.  We distinguish between natural resource dependence (RD) and the natural resource endowment (RE).  We estimate three models, using World Bank data on national capital stocks.  In a one-equation model we show that RD has a negative effect on growth rates, apparently confirming the main results of the resource "curse" literature.  RE, however, has a positive impact on growth.  We then estimate a two-equation model, in which the impacts of RE are much weaker.  Finally, we estimate a three-equation model, in which the impacts of natural resources on growth disappears.
Tipo: Working or Discussion Paper
Palavras-chave: International Development; Resource /Energy Economics and Policy.
Ano: 2004
URL: http://purl.umn.edu/14531

MONETARY INSTABILITY AND ECONOMIC GROWTH
Provedor de dados: 31
Autores: Peterson,   Willis L.
Favorable conditions existed for world economic growth during the 1980s and early 1990s.  Yet real GDP growth rates for 76 out of 87 countries included in this study decreased during this time, relative to the 1968-80 period.  The middle income countries experienced the greatest decline in growth rates, followed by the low income group.  Theory and evidence suggest that an increase in the instability of the growth rate of the money supply, largest in the middle income countries and next largest in the low income nations, contributed to this decline.
Tipo: Working or Discussion Paper
Palavras-chave: Financial Economics; International Development.
Ano: 1998
URL: http://purl.umn.edu/12980

Transition, development and the supply of wheat in China
Provedor de dados: 31
Autores: Rozelle,   Scott; Huang,   Jikun.
The overall goal of this article is to better understand the factors that influence China’s wheat supply. We assess trends in China’s wheat output and develop a framework to measure the relationship between output and key determinants of China’s wheat sector growth. Elasticity estimates and factor growth trends help decompose the growth of reform‐era wheat supply into its component parts. The results show that growth in the early reform period was due to institutional change and technology. In the late reform period, however, with the returns to institutional change exhausted, all of China’s growth in wheat supply was due to technology, a result that implies China’s government should invest heavily in agricultural research and development.
Tipo: Journal Article
Palavras-chave: Crop Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/117852

Wages and Employment Growth: Disaggregated Evidence for West Germany
Provedor de dados: 31
Autores: Suedekum,   Jens; Blien,   Uwe.
We address the effects of wages on employment growth on the basis of a theoretical model from which cost and demand effects can be derived. In the empirical analysis we take a highly disaggregated perspective and apply a newly developed shift-share regression technique on an exhaustive and very accurate data set for West Germany. The regression shows that the impact of regional wages on employment growth is significantly negative. There is some variation of this effect across sectors, but in no case we find support for the claim that an exogenous wage increase leads to higher employment growth.
Tipo: Working or Discussion Paper
Palavras-chave: Employment Growth; Shift-Share-Analysis; Regional Wages; Purchasing Power Argument; Labor and Human Capital; J23; E24; R11.
Ano: 2004
URL: http://purl.umn.edu/26283

Research on “Growth Drag” of Water Resource on Agricultural Development in China
Provedor de dados: 31
Autores: Wang,   Xueyuan.
Based on the “growth drag” conceptual model of Romer, this paper computes the growth drag of water resource on agricultural development through using panel data(1997～2006) of China’s all provinces. The result shows the growth rate of agricultural production value fell 0.1121% per year on average because of the shortage of water resource. The number is seemingly small, but according to calculation, under the drag of water resource, the ratio will be reduced by 2.66% in 2030. Furthermore, it will be 3.74% in 2040 and 4.82% in 2050.
Tipo: Conference Paper or Presentation
Palavras-chave: Water resource; Agricultural production; Growth drag; Agricultural and Food Policy; Environmental Economics and Policy.
Ano: 2009
URL: http://purl.umn.edu/50326

Diversifikation und Wachstum landwirtschaftlicher Unternehmen
Provedor de dados: 31
Autores: Weiss,   Christoph R.; Thiele,   Holger D.
The liberalization of agricultural markets has increased the interest of farmers (as well as those working on policies concerned with their welfare) in agricultural diversification strategies. However, empirical research on diversification in European agricultural markets is very limited. This paper follows OUSTAPASSIDIS (1992) and investigates the relationship between different diversification strategies and farm performance (farm growth rates). The results of fixed– and random-effect models for approx. 3900 farms in Schleswig-Holstein for the period 1988/89–1997/98 show that diversification into related products increases growth rates whereas the opposite applies for diversification into unrelated products. Initial farm size has a significant and...
Tipo: Journal Article
Palavras-chave: Diversification; Growth; Farm size; Dynamic panel data analysis; Farm Management.
Ano: 2002
URL: http://purl.umn.edu/98120

THE EFFECTS OF RURALITY AND INDUSTRIAL SPECIALIZATION INCOME GROWTH: U.S. COUNTIES 2000 TO 2003
Provedor de dados: 31
Autores: Waldorf,   Brigitte S.
This paper— part of a comprehensive project on industry clusters and rural competitiveness— explores the role of industrial specialization and rurality on economic performance for counties in the continental United States. Regression models are estimated that evaluate the impact of industry cluster-specific employment shares on per capita income growth overall, as well as in a sequence of different contextual settings. Overall, the results suggest that economic disparities across U.S. counties will diminish. The results also suggest that economic specialization “per se” is not a guarantee for economic growth. Instead, economic growth very much depends on the type of specialization and the contextual setting, with distinct differences between, for example,...
Tipo: Working or Discussion Paper
Palavras-chave: Economic Growth; Industry Clusters; Rural America; Community/Rural/Urban Development; O18; O51; R11.
Ano: 2007
URL: http://purl.umn.edu/7334

Net Farm Income, Market Prices and Agricultural Productivity Growth in the United States
Provedor de dados: 31
Autores: Cahill,   Sean A.
If the claimants of net farm income are operators and unpaid family members, net farm income can be expressed as a real implicit  wage per hour of work. Bennet indicators are used to decompose changes in the real implicit  wage into input and output price change components and partial factor productivity growth (PFPG). PFPG is the difference between output growth and the growth of all inputs but operator and unpaid family labor.  Data from the ERS production account for U.S. agriculture for 1948-2002 are used. The results show that, on average, positive PFPG  was either partially or fully offset by the output and input price components. These results suggest that the accepted wisdom –namely that agricultural productivity growth is key to the sector’s...
Tipo: Conference Paper or Presentation
Palavras-chave: Productivity Analysis.
Ano: 2007
URL: http://purl.umn.edu/9359

PROSPECTS FOR RURAL GROWTH? MEASURING GROWTH LINKAGES IN A SOUTH AFRICAN SMALLHOLDER FARMING AREA
Provedor de dados: 31
Autores: Simphiwe,   N.
This paper addresses the possible impact of rising smallholder incomes on local non-agricultural development in a case study area located in the Eastern Cape province of South Africa.  It determines how increased rural incomes are spent on a mix of goods and services, and debates the implications of these spending patterns for growth in rural areas through the alleviation of demand constraints.  These results make it possible to identify areas of intervention necessary for sustaining growth originating from stimulus to tradable agriculture from economic reforms.  This paper thus contributes to an emerging literature on the possible impact of promoting smallholder agriculture in South Africa on rural livelihoods.
Tipo: Working or Discussion Paper
Palavras-chave: Rural; Growth linkages; Multipliers; Smallholder; South Africa; Africa; Community/Rural/Urban Development.
Ano: 2001
URL: http://purl.umn.edu/18027

NATURAL RESOURCE ABUNDANCE AND ECONOMIC GROWTH REVISITED
Provedor de dados: 31
Autores: Stijns,   Jean-Philippe C.
Data on energy and mineral reserves suggest that natural resource abundance has not been a significant structural determinant of economic growth between 1970 and 1989. The story behind the effect of natural resources on economic growth is a complex one that typical growth regressions do not capture well. Preliminary evidence suggests that natural resources may affect economic growth through both "positive" and "negative channels." Potential reverse causality running from these "channels" to fuel and mineral reserves further complicates the analysis. I conjecture that, as economic historians suggest, the ability of a country to exploit its resource base depends critically on the nature of the learning process involved.
Tipo: Thesis or Dissertation
Palavras-chave: International Development; Resource /Energy Economics and Policy.
Ano: 2001
URL: http://purl.umn.edu/25127

INSTITUTIONS AND ECONOMIC POLICIES FOR PRO-POOR AGRICULTURAL GROWTH
Provedor de dados: 31
Autores: Dorward,   Andrew; Fan,   Shenggen; Kydd,   Jonathan; Lofgren,   Hans; Morrison,   Jamie; Poulton,   Colin; Rao,   Neetha; Smith,   Laurence; Tchale,   Hardwick; Thorat,   Sukhadeo; Urey,   Ian; Wobst,   Peter.
This paper draws together findings from different elements of a research project examining critical components of pro-poor agricultural growth and of policies that can promote such growth in poor rural economies in South Asia and Sub-Saharan Africa. Agricultural growth, a critical driver in poverty reducing growth in many poor agrarian economies in the past, faces many difficulties in today’s poor rural areas in South Asia and Sub-Saharan Africa. Some of these difficulties are endogenous to these areas while others result from broader processes of global change. Active state interventions in ‘kick starting’ markets in 20th century green revolutions suggest that another major difficulty may be current policies which emphasize the benefits of liberalization...
Tipo: Working or Discussion Paper
Palavras-chave: Agricultural growth; Rural poverty; Sub-Saharan Africa; Green Revolution; India; International Development.
Ano: 2004
URL: http://purl.umn.edu/60170

The Causality of Foreign Direct Investment and Its Effects on Economic Growth: Re-estimated by a Directed Graph Approach
Provedor de dados: 31
Autores: Li,   Yarui; Woodard,   Joshua D.; Leatham,   David J.
This paper uses the directed acyclic graph approach to analyze the causal patterns among foreign direct investment and other economic, social, and political variables, including GDP per capita as a proxy for economic growth. We find that economic growth causes FDI inflows for developing countries, while FDI induces economic growth for developed countries. Also, stock market is found to be an intermediary that amplifies the influence on FDI from many causal variables of FDI.
Tipo: Conference Paper or Presentation
Palavras-chave: FDI; Economic growth; DAG; Financial Economics.
Ano: 2011
URL: http://purl.umn.edu/98791

Productivity Growth in U.S. Agriculture
Provedor de dados: 31
Autores: Fuglie,   Keith O.; MacDonald,   James C.; Ball,   V. Eldon.
Innovation and changes in technology have been a driving force for gains in productivity growth in U.S. agriculture. USDA's Economic Research Service has developed annual indexes of agricultural inputs, outputs, and total factor productivity (TFP) for 1948 through 2004. American agriculture relies almost entirely on productivity growth to raise output. By lowering the cost of agricultural commodities, productivity growth benefits not only farmers but also food manufacturers and consumers.
Tipo: Report
Palavras-chave: Agriculture; Productivity; Productivity growth; Total factor productivity; TFP; Labor; Farm economy; Prices; Agricultural research; Agricultural output; Technology; ERS; USDA; Production Economics; Productivity Analysis.
Ano: 2007
URL: http://purl.umn.edu/6382

Financial Development and Economic Growth: Experiences of Selected Developing Economies
Provedor de dados: 31
Autores: Ahmed,   Syed; Horner,   James; Rafiq,   Rafiqul Bhuyan.
The last two decades of the twentieth century witnessed a series of financial reforms in emerging economics of Asia, Africa and Latin America.  The seminal works of R.I. McKinnon and E.S. Shaw, which attribute the slow growth of these economies to financial repression, inspired many of these reforms.  The McKinnon-Shaw thesis demonstrates how government regulations cause low savings and investment, and ultimately engender financial repression.  Financial liberalization, in this view, creates market-based incentives and promotes economic growth.  The objectives of the paper are to (1) track financial development and critically review financial liberalization measures in the emerging economies of Brazil, Mexico, and Thailand, and (2) investigate...
Tipo: Journal Article
Palavras-chave: Financial liberalization; Financial deepening; Financial development ratios; Economic growth; Per capita GDP; Financial Economics; International Development.
Ano: 2008
URL: http://purl.umn.edu/50014

REDUCING CHILD UNDERNUTRITION: HOW FAR DOES INCOME GROWTH TAKE US?
Provedor de dados: 31
Autores: Haddad,   Lawrence James; Alderman,   Harold; Appleton,   Simon; Song,   Lina; Yohannes,   Yisehac.
How rapidly will child undernutrition respond to income growth? This study explores that question using household survey data from 12 countries. In addition, data on the undernutrition rates since the 1970s available from a cross-section of countries are employed in this investigation. Both forms of analysis yield similar results. Income increases at household and national levels imply similar rates of reduction in undernutrition. Using these estimates and better-than-historical income growth rates, we find that the Millennium Development Goal (MDG) of halving the levels of child underweight by 2015 is unlikely to be met through income growth alone. What is needed is a balanced strategy of income growth and investment in more direct interventions to...
Tipo: Working or Discussion Paper
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2002
URL: http://purl.umn.edu/16416

Business Establishment Growth in the Appalachian Region, 2000-2007:  An Application of Smooth Transition Spatial Process Models
Provedor de dados: 31
Autores: Xu,   Wan; Lambert,   Dayton M.
Business establishment growth in the Appalachian region (2000–2007) was regressed on industry sector composition controlling for demographic, physical, and economic determinants. We test the hypothesis that local response to growth determinants is geographically heterogeneous using Smooth Transition spatial process models. This class of models exhibiting endogenous regime switching behavior provides another tool for exploring the spatially heterogeneous effects of local determinants on economic growth.
Tipo: Journal Article
Palavras-chave: Appalachia; Business establishment growth; Smooth transition models; Spatial processes; Community/Rural/Urban Development; C21; C51; O47; R11.
Ano: 2011
URL: http://purl.umn.edu/113517

Pollution and the Efficiency of Urban Growth
Provedor de dados: 31
Autores: Quaas,   Martin F.; Smulders,   Sjak.
We analyze the efficiency of urbanization patterns in a dynamic model of endogenous urban growth with two sectors of production. Production exhibits increasing returns to scale on aggregate. Urban environmental pollution, as a force that discourages agglomeration, is caused by domestic production. We show that cities are too large and too few in number in equilibrium, compared to the efficient urbanization path, if economic growth implies increasing aggregate emissions. If, on the other hand, production becomes cleaner over time (`quality growth') the urbanization path approximates the efficient outcome after finite time.
Tipo: Working or Discussion Paper
Palavras-chave: Cities; Urbanisation; Pollution; Growth; Migration; Sustainable Development; Environmental Economics and Policy; Community/Rural/Urban Development; Q56; R12; O18.
Ano: 2008
URL: http://purl.umn.edu/44225

A Decomposition of North American Trade Growth since NAFTA
Provedor de dados: 31
Autores: Hillberry,   Russell H.; McDaniel,   Christine A.
Total U.S. trade with NAFTA partners has increased 78 percent in real terms since 1993–U.S.-Mexico trade alone is up 141 percent–compared to a 43 percent increase in U.S. trade with the rest of the world. In this article we compare the nature of U.S. trade growth with Canada and Mexico to growth in U.S. trade with non-NAFTA partners. We apply a simple decomposition of trade growth offered by Hummels and Klenow (2002) that provides insights into whether the United States is trading more of the same goods with NAFTA partners since 1993, or trading new products. The results provide evidence of both. A sizeable component of U.S. trade growth since 1993 can be explained by increases in the variety of products the U.S. imports from Mexico.
Tipo: Working or Discussion Paper
Palavras-chave: International Relations/Trade.
Ano: 2002
URL: http://purl.umn.edu/15866

On the Valuation of Companies with Growth Opportunities
Provedor de dados: 31
Autores: Dapena,   Jose Pablo.
Each company faces day to day investment opportunities. Just by staying in business the company is taking a decision of reinvesting capital. These opportunities have to be fairly valued to overcome misallocation of resources. A project with high growth opportunities requires high reinvestments to take full advantage of them until it reaches its mature stage. These investments can be seen as a succession of call options on future growth. When a company with such prospects is valued using the discounted cash flow technique and growth is taken implicitly in the growing cash flows and the residual value, the value thus obtained will be higher than the true one (under certain circumstances). Technology advances and the effects of globalization create enormous...
Tipo: Journal Article
Palavras-chave: Real options; Valuation; Contingent claims valuation; Financial Economics; G12.
Ano: 2003
URL: http://purl.umn.edu/44040

ENDOGENOUS RECOMBINANT GROWTH
Provedor de dados: 31
Autores: Tsur,   Yacov; Zemel,   Amos.
We extend Weitzman's (1998) recombinant growth framework to include endogenous R&amp;D decisions. The analysis is carried out in the (knowledge-capital) state space by means of two characteristic curves: one is identified as a turnpike along which growing economies evolve; the other attracts stagnating economies. Sustained growth depends on a condition relating the slopes of the characteristic curves as well as on a minimal endowment requirement. A growing economy reaches the turnpike at a most rapid R&amp;D rate and evolves along it thereafter. In the long run, the rate of growth and the income shares devoted to R&amp;D, saving and consumption approach constant values that depend on the asymptotic characteristic slopes.
Tipo: Working or Discussion Paper
Palavras-chave: Knowledge generation; Combined ideas; Endogenous R&amp;D; Balanced growth; Research Methods/ Statistical Methods; C61; O31; O41.
Ano: 2006
URL: http://purl.umn.edu/7135

Interactions between National and Regional Development
Provedor de dados: 31
Autores: Davies,   Sara; Hallet,   Martin.
Williamson (1965) argued that catching up countries experiencing strong national growth tend also to see a widening in regional disparities, whereas in more developed economies strong national growth and falling regional disparities could go hand in hand. We find some evidence of a trade-off between national growth and regional dispersion in the EU's Cohesion countries, notably in Spain and Ireland. We also find some evidence of spread effects in some richer EU Member States, although no inevitable link between lower regional disparities and stronger national growth. The potential policy implications of this analysis are also examined.
Tipo: Working or Discussion Paper
Palavras-chave: Cohesion; Catching up; Growth; EU regions; Regional policy; Community/Rural/Urban Development; O18; R11; R58.
Ano: 2002
URL: http://purl.umn.edu/26187

THE INFLUENCE OF AMENITIES AND QUALITY OF LIFE ON REGIONAL DEVELOPMENT IN ALABAMA
Provedor de dados: 31
Autores: Nzaku,   Kilungu; Bukenya,   James O.
Replaced with revised version of paper 02/13/04.
Tipo: Conference Paper or Presentation
Palavras-chave: Community/Rural/Urban Development.
Ano: 2003
URL: http://purl.umn.edu/34604

Employment Growth in the Rural South: Do Sectors Matter?
Provedor de dados: 31
Autores: Bukenya,   James O.
The paper contributes to the understanding of the role of economic sectors in employment growth by examining the extent to which sectoral employment influence employment development in the rural southeast United States over the period 1970 through 2007. The analysis employs two specifications of OLS regression to understand the role of economic sectors in employment growth processes. The first specification (number of jobs) explained approximately 36 percent of the variability in employment growth while the second specification (number of enterprises) explained roughly 43 percent of the variability over the studied period. Overall, the results suggest that although the share and the social role of agriculture are shrinking in almost all rural areas,...
Tipo: Working or Discussion Paper
Palavras-chave: Community/Rural/Urban Development; Labor and Human Capital.
Ano: 2008
URL: http://purl.umn.edu/45903

Environmental Policy, Education and Growth with Finite Lifetime: the Role of Abatement Technology
Provedor de dados: 31
Autores: Pautrel,   Xavier.
This note shows that the assumptions about the abatement technology modify the impact of the environmental taxation (both the size and the “direction”) on the long-run growth driven by human capital accumulation à la Lucas (1988), when the source of pollution is private consumption and lifetime is finite. When the human capital’s share in the abatement services production is higher (respectively lower) than in the final output production, a higher environmental tax reduces (resp. increases) the allocation of human capital in production sectors (abatement service and final output) and boostes (resp. decreases) the BGP rate of growth. When abatement services are produced with the final output, the environmental taxation does not influence growth.
Tipo: Working or Discussion Paper
Palavras-chave: Growth; Environment; Overlapping Generations; Human capital; Finite Lifetime; Abatement; Environmental Economics and Policy; Q5.
Ano: 2010
URL: http://purl.umn.edu/91003

Remittances and economic growth in Latin America and the Caribbean: The Impact of the human capital development
Provedor de dados: 31
Autores: Garcia-Fuentes,   Pablo A.; Kennedy,   P. Lynn.
Remittances are one source of external financing for developing countries that have been increasing in both size and importance as of late. However, the issue about the impact on economic growth from remittances is still opened for discussion. This paper adds to this discussion by investigating the impact of remittances on growth through human capital using a panel data analysis for a sample of 14 Latin American and Caribbean (LAC) countries during the period 1975-2000. The results indicate that remittances have a positive impact on economic growth in the representative countries from the LAC region; however, the realization of this impact holds only when the remittance receiving country has a minimum threshold of human capital stock.
Tipo: Conference Paper or Presentation
Palavras-chave: Remittances; Human Capital; Growth; Latin America and the Caribbean; International Development; International Relations/Trade; Labor and Human Capital.
Ano: 2009
URL: http://purl.umn.edu/46751

CONSUMER DEMAND FOR MANDATORY LABELING OF BEEF FROM CATTLE ADMINISTERED GROWTH HORMONES OR FED GENETICALLY MODIFIED CORN
Provedor de dados: 31
Autores: Lusk,   Jayson L.; Fox,   John A.
This study estimates the value of policies that would mandate labeling of beef from cattle produced with growth hormones or fed genetically modified corn.  At no cost, 85 percent of resondents desired mandatory labeling of beef produced with growth hormones and 64 percent of respondents preferred mandatory labeling of beef fed genetically modified corn. Estimates suggest that consumers would be willing to pay 17.0 percent and 10.6 percent higher prices for beef on average to obtain information provided via mandatory labeling about whether the beef is from cattle produced with growth hormones or fed genetically modified corn, respectively.
Tipo: Journal Article
Palavras-chave: Beef; Contingent valuation; Genetically modified foods; Growth hormones; Mandatory labeling; Demand and Price Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2002
URL: http://purl.umn.edu/15506

Total Factor Productivity Growth when Factors of Production Generate Environmental Externalities
Provedor de dados: 31
Autores: Vouvaki,   Dimitra; Xepapadeas,   Anastasios.
Total factor productivity growth (TFPG) has been traditionally associated with technological change. We show that when a factor of production, such as energy, generates an environmental externality in the form of CO2 emissions which is not internalized because of lack of environmental policy, then TFPG estimates could be biased. This is because the contribution of environment as a factor of production is not accounted for in the growth accounting framework. Empirical estimates confirm this hypothesis and suggest that part of what is regarded as technology’s contribution to growth could be attributed to the use of environment in output production.
Tipo: Working or Discussion Paper
Palavras-chave: Total Factor Productivity; Sources of Growth; Environmental Externalities; Energy; Environmental Policy; Environmental Economics and Policy; O47; Q20; Q43.
Ano: 2009
URL: http://purl.umn.edu/50405

Promoting global agricultural growth and poverty reduction
Provedor de dados: 31
Autores: Ivanic,   Maros; Martin,   William J.
Constraints on resources, growth in demand, and a slowdown in agricultural productivity raise concerns that food prices may rise substantially over the next decades. The impacts of such higher prices on the poor and the required mitigating policy responses to this problem remain unclear. This paper uses a global general equilibrium model, projections of global growth and microeconomic household models, to project potential implications for incomes, food production and poverty. We find that higher agricultural productivity would generally lower poverty, with different impacts depending where the productivity growth occurs, while protection policies that reduce imports would generally raise poverty.
Tipo: Conference Paper or Presentation
Palavras-chave: Poverty; Growth; Projections; Agricultural and Food Policy; Farm Management; Land Economics/Use.
Ano: 2010
URL: http://purl.umn.edu/61098

Portfolio selection with growth optimization and downside protection
Provedor de dados: 31
Autores: Lagerkvist,   Carl Johan; Olson,   Kent D.
This paper applies growth optimization with downside protection as a portfolio selection technique. The model is based on power-log utility functions that combine portfolio growth maximization with the behavioural tenets of prospect theory. We use three assets (a farm return index, a stock market index, and a Treasury bond index) to illustrate how effective this technique is compared to the standard model of growth maximization.
Tipo: Conference Paper or Presentation
Palavras-chave: Portfolio management; Growth optimization; Financial Economics; D92.
Ano: 2007
URL: http://purl.umn.edu/9724

Political Persistence, Connections and Economic Growth
Provedor de dados: 31
Autores: Bellettini,   Giorgio; Berti Ceroni,   Carlotta; Prarolo,   Giovanni.
Using data on a panel of 56 democratic countries in the period 1975-2004, we find evidence of a negative association between political stability and economic growth which is stronger and empirically more robust in countries with high bureaucratic costs. Motivated by these results, which contrast with previous contributions, we develop a model of growth with quality improvements where political connections with long-term politicians can be exploited by low-quality producers to defend their monopoly position and prevent innovation and entry of high-quality competitors. This requires that the incumbent politician remains in office and that the red-tape cost advantage granted by political connections is large relative to the quality upgrade related to...
Tipo: Working or Discussion Paper
Palavras-chave: Political Persistence; Growth; Innovation; International Development; O43.
Ano: 2009
URL: http://purl.umn.edu/55828

Successful Transition towards a Virtuous Cycle of Human Development and Economic Growth: Country Studies
Provedor de dados: 31
Autores: Ranis,   Gustav; Stewart,   Frances.
This paper explores the two-way links between Economic Growth and Human Development by examining the performance of some countries which have been successful in both dimensions and a few which have not.  The specific aim is to examine the historical experience of six countries in order to determine how a system can move to a situation in which improvements in Human Development accompany and support higher rates of growth which, in turn, contribute to further improvements in Human Development as the basic societal objective.
Tipo: Working or Discussion Paper
Palavras-chave: International Development; Labor and Human Capital.
Ano: 2006
URL: http://purl.umn.edu/28396

SEQUENCING CAPITAL AND LAND MARKET REFORMS FOR BROADLY BASED GROWTH
Provedor de dados: 31
Autores: Carter,   Michael R.
After developing a conceptual apparatus, this paper econometrically explores the basis and bias of agrarian growth in contemporary Paraguay, a country where increasing land scarcity and rural unrest have occurred in the midst of rapid export growth. By taking apart the microeconomics of the growth boom, the goal is not only to uncover what is happening, but to identify policy options which might modify the outcome. The paper's chief finding is that more broadly based or inclusionary growth not only requires a microeconomic activism which reaches beyond the broad dictates of liberalization, but also attention to the specific temporal sequencing or ordering of these sectoral policies.
Tipo: Working or Discussion Paper
Palavras-chave: Land Economics/Use.
Ano: 1994
URL: http://purl.umn.edu/12689

Crescimento de Schizodon Intermedius Garavello &amp;amp; Britski (Ostheichthyes, Anostomidae) do Rio Tibagi (Sertanópolis, Paraná)
Provedor de dados: 104
Autores: Orsi,Mário Luís; Shibatta,Oscar Akio.
This work consists of age, growth, and circuli formation period determination and the relation of reproduction, temperature, and pluviosity on the growth of S. intermedius Garavello &amp;amp; Britski, 1990. The growth curve was adjusted by the Bertalanfy's expression and the relationship between weight and size was made by the minimum square method to determine the conditioning factor. Gonadossomatic index (IGS) was used to study the reproduction. The assintotic values for length were 33,94 cm and 44,81 cm for males and females, respectively. The circulus were formed annually and the growth was slow and the maximum age was determined to be nine years. The formation of the circuli was influenced by the reproduction, probably allied to other abiotic factors...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Schizodon intermedius; Age; Growth; Tibagi river.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000300009

Seedling growth of understorey species of a Southeast Brazilian tropical forest
Provedor de dados: 52
Autores: Válio,Ivany Ferraz Marques.
Thirteen understorey species of a mesophyllous tropical forest were studied under two different photosynthetic photon flux densities (PPFD). Seedlings were grown in the glasshouse under 51% and 2.6% solar PPFD. Growth of the seedlings was evaluated by 1-) total height; 2-) leaf number; 3-) leaf dry mass;4-) stem dry mass; 5-) root dry mass; 6-) stem length/mass; 7-)shoot/root mass; 8-) percent allocation to leaf, stem and roots. For most of the parameters recorded, low PPFD drastically reduced growth. It seemed that the strategy of these understorey species was a reduction of growth under low PPFD saving energy for survival.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seedling growth; Understorey species; Shade; Tropical forest.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000400024

Growth evaluation of Oreochromis niloticus (Cichlidae, Neopterygii) exposed to Trichlorfon
Provedor de dados: 52
Autores: Guimarães,Ana Tereza Bittencourt; Calil,Patrícia.
The aim of this work was to evaluate the influence of Trichlorfon on the growth of cultured fishes. Using Oreochromis niloticus as fish model, bioassays were performed in the laboratory and field. Biometry was performed for 16 weeks. The treatment started after the sixth week of biometry, with the application of five weekly doses of 0.25 ppm of Trichlorfon. Growth data were compared by longitudinal analyses. In the laboratory, the treated fishes showed a reduction of growth; however, the statistical significance was only seen in the variable weight. In the field, the growth of treated fish was higher than that of the controls. This suggested that the treatment should be done in tanks with lower relative biomass to maintain the good zootechnic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Organophosphate Tilapia; And aquaculture.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000200012

Growth curve and development of the internal calli structure of Eucalyptus camaldulensis Dehn
Provedor de dados: 52
Autores: Mendonça,Evânia Galvão; Paiva,Luciano Vilela; Stein,Vanessa Cristina; Pires,Marinês Ferreira; Santos,Breno Régis; Pereira,Fabricio José.
The objective of this work was to elucidate the growth curve of Eucalyptus camaldulensis Dehn. calli analyzing their anatomical modifications. A sigmoid aspect of the growth curve of the calli fresh matter was observed, with five different phases (lag, exponential, linear, deceleration and decline). In the lag phase, the highest growth percentage 87%, was observed, which reduced during the evaluation period to 17% in the linear phase. As for the anatomical analyses, cellular multiplications was observed during the lag and exponential phases and increase in cell size during the linear phase, promoting the calli volume growth and the establishment of the globular conformation.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: In vitro cultivation; Organogenesis; Anatomy; Astra blue; Safranin; Forestry.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000600012

Effect of benzene compounds from plants on the growth and hyphal morphology in Neurospora crassa
Provedor de dados: 58
Autores: Neves,Fabrícia Mendonça; Kawano,Cristina Yoshiko; Said,Suraia.
The effects of the benzene compounds from plants, respectively cinnamic acid, coumaric acid, ferulic acid, caffeic acid, and cinnamic aldehyde on growth and hyphal morphology of Neurospora crassa, were investigated. Cinnamic acid, ferulic acid and cinnamic aldehyde inhibited colony growth, but produced no visible alterations on hyphae. Caffeic acid and coumaric acid did not inhibit growth, but changed hyphal morphology. The results suggest that caffeic and coumaric acids probably affect polarity maintenance (the continued deposition of wall material at the extending tip), while cinnamic aldehyde, ferulic and cinnamic acids decrease growth rate, but did not change hyphal polarity. The actin cytoskeleton and the Spitzenkörper appeared diffuse and not clearly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cinnamic acid; Ferulic acid; Cinnamic aldehyde.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822005000200016

Measuring of Mycobacterium tuberculosis growth: a correlation of the optical measurements with colony forming units
Provedor de dados: 58
Autores: Peñuelas-Urquides,Katia; Villarreal-Treviño,Licet; Silva-Ramírez,Beatriz; Rivadeneyra-Espinoza,Liliana; Said-Fernández,Salvador; León,Mario Bermúdez de.
The quantification of colony forming units (cfu), turbidity, and optical density at 600 nm (OD600) measurements were used to evaluate Mycobacterium tuberculosis growth. Turbidity and OD600 measurements displayed similar growth curves, while cfu quantification showed a continuous growth curve. We determined the cfu equivalents to McFarland and OD600 units.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Bacterial growth; Colony forming units; McFarland; Mycobacterium tuberculosis; Optical density.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100042

Growth kinetics of Mycobacterium tuberculosis measured by quantitative resazurin reduction assay: a tool for fitness studies
Provedor de dados: 58
Autores: von Groll,Andrea; Martin,Anandi; Portaels,Françoise; Silva,Pedro Eduardo Almeida da; Palomino,Juan Carlos.
We standardized a method to evaluate the growth kinetics of Mycobacterium tuberculosis by measuring quantitatively the reduction of resazurin by spectrophotometry. Growth curves and the rate of growth of twenty-one M. tuberculosis clinical isolates were determined. The method showed technical simplicity and is inexpensive to assess the fitness of each isolate.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth kinetics; Mycobacterium tuberculosis; Resazurin; Fitness.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000200006

Changes in growth and superoxide dismutase activity in Hydrilla verticillata L. under abiotic stress
Provedor de dados: 61
Autores: Panda,Sanjib Kumar; Khan,Mohammad Hussain.
A study was made of the role of various heavy metals (chromium, zinc, copper and cadmium) together with the effects of NaCl-salinity, PEG-mediated water stress and temperature on growth and superoxide dismutase (SOD) activity in hydrilla (Hydrilla verticillata L.). Almost all metals studied reduced growth but presented a modulatory effect at lower concentrations. NaCl-salinity, water stress and temperature treatments also reduced growth. SOD activity was inhibited by both chromium and zinc but increased by copper and cadmium. NaCl-salinity increased SOD activity while water stress decreased it. SOD showed thermostability with a higher activity being recorded at 45ºC.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth; Heavy metals; NaCl; PEG; Superoxide dismutase; Temperature.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202004000200007

Promoting Sustainable Pro-Poor Growth in Rwandan Agriculture: What are the Policy Options?
Provedor de dados: 31
Autores: Morris,   Michael L.; Drake,   Liz; Ezemenari,   Kene; Diao,   Xinshen.
In 2000, as part of its strategy for growth and poverty reduction, the Government of Rwanda set a goal to increase per capita income from US$230 to US$900 and halve the incidence of poverty by 2020. Two years after those targets were established Rwanda's first Poverty Reduction Strategy Paper (PRSP) projected that GDP growth in the range of 6 to 7 percent would be needed over the long term for those targets to be realized. The principal sources of growth in the short to medium term were to be the agriculture and manufacturing sectors, with agricultural projected to start at 5.2 percent and accelerate over the period due to productivity improvements. Manufacturing growth was projected to rise sharply to 11.5 percent, based on the expansion of manufacturing...
Tipo: Conference Paper or Presentation
Palavras-chave: Environmental Economics and Policy; International Development.
Ano: 2007
URL: http://purl.umn.edu/9908

Conserving and Restoring Old Growth in Frequent-fire Forests: Cycles of Disruption and Recovery
Provedor de dados: 7
Autores: Egan, Dave; ; Dave.Egan@nau.edu.
I provide a synthesis of the papers in the Special Issue, The Conservation and Restoration of Old Growth in Frequent-fire Forests of the American West. These papers&amp;#8212;the product of an Old Growth Writing Workshop, held at Northern Arizona University in Flagstaff, Arizona on 18&amp;#8211;19 April 2006&amp;#8212;represent the ideas of 25 workshop participants who argue for a new attitude toward managing old growth in the frequent-fire forests of the American West. Unlike the lush, old-growth rainforests of the Pacific Northwest, the dry, frequent-fire forests of the western United States evolved with surface fires that disturbed the system with such regularity that young trees were almost always killed. When saplings did survive, they grew beyond the...
Tipo: Peer-Reviewed article
Palavras-chave: Adaptive cycle  definitions of old growth  forest management  forest policy  old-growth forests  social&amp;#8211; Ecological system.
Ano: 2007

Using an integral projection model to assess the effect of temperature on the growth of gilthead seabream Sparus aurata
Provedor de dados: 5
Autores: Heather, F. J.; Childs, D. Z.; Darnaude, A. M.; Blanchard, J. L.
Accurate information on the growth rates of fish is crucial for fisheries stock assessment and management. Empirical life history parameters (von Bertalanffy growth) are widely fitted to cross-sectional size-at-age data sampled from fish populations. This method often assumes that environmental factors affecting growth remain constant over time. The current study utilized longitudinal life history information contained in otoliths from 412 juveniles and adults of gilthead seabream, Sparus aurata, a commercially important species fished and farmed throughout the Mediterranean. Historical annual growth rates over 11 consecutive years (2002-2012) in the Gulf of Lions (NW Mediterranean) were reconstructed to investigate the effect of temperature variations on...
Tipo: Text
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00445/55686/74998.pdf

Geographic variability of sardine growth across the northeastern Atlantic and the Mediterranean Sea
Provedor de dados: 5
Autores: Silva, A; Carrera, P; Masse, Jacques; Uriarte, A; Santos, M; Oliveira, P; Soares, E; Porteiro, C; Stratoudakis, Y.
This study describes broad-scale spatial variations in sardine growth across the northeastern Atlantic and Mediterranean waters using opportunistic samples collected in recent years. More detailed information on spatial, decadal and seasonal growth variations is provided for the Iberian-Biscay region using data collected in acoustic surveys since the mid-1980s. Growth curves are fitted to annual or monthly length-at-age data using a robust Von Bertalanffy model; parameters for recent samples are compared with literature information using an auximetric plot while differences between areas within the Iberian-Biscay region are tested by log-likelihood ratio tests. Sardine growth performance is generally lower in the Mediterranean and declines across the...
Tipo: Text
Palavras-chave: Iberian Biscay region; Spatio temporal variation; Growth; Sardina pilchardus.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-4078.pdf

Environmental impacts of genetic improvement of growth rate and feed conversion ratio in fish farming under rearing density and nitrogen output limitations
Provedor de dados: 5
Autores: Besson, M.; Aubin, J.; Komen, H.; Poelman, M.; Quillet, E.; Vandeputte, Marc; Van Arendonk, J. A. M.; De Boer, I. J. M.
Today, fish farming faces an increasing demand in fish products, but also various environmental challenges. Genetic improvement in growth rate and feed conversion ratio is known to be an efficient way to increase production and increase efficiency in fish farming. The environmental consequences of genetic improvement in growth rate and feed conversion ratio, however, are unknown. In this study, we investigated the environmental consequences of genetic improvement in growth rate and feed conversion ratio in an African catfish farm, using Recirculating Aquaculture System (RAS). In RAS, total fish production of the farm is limited by rearing density or by the capacity to treat dissolved nitrogen. To evaluate the environmental consequences of genetic...
Tipo: Text
Palavras-chave: Life cycle assessment; African catfish; Feed efficiency; Recirculating aquaculture system; Selection; Thermal growth coefficient.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00302/41355/40546.pdf

Otolith growth and age estimation of bastard grunt, Pomadasys incisus (Actinopterygii: Perciformes: Haemulidae), in the Gulf of Tunis (Central Mediterranean).
Provedor de dados: 5
Autores: Chater, Ines; Romdhani, Ahlem; Dufour, Jean-louis; Mahe, Kelig; Francour, Patrice; Chakroun-marzouk, Nadia.
Background. Bastard grunt, Pomadasys incisus (Bowdich, 1825), is reported as a well-established species in the Mediterranean Sea. Although bastard grunt has rapidly expanded its area of distribution in the Mediterranean, there is no information about its age and growth. The aim of this study was to provide data about growth, condition, and first sexual maturity of the species in order to contribute to a better management of its fishery. Materials and methods. A total of 515 specimens of bastard grunt were caught in the Gulf of Tunis. The age was determined from otoliths. Length–weight relation, von Bertalanffy equation, and growth rate were employed to evaluate the fish growth. Also the condition factor and length at first sexual maturity were calculated....
Tipo: Text
Palavras-chave: Sagittal otoliths; Biological traits; Von Bertalanffy growth function; Length-weight relation; Pomadasys incisus.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00259/37006/35502.pdf

Can Green Growth Really Work and what are the True (Socio-)Economics of Climate Change?
Provedor de dados: 21
Autores: Hoffmann, Ulrich.
Many economists and policy makers advocate a fundamental shift towards "green growth" as the new, qualitatively-different growth paradigm, largely based on enhanced material/resource/energy efficiency, structural changes towards a service-dominated economy and a switch in the energy mix favouring renewable forms of energy.  "Green growth" may work well in creating new growth impulses with reduced environmental load and facilitating related technological and structural change. But can it also mitigate climate change at the required scale (i.e. significant, absolute and permanent decline of greenhouse gas (GHG) emissions at global level) and pace (i.e. in no more than two decades)?  This paper argues that growth, technological, population-expansion and...
Tipo: Working paper
Palavras-chave: Policy environments and social economy; Environmental aspects.
Ano: 2015
URL: http://orgprints.org/29948/1/hoffman-2015-e-paper_green_growth_heinrichboellfoundation.pdf

State of the art review (WP2). On healthy growth initiatives in the mid-scale values-based chain of organic food
Provedor de dados: 21
Autores: Kvam, Gunn-Turid; Bjørkhaug, Hilde.
The Core organic II project HealthyGrowth assumes that present organic value chains seem either to operate in local markets with direct sale or in conventional retail chains where organic qualities are not properly communicated (HealthyGrowth (HG) proposal 2010). Within this statement lies an observation from previous research that local organic market chains have inherent problems in moving from niche to volume and mainstream large-scale market chains have inherent problems in securing and advancing organic values. Therefore, the aim of the HealthyGrowth project is to investigate a range of successful mid-scale organic value chains in order to learn how they are able to combine volume and values. Before the participants of the project start collecting...
Tipo: Report
Palavras-chave: "Organics" in general Soil Values; Standards and certification Health and welfare Consumer issues Austria Denmark Finland France Lithuania Norway Sweden History of organics Quality and evaluation of inputs Country reports Germany Regulation.
Ano: 2014
URL: http://orgprints.org/25620/7/25620.pdf

PRÓ-POBRE OU EMPOBRECEDOR: QUAL ACONTRIBUIÇÃO DO CRESCIMENTO ECONÔMICO PARA ALAGOAS?
Provedor de dados: 31
Autores: Tejada,   Cesar Augusto Oviedo; Jacinto,   Paulo De Andrade; Bezerra,   Luciane De Araujo; Santos,   Anderson Moreira Aristides Dos.
O presente trabalho tem como objetivo analisar a relação entre crescimento econômico e a pobreza para as microrregiões do estado de Alagoas, utilizando dados do Atlas do Desenvolvimento Humano para os anos 1991 e 2000. Buscou-se analisar em que medida o crescimento econômico tem se revelado um instrumento relativamente eficaz de combate à pobreza do ponto de vista qualitativo, ou seja, se esse crescimento pode ser considerado pró-pobre. Para tanto, foi estimada a elasticidade da pobreza em relação ao crescimento econômico para as microrregiões alagoanas, que apresentou uma relação negativa entre a pobreza e crescimento econômico. Em seguida foi construída a curva “crescimento-pobreza” para as microrregiões de Alagoas. E os resultados indicam que na maioria...
Tipo: Conference Paper or Presentation
Palavras-chave: Crescimento pró-pobre; Pobreza; Alagoas; Pro-poor growth; Poverty; Alagoas; Food Security and Poverty.
Ano: 2008
URL: http://purl.umn.edu/108622

Economic Growth, Lifestyle Changes, and the Coexistence of Under and Overweight in China: A Semiparametric Approach
Provedor de dados: 31
Autores: Shimokawa,   Satoru; Pinstrup-Andersen,   Per.
We investigate the relationship between changes in socioeconomic factors and the emerging coexistence of under and overweight among adults in China during 1991-2000. Our key questions are: (1) whether any socioeconomic factor explains both increasing overweight (Body Mass Index (BMI)less than or equal to 25 kg/m2) and remaining underweight (BMI greater than or equal to 18.5 kg/m2), (2) whether China's continuing economic growth leads to further increase in the prevalence of overweight, and (3) whether China's economic growth alone can lead to commensurate decrease in its remaining underweight. Based on the theoretical model in Lakdawalla and Philipson (2002), we focus on the effects of economic growth on weight through changes in income, job-related...
Tipo: Conference Paper or Presentation
Palavras-chave: Economic Growth; Underweight; Overweight; Smiparametric; China; Health Economics and Policy; International Development.
Ano: 2006
URL: http://purl.umn.edu/25518

Influence of intrauterine and extrauterine growth on neurodevelopmental outcome of monozygotic twins
Provedor de dados: 56
Autores: Reolon,R.K.; Rotta,N.T.; Agranonik,M.; Silva,A.A. Moura da; Goldani,M.Z.
There have been indications that intrauterine and early extrauterine growth can influence childhood mental and motor function. The objective of the present study was to evaluate the influence of intrauterine growth restriction and early extrauterine head growth on the neurodevelopmental outcome of monozygotic twins. Thirty-six monozygous twin pairs were evaluated at the corrected age of 12 to 42 months. Intrauterine growth restriction was quantified using the fetal growth ratio. The effects of birth weight ratio, head circumference at birth and current head circumference on mental and motor outcomes were estimated using mixed-effect linear regression models. Separate estimates of the between (interpair) and within (intrapair) effects of each measure on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Intrauterine growth restriction; Neurodevelopment; Monozygotic twins; Fetal growth ratio; Head circumference; Neurocognitive development.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000800010

Age et croissance de &lt;Pagellus bellottii&gt; (sparidae) des côtes Mauritaniennes
Provedor de dados: 20
Autores: Ghorbel, M.; Ould Yarba, L.; Bouain, A.
Age and growth of &lt;Pagellus bellottii&gt; (Sparidae) of Mauritanian coasts : The red Pandora &lt;Pagellus bellottii&gt; is one of the most important demersal species in the fisheries of Mauritanian coasts. Several gears and fleet traditionally exploit it. The studies concerning this fish and particularly those of its age and growth are rare and haven’t used the adequate method, which founded on hard pieces like scale and vertebra. The objective of the present work is to contribute to the knowledge of the growth parameters of the red Pandora using the scales method not yet used in the studied area. To determine the age and to study the growth of &lt;Pagellus bellottii&gt; in Mauritanian coasts, we have used the scales of 544 individuals. We have token, 8...
Tipo: Journal Contribution
Palavras-chave: Scalimétrie; Âge; Croissance  Sparidae &lt; Pagellus bellottii&gt; Age Growth Demersal fisheries Growth Age http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_186.
Ano: 2004
URL: http://hdl.handle.net/1834/1165

Challenges for Revival of Indian Agriculture
Provedor de dados: 31
Autores: Dev,   S. Mahendra.
In India, economic growth has improved significantly during the past two and a half decades, particularly in the post-reform period. India is considered as one of the fastest growing economies in the world. However, the exclusion problems have not been addressed seriously by the government programmes and strategies. The experience of the economic reforms during the past 15 years indicates that while there have been improvements in the economic growth, foreign exchange, IT revolution, export growth, etc., the income distribution has been unequal and only some sections of the population have been benefited more from this higher growth and prosperity. In other words, real development in terms of growth shared by all sections of the population has not taken...
Tipo: Journal Article
Palavras-chave: Agricultural and Food Policy.
Ano: 2009
URL: http://purl.umn.edu/57379

A single bio-energetics growth and reproduction model for the oyster Crassostrea gigas in six Atlantic ecosystems
Provedor de dados: 5
Autores: Alunno-bruscia, Marianne; Bourles, Yves; Maurer, Daniele; Robert, Stephane; Mazurie, Joseph; Gangnery, Aline; Goulletquer, Philippe; Pouvreau, Stephane.
Many studies based on bioenergetics growth models have investigated the effects of environmental factors on oyster (Crassostrea gigas) growth and physiology. However, most of these models are site-specific and cannot be applied to other culture sites without the re-estimation of parameters or re-formulation of some processes. We aimed to develop a generic growth model suitable for application in contrasting environments, with a constant set of parameters. We tested the oyster-DEB model (Bourlès et al. 2009) for the stimulation of C. gigas growth in different cohorts (spats and adults) at major shellfish culture sites in France, in several years: Arcachon (1993–1994); Marennes-Oléron (2007); Quiberon (1999, 2000, 2001); Rade de Brest (2008); Baie du...
Tipo: Text
Palavras-chave: DEB theory; Modelling; Bivalves; Crassostrea gigas; Phytoplankton; Temperature effect; Coastal environment.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00043/15403/12762.pdf

Modelling growth variability in longline mussel farms as a function of stocking density and farm design
Provedor de dados: 5
Autores: Rosland, Rune; Bacher, Cedric; Strand, Oivind; Aure, Jan; Strohmeier, Tore.
Mussels (Mytilus edulis) are commonly cultivated on artificial structures like rafts, poles or longlines to facilitate farming operations. Farm structures and dense mussel populations may result in water flow reduction and seston depletion and thus reduced individual mussel growth and spatial growth variability inside a farm. One of the challenges in mussel farming is thus to scale and configure farms in order to optimise total mussel production and individual mussel quality under different environmental regimes. Here we present a spatially resolved model for simulation of flow reduction, seston depletion and individual mussel growth inside a longline farm based on information about farm configuration (spacing between longlines, farm length and stocking...
Tipo: Text
Palavras-chave: Longline farm configuration; Environmental conditions; Flow reduction; Seston depletion; Spatial growth variability.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00038/14887/12210.pdf

Genomic growth curves of an outbred pig population
Provedor de dados: 74
Autores: Silva,Fabyano Fonseca e; Resende,Marcos Deon V. de; Rocha,Gilson Silvério; Duarte,Darlene Ana S.; Lopes,Paulo Sávio; Brustolini,Otávio J.B.; Thus,Sander; Viana,José Marcelo S.; Guimarães,Simone E.F.
In the current post-genomic era, the genetic basis of pig growth can be understood by assessing SNP marker effects and genomic breeding values (GEBV) based on estimates of these growth curve parameters as phenotypes. Although various statistical methods, such as random regression (RR-BLUP) and Bayesian LASSO (BL), have been applied to genomic selection (GS), none of these has yet been used in a growth curve approach. In this work, we compared the accuracies of RR-BLUP and BL using empirical weight-age data from an outbred F2 (Brazilian Piau X commercial) population. The phenotypes were determined by parameter estimates using a nonlinear logistic regression model and the halothane gene was considered as a marker for evaluating the assumptions of the GS...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bayesian LASSO; Nonlinear regression; SNP effects.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572013000400010

Аллометрия скоростей роста, питания и метаболизма гребневиков и медуз
Provedor de dados: 13
Autores: Заика, В. Е.
На материалах по росту и скорости метаболизма гребневиков и медуз подтверждено ра­нее сделанное автором заключение о соответствии роста этих желетелых животных экспоненци­альному варианту балансовой модели роста. Эта модель основана на предположении, что при экспоненциальном росте аллометрические уравнения скоростей питания и метаболизма имеют показатель степени, равный 1 (изометрия), что и подтверждают данные по аллометрии скорости дыхания и экскреции аммиака. Изометрия физиологических скоростей, по мнению автора, связана с отсутствием у же­летелых скелета и вероятным сохранением постоянной доли мезоглеи в теле гребневиков и медуз по мере их роста.
Tipo: Journal Contribution
Palavras-chave: Allometry; Growth rate; Allometry; Growth rate; Http://aims.fao.org/aos/agrovoc/c_24962; Http://aims.fao.org/aos/agrovoc/c_16130.
Ano: 2002
URL: http://repository.ibss.org.ua/dspace/handle/99011/502

Differences on allocation of available resources, in growth, reproduction, and survival, in an exotic gastropod of Physidae compared to an endemic one
Provedor de dados: 76
Autores: Núñez,Verónica.
Physa acuta Draparnaud, 1805 is an invasive gastropod that can affect local species. In Argentina, it is widespread and abundant, even in environments inhabited by the native species Stenophysa marmorata Guilding, 1828. Its predominance raises the question whether this could be explained by a more successful energy allocation in functional requirements (growth, reproduction and survival) compared to S. marmorata. This study was aimed at comparing growth rates, as well as survival and fecundity, between both species under laboratory conditions. Individuals born on the same day were grouped in four per aquaria and kept under controlled conditions of food, light, and temperature. Snails were weekly measured (maximum shell length), and growth rates were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fecundity; Invasive species; Longevity; Physa acuta; Stenophysa marmorata.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212010000300014

Optimal proteome allocation and the temperature dependence of microbial growth laws
Provedor de dados: 5
Autores: Mairet, Francis; Gouzé, Jean-luc; De Jong, Hidde.
Although the effect of temperature on microbial growth has been widely studied, the role of proteome allocation in bringing about temperature-induced changes remains elusive. To tackle this problem, we propose a coarse-grained model of microbial growth, including the processes of temperature-sensitive protein unfolding and chaperone-assisted (re)folding. We determine the proteome sector allocation that maximizes balanced growth rate as a function of nutrient limitation and temperature. Calibrated with quantitative proteomic data for Escherichia coli, the model allows us to clarify general principles of temperature-dependent proteome allocation and formulate generalized growth laws. The same activation energy for metabolic enzymes and ribosomes leads to an...
Tipo: Text
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00686/79829/82633.pdf

Impact of Environmental Covariation in Growth and Mortality on Evolving Maturation Reaction Norms
Provedor de dados: 5
Autores: Marty, Lise; Dieckmann, Ulf; Rochet, Marie-joelle; Ernande, Bruno.
Maturation age and size have important fitness consequences through their effects on survival probabilities and body sizes. The evolution of maturation reaction norms in response to environmental covariation in growth and mortality is therefore a key subject of life-history theory. The eco-evolutionary model we present and analyze here incorporates critical features that earlier studies of evolving maturation reaction norms have often neglected: the trade-off between growth and reproduction, source-sink population structure, and population regulation through density-dependent growth and fecundity. We report the following findings. First, the evolutionarily optimal age at maturation can be decomposed into the sum of a density-dependent and a...
Tipo: Text
Palavras-chave: Phenotypic plasticity; Growth-reproduction trade-off; Source-sink population structure; Density dependence; Selection gradient.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00035/14607/11988.pdf

Spatial variation in growth, maturation schedules and reproductive investment of female sole Solea solea in the Northeast Atlantic
Provedor de dados: 5
Autores: Mollet, Fabian M.; Engelhard, Georg; Vainikka, Anssi; Laugen, Ane; Rijnsdorp, Adriaan D.; Ernande, Bruno.
Latitudinal variation in life-history traits is often explained by phenotypically plastic responses or local adaptations to different thermal regimes. We compared growth, maturation schedules and reproductive investment of female sole Solea solea between 8 populations, covering much of the species' distribution in northern Europe, with respect to thermal gradients. An energy allocation model was fitted to size–age data, and probabilistic maturation reaction norms were estimated from size–age–maturity data. We found that northern populations from colder environments had higher rates of energy acquisition and reproductive investment, an intrinsic tendency to mature earlier, and had smaller asymptotic sizes than southern populations from warmer environments....
Tipo: Text
Palavras-chave: Countergradient variation; Phenotypic plasticity; Growth; Maturation reaction norm; Temperature; Mortality-induced evolution.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00124/23523/21360.pdf

Evidence of underestimation of European hake growth in the Bay of Biscay, and its relationship with bias in the agreed method of age estimation
Provedor de dados: 5
Autores: De Pontual, Helene; Groison, Anne-laure; Pineiro, Carmen; Bertignac, Michel.
In 2002, a pilot experiment on hake tagging was carried out using methodology specifically developed to catch and handle fish in,good condition. By the end of 2005, 36 hake and five tags had been returned to the laboratory (a 3.1% return rate) with a maximum time at liberty of 1066 days. The somatic growth of the recoveries proved to be twofold higher than that expected from published von Bertalanffy growth functions for the species in the Bay of Biscay. The growth underestimation was related to age overestimation, as demonstrated by two independent analyses. The first was based on a blind interpretation of marked otoliths conducted independently by two European experts involved in the routine age estimation of hake. The result shows that the age estimates...
Tipo: Text
Palavras-chave: Tagging; Otolith; Merluccius merluccius; Growth; European hake; Age validation; Age estimation method; Age.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-2221.pdf

Utility of mixed effects models to inform the stock structure of whiting in the Northeast Atlantic Ocean
Provedor de dados: 5
Autores: Barrios, Alexander; Ernande, Bruno; Mahe, Kelig; Trenkel, Verena; Rochet, Marie-joelle.
Stock structure of whiting (Merlangius merlangus) in the North East Atlantic is unclear. This study uses mixed effects models to analyse growth variability as a way to investigate stock identification. Growth trajectories for 634 individuals and length-at-age data for 78,686 individuals were analysed for spatial coherence and temporal synchrony in the parameters of the von Bertalanffy growth model. Growth was found to differ among most ICES divisions, and temporal fluctuations were poorly synchronized between areas. This study illustrates how growth analyses can contribute to stock identification, in addition to other data.
Tipo: Text
Palavras-chave: Growth; Whiting; North East Atlantic; Otolith; Von Bertalanffy growth model; Mixed effects models.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00373/48415/48810.pdf

Tag and recapture of European hake (Merluccius merluccius L.) off the Northwest Iberian Peninsula: First results support fast growth hypothesis
Provedor de dados: 5
Autores: Pineiro, C; Rey, J; De Pontual, Helene; Goni, R.
In the first tagging experiment of European hake (Merluccius merluccius L.) conducted off the NW Iberian Peninsula to study hake growth in the wild we released 527 live tagged individuals. The survival rate after capture and tagging was 58%. Mortality during capture was positively correlated with depth of capture and negatively correlated with hake size. Fifteen months after tagging, seven individuals (1.3%) had been recaptured with times at liberty ranging from 29 to 466 days. We provide the first direct measurements of growth rates of Southern stock European hake in the wild and compare them with rates obtained from tagging experiments in other regions and with rates derived from conventional otolith age reading. The mean somatic growth rate of all...
Tipo: Text
Palavras-chave: Northeast Atlantic; Age estimation; Tag recapture; Growth rates; European hake.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-3525.pdf

The growth of the banded carpet shell (Paphia rhomboides) in a contrasted region, the English Channel (Western Europe): A modelling study
Provedor de dados: 5
Autores: Savina, Marie; Menesguen, Alain.
Paphia rhombofdes is an infaunal filter-feeding bivalve, particularly widespread and abundant in the English Channel. In order to investigate the influence of the growth-related post-settlement processes on its distribution, a spatial growth model was developed and linked to an existing ecological model of the English Channel. This model was partially parameterized on the basis of a specific ecophysiological experimental study, and calibrated with growth data collected in the "Golfe Normand-Breton" (GNB), a region of the English Channel. Compared to the actual distribution of P. rhomboides, the results suggest a strong influence of the growth-related processes on the distribution of the species: particularly, the extremely low growth obtained with the...
Tipo: Text
Palavras-chave: Distribution; Meroplanktonic invertebrates; Ecophysiology; Growth model; English channel; Paphia rhomboides.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-3115.pdf

Modelling growth and bioaccumulation of Polychlorinated biphenyls in common sole (Solea solea)
Provedor de dados: 5
Autores: Eichinger, Marie; Loizeau, Veronique; Roupsard, Francois; Le Guellec, Anne-marie; Bacher, Cedric.
Experiments were performed on juvenile sole in controlled conditions in the aim of understanding how the biology of common sole may affect the accumulation and dilution of Polychlorinated biphenyls (PCBs). The fish were raised in optimal conditions and divided into two tanks: one control tank and one PCB tank. 4 PCB congeners were added to food for 3 months in the PCB tank; the soles were subsequently fed unspiked food for 3 months. Growth (length and weight) and PCB concentrations were monitored in both tanks and juvenile sole growth was not significantly affected by PCBs in our experimental conditions. We used the Dynamic Energy Budget (DEB) theory to model sole biology and paid special attention to model calibration through the wide use of data from the...
Tipo: Text
Palavras-chave: Solea solea; Polychlorinated Biphenyls; Growth Model; Bioaccumulation Model; DEB Theory.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00012/12299/9257.pdf

Grofit: Fitting biological growth curves
Provedor de dados: 17
Autores: Matthias Kahm; Guido Hasenbrink; Hella Lichtenberg-Frate; Jost Ludwig; Maik Kschischo.
Growth experiments are routinely used to analyze basic properties of a given organism or cellular model. Similarly, within the TRANSLUCENT project the characterization of cellular growth and particularly under conditions of high extra cellular potassium or sodium is an important task. Any growth analysis should ideally reveal a relationship between the concentration of a compound/substrate and its effect on a particular growth parameter. In view of the quite labor intensive analysis of hundreds of growth curves - sometimes not revealing ideal relationships - the Grofit-software was developed to support biologists and such approaches. Within the software package, specifically tailored regression and bootstrapping techniques are utilized to statistically...
Tipo: Poster
Palavras-chave: Microbiology; Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/4508/version/1

A similarity criterion for forest growth curves
Provedor de dados: 17
Autores: Georgii A. Alexandrov; Georgy S. Golitsyn.
Comparison of forest growth curves has led many to the conclusion that there is a similarity between forest stands growing in different conditions. Here we treat the same subject from the viewpoint of similarity theory. Our goal is to form a dimensionless ratio of biophysical entities that could parameterize the diversity of forest growth curves. (Such ratios are called similarity criteria.)  Pursuing this goal, we focus on the analogy between tree crown growth and atomic explosion. A blast wave is formed when the rate of energy release is much higher than the rate of energy dissipation. The difference between the rates of energy release and dissipation is the essence of this phenomenon. The essential feature of crown growth is the difference between the...
Tipo: Manuscript
Palavras-chave: Ecology; Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/6561/version/1

Age and growth of Zapteryx brevirostris (Elasmobranchii: Rhinobatidae) in southern Brazil
Provedor de dados: 83
Autores: Carmo,Wanessa P. D.; Fávaro,Luís Fernando; Coelho,Rui.
ABSTRACT Age and growth studies are fundamental to successful fisheries management. Zapteryx brevirostris (Müller &amp; Henle, 1841) is distributed off the Brazilian continental shelf and this species is assessed as “Vulnerable” in the Red List of the International Union for the Conservation of Nature (IUCN). Thus, the objective of this study was to present previously unknown information about the age and growth of Z. brevirostris that can be used for its management, conservation, and fisheries. A total of 162 specimens were sampled, with total lengths (TL) varying between 35.7 cm and 56 cm. The vertebrae were embedded in resin, sectioned in cuts with 0.5 mm thickness and the growth bands of the vertebrae were read under a light microscope. In the studied...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Back-calculation; Conservation; Growth rate; K value; Von Bertalanffy curves (VBGF).
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000100210

Predicting size at first sexual maturity from length/weight relationship: a case study with an Amazonian catfish
Provedor de dados: 83
Autores: Freitas,Tiago Magalhães da Silva; Almeida,Vitor Hudson da Consolação; Montag,Luciano Fogaça de Assis; Fontoura,Nelson Ferreira.
ABSTRACT Relationship between length and weight (LWR) is used to describe aspects concerning the life cycle of fish, but does not considers possible changes during the lifetime mainly due to the sexual maturation. Thus, this study aims to identify the size at first maturity of Auchenipterichthys longimanus (Siluriformes: Auchenipteridae) and infer if the reproductive engagement could change growth pattern, concerning the LWR. Estimates of the size at first maturity (L  50 ) were made by visual identification of gonadal development and through the gonadosomatic index (G  SI ). L  50 was estimated as 12.5 cm for males and 13.0 cm for females when applied visual identification of gonads development. L  50 estimates increased to 13.05 cm for males and 13.7 cm...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonia; Auchenipteridae; Fish reproduction; Growth pattern; Sexual maturity.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000400203

Inhibitory effect of apicidin on in vitro and in vivo growth of Babesia parasites
Provedor de dados: 19
Autores: Munkhjargal, T; Aboulaila, M.R.A; Sivakumar, T; Yokoyama, N; Igarashi, I; 横山, 直明; 五十嵐, 郁男.
Apicidin, a histone deacetylase inhibitor, has a broad spectrum of anti-protozoal activities against apicomplexan parasites. In the present study, we evaluated the inhibitory effect of apicidin on the asexual growth of bovine Babesia parasites (B. bovis and B. bigemina) in vitro, as well as on the in vivo growth of B. microti in mice. The growth of B. bovis and B. bigemina was significantly inhibited in the presence of 3 ng/ml apicidin. Complete inhibition of B. bovis and B. bigemina growth was achieved on the fourth and third days, respectively, after treatment with 729 ng/ml apicidin. These parasites failed to grow again even when drug-free medium was substituted. The 50% inhibitory concentrations of apicidin against B. bovis and B. bigemina were...
Palavras-chave: Apicidin; B .bovis; B .bigemina; B. microti; Asexual growth.
Ano: 2009
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2386

A model for eel growth in aquaculture
Provedor de dados: 27
Autores: Houvenaghel, T.; Huet, T.
Growth in eel populations is not centered around the mean. The model described here is designed to take the growth rate variability into account by classifying the population, step by step in time, into size boxes on which grading and grouping occurs. By selecting options, this model allows the fit to other growth conditions and therefore can be adapted to other species. This growth model is the backbone of a predictive model for aquaculture, built up by adding allometric functions related to basic physiological properties.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture Grading Growth Growth rate Prediction Simulation Anguilla anguilla (Linnaeus; 1758).
Ano: 1989
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3176

Effects of Potentised Substances on Growth Kinetics of Saccharomyces cerevisiae and Schizosaccharomyces pombe
Provedor de dados: 21
Autores: Scherr, Claudia; Baumgartner, Stephan; Spranger, Jörg; Simon, Meinhard.
Background: Homeopathic potencies are used as specific remedies in complementary medicine. Since the mode of action is unknown, the presumed specificity is discussed controversially.  Objective: This study investigated the effects of potentised substances on two yeast species, Saccharomyces cerevisiae and Schizosaccharomyces pombe, in a stable and reliable test system with systematic negative controls. Materials and Methods:  Yeast cells were cultivated in either potentised substances or water controls in microplates and their growth kinetics were measured photometrically. Water control runs were performed repeatedly to investigate the stability of the experimental set-up (systematic negative controls). Results: 4 out of 14 screened substances seem to have...
Tipo: Journal paper
Palavras-chave: Systems research and participatory research.
Ano: 2006
URL: http://orgprints.org/10755/1/Scherr%2Detal%2D2006%2Dforsch.komplementaermed.pdf

Maintien des valeurs dans la croissance de la bio. Enseignements du projet HealthyGrowth
Provedor de dados: 21
Autores: Lamine, Claire; Egon, N; Bui, Sibylle.
How do organic initiatives and food chains succeed in maintaining their foundational values along and despite their growth process? This question which appears central in the “conventionnalisation debate” has been tackled by the European project HealthyGrowth (2013-2016, Eranet Core Organic program). In this project, 11 teams from different countries developed and applied to 22 case studies, 5 different perspectives dealing with organization modes and governance, management strategies, communication of values, mediation of values, and resilience in a context of crises and changes. The cross analysis of these case studies, carried out through a multi-perspective approach, made it possible to identify 3 important aspects which allow maintaining values along...
Tipo: Conference paper, poster, etc.
Palavras-chave: Community development Food security; Food quality and human health Markets and trade Consumer issues Policy environments and social economy Produce chain management.
Ano: 2016
URL: http://orgprints.org/30708/1/Lamine_2016_Innovations%20agronomiques.pdf

Novel organic solutions securing future growth
Provedor de dados: 21
Currently the Danish organic fruit &amp; berry production area is 502 ha with the main crop being apples at 282 ha. FruitGrowth will address the main barriers identified by the ‘Working Group report, 2009’, by focussing on robust cultivars in apples, new innovative weeding methods and extending the fruit season &amp; thereby product availability for consumers we will introduce new cultivars &amp; technologies in storage.  We work on short &amp; long time solutions of the key pests &amp; diseases (codling moth, apple sawfly &amp; apple scab in apples), natural beneficial’s in flower strips, &amp; natural compound to control key pest. FruitGrowth includes research, development, demonstration &amp; dissemination of the results to fruit growers. Outcomes are...
Tipo: Project description
Palavras-chave: Food security; Food quality and human health Fruit and berries Breeding; Genetics and propagation Crop health; Quality; Protection Weed management Post harvest management and techniques.
Ano: 2023
URL: http://orgprints.org/19607/1/FruitGrowth.pdf

Importance of growth characteristics for yield of barley in different growing systems: will growth characteristics describe yield differently in different growing systems?
Provedor de dados: 21
Autores: Kristensen, Kristian; Ericson, Lars.
The interest in organic grown cereals has increased the need for variety tests under organic growing systems and/or the knowledge on whether growth characteristics describe yield differently under conventional and organic conditions. This paper is a contribution to that question by examining the relationships between some important growth characteristics in barley trials in both systems in Northern Sweden and in Denmark. Mixed model analyses were used for regressions of growth characteristics (or transformations of those) on yield (and log-transformed yield), allowing the slope to depend on the growing system.  The analyses showed that diseases seemed to have a less negative effect on yield in the organic growing system than in the conventional growing...
Tipo: Journal paper
Palavras-chave: Farming Systems; Crop husbandry.
Ano: 2008
URL: http://orgprints.org/20878/4/20878.pdf

Physiologic parameters of soybean of determinate and indeterminate growth habit subjected to levels of soil moisture
Provedor de dados: 86
Autores: Machado Júnior,Carlos Sebastião; Silva,Cláudio Ricardo da; Sanches,Maria Cristina; Hamawaki,Osvaldo Toshiyuki; Sousa,Larissa Barbosa de.
Abstract: The objective of this work was to evaluate the physiological and production parameters of soybean (Glycine max) cultivars of determinate and indeterminate growth habits, in three levels of soil moisture. Three cultivars of determinate growth habit and three of indeterminate growth, at the beginning of the reproductive stage, were subjected to three levels of soil moisture: control, moisture at field capacity; moderated, 50% of the control level; and severe, 25% of the control level. Leaf gas exchange, xylem-water potential, chlorophyll content, chlorophyll a fluorescence, plant dry matter, and grain yield per plant were evaluated. The cultivars of indeterminate growth habit showed the greatest values for stomatal conductance and CO2 assimilation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Chlorophyll; Fluorescence; Gas exchange.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000600419

Infrared thermometry to schedule irrigation of common bean
Provedor de dados: 86
Autores: Lobo,Francisco de Almeida; Oliva,Marco Antonio; Resende,Morethson; Lopes,Nei Fernandes; Maestri,Moacyr.
The objective of this work was to determine the critical irrigation time for common bean (Phaseolus vulgaris L. cv. Carioca) using infrared thermometry. Five treatments were analyzed. Canopy temperature differences between plants and a well-watered control about 1, 2, 3, 4, and 5±0.5ºC were tested. Physiological variables and plant growth were analyzed to establish the best time to irrigate. There was a significant linear correlation between the index and stomatal resistance, transpiration rate, and leaf water potential. Although significant linear correlation between the index and mean values of total dry matter, absolute growth rate, and leaf area index was found, no correlation was found with other growth index like relative growth rate, net...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Irrigation scheduling; Water use efficiency; Growth rate.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2004000200003

Growth and hematology of pacu subjected to sustained swimming and fed different protein levels
Provedor de dados: 86
Autores: Nunes,Cleujosí da Silva; Moraes,Gilberto; Fabrizzi,Fernando; Hackbarth,Araceli; Arbeláez-Rojas,Gustavo Alberto.
The objective of this work was to evaluate the effect of sustained swimming and dietary protein levels on growth and hematological responses of juvenile pacu (Piaractus mesopotamicus). A completely randomized design was used in a 3x2 factorial arrangement, with three levels of dietary protein (24, 28, and 32% crude protein), two rearing conditions (sustained swimming or motionless water), and 15 replicates. Fish were subjected to sustained swimming at the velocity of two body lengths per second (2 BL s-1), for 45 days. The level of dietary protein and the swimming conditions affected the performance, growth, and hematological profile of pacu. Swimming conditions influenced nutritional factors, increasing daily weight gain, specific growth rate, number of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Piaractus mesopotamicus; Erythropoiesis; Exercise; Growth rate; Weight gain.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013000600010

Floral differentiation and growth rhythm of rhizome buds of the spring ephemeroid plant Adonis amurensis Regel et Radde
Provedor de dados: 85
Autores: Liu,XL; Li,JH; Zhu,JY; Yang,YF.
Spring ephemeroid plants complete their aboveground reproduction and growth during the short growing season, and may go dormant subsequently underground. Little is known about the underground dormancy and biological activities of the plants. In this study, we observed organogenesis and growth rhythm of rhizome buds of Adonis amurensis Regel et Radde, a spring ephemeroid plant from the Changbai Mountains in northeastern China. Our results showed that A. amurensis did not go through summer dormancy, but started producing mixed buds on rhizomes soon after the aboveground parts had died. The buds grew in length and diameter following an exponential model with significantly slower rates in the early organogenesis stages, and faster rates before winter dormancy....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adonis amurensis Regel et Radde; Rhizome bud; Exponential growth; Allometric growth; Ecological dormancy.
Ano: 2016
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572016000200018

LOW DOSES OF FENOXAPROP-P-ETHYL CAUSE HORMESIS IN LITTLESEED CANARYGRASS AND WILD OAT
Provedor de dados: 87
Autores: ABBAS,T.; NADEEM,M.A.; TANVEER,A.; ZOHAIB,A.
ABSTRACT Hormetic effects of herbicides at ultra-low doses have been proved against range of crop species, although available data of herbicides hormesis about the weeds growth is very limited. This study investigates the promotive effect of low doses of fenoxaprop-Pethyl on growth and seed production of littleseed canarygrass and wild oat. Pot experiments were conducted twice in Wire House at Agronomic Research Area, University of Agriculture, Faisalabad, during 2014-15. Seven different concentrations of fenoxaprop-P-ethyl [0, 1, 3, 6, 9, 12 and 15 g a.i. ha-1] were applied as post emergence herbicide at 3-4 leaves stage of the weeds. Results revealed that increase in growth occurred within first two weeks after spraying at fenoxaprop-P-ethyl doses 1, 3...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avena fatua; Fenoxaprop-P-ethyl; Growth stimulation; Phalaris minor; Ultra-low doses.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000300527

WEED COMPETITION WITH SOYBEAN IN NO-TILLAGE AGROFORESTRY AND SOLE-CROP SYSTEMS IN SUBTROPICAL BRAZIL
Provedor de dados: 87
Autores: DEISS,L.; MORAES,A.; PELISSARI,A.; FRANZLUEBBERS,A.J.; NETO,F.S.; PONTES,L.S.; BARRO,R.S.; SZYMCZAK,L.S.
ABSTRACT Weed competition on soybean (Glycine max) growth and yield was expected to be different when managed in an agroforestry system as compared with sole-cropping without trees. Therefore agronomic practices to control weeds might need to be modified in agroforestry systems. We analyzed weed competition effects on soybean growth, grain yield, and yield components at different distances from 4year-old eucalyptus (Eucalyptus benthamii) in an alley cropping system, as well as in a sole-crop system in southern Brazil. Above-ground soybean biomass was collected throughout the growing season and a logistic function was used to model crop growth. Weed above-ground biomass sampled during the soybean cycle, and grain yield and yield components at the end of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eucalyptus benthamii; Fire; Glycine max; Growth analysis; Interference; Integrated crop-livestock system.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100268

Chinese Regional Agricultural Productivity: 1994-2005
Provedor de dados: 31
Autores: Tong,   Haizhi; Fulginiti,   Lilyan E.; Sesmero,   Juan P.
Replaced with revised version of paper 07/24/09.
Tipo: Journal Article
Palavras-chave: TFP growth; Stochastic production frontier; Malmquist index; Provincial TFP.; Productivity Analysis; O4; O5; Q1.
Ano: 2009
URL: http://purl.umn.edu/51784

GROWTH PATTERN, SUSTAINABILITY AND TRADE IN A LAND CONSTRAINED ECONOMY
Provedor de dados: 31
Autores: Irz,   Xavier T.; Roe,   Terry L.
This paper develops a two-sector model of growth where agriculture is considered explicitly.  Key features of the model include: the reliance of agricultural production on a fixed but degrading resource base, the use by the farm sector of industrially produced inputs and differing rates of technological progress in the two sectors.  On the demand side, the low income elasticity for food as well as the life-sustaining function of food consumption are recognized. In this simplified framework, the sustainability of growth can be related to the existence of a steady state reflecting the ability of the economy to feed its population.  This property is used to identify the characteristics within and outside of agriculture conducive to the sustainability of a...
Tipo: Conference Paper or Presentation
Palavras-chave: Sustainability; Agriculture and growth; Dynamic general equilibrium model; International Development; O41; O13; F11.
Ano: 2000
URL: http://purl.umn.edu/21762

Macroeconomic Imbalances in the World Economy
Provedor de dados: 31
Autores: Roe,   Terry L.; Shane,   Mathew; Heerman,   Kari.
This paper explores the emergence of large current account imbalances in a few large countries, the factors behind the emergence, the role of those imbalances in the financial crisis of 2008-09, and the implications of achieving global balance.  Imbalances reflect a country’s net savings and suggest that growth in GDP of a surplus country is partly dependent upon growth in external demand of deficit countries. Although a country can incur a surplus or deficit for ever, we suggest that the increasing surpluses of relatively large and rapidly growing countries is likely to be destabilizing to global growth in the long-run. The adjustment will likely require a surplus country, such as China, to rely more on domestic demand for growth while a deficit country,...
Tipo: Working or Discussion Paper
Palavras-chave: International Relations/Trade.
Ano: 2011
URL: http://purl.umn.edu/109244

An Empirical Analysis of Contribution of Rural County Education to Economic Growth — A Case of Yongchuan Region of Chongqing, China
Provedor de dados: 31
Autores: Jian-yong,   Zhu.
This paper introduces the derived process of the empirical mode that the investment in education has made a good contribution to the economic growth. Based on this point, taking Yongchuan region as an example and depending on the related statistics collected from 1981 to 2008, the paper carries out a study on the direct influences and the spillover that the investment in rural education makes to the economic growth through Feide Mode, that the fitting accuracy of the regression equation is relatively high and each variable coefficient has undergo very detailed significant tests. The study shows that the influence coefficient of investment in education to the economic growth is 0.821. The contribution to the economic growth is comparatively low, less than 1...
Tipo: Journal Article
Palavras-chave: Country rural education; Spillover function; Rural economy; Yongchuan region; China; Agribusiness.
Ano: 2010
URL: http://purl.umn.edu/93235

Productivity Growth and Convergence in Crop, Ruminant and Non-Ruminant Production: Measurement and Forecasts
Provedor de dados: 31
Autores: Ludena,   Carlos E.; Hertel,   Thomas W.; Preckel,   Paul V.; Foster,   Kenneth A.; Nin Pratt,   Alejandro.
There is considerable interest in projections of future productivity growth in agriculture. Whether one is interested in the outlook for global commodity markets, future patterns of international trade, or the interactions between land use, deforestation and ecological diversity, the rate of productivity growth in agriculture is an essential input. Yet solid projections for this variable have proven elusive – particularly on a global basis. This is due, in no small part, to the difficulty in measuring historical productivity growth. The purpose of this paper is to report the latest time series evidence on total factor productivity growth for crops, ruminants and non-ruminant livestock, on a global basis. We then follow with tests for convergence amongst...
Tipo: Conference Paper or Presentation
Palavras-chave: Malmquist index; Productivity; Convergence; Projections; Crops; Livestock; Productivity Analysis; D24; O13; O47; Q10.
Ano: 2006
URL: http://purl.umn.edu/25392

Institutions and Development: A View from Below
Provedor de dados: 31
Autores: Pande,   Rohini; Udry,   Christopher R.
In this paper we argue the case for greater exploitation of synergies between research on specific institutions based on micro-data and the big questions posed by the institutions and growth literature. To date, the macroeconomic literature on institutions and growth has largely relied on cross-country regression evidence. This has provided compelling evidence for a causal link between a cluster of ‘good’ institutions and more rapid long run growth. However, an inability to disentangle the effects of specific institutional channels on growth or to understand the impact of institutional change on growth will limit further progress using a cross-country empirical strategy. We suggest two research programs based on micro-data that have significant potential....
Tipo: Working or Discussion Paper
Palavras-chave: Institutions; Growth; Cross-country regressions; Institutional and Behavioral Economics; International Development; O11; O12; O17; P51.
Ano: 2005
URL: http://purl.umn.edu/28468

Impact of Economic Growth on Income Inequality: A Regional Perspective
Provedor de dados: 31
Autores: Majumdar,   Shibalee; Partridge,   Mark D.
Impact of Economic Growth on Income Inequality:  A Regional Perspective                                 Shibalee Majumdar and Mark Partridge    Egalitarianism refers to the doctrine of the equality of mankind and the desirability of political, economic and social equality. In this paper, we are going to refer to the concept of economic equality. Theory shows that income inequality is a condition that prevails along with economic growth. According to the utilitarian view, income inequality must exist along with economic growth in order to maximize social welfare. This is in sharp contrast to the egalitarian view according to which, all members of the society should have equal access to all economic resources in terms of economic power, wealth and...
Tipo: Preprint
Palavras-chave: Regional development; Income inequality; Spatial relation; Community/Rural/Urban Development.
Ano: 2009
URL: http://purl.umn.edu/49270

PUBLIC SPENDING IN DEVELOPING COUTRIES: TRENDS, DETERMINATION, AND IMPACT
Provedor de dados: 31
Autores: Fan,   Shenggen; Rao,   Neetha.
The objective of this paper is to review trends in government expenditures in the developing world, to analyze the causes of change, and to develop an analytical framework for determining the differential impacts of various government expenditures on economic growth.   Contrary to common belief, it is found that structural adjustment programs increased the size of government spending, but not all sectors received equal treatment. As a share of total government spending, expenditures on agriculture, education, and infrastructure in Africa; on agricultural and health in Asia; and on education and infrastructure in Latin America, all declined as a result of the structural adjustment programs.   The impact of various types of government spending on economic...
Tipo: Working or Discussion Paper
Palavras-chave: Public Economics.
Ano: 2003
URL: http://purl.umn.edu/16080

Agricultural Growth Accounting and Total Factor Productivity in South Asia: A Review and Policy Implications
Provedor de dados: 31
Autores: Kumar,   Praduman; Mittal,   Surabhi; Hossain,   Mahabub.
Productivity growth in agriculture is essential for the development of the sector. This paper has reviewed the developments in agricultural productivity related to the South Asian countries, namely Bangladesh, India, Nepal, Pakistan, and Sri Lanka. The TFP growth and its contribution in production growth have been summarised for South Asia over the past three decades. Crop-specific TFP growth figures have been updated for India by using more recent micro farm level data for three decades. A discussion and synthesis on changes in TFP and its sources of growth for the major crops, major crop systems, crops and livestock sectors for the countries of South Asia have also been presented. Methodological framework for computation of TFP and its growth has also...
Tipo: Journal Article
Palavras-chave: Productivity Analysis.
Ano: 2008
URL: http://purl.umn.edu/47669

Agglomeration and Growth with and without Capital Mobility
Provedor de dados: 31
Autores: Baldwin,   Richard E.; Forslid,   Rikard; Martin,   Philippe; Ottaviano,   Gianmarco I.P.; Robert-Nicoud,   Frederic.
This paper presents a simple framework in which the location and the growth rate of economic activities are endogenous and interact. We show that the nature of the equilibrium and of the relation between growth and location depends fundamentally on whether capital is assumed to be mobile (in which case we interpret it as physical capital) or immobile (human capital). In the first case, with constant returns to scale, growth and location are independent and no divergence or convergence process takes place. We show that newly created firms can relocate to the poor region, even though there is always a higher share of firms in the rich region, if the industry is competitive and if the return to capital is low. With immobile capital, a process of convergence...
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 2001
URL: http://purl.umn.edu/26403

Agricultural Sector and Economic Growth in Tunisia: Evidence from Co-integration and Error Correction Mechanism
Provedor de dados: 31
Autores: Chebbi,   Houssem Eddine; Lachaal,   Lassaad.
For the past two decades, Tunisia has been undertaken important structural reforms, which call in most cases for market and trade liberalization (agricultural structural adjustment program, GATT reforms, free trade area with the European Union). The private-led type of growth strategy with less government intervention has culminated these last years into a more rapid economic growth and openness. Within this context, this paper examines the agricultural sector role into the economic growth and its interactions with the other sectors using time-series co-integration techniques. We use annual data from 1961 to 2005 to estimate a VAR model that includes GDP indices of five sectors in Tunisian economy. Empirical results from this study indicate that in the...
Tipo: Conference Paper or Presentation
Palavras-chave: Co-integration; Economic growth; Agricultural sector; Tunisia; International Development; C22; O13; Q18.
Ano: 2007
URL: http://purl.umn.edu/9416

Government Expenditure and Economic Growth: Evidence from Trivariate Causality Testing
Provedor de dados: 31
Autores: Loizides,   John; Vamvoukas,   George.
This paper seeks to examine if the relative size of government (measured as the share of total expenditure in GNP can be determined to Granger cause the rate of economic growth, or if the rate of economic growth can be determined to Granger cause the relative size of government. For this purpose, we first use a bivariate error correction model within a Granger causality framework, as well as adding unemployment and inflation (separately) as explanatory variables, creating a simple ‘trivariate’ analysis for each of these two variables. The combined analysis of bivariate and trivariate tests offers a rich menu of possible causal patterns. Using data on Greece, UK and Ireland, the analysis shows: i) government size Granger causes economic growth in all...
Tipo: Journal Article
Palavras-chave: Public sector growth; Economic growth; Bivariate and trivariate causality tests; Error correction modeling; H21.
Ano: 2005
URL: http://purl.umn.edu/37515

COMMUNITY-LEVEL DETERMINANTS OF CHILD GROWTH
Provedor de dados: 31
Autores: Paknawin-Mock,   Jeremiah; Jarvis,   Lovell S.; Jahari,   Abas; Husaini,   Madhin; Pollitt,   Ernesto.
Objectives: The paper presents the results of an ecological-economic approach to identifying community-level factors that influence the physical growth of young children. Design: A cross-sectional design was used to obtain both the anthropometry and the ecological-economic data. Setting:  The sites were 24 communities located in a tea plantation near Bandung, West Java, Indonesia. Subjects:  415 children between the ages of 6 and 18 months living in the 24 communities. Methods: Epidemiological and ethnographic methods were used to measure community infrastructure and services related to child growth.  Anthropometry was used to measure child growth. Econometric methods, including probit and ordinary least squares regression, were used to analyze the effect...
Tipo: Working or Discussion Paper
Palavras-chave: Community health services; Child growth; Indonesia; Tea plantations; Health Economics and Policy.
Ano: 2000
URL: http://purl.umn.edu/11996

Growth and Technological Leadership in US Industries: A  Spatial Econometric Analysis at the State Level, 1963–-1997
Provedor de dados: 31
Autores: Pede,   Valerien O.; Florax,   Raymond J.G.M.; de Groot,   Henri L.F.
For several decades, cross-country analyses have dominated the literature on economic growth. Recently, these analyses have been extended to include sectoral variation as well as spatial variation across sub-national regions. This paper investigates economic growth and potential determinants of the process of catch-up to technology leaders for several economic sectors, using data for the lower 48 US states from 1963 through 1997. We analyze the potential influence of factors such as human capital, and geographical distance to the technology leader. A spatially explicit growth model in which technological progress is endogenously determined is used to model productivity growth in nine US industries, ranging from mining to government, and including a...
Tipo: Conference Paper or Presentation
Palavras-chave: Regional economic growth; Convergence; Industry level; Technological leadership; Spatial econometrics; Industrial Organization; C21; I23; O33; R12.
Ano: 2007
URL: http://purl.umn.edu/9691

Agglomeration, Migration and Agricultural Growth: A Regional CGE Analysis for Uganda
Provedor de dados: 31
Autores: Dorosh,   Paul A.; Thurlow,   James.
CGE Analysis; Development Strategy; sub-Saharan Africa;
Tipo: Conference Paper or Presentation
Palavras-chave: Rural-urban linkages; Internal migration; Regional development; Agricultural and Food Policy; Community/Rural/Urban Development; Q18; R13; R23.
Ano: 2009
URL: http://purl.umn.edu/50775

The Impact of CAFTA on Employment, Production and Poverty in Honduras
Provedor de dados: 31
Autores: Morley,   Samuel A.; Nakasone,   Eduardo; Pineiro,   Valeria.
In this paper we develop a dynamic CGE model to examine the impact of CAFTA on production, employment and poverty in Honduras. We model four aspects of the agreement: tariff reductions, quotas, changes in the rules of origin for maquila and more generous treatment of foreign investment. We first show that trade liberalization under CAFTA has a positive effect on growth, employment and poverty but the effect is small. What really matters for Honduras is the assembly (maquila) industry. CAFTA liberalized the rules of origin for imports into this industry. That raises the growth rate of output by 1.4% and reduces poverty by 11% in 2020 relative to what it would otherwise have been. Increasing capital formation through an increase in foreign investment in...
Tipo: Working or Discussion Paper
Palavras-chave: CAFTA; Honduras; Growth; Poverty; CGE model; International Relations/Trade.
Ano: 2008
URL: http://purl.umn.edu/42349

Reexamining Rural Decline: How Changing Rural Classifications and Short Time Frames Affect Perceived Growth
Provedor de dados: 31
Autores: Artz,   Georgeanne M.; Orazem,   Peter F.
Beale codes are an important tool for examining rural urban differences in socioeconomic trends.  However, as population changes, counties’' designations also change over time.  This feature of Beale codes is commonly overlooked by researchers, yet it has important implications for understanding rural growth.  Since the fastest growing counties grow out of their rural status, use of the most recent codes excludes the most successful rural counties.  Average economic performance of the countries remaining rural significantly understates the true performance of rural counties.  This paper illustrates that choice of Beale code can alter conclusions regarding the relative speed of rural and urban growth across a variety of commonly used social and economic...
Tipo: Conference Paper or Presentation
Palavras-chave: Community/Rural/Urban Development.
Ano: 2005
URL: http://purl.umn.edu/19408

FREE TRADE AND ECONOMIC GROWTH RESOURCES OF IRAN AGRICULTURE
Provedor de dados: 31
Autores: Koshteh,   M.H. Karim; Karbasi,   Ali Reza.
Free trading is considered as index of global economy and factor economic growth in many countries.  In this study along with recognition of growth resources, those factors such as surplus value, Labour, capital, energy, government planning and expenditure which playing the main role in economic growth has been identified and analyzed.  Also, international trade index impact along with other effective factors on surplus value are considered and estimated.  The results show that Labour and energy are the most effective inputs on surplus value respectively.  Then supposing that the sector experienced a productive agronomic year and supporting that Iran country was committed to a free trading framework, the relationships between various related variables were...
Tipo: Conference Paper or Presentation
Palavras-chave: Free trading; Agriculture; Investment; Labour; Energy.; International Development; International Relations/Trade.
Ano: 2003
URL: http://purl.umn.edu/25927

Quantitative Analysis of Contribution of Industrial Structure to Economic Growth in Jiangsu Province
Provedor de dados: 31
Autores: Zhu,   Zhi-guo; Shi,   Chang-liang; Zhang,   Guan-kun; Pei,   Yang-shuo; Zhang,   Da-hong.
The industrial structure in Jiangsu Province realizes the transformation from ' secondary industry-primary industry-tertiary industry to " tertiary  industry-secondary industry-primary industry. However, the effectiveness of this model of industry-dominate industrial structure and the role of industrial structure pattern in promoting regional economic growth are yet to be researched. By using shift-share analysis method, we judge the importance of factors of industrial structure in regional economic growth of Jiangsu Province, and point out that factors of industrial structure are not the dominant forces in economic growth of Jiangsu Province; among the contributions of three industries to economic growth of Jiangsu Province, the contribution of the...
Tipo: Article
Palavras-chave: Industry structure; Economy growth; Shift-share analysis; China; Agribusiness.
Ano: 2011
URL: http://purl.umn.edu/119690

Analysing agricultural productivity growth in a framework of institutional quality
Provedor de dados: 31
Autores: Ahmed,   Mirza Nomman; Maas,   Sarah; Schmitz,   P. Michael.
This paper addresses the question whether the institutional environment of transition countries in Eastern Europe affects productivity growth in the agricultural sector. Situated in a neoclassical growth framework, a dynamic panel model for the period 1996-2005 provides evidence that poor institutional quality leads to a slowdown in agricultural productivity growth. Productivity growth is limited by a high degree of corruption, which is of particular importance given that corruption has been proven to be most prevalent in Eastern European countries. Moreover, agricultural productivity in countries where privatisation and transferability of land is restricted is found to grow at a slower rate than countries supporting market-oriented land reforms....
Tipo: Conference Paper or Presentation
Palavras-chave: Eastern Europe; Transition; Productivity growth; Agricultural and Food Policy; Institutional and Behavioral Economics; Political Economy.
Ano: 2010
URL: http://purl.umn.edu/90793

Employment Growth and Income Inequality: Accounting for Spatial and Sectoral Differences
Provedor de dados: 31
Autores: Pede,   Valerien O.; Florax,   Raymond J.G.M.; Partridge,   Mark D.
This paper revisits the inequality-growth relationship accounting for sectoral differences and focusing on US counties. For 8 two-digit industries of the NAICS classification, we estimated a conditional growth model where employment growth depends on regional income inequality and a number of control variables. Spatial econometrics techniques are used to account for spatial dependence. Results indicate that there is no association between employment growth and family income inequality for the Agriculture, Forestry, Fishing and Hunting sector and the Real Estate, Rental and Leasing sector. However, income inequality consistently shows a negative impact on employment growth in the construction sector, and results are mixed for other sectors such as:...
Tipo: Conference Paper or Presentation
Palavras-chave: Employment growth; Inequality; Spatial dependence; Community/Rural/Urban Development; R0; R11; O15; D30.
Ano: 2009
URL: http://purl.umn.edu/49460

CONSERVATION CAPITAL AND SUSTAINABLE ECONOMIC GROWTH
Provedor de dados: 31
Autores: Ramirez,   Donna Theresa J.; Khanna,   Madhu; Zilberman,   David.
This paper develops an endogenous growth model which links pollution to ineffective input-use, which can be reduced through conservation capital investment. It derives the conditions under which individual preferences for environmental quality and private investment in conservation capital can lead to non-decreasing environmental quality and balanced growth in an unregulated and in a regulated regime.  In the absence of regulation, balanced growth can lead to improvement in environmental quality as long as the rate of growth is low. The extent to which the growth rate is low depends upon preference for environmental quality, interest and discount rates, productivity of conservation capital, and price of the polluting input.  Under an emissions tax regime,...
Tipo: Conference Paper or Presentation
Palavras-chave: Environmental Economics and Policy; International Development.
Ano: 2002
URL: http://purl.umn.edu/19846

Consumption Growth and Agricultural Shocks in Rural Madagascar
Provedor de dados: 31
Autores: Thomas,   A.-C.; Gubert,   F.; Frahan,   Bruno Henry de.
The aim of this paper is to evaluate the effect of rainfall and agricultural shocks on consumption growth in Madagascar. We are also interested in the impact of local endowments in infrastructures and social services on consumption growth. To achieve this goal, a micro model of household consumption growth is estimated thanks to household panel data collected by the Reseau des Observatoires Ruraux (ROR) between 1999 and 2004. Additional data sources include the 2001 communes census organized by the Ilo program of Cornell University. Altogether these different data sources make an unusually rich data set, at least when considered with developing country standards. We use panel data fixed effect estimation technique to remove unobserved household and...
Tipo: Conference Paper or Presentation
Palavras-chave: Risks; Growth; Poverty; Food Security and Poverty.
Ano: 2008
URL: http://purl.umn.edu/43610

THE ROLE OF EXPORTS IN ECONOMIC GROWTH WITH REFERENCE TO ETHIOPIAN COUNTRY
Provedor de dados: 31
Autores: Chemeda,   Faye Ensermu.
This study applies the Cobb-Douglas function model to analyze the effects of exports on economic growth in context of Ethiopian economy. To determine the relationship between export and economic growth, an attempt will be made to use econometrics techniques of analysis (co-integration system) by using the RATS software package for the time series data from 1950 to 1986. The lack of capital stock data is overcome by using the ratio of real investment to real gross domestic product (I/Y), in a place of capital stock while lack of labour force data is overcome by using the real gross domestic product per capita. The results suggest that the real export and (I/Y) are co-integrated with real GDP per capita. These results of the findings support the idea that...
Tipo: Conference Paper or Presentation
Palavras-chave: International Development; International Relations/Trade.
Ano: 2001
URL: http://purl.umn.edu/20569

The Impact of HIV on Total Factor Productivity
Provedor de dados: 31
Autores: Alemu,   Zerihun Gudeta; Roe,   Terry L.; Smith,   Rodney B.W.
This study investigates whether HIV prevalence rates impact TFP growth. We construct a panel of data on general macroeconomic indicators and HIV prevalence rates for over 100 countries, for the years 1994 through 2002, and estimate the impact of HIV on TFP growth rates for each country. We find that HIV can have a large negative impact on factor productivity growth in Southern African countries. For example, factor productivity growth in Lesotho falls by up to 23%, and for South Africa factor productivity growth falls by up to 15%. We then investigate the potential impact of the disease on the economic growth of Lesotho and South Africa. This is accomplished by calibrating a single sector, neoclassical model of economic growth with endogenous savings to...
Tipo: Working or Discussion Paper
Palavras-chave: Health Economics and Policy; International Development.
Ano: 2005
URL: http://purl.umn.edu/12976

Empirical Research on the Factors of Chinese City Growth in the Transitional Period
Provedor de dados: 31
Autores: Li,   Ying-jie; Yang,   Yong-chun.
Based on the definition of the concept of city growth, the paper mainly discussed the factors which impact the growth of Chinese cities in the transitional period by selecting the proportion of city construction land area to the area of the city X1（%）, green coverage ratio of the built up area X2（%）, the ratio of personnel involved in the secondary industryX3（%）, the GDP per capita X4（×104）and other 43 indicators, by relying on the relevant data from China Urban Statistical Yearbook（2008）, by applying SPSS statistical software and by applying the Factor Analysis and Regression Analysis. The results show that the factors which affect the city growth have four major groups, namely economic and institutional factors, location factors, environmental factors...
Tipo: Journal Article
Palavras-chave: Transitional period; City growth; Chinese cities; Factors; China; Agribusiness.
Ano: 2010
URL: http://purl.umn.edu/96057

Growth Diagnostics and a Multisector Ramsey Model: The Case of Brazil
Provedor de dados: 31
Autores: Vinyes,   Cristina; Roe,   Terry L.
Disenchantment with the Washington Consensus has led to an emphasis on growth diagnostics. In the case of Brazil, the literature suggests three main factors impeding growth: low domestic savings, a shortage of skilled workers, and lack of investment in the country’s transportation infrastructure. The unique contribution of this study is to show the inter-temporal implications of relaxing these constraints. We fit a multi-sector Ramsey model to Brazilian data, validate its fit to times data, and provide empirical insights into the economy’s structural transformation to long-run equilibrium. Then, the sensitivity of these results to relaxing each of these three constraints is investigated in a manner that yields the same long-run level of well- being....
Tipo: Report
Palavras-chave: Economic growth; Ramsey; Growth diagnostics; International Development; O11; O41; O54; D58.
Ano: 2010
URL: http://purl.umn.edu/56502

Achieving Regional Growth Dynamics in African Agriculture
Provedor de dados: 31
Autores: Abdulai,   Awudu; Diao,   Xinshen; Johnson,   Michael.
This study focuses on public investments and policy reforms for leveraging growth spillovers at the African regional level. A conceptual framework that is built on the endogenous growth theory and the new economic geography is presented first to gain a better understanding of the underlying theory and empirical evidence on regional integration and growth spillovers. In order to demonstrate the potential benefits from greater cross-border technology spillovers in Africa, as well as from trade liberalization and investment in infrastructure, results from ex-ante simulations using partial and general equilibrium models are then presented and discussed. Results indicate that sizeable regional spillover benefits can be obtained by permitting greater crossborder...
Tipo: Working or Discussion Paper
Palavras-chave: Computable General Equilibrium Models C68; Agricultural growth; Agricultural sector; International Development.
Ano: 2005
URL: http://purl.umn.edu/58371

Growth and Human Development: Comparative Latin American Experience
Provedor de dados: 31
Autores: Ranis,   Gustav; Stewart,   Frances.
This paper seeks to examine the interdependence between economic growth (EG) and human development (HD). It is concerned with changes in per capita income and its two-way relationship with the basic societal objective of human development. Regressions across various Latin American countries are run for 1960-92. Country performance is separated into virtuous/vicious cycles or HD/EG lopsidedness. The study makes an attempt to correct the commonly held view that ensuring increases in economic growth automatically leads to advances in human development. Human development has to occur prior to or simultaneous with improvements in economic growth, if a country is to reach a virtuous cycle. The Latin American experience indicates that a balanced approach to...
Tipo: Working or Discussion Paper
Palavras-chave: Human development; Economic growth; Latin America; Labor and Human Capital; O18.
Ano: 2001
URL: http://purl.umn.edu/28376

Projecting Productivity Growth: Lessons from the U.S. Growth Resurgence
Provedor de dados: 31
Autores: Jorgenson,   Dale W.; Ho,   Mun S.; Stiroh,   Kevin J.
This paper analyzes the sources of U.S. labor productivity growth in the post-1995 period and presents projections for both output and labor productivity growth for the next decade. Despite the recent downward revisions to U.S. GDP and software investment, we show that information technology (IT) played a substantial role in the U.S. productivity revival. We then outline a methodology for projecting trend output and productivity growth. Our base-case projection puts the rate of trend productivity growth at 2.21% per year over the next decade with a range of 1.33 - 2.92%, reflecting fundamental uncertainties about the rate of technological progress in IT-production and investment patterns. Our central projection is only slightly below the average growth...
Tipo: Working or Discussion Paper
Palavras-chave: Productivity; Information technology; Productivity Analysis; O4.
Ano: 2002
URL: http://purl.umn.edu/10613

Increase of Residential Electricity Consumption in Urban and Rural China by Province
Provedor de dados: 31
Autores: Honda,   Manabu; Shindo,   Junko; Okamoto,   Kastuo; Kawashima,   Hiroyuki.
We have developed a projection model to investigate the inter-regional and intra-regional urban-rural characteristics of the current residential electricity demand in China. We have specifically focused on residential electricity demand pertaining to three major appliances; refrigerator, color-TVs and air-conditioners for cooling. The model integrates factors such as population and income growth, and urban-rural disparity of individual factors are also reflected. The relationship between income growth and appliance penetration is investigated and future residential electricity demand is projected for urban and rural areas of individual province. We postulated three scenarios i.e. 1) Base Line scenario 2) Rural Growth Scenario 3) Energy EfficiencySc enario...
Tipo: Conference Paper or Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/25519

PROSPECTS FOR GROWTH AND POVERTY REDUCTION IN ZAMBIA, 2001-2015
Provedor de dados: 31
Autores: Lofgren,   Hans; Thurlow,   James; Robinson,   Sherman.
Zambia is one of the poorest countries in Africa. Despite substantial reform during the 1990s, the economy has remained heavily dependent on urban-based mining. Copper's long-standing dominance led to a strong bias against agriculture, which undermined the sector's growth and export potential. Consequently poverty has remained concentrated within marginalized rural areas. Recent volatility in copper exports and growing foreign debt indicate the need for further economic diversification and pro-poor growth. These needs have been clearly identified in the country's Poverty Reduction Strategy Paper (PRSP), which outlines a series of policy objectives aimed at combating HIV/AIDS, reversing the deterioration of education and rural infrastructure, and...
Tipo: Working or Discussion Paper
Palavras-chave: Food Security and Poverty; International Development.
Ano: 2004
URL: http://purl.umn.edu/60181

Energy, Environment and the Sustainability of Economic Development in China
Provedor de dados: 31
Autores: Fang,   Xingming; Hu,   Xiaoping; Wang,   H. Holly.
Whether the high economic growth of China is sustainable is the matter of interest to the public, government and academic circle of China and meanwhile it catches the attention of the world because the development of China has been exerting increasing impact on the world economy.  Since the high economic growth of China has been promoted by heavy and chemical industry (HCI) to a great extent, which resulted in high consumption of energy resource, high consumption of mineral resources and high emission of pollutants (the “triple highness”), the sustainability of high economic growth of China depends on a sustainable growth road for China’s HCI and effective control on the “triple highness”.  We find that the contributing factors of the “triple highness” are...
Tipo: Conference Paper or Presentation
Palavras-chave: Economic growth; Energy; Resource; Pollution; International Development; Resource /Energy Economics and Policy; O10; O11.
Ano: 2008
URL: http://purl.umn.edu/6274

Reexamining Rural Decline: How Changing Rural Classifications and Short Time Frames Affect Perceived Growth
Provedor de dados: 31
Autores: Artz,   Georgeanne M.; Orazem,   Peter F.
Beale codes are an important tool for examining rural urban differences in socioeconomic trends. However, as population changes, counties' designations also change over time. This feature of Beale codes is commonly overlooked by researchers, yet it has important implications for understanding rural growth. Since the fastest growing counties grow out of their rural status, use of the most recent codes excludes the most successful rural counties. Average economic performance of the counties remaining rural significantly understates the true performance of rural counties. This paper illustrates that choice of Beale code can alter conclusions regarding the relative speed of rural and urban growth across a variety of commonly used social and economic...
Tipo: Working or Discussion Paper
Palavras-chave: Community/Rural/Urban Development.
Ano: 2005
URL: http://purl.umn.edu/18222

Potential of grasses and rhizosphere bacteria for bioremediation of diesel-contaminated soils
Provedor de dados: 90
Autores: Mezzari,Melissa Paola; Zimermann,Daniela Mara Hoffmann; Corseuil,Henry Xavier; Nogueira,Alexandre Verzani.
The techniques available for the remediation of environmental accidents involving petroleum hydrocarbons are generally high-cost solutions. A cheaper, practical and ecologically relevant alternative is the association of plants with microorganisms that contribute to the degradation and removal of hydrocarbons from the soil. The growth of three tropical grass species (Brachiaria brizantha, Brachiaria decumbens and Paspalum notatum) and the survival of root-associated bacterial communities was evaluated at different diesel oil concentrations. Seeds of three grass species were germinated in greenhouse and at different doses of diesel (0, 2.5, 5 and 10 g kg-1 soil). Plants were grown for 10 weeks with periodic assessment of germination, growth (fresh and dry...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diesel fuel; Microbial count; Plant growth.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000600038

Effects of fruiting on the growth of Arabica coffee trees as related to carbohydrate and nitrogen status and to nitrate reductase activity
Provedor de dados: 93
Autores: AMARAL,JOSÉ A.T.; DA MATTA,FÁBIO M.; RENA,ALEMAR B.
Active vegetative and reproductive growth in field-grown trees of Coffea arabica L. in Viçosa (20º45’S, 650 m altitude), south-eastern Brazil, occur concurrently. The overall patterns of branch growth and leaf area gain were to a certain extent altered by fruit removal, with growth rates being remarkably greater in de-fruited trees. The content of N-NO3 was not affected by fruiting, whilst that of amino-N was greater in de-fruited than fruiting trees most of the time, but the differences were not large enough to have significantly contributed to the increased growth rates in de-fruited trees. Leaf nitrate reductase activity was greater in plants bearing fruit than in non-bearing ones most of the time; activity was roughly inversely associated with growth....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acids; Ammonium; Coffea arabica; Nitrate; Starch; Sugars; Temperature.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-31312001000100008

Estimation of growth parameters of body weight and body nutrient deposition in males and females of meat- and laying-type quail using the Gompertz model
Provedor de dados: 96
Autores: Grieser,Daiane de Oliveira; Marcato,Simara Márcia; Furlan,Antonio Claudio; Zancanela,Vittor; Vesco,Ana Paula Del; Batista,Eliany; Ton,Ana Paula Silva; Perine,Taynara Prestes.
ABSTRACT The objective of this study was to estimate the growth parameters of body weight and body nutrient deposition in males and females of one meat- (Coturnix coturnix coturnix) and two laying-type quail strains (Coturnix coturnix japonica), designated either yellow or red, using the Gompertz model. A total of 1350 quail from 1 to 42 days of age were used and they were distributed in a completely randomized design, with five replications for each strain. The parameters of body weight and body composition of the quail were analyzed weekly and evaluated using the Gompertz equation; growth rates and body nutrient deposition were evaluated through derivative equations. The three strains evaluated showed differences in their potential, growth rates, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body protein; Development of birds; Maturity rate; Nonlinear model; Weight at maturity.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100504

Sphagnum magellanicum growth and productivity in Chilean anthropogenic peatlands
Provedor de dados: 97
Autores: DÍAZ,MARÍA F; TAPIA,CAROLINA; JIMÉNEZ,PATRICIA; BACIGALUPE,LEONARDO.
Sphagnum peatlands are threatened at a global scale, not only by peat extraction, but also by Sphagnum harvesting. In Chile, dry Sphagnum moss is mainly exported for use as substrate for horticulture and orchids. Although the use of Sphagnum within Chile is limited, there are no data about its productivity and growth. These peatlands have a special microtopography with hummocks, hollows and lawns, which vary the distance of moss to the water table level. In these ecosystems, the water table is almost all year near the surface. We measured cumulative and relative growth rates and productivity during approximately one annual cycle in private Sphagnum peatlands that are being yearly harvested for commercial purposes. We evaluated the relationship between...
Tipo: Journal article
Palavras-chave: Chile; Growth rate; Peatland; Sphagnum moss.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2012000400013

Seasonal growth variation of peach palms cultivated in containers under subtropical conditions
Provedor de dados: 63
Autores: Tucci,Maria Luiza Sant'Anna; Bovi,Marilene Leão Alves; Machado,Eduardo Caruso; Spiering,Sandra Heiden.
Peach palm (Bactris gasipaes Kunth) is grown in the São Paulo State, Brazil, under climate seasonal variation conditions, mainly temperature and rainfal with possible effects on plant physiology. Recently, due to a higher interest in carrying out physiological experiments on the species, there has been a requirement for more controlled experimental conditions. Therefore, with the aim of studying the seasonal variation of peach palm growth for heart-of-palm production, as well as the possibility of growing them until harvest in pots, for future utilization in physiological experiments, this work was carried out in Campinas, SP, Brazil, with 40 spineless peach palms. One year after seed germination, seedlings were transplanted to 80 L plastic pots, spaced 2...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bactris gasipaes; Heart of palm; Growth analysis.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000200006

Growth of Burkholderia sacchari LFM 101 cultivated in glucose, sucrose and glycerol at different temperatures
Provedor de dados: 63
Autores: Nascimento,Valkirea Matos; Silva,Luiziana Ferreira; Gomez,José Gregório Cabrera; Fonseca,Gustavo Graciano.
ABSTRACT Polyhydroxyalkanoates (PHAs) have attracted major industrial interest as alternatives to conventional plastics. They are produced by several bacteria as cytoplasmic inclusions when nutrients are in limited supply. Among the many factors influencing bacterial growth, the effect of temperature on both specific growth rates and growth yields in terms of carbon source intake is of considerable interest. This study aimed to evaluate the influence of the bacterium Burkholderia sacchari LFM 101 on growth and PHA production, using glucose, sucrose or glycerol as a carbon source, at 30 and 35 °C. The results showed that B. sacchari cultured with glucose at 35 °C presented both higher productivity and polymer yield in dried cell mass. There were no...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Polyhydroxyalkanoates (PHAs); Metabolism; Kinetics.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000500429

Growth curve of Atlantoscia floridana (van Name) (Crustacea, Isopoda, Philosciidae) from a Brazilian Restinga Forest
Provedor de dados: 104
Autores: Araujo,Paula Beatriz; Bond-Buckup,Georgina.
The terrestrial isopod Atlantoscia floridana (van Name, 1940) occurs from the U.S.A. (Florida) to Brazil and Argentina. In the southernmost Brazilian State, Rio Grande do Sul, the species is recorded in many localities, in urban and in non-urban areas. The growth curve of Atlantoscia floridana based on field data is presented. The specimens were sampled from April, 2000 to October, 2001 at the Reserva Biológica do Lami (RBL), Rio Grande do Sul. Captured individuals were sexed and had their cephalothorax width measured, with the data analyzed with von Bertalanffy's model. The growth curves for males and females are described, respectively, by the equations: Wt = 1.303 [1 - e-0.00941 (t + 50.37)] and Wt = 1.682 [1 - e-0.00575 (t + 59.13)]. The curves showed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth curve; Oniscidea; Terrestrial isopod; Southern Brazil.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752004000100001

Size at sexual maturity of female crabs Sesarma rectum Randall (Crustacea, Brachyura) and ontogenetic variations in the abdomen relative growth
Provedor de dados: 104
Autores: Leme,Maria H. de A.
The aim of the present study was to ascertain the size at sexual maturity in females of the crab Sesarma rectum Randall, 1840 by comparing gonadal maturity to morphologic maturity (using abdomen-width data). The relative growth of the abdomen was analysed for all growth phases (for each 3-mm carapace width size class), and the slopes of the separate allometric relationships were compared through analysis of covariance (ANCOVA) from log e-transformed data to detect changes in the level of allometry during ontogeny. The physiological size at maturity (gonadal criteria) was determined through a logistic curve, indicating the size at which 50% of females presented mature gonads (M50 = 17.4 mm CW). The highest allometric levels occurred in growth phases 2 and 3...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometric analysis; Gonadal maturity; Grapsoidea; Mangrove crab.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752005000200020

Xylem growth rings and leaf phenological patterns in tree species of a subtropical seasonal forest
Provedor de dados: 39
Autores: Bauer,Danielle; Schmitt,Jairo L.; Oliveira,Juliano M.
ABSTRACT Growth rings have been reported for several tropical species under seasonal precipitation regimes and have often been related to leaf phenology. We investigated growth ring distinctiveness, wood markers, and leaf shedding and flushing patterns of 16 tree species from a subtropical seasonal deciduous forest under abundant and well-distributed rainfall regime in southern Brazil. Distinct growth rings were found in 13 species, 10 of which presented clear anatomical boundaries. Seven species were deciduous, five semideciduous and four perennial. Leaf shedding peaked during winter and spring months for the deciduous species, while it peaked during spring and summer months for the perennial and semideciduous species. Leaf flushing peaked in spring and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dendrochronology; Phenology; Seasonal deciduous forest; Subtropical forest; Tree rings; Wood anatomy.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000400680

Annual tree rings in Piptadenia gonoacantha (Mart.) J.F.Macbr. in a restoration experiment in the Atlantic Forest: potential for dendroecological research
Provedor de dados: 39
Autores: Brandes,Arno Fritz das Neves; Albuquerque,Rafael Perpetuo; Moraes,Luiz Fernando Duarte de; Barros,Cláudia Franca.
ABSTRACT The tree Piptadenia gonoachantha is widely used in forestry and in forest restoration projects, which require methods for evaluating tree growth. Long-term studies are necessary to determine patterns and detect changes in species growth rhythms. Tree ring analysis provides a precise method for determining age and documenting long-term growth trends in tropical tree species. The present study evaluated the periodicity of tree ring formation and radial growth dynamics of P. gonoachantha from a population of known age in the Poço das Antas Biological Reserve. Two radii from six trees were sampled using non-destructive methods. Tree rings were counted and measured to estimate age and to calculate diametric increment. All samples had 16 tree rings,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Dendrochronology; Growth rhythm; Growth rings; Leguminosae; Ombrophilous Dense Forest; Pau-jacaré; Piptadenia gonoacantha; Reforesting; Restoration.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000300383

Vegetative growth of Conilon coffee plants under two water conditions in the Atlantic region of Bahia State, Brazil
Provedor de dados: 1
Autores: Covre, André Monzoli; Partelli, Fábio Luiz; Bonomo, Robson; Braun, Heder; Ronchi, Cláudio Pagotto.
Extreme temperatures and persistent water stress stand out among the main factors that restrict the vegetative growth and productivity of Coffea canephora. The objective of this study was to evaluate the vegetative growth of orthotropic and plagiotropic branches of C. canephora under non-irrigated and irrigated conditions, and their correlation with climatic factors in the Atlantic region of Bahia State, Brazil. The experiment was established with two treatments (non-irrigated and irrigated) in a completely random design with 14 replicates. One orthotropic and four plagiotropic branches were labelled on each plant. During the two-year experimental period, the growth of these branches was evaluated at 14-day intervals. Two harvests were performed to obtain...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea canephora; Water deficit; Temperature; Plagiotropic branches Crescimento vegetativo.
Ano: 2016
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/30627

Primary leaf growth and coleoptile length in maize seedlings
Provedor de dados: 1
Autores: Lopes, Camila Aparecida; Carvalho, Maria Laene Moreira de; Vasconcelos, Michelle Conceição; Ribeiro, Ana Maria Pereira; Santos, Heloísa Oliveira dos.
Evaluation of the physiological potential of maize seeds during the certification process is performed by a germination test. However, some tests show a delay in the growth of aerial seedling organs that does not reflect seed lot behavior in the field. This study aims to investigate the effects of genotype, water, light and temperature on differential primary leaf growth compared to coleoptile length in maize seedlings. Seeds from two simple hybrids and their reciprocal crosses that showed slow primary leaf growth were evaluated according to physiological quality, morphology, histochemistry, and enzymatic expression. There were differences among maize genotypes regarding initial primary leaf growth when compared to the coleoptile, especially when...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciências agrárias; Agronomia; Fitotecnia ea mays L.; Germination test; Lignin; Enzymes. Qualidade de sementes.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/35366

Primary leaf growth and coleoptile length in maize seedlings
Provedor de dados: 1
Autores: Lopes, Camila Aparecida; Carvalho, Maria Laene Moreira de; Vasconcelos, Michelle Conceição; Ribeiro, Ana Maria Pereira; Santos, Heloísa Oliveira dos.
Evaluation of the physiological potential of maize seeds during the certification process is performed by a germination test. However, some tests show a delay in the growth of aerial seedling organs that does not reflect seed lot behavior in the field. This study aims to investigate the effects of genotype, water, light and temperature on differential primary leaf growth compared to coleoptile length in maize seedlings. Seeds from two simple hybrids and their reciprocal crosses that showed slow primary leaf growth were evaluated according to physiological quality, morphology, histochemistry, and enzymatic expression. There were differences among maize genotypes regarding initial primary leaf growth when compared to the coleoptile, especially when...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ea mays L.; Germination test; Lignin; Enzymes.; Qualidade de sementes.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/35366

Water Total Factor Productivity Growth of Rice and Corn Crops Using Data Envelopment Analysis – Malmquist Index (West Timor, Indonesia)
Provedor de dados: 111
Autores: Koehuan, Jonathan; Suharto, Bambang; Djoyowasito, Gunomo; Susanawati, Liliya.
This study aims to estimate staple food water productivity based on crop water use and subsequently aimed to analyze the total factor productivity growth using DEA-MI methods. The secondary panel data from 2000-2015 regarding climate data, main food harvested areas and main food production were applied. The results show that despite higher dependencies on rainwater, staple food production used a small part of the volume. Staple food water productivity showed a fluctuation and positive trends, falling in the range of global estimates but still below the upper value. The single input-single output analysis showed that the mean annual TFP growth of WPPaddy and WPCorn was positive, mainly due to technology change (TEC) rather than the decrease in efficiency...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crop water; Data envelopment analysis; Malmquist index; Water productivity.
Ano: 2020
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5881

Growth of the tropical zoanthid Palythoa caribaeorum (Cnidaria: Anthozoa) on reefs in northeastern Brazil
Provedor de dados: 42
Autores: SILVA,JANINE F.; GOMES,PAULA B.; SANTANA,ERIKA C.; SILVA,JOÃO M.; LIMA,ÉRICA P.; SANTOS,ANDRE M.M.; PÉREZ,CARLOS D.
In Brazilian reefs, zoanthids, especially Palythoa caribaeorum are fundamental for structuring the local benthic community. The objective of this study was to determine the growth rate of P. caribaeorum, and to assess the influence of the site (different beaches), season (dry and wet), location (intertidal or infralittoral zones), and human pressure associated with tourism. For one year we monitored the cover of P. caribaeorum in transects and focused on 20 colonies. We cut off a square (100 cm2) from the central part of the colony and monitored the bare area for four months in each season. The average growth rates varied from 0.015 and 0.021 cm.day-1. The rate was homogeneous in all localities, and there was no influence from colony site, location, or...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth rate; Trampling; Tropical reefs; Zoantharia.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000200985

First record of growth rings for 11 native subtropical anuran species of South America
Provedor de dados: 42
Autores: BRUM,AMANDA J.C.; LOEBENS,LUIZA; SANTOS,MAURÍCIO B. DOS; CECHIN,SONIA Z.
Abstract: Skeletochronology is the most accurate method to estimate a population age structure. The methodology is based on the analysis of secondary bone tissue in order to count growth rings. This study aimed to provide initial data, allowing researchers to further work out in the age of individuals and populations, sampling evidence of the presence of growth rings in 11 native species (representing nine families) of a subtropical region of southern Brazil. Four bone samples of each specimen were used to perform the skeletochronological analysis: the penultimate phalanges of the 3rd and 4th fingers, the humerus, and the femur. The presence of growth rings was confirmed in the periosteal layer of the bones of all analyzed species. In comparison with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone chronology; Frogs; Lines of arrested growth; Southern Brazil.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000700619

Growth and biochemical composition of Chlorella vulgaris in different growth media
Provedor de dados: 42
Autores: CHIA,MATHIAS A.; LOMBARDI,ANA T.; MELãO,MARIA DA GRAÇA G.
The need for clean and low-cost algae production demands for investigations on algal physiological response under different growth conditions. In this research, we investigated the growth, biomass production and biochemical composition of Chlorella vulgaris using semi-continuous cultures employing three growth media (LC Oligo, Chu 10 and WC media). The highest cell density was obtained in LC Oligo, while the lowest in Chu medium. Chlorophyll a, carbohydrate and protein concentrations and yield were highest in Chu and LC Oligo media. Lipid class analysis showed that hydrocarbons (HC), sterol esthers (SE), free fatty acids (FFA), aliphatic alcohols (ALC), acetone mobile polar lipids (AMPL) and phospholipids (PL) concentrations and yields were highest in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbohydrates; Lipid class; Microalgae; Proteins.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401427

6-Gingerol inhibits hair cycle via induction of MMP2 and MMP9 expression
Provedor de dados: 42
Autores: HOU,CHUN; MIAO,YONG; JI,HANG; WANG,SUSHENG; LIANG,GANG; ZHANG,ZHIHUA; HONG,WEIJIN.
ABSTRACT 6-Gingerol is the major active constituent of ginger. In the current study, we aimed to investigate the mechanisms underlying the effects of 6-Gingerol on hair growth. Mice were randomly divided into five groups; after hair depilation (day 0), mice were treated with saline, or different concentrations of 6-Gingerol for 11 days. The histomorphological characteristics of the growing hair follicles were examined after hematoxylin and eosin staining. The results indicated that 6-Gingerol significantly suppressed hair growth compared with that in the control group. And choose the concentration of 6-Gingerol at 1 mg/mL to treated with mice. Moreover, 6-Gingerol (1 mg/mL) significantly reduced hair re-growth ratio, hair follicle number, and hair follicle...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: MMP2; MMP9; 6-Gingerol; Hair growth.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602707

Compatibility of  Azospirillum brasilense and  Pseudomonas  fluorescens in growth promotion of groundnut ( Arachis  hypogea L.)
Provedor de dados: 42
Autores: PRASAD,ANDHARE A.; BABU,SUBRAMANIAN.
ABSTRACT We attempted to study the compatibility among plant beneficial bacteria in the culture level by growing them near in the nutrient agar plates. Among all the bacteria tested, Rhizobium was found to inhibit the growth of other bacteria. From the compatible group of PGPR, we have selected one biofertilizer (Azospirillum brasilense strain TNAU) and one biocontrol agent (Pseudomonas fluorescens strain PF1) for further studies in the pot culture. We have also developed a bioformulation which is talc powder based, for individual bacteria and mixed culture. This formulation was used as seed treatment, soil application, seedling root dip and foliar spray in groundnut crop in vitro germination conditions. A. brasilense was found to enhance the tap root...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Azospirillum brasilense; Groundnut; PGPR; Pseudomonas fluorescens.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301027

Growth curve by Gompertz nonlinear regression model in female and males in tambaqui (Colossoma macropomum)
Provedor de dados: 42
Autores: MELLO,FERNANDA DE; OLIVEIRA,CARLOS A.L.; RIBEIRO,RICARDO P.; RESENDE,EMIKO K.; POVH,JAYME A.; FORNARI,DARCI C.; BARRETO,ROGÉRIO V.; MCMANUS,CONCEPTA; STREIT JR,DANILO.
ABSTRACT Was evaluated the pattern of growth among females and males of tambaqui by Gompertz nonlinear regression model. Five traits of economic importance were measured on 145 animals during the three years, totaling 981 morphometric data analyzed. Different curves were adjusted between males and females for body weight, height and head length and only one curve was adjusted to the width and body length. The asymptotic weight (a) and relative growth rate to maturity (k) were different between sexes in animals with ± 5 kg; slaughter weight practiced by a specific niche market, very profitable. However, there was no difference between males and females up to ± 2 kg; slaughter weight established to supply the bigger consumer market. Females showed weight...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gompertz curve; Body growth; Maximum growth rate; Slaughtered point.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000502309

Surface energy exchange and evapotranspiration from cotton crop under full irrigation conditions in the Rio Grande do Norte State, Brazilian Semi-Arid
Provedor de dados: 53
Autores: Bezerra,Bergson Guedes; Bezerra,José Renato Cortez; Silva,Bernardo Barbosa da; Santos,Carlos Antonio Costa dos.
The main objectives of this study were documenting how energy balance partitioning and ET vary seasonally along each growth season of cotton crop under full irrigation conditions in the Brazilian semiarid. The studied area was located in the Apodi Plateau, which is located on west of Rio Grande do Norte state and is an area with extensive agricultural suitability and semiarid climate. Micrometeorological measurements were taken during cotton growth season on dry seasons of 2008 and 2009 years in a cotton crop field of about 5 ha, and the energy balance components were derived from Bowen Ratio Energy Balance (BREB) method. The obtained results revealed important role of the vegetative growth of cotton crop in the energy balance partitioning. The values of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bowen ratio energy balance; LAI.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052015000100120

Effect of three different types of culture conditions on Spirulina maxima growth
Provedor de dados: 52
Autores: Monteiro,Maria Paula da Costa; Luchese,Rosa Helena; Absher,Theresinha Monteiro.
Growth of Spirulina maxima was studied in three types of culture conditions with four replicates each: 1) manual aeration with natural sunlight; 2) manual aeration with artificial light; and 3) constant aeration with an aquarium compressor and artificial light. After 185 days of incubation, growth declined in the first two treatments, while in the third treatment, higher growth was observed with average optical density of 3.7 against 1.8 and 1.9 in the first and second treatment, respectively. This was probably due to the fact that under constant aeration the salts were suspended avoiding the crystallization what could cause a decrease in the availability of the necessary nutrients for the growth. Also, the constant stirring allowed all the cells to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquarium compressor; Biomass production; Microalgal growth; Spirulina.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000200016

Growth of fresh-water prawn Macrobrachium tenellum (Smith, 1871) juveniles fed isoproteic diets substituting fish meal by soya bean meal
Provedor de dados: 52
Autores: García-Ulloa Gomez,Manuel; López-Aceves,Luis Alberto; Ponce-Palafox,Jesús Trinidad; Rodríguez-González,Hervey; Arredondo-Figueroa,José Luis.
Growth parameters (standard length, weight, specific growth rate and daily weight gain) of prawn Macrobrachium tenellum juveniles fed 40% crude protein isoproteic diets substituting fish meal with soya bean meal at various levels (20, 40, 60, 80 and 100%) were evaluated for 45 days under laboratory conditions. Experimental diets were compared with a 100% fish meal based diet. Total survival was recorded for all the treatments at the end of the experiment. There were no significant differences (p &gt; 0.05) for all the growth parameters among the dietary treatments. The initial mean weight (0.36 ± 0.10 g) increased almost three times (1.00 ± 0.13 g) after 45 days. The final specific growth fluctuated from 1.82% BW/d for the 60% soya bean meal inclusion...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth; Fresh water prawn; Macrobrachium tenellum; Isoproteic diets; Soya bean meal; Aquaculture.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000100008

Growth of the hermit crab Clibanarius vittatus (Bosc, 1802) (Crustacea, Anomura, Diogenidae) at São Vicente, São Paulo, Brazil
Provedor de dados: 52
Autores: Sant’Anna,Bruno Sampaio; Christofoletti,Ronaldo Adriano; Zangrande,Cilene Mariane; Reigada,Alvaro Luis Diogo.
The present study analyzed the growth of males and females of the hermit crab Clibanarius vittatus (Bosc, 1802), at São Vicente, São Paulo, Brazil. Monthly collections were made from May/2001 through April/2003, at the Pescadores Beach in São Vicente. The 2,501 crabs caught were identified and sexed and the carapace shield length (CSL) was measured. For the seasonal growth study, the population was divided into 5mm size classes (CSL) and analyzed by the Bertalanffy method, with the aid of the program Fisat II. The mean sizes of the 703 males and 1,798 females were 8.94±1.80 and 6.61±1.13 mm, respectively. A seasonal growth pattern was observed, with males reaching an asymptotic size (14.92 mm) larger than that of females (13.85 mm). Males began the growth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth; Anomura; Clibanarius; Crustacea; Hermit crab.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000300014

A simplified model for A. Niger FS3 growth during phytase formation in solid State fermentation
Provedor de dados: 52
Autores: Spier,Michele Rigon; Letti,Luiz Alberto Junior; Woiciechowski,Adenise Lorenci; Soccol,Carlos Ricardo.
A simplified model to describe fungal growth during citric pulp fermentation for phytase production was described for the first time. Experimental data for biomass growth were adjusted to classical mathematical growth models (Monod and Logistic). The Monod model predictions showed good agreement with the experimental results for biomass concentration during 96 hours of fermentation. Parameters such as yield of biomass from oxygen (Y X/O), maintenance coefficient (m) and specific growth rate (µ) were compared showing a good correlation between the data and the model. An alternative method for biomass determination in this process was developed since a great correlation was found between biomass growth and enzyme formation.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Monod Model; Logistic model; Modelling; Fungal growth; Phytase formation; Citric pulp.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000700020

Sulfated proteoglycans as modulators of neuronal migration and axonal decussation in the developing midbrain
Provedor de dados: 56
Autores: Cavalcante,L.A.; Garcia-Abreu,J.; Mendes,F.A.; Moura Neto,V.; Silva,L.C.F.; Onofre,G.; Weissmüller,G.; Carvalho,S.L.
Proteoglycans are abundant in the developing brain and there is much circumstantial evidence for their roles in directional neuronal movements such as cell body migration and axonal growth. We have developed an in vitro model of astrocyte cultures of the lateral and medial sectors of the embryonic mouse midbrain, that differ in their ability to support neuritic growth of young midbrain neurons, and we have searched for the role of interactive proteins and proteoglycans in this model. Neurite production in co-cultures reveals that, irrespective of the previous location of neurons in the midbrain, medial astrocytes exert an inhibitory or nonpermissive effect on neuritic growth that is correlated to a higher content of both heparan and chondroitin sulfates...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Astrocytes; Axonal growth; Chondroitin sulfate; Heparan sulfate; Midline; Midbrain.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000800005

Sex-specific compensatory growth in food-deprived Nile tilapia
Provedor de dados: 56
Autores: Barreto,R.E.; Moreira,P.S.A.; Carvalho,R.F.
Female Nile tilapia incubate fertilized eggs in their mouth until they are released as alevins. Consequently, the female may not eat during this period. Thus, it would be expected that female Nile tilapia are more adapted to recovering from fasting than males, which do not display this behavior. To test this hypothesis we conducted an experiment with two groups of fish consisting of 7 males and 7 females each, with one fish per aquarium. The experiment was divided into three phases involving adjustment of the animals to experimental aquaria (0-15th day), fasting (16th-27th day), and refeeding (27th-42nd day). Compensatory growth performance was assessed by specific growth rate, weight, food conversion efficiency and food intake. Food conversion efficiency...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Compensatory growth; Fasting; Sex-related growth; Mouthbrooding fish; Nile tilapia; Oreochromis niloticus.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000400009

Exploitation of trichoderma species on the growth of Pythium Aphanidermatum in Chilli
Provedor de dados: 58
Autores: Muthukumar,A.; Eswaran,A.; Sanjeevkumas,K.
Damping-off of chilli caused by Pythium aphanidermatum is a major nursery disease in vegetables. In vitro experiments evaluated the effect of eight isolates of Trichoderma species (from chilli rhizosphere) were tested against P. aphanidermatum. All the Trichoderma species had varied antagonistic effects against the pathogen. Among them, TVC3 recorded maximum growth inhibition of P. aphanidermatum and produced more amounts of volatile and non-volatile metabolites. The culture filtrate of the Trichoderma isolate TVC3 recorded complete inhibition on the mycelial growth of pathogen at 15% concentration. Moreover, chilli seeds treated with culture filtrate of the isolate TVC3 recorded maximum germination percentage, shoot length, root length and vigour index of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capsicum annuum; Trichoderma species; Growth inhibition; Secondary metabolites; Plant growth promotion.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000400047

Digital monitoring of mycelium growth kinetics and vigor of shiitake (Lentinula edodes (Berk.) Pegler) on agar medium
Provedor de dados: 58
Autores: Montini,Renato Mamede de Castro; Passos,José Raimundo de Souza; Eira,Augusto Ferreira da.
The mycelium growth kinetics and vigor of shiitake (Lentinula edodes (Berk.) Pegler) strains LE 96/17, LE 98/51, LE 98/53, and LE 98/56 were studied under different agar medium compositions. The strains were from the mycological collection of the Módulo de Cogumelos, Faculdade de Ciências Agronômicas, Unesp-Botucatu, Brazil. Mycelium fragments from stock cultures were transferred to Petri dishes with Sawdust extract-Dextrose-Agar medium. The area of growth and vigor (density) of the mycelia were daily recorded with a digital camera, during incubation, until the complete colonization of the Petri dish. The images were analyzed by the freeware UTHSCSA ImageTool, v. 2.0, developed by the University of Texas Health Science Center, San Antonio. The kinetics of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lentinula edodes; Shiitake; Substrate; Mycelium growth; Strains.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000100017

Influence of glyphosate in planktonic and biofilm growth of Pseudomonas aeruginosa
Provedor de dados: 58
Autores: Lima,Ilana Schneider; Baumeier,Nicole Carmo; Rosa,Rosimeire Takaki; Campelo,Patrícia Maria Stuelp; Rosa,Edvaldo Antonio Ribeiro.
This study evaluated the impact of different concentrations of glyphosate (Rondup®) on planktonic and biofilm growth of P. aeruginosa. Aerobic and anaerobic cultures of P. aeruginosa ATCC®15442 inoculated in MHB + glyphosate (0.845 ppm, 1.690 ppm, 8.45 ppm, 16.90 ppm, 84.50 ppm, 169 ppm, 845 ppm, and 1690 ppm) and cultured in normoxia and anoxia, following their OD560nm every hour for 24 h. Biofilms of adapted cells were formed in the presence of glyphosate (0.845 to 1690 ppm) in normoxia and anoxia for 36 h. Glyphosate at concentrations higher than 84.5 ppm reduces the cell density of planktonic aerobic cultures (p &lt; 0.05). However, these same concentrations favor the planktonic anaerobic growth (p &lt; 0.05). On the other hand, the herbicide favors a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pseudomonas aeruginosa; Glyphosate; Growth; Biofilm.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000300029

Growth and biopigment accumulation of cyanobacterium Spirulina platensis at different light intensities and temperature
Provedor de dados: 58
Autores: Kumar,Manoj; Kulshreshtha,Jyoti; Singh,Gajendra Pal.
In order to find out optimum culture condition for algal growth, the effect of light irradiance and temperature on growth rate, biomass composition and pigment production of Spirulina platensis were studied in axenic batch cultures. Growth kinetics of cultures showed a wide range of temperature tolerance from 20 ºC to 40 ºC. Maximum growth rate, cell production with maximum accumulation of chlorophyll and phycobilliproteins were found at temperature 35 ºC and 2,000 lux light intensity. But with further increase in temperature and light intensity, reduction in growth rate was observed. Carotenoid content was found maximum at 3,500 lux. Improvement in the carotenoid content with increase in light intensity is an adaptive mechanism of cyanobacterium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spirulina platensis; Growth kinetics; Chlorophyll a; Carotenoid; Phycobiliproteins.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000300034

Growth of Aspergillus ochraceus, A. carbonarius and A. niger on culture media at different water activities and temperatures
Provedor de dados: 58
Autores: Palacios-Cabrera,Héctor; Taniwaki,Marta Hiromi; Hashimoto,Jorge Minoru; Menezes,Hilary Castle de.
The objective of this paper was to determine the influence of three culture media with different water activities, times of incubation and temperatures on the growth of A. ochraceus, A. carbonarius and A. niger. Spores of A. ochraceus, A. carbonarius and A. niger were inoculated onto three culture media: Czapeck Yeast extract Agar (CYA), Dichloran 18% Glycerol Agar (DG18) and Malt Yeast extract 40% Glucose Agar (MY40G). The plates were incubated at five different temperatures (8, 25, 30, 35 and 41ºC). The growth of fungi was evaluated every 24h, measuring the colony diameter (mm). None of the species grew at 8ºC in any culture media. For A. carbonarius, 30ºC was the best temperature for growth while for A. niger temperatures above 30ºC were better in all...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aspergillus ochraceus; Aspergillus carbonarius; Aspergillus niger; Growth measurement; Water activity; Temperature.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822005000100005

Growth, fatty acid profile in major lipid classes and lipid fluidity of Aurantiochytrium mangrovei Sk-02 as a function of growth temperature
Provedor de dados: 58
Autores: Chodchoey,Kanokwan; Verduyn,Cornelis.
Aurantiochytrium mangrovei Sk-02 was grown in a medium containing glucose (40 g/l), yeast extract (10 g/L) and sea salts (15 g/L) at temperatures ranging from 12 to 35°C. The fastest growth (µmax= 0.15 h-1) and highest fatty acid content of 415 mg/g-dry cell weight were found in the cells grown at 30°C. However, the cells grown at 12°C showed the highest percentage of polyunsaturated fatty acid (PUFA) (48.6% of total fatty acid). The percentage of docosahexaenoic acid (DHA) and pentadecanoic acid (C15:0) decreased with an increase in the growth temperature, whereas, palmitic acid (C16:0), stearic acid (C18:0) and DPA (C22:5n6) increased with an increase in the growth temperature. The composition of the major lipid class (%w/w) was slightly affected by the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anisotropy measurement; Aurantiochytrium sp.; Docosahexaenoic acid; Lipid class composition; Membrane fluidity.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000100020

Evaluation of root-knot nematode disease control and plant growth promotion potential of biofertilizer Ning shield on Trichosanthes kirilowii in the field
Provedor de dados: 58
Autores: Jiang,Chun-Hao; Xie,Ping; Li,Ke; Xie,Yue-Sheng; Chen,Liu-Jun; Wang,Jin-Suo; Xu,Quan; Guo,Jian-Hua.
Abstract Biofertilizer Ning shield was composed of different strains of plant growth promotion bacteria. In this study, the plant growth promotion and root-knot nematode disease control potential on Trichosanthes kirilowii in the field were evaluated. The application of Ning shield significantly reduced the diseases severity caused by Meloidogyne incognita, the biocontrol efficacy could reached up to 51.08%. Ning shield could also promote the growth of T. kirilowii in the field by increasing seedling emergence, height and the root weight. The results showed that the Ning shield could enhance the production yield up to 36.26%. Ning shield could also promote the plant growth by increasing the contents of available nitrogen, phosphorus, potassium and organic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trichosanthes kirilowii; Root-knot nematode (RKN); Biofertilizer Ning shield; Biological control; Plant growth promotion.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000200232

Alleviation of salt stress by halotolerant and halophilic plant growth-promoting bacteria in wheat (Triticum aestivum)
Provedor de dados: 58
Autores: Orhan,Furkan.
ABSTRACT In the current study, 18 halotolerant and halophilic bacteria have been investigated for their plant growth promoting abilities in vitro and in a hydroponic culture. The bacterial strains have been investigated for ammonia, indole-3-acetic acid and 1-aminocyclopropane-1-carboxylate-deaminase production, phosphate solubilisation and nitrogen fixation activities. Of the tested bacteria, eight were inoculated with Triticum aestivum in a hydroponic culture. The investigated bacterial strains were found to have different plant-growth promoting activities in vitro. Under salt stress (200 mM NaCl), the investigated bacterial strains significantly increased the root and shoot length and total fresh weight of the plants. The growth rates of the plants...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Halophilic and halotolerant bacteria; Plant growth promoting; Wheat.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000300621

Apoplasm hydrostatic pressure on growth of cylindrical cells
Provedor de dados: 61
Autores: Pessoa,José Dalton Cruz; Calbo,Adonai Gimenes.
According to the model frequently used as reference, plant cell growth occurs only when turgor surpasses a threshold. This model was proposed considering a cylindrical cell of constant wall thickness immerged in a water solution, with viscoelastic behaviour, hydraulic conductivity, variable extensibility, and unidirectional elongation. The author, Lockhart (1965), did not consider the effects of apoplasm hydrostatic potential, a subject treated later by Calbo and Pessoa (1994) who argued that this component of cell potential would interfere with cell growth rate. To evaluate this effect, where possible the same deductive procedures as those employed by Lockhart were used here, which resulted in a set of equivalent equations for cell growth, turgor and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apoplasm; Cell wall; Growth; Lockhart; Model; Plant.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202004000100003

Shoot growth restriction in dry matter partitioning andminituber production of potato plants
Provedor de dados: 65
Autores: Bisognin,Dilson Antônio; Dellai,Jacso.
The aim of this research was to determine the effect of shoot growth restriction in the dry matter partitioning and minituber production of potato plants grown in a closed soilless system. Minitubers of the cultivars 'Macaca' and 'Asterix' were planted in the greenhouse in the density of 100 hills m-2, during autumn and spring growing seasons. Growth restriction levels were gotten by pruning shoots at 10, 20 and 30cm height or without pruning. The growth restriction levels were identified by their respective leaf area index. The experiment was a factorial (cultivars x growth restriction x growing season) in a random design, with four replications. Growth restriction affected the dry matter production of potato plants in both growing seasons and cultivars....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum tuberosum L.; Leaf area; Plant propagation; Cuttings; Tuber seeds.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015001101917

β-mannanase and mannan oligosaccharides in broiler chicken feed
Provedor de dados: 65
Autores: Barros,Victor Ramos Sales Mendes de; Lana,Geraldo Roberto Quintão; Lana,Sandra Roselí Valerio; Lana,Ângela Maria Quintão; Cunha,Fabio Sales Albuquerque; Neto,João Virgínio Emerenciano.
The study aimed to evaluate the use of β-mannanase and mannan oligosaccharides (MOS) to replace growth promoters in broiler diets. Four hundred male Cobb broiler chicks were used, with initial weight of 45±1g, distributed in a completely randomized design with five treatments and eight repetitions of ten birds. The treatments were: basal feed; basal feed without growth promoter; basal feed without growth promoter + β-mannanase; basal feed without growth promoter + MOS; and basal feed without growth promoter + β-mannanase + MOS. The feed intake of the birds increased in response to dietary treatments compared to basal diet during the period 1-21 days of age. A higher weight gain and improved feed conversion was found at 42 days of age among birds that had...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chickens; Economic efficiency; Exogenous enzymes.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000100111

Growth in weight and of some tissues in the bullfrog: fitting nonlinear models during the fattening phase
Provedor de dados: 64
Autores: Pereira,Marcelo Maia; Mansano,Cleber Fernando Menegasso; Silva,Edney Pereira da; Stéfani,Marta Verardino De.
Knowledge of the growth of animals is important so that zootechnical activity can be more accurate and sustainable. The objective of this study was to describe the live weight, development of liver tissue and fat body, leg growth, and cumulative food intake of bullfrogs during the fattening phase using nonlinear models. A total of 2,375 bullfrog froglets with an initial weight of 7.03 ± 0.16 g were housed in five fattening pens (12 m²). Ten samplings were performed at intervals of 14 days to obtain the variables studied. These data were used to estimate the parameters of Gompertz and logistic models as a function of time. The estimated values of weight (Wm) and food intake (FIm) at maturity and time when the growth rate is maximum (t*) were closer to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Frog farming; Growth curves; Growth rate; Logistic model.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000600009

Non-linear growth models for bullfrog tadpoles
Provedor de dados: 64
Autores: Mansano,Cleber Fernando Menegasso; Stéfani,Marta Verardino De; Pereira,Marcelo Maia; Macente,Beatrice Ingrid.
Describing animal growth rate using non-linear models allows a detailed evaluation of growth behavior. Four non-linear models were used to fit weight gain and total length data of bullfrog (Lithobates catesbeianus) tadpoles, as follows: Gompertz, Y = A exp (-exp (-b (t-T))); Von Bertalanffy, Y = A (1 - K exp (-B t))³; Logistic, Y = A (1+ K exp (-B t))-1 and Brody, Y=A (1 - K exp (-B t)). We used 3,240 tadpoles, with average initial weight 0.044 g and average total length 12.79 mm, stage 25 Gosner. The measurements were conducted every ten days on 10% of the animals in every tank. The criteria used to select the model that best described the growth curve were: Residual Mean Square (RMS); determination coefficient (R²); residual graphical analysis; residual...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Frog farm; Growth curve; Lithobates catesbeianus.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542012000400010

Aging and growth parameter from the Piaractus mesopotamicus (pacu) from the Cuiabá river, Mato Grosso, Brazil
Provedor de dados: 76
Autores: Ambrosio,Angela M.; Balbi,Thiago J.; Francisco,Talitha M.; Gomes,Luiz C.; Zuliani,Marina S.; Okada,Edson K.
This study has aims to determine the age and to estimate the growth parameters using scales of the species. Individuals of Piaractus mesopotamicus (Holmberg, 1887) used in this study were captured in the commercial fishery conducted in the region, along the year 2006. The model selected to express the growth of the species was the von Bertalanffy Sl= Sl∞*[1-exp-k(t-to)]. To determine if scales are suitable for studying the growth of pacu, we analyzed the relation between standard length (Sl) and the radius of the scales through linear regression. The period of annuli formation was determined analyzing the variations in the marginal increment and evaluating the consistency of the readings through the analysis of the coefficient of variations (CVs) for the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth rings; Scales; Von Bertalanffy model; Ford-Walford.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212014000400004

Correlation between perkinsosis and growth in clams Ruditapes spp.
Provedor de dados: 5
Autores: Dang, Cecile; De Montaudouin, Xavier; Binias, Cindy; Salvo, Flora; Caill-milly, Nathalie; Bald, Juan; Soudant, Philippe.
Perkinsosis is one of the most widespread diseases affecting commercially important species of molluscs globally. We examined the impact of Perkinsus spp. on shell growth at the individual scale in 2 clam species: Ruditapes decussatus from Mundaka Estuary (Spain) and R. philippinarum from Arcachon Bay (France). At Arcachon, 2 contrasting sites in terms of environment and Perkinsus olseni presence were chosen: Arguin (disease-free) and Ile aux Oiseaux (infected site). We monitored the dynamics of perkinsosis over the course of the experiment at Mundaka and Ile aux Oiseaux. Prevalences were high (&gt;70%), and intensities were around 10(5) cells g(-1) wet gills at Ile aux Oiseaux, and 10(6) cells g(-1) at Mundaka. No significant differences in prevalence or...
Tipo: Text
Palavras-chave: Clams; Perkinsus spp.; Perkinsus olseni; Ruditapes philippinarum; Ruditapes decussatus; Growth.
Ano: 2013
URL: https://archimer.ifremer.fr/doc/00166/27733/25951.pdf

Influence of riverine input on the growth of Glycymeris glycymeris in the Bay of Brest, North-West France
Provedor de dados: 5
Autores: Featherstone, Amy M.; Butler, Paul G.; Peharda, Melita; Chauvaud, Laurent; Thebault, Julien.
A crossdated, replicated, chronology of 114 years (1901-2014) was developed from internal growth increments in the shells of Glycymeris glycymeris samples collected monthly from the Bay of Brest, France. Bivalve sampling was undertaken between 2014 and 2015 using a dredge. In total 401 live specimens and 243 articulated paired valves from dead specimens were collected, of which 38 individuals were used to build the chronology. Chronology strength, assessed as the Expressed Population Signal, was above 0.7 throughout, falling below the generally accepted threshold of 0.85 before 1975 because of reduced sample depth. Significant positive correlations were identified between the shell growth and the annual averages of rainfall (1975-2008; r = 0.34) and inflow...
Tipo: Text
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00420/53103/61588.pdf

Influence of parentage upon growth in Ostrea edulis: evidence for inbreeding depression
Provedor de dados: 5
Autores: Naciri-graven, Y; Launey, Sophie; Lebayon, N; Gerard, Andre; Baud, Jean-pierre.
Genetic variability for growth was analysed in three populations of Ostrea edulis, selected for resistance to the protozoan parasite Bonamia ostreae. This study was undertaken first to determine the potential for selection for growth in populations that have never been selected for this character, and second to estimate heterosis versus inbreeding depression. Growth was monitored in culture for 10 months. The selected populations (namely S85-G3, S89I-G2 and S89W-G2), their crossbred population and a control population were composed of full-sib families whose parents were already genotyped using five microsatellite markers. This genotyping allowed the estimation of genetic relatedness among pairs of parents. The parents' relatedness was then correlated with...
Tipo: Text
Ano: 2000
URL: http://archimer.ifremer.fr/doc/2000/publication-2719.pdf

Growth of the Pacific oyster (Crassostrea gigas) in a high-turbidity environment: Comparison of model simulations based on scope for growth and dynamic energy budgets
Provedor de dados: 5
Autores: Barille, Laurent; Lerouxel, Astrid; Dutertre, Mickael; Haure, Joel; Barille, Anne-laure; Pouvreau, Stephane; Alunno-bruscia, Marianne.
We compared growth simulations by dynamic energy budget (DEB) and scope for growth (SFG) models of the Pacific oyster Crassostrea gigas, cultivated in Bourgneuf Bay on the French Atlantic coast. This bay is located at a latitude in the middle of the European range of the species, and is characterized by high concentrations of suspended particulate matter (SPM) and a marked gradient between high-turbidity sites in the north (daily SPM &gt; 500 mg L-1) and intermediate-turbidity sites in the south. The models use two forcing variables: seawater temperature and food density. We tested two indices of food availability: chlorophyll a and microalgal concentrations. In the SFG model, food intake is simulated by a type-II Holling functional response, as in the DEB...
Tipo: Text
Palavras-chave: Oyster; Dynamic Energy Budget model; Scope for growth model; Turbidity.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00043/15433/12783.pdf

Relationships between growth, survival, physiology and behaviour — A multi-criteria approach to Haliotis tuberculata phenotypic traits
Provedor de dados: 5
Autores: Lachambre, Sebastien; Huchette, Sylvain; Day, Rob; Boudry, Pierre; Rio-cabello, Antoine; Fustec, Timothee; Roussel, Sabine.
Abalone growth rate is often identified among important traits to improve through selective breeding. However, the rapid success of some selective breeding plans has sometimes led to negative effects in some aquaculture species due to trade-offs. One of them is the loss of homeostasis of selected animals which results in the inability to resist the stress experienced during the rearing process. In this context, this study aimed to analyze the phenotypic relationships between growth, and physiological and behavioural traits in Haliotis tuberculata under stressful conditions. Eleven traits related to growth, immunity, reproduction and behaviour were recorded under laboratory conditions. A total of 120 adults from wild or farm origin were first monitored...
Tipo: Text
Palavras-chave: Haliotis tuberculata; Growth; Behaviour; Physiology; Multivariate analysis; Phenotyping.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00333/44434/44101.pdf

The effects of growth phase and light intensity on toxin production by Dinophysis acuminata from the northeastern United States
Provedor de dados: 5
Autores: Tong, Mengmeng; Kulis, David M.; Fux, Elie; Smith, Juliette L.; Hess, Philipp; Zhou, Qixing; Anderson, Donald M.
For many years, the study of toxic Dinophysis species was primarily restricted to field populations until it was recently demonstrated that some of these organisms can be mixotrophically cultured in the laboratory with the ciliate prey, Myrionecta rubra. which had previously been fed with cryptophytes of the genus Teleaulax and Geminigera. Here we investigated the influence of growth phase and light intensity on the production of diarrhetic shellfish poisoning (DSP) toxins and pectenotoxins (PTXs) in cultures of Dinophysis acuminata from the northeastern United States. The cell toxin content of okadaic acid (OA), dinophysistoxin-1 (DTX1), pectenotoxin-2 (PTX2), and the okadaic acid diol ester (OA-D8) varied significantly with growth phase under all light...
Tipo: Text
Palavras-chave: Diarrhetic shellfish poisoning (DSP); Dinophysis acuminata; Dinophysistoxin (DTX); Growth phase; Light; Okadaic acid (OA); Pectenotoxins (PTXs).
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00037/14827/12195.pdf

Age, growth and feeding of anchovy (Engraulis encrasicolus L.) in the Bay of Bénisaf (SW Mediterranean , west Algerian coast)
Provedor de dados: 5
Autores: Bacha, Mahmoud; Amara, Rachid; Benmansour, N; Brylinski, Jean-michel; Moali, A; Mahe, Kelig.
Age, growth and feeding of anchovy were studied for the first time from samples collected in the Benisaf Bay (west Algerian coast) during summer (spawning period) and autumn (recruitment period) 2007. Age structure and growth parameters were determined by otolith (sagitta) analyses. The von Bertalanffy growth function fitted to age-length data showed that growth was almost achieved during the first year of life. Significant growth difference was recorded between males and females. Growth parameters were for females (L∞=17,46 cm, k=0,31 per year and t0= -3,46 years) and for male (L∞=16,67 cm, k= 0,35 per year and t0= -3,26 years). The parameters of the otoliths (surface, length, weight and width) were significantly correlated with age and fish length (LT)...
Tipo: Text
Ano: 2009
URL: http://archimer.ifremer.fr/doc/00012/12277/9068.pdf

Influence of bacteria on the response of microalgae to contaminant mixtures
Provedor de dados: 5
Autores: Fouilland, Eric; Gales, Amandine; Beaugelin, Ines; Lanouguere, Elodie; Pringault, Olivier; Leboulanger, Christophe.
When microalgae are exposed to contaminants, the role of associated bacteria within the phycosphere, the microenvironment surrounding algal cells, remains largely unknown. The present study investigated the importance of algae-associated bacteria on the responses of microalgae growth to metallic and organic toxicant exposure. The effects of a polluted sediment elutriate, and of metal or pesticide mixtures at environmentally relevant concentrations (&lt;10 μg L−1) were assessed on the growth of two microalgae strains: Isochrysis galbana, a prymnesiophyte, and Thalassiosira delicatula, a centric diatom. Both cultures were maintained as axenic or bacterized under similar conditions in batch cultures. In axenic conditions, the metal mixture addition at low...
Tipo: Text
Palavras-chave: Microbial interactions; Metallic and pesticide contaminants; Sediments.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00453/56422/58325.pdf

Effects of temperature on the growth of pollack (Pollachius pollachius) juveniles
Provedor de dados: 5
Autores: Person, Jeannine; Buchet, Vincent; Vincent, Benoit; Le Delliou, Herve; Quemener, Loic.
Growth of juvenile pollack was assessed at five constant temperatures (9, 12, 15, 18 and 21 degrees C) in an 84-day trial. Duplicate groups of 75 fish (initial weight 143 +/- 2 g) were held in O-2 saturated water (102-103% saturation) and fed to apparent satiation. Growth increased as temperature increased from 9 degrees C up to a plateau at 12-15 degrees C (NS differences between 12 and 15 degrees C) followed by a decrease from 18 degrees C. No growth occurred at 21 degrees C. For the overall period, specific growth rates were 0.52% and 0.53% day(-1) at 12 and 15 degrees C compared to 0.40% day(-1) at 18 degrees C. Feed intake was maximum at 15-18 degrees C (0.68-0.69% day(-1)) and it was significantly lower at 21 degrees C (0.45% day(-1)). Apparent feed...
Tipo: Text
Palavras-chave: Feed efficiency; Growth; Temperature; Pollack.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1122.pdf

North Sea saithe Pollachius virens growth in relation to food availability, density dependence and temperature
Provedor de dados: 5
Autores: Cormon, Xochitl; Ernande, Bruno; Kempf, Alexander; Vermard, Youen; Marchal, Paul.
North Sea saithe Pollachius virens, a major top predator in the area, supports the fishery economy of several European countries. However, recent stock assessments suggested a decrease in spawning stock biomass along with a decline in saithe mean weight-at-ages. In this context, we investigated North Sea saithe growth characteristics at the population level. First, saithe annual weight increments and age-length relationships were studied. Modelling of saithe age-length relationships was carried out using (1) the traditional von Bertalanffy growth function model, (2) the Verhulst logistic model and (3) an empirical linear model. Second, the effects of environmental factors on saithe growth were investigated. Explanatory environmental factors included food...
Tipo: Text
Palavras-chave: Bottom-up processes; Von Bertalanffy growth function; Logistic growth; Norway pout; Prey availability effects; Density-dependence; Predator-prey interactions; Resource limitation; Competition.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00314/42499/41875.pdf

Allometric growth patterns and development in larvae and juveniles of thick-lipped grey mullet Chelon labrosus reared in mesocosm conditions
Provedor de dados: 5
Autores: Ben Khemis, Ines; Gisbert, Enric; Alcaraz, Carles; Zouiten, Dora; Besbes, Raouf; Zouiten, Amina; Masmoudi, Ahmed Slaheddine; Cahu, Chantal.
Allometric growth and ontogeny were studied in thick-lipped grey mullet Chelon labrosus reared in mesocosms from 1 to 71 day post hatching (dph). Multivariate allometric analysis of morphometric growth distinguished three distinct developmental stanzas separated by two morphometric metamorphosis lengths (L-m1=4.46 +/- 0.06mm; L-m2= 28.56 +/- 1.04mm). Body mass growth also showed three distinct episodes separated by two inflections, correlated with morpho-functional changes. First episode concerned pre-flexion larvae and ended around 4.5mm-L-T (14-dph), coinciding with estimated L-m1. It was distinguished by reduced growth, but intense morphogenesis and differentiation processes. Organogenesis and allometric changes indicated that development priorities...
Tipo: Text
Palavras-chave: Thick-lipped grey mullet; Chelon labrosus; Larval development; Allometric growth; Mesocosm.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00166/27742/26425.pdf

Contrasting shell growth strategies in two Mediterranean bivalves revealed by oxygen-isotope ratio geochemistry: The case of Pecten jacobaeus and Glycymeris pilosa
Provedor de dados: 5
Autores: Peharda, Melita; Thebault, Julien; Markulin, Kresimir; Schone, Bernd R.; Janekovic, Ivica; Chauvaud, Laurent.
High-resolution stable-isotope ratio data (delta O-18, delta O-18) were used to study growth strategies of two bivalve species, Pecten jacobaeus (calcitic shell) and Glycymeris pilosa (aragonitic shell) from the North Adriatic Sea. The principal objectives of this study were to identify the period of the year when the growth line is formed in the shell of two target species, to identify the main growing season of these two species, to identify the environmental drivers of shell growth, and to evaluate the potential applicability of delta O-18 and delta O-18 values for the reconstruction of environmental variability. Samples were collected from the North Adriatic Sea by commercial bean trawl (P. jacobaeus, December 2013 and January 2014, N = 4) and SCUBA...
Tipo: Text
Palavras-chave: Sclerochronology; Mediterranean; Adriatic; Stable-isotope ratio geochemistry; Bivalve shells.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00615/72753/74907.pdf

An integrated Bayesian modeling approach for the growth of Indian Ocean yellowfin tuna
Provedor de dados: 5
Autores: Dortel, Emmanuelle; Sardenne, Fany; Bousquet, N.; Rivot, Etienne; Million, Julien; Le Croizier, Gael; Chassot, Emmanuel.
The Indian Ocean Tuna Tagging Program provided a unique opportunity to collect demographic data on the key commercially targeted tropical tuna species in the Indian Ocean. In this paper, we focused on estimating growth rates for one of these species, yellowfin (Thunnus albacares). Whilst most growth studies only draw on one data source, in this study we use a range of data sources: individual growth rates derived from yellowfin that were tagged and recaptured, direct age estimates obtained through otolith readings, and length-frequency data collected from the purse seine fishery between 2000 and 2010. To combine these data sources, we used an integrated Bayesian model that allowed us to account for the process and measurement errors associated with each...
Tipo: Text
Palavras-chave: Indian Ocean yellowfin; Hierarchical Bayesian model; Tagging; Fisheries.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00254/36513/35080.pdf

Environmental factors controlling biomass development of seagrass meadows of Zostera noltei after a drastic decline (Arcachon Bay, France)
Provedor de dados: 5
Autores: Cognat, Mathis; Ganthy, Florian; Auby, Isabelle; Barraquand, Frederic; Rigouin, Loic; Sottolichio, Aldo.
The relative impact of light, depth, hydrology, hydrodynamics, sediment and nutrients on growth of the seagrass Zostera noltei was investigated in Arcachon Bay, where the extent of seagrass beds has been decreasing for 20 years. A comprehensive multi-parameter survey of 9 sites was conducted monthly over one year. A three-parameter logistic growth model was fitted to biomass data to unravel the relative contributions of environmental factors on seagrass growth. The present study highlights the fact that, in addition to the dominant positive effect of light on plant growth, the hydrological and hydrodynamic parameters were important drivers for Z. noltei growth at the scale of the whole Bay. At the scale of individual sites, other factors such as macroalgal...
Tipo: Text
Palavras-chave: Physical parameters; Light; Hydrodynamics; Adaptation; Statistical growth model.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00451/56229/57789.pdf

Physiological mechanisms underlying a trade-off between growth rate and tolerance of feed deprivation in the European sea bass (Dicentrarchus labrax)
Provedor de dados: 5
Autores: Dupont-prinet, A.; Chatain, Beatrice; Grima, L.; Vandeputte, Marc; Claireaux, Guy; Mckenzie, David.
The specific growth rate (SGR) of a cohort of 2000 tagged juvenile European sea bass was measured in a common tank, during two sequential cycles comprising three-weeks feed deprivation followed by three-weeks ad libitum re-feeding. After correction for initial size at age as fork length, there was a direct correlation between negative SGR (rate of mass loss) during feed deprivation and positive SGR (rate of compensatory growth) during re-feeding (Spearman rank correlation R=0.388, P=0.000002). Following a period of rearing under standard culture conditions, individuals representing 'high growth' phenotypes (GP) and 'high tolerance of feed deprivation' phenotypes (DP) were selected from either end of the SGR spectrum. Static and swimming respirometry could...
Tipo: Text
Palavras-chave: Aerobic scope; Compensatory growth; Specific dynamic action; Specific growth rate; Standard metabolic rate.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00002/11283/8517.pdf

Bacterial Compatibility in Combined Inoculations Enhances the Growth of Potato Seedlings
Provedor de dados: 19
Autores: Santiago, Christine D.; Yagi, Shogo; Ijima, Motoaki; Nashimoto, Tomoya; Sawada, Maki; Ikeda, Seishi; Asano, Kenji; Orikasa, Yoshitake; Ohwada, Takuji.
The compatibility of strains is crucial for formulating bioinoculants that promote plant growth. We herein assessed the compatibility of four potential bioinoculants isolated from potato roots and tubers (Sphingomonas sp. T168, Streptomyces sp. R170, Streptomyces sp. R181, and Methylibium sp. R182) that were co-inoculated in order to improve plant growth. We screened these strains using biochemical tests, and the results obtained showed that R170 had the highest potential as a bioinoculant, as indicated by its significant ability to produce plant growth-promoting substances, its higher tolerance against NaCl (2%) and AlCl3 (0.01%), and growth in a wider range of pH values (5.0-10.0) than the other three strains. Therefore, the compatibility of R170 with...
Palavras-chave: Plant growth-promoting bacteria; Plant tissue localization; Combined inoculation; Bacterial compatibility.
Ano: 2017
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4466

Relation entre la densite des microstries et le rayon de l'otolithe compatible avec le modele de von Bertanlanffy: application a Lutjanus sebae (Cuvier, 1828) aux Seychelles
Provedor de dados: 20
Autores: Chauvelon, P.; Bach, P.
The age study of fishes using daily growth increments DGI observations is made from: 1- either the exhaustive determination of increments, 2- or the calculation of daily growth increments density for different otolith zones between the nucleus and the margin edge of otolith, the width of increments being presumed constant for each zone. To apply the first method, increments may be readable individually from the nucleus to the margin edge of otolith. This is a very time consuming operation. It can cause miscalculation of increments and errors of the age estimation. The second method, called "DGI density method" is based on the decrease of the increment width in relation to the slowing down of the growth phenomena. The more used approach according to this...
Tipo: Report
Palavras-chave: LUTJANUS SEBAE; Age determination; Growth; Methodology; Otolith reading; Age determination; Growth; Methodology; Http://aims.fao.org/aos/agrovoc/c_24110; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_12522.
Ano: 1994
URL: http://hdl.handle.net/1834/1315

Effects of plant growth promoting bacteria (PGPB) on yield, growth and nutrient  contents of organically grown strawberry
Provedor de dados: 21
Autores: Esitken, Ahmet; Yildiz, Hilal E.; Ercisli, Sezai; Donmez, M.Figen; Turan, Metin; Gunes, Adem.
The effects of plant growth promoting bacteria (PGPB) on the fruit yield, growth and nutrient element  content of strawberry cv. Fern were investigated under organic growing conditions between 2006 and  2008. The experimental plot was a completely randomized design with 3 replicates. Three PGPB strains  (Pseudomonas BA-8, Bacillus OSU-142 and Bacillus M-3) were used alone or in combination as biofertilizer  agent in the experiment. Data through 3 years showed that the use of PGPB significantly  increased fruit yield, plant growth and leaf P and Zn contents. Root inoculation of M3 and floral and foliar  spraying of OSU-142 and BA-8 bacteria stimulated plant growth resulting in significant yield increases.  M3 + BA-8, BA-8 + OSU-142, M3, M3 + OSU-142 and...
Tipo: Journal paper
Palavras-chave: Farming Systems; Farm nutrient management.
Ano: 2009
URL: http://orgprints.org/18589/1/%C3%A7ilekscie...pdf

Enzyme activities and growth promotion of  spinach by indole-3-acetic acid-producing  rhizobacteria
Provedor de dados: 21
Autores: Cakmakci, Ramazan; Erat, Mustafa; Oral, B; Erdogan, Ummugulsum; Sahin, Fikrettin.
The objective of this study was to evaluate the effects of twelve plant growth-promoting rhizobacteria (PGPR; Bacillus  mycoides FD07, B. sphaericus RC12, B. pumilus RC19, B. cereus RC18, Variovorax paradoxus RC21, Paenibacillus  polymyxa RC35, Pseudomonas putida RC06, B. megaterium RC07, B. megaterium M-3, B. licheniformis RC08,  B. subtilis RC11, and B. subtilis OSU-142) used as biofertilisers, on various enzyme activities [glucose-6-phosphate  dehydrogenase (G6PD); 6-phosphogluconate dehydrogenase (6PGD); glutathione reductase (GR); and glutathione  S-transferase (GST)] and on seedling growth in spinach (Spinacia oleracea L.). Enhanced plant growth could result  from rhizobacterial production of indole-3-acetic acid (IAA). The highest IAA-producing...
Tipo: Journal paper
Palavras-chave: Soil.
Ano: 2009
URL: http://orgprints.org/31216/1/UE-2.pdf

Can Green Growth Really Work and what are the True (Socio-)Economics of Climate Change?
Provedor de dados: 21
Autores: Hoffmann, Ulrich.
Many economists and policy makers advocate a fundamental shift towards "green growth" as the new, qualitatively-different growth paradigm, largely based on enhanced material/resource/energy efficiency, structural changes towards a service-dominated economy and a switch in the energy mix favouring renewable forms of energy.  "Green growth" may work well in creating new growth impulses with reduced environmental load and facilitating related technological and structural change. But can it also mitigate climate change at the required scale (i.e. significant, absolute and permanent decline of greenhouse gas (GHG) emissions at global level) and pace (i.e. in no more than two decades)?  This paper argues that growth, technological, population-expansion and...
Tipo: Working paper
Palavras-chave: Policy environments and social economy; Environmental aspects.
Ano: 2015
URL: http://orgprints.org/29947/1/hoffmann-2015-UNCTAD-discussionspaper-No222_en.pdf

Growth of the crabgrass species Digitaria ciliaris and Digitaria nuda
Provedor de dados: 87
Autores: Souza,R.C.; Dias,A.C.; Figueiredo,M.R.A.; Obara,F.E.B.; Christoffoleti,P.J.
The aim of this research paper was to compare the growth of D. ciliaris and D. nuda crabgrass species under non-competitive conditions. To this end, two experiments were conducted, one from March - July 2010 and the other from February - June 2011. The experimental design of both trials was completely randomized making a factorial (2 seasons x 2 species crabgrass x 12 evaluation periods) with four replications. Assessments began at 15 days after sowing (DAS), and repeated weekly until 92 DAS. The variables evaluated were total dry matter (roots+leaves+stems), leaf area, leaf number and tiller. The results were submitted to analysis of variance and the absolute growth rate, relative growth rate and leaf area ratio were calculated using the means, which were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth curve; Competitive ability and weed biology.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582012000200010

Growth Stimulating Influence of Foliage Applied Brassica Water Extracts on Morphological and Yield Attributes of Bread Wheat under Different Fertilizer Regimes
Provedor de dados: 87
Autores: SHAHZAD,B.; CHEEMA,S.A.; FAROOQ,M.; CHEEMA,Z.A.; REHMAN,A.; ABBAS,T.
ABSTRACT: This study was conducted to explore the growth stimulating effect of foliage applied brassica water extract on growth and productivity of bread wheat (cv. Punjab 2011) at low and high fertilizer doses. The brassica water extract (5%) and the commercial growth regulator benzyl amino purine (BAP) (5 ppm) were applied alone and in combination at 30 and 45 days after sowing (DAS) under low fertilizer dose (125 kg ha-1 N and 90 kg ha-1 P) and high fertilizer doses (225 kg ha-1 N and 150 kg ha-1 P). Application of the brassica water extract (5%) significantly improved morphological traits such as crop growth rate, leaf elongation, leaf area index, plant height and number of productive tillers under both fertilizer regimes. Similarly, growth regulator...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilizer; Allelopathic water extracts; Plant growth regulators; Brassinolide.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100315

Agro-Exports and the Rural Resource Poor in Latin America: Policy Options for Achieving Broadly Based Growth
Provedor de dados: 31
Autores: Carter,   Michael R.; Barham,   Bradford L.; Mesbah,   Dina; Stanley,   Denise.
Concentrating on fundamental sector-level impacts that shape the nature of agro-export growth, this paper indicates how intrahousehold impacts fit into the analysis. Section 1 is introductory. Section 2 puts forward the conceptual framework needed to understand sectoral impacts of agro-export growth on the rural resource poor, impacts that can be divided into a small-farm adoption effect, a land-access effect, and a labor-absorption effect, all of which are interlinked. Section 3 explores the economic forces that shape the magnitude of the direct (adoption and land access) and indirect (labor absorption) effects of agro-export growth. Its chief message is that the agronomic and economic characteristics of agro-export crops interact with the intrinsic...
Tipo: Working or Discussion Paper
Palavras-chave: Community/Rural/Urban Development; International Relations/Trade.
Ano: 1995
URL: http://purl.umn.edu/12754

DETERMINE THE KEY FACTORS OF THE AGRARIAN ECONOMIC GROWTH IN THE 21TH CENTURY IN HUNGARY
Provedor de dados: 31
Autores: Czarl,   Adrienn.
Economic growth is the top economic and political priority of world leaders. Countries with significant rate of development are higher ranked and serve as models for the developing countries and for the economies in transition.  As an EU member, Hungary needs to close up the gap also in case of the agriculture. After analysing the period 1994-2004 the major factor among supports influencing growth is investment subsidies ahead of current flow supports such as Supports to reduce the cost of agricultural production.  Irrespective of the alternating periods, the gradients established in the statistical analyses and the results from the study of elasticity along the period justify one of the basic tenets of modern economics: in order to achieve the bigger...
Tipo: Journal Article
Palavras-chave: Economic growth; Agriculture; Influence; Subsidy; EU; Agribusiness; Agricultural and Food Policy.
Ano: 2007
URL: http://purl.umn.edu/58901

The role of agriculture in development : implications for Sub-Saharan Africa
Provedor de dados: 31
Autores: Diao,   Xinshen; Hazell,   Peter B.R.; Resnick,   Danielle; Thurlow,   James.
Thinking on development has long held that agricultural growth is an important step toward economic development and transformation. However, the new challenges facing African agriculture in today’s more globalized environment have led some to question whether conventional wisdom about the role of agriculture in development is still applicable to Africa. There is a shift in emphasis toward nonagricultural growth opportunities, which has the potential to reshape the development strategies of many African countries over the coming decades. This research report critically examines conventional wisdom and contemporary skepticism. It also develops a country typology reflecting the diversity of conditions across the subcontinent and then examines the role of...
Tipo: Report
Palavras-chave: Economic aspects; Africa; Sub-Saharan; Farms; Small; Rural development; Poverty; Agriculture and state; International Development.
Ano: 2007
URL: http://purl.umn.edu/37878

The Relationship Between Environmental Efficiency and Manufacturing Firm’s Growth
Provedor de dados: 31
Autores: Cainelli,   Giulio; Mazzanti,   Massimiliano; Zoboli,   Roberto.
This paper investigates the empirical link between emission intensity and economic growth, using a very large data set of 61,219 Italian manufacturing firms over the period 2000-2004. As a measure of lagged environmental performance (efficiency) at firm level we exploit NAMEA sector for CO2, NOx, SOx data over 1990-1999. The paper tests the extent to which (past) environmental efficiency/intensity, which is driven by structural features and firm strategic actions, including responses to policies, influences firms growth. Our results show, first, a typical trade off generally appearing for the three core environmental emissions we analyse: lower environmentally efficiency in the recent past allows higher degrees of freedom to firms and relax the constraints...
Tipo: Working or Discussion Paper
Palavras-chave: Firm growth; Manufacturing; Emission intensity; Economic performance; Environmental performance; Environmental Economics and Policy; C23; D21; O32; Q55.
Ano: 2008
URL: http://purl.umn.edu/46656

Thermal Manipulation Mid-term Broiler Chicken Embryogenesis: Effect on Muscle Growth Factors and Muscle Marker Genes
Provedor de dados: 89
Autores: Al-Zghoul,MB; Al-Natour,MQ; Dalab,AS; Alturki,OI; Althnaian,T; Al-ramadan,SY; Hannon,KM; El-Bahr,SM.
ABSTRACT Thermal manipulation (TM) during broiler chicken embryogenesis has been shown to promote muscle development and growth. However, the molecular bases of promoting broiler muscle development and growth are not fully understood. The aim of this study was to investigate the molecular bases of muscle growth and development in broiler chickens subjected to TM. This included the investigating of the changes in mRNA expression levels of muscle marker genes, namely MyoD, myogenin, paired box transcription factor (Pax7) and proliferating cell nuclear antigen (PCNA), and muscle growth factors namely insulin-like growth factor 1 (IGF-1), myostatin and growth hormone (GH) during embryogenesis and on posthatch days 10 and 28. Fertile Cobb eggs (n=1500) were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Embryogenesis; IGF-1; MyoD; Myostatin; Thermal manipulation.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400607

Cotton response to mepiquat chloride and temperature
Provedor de dados: 63
Autores: Rosolem,Ciro A.; Oosterhuis,Derrick M.; Souza,Fabio S. de.
Gibberellin inhibitor growth regulators are used for cotton (Gossypium hirsutum L.) canopy manipulation to avoid excess growth and yield losses. However, under temperatures below or over the optimum for cotton production the effect of mepiquat chloride (MC) has not always been significant. In this experiment, cotton plants were grown in growth chambers to study the response to MC as affected by temperature and to determine if an increase in dose could overcome the temperature effects. Mepiquat chloride was applied at rates of 0, 15 and 30 g ai ha-1 at the pinhead square stage. Plants were then grown under three temperature regimes: 25/15 °C, 32/22 °C, and 39/29 °C (day/night temperatures) for 51 days. Higher temperatures increased plant height,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant growth regulator; Cotton growth; Photosynthesis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000200004

Growth rate of a terra firme rain forest in Brazilian Amazonia over an eight-year period in response to logging
Provedor de dados: 36
Autores: Carvalho,João Olegário Pereira de; Silva,José Natalino Macedo; Lopes,José do Carmo Alves.
This paper deals with growth rates of trees &gt; 5cm dbh over an eight-year period from 257 species at the Tapajós National Forest. The discussion is centred on the behaviour of the forest after logging. Permanent sample plots were established in 1981 and measured at the first time. The area was logged in 1982. Measurements after logging occurred in 1983, 1987 and 1989. Considering all species together, diameter increment was similar for both intensities of logging until five years after logging. Light-demanding species showed significantly higher growth rates than shade-tolerant species in the logged forest, with greater increment in the heavier treatment intensity. Commercial species also had higher growth rates in the heavier logged area, although those...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonian forest; Tree growth rate; Diameter increment; Forest dynamics; Logging.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672004000200009

Application of date palm leaves compost (DPLC) and plant growth promoting rhizobacteria(PGPR) for controlling faba bean root rot disease in New Valley, Egypt
Provedor de dados: 111
Autores: Abdel-Monaim, Montaser.
Abstract This study was designed to investigate the effect of date palm leaves compost (DPLC) individually and/or in combined with plant growth promoting rhizobacteria(PGPR) for controlling faba bean root rot disease caused by Rhizoctonia solani andFusarium solani under greenhouse and field conditions as well as plant growth and yield parameters. The obtained data indicate thatDPLC at different concentrations significantly decreased root rot incidence either under artificial infection in pot or natural infection in field as well as increased growth and yield parameters during growing season 2013-2014. Date palm leaves compost at 8 ton/feddan recorded the highest protection against root rot disease and gave the highest increased of plant growth and yield...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: M. F. Abdel-Monaim; Manal S. M. Khalil; Sahar H. Abdel-Baset Date palm leaves compost (DPLC); Faba bean; Growth and yield parameters; Nodulation; PGPR; Root rot disease.
Ano: 2018
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4423

ANNUAL SKELETAL EXTENSION OF TWO REEF-BUILDING CORALS FROM THE COLOMBIAN CARIBBEAN SEA
Provedor de dados: 50
Autores: Charry,Henry; Alvarado,Elvira M.; Sánchez,Juan A.
The skeletal growth of the scleractinian corals Diploria labyrinthiformis (Linnaeus 1758) and Montastraea annularis (Ellis and Solander 1786) from Isla Grande (north of Rosario islands), Colombian Caribbean, was determined from annual extension increments revealed by X-radiography of 4-6 mm thick slabs obtained along the axis of maximum growth. The skeletal extension average rate for the last 22 years for D. labyrinthiformis was 3.8 mm year-1 (SE 0.10; N = 87). The correlation between growth of D. labyrinthiformis and hours of sunlight was significantly negative. The annual variances of sunlight enhanced annual statistically significant differences of growth in this species. M. annularis showed an average extension growth of 10.6 mm year -1 (SE 0.32; N =...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth rates; Diploria labyrinthiformis; Montastraea annularis; Caribbean Sea; Colombia; Coral reefs.
Ano: 2004
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612004000100011

Perturbation of EGF-induced MAP kinase activation by TGF-ß1
Provedor de dados: 56
Autores: Wenner,C.E.; Yan,S.
TGF-ß1 regulates both cellular growth and phenotypic plasticity important for maintaining a growth advantage and increased invasiveness in progressively malignant cells. Recent studies indicate that TGF-ß-1 stimulates the conversion of epitheliod to fibroblastoid phenotype which presumably leads to the inactivation of growth-inhibitory effects by TGF-ß1 (Portella et al. (1998) Cell Growth and Differentiation, 9: 393-404). Therefore, the investigation of TGF-ß1 signaling that leads to altered growth and migration may provide novel targets for the prevention of increased cell growth and invasion. Although much attention has been paid to TGF-ß1 responses in epithelial cells, the above studies suggest that examination of signal transduction pathways in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Transforming growth factor; MAP kinase; Cyclin D1.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999000700004

Morphology and mycelial growth rate of Pleurotus spp. strains from the Mexican mixtec region
Provedor de dados: 58
Autores: Guadarrama-Mendoza,P.C.; Valencia del Toro,G.; Ramírez-Carrillo,R.; Robles-Martínez,F.; Yáñez-Fernández,J.; Garín-Aguilar,M.E.; Hernández,C.G.; Bravo-Villa,G.
Two native Pleurotus spp. strains (white LB-050 and pale pink LB-051) were isolated from rotten tree trunks of cazahuate (Ipomoea murucoides) from the Mexican Mixtec Region. Both strains were chemically dedikaryotized to obtain their symmetrical monokaryotic components (neohaplonts). This was achieved employing homogenization time periods from 60 to 65 s, and 3 day incubation at 28 °C in a peptone-glucose solution (PGS). Pairing of compatible neohaplonts resulted in 56 hybrid strains which were classified into the four following hybrid types: (R1-n xB1-n, R1-n xB2-1, R2-n xB1-n and R2-n xB2-1). The mycelial growth of Pleurotus spp. monokaryotic and dikaryotic strains showed differences in texture (cottony or floccose), growth (scarce, regular or abundant),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pleurotus; Mycelial growth; Mycelial morphology; Hybrid strains; Monokaryotization.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000300016

Effects of flooding and shading on growth and gas exchange of Vochysia divergens Pohl (Vochysiaceae) of invasive species in the Brazilian Pantanal
Provedor de dados: 61
Autores: Dalmolin,Ândrea Carla; Dalmagro,Higo José; Lobo,Francisco de Almeida; Antunes Junior,Mario Zortéa; Ortíz,Carmen Eugenia Rogríguez; Vourlitis,George Louis.
Vochysia divergens Pohl (commonly known as cambara) is a pioneer tree species that is native to the Amazon Basin but has been invading the seasonally flooded wetlands of the Brazilian Pantanal, forming monospecific communities. The physiological aspects associated with cambara invasion, including the effects of flooding and shading on growth and leaf gas exchange, are unknown but may shed light on why cambara is able to invade this novel habitat so rapidly. Thus, we conducted a manipulative experiment to quantify the effects of shading and flooding on the growth, gas exchange and leaf nutrient content of V. divergens saplings. Based on previous research we hypothesized that (1) experimental flooding would have no effect on the growth and gas exchange of V....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cambara; Physiological stress; Photosynthesis; Plant ecophysiology; Stomatal conductance; Tropical wetlands.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202012000200001

Effect water activity on in vitro mycelial growth of Neofusicoccum spp. infecting blueberry
Provedor de dados: 118
Autores: Latorre,Bernardo A; Díaz,Gonzalo A; Reed,María P.
Stem canker in blueberries (Vaccinium corymbosum L.) is a disease which is widely distributed around the world and of growing importance in Chile, associated with Neofusicoccum species. The purpose of the present work was to study the effects of water activity (a w) and temperature on mycelial growth in vitro of N. arbuti, N. australe and N. parvum, obtained from blueberries with symptoms of stem canker. According to the results obtained, 25 °C was the optimum temperature for mycelial growth of N. arbuti, N. australe and N. parvum. These species presented minimal growth at 35 °C and none at 0 and 5 °C. The effect of a w on mycelial growth was significant (P&amp;#8804;0.001) and varied with the species of Neofusicoccum and the temperature. At 25 °C, the...
Tipo: Journal article
Palavras-chave: Ecological determinants; Neofusicoccum arbuti; Neofusicoccum australe; Neofusicoccum parvum; Stem canker; Dieback; Vaccinium; Water potential.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000100019

Seasonal pattern of root growth in relation to shoot phenology and soil temperature in sweet cherry trees (Prunus avium): A preliminary study in central Chile
Provedor de dados: 118
Autores: Bonomelli,Claudia; Bonilla,Carlos; Acuña,Edouard; Artacho,Pamela.
The period between flowering and harvest in the sweet cherry (Prunus avium L.) is shorter than most fruit trees; thus, competition for assimilate and nutrients occurs early in the season. To properly supply water and nutrients during this critical period, optimal growth and root development are necessary. To characterize the root growth pattern of cherry trees in relation to shoot growth and phenology, a study was conducted on a 'Bing' cherry orchard on Gisela 6 rootstock at fourth leaf, located in central Chile (34°70' S, 70°43' W). During the 2009-2010 season, the shoot length and fruit diameter were measured on eight trees, and the root length was quantified by installing rhizotrons on two trees. Additionally, a two-tone (black/white) plastic cover was...
Tipo: Journal article
Palavras-chave: Accumulated degree days; Root growth; Root length; Soil temperature; Sweet cherry.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000100010

Простейшие модели роста микроводорослей. II. Квазинепрерывная культура.
Provedor de dados: 13
Autores: Тренкеншу, Р. П.
Предложены модели для описания роста квазинепрерывной культуры микроводорослей. Управление ростом может осуществляться по плотности культуры и времени разбавления. http://biotex.ibss.org.ua/
Tipo: Journal Contribution
Ano: 2005
URL: http://repository.ibss.org.ua/dspace/handle/99011/879

An individual Based Model of anchovy early life stages in the Bay of Biscay: validation of vertical distribution and growth
Provedor de dados: 5
Autores: Huret, Martin; Petitgas, Pierre; Bourriau, Paul; Grellier, Patrick.
The objective of the study is a better understanding of recruitment variability in anchovy population. An Individual Based Model (IBM) is being developed for the full life cycle of anchovy. The early life stages are presented on this poster. The model is tested in a 1D-vertical framework for validation of the vertical distribution of modelled eggs and larvae against in-situ data. The dynamic Energy Budget (DEB) theory is the biological baseline for individual growth. We test its ability to simulate the observed growth curves between years with contrasted temperatures.
Tipo: Text
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00054/16508/14022.pdf

Status of red drum culture in the USA
Provedor de dados: 5
Autores: Arnold, C.
An overview of the methods of producing red drum are discussed. Although red drum culture is new compared to the culture of other species there is much interest in the production both in earthen ponds and in recirculating intensive systems. Various strategies for both methods will be discussed. This includes stocking rates, optimum growth, temperature, salinity and growth rates of red drum (Sciaenops ocellatus).
Tipo: Text
Palavras-chave: Salinity tolerance; Temperature effects; Growth.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1480.pdf

Recherches sur le germon, Thunnus alalunga. Donnees complementaires et nouvelles.
Provedor de dados: 5
Autores: Aloncle, Henri; Delaporte, Francis.
The trophodynamic cycle and growth of the albacore was studied. The different age forms are discussed in relation to various growth hypotheses, in particular the Walford method and the Harding-Chap-man method. Behaviour during capture is also discussed, particularly during troll line fishing, and its reaction to the bait.
Tipo: Text
Palavras-chave: ANE; Europe; Biscay Bay ANE; Atlantic; Azores Thunnus alalunga Growth Trophodynamic cycle Feeding behaviour.
Ano: 1975
URL: http://archimer.ifremer.fr/doc/1975/publication-2020.pdf

Les ages de Niphargus virei (crustace, stygobie)
Provedor de dados: 5
Autores: Turouin-buffiere, M.
The life-span of Niphargus virei is estimated with the length histograms of annual summer samples; it fits in with the data of rare spring distributions and with the growth observed in the laboratory. Increase in body wet weight confirms the low growth rate of this species (maximum: 0.06 mg/day); the mean age of populations changes on account of rainfall, which determines the drift of part of the population out of its natural habitat.
Tipo: Text
Palavras-chave: Niphargus virei; Malacostraca; Mortality; Body size; Longevity; Growth.
Ano: 1987
URL: http://archimer.ifremer.fr/doc/1987/acte-1396.pdf

On the growth rate of the foliicolous lichen Strigula elegans
Provedor de dados: 16
Autores: Wilde-Duyfjes, B.E.E. de.
The diametral growth rate of the foliicolous lichen Strigula elegans (Fée) Müll. Arg., measured under natural conditions in the African tropical rainforest, has been established to amount to (0.7-)3-3-6(-8) mm annually. As compared to the diametral growth rate of lichens from temperate regions, which are reputed to be slow growers, there is no essential difference.
Tipo: Article / Letter to the editor
Ano: 1967
URL: http://www.repository.naturalis.nl/record/531906

Synchronized Mammalian Cells in Culture: A Comparison of Normal and KB Cancer Cell Growth
Provedor de dados: 17
Autores: I. C. Baianu.
Experimentation and tests with cells in culture and cell synchronization or synchrony are important in order to be able to make both reliable and high-sensitivity measurements. This is also very important for mechanistic studies of cell division control, oncogenesis and tumor growth. A comparison is made in this article between the initially synchronized cell growth of rabbit and KB cells in synchronized cultures.
Tipo: Manuscript
Palavras-chave: Biotechnology; Cancer; Chemistry; Developmental Biology; Genetics &amp; Genomics; Molecular Cell Biology; Pharmacology; Bioinformatics.
Ano: 2012
URL: http://precedings.nature.com/documents/7128/version/1

生育中のナガイモの粘弾性の変化
Provedor de dados: 19
Autores: Hironaka, Kazunori; Sawaeda, Kenji; Ishibashi, Kenichi; 弘中, 和憲; 澤枝, 健治; 石橋, 憲一.
The change in the viscoelasticity of the Chinese yam during growth was investigated from mid-August to late November, 1988 in the Tokachi district of Japan. The Chinese yam had peak viscoelasticity around October 24. Its viscosity was correlated with the insoluble solid content, whereas its rigidity was associated with the mucilage content. Viscosity and rigidity values of Chinese yam during maturation reached maximum when the soil temperature at 40 cm decreased to around 11 centigrade.
Palavras-chave: Chinese yam; Growth; Soil temperature; Soil temperature; ナガイモ; 生育; 粘弾性; 地温.
Ano: 1992
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1883

The influence of light on the growth rate of larvae of the brine shrimp, &lt;i&gt;Artemia salina&lt;/i&gt; L.
Provedor de dados: 27
Autores: Sorgeloos, P.
&lt;i&gt;Artemia salina&lt;/i&gt; L. larvae grown in complete darkness showed a significant higher growth rate than those cultured under continuous illumination.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth rate; Larvae; Light effects; Artemia salina.
Ano: 1972
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3458

Effects of fertilizers, mulches and land contours on the growth of sea buckthorn cultivars in organic farming
Provedor de dados: 21
Autores: Heinäaho, Merja; Aniszewski, Tadeusz; Pusenius, Jyrki; Julkunen-Tiitto, Riitta.
The effects of different organic cultivation methods on the growth of two Finnish sea buckthorn was studied for two years.
Tipo: Conference paper, poster, etc.
Palavras-chave: Fruit and berries.
Ano: 2007
URL: http://orgprints.org/10722/1/njf2.pdf

Enhancing Growth and Health of Pinus radiata in New Zealand and Acacia mangium in Malayasia with selected Trichoderma isolates
Provedor de dados: 21
Autores: Hill, Robert A.; Stewart, Alison; Hohmann, Pierre; Braithwaite, Mark.
Oral presentation on enhancing growth and gealth of pinus radiata in New Zealand and Acacia mangium in Malayasia with selected Trichoderma isolates.
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop health; Quality; Protection.
Ano: 2010
URL: http://orgprints.org/30540/1/11th%20Trichoderma%20workshop%20-%20proceedings.PDF

Dynamics and stability in growth of value based food chains: Understanding organizational evolution in organic food systems
Provedor de dados: 21
Autores: Laursen, Klaus Brønd; Noe, Egon.
Dynamics and stability in growth of value based food chains: Understanding organizational evolution in organic food systems
Tipo: Conference paper, poster, etc.
Palavras-chave: Indicators and other value-laden measures; Social aspects; Markets and trade; Policy environments and social economy; Produce chain management.
Ano: 2014
URL: http://orgprints.org/27669/7/27669.pdf

HealthyGrowth - WP2: State of the art report Austria
Provedor de dados: 21
Autores: Furtschegger, Christoph; Schermer, Markus.
Within the HealthyGrowth Project the Austrian State of the Art Report contribution reviews the most current research of studies investigating mid-scale values-based food chains in Austria comprising studies of former projects like COFAMI (Collective Farmers Marketing Initiatives), EuroMARC or OMiARD (Organic Marketing Initiatives and Regional Development). Besides it includes also a description of theoretical and methodological approaches employed in the studies.
Tipo: Report
Palavras-chave: Markets and trade; Produce chain management.
Ano: 2013
URL: http://orgprints.org/25169/7/25169.pdf

HealthyGrowth - WP2: State of the art report Austria
Provedor de dados: 21
Autores: Furtschegger, Christoph; Schermer, Markus.
Within the HealthyGrowth Project the Austrian State of the Art Report contribution reviews the most current research of studies investigating mid-scale values-based food chains in Austria comprising studies of former projects like COFAMI (Collective Farmers Marketing Initiatives), EuroMARC or OMiARD (Organic Marketing Initiatives and Regional Development). Besides it includes also a description of theoretical and methodological approaches employed in the studies.
Tipo: Report
Palavras-chave: Markets and trade; Produce chain management.
Ano: 2013
URL: http://orgprints.org/26077/7/25169.pdf

Influence of intra-row weed growth on crop yield in organic spring cereals
Provedor de dados: 21
Autores: Melander, Bo; McCollough, Margaret.
The importance of intra-row weed growth following inter-row hoeing is quantified.
Tipo: Journal paper
Palavras-chave: Weed management.
Ano: 2019
URL: http://orgprints.org/35162/1/Interference%20of%20intra-row%20weeds_MRM%20Edits%2025.03.2019_BME.pdf

Healthy growth: From niche to volume with integrity and trust. State of the art: National report Norway
Provedor de dados: 21
Autores: Kvam, Gunn-Turid; Bjørkhaug, Hilde.
The working paper gives an overview over organic production, consumption and studies of growth in mid-scale values based food chains in Norway.
Tipo: Working paper
Palavras-chave: Farm economics Social aspects Markets and trade Values; Standards and certification Policy environments and social economy Produce chain management Norway Quality and evaluation of inputs.
Ano: 2013
URL: http://orgprints.org/25043/3/25043.pdf

SUMMER chickens "on herbs"
Provedor de dados: 21
Autores: Steenfeldt, S.; Horsted, K.
In the organic RDD project ’SUMMER’, an experiment with organic broilers with access to a large range area with herbs has been performed. The effect of chicken genotypes with different growth rates and different feeding strategies on the animals’ feed intake, growth, welfare, health and meat quality was investigated.  The results so far indicate that it is necessary to use chicken genotypes with lower growth rates for a better welfare, and the focus should be on the individual genotype and its actual nutrient requirements and utilisation of feed from the range area.
Tipo: Newspaper or magazine article
Palavras-chave: Production systems; Poultry.
Ano: 2013
URL: http://orgprints.org/22871/7/22871.pdf

HealthyGrowth German Case Study: Fact Sheet of Bohlsener Mühle GmbH &amp; Co
Provedor de dados: 21
Autores: Münchhausen, von, Susanne; Häring, Anna Maria; Knickel, Karlheinz.
Fact Sheet, short presentation of HealthyGrowth case study business: Bohlsener Mühle GmbH &amp; Co.
Tipo: Other
Palavras-chave: Farm economics Processing; Packaging and transportation Markets and trade Produce chain management Germany.
Ano: 2015
URL: http://orgprints.org/28702/13/28702.pdf

HealthyGrowth: Dissemination Targeting Stakeholders,  Deliverable 7.2
Provedor de dados: 21
Autores: Münchhausen, von, Susanne; Häring, Anna Maria.
'HealthyGrowth' is a CORE Organic II project. This document is Deliverable 7.2. It shows the dissemination activities targeting stakeholders and practitioners in the organic agri-food industry. The documents shows authors, titles and OrganicEprints reference numbers. All teams of the consortium were responsible for the dissemination of project results to stakeholders in national languages.
Tipo: Other
Palavras-chave: Farm economics Markets and trade Education; Extension and communication Produce chain management.
Ano: 2016
URL: http://orgprints.org/30852/1/Deliverable7.2-Articles-Stakeholders-HG.pdf

HealthyGrowth German Case Study: Fact Sheet of Producer-Consumer-Community Landwege e.G.
Provedor de dados: 21
Autores: Münchhausen, von, Susanne; Häring, Anna Maria; Knickel, Karlheinz.
Fact Sheet, short presentation of HealthyGrowth case study business: Landwege e.G.
Tipo: Other
Palavras-chave: Farm economics Processing; Packaging and transportation Markets and trade Produce chain management Germany.
Ano: 2015
URL: http://orgprints.org/28701/7/28701.pdf

The demand for livestock products in South Africa for 2000, 2010 and 2020: Part I
Provedor de dados: 31
Autores: Nieuwoudt,   W. Lieb.
The demand for livestock products is projected for the next 25 years. Data on expectations regarding the following factors were included (a) population growth, (b) urbanisation, (c) income per capita growth and (d) income elasticities. Data for each population group were included. The model shows significant increases in demand for livestock products especially under assumed high growth scenarios.
Tipo: Journal Article
Palavras-chave: Demand and Price Analysis; Livestock Production/Industries.
Ano: 1998
URL: http://purl.umn.edu/54785

Public Inputs and Endogenous Growth in the Agricultural Sector: a Dynamic Dual Approach
Provedor de dados: 31
Autores: Onofri,   Alejandro; Fulginiti,   Lilyan E.
This paper examines growth in the U.S. agricultural sector under the conditions hypothesized by endogenous growth theory. Public capital and R&amp;D are explicitly considered to capture the effects of public inputs in a model based on dynamic duality theory. Results support some necessary conditions for this hypothesis to be true.
Tipo: Conference Paper or Presentation
Palavras-chave: International Development.
Ano: 2001
URL: http://purl.umn.edu/20438

PUBLIC CAPITAL, R&amp;D, AGRICULTURAL PRODUCTION AND ENDOGENOUS GROWTH
Provedor de dados: 31
Autores: Onofri,   Alejandro; Fulginiti,   Lilyan E.
The paper examines growth in the U.S. agricultural sector under the conditions hypothesized by endogenous growth theory.  Public capital and R&amp;D in agriculture are explicitly considered to capture the effect of public inputs.  Results support some of the necessary conditions for this hypothesis to be true.
Tipo: Conference Paper or Presentation
Palavras-chave: Agricultural and Food Policy; Public Economics.
Ano: 1999
URL: http://purl.umn.edu/21542

ANALYZING LINKAGES BETWEEN NURSERY FARM GROWTH RATES, STRUCTURAL VARIABLES, AND FIRM CHARACTERISTICS
Provedor de dados: 31
Autores: Navajas,   Roberto; Hinson,   Roger A.; Pinel,   Raul A.
Production of ornamental plants is one of agriculture's successes. However, concentration of production and retailing is occurring, bringing additional competitive pressure.  An econometric model is used to explain growth rate using a cross-sectional data set from 2001, self-reported growth rates for nursery firms, and firm and operator characteristics.
Tipo: Conference Paper or Presentation
Palavras-chave: Production Economics.
Ano: 2003
URL: http://purl.umn.edu/35125

Factors Impacting Farm Growth
Provedor de dados: 31
Autores: Villatora,   Mario; Langemeier,   Michael R.
This paper examined the relative importance of farm size, farm type, managerial ability, capital structure, operator age, family size, and off-farm income in explaining farm growth rates.  Farm type, managerial ability, and operator age were significantly related to farm growth rates.
Tipo: Conference Paper or Presentation
Palavras-chave: Farm Management.
Ano: 2005
URL: http://purl.umn.edu/35547

SOCIAL NETWORKS, SOCIAL CAPITAL AND COMMUNITY ECONOMIC GROWTH
Provedor de dados: 31
Autores: Shideler,   David W.; Kraybill,   David S.
We assess empirically whether social capital affects economic growth in selected United States communities. Social network measures, computed from survey data, are used as proxies for social capital. These measures are used in a conditional convergence growth model to explain the variation of per capita income in the communities.
Tipo: Conference Paper or Presentation
Palavras-chave: Community/Rural/Urban Development.
Ano: 2003
URL: http://purl.umn.edu/22174

EFFICIENCY, PRODUCTIVITY AND OUTPUT GROWTH: AN INTER-REGIONAL ANALYSIS OF GREEK AGRICULTURE
Provedor de dados: 31
Autores: Tzouvelekas,   Vangelis; Giannakas,   Konstantinos; Karagiannis,   Giannis.
Output growth decomposition of the Greek olive-oil sector under technical and allocative inefficiencies, economies of scale and technical change, is performed.  The stochastic production frontier model is extended to panel data and FGLS estimation.  Conventional inputs are main source of growth: TFP increased in slow rate during the study period.
Tipo: Conference Paper or Presentation
Palavras-chave: Crop Production/Industries; Industrial Organization.
Ano: 1998
URL: http://purl.umn.edu/20936

Is there a Slowdown in Agricultural Productivity Growth in South America?
Provedor de dados: 31
Autores: Trindade,   Federico J.
Some studies have estimated a slowdown on agricultural productivity growth in the U.S and in some European countries.  This article uses parametric and nonparametric methods to estimate  (TFP) agricultural  productivity growth in 10 South American countries in 1972-2006 with the objective of checking for a potential slowdown in these countries.
Tipo: Conference Paper or Presentation
Palavras-chave: Productivity Analysis.
Ano: 2010
URL: http://purl.umn.edu/61258

REASSESSING PRODUCTIVITY GROWTH IN AFRICAN AGRICULTURE
Provedor de dados: 31
Autores: Chan-Kang,   Connie; Pardey,   Philip G.; Wood,   Stanley; Roseboom,   Johannes; Cremers,   Marleen.
This paper uses a new panel data set to examine sources of growth in African agriculture.  While conventional inputs continue to be the main source of labor productivity growth in Africa, land and labor quality differentials are also significant in explaining observed cross-country productivity patterns.
Tipo: Conference Paper or Presentation
Palavras-chave: Productivity Analysis.
Ano: 1999
URL: http://purl.umn.edu/21600

Agriculture Productivity Growth: Is the Current Trend on the Track to Poverty Reduction?
Provedor de dados: 31
Autores: Valenzuela,   Ernesto; Ivanic,   Maros; Ludena,   Carlos E.; Hertel,   Thomas W.
In this study we evaluate the effect of annual productivity growth in agriculture over the 1991-2001 period on poverty in eleven developing countries. We compare this with the optimal pattern of productivity growth of comparable cost with the sole goal of maximizing poverty reduction. This comparison reveals that regional agricultural development is a viable option in the fight for poverty reduction.
Tipo: Conference Paper or Presentation
Palavras-chave: Food Security and Poverty.
Ano: 2005
URL: http://purl.umn.edu/19152

THE GROWTH IN ORGANIC AGRICULTURE: TEMPORARY SHIFT OR STRUCTURAL CHANGE?
Provedor de dados: 31
Autores: Gardebroek,   Cornelis; Jongeneel,   Roelof A.
This paper investigates the growth in the number of organic producers in the Netherlands. Using Bayesian techniques a logistic growth model explaining the share of organic farms is estimated. Prior information is used to estimate and compare three different models on the future of organic farming.
Tipo: Conference Paper or Presentation
Palavras-chave: Farm Management.
Ano: 2004
URL: http://purl.umn.edu/20074

2002 ANNUAL AGRICULTURAL OUTLOOK
Provedor de dados: 31
Autores: Hilker,   James H.; Alderman,   Nicole.
The global economy is also faltering.  Global economic growth in 2001 was the slowest of any year since 1993, and only a modest rebound is forecast for 2002.  The combination of sluggish world growth and a strong dollar should continue to constrain farm exports in 2002.Three concerns are important as we look ahead business earnings, productivity, and global growth.
Tipo: Working or Discussion Paper
Palavras-chave: Farm Management.
Ano: 2002
URL: http://purl.umn.edu/11676

SUBSIDIES, ENDOGENOUS TECHNICAL EFFICIENCY AND THE MEASUREMENT OF PRODUCTIVITY GROWTH
Provedor de dados: 31
Autores: Lachaal,   Lassaad.
The impacts of program subsidy on productivity growth is investigated in this study Mundlak's concept of endogeneity is applied to technical efficiency and generalized within a dual framework.  Technology is described by an aggregate cost function while technical efficiency is conditional on a vector of state variables.  Empirical evidence from the U.S. dairy sector supports the hypothesis that protectionism, in the form of program subsidy, is the source of considerable technical inefficiencies.
Tipo: Journal Article
Palavras-chave: Dairy sector; Endogenous technical efficiency; Productivity growth; Subsidy; Productivity Analysis.
Ano: 1994
URL: http://purl.umn.edu/15432

Growth Expectations and Decision to Renovate a Golf Course: An Application of a Censored Model with the Simultaneity Test
Provedor de dados: 31
Autores: Bilgic,   Abdulbaki; Florkowski,   Wojciech J.
Golf course renovation and expected business growth were examined. Endogeneity test  on the   renovation decision and a censored expected growth model rejected the hypothesis of simultaneity and decisions were modeled separately. Key determinants for both decisions were golf facility features, but not respondents'’ characteristics.
Tipo: Conference Paper or Presentation
Palavras-chave: Research Methods/ Statistical Methods.
Ano: 2006
URL: http://purl.umn.edu/21446

TESTING THE IMPACT OF CORPORATE FARMING LAWS ON HOG INDUSTRY GROWTH: A PARTIAL ADJUSTMENT APPROACH
Provedor de dados: 31
Autores: Matthey,   Holger; Royer,   Jeffrey S.
This paper analyzes the impact of corporate restrictions on the growth of the Nebraska hog industry.  It utilizes a partial adjustment model to test the hypothesis that the restrictions hamper the development of the state's hog industry.  The results support the argument that the regulations  have slowed the growth of the Nebraska hog industry.
Tipo: Conference Paper or Presentation
Palavras-chave: Agribusiness; Livestock Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/21697

Gas exchange in Annona emarginata (Schltdl.) H. Rainer subjected to salt stress and application of plant growth regulator
Provedor de dados: 22
Autores: Dalanhol, Samanta Jaqueline; Mantoan, Luís Paulo Benetti; Amaro, Amanda Cristina Esteves; Ferreira, Gisela.
The aim of this study was to evaluate the effects of the application of plant growth regulator on gas exchange in A. emarginata seedlings subjected to different NaCl concentrations. We evaluated the gas exchange in A. emarginata seedlings subject to the presence and absence of plant growth regulator consisting of kinetin, gibberellic acid, and indolbutyric acid and three concentrations of NaCl (0 mM, 50 mM, and 100 mM). When assessing these factors individually, it was observed that in the presence of plant growth regulators, there was a reduction in stomatal conductance and transpiration, and NaCl concentration (50 mM and 100 mM) caused a reduction in CO2 assimilation, stomatal conductance, and transpiration. There was no significant interaction between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Auxin; Cytokinin; Gibberellin; Photosynthesis; Sodium chloride.
Ano: 2018
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/16139

Crescimento relativo de Macrobrachium acanthurus (Wiegmann, 1836) (Crustacea, Decapoda, Palaemonidae)
Provedor de dados: 104
Autores: Valenti,Wagner Cotroni; Lobão,Vera Lúcia; Mello,Jeanette T. Cardoso de.
In this paper, the relative growth of Macrobrachium acanthurus (Wiegmann, 1836) (Crustacea, Decapoda, Palaemonidae), is presented; the cephalothorax length/abdominal length, telson length/abdominal length and abdominal length/total length relashionships were determined. The adjusted equations showed a isometric growth pattern. There are no changes in these relationships during the animals growth that may be significant in the maximization of the meat's profit.
Tipo: Info:eu-repo/semantics/article
Ano: 1989
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751989000100001

Finite modelling of growth and yield of okra using different tillage systems in Obubra, Nigeria
Provedor de dados: 111
Autores: Odey, Simon Ogbeche.
Abstract:  Field experiment was conducted at the teaching and research farm of Cross River University of Technology, Faculty of Agriculture and Forestry, Obubra Campus. The study was aimed at finite modelling of growth and yield of Okra (Abelmoschus esculentus L.) using different tillage systems. Randomised Complete Block Design (RCBD) was used in the field, 1,024m2 with three treatments and three replicates. These treatments were Conventional, Conservative and Zero tillage. Each treatment had three replicates of size 8m x 8m, separated from each other by 2m for manoeuvring of the tractor. Planting of okra and other cultural practices were carried out. Soil samples were collected for analysis in the laboratory. Data on growth parameters and yield of okra...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Finite; Modelling; Growth; Yield; Okra; Tillage Systems; Soil.
Ano: 2022
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/7067

Mitogenic activity of fetal bovine serum, fish fry extract, insulin-like growth factor-I, and fibroblast growth factor on brown bullhead catfish cells - BB line
Provedor de dados: 57
Autores: CYRINO,J. E. P.; MULVANEY,D.R.
Biossays were performed to assess the effects of different levels of growth medium supplementation with fetal bovine serum (FBS), fish fry extract (FE), combinations of FBS and FE, and addition of insulin-like growth factor I (IGF-I) and fibroblast growth factor (FGF) on the proliferation of brown bullhead catfish cells (BB line). Treatments (n = 4) were: 2.5, 5, 10, and 15.0% FBS or FE and 5/2.5, 5/5, 10/2.5, and 10/5 of a FBS/FE combination as supplement to the growth medium, or the addition of 0.1, 1, 2.5, 10, 25, and 75 ng/ml of either IGF-I or FGF to the growth media. Initial cell density was 1.1 x 10(6) cells per well on uncoated 24-well plates. Incubation temperature was 29.5 ± 0.7ºC. Six hours after plating, initial culture medium was removed,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mitogenic activity; Growth factors; Catfish; BB cell line.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081999000300017

Enhancement of growth of Lentinus crinitus in soil using benomyl and vegetable oil
Provedor de dados: 58
Autores: Machado,Kátia M.G.; Matheus,Dácio R.; Rodrigues,Tatiana A.; Bononi,Vera L.R.
In order to identify alternatives for soil fumigation in bioremediation process, the addition of benomyl and vegetable oil on the growth of L. crinitus and mitosporic fungi were evaluated. Benomyl can be used as an alternative to methyl bromide. Addition of vegetable oil favors the growth of L. crinitus.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Benomyl; Basidiomycetes; Fungicide; Soil bioremediation; Laccase.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000400004

Monitoring Old Growth in Frequent-fire Landscapes
Provedor de dados: 7
Autores: Fiedler, Carl E.; College of Forestry and Conservation, University of Montana; carl.fiedler@umontana.edu; Friederici, Peter; School of Communication, Northern Arizona University; peter.friederici@nau.edu; Petruncio, Mark; Forestry Program, Yakama Nation; petruncio@yakama.com.
In this article, we discuss how to monitor the structural and functional attributes of old growth, as well as its associated plant communities and wildlife, both to determine the possible need for treatment and to assess post-treatment progress toward desired conditions. Monitoring can be used to detect conditions (or agents) that threaten existing old growth and also to document indicators of healthy, functioning old-growth systems.
Tipo: Peer-Reviewed article
Palavras-chave: Disturbance agents; Monitoring; Physiological/functional indicators; Risk assessment; Structural indicators.
Ano: 2007

Arbuscular mycorrhiza-like biotechnological potential of Piriformospora indica, which promotes the growth of Adhatoda vasica Nees
Provedor de dados: 69
Autores: Rai,Mahendra; Varma,Ajit.
We report the growth promoting potential of Piriformospora indica, which is a newly discovered arbuscular mycorrhiza-like fungus. It is a facultative symbiont and unlike arbuscular mycorrhizal fungi, it can be cultured in vitro. Adhatoda vasica is a medicinal plant. Rapid proliferation of roots was recorded in A. vasica withan important root colonization estimated to 95% after 6 months. P. indica improved growth of A. vasica. This association forms a new host-symbiont combination
Tipo: Journal article
Palavras-chave: Adhatoda vasica; Arbuscular mycorrhiza-like; Biotechnological potential; Growth promotion; Piriformospora indica.
Ano: 2005
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582005000100013

Предварительные данные о регулирующем действии органических веществ на рост и фотосинтез водорослей в проточной культуре.
Provedor de dados: 13
Autores: Кондратьева Т. М.
Experiments with three species of the Black sea plankton algae conducted without their preliminary adaptation to flowage conditions in chemostat showed a stimulating action of protein hydrolysate added to the Goldberg medium on the growth of Platymonas viridis (28%) and Ditylum brightwellii (30%). The rate of Prorocentrum micans growth under these conditions, on the contrary, decreased by 8% as compared to the control. Studies in the organic matter influence on the photosynthesis intensity yielded unlike results. The photosynthesis in Prorocentrum micans and Platymonas viridis after a 7-9 day exposure grew by 15-22% on the average and that in Ditylum brightwellii was inhibited by 20%. The regulating action of dissolved organic matter on growth and...
Tipo: Journal Contribution
Ano: 1982
URL: http://repository.ibss.org.ua/dspace/handle/99011/2375

Изучение накопления и выведения Zn65 черноморской водорослью Ulva rigida Ag. в связи с её ростом
Provedor de dados: 13
Autores: Иванов В. Н.; Егоров В. Н.; Рожанская Л. И.
Metabolism and accumulation of Zn65 by the green alga Ulva rigida were studied in connection with its growth by means of experiments and methods of mathematical modelling. A dependence between the Zn65 accumulation and the growth is found in Ulva rigida. It is shown that the Zn65 metabolism in alga is described satisfactorily by the chamber model, where the two chambers show kinetic of the metabolic processes and the third one Zn65 accumulation in the nonexchangeable found in the alga. It is established that zinc uptake for growth may reach 30% of the zinc total amount exchanged by the alga.
Tipo: Journal Contribution
Ano: 1978
URL: http://10.0.0.194:8080/dspace/handle/99011/3612

Influence of turbulence and turbidity on growth and survival of laboratory-reared bivalve larvae
Provedor de dados: 5
Autores: Seaman, Matthias; His, Edouard; Keskin, Mehmet; Reins, Torsten.
Laboratory-reared larvae of mussels (Mytilus galloprovincialis ) were incubated with and without sediment in a novel turbulence-producing machine. The sediments used were fine silt from the Gironde Estuary and from the German Wadden Sea. Larvae incubated in turbulence without sediment, and in suspended sediment concentrations similar to in situ conditions had growth rates which did not vary significantly from those of the controls. The growth rates of larvae incubated in 5 to 20 g/l of sediment were reduced by 20 to 50%. Survival was lower in larvae incubated with sediments than in turbulent and non-turbulent controls, but it was not correlated with sediment concentration. The results indicate that the mechanical effects of turbulence and turbidity on...
Tipo: Text
Palavras-chave: Controlled conditions; Environmental factors; Growth; Mollusc culture; Rearing; Survival; Turbidity; Mytilus galloprovincialis.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/00038/14902/12228.pdf

Donnees sur la biologie de la plie americaine Hippoglossoides platessoides des bancs meridionaux de Terre-Neuve et du plateau du Cap Breton
Provedor de dados: 5
Autores: Minet, Jean-pierre.
The systematic position and morphological characters of H.platessoides are presented. The geographical distribution, habitat and seasonal movements of the sp are described. Data on stomach contents and feeding behaviour are presented. Age and growth studies are also carried out and data on sexual maturity and reproduction are given. There are no significant morphological differences between the populations from the southern banks of Newfoundland and the Cap Breton are, however, biological and physiological differences between the 2 populations, especially in the diet, growth rates, spawning and sexual maturity. There are also differences in growth rates and size at 1st sexual maturity, between male and female.
Tipo: Text
Palavras-chave: ANW; Canada Hippoglossoides platessoides Reproduction Feeding Growth Geographical distribution Life cycle Organism morphology Taxonomy.
Ano: 1974
URL: http://archimer.ifremer.fr/doc/1974/publication-2034.pdf

Protein requirements of Penaeid shrimp.
Provedor de dados: 5
Autores: Kanazawa, A.
Proteins are indispensable nutrients for growth and maintenance of live of all animals. The optimum protein levels in diets for shrimps are different among the various species. Squid meal is an effective protein source for many penaeids. The effects of dietary protein, lipid, and carbohydrate levels on the growth and survival of larvae of Penaeus japonicus were examined by feeding trials using purified diet with carrageenan as a binder. As a result, the effects of protein levels on growth and survival of P. japonicus larvae varied with dietary carbohydrate levels but not dietary lipid levels.
Tipo: Text
Palavras-chave: Penaeus japonicus; Malacostraca; Marine crustaceans; Amino acids; Larvae; Survival; Carbohydrates; Diets; Nutritional requirements; Proteins; Growth.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1485.pdf

Growth, feeding and distribution of the solenette Buglossidium luteum with particular reference to its habitat preference
Provedor de dados: 5
Autores: Amara, Rachid; Mahe, K; Le Pape, Olivier; Desroy, N.
Growth, condition, diet and spatial distribution of the solenette Buglossidium luteum (Risso, 1810) were investigated along the coasts of the French Atlantic, eastern English Channel and Southern Bight of the North Sea. Distribution and habitat preferences of solenette were analysed in relation to physical and biological features presumed to influence fish distribution. B. luteum was patchily distributed and concentrated in shallow muddy and muddy-sand bottoms moderately influenced by estuarine waters (euhaline waters). In the studied area, solenette seemed to find habitats suitable for growth. Food availability was not assumed to be a limiting factor for solenette distribution in contrast to abiotic factors such as salinity.
Tipo: Text
Palavras-chave: Solenette; Habitat suitability; Distribution; Feeding; Growth.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/publication-777.pdf

Site selection and growth of the larvae of Eylais discreta Koenike, 1897 (Acari, Hydrachnellae)
Provedor de dados: 16
Autores: Davids, C.; Nielsen, G.J.; Gehring, P.
The distribution of the larvae of Eylais discreta on the abdominal tergites of the host species Sigara striata, S. falleni and Cymatia coleoptrata is examined. On S. striata and S. falleni the segments 3 and 4, on C. coleoptrata the segments 2 and 3 are successively preferred. There is but little influence of multiple infestations on this distribution. The growth rate on the various tergites of S. striata is similar, while on C. coleoptrata a possible difference could not be proved statistically. The larvae of E. discreta generally hibernate on the host; during this phase there is little growth; not until March-April they start growing faster. The larvae on C. coleoptrata are retarded in growth compared to those on S. striata. The larvae on S. falleni do...
Tipo: Article / Letter to the editor
Ano: 1977
URL: http://www.repository.naturalis.nl/record/504419

Deterministic individual-based cellular automata modelling of single species population dynamics
Provedor de dados: 17
Autores: Lev Kalmykov; Vyacheslav Kalmykov.
This presentation was created to characterise foundations of cellular automata modelling of single species population dynamics. We show models of single species population growth based on deterministic birth-death-regeneration process and demonstrate a relationship between fecundity rate and population growth rate. Our models provide mechanistic simulation of logistic-like and double logistic-like curves of population growth that is not possible in the classical Verhulst model (logistic growth model). This method is deterministic individual-based and is based on logical &amp;#x201c;if-then&amp;#x201d; statements only. As this method is bottom-up mechanistic and provides a direct visual insight into dynamics of complex systems, we used it to study...
Tipo: Presentation
Palavras-chave: Ecology; Bioinformatics; Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/6661/version/1

Comparison of growth and exploratory behavior in mice fed an exclusively milk formula diet and mice fed a food-pellet diet post weaning
Provedor de dados: 19
Autores: Ishii, Toshiaki; Ito, Takuya; Nishimura, Masakazu; 石井, 利明.
An exclusively milk formula diet stunted the growth of mice immediately following weaning. Milk-fed mice displayed a low-frequency profile of exploratory behavior, while pellet-fed mice showed high-frequency exploration. In contrast to exploratory behavior, feeding behavior did not differ significantly between milk- and pellet-fed mice. Despite showing low-frequency exploratory behavior, mice on an exclusively milk formula diet showed no difference in behavioral activities analyzed by an automatic hole-board apparatus compared to pellet-fed mice. These results suggest that the growth stunt caused by an exclusively milk formula diet retards the acquisition of active exploratory behavior without affecting the emotional state of mice.
Palavras-chave: Feeding; Exploratory behavior; Growth; Weaning; Milk formula.
Ano: 2005
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/741

マキバメクラガメの生育と繁殖に及ぼす第一世代幼虫の食草の影響
Provedor de dados: 19
Autores: Hori, Koji; Kuramochi, Katsuhisa.
Ano: 1984
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2175

シバムギの稚苗と地下茎からの苗条の初期生長について
Provedor de dados: 19
Autores: 本江, 昭夫; Hongo, Akio.
Ano: 1985
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1460

Morphological Studies on the Thickening Growth of the Sugar Beet Root
Provedor de dados: 19
Autores: 源馬, 琢磨; GEMMA, Takuma.
Ano: 1971
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1062

Effects of Soil pH and Application of Organic Fertilizer on the Growth and Taste of Tomato
Provedor de dados: 19
Autores: 高橋, 伸彰; Takahashi, Nobuaki.
平成18年度
Ano: 2007
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/974

北海道東部地域に適応するアルファルファ品種の生育特性
Provedor de dados: 19
Autores: 堀川, 洋; Horikawa, Yoh.
Ano: 1986
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1505

育成牧場に預託された乳用育成牛の発育
Provedor de dados: 19
Autores: 池滝, 孝; 鈴木, 省三; Iketaki, Takashi; Suzuki, Shozo.
Ano: 1975
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1602

Wachstumsraten in Gefangenschaft gehaltener Meeresschildkröten.
Provedor de dados: 20
Autores: Kaufmann, R.
Se informa sobre la cria y crecimiento de Tortugas marinas en estado juvenile. Caretta, Eretmochelys y también Chelonia crecieron mucho más rápido durante los primeros cinco meses que lo observado hasta ahora  en las regiones no tropicales. Se continua con las investigaciones y se examinan las posibilidades del establecimiento de criaderos en la costa atlántica colombiana.
Tipo: Journal Contribution
Palavras-chave: Growth; Breeding; Turtle culture; Growth; Turtle culture; Breeding; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_8022; Http://aims.fao.org/aos/agrovoc/c_49902.
Ano: 1967
URL: http://hdl.handle.net/1834/3285

Wachstumsraten in Gefangenschaft gehaltener Meeresschildkröten.
Provedor de dados: 20
Autores: Kaufmann, R.
Se informa sobre la cria y crecimiento de Tortugas marinas en estado juvenile. Caretta, Eretmochelys y también Chelonia crecieron mucho más rápido durante los primeros cinco meses que lo observado hasta ahora  en las regiones no tropicales. Se continua con las investigaciones y se examinan las posibilidades del establecimiento de criaderos en la costa atlántica colombiana.
Tipo: Journal Contribution
Palavras-chave: Growth; Breeding; Turtle culture; Growth; Turtle culture; Breeding.
Ano: 1967
URL: http://hdl.handle.net/1834/3285

Estudio preliminar sobre la estructura de edades y el crecimiento de la pescadilla de red (Cynoscion guatucupa, Pisces, Sciaenidae) en el área sur de la provincia de Buenos Aires
Provedor de dados: 20
Autores: Ruarte, C.O.; Sáez, M.B.
Otoliths reading of specimens derived from research cruises carried out in the south of the Province of Buenos Aires (39°S-41°S), Argentine Sea, in 1998 and 1999 allowed to determine stripped weakfish (Cynoscion guatucupa, Pisces, Sciaenidae) age and growth.
Tipo: Journal Contribution
Palavras-chave: Age determination; Growth; Otoliths; Age determination; Growth; Otoliths; Http://aims.fao.org/aos/agrovoc/c_24110; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_27091.
Ano: 2008
URL: http://hdl.handle.net/1834/3144

Wachstumsraten in Gefangenschaft gehaltener Meeresschildkröten. II.
Provedor de dados: 20
Autores: Kaufmann, R.
Se comunican observaciones sobre el crecimiento de las tortugas marinas Caretta (Caguamo), Eretmochelys (Carey) y Chelonia (Tortuga Blanca), hasta una edad de 2 años. Fuera del aumento en longitud y peso, se discuten los cocientes de longitud contra anchura del caparazón, y de la longitud del caparazón contra el peso del cuerpo, en parte en comparación con poblaciones adultas.
Tipo: Journal Contribution
Palavras-chave: Aquatic reptiles; Growth; Turtle culture; Growth; Turtle culture; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_8022.
Ano: 1972
URL: http://hdl.handle.net/1834/3300

International study on &lt;i&gt;Artemia&lt;/i&gt;: 14. Growth and survival of &lt;i&gt;Artemia&lt;/i&gt; larvae of different geographical origin in a standard culture test
Provedor de dados: 27
Autores: Vanhaecke, P.; Sorgeloos, P.
For characterization of strains of the brine shrimp &lt;i&gt;Artemia&lt;/i&gt; of different geographical origin, a standard culture test has been developed in order to compare statistically growth and survival of larvae of different strains. 25 geographical strains have been studied so far -including, for 3 strains, analyses of cysts harvested at different times. Important differences in rates of growth and survival were observed between strains but not among batches of the same strain. Best performances were noted for strains from Bahia Salinas (Puerto Rico), Buenos Aires (Argentina), Chaplin Lake (Canada), Great Salt Lake (Utah, USA), Galera Zamba and Manaure (Colombia).
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture; Growth; Larvae; Survival; Artemia.
Ano: 1980
URL: http://www.vliz.be/imisdocs/publications/261892.pdf

La croissance de la crevette grise (&lt;i&gt;Crangon crangon&lt;/i&gt; L.) au large de la côte belge
Provedor de dados: 27
Autores: Schockaert, E.
The carapace length of the shrimp is directly proportional to the total length. At each moulting, a certain number of segments is added to the exopodite of the antennula. The frequency of moulting is a function of the temperature. If the mean monthly temperatures off the Belgian coast are known, this will enable us to draw a growth curve of &lt;i&gt;Crangon crangon&lt;/i&gt;.Connecting the modes in the successive population curves gives a growth curve with only relative value, but it nevertheless confirms the one obtained by the preceding method.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth curves Growth rate Temperature effects Crangon crangon (Linnaeus; 1758) [Brown shrimp] ANE; Belgium; Belgian Coast.
Ano: 1968
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=6702

Healthy Growth : Biovallée Case Study Report
Provedor de dados: 21
Autores: Lamine, Claire; Bui, Sibylle.
Biovallée is one of the three territorial case studies of HealthyGrowth, along with the Biodistretto Cilento (It) and the Bioregion Mühlviertel (Au). Territorial case studies are not focused on a single chain but on a whole territorial agrifood system. This allows to analyse more deeply the modes of coordination between various actors and institutions (public and private), the management and governance models and the ways these contribute to maintain the ’added value’. As they differ from the value-chain focus of the other case studies of the HealthyGrowth project, territorial case studies imply some changes and adaptations in the template, some dimensions being irrelevant in our case.
Tipo: Report
Palavras-chave: Community development Food security; Food quality and human health Markets and trade Consumer issues Food systems Policy environments and social economy Produce chain management.
Ano: 2015
URL: http://orgprints.org/28956/1/Lamine_2015_%2328956_report_RESTRICTED.pdf

Organic farming policies and the growth of the organic sector in Denmark and the UK: a comparative analysis
Provedor de dados: 21
Autores: Daugbjerg, Carsten; Tranter, Richard; Holloway, Garth.
There has been little systematic analysis of the extent to which organic farming policies have influenced growth in the organic sector. Analyses of organic farming policy instruments, for the most part, provide extensive and detailed reviews of instruments applied either in a single country or across countries. Hence, there is a great need to examine systematically whether there is a relationship between the introduction of organic farming policies and the growth of the organic food sector, and whether particular designs of organic farming policies are more effective than others. In this paper, we take the first step in the endeavour of analysing the effects of organic farming by undertaking an econometric analysis of the relationship between organic...
Tipo: Conference paper, poster, etc.
Palavras-chave: "Organics" in general; History of organics.
Ano: 2008
URL: http://orgprints.org/13954/1/13954.pdf

HealthyGrowth: Wie können Öko-Wertschöpfungsketten wachsen ohne ihre Höherwertigkeit zu verlieren? Ergebnisse und Empfehlungen
Provedor de dados: 21
Autores: Münchhausen, von, Susanne; Häring, Anna Maria; Knickel, Karlheinz.
Im Rahmen des europäischen CoreOrganicII Projektes HealthyGrowth erarbeitete das HNEE-Team die Empfehlungen für Politik und Praxis. Diese beruhen auf den Fallstudien und vergleichenden Auswertungen aller Projektpartner.
Tipo: Report
Palavras-chave: Farm economics Markets and trade Education; Extension and communication Produce chain management.
Ano: 2016
URL: http://orgprints.org/31275/1/HealthyGrowth-Politik-Praxis-Empfehlungen-10-2016.pdf

Growth and differentiation: Life processes in crops
Provedor de dados: 21
Autores: Bloksma, Joke; Huber, Machteld.
This booklet discusses two basic life processes in nature:growth and differentiation.It uses the examples of apples,carrots and wheat to illustrate how growers can recognize these processes and can take practical measures to correct the balance between them in order to optimize the quality of their products.Thinking in growth and differentiation has proved valuable in the support,offered to growers by the Louis Bolk Instituut. It also speculates about the possible significance of these processes for human health.
Tipo: Book
Palavras-chave: Food security; Food quality and human health Crop health; Quality; Protection Cereals; Pulses and oilseeds Root crops Fruit and berries.
Ano: 2002
URL: http://orgprints.org/4202/1/4202.pdf

The concept of the business logic for the management of values-based food businesses and chains - Task 2 report, HealthyGrowth WP5
Provedor de dados: 21
Autores: Münchhausen, von, Susanne; Häring, Anna Maria; Knickel, Karlheinz.
The report presents the results of the case study analyses which are based on the application of the business logic concept. This analytical approach represents the second (Task 2)of the six perspectives applied under the umbrella of the multi-perspective analysis of the HealthyGrowth project (WP5). The analysis focuses on business goals, strategies and management instruments identified in the case studies of the European research project HealthyGrowth - from niche to volume with integrity and trust.
Tipo: Report
Palavras-chave: Farm economics; Specific methods; Markets and trade; Produce chain management.
Ano: 2016
URL: http://orgprints.org/30694/1/Task2%20Report_version3.pdf

Preliminary studies on the effect of herbs on the growth and health of suckling piglets
Provedor de dados: 21
Autores: Ivanova-Peneva, Sonya G.; Nedeva, Radka D.; Kirov, Marincho S.
The effect of some herbs with strengthening immune system and antiphlogistic action from Bulgaria has been studied in two pilot trials, first with 8 litters (4 control and 4 with herbs in the water) and second with 15 litters (5 control, 5 with herbs in the water and 5 with herbs in the fodder). The growth and health status (score of diarrhoea) during the suckling period has been recorded. Treatment of diarrhoea with herbs has been applied to litters with manifestation of diarrhoea in second trial. The results showed that supplement of herbs in the water or in the fodder of suckling piglets improved growth and health status of piglets and further studies are needed for establishing the best combination of herbs.
Tipo: Conference paper, poster, etc.
Palavras-chave: Health and welfare.
Ano: 2006
URL: http://orgprints.org/7536/1/template.doc

Contribution of feeds from range in organic broiler production
Provedor de dados: 21
Autores: Steenfeldt, S.; Horsted, K.; Sørensen, P.
A study with organic broilers with access to a large range area with herbs was performed and the effect of three broiler genotype (JA757, T851, SU51) with different growth rates and different feeding strategies (HP vs LP) on the animals' feed intake, growth and welfare was investigated. The results so far indicate that feed intake from range and animal welfare is dependent on type of allocated feed and growth rate of the broiler genotype. Thus, gait scores and foot and plumage condition showed that the fastest growing broiler genotype had some problems when fed normal broiler feed, whereas this was not the case for the other genotypes. The fastest growing broilers also ate more pelleted broiler feed compared to the slower growing breeds, which in contrast...
Tipo: Journal paper
Palavras-chave: Feeding and growth; Breeding and genetics; Health and welfare; Poultry.
Ano: 2015
URL: http://orgprints.org/28908/3/28908.pdf

Effect of arbuscular mycorrhiza fungi on growth and development of onion and wild relatives
Provedor de dados: 21
Autores: Scholten, Dr. Olga E.; Galvan-Vivero, Guillermo; Burger-Meijer, Karin; Baar, Dr. Jacqueline; Kik, Dr. Chris.
Arbuscular mycorrhizal fungi play an important role in the uptake of nutrients and water from soil. Onions, Allium cepa L., are plants with a shallow root system. As a result, onion plants need a lot of fertiziler for their growth. Furthermore, onion plants are sensitive to drought. The aim of the current research project is to study the beneficial effect of mycorrhizal fungi on the growth and development of Allium species and to determine whether it is possible to improve onions for mycorrhizal responsiveness by means of breeding.
Tipo: Conference paper, poster, etc.
Palavras-chave: Breeding; Genetics and propagation.
Ano: 2006
URL: http://orgprints.org/7560/1/template_onion%2Dodense.doc

Compositional variation in fruits of currants as function of genotypes and their interactions with growth environments
Provedor de dados: 21
Autores: Yang, Baoru; Zheng, Jie; Kallio, Heikki.
Currants (Ribes spp.) are the second largest group of cultivated berries in Europe with  an annual output of fresh berries over 700,000 tons. The major countries of currant  cultivation include Nordic countries, Poland, Germany, France, Russia and the United  Kingdom with different cultivars, growth environments, and cultivating techniques  among these countries. Fruits of currants have been shown to have a wide range of  beneficial effects on human health. The sensory properties and health effects are of  crucial importance for the industrial utilisation of the berries. Genotypes and growth  environments play an important role in modifying the composition of the berries that  directly defines the nutritional and sensory qualities of the fruits.
Tipo: Conference paper, poster, etc.
Palavras-chave: Food security; Food quality and human health.
Ano: 2010
URL: http://orgprints.org/18289/1/Kallio.doc

Enhanced catch-up growth after a challenge in animals on organic feed
Provedor de dados: 21
Autores: Huber, Machteld; Coulier, Leon; Wopereis, Suzan; Savelkoul, Huub; Nierop, Dré; Hoogenboom, Ron.
A feeding experiment was performed in two generations of three groups of chickens with different immune responsiveness. All groups were fed identically composed feeds from either organic or conventional production. In the young animals of the second generation an immune challenge was imposed. The chickens fed conventional feed showed overall a higher weight gain, whereas feed intake of the groups was similar. The animals on organic feed showed an enhanced immune reactivity, a stronger reaction to the immune challenge, as well as an enhanced ’catch-up-growth’ after the challenge.
Tipo: Conference paper, poster, etc.
Palavras-chave: Food security; Food quality and human health.
Ano: 2012
URL: http://orgprints.org/20834/1/2560.pdf

Organic Farming in Europe - Growth, Policy Support and Future Potential
Provedor de dados: 21
Autores: Lampkin, Dr Nicolas.
Organic farming is increasingly recognised, by consumers, farmers, environmentalists and policy-makers, as one of a number of possible models for environmental, social and financial sustainability in agriculture. Recent years have seen very rapid growth in the sector. In 1985, certified and policy-supported organic production accounted for just 100,000 ha on 6,300 holdings in the EU, or less than 0.1% of the total utilisable agricultural area (UAA). By the end of 1998, this had increased to more than 2.8 million ha on 113,000 holdings, nearly 2.1% of total UAA, a 30-fold increase in 13 years (Foster  and Lampkin, 1999).    This paper discusses factors influencing the growth of organic farming in the EU, including supporting policy measures, and the...
Tipo: Conference paper, poster, etc.
Palavras-chave: Policy environments and social economy "Organics" in general Values; Standards and certification.
Ano: 2000
URL: http://orgprints.org/11018/1/geneva_00.pdf

Conditions for the germination and the early growth of seedlings of Polaskia chichipe (Goss.) Backeberg and Echinocactus platyacanthus Link and Otto fa. grandis (Rose) Bravo-Hollis (Cactaceae): (with 2 tables &amp;#38; 2 figures)
Provedor de dados: 85
Autores: Rosas-López,Ulises; Collazo-Ortega,Margarita.
The effect of different combinations of chemical scarification, soaking and substrates (ex vitro and in vitro) on seed germination ofPolaskia chichipe (Goss.) Backeberg and Echinocactus platyacanthus Link &amp;#38; Otto fa. grandis (Rose) Bravo-Hollis, collected in the Tehuacan Valley, Mexico, were studied. The P chichipe seeds did not require either chemical scarification or soaking, whereas E platyacanthus required chemical scarification with strong acids. Growth and maintenance of the seedlings was evaluated in two different concentrations of Murashige-Skoog medium (50% and 100% of their components). It was found that MS 50% stimulated germination in both species and promoted seedling growth.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Polaskia chichipe; Echinocactus platyacanthus; Cacti; Seed germination; Establishment; Seedling growth.
Ano: 2004
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572004000100026

WHY IS AGRICULTURAL LABOUR PRODUCTIVITY HIGHER IN SOME COUNTRIES THAN OTHERS?
Provedor de dados: 31
Autores: Gutierrez,   Luciano.
Agriculture productivity varies dramatically in different regions of the world. Using recent theories of economic growth and new data sets (Larson and al., 1999) as a guide, this study finds some empirical regularities between agricultural labour productivity growth, investment and education, as also for environmental factors, for 44 countries during the period 1980-1993. We find strong evidence that where agricultural investment and educated people rates are higher, agricultural labour productivity grows faster. Secondly, geographical factors as well as freer trade influence growth.  Finally, we find evidence of conditional convergence, which means that cross-country agricultural productivity does not converge to the same level of steady state but that...
Tipo: Conference Paper or Presentation
Palavras-chave: Growth; Labour productivity; Convergence; Labor and Human Capital; Productivity Analysis.
Ano: 2000
URL: http://purl.umn.edu/21741

Has growth in productivity in Australian broadacre agriculture slowed?
Provedor de dados: 31
Autores: Sheng,   Yu; Mullen,   John D.; Zhao,   Shiji.
Agricultural productivity growth has been strong relative to other sectors in the Australian economy, and relative to the agricultural sectors of other developed countries. However, as commonly observed among other developed economies, growth in productivity in the broadacre sector of Australian agriculture seems to have slowed in the past decade. This paper uses the adjusted cumulative sum square (CUSQ) index to examine the trend stability of total factor productivity in Australian broadacre agriculture over the period 1952-53 to 2006-07. The results show that a significant slowdown occurred around the mid-1990s. Further analysis shows that the slowdown in productivity growth is driven by a longterm decline in public R&amp;D investment in addition to poor...
Tipo: Conference Paper or Presentation
Palavras-chave: Total factor productivity; Structural change analysis; CUSUM index; Crop Production/Industries; Farm Management.
Ano: 2010
URL: http://purl.umn.edu/59266

Human Capital, Population Growth and Economic Development: Beyond Correlations
Provedor de dados: 31
Autores: Rosenzweig,   Mark R.
Empirical evidence on three assertions commonly-made by population policy advocates about the relationships among population growth, human capital formation and economic development is discussed and evaluated in the light of economic-biological models of household behavior and of its relevance to population policy. The three assertions are that (a) population growth and human capital investments jointly reflect and respond to changes in the economic environment, (b) larger families directly impede human capital formation, and (c) the inability of couples to control fertility is an important determinant of investment in human capital. The evidence suggests that widely-observed correlations among population growth, human capital and economic variables, which...
Tipo: Working or Discussion Paper
Palavras-chave: International Development; Labor and Human Capital.
Ano: 1987
URL: http://purl.umn.edu/7520

Tourism, Economic Expansion and Poverty in Nicaragua: Investigating Cointegration and Causal Relations
Provedor de dados: 31
Autores: Vanegas,   Manuel, Sr.; Croes,   Robertico.
Replaced with revised version of paper 09/10/07.
Tipo: Working or Discussion Paper
Palavras-chave: Food Security and Poverty; International Development.
Ano: 2007
URL: http://purl.umn.edu/7306

The Roles of the Environment and Natural Resources in Economic Growth Analysis
Provedor de dados: 31
Autores: Toman,   Michael.
The primary aim of this paper is pedagogical. We first present and discuss a "wiring diagram" framework in order to elucidate the general links between economic growth and "natural capital." After developing the general framework, we develop parallel frameworks applicable to several specific sectors of the economy (agriculture, forestry, and manufacturing). Two appendices provide a mathematical formulation of the economy-wide framework and a brief historical review of the role of natural resources and the environment in economic growth theory.
Tipo: Working or Discussion Paper
Palavras-chave: Economic growth; Natural resources; Sustainable development; Resource /Energy Economics and Policy; Q00; O1.
Ano: 2003
URL: http://purl.umn.edu/10510

Agricultural Credit Interest Rate Equalization Policy: A Growth Subsidy?
Provedor de dados: 31
Autores: Castro,   Eduardo Rodrigues de; Teixeira,   Erly Cardoso.
The Brazilian Interest Rate Equalization System (IRES) subsidizes farmers by providing them with credit at lower than market interest rates. The objective of this research is to evaluate the IRES by comparing its monetary cost with its benefits as measured by Brazilian GDP growth. Estimates are carried out using input-output matrix. The results suggest that each Brazilian real spent by IRES to assist Brazilian family farms increases Brazilian GDP by R$ 1.75 and that each real spent to assist commercial farms increases GDP by R$ 3.57. The IRES is a subsidy that generates economic growth greater than its cost to society.
Tipo: Conference Paper or Presentation
Palavras-chave: IRES subsidy; Growth; Input-output matrix; Agricultural Finance; Q18; C67; O40; H81.
Ano: 2006
URL: http://purl.umn.edu/25358

Japan 1968: A Reflection Point During the Era of the Economic Miracle
Provedor de dados: 31
Autores: Hamada,   Koichi.
1968 was an epoch-making year in the Japanese economic history, or in the Japanese history in general. In this centennial year after the Meiji restoration, Japan's GNP became the second largest in the world surpassing West Germany. Japan was cruising on one of the most rapid growth trajectories, but it was anticipating the shade of future changes. Student movements flourished, being synchronized the world over, pollution in urban areas erupted and inflationary pressure began to surface. Japan's balance of current account turned into a pattern of chronic surplus, the pattern that led to the collapse of the Bretton Woods regime. In the socio-economic sense, 1968 was a reflection point of Japan's high growth period. This paper describes the economic forces...
Tipo: Working or Discussion Paper
Palavras-chave: Japan; High growth period; Student movements; Collapse of Bretton Woods; Pollution; Political Economy.
Ano: 1996
URL: http://purl.umn.edu/28487

Regional Trends and Pattern in Milk Production and Drivers for Future Growth in Gujarat State
Provedor de dados: 31
Autores: Shah,   Jignesh; Dave,   Darshana.
The state of Gujarat has historically been the front runner in milk production activities. The state’s share in country’s milk production as well as per capita availability of milk have been increasing consistently, ensuring not only food security but also employment and livelihood sustenance in the rural areas. A phenomenal growth in milk production of cross-bred cows has been witnessed in recent years, especially in the southern and northern regions of the state. Historically, among the various factors contributing to growth in milk production, incremental dairy animal population has been the important factor. However, henceforth it is the yield of lactating animals – a single-most significant factor that needs to be focused for augmenting and sustaining...
Tipo: Journal Article
Palavras-chave: Agricultural and Food Policy.
Ano: 2010
URL: http://purl.umn.edu/96955

SECURITY IS LIKE OXYGEN: EVIDENCE FROM UGANDA
Provedor de dados: 31
Autores: Zhang,   Xiaobo.
Since the early 1990s, Uganda has been one of Africa's fastest growing countries. However, at the sub-national level, growth has been uneven due to civil conflict in the northern region. Using a panel of household and community level data, this paper examines the links between security and economic growth. It is found that security is a pre-condition for successful economic development and that there is in fact a threshold level of security below which public investments in infrastructure and education have little impact on growth. Only when security exceeds this threshold do public investments stimulate economic growth. Economists and policy advisors living in peaceful countries often prescribe economic policies that hinge on the assumption of good...
Tipo: Conference Paper or Presentation
Palavras-chave: Institutional and Behavioral Economics.
Ano: 2004
URL: http://purl.umn.edu/20384

Agricultural and non-agricultural outputs and energy consumption in Tunisia: empirical evidences from cointegration and causality
Provedor de dados: 31
Autores: Chebbi,   Houssem Eddine; Boujelbene,   Y.
This short paper investigates the cointegration and causality link between energy consumption and agricultural, non-agricultural outputs (manufacturing sector and services sector) and overall gross domestic product in Tunisia for 1971-2003 period. Empirical results suggest that there is only unidirectional causality running from agricultural and non-agricultural sectors to energy consumption as well as from overall GDP growth to energy consumption. This unidirectional causality signifies a less energy dependent economy and suggests that it is sectoral growth that drives the energy consumption in Tunisia and not vice versa. Empirical results suggest also that Tunisian agricultural sector growth does not depend on energy, and high consumption of energy do...
Tipo: Conference Paper or Presentation
Palavras-chave: Energy consumption; Output growth; Causality; Cointegration; Tunisia; Resource /Energy Economics and Policy.
Ano: 2008
URL: http://purl.umn.edu/44055

Brazilian Agricultural Credit Interest Rate Equalization Policy: A Growth Subsidy?
Provedor de dados: 31
Autores: Castro,   Eduardo Rodrigues de; Teixeira,   Erly Cardoso.
The Brazilian Interest Rate Equalization System (IRES) subsidizes farmers by providing them with credit at lower than market interest rates. The objective of this research is to evaluate the IRES by comparing its monetary cost with its benefits as measured by Brazilian GDP growth. Estimates are carried out using input-output matrix. The results suggest that each Brazilian real spent by IRES to assist Brazilian family farms increases Brazilian GDP by R$ 1.75 and that each real spent to assist commercial farms increases GDP by R$ 3.57. The IRES is a subsidy that generates economic growth greater than its cost to society.
Tipo: Conference Paper or Presentation
Palavras-chave: IRES subsidy; Growth; Input-output; Agricultural and Food Policy; Q18; C67; O40; H81.
Ano: 2005
URL: http://purl.umn.edu/24694

Analysis of Farm Development in Dutch Agriculture and Horticulture
Provedor de dados: 31
Autores: Bremmer,   Johan; Oude Lansink,   Alfons G.J.M.; Olson,   Kent D.; Baltussen,   Willy H.M.; Huirne,   Ruud B.M.
This paper analysis the effects of farmer characteristics, farm structure and farm performance on farm renewal and farm growth. The data set used in this research consists  of panel data from the Dutch Farm Accountancy Data Network of farms specialized in plant production extended with a data from survey among those farms. Probit models were used to determine the likelihood of the changes. Results show that the degree of mechanization increases the probability of farm growth and farm renewal. Family labour  input and solvency have a negative impact on farm growth. Farm size is positively correlated with farm renewal. No indications of the influence of the life cycle have been  found.
Tipo: Conference Paper or Presentation
Palavras-chave: Decision making; Diversification; Farm growth; Farm structure; Innovation; Panel data; Crop Production/Industries; Farm Management.
Ano: 2002
URL: http://purl.umn.edu/7025

KNOWLEDGE SPILLOVER, LEARNING INCENTIVES AND ECONOMIC GROWTH
Provedor de dados: 31
Autores: Tsur,   Yacov; Zemel,   Amos.
Knowledge spillover implies that the social value of knowledge is higher than its private value and leads to insufficient private investment in human capital.  This paper examines implications for economic growth and offers a remedy.  An incentive mechanism that implements the socially optimal outcome is offered based on learning subsidy and flat income or consumption taxes (each levied at a different phase of the growth process).  The scheme is self-financed in that the tax proceeds cover exactly the subsidy payments at each point of time.
Tipo: Working or Discussion Paper
Palavras-chave: Endogenous growth; Human capital; Knowledge spillover; Learning incentives; Linear taxes; International Development; C61; H21; O33; O38; O41.
Ano: 2004
URL: http://purl.umn.edu/14991

Agricultural Productivity Growth in the Euro-Med Region: Is there Evidence of Convergence?
Provedor de dados: 31
Autores: Galonopulos,   K.; Surry,   Yves R.; Mattas,   Konstadinos.
This paper measures agricultural productivity growth by means of the sequential Malmquist Total Factor Productivity (TFP) index among a set of thirty-two countries including West European, Central and East European (CEE) and Middle East and North African (MENA) countries for the period 1961-2002. At a second stage it is also investigated whether this measure is converging among the countries, by employing cross-sectional tests for absolute and conditional β-convergence as well as for club convergence. Results suggest that despite the fact that the CEE and MENA countries exhibit a high rate of productivity growth after the 1990s, absolute convergence cannot be accepted. Still, evidence for conditional convergence is found and the formation of two separate...
Tipo: Conference Paper or Presentation
Palavras-chave: Productivity growth; Sequential Malmquist TFP; Convergence.; Productivity Analysis.
Ano: 2008
URL: http://purl.umn.edu/43954

PRODUCTIVITY GROWTH IN THE FLORIDA FRESH WINTER VEGETABLE INDUSTRY
Provedor de dados: 31
Autores: Taylor,   Timothy G.; Wilkowske,   Gary H.
Results indicate that productivity growth has been a prime factor in Florida's ability to retain a competitive position in the United States domestic fresh winter vegetable market.  Total factor productivity indexes and productivity growth rates are estimated for the production of four major vegetable crops in one or more of four production areas in Florida.  Florida producers have exhibited substantial productivity growth over the 1969-70 to 1981-82 period.
Tipo: Journal Article
Palavras-chave: Crop Production/Industries; Productivity Analysis.
Ano: 1984
URL: http://purl.umn.edu/29723

Asymmetric property rights in China's economic growth
Provedor de dados: 31
Autores: Zhang,   Xiaobo.
This paper highlights the difference between secure investor property rights and loosely defined individual property rights. Globalization and fiscal decentralization have intensified this difference. On the one hand, in the presence of mobile foreign direct investments and under the arrangement of fiscal decentralization, local governments compete vigorously to offer various protections on the property rights of investors; on the other hand, local governments and developers attempt to acquire land at as low price as possible by taking advantage of the loopholes inherent in the Chinese law. Secure investor property rights together with weak protections on individuals’ land property rights is argued to be one of the major drivers of China’s rapid economic...
Tipo: Report
Palavras-chave: Property rights; Investments; Economic growth; China; Individual land property; Fiscal policies; Decentralization; Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/55406

Contracts, payment delays and firm growth: Evidence from Bulgarian agriculture
Provedor de dados: 31
Autores: Swinnen,   Johan F.M.; Van Herck,   Kristine.
The transition of a centrally planned to a more market economy provides a natural Experiment on the role of institutions and exchange in economic growth. This paper uses a unique dataset based on a survey of 305 dairy producing and supplying households in Bulgaria to analyze the impact of late payments for delivered products and farm assistance programs. The results of the dynamic panel analysis indicate that late payments have a negative influence on farm growth, while contracting with interlinked farm assistance programs, had a positive effect on farm growth.
Tipo: Conference Paper or Presentation
Palavras-chave: Agricultural and Food Policy; Farm Management; Land Economics/Use.
Ano: 2010
URL: http://purl.umn.edu/61079

IS THE EXPORT-LEAD GROWTH HYPOTHESIS VALID FOR CANADA?
Provedor de dados: 31
Autores: Awokuse,   Titus O.
Empirical evidence linking exports to economic growth has been mixed and inconclusive. This study re-examine the export-led growth (ELG) hypothesis for Canada by testing for Granger causality from exports to national output growth using vector error correction models (VECM) and the augmented vector autoregressive (VAR) methodology developed in Toda and Yamamoto (1995). Application of recent developments in time series modeling and the inclusion of relevant variables omitted in previous studies help clarify the contradictory results from prior studies on the Canadian economy. The empirical results suggest that a long-run steady state exists among the model's six variables and that Granger causal flow is unidirectional from real exports to real GDP.
Tipo: Working or Discussion Paper
Palavras-chave: International Development; International Relations/Trade; F43; C32.
Ano: 2002
URL: http://purl.umn.edu/15823

The Impact of Life Expectancy in Human Capital Accumulation: AIDS
Provedor de dados: 31
Autores: Huang,   Rui; Fulginiti,   Lilyan E.; Peterson,   E. Wesley F.
A three period overlapping generations model is developed to investigate the impact of shorter life expectancy due to disease, on human capital investment decisions and income growth. This research is particularly relevant to Sub-Saharan Africa given the dramatic reduction in life expectancy due to HIV/AIDS and the potential lasting effects on growth. Our results indicate that as life expectancy shortens so does schooling inducing a lower growth rate of income.  These relationships are even more pronounced for the African continent than for the rest of the world.
Tipo: Conference Paper or Presentation
Palavras-chave: HIV/AIDS; Africa; Life expectancy; Growth; Overlapping generations.; Labor and Human Capital.
Ano: 2003
URL: http://purl.umn.edu/22126

MEASURING PRODUCTIVITY GROWTH IN AUSTRALIAN BROADACRE AGRICULTURE
Provedor de dados: 31
Autores: Mullen,   John D.; Cox,   Thomas L.
An important source of growth for Australian broadacre agriculture has been technical progress. We compare alternative measures of productivity growth including the traditional Tornqvist-Thiel total factor productivity index; variants of this approach that allow decreasing returns to scale; the Fisher ideal index; other nonparametric measures that do not impose particular functional forms and an econometric estimate from a translog industry cost function. The annual growth in productivity in broadacre agriculture over the period from 1953 to 1994 was in the range of 2.4 to 2.6 per cent and hence was quite robust to measurement technique.
Tipo: Journal Article
Palavras-chave: Productivity Analysis.
Ano: 1996
URL: http://purl.umn.edu/22365

THE EFFECT OF INNOVATIVE BEHAVIOR AND TECHNOLOGICAL SPILLOVERS ON EMPLOYMENT GROWTH IN THE US MIDWEST
Provedor de dados: 31
Autores: Monchuk,   Daniel C.; Miranowski,   John A.
This study uses an overlapping generations (OLG) model with two labor types and two employment regions to examine factors driving labor migration. Specifically, we examine the effect of innovative behavior on employment growth. Using an OLG model, we test this hypothesis in the Midwestern States of Iowa, Minnesota, Missouri, Kansas, Nebraska, South Dakota, and North Dakota for eight sectors of employment. We find innovative behavior as measured by patents has a positive effect on employment growth in all sectors studied for the growth period 1969-99.
Tipo: Conference Paper or Presentation
Palavras-chave: Labor and Human Capital; Research and Development/Tech Change/Emerging Technologies.
Ano: 2002
URL: http://purl.umn.edu/19773

Past and Future Sources of Growth For China
Provedor de dados: 31
Autores: Fan,   Shenggen; Zhang,   Xiaobo; Robinson,   Sherman.
This study develops an analytical framework to account for sources of rapid economic growth in China. The traditional Solow approach includes only two sources, i.e. increased use of inputs and technical change. We expanded the approach to include a third source of economic growth—structural change. The empirical results show that structural change has contributed to growth significantly by reallocating resources from low productivity to high productivity sectors, especially by moving labor from agricultural production to rural enterprises. We also found that the returns to capital investment in both agricultural production and rural enterprises are much higher than those in urban sectors, indicating underinvestment in rural areas. On the other hand, labor...
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 1999
URL: http://purl.umn.edu/42829

Rural Non-farm Livelihoods in Transition Economies: Emerging Issues and Policies
Provedor de dados: 31
Autores: Davis,   Junior.
This article reviews key conceptual issues related to the development of the rural non-farm economy (RNFE) in a transition context and analyses available empirical evidence on the role of RNFE during recovery from the transition recession. Growth in the RNFE in the transition countries took place during the recession transition, which shows that it may be distress driven, but the paper explores other factors which may be driving the RNFE. It looks at the RNFE in light of the factors driving income growth and inequality, i.e. endowments and institutions. It concludes that, although not uniform across transition countries, the RNFE should be seen as a component of a growth strategy rather than as a temporary “refuge” or survival one. The patterns of growth...
Tipo: Journal Article
Palavras-chave: Transition economies; Rural livelihoods; Rural non-farm economy; Rural poverty; Rural development; Community/Rural/Urban Development.
Ano: 2006
URL: http://purl.umn.edu/112606

THE EFFECT OF AGRICULTURE ON COUNTRY TOWN POPULATION IN THE GRAZING AND WHEAT GROWING REGIONS OF NEW SOUTH WALES
Provedor de dados: 31
Autores: Davidson,   Bruce Robinson.
An attempt was made to identify the factors which determined the rate of growth of the populations of country towns in the grazing and wheat growing regions of New South Wales between 1958 and 1971. The town population increased even though farm population declined during the period studied. In the Wheat and Sheep Zone and on the Northern Tablelands the rate of growth of country town population appeared to be determined by the rate of growth in the gross revenue from agriculture. In all other regions agricultural factors appeared to have little effect on the rate of growth of country towns.
Tipo: Journal Article
Palavras-chave: Community/Rural/Urban Development.
Ano: 1976
URL: http://purl.umn.edu/9166

Imperfect Competition and Total Factor Productivity Growth in U.S. Food Processing
Provedor de dados: 31
Autores: Azzam,   Azzeddine M.; Lopez,   Elena; Lopez,   Rigoberto A.
This article examines the role of imperfect competition in determining total factor productivity growth (TFPG) by bringing together a New Empirical Industrial Organization (NEIO) model and the TFPG model of Nadiri and Mamuneas (1998). Applying the integrated model to 1973-92 data from 29 food processing industries revealed that changes in markups, economies of scale, and demand growth contributed positively to TFPG while the disembodied technical change was a negative contributor. Furthermore, the TFPG estimates are starkly different from the conventional (Solow's residual) TFPG measures, underscoring the need to account for imperfect competition, returns to scale, and demand in analyses of this type.
Tipo: Working or Discussion Paper
Palavras-chave: Productivity growth; Imperfect competition; Scale economies; Food processing; Agribusiness; Industrial Organization; Productivity Analysis.
Ano: 2002
URL: http://purl.umn.edu/25147

Human capital and its effect on the farm business life cycle
Provedor de dados: 31
Autores: Hadrich,   Joleen C.
Human capital has been identified as significant determinant of farm size growth.  However, there are numerous measures for human capital.  Traditional measures include age, experience, and education of the principal operator and a management measure.  This study identifies three types of management capabilities: production, financial, and human resource, as human capital measures.  Farm size growth is estimated over a 15 year time period, 1994-2009.  Results indicate that age of principal operator, financial management, and human resource management are significant determinants of farm size growth.
Tipo: Conference Paper or Presentation
Palavras-chave: Human capital; Farm life cycle; Farm growth; Agricultural Finance; Farm Management; Labor and Human Capital.
Ano: 2011
URL: http://purl.umn.edu/103481

Role of innovation in growth of countries
Provedor de dados: 31
Autores: Tejinder,   Sara.
The paper discusses the role of innovative capability in growth of a country by arguing that in the long run, a nation’s higher order competitive advantage can be built only with innovation. The paper also identifies eight determinants of innovation capability of a country. The discussion of these eight determinants should be useful for policy makers in countries attempting to promote economic growth by improving the productivity of the firms in their countries.
Tipo: Journal Article
Palavras-chave: Innovation; Economic growth; Productivity of the firms; Innovative firms; Innovation capability of a country.; International Development; Research and Development/Tech Change/Emerging Technologies; O10; 021; 031; 038.
Ano: 2010
URL: http://purl.umn.edu/94611

The Historical Fertility Transition: A Guide for Economists
Provedor de dados: 31
Autores: Guinnane,   Timothy W.
The historical fertility transition is the process by which much of Europe and North America went from high to low fertility in the nineteenth and early twentieth centuries. This transformation is central to recent accounts of long-run economic growth. Prior to the transition, women bore as many as eight children each, and the elasticity of fertility with respect to incomes was positive.  Today, many women have no children at all, and the elasticity of fertility with respect to incomes is zero or even negative. This paper discusses the large literature on the historical fertility transition, focusing on what we do and do not know about the process. I stress some possible misunderstandings of the demographic literature, and discuss an agenda for future work.
Tipo: Working or Discussion Paper
Palavras-chave: Fertility transition; Long-run growth; Malthusian models; Quantity-quality trade-off; Consumer/Household Economics; International Development; Labor and Human Capital; N3; O1; O4.
Ano: 2010
URL: http://purl.umn.edu/95271

Moving up and moving down: a new way of examining country growth dynamics
Provedor de dados: 31
Autores: Rockmore,   Marc; Zhang,   Xiaobo.
Do the countries which grow share the same features as those which decline? How can some countries achieve such long-term sustainable growth while others fail so badly? This paper builds on the emerging literature on growth asymmetries by examining movement across income categories in the World Development Reports over a significant period of time. The results confirm the existence of asymmetries and find that the factors which are correlated with movement upwards or downwards are markedly different. Evidence is presented which suggests that growth episodes share some common features while economic collapse may occur for a broader range of reasons.
Tipo: Report
Palavras-chave: International Development.
Ano: 2006
URL: http://purl.umn.edu/55400

Is U.S. Agricultural Productivity Growth Slowing?
Provedor de dados: 31
Autores: Wang,   Sun Ling.
Tipo: Article
Palavras-chave: Productivity Analysis.
Ano: 2010
URL: http://purl.umn.edu/121901

Total Factor Productivity and Sources of Long-term Growth in Indian Agriculture
Provedor de dados: 31
Autores: Rosegrant,   Mark W.; Evenson,   Robert E.
This paper assesses total factor productivity (TFP) growth in India, examines the  sources of productivity growth, including public and private investment, and estimates the  rates of return to public investments in agriculture.  The results show that significant TFP  growth in the Indian crops sector was produced by investments -- primarily in research -- but  also in extension, markets, and irrigation.  The high rates of return, particularly to public  agricultural  research  and  extension,  indicate  that  the  Government  of  India  is  not  over  investing in agricultural research and investment, but rather that current levels of public  investment could be profitably expanded.
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 1995
URL: http://purl.umn.edu/42821

Implications of Growth in China for the U.S. and Other Countries
Provedor de dados: 31
Autores: Zhuang,   Renan; Koo,   Won W.
We investigate the effects of China's economic growth on various sectors in the United States and other countries and regions, using a multi-region Global Trade Analysis Project (GTAP) model. The results indicate that all countries and regions, except South Korea and South Asian countries, would benefit from China's rapid economic growth. The welfare gain varies significantly across the countries and regions. Hong Kong and Taiwan would benefit the most from mainland China's economic growth in terms of per capita welfare gains. U.S. bilateral trade balance with China would improve in the sectors of grain and other primary agricultural products, but it would deteriorate in the sectors of textiles and high-tech manufacturing products.
Tipo: Conference Paper or Presentation
Palavras-chave: International Development.
Ano: 2007
URL: http://purl.umn.edu/10257

SOURCES OF GROWTH IN U.S. GDP AND ECONOMY-WIDE LINKAGES TO THE AGRICULTURAL SECTOR
Provedor de dados: 31
Autores: Gopinath,   Munisamy; Roe,   Terry L.
Sources of growth in U.S. gross domestic product (GDP) are analyzed in a general equilibrium, open economy framework using time-series data. Contributions from labor and capital account for 75% of the economy’'s average growth, with total factor productivity (TFP) accounting for the remainder. Changes in the domestic terms of trade appear to be biased in favor of the services sector and against the agricultural and industrial sectors. A number of Rybczynski and Stolper-Samuelson-like linkages between the agricultural sector and the rest of the economy are identified. Labor-using technological change and favorable terms of trade appear to be the major contributors to the growth of the services sector. These changes have led to a decline in the...
Tipo: Journal Article
Palavras-chave: Public Economics.
Ano: 1996
URL: http://purl.umn.edu/31023

COMMODITY POLICY, PRICE INCENTIVES, AND THE GROWTH IN PER-ACRE YIELDS
Provedor de dados: 31
Autores: Foster,   William E.; Babcock,   Bruce A.
We estimate the influence of policy-induced price changes and of technology supply on North Carolina flue-cured tobacco yields.  The decline in land rent and effective output price that accompanied a 1965 policy change from acreage allotments to poundage quotas caused a 12 percent decrease in yields.  Farmer yields were more responsive to yield-increasing technologies under acreage allotments than under poundage quotas.  Annual yield growth was 0.5 percent under poundage quotas and 4.32 percent under acreage allotments.  The growth rate decline is attributable to changes in relative prices and to a slowdown in the supply of available technologies.
Tipo: Journal Article
Palavras-chave: Commodity policy; Endogenous yield growth; Flue-cured tobacco; Technical change; Agricultural and Food Policy; Demand and Price Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 1993
URL: http://purl.umn.edu/15194

LABOR PRODUCTIVITY GROWTH AND CONVERGENCE IN THE KANSAS FARM SECTOR: A TRIPARTITE DECOMPOSITION USING THE DEA APPROACH
Provedor de dados: 31
Autores: Mugera,   Amin W.; Langemeier,   Michael R.
The objective of this paper is to analyze sources of labor productivity growth in the Kansas farm sector over the period 1993-2006 for a sample of 668 farms.  The nonparametric production frontier method is used to decompose labor productivity growth into three components: (1) technological catch-up, (2) technological change, and (3) capital deepening.  Kernel estimation methods are used to analyze the evolution of the entire distribution of labor productivity in the sample period.  We find that labor productivity is primarily driven by capital deepening.  On average, capital deepening is the main source of convergence in productivity and technical change is a source of divergence.  We find little evidence of technological catch-up. The impact of the three...
Tipo: Conference Paper or Presentation
Palavras-chave: Labor productivity; Growth; Technological catch-up; Technological change; Capital deepening; Labor and Human Capital.
Ano: 2008
URL: http://purl.umn.edu/6069

Growth Management Policies for Exurban and Suburban Development: Theory and an Application to Sonoma County, California
Provedor de dados: 31
Autores: Newburn,   David A.; Berck,   Peter.
This study examines the effectiveness of growth management policies on influencing future patterns of exurban and suburban development. We initially estimate a spatially explicit model of residential development with parcel data in Sonoma County, California. This estimated model is then used to simulate the effect of urban growth boundaries (UGBs) versus allowing municipal sewer service expansion. The UGB policy decreases the amount of suburban development but is less effective in managing exurban development. The downzoning policy in agricultural and resource areas reduces the amount of exurban development, but only partially due to the prevalence of grandfathered lots in rural areas.
Tipo: Article
Palavras-chave: Exurban development; Urban growth boundaries; Sprawl; Spatial modeling; Urban fringe; Land Economics/Use.
Ano: 2011
URL: http://purl.umn.edu/120269

The Environment and Directed Technical Change: Comment
Provedor de dados: 31
Autores: Hourcade,   Jean-Charles; Pottier,   Antonin; Espagne,   Etienne.
This paper discusses the growth model with environmental constraints recently presented in (Acemoglu et al., 2011) which focuses on the redirection of technical change by climate policies with research subsidies and a carbon tax. First, Acemoglu et al.'s model and chosen parameters yield numerical results that do not support the conclusion that ambitious climate policies can be conducted “without sacrificing (much or any) long-run growth”. Second, they select unrealistic key parameters for carbon sinks and elasticity of substitution. We find that more realistic parameters lead to very different results. Third, the model leads to an unrealistic conclusion when used to analyse endogenous growth, suggesting specification problems.
Tipo: Working Paper
Palavras-chave: Technological Change; Endogenous Growth; Climate; Energy Substitutability; Environmental Economics and Policy; O30; O33; Q43; Q54; Q56.
Ano: 2011
URL: http://purl.umn.edu/120046

On the Growth Performance of Sub-Saharan African Countries
Provedor de dados: 31
Autores: Busse,   Matthias.
The article discusses some of the most important reasons for the poor growth performance of most countries in sub-Saharan Africa. While high protection levels in high-income countries in Europe and North America for agricultural trade have been cited as a major impediment for the development of African countries, they are unlikely to play a major role. Rather, a lack of integration into world markets and the relatively poor quality of African institutions are more likely to explain the low growth rates.
Tipo: Journal Article
Palavras-chave: Agriculture; Growth; Institutions; Sub-Saharan Africa; Trade; Agribusiness; Agricultural and Food Policy; Agricultural Finance; Community/Rural/Urban Development; International Development; International Relations/Trade; Political Economy; N17; O43.
Ano: 2010
URL: http://purl.umn.edu/93797

GROWTH, POLICYMAKING, TRADE AND ECONOMIC DEVELOPMENT IN MALAYSIA
Provedor de dados: 31
Autores: Salih,   Thamir M.
For the period between 1957 and 1997, Malaysia’s development is analysed to determine the roles of inputs, planning, trade and government intervention in economic activity. Foreign investment is also analysed. During this period, by international standards, growth that Malaysia experienced was impressive. This growth was achieved through a policy framework that used government planning and investment in conjunction with incentives for the private sector. A unique feature of Malaysia’s planning was its call for social justice to advance the economic interest of its less economically privileged population. By adopting amalgam of development strategies and policies, policymakers were successful in improving the socio-economic status of the majority of the...
Tipo: Presentation
Palavras-chave: Economic Development; Export; Growth; Investment; Planning; Sustainability; Country Studies: Malaysia.; Agricultural and Food Policy; International Relations/Trade.
Ano: 2012
URL: http://purl.umn.edu/124437

THE USE OF DISCRIMINANT ANALYSIS IN MEASURING COOPERATIVE GROWTH FACTORS
Provedor de dados: 31
Autores: Henehan,   Brian M.; Pelsue,   Neil H., Jr.
Vermont agricultural cooperatives were surveyed to investigate key factors contributing to cooperative success.  Most of the cooperatives were formed within the last 15 years.  Financial, organizational, and operational data were collected for selected years from 1974-1984.   Average annual changes in gross sales were used to divide cooperatives into low-growth and high-growth groups.  Selected variables were identified to classify individual cooperatives into low- or high-performance groups with discriminant analysis.   Management experience and adoption of multi-year plans were the two factors found to have the most significant influence on cooperative sales growth.
Tipo: Journal Article
Palavras-chave: Agribusiness.
Ano: 1986
URL: http://purl.umn.edu/29063

TRICKLING DOWN: DOES LOCAL JOB GROWTH REDUCE POVERTY?
Provedor de dados: 31
Autores: Crandall,   Mindy S.; Weber,   Bruce A.
Was local job growth a significant determinant of poverty reduction between 1990 and 2000? This research takes advantage of newly available data and techniques to explore the job growth on tract-level poverty reduction. Spatial corrections to the model allow for more accurate identification of the significant determinants of poverty reduction across the United States. Results indicate that job growth is a highly significant predictor of poverty reduction, though its effect is modest. While spatial models didn't materially affect the regression coefficients, significant gains in model explanatory power were seen when using a spatial model as compared to OLS.
Tipo: Working or Discussion Paper
Palavras-chave: Food Security and Poverty.
Ano: 2005
URL: http://purl.umn.edu/18915

A QUANTITATIVE ASSESSMENT OF FACTORS CONTRIBUTING TO THE ECONOMIC GROWTH OF MICHIGAN REGIONS
Provedor de dados: 31
Autores: Nizalov,   Denys.
Many studies in regional development and economic geography are focused on factors that determine regional growth. In this paper a review of existing studies of regional growth is presented. The explanation power of the most recent studies is tested using the case of Michigan economy. In particular, the impact of high-tech industries, social attractiveness factors and regional economic development policies on the per capita income growth rate for Michigan counties is studied. Finally, the difference in effect of the policy and other factors in rural and metropolitan areas is assessed. The results of this work might be helpful in setting priorities using different development policy instruments.
Tipo: Thesis or Dissertation
Palavras-chave: Community/Rural/Urban Development.
Ano: 2003
URL: http://purl.umn.edu/10995

Convergence Hypothesis: Some Dynamics and Explanations of Agricultural Growth across Indian States
Provedor de dados: 31
Autores: Somasekharan,   Jayasekhar; Prasad,   Syam; Roy,   V.P. Nirmal.
In the recent years there has been considerable emphasis on understanding the regional dimensions of economic growth in India within the convergence implications of neoclassical growth paradigm. The study has tested the convergence hypothesis in per capita agricultural output and foodgrains productivity across the major 15 states of India. During 1971-2007, Indian states have exhibited sigma divergence in per capita agricultural output. The study on relationship between initial foodgrain output and growth rates has shown a divergence pattern rather than convergence during 1971-1988, and we could observe a weak convergence during 1988-2007.
Tipo: Journal Article
Palavras-chave: Beta convergence; Sigma convergence; Agricultural development; Agricultural and Food Policy; Q1; Q10; Q18.
Ano: 2011
URL: http://purl.umn.edu/118228

Corruption and economic growth in Lebanon
Provedor de dados: 31
Autores: Farida,   Moe; Ahmadi-Esfahani,   Fredoun Z.
This paper seeks to examine the impact of corruption on economic growth in Lebanon. Using a neoclassical model, we hypothesise that corruption reduces the country's standard of living as measured by real per capita GDP. We show that corruption deters growth indirectly through reducing the factor input productivity in a Cobb-Douglas production function. We provide empirical evidence suggesting that corruption increases inefficiencies in government expenditure and reduces investment and human capital productivity, leading to a negative impact on output. The implications of the analysis are explored.
Tipo: Conference Paper or Presentation
Palavras-chave: Corruption; Economic growth; Investment; Human capital; Government expenditure; Foreign aid; Institutional and Behavioral Economics; Labor and Human Capital; Public Economics.
Ano: 2008
URL: http://purl.umn.edu/6043

THE IMPACT OF AID ON ECONOMIC GROWTH IN TRANSITION ECONOMIES: AN EMPIRICAL STUDY
Provedor de dados: 31
Autores: Cungu,   Azeta; Swinnen,   Johan F.M.
This paper assesses econometrically the contribution of aid to output growth in a panel of twenty transition countries over nine years (1989-1997). The study finds a positive and statistically significant relationship between foreign aid and growth. A second result is that the positive effect of aid seems to be stronger when associated with economic liberalisation. The above findings are important, particularly in light of recent scepticism on the role of aid on developing country economic growth and the recent declining trend in aid commitments from industrialized countries.
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 2003
URL: http://purl.umn.edu/31890

Environment in Three Classes of Endogenous Growth Models
Provedor de dados: 31
Autores: Elbasha,   Elamin H.; Roe,   Terry L.
The implications of environmental externalities are studied within three classes of endogenous growth models viz. the linear technology models, the human capital models, and the R&amp;D and innovation models. The long-run rate of economic growth changes when environmental extemalities are introduced; the direction of change depends on the severity of extemalities and the intertemporal elasticity of substitution. The presence of environmental externalities cause the decentralized growth rate to diverge from the efficient rate. Which rate is bigger than the other depends, among other things, on the valuation of consumption relative to environmental quality. Several policy changes to align the two paths are discussed. The models are calibrated to U.S. data.
Tipo: Working or Discussion Paper
Palavras-chave: Environmental Economics and Policy; International Development.
Ano: 1995
URL: http://purl.umn.edu/7474

Economic Growth, Comparative Advantage, and Gender Differences in Schooling Outcomes: Evidence from the Birthweight Differences of Chinese Twins
Provedor de dados: 31
Autores: Rosenzweig,   Mark R.; Zhang,   Junsen.
Data from two surveys of twins in China are used to contribute to an improved  understanding of the role of economic development in affecting gender differences in the trends in, levels of, and returns to schooling observed in China and in many developing countries in recent decades. In particular, we explore the hypothesis that these phenomena reflect differences in comparative advantage with respect to skill and brawn between men and women in the context of changes in incomes, returns to skill, and/or nutritional improvements that are the result of economic development and growth.
Tipo: Working Paper
Palavras-chave: Schooling; Gender; Twins; China; Health Economics and Policy; International Development; Labor and Human Capital; Productivity Analysis; J24; J16; I15; I25; O15.
Ano: 2012
URL: http://purl.umn.edu/121672

GROWTH AND SURVIVAL IN WHEAT FARMING:  THE IMPACT OF LAND EXPANSION AND BORROWING RESTRAINTS
Provedor de dados: 31
Autores: Held,   Larry J.; Helmers,   Glenn A.
Simulation is used to examine impacts of land expansion strategies and self-imposed borrowing limits upon growth and survival odds of a dryland wheat farm over a 15-year period.  Compared to share-rent expansion, purchasing land shows only marginally great growth at best, with substantially higher odds of firm failure.  A tradeoff of enhanced survival at the expense of reduced growth results from more conservative borrowing for land.  The marginal value of liquidity (for assisting survival) is relatively high at lower levels of credit reserves.
Tipo: Journal Article
Palavras-chave: Agricultural Finance; Crop Production/Industries; Land Economics/Use.
Ano: 1981
URL: http://purl.umn.edu/32577

Does Farm Size Really Converge? The Role of Unobserved Farm Efficiency
Provedor de dados: 31
Autores: Dolev,   Yuval; Kimhi,   Ayal.
We analyze the growth of family farms in Israeli cooperative villages between 1981 and 1995, using longitudinal data. We use instrumental variables to account for the endogeneity of initial farm size, and correct for selectivity due to farm survival. We also include a technical efficiency index, derived from the estimation of a stochastic frontier production model, as an explanatory variable. We find that technical efficiency is an important determinant of farm growth, and that not controlling for technical efficiency could seriously bias the results. The size distribution of Israeli family farms is found to be mostly diverging, while without technical efficiency farm growth seemed to be predominantly random.
Tipo: Working or Discussion Paper
Palavras-chave: Farm size; Farm growth; Farm survival; Instrumental variables; Sample selection; Technical efficiency; Farm Management; Productivity Analysis; Q12; L25; C34.
Ano: 2008
URL: http://purl.umn.edu/45778

Rural Growth and the Rural Capital Account
Provedor de dados: 31
Autores: Kilkenny,   Maureen; Partridge,   Mark D.
This technical report contributes to NC 1014's efforts to understand and improve the contribution of rural financial markets for rural growth. We investigate the ‗export-led growth' hypothesis about rural development, with particular emphasis on the implications of regional current account surpluses/capital account deficits, and deposits in commercial banks. We find that in just one case, subsequent rural deposits depend positively on prior rural export sector activity. But these deposits do not appear to support local investment: both subsequent rural employment and rural income growth are significantly negatively correlated with initial export intensity.
Tipo: Journal Article
Palavras-chave: Community/Rural/Urban Development.
Ano: 2008
URL: http://purl.umn.edu/48145

International Tourism and Economic Growth: A Panel Data Approach
Provedor de dados: 31
Autores: Sequeira,   Tiago Neves; Campos,   Carla.
On average, tourism-specialized countries grow more than others. This fact is inconsistent with economic theory as, in particular, endogenous growth theory suggests that economic growth is linked with: (1) sectors with high intensity in R&amp;D and thus high productivity; (2) large scale. In this paper, we use panel data methods to go further in treating the endogeneity problem. In general and contrary to previous works, we conclude that tourism, on its own, cannot explain the higher growth rates of these countries.
Tipo: Working or Discussion Paper
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2005
URL: http://purl.umn.edu/12145

Analysis of the Contribution of Total Factor Productivity to Agricultural Yield in Anhui Province
Provedor de dados: 31
Autores: Xia,   Yan-lei.
By analyzing data concerning agricultural development from 1981 to 2010 in Anhui Province, the total factor productivity and growth rate of agriculture from 1981 to 2010 are estimated empirically. By dividing years from 1981 to 2010 into several subintervals, this paper evaluates and analyzes initial stage of reform and opening up, soft landing stage, the stage of financial crisis, the stage of subprime mortgage crisis and the impact of ail factors on total factor growth rate of agriculture. Then it analyzes the contribution of growth of total factor productivity to total geld of agricultural economy. The research finds that the growth of total factor productivity in Anhui Province is significant to agricultural development.
Tipo: Journal Article
Palavras-chave: Total factor productivity of agriculture; Elasticity of output; Empirical estimation; China; Agribusiness.
Ano: 2011
URL: http://purl.umn.edu/117247

Policy Reform Impact on Food Manufacturing
Provedor de dados: 31
Autores: Celikkol,   Pinar; Dunn,   James W.; Stefanou,   Spiro E.
The impact of agricultural policies and their reform is of major concern when addressing issues of growth, innovation and consolidation in the food manufacturing sector. Growth is one of the forces fueling the globalization of food manufacturing activities. Market- and policy-driven forces present a myriad of opportunities to influence growth and reorientation of patterns at the nexus where food manufacturing links the food system. The productivity and international competitiveness of the food manufacturing sector must be evaluated in the context of governmental incentives, international standards and the emerging supply- and value-chains.
Tipo: Conference Paper or Presentation
Palavras-chave: Total factor productivity growth; Intercountry impacts; Dairy products; Meat products; Sugar; Agribusiness; Agricultural and Food Policy.
Ano: 2003
URL: http://purl.umn.edu/15743

DEMOCRACY, RENT SEEKING, PUBLIC SPENDING AND GROWTH
Provedor de dados: 31
Autores: Mohtadi,   Hamid; Roe,   Terry L.
Does democratization imply faster growth, less corruption and less inefficiency? Past studies yield ambiguous results on the effects of democracy on economic performance and growth. We develop a simple two-sector endogenous growth model that shows both very young and mature democracies grow faster than countries in mid stages of democratization, producing a 'U' effect. This effect results from the pattern of rent seeking as it diverts from the provision of public goods. Rent-seekers act as monopolistic competitors. Initially, more democracy increases their number, raising aggregate rents. However, rents per rent-seeker fall with the number of rent seekers, aggregate rents fall in mature democracies. Thus, rents show an 'inverted-U' effects in relation to...
Tipo: Working or Discussion Paper
Palavras-chave: Political Economy.
Ano: 2001
URL: http://purl.umn.edu/12981

Changes in Public Sector Employment with a Focus on Wisconsin 1993 to 2004
Provedor de dados: 31
Autores: Deller,   Steven C.; Maher,   Craig.
This study examines patterns of total employment growth and growth in the public sector. We use data from the 50 states with a focus on the 1993 to 2004 time period. We define the public sector with respect to state government as well as local government with the latter including counties, municipalities, K-12 public schools and special districts. We maintain that given the labor intensive nature of the public sector we can assess the size of the government by monitoring public sector employment. The results clearly suggest that Wisconsin's public sector, as measured by employment, is not "out of control" and growth in the public sector is a natural by-product of growth in the overall economy.
Tipo: Working or Discussion Paper
Palavras-chave: Labor and Human Capital.
Ano: 2006
URL: http://purl.umn.edu/12605

SUSTAINABLE GROWTH IN AGRICULTURAL PRODUCTION: POETRY, POLICY AND SCIENCE
Provedor de dados: 31
Autores: Ruttan,   Vernon W.
In this paper I review the evolution of the sustainability concept.  This is followed by a description of three "classical" systems of sustainable agriculture.  None of these systems were or are capable of generating growth of output consistent with modern rates of growth in demand.  I then turn to three unresolved analytical issues that continue to divide the conventional resource economics and the sustainable development communities.  In a closing section I argue sustainable growth in agricultural production should be viewed as a research agenda rather than as a package of practices that is available to producers whether in developed or developing countries.
Tipo: Working or Discussion Paper
Palavras-chave: Environmental Economics and Policy; International Development.
Ano: 1993
URL: http://purl.umn.edu/13415

DEMAND FOR BEEF FROM CATTLE ADMINISTERED GROWTH HORMONES OR FED GENETICALLY MODIFIED CORN: A COMPARISON OF CONSUMERS IN FRANCE, GERMANY, THE UNITED KINGDOM, AND THE UNITED STATES
Provedor de dados: 31
Autores: Lusk,   Jayson L.; Roosen,   Jutta; Fox,   John A.
This study compares consumer valuations of beef steaks from cattle produced without growth hormones or genetically modified corn in France, Germany, the United Kingdom, and the United States.  In general, European consumers place a higher value on beef from cattle that have not been administered growth hormones and/or fed genetically modified corn than United States consumers.  There is a larger divergence between the two cultures with regard to the issue of biotechnology and genetic engineering than with the issue of growth hormones.  Results suggest that liberalizing trade policy for hormone-treated beef may be welfare reducing for the European Union.
Tipo: Conference Paper or Presentation
Palavras-chave: Consumer/Household Economics; Demand and Price Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2001
URL: http://purl.umn.edu/20684

A Model of Choice between Current Consumption and Future Economic Growth
Provedor de dados: 31
Autores: Arifa,   Ali; Gan,   Christopher E.C.
This paper uses a newly proposed working definition of sustainability based upon the Rawlsian principle of justice to develop a simple aggregative model of growth. The model explores the issue of choice between current consumption and future economic growth through changes in capital stock. It is shown that sustainable growth limits the range of this choice, but does not determine it. The model used is only illustrative, but may be useful as a pointer for future research and comparison of sustainability modelling techniques.
Tipo: Journal Article
Palavras-chave: International Development.
Ano: 1996
URL: http://purl.umn.edu/12303

CLIMATE AND SCALE IN ECONOMIC GROWTH
Provedor de dados: 31
Autores: Masters,   William A.; McMillan,   Margaret S.
This paper introduces new data on climatic conditions to empirical tests of growth theories.  We find that, since 1960, temperate countries have converged towards high levels of income while tropical nations have converged towards various income levels associated with economic scale and the extent of the market.  These results hold for a wide range of tests.  A plausible explanation is that temperate regions' growth was assisted by their climate, perhaps historically for their transition out of agriculture into sectors whose productivity converges across countries, while tropical countries' growth is relatively more dependent on gains from specialization and trade.
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 2001
URL: http://purl.umn.edu/11845

Modelling Corruption in a Cobb-Douglas Production Function Framework
Provedor de dados: 31
Autores: Farida,   Moe; Ahmadi-Esfahani,   Fredoun Z.
In this paper, we extend the Solow growth model to include corruption as a determinant of the multifactor productivity using a Cobb-Douglas production function framework. In addition to the classical components of any growth model (output, labor, capital), we incorporate corruption as a determinant of government expenditure, investment and foreign aid. It is proposed that output and growth are influenced by the level of corruption. This model is to be tested empirically to trace the corruptive behaviour in Lebanon based on the available time series data.
Tipo: Conference Paper or Presentation
Palavras-chave: Corruption; Economic growth; Investment; Government expenditure; Foreign aid; International Development.
Ano: 2007
URL: http://purl.umn.edu/10400

Economic Growth and Agro-environmental Fragility——Based on the Provincial Panel Data Analysis
Provedor de dados: 31
Autores: Xiong,   Wen.
The agro-environmental fragility of 31 provinces and regions (except Hong Kong, Macao and Taiwan) of our country during the years 1978-2004 is measured by adopting the method of principal component analysis. With the support of analytical model of panel data, regressive analysis is achieved from the aspects of introducing regional differences, not introducing regional differences, existing industrial differences and not existing industrial differences respectively. The conclusion points out that there are both industrial and regional differences in the economic growth effect on the environmental fragility; these differences are reflected on the industrial or regional development levels. The higher the development level it is, the less the effect it is when...
Tipo: Journal Article
Palavras-chave: Economic growth; Agro-environmental fragility; Principal component analysis， China; Agribusiness.
Ano: 2010
URL: http://purl.umn.edu/101899

Economic growth and pollution in the long run: the case of carbon dioxide
Provedor de dados: 31
Autores: Burke,   Paul J.
The concept underpinning the Environmental Kuznets Curve is that economic growth results in reduced pollution in the long run. In this report, an extension of Andreoni and Levinson’s (2001) theoretical model is presented. It demonstrates that an Environmental Kuznets Curve relationship can occur because high incomes allow more adoption of low-emission technologies at higher income levels. Evidence on the determinants of carbon dioxide emissions changes for OECD countries over the period 1961-2004 is presented. It highlights the importance of technology adoption in explaining whether countries have achieved emissions reductions at the same time as experiencing long-run economic growth. However, it is shown that technology adoption is affected by policy...
Tipo: Report
Palavras-chave: Economic growth; Pollution; Carbon dioxide; Environmental Kuznets curve Research; Environmental Economics and Policy.
Ano: 2008
URL: http://purl.umn.edu/94804

Growth curve of buffalo grazing on a grass pasture
Provedor de dados: 96
Autores: Alves,Teresa Cristina; Franzolin,Raul.
ABSTRACTThe objective of this study was to evaluate the performance of 17 buffaloes (Mediterranean), from birth to slaughter age (720 days) with monthly measures of weight, thoracic perimeter, body length, and height at withers. At the end of experimental period, the animals were separated into two different groups for statistical analysis according to slaughter weight: light body weight (LBW, mean 517 kg) and heavy body weight (HBW, mean 568 kg). Buffalo growth occurs in the same way up to weaning age, and after that, two distinct groups grow in different forms in the same conditions of management and feeding. Body weight can be estimated according to age, thoracic perimeter, height, and length, showing high correlations. Buffaloes show growth in a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body weight; Growth; Performance.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015000900321

Growth of Brazilian beef production: effect of shocks of supply and demand
Provedor de dados: 123
Autores: Silva Neto,Waldemiro Alcântara da; Bacchi,Mirian Rumenos Piedade.
With the considerable growth of beef production in Brazil and the growth in beef exports as a backdrop, the main objective of this study is to identify the factors responsible for the excellent performance of this agribusiness sector. Conducting this study required the construction of a theoretical model that was capable of supporting the specification of the adjusted econometric model using vector autoregression with identification by the Bernanke process. The findings show that the main determinant of beef cattle growth and Brazilian beef exports is increased animal stock. Furthermore, productivity has a positive, albeit more modest, effect on beef production and exports. The results show that the increase of the number of cattle reduces costs to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beef cattle; Exports; Animal stock; Trading.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-20032014000200001

Critical points on growth curves in autoregressive and mixed models
Provedor de dados: 63
Autores: Pinho,Sheila Zambello de; Carvalho,Lídia Raquel de; Mischan,Martha Maria; Passos,José Raimundo de Souza.
Adjusting autoregressive and mixed models to growth data fits discontinuous functions, which makes it difficult to determine critical points. In this study we propose a new approach to determine the critical stability point of cattle growth using a first-order autoregressive model and a mixed model with random asymptote, using the deterministic portion of the models. Three functions were compared: logistic, Gompertz, and Richards. The Richards autoregressive model yielded the best fit, but the critical growth values were adjusted very early, and for this purpose the Gompertz model was more appropriate.
Tipo: Info:eu-repo/semantics/article
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000100004

Allelopathic effects of aqueous extracts of Artistolochia esperanzae O.Kuntze on development of Sesamum indicum L. seedlings
Provedor de dados: 39
Autores: Gatti,Ana Beatriz; Ferreira,Alfredo Gui; Arduin,Marcos; Perez,Sonia Cristina Gualtieri de Andrade.
Aristolochia esperanzae is a climbing plant that occurs in the savanna regions of Brazil. The aim of this work was to identify the effects of aqueous extracts of A. esperanzae on germination, root growth and xylem cell development of sesame seedlings. Leaf and shoot extracts were prepared at concentrations of 1.5 and 3%. Extracts caused marked changes in germination and seedling growth with greatest inhibition produced by root extracts. Morphological changes and decreased growth and development of seedlings were also observed. The extracts of A. esperanzae caused a reduction of 50% in the size of root xylem cells and marked changes in the primary root and in the number of secondary roots.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: "Papo-de-perú"; Allelopathy; Root growth; Xylem development; Savanna.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062010000200016

Variation in quantitative vessel element features of Juglans regia wood in the western black sea region of Turkey
Provedor de dados: 115
Autores: Yaman,Barbaros.
Variations in quantitative vessel element characters of Juglans regia L. wood were studied in relation to altitude and growth-ring width. Multiple regression analysis using altitude and growth-ring width as independent variables were performed. Significant correlations were obtained for tangential vessel and radial vessel diameter (p&lt; 0.001), vulnerability ratio and xeromorphy ratio (p&lt;0.01), and for the number of vessels per group (p&lt;0.05). Vessel frequency is not correlated with independent variables. Non-anatomical factors (altitude and growth-ring width) explain 40.4-80.4% of variation for dependent variables.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Juglans regia; Altitude; Ecology; Growth-rings; Wood anatomy.
Ano: 2008
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952008000300010

Development and growth curve of the pine cones of Araucaria angustifolia (Bert.) O. Ktze, in the region of Curitiba - PR
Provedor de dados: 52
Autores: Anselmini,Justina Inês; Zanette,Flávio.
The objectives of this work were to describe the development and growth rate of the pine cones of Araucaria angustifolia during and after the pollination period, to identify the period of maximum growth of the cones and the period of pollination and maturation of the pine nuts. The adult individuals were found at the Setor de Ciencias Agrarias of the UFPR, in Curitiba - PR. Collections and measurements of pine cones were made in 2003 and 2005. The diameter and the length of the pine cones were measured 15 different times in both the years. In the studied environmental conditions, the period between the pollination and maturation of the pine nuts was 20 months. The maximum pine cone growth was achieved between October and January after the pollination, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Parana-pine; Strobili; Pollination.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000400003

Growth capacity of thermotolerant campylobacters in culture media supplemented with pig and cow blood
Provedor de dados: 52
Autores: Tresierra-Ayala,Álvaro; Navas,Manuel; Flores,Josué; Perea,Ramsés; Huanaquiri,Juan; Bendayán,María; Fernández,Heriberto.
In this work 60 thermotolerant Campylobacter strains (37 C. jejuni and 23 C. coli) isolated from the cows, pigs, chickens and ducks (15 strains of each type of animal) were used to establish their growth capacity on media containing cow or swine blood as potential substitutes of sheep or horse blood. The growth capacity was assessed by viable counts on cow and swine blood media, using the modified Miles and Misra method. Campylobacter strains showed better growth in the media supplemented with pig or sheep blood than with cow blood. Thus, the use of pig blood could be a supplement for Campylobacter culture medium, when there was no availability of sheep or horse blood.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Campylobacter; Culture media; Cow blood; Swine blood.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000500011

Anatomia do caule de Lycopersicon Esculentum Mill., submetido a diferentes tratamentos com reguladores vegetais
Provedor de dados: 52
Autores: Martins,Maria Bernadete Gonçalves; Castro,Paulo Roberto de Camargo e.
The effects of plant growth regulators GA3 50 mg. L-1, NAA 100 mg. L-1, CCC 1500 mg.L-1 and SADH 3000 mg.L-1 on stem anatomy of Lycopersicon esculentum Mill cv. Ângela Gigante were studied. Two sets of experiments were carried out in greenhouse during two separte periods. Anatomical studies , revealed that growth promotors induced increased xylem thickness and increased the number of tracheary elements while the growth retardants decreased xylem thickness and induced fiber formation.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant growth regulators; Anatomy; Stem; Lycopersicon esculentum.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131998000200014

Behaviour of L. monocytogenes in sliced, vacuum-packed mortadella
Provedor de dados: 58
Autores: Bersot,Luciano dos Santos; Gillio,Cíntia; Tavolaro,Paula; Landgraf,Mariza; Franco,Bernadette Dora Gombossy de Melo; Destro,Maria Teresa.
This study evaluated the growth of naturally occurring L. monocytogenes in sliced, vacuum-packed mortadella samples during storage at 5ºC until the expiration date. Tukey's test indicated that counts of L. monocytogenes on 0, 10, 20, 30 and 40 days of storage were significantly different (p&lt;0.05), indicating growth during shelf life. In three trials, the mean increase was 1.72 log cycles. Vacuum packing and storage under refrigeration were not effective in controlling the growth of L. monocytogenes in sliced mortadella, indicating that good manufacturing practices and implemented HACCP programs are essential to assure safety of this product.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Listeria monocytogenes; Growth; Sliced mortadella; Vacuum-packing.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000300020

Growth of enterotoxin producing Bacillus cereus in meat substrate at 10ºC and 30ºC
Provedor de dados: 58
Autores: Soares,Celina Mara; Kabuki,Dirce Yorika; Kuaye,Arnaldo Yoshiteru.
The behaviour of enterotoxin-producing Bacillus cereus in meat was investigated by inoculating spore suspensions of five cultures into meat substrate (pH 5.8) and incubating at 10ºC and 30ºC. The bacterial populations were evaluated after different times by plate counts in nutrient agar. All the cultures presented growth at 30ºC with the generation time varying from 28.8 to 36.0 minutes. Three cultures also presented growth at 10ºC with generation times between 10.16 and 28.38 h. Considering the results, it was concluded that meat kept at abusive temperatures would be subject to development of this microorganism.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacillus cereus; Meat; Growth.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000400022

Ecophysiology of coffee growth and production
Provedor de dados: 61
Autores: DaMatta,Fábio M.; Ronchi,Cláudio P.; Maestri,Moacyr; Barros,Raimundo S.
After oil, coffee is the most valuable traded commodity worldwide. In this review we highlighted some aspects of coffee growth and development in addition to focusing our attention on recent advances on the (eco)physiology of production in both Coffea arabica and C. canephora, which together account for 99% of the world coffee bean production. This review is organized into sections dealing with (i) climatic factors and environmental requirements, (ii) root and shoot growth, (iii) blossoming synchronisation, fruiting and cup quality, (iv) competition between vegetative and reproductive growth and branch die-back, (v) photosynthesis and crop yield, (vi) physiological components of crop yield, (vii) shading and agroforestry systems, and (viii) high-density...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arabica conilon and robusta coffee beverage quality density planting die-back flowering photosynthesis; Shading.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202007000400014

Radiation levels of UV-A and UV-B on growth parameters and coumarin content in guaco
Provedor de dados: 65
Autores: Alves,Luciano; Deschamps,Cícero.
ABSTRACT:  Guaco is a medicinal plant species containing coumarin, a secondary metabolite whose concentration is influenced by various factors, such as the level of exposure to UVA (315-400 nm) and UVB (280-315 nm) radiation, age of the plant, and position of the storage organ in the plant. This study aimed to assess the effect of different blocking levels of UVA and UVB radiation on growth parameters and coumarin content of two guaco accessions. Treatments did not affect any of the growth parameters assessed, except leaf area. Coumarin content was higher in leaves collected from the upper canopy and with unblocked exposure to UVA and UVB.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mikania glomerata Spreng; 1-2-benzopyrone; Secondary metabolism; Growth analysis; Environmental factors.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000600403

Growth and feed utilization of the shrimp Farfantepenaeus paulensis fed diets containing different marine protein sources
Provedor de dados: 65
Autores: Cavalli,Ronaldo Olivera; Zimmermann,Sérgio; Speck,Roger Crippa.
Five isonitrogenous and isoenergetic diets containing different protein sources (fish, squid and mussel meals and their combinations at the proportions of 40, 30 and 30% or 60, 20 and 20%) were fed for 28 days to Farfantepenaeus paulensis. Growth performance and feed utilization of shrimp fed the fish meal-based diet was comparatively inferior to those fed other protein sources or their combinations. This indicates that fish meal may not be the best protein source for F. paulensis. Feeds containing a mixture of protein sources are better utilized by F. paulensis and therefore result in significantly higher growth than those containing a single protein source.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Shrimp; Farfantepenaeus paulensis; Growth; Feed utilization; Protein sources.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782004000300036

Growth of symbiont fungi of some higher attine ants in mineral medium
Provedor de dados: 65
Autores: Loeck,Alci Enimar; Pierobom,Carlos Roberto; Gusmão,Luciana Guerra de; Afonso,Ana Paula.
Bioassays were conducted to verify the possibility of culturing the symbiont fungus of some higher attine in mineral medium and finding out the optimum pH value for their satisfactory mycelial growth. Three organic media and one mineral medium were inoculated with isolates from Atta sexdens piriventris and Acromyrmex heyeri. In mineral medium different values of pH (4.0, 5.0, 6.0 and 7.0) were tested with isolates from A. laevigata and A. laticeps. The behavior of isolates (colony diameter) was different in the mineral medium. However, even the one which grew the least of all provided enough mycelial for RAPD analysis. The best range of pH for fungal growth in mineral medium was between 4.0 and 5.0
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leaf-cutting ants; Symbiont fungus; Mycelial growth.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782004000100012

ALLOMETRIC GROWTH OF PRIMAL CUTS AND TISSUES IN THE PIG
Provedor de dados: 65
Autores: Siewerdt,Frank; Farias,José Viriato da Silva; Osório,José Carlos da Silveira; Jacondino,Ilo Francisco Ribeiro.
Data from 82 purebred and crossbred Large White and Duroc barrows and gilts were used to describe the growth of carcass primal cuts, of tissues, and of several organs. Pigs were allowed ad libitum to a conventional diet, which contained com and soybean meal. Pigs were weighted weekly and were slaughtered when attained a liveweight over 90kg. An allometric pattern of growth was assumed. Within the observed range of liveweight, the carcass grew slower than the whole animal. An increase of carcass weight corresponds to a similar increase of lean, but also corresponds to a larger increase of fat tissues. A suggestion to slaughter pigs near to 90kg of liveweight is presented, in order to obtain leaner carcasses.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometric growth; Carcasses; Pigs.
Ano: 1994
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781994000300031

Динамика мгновенных и средних скоростей роста красной водоросли Gracilaria verrucosa (Rhodophyta) при культивировании в лабораторных условиях
Provedor de dados: 13
Autores: Тренкеншу, Р. П.; Парчевский, В. П.; Чубчикова, И. Н.
Исследована динамика мгновенных и средних скоростей роста G. verrucosa Черного моря в лабораторных условиях с мая по ноябрь 1992 г. Мгновенные абсолютные и относительные скорости были восстановлены из экспериментальных данных с помощью аппроксимации данных кубическими сплайнами c последующим дифференцированием аналитического выражения сплайн-регрессии (Parchevsky, Parchevsky, 1998). Мгновенная абсолютная скорость роста есть чистая продукция водоросли в данных условиях. Мгновенные скорости являются чувствительным показателем для изучения динамики роста и продукции водоросли. Высокая чувствительность метода позволила зарегистрировать влияние даже небольших изменений температуры и света (2 - 3 °С и 4 mE м-2 с-1, соответственно) на скорость роста водоросли....
Tipo: Journal Contribution
Palavras-chave: Мгновенная и средняя скорость роста; Красные водоросли; Gracilaria verrucosa; Черное море; Instantaneous and mean growth rates; Red seaweeds; The Black Sea Growth rate Seaweeds Seaweeds Growth rate http://aims.fao.org/aos/agrovoc/c_14154 http://aims.fao.org/aos/agrovoc/c_16130.
Ano: 2002
URL: http://repository.ibss.org.ua/dspace/handle/99011/396

Croissance de l'huître creuse Crassostrea gigas dans le bassin de Marennes-Oléron de 1987 à 1998
Provedor de dados: 5
Autores: Le Moine, Olivier; Geairon, Philippe.
This report aims to study the oyster Crassostrea gigas growth and production over a 12 years time's span in the Bay of Marennes Oleron. Results of 12 years of oyster growth did not show any significant oyster biological productivity decrease, nor trend. In contrast, annual growth showed a large variability, which will be correlated with environmental conditions. Moreover, annual growth variability was greater than the variability due to site location, but the Ronce experimental site. The later, located in the south west part of the Bay of Marennes Oleron, has been the leading oyster growth site since 1989. The annual shell growth variability was greater than oyster dry meat weight fluctuation. Both 1990 and 1991 years were characterized by the largest...
Tipo: Text
Palavras-chave: Marennes Oleron bay; Crassostrea gigas; Monitoring network; Oyster growth and production; Marennes Oléron; Crassostrea gigas; Réseau de surveillance; Production; Croissance.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/2000/rapport-1588.pdf

Self-feeding behavior changes induced by a first and a second generation of domestication or selection for growth in the European sea bass, Dicentrarchus labrax
Provedor de dados: 5
Autores: Millot, Sandie; Pean, Samuel; Chatain, Beatrice; Begout, Marie-laure.
Among the strategies that can be used to improve fish welfare in a rearing environment, domestication and/or selective breeding was proposed to minimize fish responsiveness to husbandry practices. To verify this hypothesis on a recently domesticated species, the sea bass Dicentrarchus labrax, two experiments were realized, each using two populations differing according to their level of domestication or selection. For the first experiment, we used one population produced from wild parents (Wild; initial body mass: 106 +/- 3 g), and one population from parents selected for growth for one generation (Selected 1; initial body mass: 129 +/- 4 g). For the second experiment, we used one population produced from parents domesticated for two generations...
Tipo: Text
Palavras-chave: Feed intake; Feeding rhythm; Specific growth rate; Adaptation capacities; Fish welfare.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00035/14604/11924.pdf

Modalités particulières de croissance liées au milieu abyssal chez les Bathycrinidae (Echinodermes, Crinoïdes pédonculés)
Provedor de dados: 5
Autores: Duco, A; Roux, M.
An analysis of the individual growth of the deep-sea stalked crinoid of the Norwegian Sea, Bathycrinus carpenreri (Echinodermata) is discussed. Two growth stages appear: the first one is without growth lines, the second shows a succession of growth lines due to cessation or slowing down of growth between growth cycles.  X ray photographs reveal growth lines within the ossicles of the stalk. The onset of gonad development would be correlated with the first appearance of growth lines, although gametogenesis could be continuous, as in, most deep-sea species.  A hypothesis of annual growth rings and seasonal nutritive flux implies that the oldest specimen analyzed would be from 10 to 15 years old, in agreement with a previous estimate for the isocrinid stalked...
Tipo: Text
Ano: 1981
URL: http://archimer.ifremer.fr/doc/1981/publication-5367.pdf

Income Diversification and Poverty in the Northern Uplands of Vietnam
Provedor de dados: 31
Autores: Minot,   Nicholas; Epprecht,   Michael; Anh,   Tran Thi Tram; Trung,   Le Quang.
Urbanization and income growth within developing countries have created large markets for meat, milk, fish, fruits, and vegetables, while trade liberalization and foreign investment have connected farmers in developing countries with high-income consumers in other countries. In the first half of the 1990s, the International Food Policy Research Institute (IFPRI) carried out a series of studies on the impact of agricultural commercialization on farm income and nutrition, finding that the effects were generally positive. More recently, IFPRI research explored the “livestock revolution” and its effect on small farmers, as well as the dramatic growth in international trade in fish and seafood, in which developing countries play an increasingly important role....
Tipo: Report
Palavras-chave: Poverty; Vietnam; Northern; Income; Rural conditions; Consumer/Household Economics; Food Security and Poverty.
Ano: 2006
URL: http://purl.umn.edu/37884

Seedling growth of irrigated rice as a function of seed treatment with gibberellic acid
Provedor de dados: 22
Autores: Guadagnin, Cristina Mayumi Ide; Schuch, Luis Osmar Braga; Venske, Eduardo; Zimmer, Paulo Dejalma; Aumonde, Tiago Zanatta.
This study aimed to evaluate the early growth stages of irrigated rice (Oryza sativa L.) seedlings from cultivars SCS-112, BRS-7 Taim, BR IRGA 410 and IRGA 417, under three different temperatures, i.e. 15, 20 and 25 °C, as a result of seed imbibition in a gibberellic acid (GA3) solution at concentrations of  zero, 150, 300, 450, 600 and 750 mg L-1. The lengths of the shoot and the primary root of seedlings were recorded at three, seven and 21 days from sowings on germination paper. Interactions between the main factors were observed for all the response variables. Rice cultivars have differential sensitivity to variation in the concentration of gibberellic acid on seed treatment according to the temperature and the time of evaluation. Cultivar BRS-7 Taim...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Environmental stress; Growth regulators; Oryza sativa L.; Seed vigor.
Ano: 2017
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/14299

EFFECTS OF ALUMINUM ON SEED GERMINATION AND INITIAL GROWTH OF PHYSIC NUT SEEDLINGS
Provedor de dados: 196
Autores: Machado, Juan Sotta; Steiner, Fábio; Zoz, Tiago; Honda, Guilherme Bento; Oliveira, Bruno Leminski Neto de.
Aluminum (Al3+) toxicity is one of the major factors that limit plant growth and crop yield in acid soils. The phytotoxic effects of aluminum on seed germination and initial growth of physic nut (Jatropha curcas L.) seedlings were investigated in the present study. Physic nut seeds were subjected to five levels of aluminum [0 (control), 20, 40, 60 and 80 mg L–1], using the solution-paper method, with eight replications. The experimental unit consisted in a germitest paper roll with 25 physic nut seeds.Treatments were evaluated based on the following tests: first count of germination test (7 days), total germination (12 days) and initial growth of physic nut seedlings (12 days). The addition of 80 mg L–1of Al reduced the first count of germination test...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fisiologia de Sementes.
Ano: 2015
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/248

Growth analysis of sweet pepper cultivated in coconut fiber in a greenhouse
Provedor de dados: 75
Autores: Charlo,Hamilton César de O; Oliveira,Sueyde F de; Castoldi,Renata; Vargas,Pablo F; Braz,Leila T; Barbosa,José Carlos.
Knowledge about the growth of crops allows the planning of rational cultivation methods which contribute to achieve greater potential of plant species, besides supplying information for the construction of descriptive mathematical models of growth. The growth curve of sweet pepper (Eppo hybrid), cultivated in coconut fiber in a greenhouse with fertirrigation, was determined. The experiment consisted initially of 160 plants divided into four blocks. Two plants were analyzed per block every 21 days after transplanting, ending at 189 days after transplant. The cultivation was carried out in plastics pots of 13 L containing coconut fiber, which were arranged in double rows, spaced 0.5 x 0.8 m between simple rows and 1.1 m between double rows. In each harvest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capsicum annuum; Growth analysis; Fertirrigation.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362011000300010

Tomato growth analysis across three cropping systems
Provedor de dados: 75
Autores: Antônio,Adilson C; Silva,Derly JH; Araújo,Wagner L; Cecon,Paulo R.
ABSTRACT The objective of this work was to analyze the growth of the Upiã tomato cultivar in the Vertical, Crossed Fence and Viçosa cultivation systems, in order to obtain explanations for the productive gains achieved in the Viçosa system. The experiment was conducted in Viçosa, Minas Gerais State, Brazil, from August 21st to December 5th, 2012, in the scheme of subdivided plots, being the plots represented by the cultivation systems: Vertical, using tape, 1.0×0.5 m spacing; Crossed Fence, staked with bamboo, 1.0x0.5 m spacing; and Viçosa, using tape, 2.0x0.2 m spacing. The subplots were composed by the sampling times of the plants: 15, 30, 45, 60 and 75 days after transplanting. The experimental design was in randomized blocks, with four replications....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum lycopersicum; Ecophysiology; Physiological indices.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362017000300358

Contribution of several nitrogen sources to growth of Alexandrium catenella during blooms in Thau lagoon, southern France
Provedor de dados: 5
Autores: Collos, Y; Vaquer, A; Laabir, M; Abadie, Eric; Laugier, Thierry; Pastoureaud, Annie; Souchu, Philippe.
A monitoring program with a weekly sampling frequency over a 15-month period indicates that urea concentrations above a certain threshold level may trigger the blooms of Alexandrium catenella in Thau lagoon. However, urea concentrations were also sometimes related to ammonium and dissolved organic nitrogen concentrations, indicating that the role of urea may not be a direct one. An original approach is used to assess the relative contribution of several nitrogen sources (nitrate, nitrite, ammonium, urea) to growth of A. catenella by comparing nitrogen uptake rates to nitrogen-based growth rates estimated from dilution experiments during four blooms over a 4-year period (2001-2004) in Thau lagoon. Nitrate and nitrite contributed 0.1-14% and 0.1-5%...
Tipo: Text
Palavras-chave: Uptake kinetics; Ammonium; Urea; Growth; Nitrogen; HAB; Alexandrium catenella.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-6454.pdf

Microcarriers Based on Glycosaminoglycan-Like Marine Exopolysaccharide for TGF-β1 Long-Term Protection
Provedor de dados: 5
Autores: Zykwinska, Agata; Marquis, Melanie; Godin, Mathilde; Marchand, Laetitia; Sinquin, Corinne; Garnier, Catherine; Jonchere, Camille; Chedeville, Claire; Le Visage, Catherine; Guicheux, Jerome; Colliec-jouault, Sylvia; Cuenot, Stephane.
Articular cartilage is an avascular, non-innervated connective tissue with limited ability to regenerate. Articular degenerative processes arising from trauma, inflammation or due to aging are thus irreversible and may induce the loss of the joint function. To repair cartilaginous defects, tissue engineering approaches are under intense development. Association of cells and signalling proteins, such as growth factors, with biocompatible hydrogel matrix may lead to the regeneration of the healthy tissue. One current strategy to enhance both growth factor bioactivity and bioavailability is based on the delivery of these signalling proteins in microcarriers. In this context, the aim of the present study was to develop microcarriers by encapsulating...
Tipo: Text
Palavras-chave: Exopolysaccharide; Growth factor; Microparticles; Microfluidics; Bioactivity.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00477/58882/61432.pdf

Relationships between age, growth, diet and environmental parameters for anchovy (Engraulis encrasicolus L.) in the Bay of Benisaf (SW Mediterranean, west Algerian coast)
Provedor de dados: 5
Autores: Bacha, Mahmoud; Moali, Aissa; Benmansour, Nasr-eddine; Brylinski, Jean-michel; Mahe, Kelig; Amara, Rachid.
Age, growth and diet of anchovy were studied for the first time from samples collected in the Bay of Benisaf (west Algerian coast) during summer (spawning period) and autumn (recruitment period) 2007. Age structure and growth parameters were determined by otolith (sagitta) analyses. The von Bertalanffy growth function fitted to age-length data showed that most of anchovy growth is achieved during the first year of life, suggesting that this stock is primarily supported by the smallest age groups and has a strong dependence on recruitment. There were no significant differences between males and females, and pooled mean parameters were: L infinity = 15.61 cm, k = 0.75 per year and to, -1.32 years. Whatever the age-class anchovy is strictly zooplanktivorous....
Tipo: Text
Palavras-chave: Engraulidae; Engraulis encrasicolus; MED; West Algeria; Anchovy; Growth; Age; Diet; Ontogenetic.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00011/12212/9046.pdf

Regulation of the somatotropic axis by dietary factors in rainbow trout (Oncorhynchus mykiss)
Provedor de dados: 5
Autores: Gomez Requeni, P; Calduch Giner, J; De Celis, S; Medale, Francoise; Kaushik, Sadasivam; Perez Sanchez, J.
The activity of the somatotropic axis was analysed in juvenile rainbow trout (Oncorhynchus mykiss) fed either a fishmeal-based diet (FM) or graded levels of plant proteins to replace 50 % (PP50 diet), 75 % (PP75 diet) or 100 % (PP100 diet) of the fishmeal protein. For this purpose, partial cloning and sequencing of the gene encoding rainbow trout growth hormone receptor (GHR) was first accomplished by RT-PCR, using degenerate primers based on the sequences of non-salmonid fish GHR. Growth rates and energy retention were lowered by the PP75 and PP100 diets and a concurrent and progressive increase in plasma levels of growth hormone (GH) was found. However, no changes in hepatic GH binding and total plasma insulin-like growth factor (IGF)-I levels were...
Tipo: Text
Palavras-chave: Insulin like growth factor; Growth hormone receptor; Growth hormone; Plant proteins; Rainbow trout.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/publication-3620.pdf

Effects of Hydrostatic Pressure on Growth and Luminescence of a Moderately-Piezophilic Luminous Bacteria Photobacterium phosphoreum ANT-2200
Provedor de dados: 5
Autores: Martini, Severine; Al Ali, Badr; Garel, Marc; Nerini, David; Grossi, Vincent; Pacton, Muriel; Casalot, Laurence; Cuny, Philippe; Tamburini, Christian.
Bacterial bioluminescence is commonly found in the deep sea and depends on environmental conditions. Photobacterium phosphoreum ANT-2200 has been isolated from the NW Mediterranean Sea at 2200-m depth (in situ temperature of 13 degrees C) close to the ANTARES neutrino telescope. The effects of hydrostatic pressure on its growth and luminescence have been investigated under controlled laboratory conditions, using a specifically developed high-pressure bioluminescence system. The growth rate and the maximum population density of the strain were determined at different temperatures (from 4 to 37 degrees C) and pressures (from 0.1 to 40 MPa), using the logistic model to define these two growth parameters. Indeed, using the growth rate only, no optimal...
Tipo: Text
Ano: 2013
URL: https://archimer.ifremer.fr/doc/00296/40679/39664.pdf

Growth Performance Comparison of Pinctada margaritifera Juveniles Produced by Thermal Shock or Gonad Scarification Spawning Procedures
Provedor de dados: 5
Autores: Ky, Chin-long; Lau, Christophe; Sham Koua, Manaarii; Lo, Cedrik.
The black-lipped pearl oyster Pinctada margaritifera is of high economic importance in French Polynesia. Arecent decline in pearl value led to the initiation of several genetic breeding programs aiming to improve production traits, including oyster shell growth, which dictates the time of grafting, size of the implanted nuclei, and biomineralization capacities. We assessed shell diameters on hatchery-produced spat to analyze juvenile growth performance of four half-sib families derived from polyandry (one dam crossed with two sires) and polygyny (two dams crossed with one sire) using gametes obtained by thermal shock or gonad scarification. Spat growth was monitored over 3 mo, with shell diameter measured weekly. Results revealed that the spawning method...
Tipo: Text
Palavras-chave: Pearl oysters; Pinctada margaritifera; Juvenile; Growth performance; Spawning procedure.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00310/42167/41470.pdf

Physiological basis of extreme growth rate differences in the spat of oyster (Crassostrea gigas)
Provedor de dados: 5
Autores: Tamayo, David; Ibarrola, Irrintzi; Urrutxurtu, Inaki; Navarro, Enrique.
Juvenile oysters (Crassostrea gigas) (produced in November 2009) reared under uniform hatchery conditions for 4 months were selected for extreme growth rate differences by repeatedly taking larger and smaller individuals to achieve weight differences &gt; 30x between fast (F) and slow (S) growers. The physiological basis of differential growth was analyzed in experiments in June 2010, where components of energy gain (clearance and ingestion rates and absorption efficiency), energy loss (metabolic rates) and resulting scope for growth (J h(-1)) were compared for groups of F and S oysters fed three different ration levels (a parts per thousand 0.5, 1.5 and 3.0 mg of total particulate matter L-1). In both F and S oysters, a higher food ration promoted...
Tipo: Text
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00201/31244/29909.pdf

Comparison of growth of mussel, Mytilus edulis, on longline, pole and bottom culture sites in the Pertuis Breton, France
Provedor de dados: 5
Autores: Garen, Pierre; Robert, Stephane; Bougrier, Serge.
Growth of the mussel, Mytilus edulis, was compared for the first time under three culture regimes, longline located in open sea, pole and on-bottom both situated on an intertidal flat, in the Pertuis Breton, on the Atlantic coastline of France. Mussel sampling was performed on a monthly basis over 1 year while monitoring of hydrobiological parameters was conducted on a biweekly basis. Fluctuation of environmental parameters showed a similar pattern on both sea and shore locations with generally higher concentration levels for the intertidal area compared with the open sea, i.e. 4.07 and 3.17 mg 1(-1) for particulate organic matter, 3.16 and 2 mug 1(-1) for chlorophyll-a, 58.43 and 38.72 mg 1(-1) for inorganic-N, respectively. A clear seasonal growth...
Tipo: Text
Palavras-chave: Condition index; Emersion; Food resource; Water quality; Growth; Mytilus edulis.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/publication-581.pdf

Matrix-based fertilizers reduce nutrient leaching while maintaining Kentucky bluegrass growth
Provedor de dados: 18
Autores: Entry, J.A.; Sojka, R.E.
Tipo: Article
Palavras-chave: Soil.
Ano: 2010
URL: http://eprints.nwisrl.ars.usda.gov/1357/1/1333.pdf

Effect of Fall and Spring Applied Nitrogen Fertilizer on Growth and Yield of Sugarbeets
Provedor de dados: 18
Autores: Carter, J.N.
Tipo: Article
Palavras-chave: Sugarbeet; Fertilizer; Mass Import - autoclassified (may be erroneous).
Ano: 1984
URL: http://eprints.nwisrl.ars.usda.gov/444/1/561.pdf

Effect of Time and Amount of Nitrogen Uptake on Sugarbeet Growth and Yield
Provedor de dados: 18
Autores: Carter, J.N.; Traveller, D.J.
Tipo: Article
Palavras-chave: Sugarbeet; Mass Import - autoclassified (may be erroneous).
Ano: 1981
URL: http://eprints.nwisrl.ars.usda.gov/375/1/462.pdf

Sugarbeet Yield and Seasonal Growth Characteristics as Affected by Hail Damage and Nitrogen Level
Provedor de dados: 18
Autores: Carter, J.N.; Traveller, D.J.; Bosma, S.M.
Tipo: Article
Palavras-chave: Sugarbeet; Mass Import - autoclassified (may be erroneous).
Ano: 1978
URL: http://eprints.nwisrl.ars.usda.gov/347/1/416.pdf

The Effect of Aldicarb on Growth of Sugarbeets
Provedor de dados: 18
Autores: Peckenpaugh, R.E.; Blickenstaff, C.C.
Tipo: Article
Palavras-chave: Sugarbeet; Mass Import - autoclassified (may be erroneous).
Ano: 1976
URL: http://eprints.nwisrl.ars.usda.gov/283/1/326.pdf

Evaporation from some irrigated crops as related to stage of growth and soil water status
Provedor de dados: 18
Autores: Wright, James L.
Tipo: Article
Palavras-chave: Soil water (soil moisture); Mass Import - autoclassified (may be erroneous).
Ano: 1968
URL: http://eprints.nwisrl.ars.usda.gov/183/1/129.pdf

Effect of Mid-to Late-Season Water Stress on Sugarbeet Growth and Yield
Provedor de dados: 18
Autores: Carter, J.N.; Jensen, M.E.; Traveller, D.J.
Tipo: Article
Palavras-chave: Sugarbeet; Mass Import - autoclassified (may be erroneous).
Ano: 1980
URL: http://eprints.nwisrl.ars.usda.gov/365/1/449.pdf

Plant Growth
Provedor de dados: 18
Autores: Mayland, H.F.
Tipo: Book Section
Palavras-chave: Mass Import - unclassified.
Ano: 1972
URL: http://eprints.nwisrl.ars.usda.gov/745/1/229.pdf

Little cost of injury to growth and development of damselflies
Provedor de dados: 17
Autores: Timothy M. Sesterhenn; Philip H. Crowley.
*_Background:_*&amp;#xd;&amp;#xa;Damaged or missing appendages are a common problem in numerous vertebrate and invertebrate taxa and can negatively affect many aspects of life: mobility, foraging, predator avoidance, growth, and development have all been shown to suffer.  Many animals use autotomy to survive a predation attempt but suffer diminished performance until the missing appendage heals or regenerates.  Animals that regenerate face an extra problem, as they must re-allocate resources away from growth and development in order to regrow their missing parts.  We examined the effect of appendage loss on the growth and development of the damselfly Ischnura posita.  Damselfly larvae have three caudal lamellae, external gills that can be autotomized and...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2009
URL: http://precedings.nature.com/documents/3612/version/1

Comparative study on growth of chub mackerel (Scomber japonicus Houttuyn, 1782) from three different regions: NW Mediterranean, NE and SW Atlantic
Provedor de dados: 20
Autores: Perrotta, R.G.; Carvalho, N.; Isidro, E.
The von Bertalanffy growth parameters for chub mackerel (Scomber japonicus) from the NW Mediterranean, along the Catalan coast (Spain), were estimated. These results constitute the first estimated values for chub mackerel in this area and were as follows: L∞(cm) = 39.75; K (years-1) = 0.298; t0 (years) = -1.40 (for age groups 0 to 8). These results were compared with the estimated growth parameters for the chub mackerel that inhabits other two regions: NE Atlantic (Azores) and SW Atlantic (Argentina). Significant differences in growth curves between regions were found when the growth parameters, L∞, K and t0, were simultaneously compared. When comparing the growth parameters L~! and K individually, significant differences between regions were also...
Tipo: Journal Contribution
Palavras-chave: Environmental conditions; Surface temperature; Comparative studies; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2005
URL: http://hdl.handle.net/1834/1562

Relation entre la densité des microstries et le rayon de l'otolithe compatible avec le modèle de von Bertanlanffy: application à Lutjanus sebae (Cuvier, 1828) aux Seychelles
Provedor de dados: 20
Autores: Bach, P.; Chauvelon, P.
Daily growth increments (DGI) density - otolith radius relationship according to the von Bertanlanffy's growth model: application to Lutjanus sebae (Cuvier, 1828) in Seychelles. Often, age determination of fishes is conducted from several parts (scales and otoliths for teleost fishes, vertebrae, spine, opercular bones, ...) displaying seasonal marks (annuli) associated with growth checks, which can be used for the estimation of individual age. Since Panella's (1971, 1974) discovery of the daily growth increments (DGI) in the teleost otoliths, age determination with DGI method has been used more and more on larval stages of both temperate and tropical species and juvenile and adult individuals of, principally, snapper and grouper species. The age study of...
Tipo: Report
Palavras-chave: Otolith reading; Age determination; Methodology; Growth; Lutjanus sebae.
Ano: 1993
URL: http://hdl.handle.net/1834/5119

Observations on the fisheries, growth and mortality rate of Oreochromis niloticus (tilapia) in the Nyanza Gulf of Lake Victoria
Provedor de dados: 20
Autores: Dache, S.
Oreochromis niloticus forms the third most important commercial     fishery in Lake Victoria after Lates niloticus and Rastrineobola     argentea. Because of its commercial importance as a cheap source of     animal protein, a study of its landing trends, growth and mortality     rates was conducted to assess the state of its stock in the lake and     recommend guidelines for its exploitation and management. To arrive at     the trends, landing data between 1976 and 1989 were analysed. For the     estimation of the growth and mortality rates, length frequency data     were collected from trawl surveys conducted fortnight between     Sseptember, 1989 and August, 1990 in the Nyanza Gulf. The results show     increased landings during the study period, with a...
Tipo: Proceedings Paper
Palavras-chave: Oreochromis niloticus; Rastrineobola argentea; Lates niloticus Fishery management Growth Lake fisheries Landing statistics Mortality Fishery management Growth Lake fisheries Mortality http://aims.fao.org/aos/agrovoc/c_24026 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_4159 http://aims.fao.org/aos/agrovoc/c_4945.
Ano: 1994
URL: http://hdl.handle.net/1834/1152

Growth and survival of the pearl oyster Pteria hirundo (L.,1758) in an intermediate stage of culture in Santa Catarina, Brazil.
Provedor de dados: 21
Autores: Albuquerque, MCP; Alves, R; Zanandrea, ACV; Ferreira, J F; Melo, CMR; Magalhães, ARM.
There are no records in Brazil for the culture of Pteridae family oysters, genus Pteria and Pinctada. The intermediate culture can be considered one of the critical stages during the oyster farming. The changes in life conditions from a semi-closed environment provided by the collector to the structures utilized for the growth represents a considerable stress factor to which the animals are subjected. The goal of the present study was to evaluate the growth and survival of the pearl oyster Pteria hirundo (Linnaeus, 1758) kept in intermediate lanterns. Seeds of P. hirundo, obtained through larviculture carried out at the Marine Molluscs Laboratory (UFSC), southern Brazil were detached from the collectors, transferred and kept in an intermediate culture...
Tipo: Journal paper
Palavras-chave: Production systems; Feeding and growth; Aquaculture.
Ano: 2012
URL: http://orgprints.org/28997/1/Albuquerque_Growth.pdf

Grass silage in diets for organic growingfinishing  pigs
Provedor de dados: 21
Autores: Bikker, P.; Binnendijk, G.P.
The supply of a mixed ration of grass silage and  concentrate to growing-finishing pigs reduced  the growth performance and feed utilisation.  Further improvements of the feeding system  would be required to substantially reduce the  feed costs.
Tipo: Report
Palavras-chave: Feeding and growth; Pigs.
Ano: 2012
URL: http://orgprints.org/24634/1/240587.pdf

Effects of plant growth promoting rhizobacteria (PGPR) on yield,growth and nutrient contents in organically growing raspberry
Provedor de dados: 21
Autores: Orhan, Emine; Esitken, Ahmet; Ercisli, Sezai; Turan, Metin; Sahin, Fikrettin.
During 2003 and 2005, plant growth promoting effects of two Bacillus strains OSU-142 (N2-fixing) and M3 (N2-fixing and phosphate  solubilizing) were tested alone or in combinations on organically grown primocane fruiting raspberry (cv. Heritage) plants in terms of yield,  growth, nutrient composition of leaves and variation of soil nutrient element composition in the province of Erzurum, Turkey. The results showed  that Bacillus M3 treatment stimulated plant growth and resulted in significant yield increase. Inoculation of raspberry plant roots and rhizosphere  with M3 and/or OSU-142 + M3, significantly increased yield (33.9% and 74.9%), cane length (13.6% and 15.0%), number of cluster per cane  (25.4% and 28.7%) and number of berries per cane (25.1% and...
Tipo: Journal paper
Palavras-chave: Farming Systems; Farm nutrient management.
Ano: 2006
URL: http://orgprints.org/18587/1/ahududuscientia.pdf

Growth dynamics of perennial weeds in long-termed organic 8 cropping systems on two locations in Denmark
Provedor de dados: 21
Autores: Melander, Bo; Rasmussen, Ilse A.; Askegaard, Margrethe; Olesen, Jørgen E.
The dynamics of perennial weeds in organic crop rotations.
Tipo: Journal paper
Palavras-chave: Weed management.
Ano: 2014
URL: http://orgprints.org/25686/7/25686.pdf

The European Organic Market between strong Growth and Consolidation. Current State and Prospects
Provedor de dados: 21
Autores: Richter, Toralf.
Table of Contents    1. Introduction  2. Market data  3. Prospects: EU Organic Action Plan
Tipo: Conference paper, poster, etc.
Palavras-chave: Markets and trade; Europe.
Ano: 2005
URL: http://orgprints.org/4057/1/richter%2D2005%2Dbiofach%2Dmarket.pdf

Impact of roughage on growth, health and behaviour in pigs and poultry
Provedor de dados: 21
Autores: Vermeer, Herman M.
* Need to supply roughage to grow-finish pigs (EC889-2008)  * Expensive protein rich ingredients in concentrate  * Many organic pig farmers have access to grassland  * Some good practical experience with young grass (silage)
Tipo: Report
Palavras-chave: Farming Systems; Animal husbandry.
Ano: 2014
URL: http://orgprints.org/28115/7/28115.pdf

R&amp;D Spillovers, Economic Growth, Convergence, and Divergence: A Time-Series Approach
Provedor de dados: 31
Autores: Mohtadi,   Hamid; Datta,   Anusua.
Tipo: Conference Paper or Presentation
Palavras-chave: International Development; Research and Development/Tech Change/Emerging Technologies.
Ano: 1996
URL: http://purl.umn.edu/50864

The Effects of Biotechnology Policy on Trade and Growth: Technical Annex
Provedor de dados: 31
Autores: Oehmke,   James F.; Maredia,   Mywish K.; Weatherspoon,   Dave D.
This document is the technical annex to the full paper “The Effects of Biotechnology Policy on Trade and Growth,” which is available separately.
Tipo: Journal Article
Palavras-chave: International Relations/Trade.
Ano: 2001
URL: http://purl.umn.edu/23878

Implications of the New Growth Theory to Trade, Trade Research, and Trade Policy: Discussion
Provedor de dados: 31
Autores: Schuh,   G. Edward.
Tipo: Conference Paper or Presentation
Palavras-chave: International Development; Research and Development/Tech Change/Emerging Technologies.
Ano: 1996
URL: http://purl.umn.edu/50867

Market Growth vs Government-facilitated Growth: E.U. and U.S. Organic Agriculture Policies
Provedor de dados: 31
Autores: Dimitri,   Carolyn.
Tipo: Conference Paper or Presentation
Palavras-chave: Agricultural and Food Policy.
Ano: 2003
URL: http://purl.umn.edu/15742

The Economic Growth Impacts of Sugarcane Expansion In Brazil: An Inter-Regional Analysis
Provedor de dados: 31
Autores: Deuss,   Annelies.
Tipo: Conference Paper or Presentation
Palavras-chave: Brazil; Sugarcane expansion; Economic growth; Propensity score; Ethanol; Agricultural and Food Policy; Crop Production/Industries; International Development; Research Methods/ Statistical Methods; C14; C21; O13; R13.
Ano: 2011
URL: http://purl.umn.edu/103564

Hydraulic limits on tree performance: Transpiration, carbon gain and growth of trees
Provedor de dados: 31
Autores: Tyree,   Melvin T.
An overview of the relationship between plant gas exchange, the potential hydraulic gradient, the size of the plant and its hydraulic conductance is presented. Key references are used to exemplify arguments of whole-plant optimality and to explain the origin and development of the dominant paradigm for interpreting the nature of water use and growth in plants.
Tipo: Journal Article
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2002
URL: http://purl.umn.edu/47861

Investment, Subsidies, and Pro-Poor Growth in Rural India
Provedor de dados: 31
Autores: Fan,   Shenggen; Gulati,   Ashok; Thorat,   Sukhadeo.
This paper reviews the trends in government subsidies and investments in and for Indian agriculture; develops a conceptual framework and model to assess the impact of various subsidies and investments on agricultural growth and poverty reduction; and, presents several reform options with regard to reprioritizing government spending and improving institutions and governance. There are three major findings. First, initial subsidies in credit, fertilizer, and irrigation have been crucial for small farmers to adopt new technologies. Small farms are often losers in the initial adoption stage of a new technology since prices of the agricultural products are typically being pushed down by greater supply of products from large farms, which adopted the new...
Tipo: Working or Discussion Paper
Palavras-chave: Rural poverty; Agricultural growth; Investment; Subsidies; India; International Development.
Ano: 2007
URL: http://purl.umn.edu/42397

Costs of Overcoming Market Entry Constraints to Uganda's Export-Led Growth Strategy
Provedor de dados: 31
Autores: Nichodemus,   Rudaheranwa; Madina,   Guloba; Nabiddo,   Winnie.
Uganda's export sector has experienced tremendous growth over the last two decades...
Tipo: Technical Report
Palavras-chave: Exports; Trade commodities; EPRC; Agribusiness; International Development; International Relations/Trade; Production Economics.
Ano: 2007
URL: http://purl.umn.edu/148959

Theory of Stochastic Optimal Economic Growth
Provedor de dados: 31
Autores: Olson,   Lars J.; Roy,   Santanu.
This paper is a survey of the theory of stochastic optimal economic growth.
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 2005
URL: http://purl.umn.edu/28601

The New Growth Theory: Its Logic and Trade Policy Implications
Provedor de dados: 31
Autores: Baldwin,   Richard E.; Seghezza,   Elena.
Tipo: Conference Paper or Presentation
Palavras-chave: International Development; International Relations/Trade.
Ano: 1996
URL: http://purl.umn.edu/50862

LESS POVERTY IN EGYPT? EXPLORATIONS OF ALTERNATIVE PASTS WITH LESSONS FOR THE FUTURE
Provedor de dados: 31
Autores: Lofgren,   Hans.
In this paper, the impact of alternative development strategies on growth and poverty is assessed in an economywide framework, using Egypt as a case study. The analysis is guided by the following question: By pursuing a development strategy different from the one actually pursued since the late 1970s, could Egypt’s government significantly have improved the status of its poor? To address this question, a dynamic, recursive, Computable General Equilibrium (CGE) model is used to simulate Egypt’s economy for the period 1979-1997. The model is built around a Social Accounting Matrix (SAM) for 1979. The base scenario incorporates Egypt’s evolving policy regime and changes in Egypt’s external environment, including a gradual transition toward an economy with...
Tipo: Working or Discussion Paper
Palavras-chave: Food Security and Poverty.
Ano: 2001
URL: http://purl.umn.edu/16265

Does Broadband Access Impact Population Growth in Rural America?
Provedor de dados: 31
Autores: Mahasuweerachai,   Phumsith; Whitacre,   Brian E.; Shideler,   David W.
Tipo: Conference Paper or Presentation
Palavras-chave: Population growth; Broadband; Spatial econometric; Average treatment effects; Community/Rural/Urban Development.
Ano: 2009
URL: http://purl.umn.edu/49303

Models for the analysis of growth curves for rearing tinamous (Rhynchotus rufescens) in captivity
Provedor de dados: 89
Autores: Tholon,P; Queiroz,SA.
Growth curves models provide a visual assessment of growth as a function of time, and prediction body weight at a specific age. This study aimed at estimating tinamous growth curve using different models, and at verifying their goodness of fit. A total number 11,639 weight records from 411 birds, being 6,671 from females and 3,095 from males, was analyzed. The highest estimates of a parameter were obtained using Brody (BD), von Bertalanffy (VB), Gompertz (GP,) and Logistic function (LG). Adult females were 5.7% heavier than males. The highest estimates of b parameter were obtained in the LG, GP, BD, and VB models. The estimated k parameter values in decreasing order were obtained in LG, GP, VB, and BD models. The correlation between the parameters a and k...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth parameters; Growth evaluation; Non-linear models; Wild birds.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000100004

Efficiency of the On-Farm Mycorrhizal Inoculant and Phonolite Rock on Growth and Nutrition of Schinus terebinthifolius and Eucalyptus saligna
Provedor de dados: 90
Autores: Schoen,Chaiane; Aumond,Juarês José; Stürmer,Sidney Luiz.
ABSTRACT: The production of tree seedlings with high survival rate and growth is influenced by the substrate, which may be composed of biological and non-biological materials that help plant growth. The objective of this study was to evaluate the efficiency of a mycorrhizal inoculant on farm and the use of a potassic rock (phonolite) on growth and nutrition of Eucalyptus saligna Sm. and Schinus terebinthifolius Raddi under greenhouse conditions. Both species were assigned to three mycorrhizal treatments [no inoculated control (SP), no inoculation + pulp sludge and carbonized rice husk (LC), and mycorrhizal inoculant (IN)] and four phonolite rock treatments [no phonolite (F0) and addition of phonolite in particle sizes of 0.037 mm (F1), 0.074 mm (F2), and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Woody species; Mycorrhiza; Phonolite; Biofertilizers; Mycorrhizal colonization; Potassium.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100430

Growth promotion of pineapple 'vitória' by humic acids and burkholderia spp. during acclimatization
Provedor de dados: 90
Autores: Baldotto,Lílian Estrela Borges; Baldotto,Marihus Altoé; Canellas,Luciano Pasqualoto; Bressan-Smith,Ricardo; Olivares,Fábio Lopes.
In vitro propagation of pineapple produces uniform and disease-free plantlets, but requires a long period of acclimatization before transplanting to the field. Quicker adaptation to the ex vitro environment and growth acceleration of pineapple plantlets are prerequisites for the production of a greater amount of vigorous, well-rooted planting material. The combination of humic acids and endophytic bacteria could be a useful technological approach to reduce the critical period of acclimatization. The aim of this study was to evaluate the initial performance of tissue-cultured pineapple variety Vitória in response to application of humic acids isolated from vermicompost and plant growth-promoting bacteria (Burkholderia spp.) during greenhouse...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ananas comosus; Plant growth-promoting bacteria; Diazotrophic bacteria; Humic substances; Inoculant; Biofertilizer.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000500012

Age structure and growth of the rough scad, Trachurus lathami (Teleostei: Carangidae), in the Southeastern Brazilian Bight
Provedor de dados: 103
Autores: Ruas,Lygia C.; Vaz-dos-Santos,André M.
ABSTRACT The rough scad, Trachurus lathami Nichols, 1920, is a small pelagic species distributed along the West Atlantic coast. It is most abundant in the Southern Brazil (28°30’-34°S) and in the Southeastern Brazilian Bight (SEBB, 22°-28°30’S). The rough scad is fished by purse seines, which main target is the Brazilian sardine, Sardinella brasiliensis (Steindachner, 1879). Age and growth are vital to understand the life cycle of a species, to fishery management and ecosystem modeling. This study aimed to assess the age and growth of T. lathami, to identify its age structure in the SEBB, and to evaluate what causes the wide differences among Trachurus species in terms of body size and growth parameters. Data available on T. lathami was attained between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ECOSAR; Otolith; Sclerochronology; Von Bertalanffy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702017000100324

Effects of antibiotic growth promoters mixed with mineral supplement on growth performance, ingestive behavior, and mineral intake of grazing bulls
Provedor de dados: 96
Autores: Vedovatto,Marcelo; Diogo,José Mauro da Silva; Beltrame,João Artêmio Marin; D'Oliveira,Marcella Cândia; Silva,Cássio José da; Mendes,Clayton Quirino; Cabral Filho,Sergio Lucio Salomon; Franco,Gumercindo Loriano.
ABSTRACT The objective was to evaluate the addition of antibiotic growth promoters to free-choice mineral supplement on ingestive behavior, mineral intake, and growth performance of grazing bulls. Sixty Nellore bulls [initial body weight (BW) of 219±17.8 kg and 15±2 months of age] were divided in 12 marandu grass paddocks. The treatments were: mineral supplement (control), mineral supplement + virginiamycin (VIRG), mineral supplement + lasalocid sodium (LASA) and mineral supplement + salinomycin sodium (SALI). Mineral supplements were formulated with target intake of 60 g d−1 and the growth promoters of 75 mg 100 kg−1 of BW. The experimental design was the completely randomized blocks. There was no treatment effect on ingestive behavior or mineral intake;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feed additive; Cattle; Ionophore; Lasalocid; Salinomycin; Virginiamycin.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100706

Effects of light availability and growth rate on leaf lifespan of four temperate rainforest Proteaceae
Provedor de dados: 97
Autores: LUSK,CHRISTOPHER H; CORCUERA,LUIS J.
Although comparative studies have revealed much about the environmental correlates of leaf lifespan and its integration with other leaf traits, a comprehensive theory of leaf lifespan is still lacking. The influence of growth rate on self-shading may be a key proximate determinant of both inter- and intra-specific variation in leaf lifespans. If this were the case, we would expect leaf lifespans of fast-growing light-demanding species to respond more strongly to light environment than those of shade-tolerant species. We monitored growth and leaf survival of juvenile trees of four temperate rainforest Proteaceae in southern Chile, in order to explore the influences of light environment and self-shading on leaf lifespan. Leaf lifespans tended to decrease...
Tipo: Journal article
Palavras-chave: Height growth; LAI-2000; Path analysis; Self-shading; Shade tolerance.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2011000200011

Temperature and pH of the nutrient solution on wheat primary root growth
Provedor de dados: 63
Autores: Camargo,Carlos Eduardo de Oliveira; Ferreira Filho,Antonio Wilson Penteado; Salomon,Marcus Vinicius.
Primary root growth is very important for wheat (Triticum aestivum L.) crop in upland conditions in the State of São Paulo. Fourteen wheat genotypes (mutant lines and cultivars) were evaluated for primary root growth during 7 and 15 days of development in complete and aerated nutrient solutions, in the laboratory. In the first experiment, solutions with three pH values (4.0, 5.0 and 6.0) at constant temperature (24 ± 1°C), and in the second experiment, solutions with the same pH (4.0) but with three temperatures (18°C ± 1°C, 24°C ± 1°C and 30°C ± 1°C) were used. High genetic variability was observed among the evaluated genotypes in relation to primary root growth in the first stages of development in nutrient solutions independent of pH, temperature and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum L.; Upland crop; Root growth.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000300013

Growth retardants and nutrition characteristics of the Thompson seedless and Italia grape cultivars
Provedor de dados: 63
Autores: Albuquerque,Teresinha Costa Silveira de; Dechen,Antonio Roque; Castro,Paulo Roberto de Camargo e.
Two experiments were carried out in a greenhouse to evaluate the variability in macronutrient contents in relation to growth regulator sprays on ‘Thompson Seedless’ and ‘Italia’ grapevines. The treatments were: chlormequat - 1,500mg L-1; daminozide - 3,000mg L-1; uniconazole - 30mg L-1; mepiquat chloride - 300mg .L-1 and control. The cuttings were grafted on the ‘Tropical’ rootstock and were rooted in sand. After 105 days of growth they were transplanted to 35L pots with a mixture of 1:1:1 volume of sand, soil and organic matter. Grapevines were pruned each 150 days, leaving two canes with six buds each for the ‘Italia’ cultivar and with fifteen buds for the ‘Thompson Seedless’ cultivar. Water was supplied through drip irrigation (1L/plant/day). Grapevines...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitis sp.; Growth regulator; Mineral nutrition.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162000000100009

การเจริญเติบโตของรากข้าวฟ่างภายใต้ระบบการให้น้ำแบบ Line-source
Provedor de dados: 106
3 ill., 1 table
Palavras-chave: Sorghum; Root growth; Line source sprinkler system; ข้าวฟ่าง; การให้น้ำชลประทาน; ราก; การเจริญเติบโต.
Ano: 1984
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4469

ผลของปุ๋ยเคมีและปุ๋ยมูลไก่ ต่อการเจริญเติบโตและผลผลิตของข้าวโพดหวานที่ปลูกอย่างต่อเนื่องในดินชุดโคราช จังหวัดขอนแก่น
Provedor de dados: 106
9 tables
Palavras-chave: Corn; Maize; Sweet corn; Chemical fertilizers; Chicken manure; Growth; Yields; Korat soil; ข้าวโพดหวาน; ปุ๋ยเคมี; ปุ๋ยมูลไก่; การเจริญเติบโต; ผลผลิต; ดินชุดโคราช.
Ano: 1984
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4476

อิทธิพลของสารพาโคลบิวทราโซลที่มีต่อการเจริญเติบโต การเกิดดอกและผลผลิตของบ๊วย
Provedor de dados: 106
Autores: Jaturaporn Rakngan.
Thesis (M.Sc. in Agriculture)
Tipo: PhysicalObject
Palavras-chave: Prunus mume; Japanese apricot; Paclobutrazol; Flowering; Fruiting; Growth; Branching; Yield; บ๊วย; สารพาโคลบิวทราโซล; การเกิดดอก; การออกผล; การเจริญเติบโต; การแตกกิ่ง; ผลผลิตบ๊วย.
Ano: 1990
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5486

Effects of some soil managements on soil moisture retention and on the growth of corn and mungbeans
Provedor de dados: 106
Autores: Kubota, Toru; Prateep Verapattananirund; Thirapong Piyasiranond; Pongpit Piyapongse.
Palavras-chave: Corn; Maize; Mungbeans; Mulching; Tillage; Soil moisture content; Soil management; Growth; Yields; ข้าวโพด; ถั่วเขียว; ความชื้นในดิน; การจัดการดิน.
Ano: 1977
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3929

ผลของจิบเบอเรลลินที่มีต่อการผลิตไหลและการเจริญเติบโตของสตรอเบอรี่พันธุ์ Tioga
Provedor de dados: 106
Autores: Nopawan Thongrod.
Thesis (M.Sc. in Agriculture)
Tipo: PhysicalObject
Palavras-chave: Fragaria ananassa; Strawberry; Tioga; Gibberellin; Growth; Runner production; GA; สตรอเบอรี่; พันธุ์ไทโอกา; จิบเบอเรลลิน; การเจริญเติบโต; การผลิตไหล; ส่วนขยายพันธุ์.
Ano: 1990
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5505

การศึกษาเปรียบเทียบผลของเชื้อรา วีเอ ไมคอไรซา 4 ชนิด ต่อการเจริญของข้าวโพด
Provedor de dados: 106
Palavras-chave: Corn; Maize; Growth; Va mycorrhiza; ข้าวโพด; การเจริญเติบโต; วีเอไมคอร์ไรซา.
Ano: 1984
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4490

ผลของการตัดขยายระยะต่อการเติบโต การใช้น้ำ และคุณสมบัติของดินบางประการของสวนป่าไม้ต่างถิ่นในที่สูง
Provedor de dados: 106
Autores: Kritsanakorn Phankham.
Thesis (M.Sc. in Forestry)
Tipo: PhysicalObject
Palavras-chave: Exotic tree plantation; Thinning; Growth; Water use; Soil properties; High land; ไม้กระถินดอย; สวนป่าไม้ต่างถิ่น; การเติบโต; การใช้น้ำ; คุณสมบัติของดิน; การตัดขยายระยะ; ผลผลิต.
Ano: 2004
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5463

การส่งเสริมการเจริญเติบโตของต้นข้าวโพดที่เพาะเลี้ยงภายใต้สภาพ photoautotrophic
Provedor de dados: 106
Autores: Parinya Khajudparn; Anongnut Bhonwong; Chaba Jampatong; Piyada Thipyapong.
Palavras-chave: Corn; Maize; In vitro maize plantlet; Growth promotion; Photoautotrophic condition; ข้าวโพด; การเพาะเลี้ยงเนื้อเยื่อ.
Ano: 2003
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4531

Studies on the effect of nitrogen and phosphate fertilizer on growth and yield of irrigated IS 8719 sorghum variety grown on Roi-Et soils
Provedor de dados: 106
Autores: Mongkol Panichkul; Pradit Boonampol.
1 table
Palavras-chave: Sorghum; Nitrogen fertilizers; Phosphate fertilizers; IS 8719; Irrigation; Growth; Yields; Roi-et soil; ข้าวฟ่าง; ปุ๋ยไนโตรเจน; ปุ๋ยฟอสเฟต; การให้น้ำชลประทาน.
Ano: 1976
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3868

การปรับค่าสัมประสิทธิ์เพื่อปรับปรุงความแม่นยำของแบบจำลอง CSM-CROPGRO-Peanut ในการเจริญเติบโตของรากถั่วลิสง
Provedor de dados: 106
Autores: Nuntawoot Jongrungklang; Banyong Toomsan; Sanun Jogloy; Nimitr Vorasoot; Patcharin Songsri; Aran Patanothai.
Important input factors that affect root growth under field conditions have not been included in CSM-CROPGRO-Peanut model, resulting in poor simulation of some rooting traits. Hence, the objective of this study was to optimize root growth factors for obtaining the suitable value with particular genotypes and environments.  Two root growth factors including 1) fraction partitioning to leaf (YLEAF) and 2) root growth factor in soil layers were adjusted. Root mean square error (RMSE) and index of agreement (d) that were the statistical agreement between observed data and   simulated data were used for considering the best fit values of root growth factor. The statistical agreement between observed and simulated data of root dry weight and root length density...
Tipo: Collection
Palavras-chave: Peanut; Root dry weight; Root length density; Statistical agreement; Growth model; Coefficients; Total dry matter; CSM-CROPGRO-Peanut model; ถั่วลิสง; น้ำหนักแห้งราก; ความหนาแน่นราก; ความสอดคล้องทางสถิต; แบบจำลองการเจริญเติบโต; น้ำหนักแห้งทั้งหมด; ค่าสัมประสิทธิ์; ความแม่นยำ; พันธุ์; สภาพแวดล้อม.
Ano: 2011
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5114

ความสัมพันธ์ระหว่างจุดกลายพันธุ์ (SNPs) ของยีน GHSR, IGFI, cGH และ IGFBP2 ต่อลักษณะการเจริญเติบโตในไก่พื้นเมืองไทย (ชีและประดู่หางดำ)
Provedor de dados: 106
Autores: Neungrutai Promwatee; Monchai Duangjinda; Wuttigrai Boonkum; Banyat Loapaiboon.
Objective of this study was to detect the SNPs of GHSR, IGFI, cGH and IGFBP2 genes and their association with growth traits (body weight at 0, 4, 8, 12 and 16 weeks of age, ADG during 0-4, 0-8, 0-12 and 0-16 weeks of growth) and carcass trait (breast width) of Thai native chickens (Chee and Pradu Hang Dam). Blood samples were randomly collected from 60 chickens/breed. The genotypes were detected using PCR-RFLP methods with specific primers for each gene. A mixed model was used to analyze the associations of candidate genes with growth traits. In Chee, the GHSR gene was not significantly associated with growth traits, while, the IGFI gene was significantly associated with body weight at 12 and 16 weeks of age and ADG during 0-12 and 0-16 weeks of age. The...
Tipo: Collection
Palavras-chave: Thai Native Chicken; IGFI; IGFBP2; CGH; GHSR; Growth trait; ไก่พื้นเมืองไทย; ลักษณะการเจริญเติบโต; การกลายพันธุ์; ยีน; พันธุ์ชี; พันธุ์ประดู่หางดำ; เครื่องหมายพันธุกรรม.
Ano: 2011
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5214

ผลของไคโตซานฉายรังสีต่อการเจริญเติบโต การให้ผลผลิต และการต้านทานโรคในข้าว
Provedor de dados: 106
Autores: Phiriyatorn Suwanmala; Kasinee Hemvichian; Nittaya Ruensuk; Kasem Suntrajarn; Manit Zonsook; Kanokporn Boonsirichai.
Tipo: PhysicalObject
Palavras-chave: Radiation chitosan; Rice growth; Yield; Disease resistance; ข้าว; ไคโตซาน; การฉายรังสี; ปุ๋ยเคมี; การเจริญเติบโต; การต้านทานโรค; ผลผลิต; องค์ประกอบผลผลิต.
Ano: 2010
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5224

Growth and water use of corn as affected by tillage practices and irrigation frequencies
Provedor de dados: 106
Autores: Tawatchai Na Nagara; Chakranopakhun Tongyai; Paiboon Rattanaprateep.
2 ill., 2 tables
Palavras-chave: Corn; Maize; Tillage; Irrigation; Growth; Yields; Water use; Soil water content; ข้าวโพด; การไถพรวน; การใช้น้ำชลประทาน; อัตราการเจริญเติบโต.
Ano: 1983
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4135

Characterization of Factors involved in the tissue culture growth recovery and the sustainability of thr GUS activity in Hevea Brasiliensis friable calli transformed by Agrobacterium Tumefaciens
Provedor de dados: 106
Autores: Rattana, W.; Teinseree, N.; Tadakittisarn, S.; Pujade-Renaud, V.; Mongkolsook, Y.; Montoro, P.
Palavras-chave: Tissue; Culture; Growth; Recovery.
Ano: 2001
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4988

การเข้ากันได้และการเจริญเติบโตในระยะแรกของพลับพันธุ์ Fuyu บนต้นตอเพาะเมล็ดชนิดต่าง ๆ
Provedor de dados: 106
Autores: Watcharaphon Satheinkhot.
Thesis (M.Sc. in Agriculture)
Tipo: PhysicalObject
Palavras-chave: Diospyros kaki; Grafting; Fuyu persimmon; Seedling rootstocks; Species; Scions; Growth; Compatibility; พลับ; การขยายพันธุ์; การต่อกิ่ง; ต้นตอเพาะเมล็ด; พันธุ์เต้าซื่อ; พันธุ์ Fuyu; ชนิด; กิ่งพันธุ์; การเจริญเติบโต; การเข้ากันได้.
Ano: 2005
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5496

การทดลองเปรียบเทียบผลผลิตที่ลดลงของข้าวโพดเลี้ยงสัตว์เมื่อขาดน้ำในช่วงระยะการเจริญเติบโตต่าง ๆ กัน
Provedor de dados: 106
4 tables
Palavras-chave: Corn; Maize; Water deficit; Corn growth stage; Grain yield; ข้าวโพด; การทดสอบผลผลิต; การขาดน้ำ; การเจริญเติบโต.
Ano: 1986
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4395

Effects of preplant herbicides applied for control of purple nutsedge (Cyperus rotundus) on growth and yield of corn (Zea mays)
Provedor de dados: 106
Autores: Umporn Suwunnamek; Suthep Thongma.
10 tables
Palavras-chave: Corn; Maize; Weeds; Pre-plant herbicides; Yields; Growth; Purple nutsedge; Cyperus rotundus; ข้าวโพด; แห้วหมู; การเจริญเติบโต; สารกำจัดวัชพืชแบบก่อนปลูก.
Ano: 1990
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4299

Tolerance to Polycyclic Aromatic Hydrocarbons (PAHs) by filamentous fungi isolated from contaminated sediment in the Amazon region
Provedor de dados: 3
Autores: Souza, Hilton Marcelo de Lima; Barreto, Lindimar Rosas; Mota, Adolfo José da; Oliveira, Luiz Antônio de; Barroso, Hileia dos Santos; Zanotto, Sandra Patricia.
 Tolerance to Polycyclic Hydrocarbons Aromatic (PAHs) is considered an important characteristic when assessing the bioremediation potential of microorganisms. Given this, the objective of this research was to assay filamentous fungi from the Amazon region, isolated from sediments with differents levels of contamination by PAHs, for tolerance to phenanthrene and pyrene. To achieve this, fungal cultures plugs (5 mm), obtained after 7 days growth, were transferred to petri dishes containing 20% Sabouraud dextrose agar medium, after surface innoculation with phenanthrene and pyrene crystals, separately. Radial mycelial growth was evaluated after 10 days at five different concentration levels for each contaminant and control group, all in triplicate for each...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.12.00.00-9 phenanthrene; Pyrene; Fungal growth inhibition; Amazon. Microbiologia ambiental.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34709

The Effects of Different Media, Sucrose Concentrations and Natural Additives on Plantlet Growth of Phalaenopsis Hybrid 'Pink'
Provedor de dados: 52
Autores: Zahara,Meutia; Datta,Avishek; Boonkorkaew,Patchareeya; Mishra,Abha.
ABSTRACT The effects of various sucrose concentrations as carbon source and natural additives in different media on plantlet growth of Phalaenopsis hybrid 'Pink' were studied. Plantlets were cultured on two media (Murashige and Skoog [MS] and Vacin and Went [VW]) supplemented with 0, 10, 20, 30 and 40 g L-1 sucrose either with 0, 10 and 20% (v/v) coconut water (CW) or carrot juice (CJ) as natural additives. After four months of culture, the combination of sucrose and CW supplemented with both media affected plantlet growth where most of the plantlets showed slow growth and survival frequency (0-80%) with increasing concentrations of CW in all sucrose concentrations. However, plantlet growth on both media containing only 20 g L-1 sucrose without CW was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carrot juice; Coconut water; Natural additives; Phalaenopsis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100501

Single-nucleotide polymorphism analysis of GH, GHR, and IGF-1 genes in minipigs
Provedor de dados: 56
Autores: Tian,Y.G.; Yue,M.; Gu,Y.; Gu,W.W.; Wang,Y.J.
Tibetan (TB) and Bama (BM) miniature pigs are two popular pig breeds that are used as experimental animals in China due to their small body size. Here, we analyzed single-nucleotide polymorphisms (SNPs) in gene fragments that are closely related to growth traits [growth hormone (GH), growth hormone receptor (GHR), and insulin-like growth factor (IGF)-1)] in these pig breeds and a large white (LW) control pig breed. On the basis of the analysis of 100 BMs, 108 TBs, and 50 LWs, the polymorphic distribution levels of GH, GHR, and IGF-1 were significantly different among these three pig breeds. According to correlation analyses between SNPs and five growth traits - body weight (BW), body length (BL), withers height (WH), chest circumference (CC), and abdomen...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Minipigs; SNP; GH; GHR; IGF-1.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014000900753

Increased Growth and Changes in Wheat Mineral Composition through Calcium Silicate Fertilization under Normal and Saline Field Conditions
Provedor de dados: 117
Autores: Anser,Ali; Basra,Shahzad M.A; Hussain,Safdar; Iqbal,Javaid.
^len^les
Tipo: Journal article
Palavras-chave: Salt stress; Silicon; Wheat growth; K+:Na+; Water potential; Stomatal conductance.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000100016

Fire, logging and establishment patterns of second-growth forests in south-central Chile: implications for their management and restoration
Provedor de dados: 118
Autores: González,Mauro E; Szejner,Paul; Donoso,Pablo J; Salas,Christian.
Second-growth forests represent the greatest potential resource for forest management and large-scale ecological restoration in many regions. In south-central Chile, second-growth forests include those dominated by Nothofagus obliqua, N. dombeyi, Drimys winteri, and a mixture of evergreen species, especially hardwoods. This article examines the influence of fire and logging on the establishment patterns and development of second-growth forests in south-central Chile. We characterize the size structure and composition of these four types of forests with sampling plots. The identification of the type of disturbance and its date of occurrence was determined from evidence such as fire scars and even-aged pulses of tree establishment. The size, structure and...
Tipo: Journal article
Palavras-chave: Disturbances; Ecological restoration; Nothofagus; Secondary succession.
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000300011

Effect of Brachionus rubens on the growth characteristics of various species of microalgae
Provedor de dados: 69
Autores: Abou,Reda A.I; Singh,Manjinder; Rivera-Cruz,Anangelica; Power,Grace; Bagby-Moon,Thomas; Das,Keshav.
Background: Cultivation of algae for conversion to biofuels has gained global interest. Outdoor raceway cultivation is preferred because of its lower capital and operating costs. A major disadvantage of outdoor cultivation is susceptibility of algal crops to attack by predatory rotifers. In order to quantify the impact of rotifer attack on different species of algae, we evaluated the growth of eleven microalgal species over a 21-d period after being infected by the predatory rotifer Brachionus rubens. Results: Of the eleven species, Chlorella sorokiniana was the most susceptible with rapid decline in algal growth concomitant with increase in rotifer population growth (3.82/d). In contrast, Synechococcus elongatus andScenedesmus dimorphus were both...
Tipo: Journal article
Palavras-chave: Algae; Biofuels; Biomass; Cyanobacteria; FlowCam; Grazer.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000400010

Kinetic analysis and effect of culture medium and coating materials during free and immobilized cell cultures of Bifidobacterium animalis subsp. lactis Bb 12
Provedor de dados: 69
Autores: Jalili,Hasan; Razavi,Hadi; Safari,Mohammad; Amrane,Abdeltif.
Microencapsulation technique appears helpful for more protection of Bifidobacteria against acid inhibitory effect. The effect of medium composition and product inhibitory in free cell culture, as well as the effect of the coating materials in immobilized cells, on biomass growth, acid production and substrate utilization kinetics of Bifidobacterium animalis subsp. lactis Bb 12 in uncontrolled batch fermentation was examined. The Monod and the Luedeking and Piret equations with a product inhibition term involving toxic power terms improved model efficiency for both growth and production. The model showed that media and coating materials had an effect on toxic power terms. Cell immobilization had a positive impact on B. animalis culture. Kinetic analysis...
Tipo: Journal article
Palavras-chave: Bifidobacterium; Immobilization; Kinetic models; Medium composition.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000300002

Lipase production and growth modeling of a novel thermophilic bacterium: Aneurinibacillus thermoaerophilus strain AFNA
Provedor de dados: 69
Autores: Ebrahimpour,Afshin; Rahman,Raja Noor Zaliha Raja Abd; Kamarudin,Nor Hafizah Ahmad; Basri,Mahiran; Salleh,Abu Bakar.
Aneurinibacillus thermoaerophilus strain AFNA as a novel isolated extracellular thermostable organic solvent tolerant lipase producing bacterium was employed in the present study. The lipase production of strain AFNA and its correlation with bacterial growth was studied via a modeling assessment by response surface methodology (RSM) and artificial neural network (ANN) techniques. The best achieved models were multilayer full feed forward incremental back propagation network and modified cubic response surface model (mRSM) using backward elimination. The highest lipase specific activity (13.1 Umg-1) and bacterial growth (OD600 = 3.0) were obtained at technically similar: growth temperature (53 and 53ºC), inoculum size (2.6 and 3.0%), agitation rate (118 and...
Tipo: Journal article
Palavras-chave: Artificial neural network; Modified response surface methodology; Thermostable; Organic solvent tolerant.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000400006

JUVENILE HEIGHT GROWTH RATES AND SORTING OF THREE NOTHOFAGUS SPECIES ON AN ALTITUDINAL GRADIENT
Provedor de dados: 73
Autores: Cárdenas Garrido,Cecilia; Lusk,Christopher H.
It has been argued that if the cost of investment in cold resistance mechanisms detracts significantly from growth rates, then height growth tradeoffs should control species sorting on latitudinal temperature gradients. Applying the same logic to altitudinal temperature gradients, it can be predicted that species' upper altitudinal limits will be fixed by their degree of cold resistance, whereas the lower altitudinal limits of species growing higher up will be set by competition from faster-growing thermophilous species. We tested this prediction for three Nothofagus species on an altitudinal gradient (1,100 - 1,700 m) near Termas de Chillán, on the lower western slopes of the Andean Cordillera. We used retrospective methods to measure height increment...
Tipo: Journal article
Palavras-chave: Altitude; Cold resistence; Competition; Temperate forest; Tradeoff.
Ano: 2002
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432002000100004

Plant growth-promoting bacteria as inoculants in agricultural soils
Provedor de dados: 74
Autores: Souza,Rocheli de; Ambrosini,Adriana; Passaglia,Luciane M.P.
Abstract Plant-microbe interactions in the rhizosphere are the determinants of plant health, productivity and soil fertility. Plant growth-promoting bacteria (PGPB) are bacteria that can enhance plant growth and protect plants from disease and abiotic stresses through a wide variety of mechanisms; those that establish close associations with plants, such as the endophytes, could be more successful in plant growth promotion. Several important bacterial characteristics, such as biological nitrogen fixation, phosphate solubilization, ACC deaminase activity, and production of siderophores and phytohormones, can be assessed as plant growth promotion (PGP) traits. Bacterial inoculants can contribute to increase agronomic efficiency by reducing production costs...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nitrogen fixation; Siderophore production; Plant-bacteria interaction; Inoculant; Rhizosphere.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572015000400401

Autonomous growth of BALB/MK keratinocytes transfected   with a retroviral vector carrying the human epidermal growth factor gene
Provedor de dados: 74
Autores: Choudhuri,Jomuna V.; Mathor,Monica B.; Silva,Flávia H.; Han,Sang W.
Epidermal growth factor (EGF), which promotes epidermal regeneration and wound closure, is important for the proliferation and differentiation of epidermal and epithelial tissues in animals. Exogenous EGF is a promising therapeutic agent for wound healing, but its general use is restricted by the limited availability of this protein. In this work, we show that the transfection of mouse BALB/MK keratinocytes, which are totally dependent on EGF for growth and migration, with mature cDNA for human EGF via a retroviral vector abolished the cells requirement for exogenous EGF. The transformed cells had normal morphology and a growth rate that varied according to the source of the retroviral vector used. Keratinocyte transfection with EGF cDNA provides a time-...
Palavras-chave: BALB/MK keratinocytes; Epidermal growth factor; Retroviral vector.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000500003

Hepatic mRNA expression and plasma levels of insulin-like growth factor-I (IGF-I) in broiler chickens selected for different growth rates
Provedor de dados: 74
Autores: Giachetto,Poliana Fernanda; Riedel,Eduardo Correa; Gabriel,Jane Eyre; Ferro,Maria Inês Tiraboschi; Di Mauro,Sônia Marli Zingaretti; Macari,Marcos; Ferro,Jesus Aparecido.
The hepatic expression and plasma concentrations of IGF-I were investigated in three broiler chicken strains selected for different growth rates (HP-Hubbard-Pettersen, a fast growing strain; NN-Naked-neck, a strain with an intermediate growth rate and a heterozygous genotype, and C-Caipira, a slow growing crossbred strain). The chickens were studied at 1, 21 and 42 days of age and had free access to food throughout the study. Hepatic IGF-I mRNA expression was assessed by dot blot analysis using a randomly labeled chicken IGF-I cDNA as the probe and plasma IGF-I concentrations were assayed by radioimmunoassay. The hepatic levels of IGF-I mRNA increased from 1 to 21 days of age in all strains, with NN chickens showing a higher (p &lt; 0.05) IGF-I expression...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: IGF-I mRNA; Broiler chicken; Growth performance; Plasma IGF-I.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572004000100007

Growth, assimilate partition and yield of melon charenthais under different shading screens
Provedor de dados: 75
Autores: Pereira,FHF; Puiatti,M; Finger,FL; Cecon,PR.
In this experiment we evaluated the growth, partition of assimilates and yield of melons type hybrid Charenthais 'Fleuron' under different shading nets. The experiment was conducted at Federal University of Viçosa, from November 24, 2003 to March 11, 2004. The treatments consisted of four growth environmental conditions, as follows: control (full sun), and under Aluminet® 30%-O, Cromatinet® 30%-O, Sombrite® 30%, with reduction of photosynthetic active radiation (PAR) of 30.85%, 35.9% and 32.0%, respectively. The experiment was arranged in a complete random design with four replicates. For the periodically evaluated characteristics we used a sub divided parcel 4 x 7 with the growing conditions in the parcel and the evaluations on the sub parcel (0, 14, 28,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucumis melo; Light; Leaf area; Dry weight; Yield.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362011000100015

Supplemental LED lighting increases pansy growth
Provedor de dados: 75
Autores: Koksal,Nezihe; Incesu,Meral; Teke,Ahmet.
ABSTRACT: Pansy (Viola cornuta) is a facultative long-day plant that flowers from October until March in Turkey. During the winter months, low light levels can limit plant growth and development. Light emitting diodes (LEDs) can provide supplemental lighting in greenhouses which produce same light intensity with less energy than conventional incandescent lighting. Light emitting diode technologies have enabled affordable and efficient light systems to be installed in greenhouses and plastic tunnels in the field. In this experiment we evaluated the effects of supplemental red-orange LED lightening on the growth and development of pansy cv. Blue Blotch grown in plastic tunnels. The energy, which LEDs are to consume, was provided through a solar panel system...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Viola cornuta; Solar energy; Ornamental plants.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362015000400428

Physiological and agronomic traits of cabbage plants hybrid Fuyutoyo ® sprayed with plant growth regulators
Provedor de dados: 75
Autores: Zeist,André R; Piva,Rafael; Resende,Juliano TV; Silva,Israel FL; Athanázio,João C; Rodrigues,João D.
ABSTRACT In this study we aimed to evaluate the effect of using the mixture of plant growth regulators auxin, gibberellin and cytokinin in the physiological behavior and productive components of cabbage plants hybrid Fuyutoyo®. The experimental design was completely randomized, with four replications, evaluating five doses of the mixture of plant growth regulators, in the form of the commercial product   Stimulate® (0, 50, 100, 150 and 200 mL p.c./100 L H2O). The spray applications of plant growth regulators started when the plants presented 7-8 expanded leaves, carried out fortnightly, totaling five applications along the cycle. The authors evaluated gas exchange measures; fresh mass, diameter and firmness of “heads”; and number of leaves. The study...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brassica oleracea var. capitata; Plant growth regulators; Gas exchange.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362017000200210

Затраты энергии на дыхание, рост и размножение у Artemia salina (L.)
Provedor de dados: 13
Autores: Хмелева Н. Н.
The size-weight relations, caloric value, fat content, number of eggs produced, respiration and growth of Artemia salina were determined. According to the data obtained the total energy budget for Artemia has been calculated for different periods and for the whole life-time equal to 130 days. The energy of the food assimilated during the whole life is 60 calories per animal, and 120 cal of consumed food. A shrimp consumes during this time 24 mg of dry weight of food, the latter amounts to 5 cal/mg. The daily ration during the reproduction period was found to be 0.2 mg of dry weight of food per specimen, that gives about 40% of dry body weight of Artemia. The growth coefficient of the first order (K1) and the second order (K2) were determined. The first is...
Tipo: Journal Contribution
Ano: 1968
URL: http://10.0.0.194:8080/dspace/handle/99011/3024

Определение  возраста и  расчет  темпа роста светящегося  анчоуса Myctophum asperum (Myctophidae) по микроструктуре оттолитов
Provedor de dados: 13
Autores: Гирагосов, В. Е.
При  исследовании микроструктуры отолитов массового для тропической Атлантики светящегося анчоуса Myctophum asperum  выявлено наличие трех зон роста, соответствующих основным этапам онтогенеза. Отложение в отолитах ежесуточных отметок роста позволяет определить возраст  рыб и оценить с  помощью метода обратных раскислений темп их роста. Установлено,  что  половое созревание  М. asperum  происходит в  8-месячном возрасте, продолжительность жизни обычно  не превышает одного года. Значительная величина удельной суточной  продукции М. asperum  (0,022 в среднем за  год  жизни)  характеризует его как высокопродуктивный вид.
Tipo: Journal Contribution
Ano: 2000
URL: http://repository.ibss.org.ua/dspace/handle/99011/1183

Простейшие модели роста микроводорослей. I. Периодические культуры.
Provedor de dados: 13
Autores: Тренкеншу, Р. П.
Предложены простейшие математические модели для описания различных фаз роста микроводорослей в периодической культуре.  Кинетические характеристики роста – удельная скорость и продуктивность - выражены через плотность культуры в начале или конце фазы роста. Константами уравнений служат максимальные значения удельной скорости роста, продуктивности и удельной скорости темнового дыхания. Полученные уравнения позволяют количественно описать динамику роста и развития микроводорослей при периодическом (накопительном) способе выращивания клеток. Если в опытах измеряются биохимические показатели, то полученные уравнения можно применить для описания динамики исследуемых компонентов клеток и найти соотношение кинетических характеристик. http://biotex.ibss.org.ua/
Tipo: Journal Contribution
Ano: 2005
URL: http://repository.ibss.org.ua/dspace/handle/99011/878

Ciclo de vida pós-marsupial e crescimento de Metamysidopsis elongata atlantica (Crustacea, Mysidacea, Mysidae) em cultivo de laboratório
Provedor de dados: 76
Autores: Gama,Andréa Mara da Silva; Montú,Mônica Adelina; Gusmão,Luiz Felipe M. de.
Metamysidopsis elongata atlantica (Bacescu, 1968) was reared in the laboratory for 45 days at 20±1°C and salinity of 30ppt. Growth curves (von Bertalanffy model) were calculated for both sexes and for each sex. The daily rate of carapace growth was significantly different between females and males (F test, p &lt;0.05). Before the sexual maturity (14 days), the growth rate of females was higher than that of males (females, 0.0457 mm day-1; males, 0.0448 mm day-1). After the maturity (15 to 45 days), these rates decreased similarly for both sexes (females, 0.0203 mm day-1; males, 0.0174mm day-1). The average growth rate was 0.0207mm day-1 over the 45 days. Twelve molts were observed in a period of 60 days. The first five molts occurred up to 14 days old (age...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crustacea; Mysidae; Metamysidopsis; Growth; Molts.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212002000100006

Growth of the common Cockle Cerastoderma edule : Validation of the periodicity of increment deposition by Calcein marker
Provedor de dados: 5
Autores: Bellamy, Elise; Mahe, Kelig; De Rafelis, Marc; Lartaud, Franck.
Cockle (Cerastoderma edule) growth has not been studied a lot yet and the current approach of counting external ridges in order to make age estimation is limited. Nevertheless, growth is a key parameter for monitoring bivalves populations, which are heavily exploited in French estuaries. The Bay of Somme which is located in the eastern Channel in the north of France, is the first French field of cockles (Cerastoderma edule). In order to improve stock management, it is necessary to increase our knowledge of this species. This study is looking at the growth of the common cockle.  In this way, recapture of shells previously marked under calcein marker and then breed in natural conditions in the Bay of Somme, was performed in order to determine the shell...
Tipo: Text
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00011/12268/9053.pdf

Reconstructing individual shape histories of fish otoliths: A new image-based tool for otolith growth analysis and modeling
Provedor de dados: 5
Autores: Fablet, Ronan; Chessel, Anatole; Carbini, Sebastien; Benzinou, Abdesslam; De Pontual, Helene.
In this paper is presented a novel image processing tool for the extraction of geometric information in otolith images. It relies on the reconstruction of individual otolith shape histories from otolith images. Based on the proposed non-parametric level-set representation of otolith shape history, applications to the extraction of growth axes and ring structures in otolith images are first considered. A second category of applications concern the analysis of 2D otolith growth. The potential of the proposed framework is illustrated on real otolith images for various species (e.g., cod, pollock) and discussed with a particular emphasis on the genericity of the approach and on applications such as otolith shape analysis, multi-proxy otolith analysis, otolith...
Tipo: Text
Palavras-chave: 2D otolith growth; Growth axis extraction; Growth ring extraction; Shape dynamics; Otolith imaging.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6319.pdf

Screening and selection of growth-promoting bacteria for Dunaliella cultures
Provedor de dados: 5
Autores: Le Chevanton, Myriam; Garnier, Matthieu; Bougaran, Gael; Schreiber, Nathalie; Lukomska, Ewa; Berard, Jean-baptiste; Fouilland, E.; Bernard, Olivier; Cadoret, Jean-paul.
Previous studies have demonstrated that bacteria influence microalgal metabolism, suggesting that the selection and characterization of growth-promoting bacteria should offer a new strategy for improving industrial algal cultivation. In the present study, 48 cultivable bacteria were isolated from marine microalgae species and identified using 16S rRNA phylogenetic analysis. The recovered bacteria were found to be members of the α- and γ-Proteobacteria, Cytophaga–Flavobacterium–Bacteroides (CFB) and gram-positive monophyletic clusters. To address the effect of these bacteria on the growth of Dunaliella sp. individually, an experimental high-throughput tool was developed to simultaneously compare replicated associations. A two-step approach was used to...
Tipo: Text
Palavras-chave: Microalgae; Dunaliella; Bacteria; Interaction; Bacterial diversity.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00142/25334/24768.pdf

Domestication and Temperature Modulate Gene Expression Signatures and Growth in the Australasian Snapper     Chrysophrys auratus
Provedor de dados: 5
Autores: Wellenreuther, Maren; Le Luyer, Jeremy; Cook, Denham; Ritchie, Peter A.; Bernatchez, Louis.
Identifying genes and pathways involved in domestication is critical to understand how species change in response to human-induced selection pressures, such as increased temperatures. Given the profound influence of temperature on fish metabolism and organismal performance, a comparison of how temperature affects wild and domestic strains of snapper is an important question to address. We experimentally manipulated temperature conditions for F1-hatchery and wild Australasian snapper (Chrysophrys auratus) for 18 days to mimic seasonal extremes and measured differences in growth, white muscle RNA transcription and hematological parameters. Over 2.2 Gb paired-end reads were assembled de novo for a total set of 33,017 transcripts (N50 = 2,804). We found...
Tipo: Text
Palavras-chave: Domestication; Temperature; Transcriptomics; Growth; Sparidae.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00476/58788/61321.pdf

Use of dynamic energy budget and individual based models to simulate the dynamics of cultivated oyster populations
Provedor de dados: 5
Autores: Bacher, Cedric; Gangnery, Aline.
We successfully tested a Dynamic Energy Budget (DEB) model of the oyster Crassostrea gigas using published environmental data and growth data collected in Than lagoon (France). Estimates of most DEB parameters were based on independent datasets and only two parameters were calibrated using our datasets: the shape parameter, which was used to convert body volume into shell length, and the half-saturation coefficient, which controlled the functional response of assimilation to food concentration, represented by chlorophyll-a concentration. The DEB model proved to be robust and generic: it was able to reproduce oyster growth in Than lagoon and other ecosystems. We also assessed population dynamics by coupling DEB equations and an Individual Based Model (IBM)...
Tipo: Text
Palavras-chave: Thau Lagoon; Growth variability; Harvested production; Dynamic Energy Budget; Crassostrea gigas.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-2329.pdf

Age, growth and mortality of the striped seabream   Lithognathus mormyrus   (Linnaeus, 1758) in the Gulf of Tunis (Central Mediterranean Sea)
Provedor de dados: 5
Autores: Khaldi, Asma; Chater, Ines; Elleboode, Romain; Mahé, Kelig; Chakroun-marzouk, Nadia.
Despite the high commercial value of the striped seabream Lithognathus mormyrus (Linnaeus, 1758) in the Gulf of Tunis, biological data on its age, growth and exploitation rate are lacking. With the aim of estimating growth parameters, 516 individuals, ranging from 6–27.5 cm total length and from 3.5–293.5 g total weight, were collected from the artisanal fishing fleet between February 2014 and July 2016. The somatic growth presented a positive allometry and was described by the equation TW = 6.54 10−3TL3.213. The monthly analysis of the marginal increment of the otoliths revealed that only one annulus was deposited per year. The estimated von Bertalanffy growth parameters were: L∞ = 30.18 cm, k = 0.303 year−1 and t0 = −1.42 years. Total and natural...
Tipo: Text
Palavras-chave: Age; Growth; Gulf of Tunis; Lithognathus mormyrus; Lopt; Mortality; Otolithometry; Sparidae; Weight–length relationship.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00676/78770/80945.pdf

Aneuploidy and its relationship with growth in different populations of the Pacific oyster (Crassostrea gigas, Thunberg)
Provedor de dados: 5
Autores: Boudry, Pierre; Leitao, Alexandra; Mccombie, Helen; Thiriot-quievreux, Catherine.
Cytogenetic abnormalities arising both in mitosis and meiosis are known to be common in bivalves. Here we review result obtained from the observations of somatic aneuploidy in different populations of the commercially important Pacific oyster, Crassostrea gigas. The oysters studied were either (1) produced in IFREMER hatcheries between 1986 and 1999, (some of these were part of the EU funded programme GENEPHYS); or (2) collected from wild populations along the French Atlantic coast. Chromosome numbers were scored from 30 mitotic metaphases in gill tissue per  individual studied. Aneuploid cells (2n - X) were observed in all the 13 populations studied. A highly significant negative correlation was observed between the level of aneuploidy and growth, i.e....
Tipo: Text
Palavras-chave: Growth; Genetic; Aneuploidy; Crassostrea gigas; Pacific oysters.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/2000/acte-3446.pdf

Optimal control of bacterial growth for the maximization of metabolite production
Provedor de dados: 5
Autores: Yegorov, Ivan; Mairet, Francis; De Jong, Hidde; Gouze, Jean-luc.
Microorganisms have evolved complex strategies for controlling the distribution of available resources over cellular functions. Biotechnology aims at interfering with these strategies, so as to optimize the production of metabolites and other compounds of interest, by (re)engineering the underlying regulatory networks of the cell. The resulting reallocation of resources can be described by simple so-called self-replicator models and the maximization of the synthesis of a product of interest formulated as a dynamic optimal control problem. Motivated by recent experimental work, we are specifically interested in the maximization of metabolite production in cases where growth can be switched off through an external control signal. We study various optimal...
Tipo: Text
Palavras-chave: Optimal control; Nonlinear dynamical systems; Mathematical modelling; Bacterial growth; Biotechnology.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00486/59791/63028.pdf

Comparative effects of long-term hypoxia on growth, feeding and oxygen consumption in juvenile turbot and European sea bass
Provedor de dados: 5
Autores: Pichavant, Karine; Person, Jeannine; Le Bayon, Nicolas; Severe, Armelle; Le Roux, Annick; Boeuf, Gilles.
When juvenile turbot Scophthulmus maximus and sea bass Dicentrarchus labrax were fed to satiation, growth and food intake were depressed under hypoxia (3.2 +/- 0.3 and 4.5 +/- 0.2 mg O-2 l(-1)). However, no significant difference in growth was observed between fishes maintained in hypoxia and fed to satiation and fishes reared in normoxia (7.4 +/- 0.3 mg O-2 l(-1)) and fed restricted rations (same food intake of fishes at 3.2 mg O-2 l(-1)). Routine oxygen consumption of fishes fed to satiation was higher in normoxia than in hypoxia due to the decrease in food intake in the latter. Of the physiological parameters measured, no significant changes were observed in the two species maintained in hypoxia. This study confirms the significant interaction between...
Tipo: Text
Palavras-chave: Oxygen consumption; Growth; Hypoxia; Sea bass; Turbot.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/publication-617.pdf

Statistical learning applied to computer-assisted fish age and growth estimation from otolith images
Provedor de dados: 5
Autores: Fablet, Ronan.
Computer-assisted tools need to be developed to help in the accurate and efficient acquisition of fish age and growth data for ecological and assessment issues. Stating fish age and growth analysis as pattern classification issues, the proposed approach relies on a statistical learning strategy. Given otolith images interpreted by an expert, probabilistic kernel-based methods (namely Kernel Logistic Regression) are used to infer interpretation rules. More precisely, two different probabilistic models are introduced: one to infer fish age from otolith images and a second one aiming at evaluating whether or not a given otolith growth pattern is realistic w.r.t. training examples. These probabilistic models provide us with the basis for coping with three...
Tipo: Text
Palavras-chave: Computer assisted fish age and growth analysis; Otolith image analysis; Otolith interpretation; Statistical learning.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-2136.pdf

Links between patterns of marine growth and survival of Atlantic salmon Salmo salar, L.
Provedor de dados: 5
Autores: Peyronnet, Arnaud; Friedland, K; Maoileidigh, N. Ó; Manning, M; Poole, Marine Institute.
The hypothesis that marine survival of Atlantic salmon Salmo Salar is linked to marine growth was explored by using inter-circuli distances and total numbers of circuli existing on scales from a population monitored over nearly four decades. The results suggest that marine growth controls survival, particularly during the late summer and early winter of the first year at sea. Recruitment is strongly linked to growth, described as the total number of circuli, but not to inter-circuli distances. This highlights the potential of patterns of circuli number to be considered as proxies for growth. Indications that hatchery populations might be subject to other mortality events, in addition to those experienced by wild populations, are also presented. (C) 2007...
Tipo: Text
Palavras-chave: Survival; Post smolt; Growth; Circuli; Atlantic salmon.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-3230.pdf

Application of a bioenergetic growth model to larvae of the pearl oyster Pinctada margaritifera L.
Provedor de dados: 5
Autores: Thomas, Yoann; Garen, Pierre; Pouvreau, Stephane.
We applied, for the first time, a dynamic energy budget (DEB) growth model to the larval phase in the pearl oyster Pinctada margaritifera var. cumingii (Linnaeus, 1758) to evaluate the impact of spatio-temporal variation in the atoll lagoon environment on its capacity for development. The specific parameters of the model, which represent ingestion, temperature effect and the relationship between length and biovolume of the larvae, were determined from experiments or taken from the literature. The interpretation of the values of these parameters allowed us to identify the underlying adaptive character trait: P. margaritifera larvae have a good capacity to exploit low food concentrations and a narrow range of thermal tolerance restricted to hydrobiological...
Tipo: Text
Palavras-chave: Growth Model; Dynamic Energy Budget; Larva; Pinctada Margaritifera; Atoll Lagoon.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00048/15919/13346.pdf

Genotype by environment interactions for growth in European seabass (Dicentrarchus labrax) are large when growth rate rather than weight is considered
Provedor de dados: 5
Autores: Dupont-nivet, Mathilde; Karahan-nomm, Bilge; Vergnet, Alain; Merdy, Olivier; Haffray, Pierrick; Chavanne, Herve; Chatain, Beatrice; Vandeputte, Marc.
Two hundred fifty three full-sib families from 33 males and 23 females of European seabass were produced in a partly factorial mating design. All fish were reared in the same tank for 14 months until reaching mean weight of 35 g. then 7000 of them were individually tagged and weighed, and dispatched to four farms in different locations (France, Israel, Italy and Portugal) representing a wide variety of environmental conditions. Around mean weight of 400 g. 1177 to 1667 fish at each site were weighed. Daily growth coefficient (DGC) was calculated. Pedigrees were successfully redrawn for 99.2% of fish using microsatellite markers. Genetic correlations between sites were high for body weight (&gt;0.80 in all cases but one, i.e., five cases over six), but only...
Tipo: Text
Palavras-chave: Dicentrarchus labrax; Seabass; Growth; Daily growth coefficient; Heritability; G x E interactions; Aquaculture.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00011/12256/9227.pdf

May life history traits be used as indices of population viability?
Provedor de dados: 5
Autores: Rochet, Marie-joelle.
Concern has been raised that the widely used spawning stock biomass might not be a sensitive index of the reproductive potential of fish populations. On the other hand, there is increasing evidence that fishing affects life history traits of fish. Fish compensate for fishing mortality by faster growth, earlier maturity and increased fecundity. Because life history traits are affected by fishing and are also critical in determining the population growth rate, they may be used as indices of population viability. In this paper, the traits that meet both criteria are investigated among age-at-maturity, fecundity and growth. In the framework of matrix population models, the life table response experiments (LTRE) method is used to quantify the effects of fishing...
Tipo: Text
Palavras-chave: Fishing effects; Population growth rate; Sensitivity analysis; Population viability indices.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/2000/publication-482.pdf

Biofouling development and its effect on growth and reproduction of the farmed pearl oyster Pinctada margaritifera
Provedor de dados: 5
Autores: Lacoste, Elise; Le Moullac, Gilles; Levy, Peva; Gueguen, Yannick; Gaertner-mazouni, Nabila.
In bivalve aquaculture, dominant fouling organisms are filter feeders which can compete for food with reared bivalves, sometimes causing mortality or reducing their growth rate. This study investigated the effect of biofouling on the farmed pearl oyster Pinctada margaritifera in two lagoons of French Polynesia. Survival, growth and reproduction of 2 year-old pearl oysters were monitored with regular sampling schedules, from the initial stage of colonization up to 20 months of biofouling accumulation. Control groups of pearl oysters were kept free of biofouling as is the current practice in pearl farms. After more than a year of monitoring, no significant difference was recorded in shell growth rate between pearl oysters reared with epibionts and the...
Tipo: Text
Palavras-chave: Pearl oyster culture; Pinctada margaritifera; Biofouling; Growth; Reproduction.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00201/31188/29587.pdf

The growth of the abalone Haliotis Tuberculata L. in Bay of Brest
Provedor de dados: 5
Autores: Cochard, Jean-claude.
The growth of H. tuberculata L. was studied by analysing the distribution of the growth checks on the shell of 640 individuals. The average lengths of the seven first rings including the first one appear to fit weIl to the Von Bertalanffy model. The value of the growth parameter K = 0,33 is rather similar to those cited in Litterature for the same species but the average attainable size L%= 97,5 seems to be low in this area.
Tipo: Text
Palavras-chave: Growth rings; Growth; Abalone; Ormer; Haliotis tuberculata.
Ano: 1982
URL: http://archimer.ifremer.fr/doc/1982/publication-6380.pdf

Association among growth, food consumption-related traits and amylase gene polymorphism in the Pacific oyster Crassostrea gigas
Provedor de dados: 5
Autores: Huvet, Arnaud; Jeffroy, F; Fabioux, C; Daniel, Jean-yves; Quillien, Virgile; Van Wormhoudt, A; Moal, Jeanne; Samain, Jean-francois; Boudry, Pierre; Pouvreau, Stephane.
To examine further a previously reported association between amylase gene polymorphism and growth in the Pacific oyster Crassostrea gigas, ecophysiological parameters and biochemical and molecular expression levels of alpha-amylase were studied in Pacific oysters of different amylase genotypes. Genotypes that previously displayed significantly different growth were found to be significantly different for ingestion and absorption efficiency. These estimated parameters, used in a dynamic energy budget model, showed that observed ingestion rates (unlike absorption efficiencies) allowed an accurate prediction of growth potential in these genotypes. The observed association between growth and amylase gene polymorphism is therefore more likely to be related to...
Tipo: Text
Palavras-chave: Ingestion; Gene expression; Bivalve; Alpha amylase.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-5165.pdf

Summer mortality of hatchery-produced Pacific oyster spat (Crassostrea gigas). I. Estimation of genetic parameters for survival and growth
Provedor de dados: 5
Autores: Degremont, Lionel; Ernande, Bruno; Bedier, Edouard; Boudry, Pierre.
The multidisciplinary project "MOREST" aims to improve our understanding of causes of summer mortality in Crassostrea gigas juveniles in France and to reduce its impact on oyster production. As pail of the MOREST project, 43 full-sib families nested within 17 half-sib families were produced, planted out and tested in 3 sites during summer 2001 to assess to what extent genetic variability exists for this trait. A strong genetic basis was found for survival as narrow-sense heritability estimates ranged from 0.47 to 1.08, with higher values in sites where summer mortality was higher. Genetic correlations across sites were positive and very high for survival, indicating no genotype by environment interaction. In contrast, lower genetic variation was observed...
Tipo: Text
Palavras-chave: Growth; Survival; Juveniles; Heritability; Crassostrea gigas.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-2457.pdf

Croissance lineaire et ponderale des jeunes Diplodus sargus 0+ (Pisces Osteichthyes Sparidae) des etangs languedociens de Mauguio et du Prevost.
Provedor de dados: 5
Autores: Quignard, Jean-pierre; Man-wai, Rabenevanana.
The growth of Diplodus sargus Phi super(+) (sea bream) from the brackish ponds of Palavas (Mauguio and Prevost, South of France) has been studied. The growth rate of this species is higher in summer than in winter (the growth stops) or even in spring or autumn. Comparative growth studies have shown that one year old specimens from the coast of Lebanon and also those obtained by aquaculture are larger and heavier than those from Mauguio and Prevost ponds.
Tipo: Text
Palavras-chave: Brackishwater Languedoc Roussillon MED; France Diplodus sargus seasonal variations aquaculture ponds fish culture growth curves growth.
Ano: 1981
URL: http://archimer.ifremer.fr/doc/1981/publication-1888.pdf

Physiology and continuous culture of the hyperthermophilic deep-sea vent archaeon Pyrococcus abyssi ST549
Provedor de dados: 5
Autores: Godfroy, Anne; Raven, N; Sharp, R.
The deep-sea vent archaeon Pyrococcus abyssi strain ST549 was grown in batch cultures in closed bottles and by continuous culture in a gas-lift bioreactor, both in the presence and in the absence of elemental sulfur. Growth on carbohydrates, proteinaceous substrates and amino acids was investigated. The disaccharides maltose and cellobiose were shown not to be able to enhance growth suggesting that P. abyssi ST549 is unable to use them as carbon sources. By contrast, proteinaceous substrates such as peptone and brain heart infusion were shown to be very good substrates for the growth of P. abyssi ST549 and allowed growth at high steady-state cell densities in continuous culture. Growth on brain heart infusion was shown to require additional nutrients when...
Tipo: Text
Palavras-chave: Sulfur requirement; Continuous culture; Nutrition; Hyperthermophile; Pyrococcus abyssi.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/2000/publication-1087.pdf

Growth, Shedding and Food Intake in Captive Eunectes murinus (Linnaeus, 1758) (Serpentes: Boidae)
Provedor de dados: 77
Autores: Lamonica,Rita de Cássia; Abrahao-Charles,Henrique; Loguercio,Mariana Fiuza de Castro; Rocha-Barbosa,Osear.
The anaconda Eunectes murinus (Linnaeus, 1758) inhabits large hydrographic basins in tropical America and figures among the world's largest snakes, attaining a length of 12 m. This study analyzed the growth of three female anaconda siblings, with records from their birth in captivity up to around 14 months of age. The snakes were kept in a controlled environment with constant temperature and data related to biometry, feeding and skin shedding were recorded. At the end of these 445 days, the siblings had grown on average 2.6 times their initial length and increased their initial weight by 3830.lOg, incorporating about 43.5% of total food ingested to their body mass. They showed a total of 0.69 skin sheddings per month in that period, and did not exhibit...
Tipo: Journal article
Palavras-chave: Anaconda; Biometry; Litter; Ecdysis; Ontogeny.
Ano: 2007
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000100014

Postnatal Developmental Anatomy of Testes and Epididymis of Gaddi Goats
Provedor de dados: 77
Autores: Pathak,Archana; Katiyar,R. S; Sharma,D. N; Farooqui,M. M.
The study revealed that the testes of one-day-old Gaddi goats have descended in the scrotum along with adnexa. They were elongated compressed latero-medially and became ovoid during their postnatal growth and morphogenesis. The two testes were not different significantly in their weight and measurement. The average weight which was about 2.9 gm at birth grew to 107 gm (40X) in pubertal animals and nearly maintained it during the post-puberty (113 g). The mean length (1.46 cm), width (0.85 cm) and thickness (0.62 cm) also grew by 47, 60, and 83 times, respectively. In post-pubertal animals it measured 7.06 x 5.20 x 5.10 cm. The study indicated a very fast growth of the testes from birth to puberty, which did not alter significantly after that. A relatively...
Tipo: Journal article
Palavras-chave: Postnatal developmental; Anatomy; Testes; Epididymis; Gaddi goats.
Ano: 2014
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000400043

MECHANISMS AND PRACTICAL CONSIDERATIONS INVOLVED IN PLANT GROWTH PROMOTION BY RHIZOBACTERIA
Provedor de dados: 126
Autores: Martínez-Viveros,O; Jorquera,M.A; Crowley,D.E; Gajardo,G; Mora,M.L.
Rhizobacteria are capable of stimulating plant growth through a variety of mechanisms that include improvement of plant nutrition, production and regulation of phytohormones, and suppression of disease causing organisms. While considerable research has demonstrated their potential utility, the successful application of plant growth promoting rhizobacteria (PGPR) in the field has been limited by a lack of knowledge of ecological factors that determine their survival and activity in the plant rhizosphere. To be effective, PGPR must maintain a critical population density of active cells. Inoculation with PGPR strains can temporarily enhance the population size, but inoculants often have poor survival and compete with indigenous bacteria for available growth...
Tipo: Journal article
Palavras-chave: Agricultural inoculant; Phytohormone; Phytopathogen biocontrol; Plant nutrition; Rhizosphere.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162010000100006

The species problem in Millepora
Provedor de dados: 16
Autores: Boschma, H.
CONTENTS I. Introduction............. 3 II. Historical notes, including the successive views concerning the specific value of the growth forms.......... 6 III. The species of the genus Millepora........ 18 IV. Synonymy and geographical distribution....... 23 V. Discussion of the various characters for specific distinction .................................................... 44 VI. Notes on specimens of Millepora from the islands Edam and Noordwachter in the Java Sea........... 71 VII. Notes on specimens of Millepora in the Paris Museum ............................................................... 79 VIII. Notes on specimens of Millepora in the Leiden Museum ............................................................. 86 IX. Notes on specimens of...
Tipo: Article / Letter to the editor
Palavras-chave: 42.72.
Ano: 1948
URL: http://www.repository.naturalis.nl/record/317591

Notes on eel larvae (Anguilla anguilla Linnaeus, 1758) from the central and eastern North Atlantic and on glass eels from the European continental shelf
Provedor de dados: 16
Autores: Utrecht, W.L. van; Holleboom, M.A.
Eel larvae caught in the mid North Atlantic and along the continental slope off the Portuguese coast are studied together with samples of glass eels caught just before entering fresh water along the Dutch and French coasts. During their migration from the mid Atlantic towards the continental slope the mean length of the larvae investigated increased from 56 to 66 mm, while the mean diameter of their otoliths increased from 0.17 to 0.23 mm. The animals from the mid Atlantic had three complete growth zones in their otoliths, while the majority of those from the continental slope had four complete growth zones. The specimens from the mid Atlantic show typical larval aspects as e.g. position of the anus and reaction to preservation, this in contrast to most of...
Tipo: Article / Letter to the editor
Ano: 1985
URL: http://www.repository.naturalis.nl/record/504158

Transplantation experiments with Caribbean Millepora species (Hydrozoa, Coelenterata), including some ecological observations on growth forms
Provedor de dados: 16
Autores: Weerdt, Wallie H. de.
The historical background of the taxonomic problems in the fire-coral, Millepora, is reviewed. The growth forms of the Caribbean species: Millepora alcicornis Linnaeus, M. complanata Lamarck and M. squarrosa Lamarck are investigated in relation with environmental factors: water movement, current, light and turbidity. Several sites on Curaçao and Bonaire were visited and all forms of Millepora collected. The localities have been divided in biotopes and the relative frequencies of the growth forms in these biotopes were studied. Some relations between growth forms and environment were found: delicately branched forms appear in deeper, quieter waters, sturdy forms in sites with strong water movement, incrusting forms in turbid and also in turbulent sites. At...
Tipo: Article / Letter to the editor
Ano: 1981
URL: http://www.repository.naturalis.nl/record/504243

The Sonic Hedgehog Pathway Stimulates Prostate Tumor Growth by Paracrine Signaling and Recaptures Embryonic Gene Expression in Tumor Myofibroblasts
Provedor de dados: 17
Autores: Aubie Shaw; Jerry Gipp; Wade Bushman.
The Hedgehog (Hh) pathway contributes to prostate cancer growth and progression. The presence of robust Shh expression in both normal prostate and localized cancer challenged us to explain the unique growth promoting effect in cancer. We show here that paracrine Hh signaling exerts a non-cell autonomous effect on xenograft tumor growth and that Hh pathway activation in myofibroblasts alone is sufficient to stimulate tumor growth. Nine genes regulated by Hh in the mesenchyme of the developing prostate were found to be regulated in the stroma of Hh over-expressing xenograft tumors. Correlation analysis of gene expression in matched specimens of benign and malignant human prostate tissue revealed a partial 5 gene fingerprint of Hh-regulated expression in...
Tipo: Manuscript
Palavras-chave: Cancer; Developmental Biology.
Ano: 2009
URL: http://precedings.nature.com/documents/3682/version/1

Age and growth of the Amazonian migratory catfish Brachyplatystoma rousseauxii in the Madeira River basin before the construction of dams
Provedor de dados: 83
Autores: Hauser,Marília; Doria,Carolina R. C.; Melo,Larissa R. C.; Santos,Ariel R.; Ayala,Daiana M.; Nogueira,Lorena D.; Amadio,Sidinéia; Fabré,Nídia; Torrente-Vilara,Gislene; García-Vásquez,Áurea; Renno,Jean-François; Carvajal-Vallejos,Fernando M.; Alonso,Juan C.; Nuñez,Jésus; Duponchelle,Fabrice.
ABSTRACT The goliath catfish Brachyplatystoma rousseauxii has crucial economical and ecological functions in the Amazon basin. Although its life history characteristics have been studied in the Amazon, there is little information in the Madeira River basin, which holds genetically distinct populations and where dams were recently built. Using fish collected in Bolivia, Brazil and Peru, this study provides a validation of growth rings deposition and details the growth patterns of B. rousseauxii in the Madeira before the dams’ construction. Age structure and growth parameters were determined from 497 otolith readings. The species exhibits two growth rings per year and sampled fish were between 0 and 16 years old. In the Brazilian portion of the basin, mainly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon; Biannual rings; Goliath catfish; Life cycle; Otolith.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000100217

Reproductive life history of Heterandria bimaculata (Heckel, 1848) (Poeciliinae: Poeciliidae) in the Honduran interior highlands: trait variation along an elevational gradient
Provedor de dados: 83
Autores: Olinger,Charles T.; Peoples,Brandon K.; Frimpong,Emmanuel A.
Abstract This study examined reproductive traits and growth rates of Heterandria bimaculata (Poeciliidae) in Cusuco National Park (CNP), a cloud forest reserve in northern Honduras, Central America. In CNP, H. bimaculata occurs in the absence of other fish species and major invertebrate predators along an approximately 1000 m elevation gradient. This allowed for the examination of trait variation along the gradient without the confounding effects of interspecific interactions or habitat patchiness. Heterandria bimaculata exhibited traits characteristic of a low-predation environment: balanced sex ratio, slow growth, late maturity and large female size. Females produced more, smaller eggs from upstream to downstream, but overall reproductive allocation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Central America; Fecundity; Growth rate; Livebearer; Offspring size.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000100003

Biology of growth of Hoplias aff. malabaricus (Bloch, 1794) in a shallow pampean lake (Argentina)
Provedor de dados: 83
Autores: Balboni,Leandro; Colautti,Dario César; Baigún,Claudio Rafael Mariano.
The trahira Hoplias aff. malabaricus is a top predator in pampean shallow lakes and is highly appreciated by recreational anglers and artisanal fishermen. Trahira growth from Yalca shallow lake was determined by lepidological analysis and age validated by marginal increment. When growth was fitted to the von Bertalanffy model, annual classes exhibited a bimodal pattern as a result of the presence of spring and summer annual cohorts associated with a three month spawning season, each period in turn showing different growth patterns. The trahira population-age structure at Yalca shallow lake showed a truncated profile with very low numbers of large adults and few individuals older than three to four years, thus producing an unbalanced length-structure...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Age validation; Biological indices; Neotropical fish; Piscivorous fish; Trahira.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000200022

Age and growth of the Argentine hake Merluccius hubbsi Marini, 1933 in the Brazilian South-Southeast Region during 1996-2001
Provedor de dados: 83
Autores: Vaz-dos-Santos,André M.; Rossi-Wongtschowski,Carmen Lúcia D. B.
This is the first detailed study on the age and growth of the Argentine hake Merluccius hubbsi in Brazilian waters. A total of 3,651 specimens obtained from surveys and sampling landings using trawlers and long-lines in the South-Southeast Region (21ºS to 34ºS) between 1996 and 2001 were analyzed. Readings of sliced and burned otoliths were conducted on 686 individuals (397 females, 129 males and 160 young - sex not identified), identifying opaque and translucent zones. Marginal increment and edge type percentage methods were used for validation, resulting in one ring per year, formed during summer-autumn. Fish with no more than eight rings and six years of age were found, the two first rings after the core being formed during the first year....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Merluccius hubbsi; Growth parameters; Otolith; Age structure; South-Southeastern region of Brazil.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252007000300017

Age and growth of the white croaker Micropogonias furnieri (Perciformes: Sciaenidae) in a coastal area of Southeastern Brazilian Bight
Provedor de dados: 83
Autores: Santos,Rosa S.; Costa,Marcus R. da; Araújo,Francisco G.
ABSTRACT Studies on age and growth of fish populations have direct application in fisheries and contribute for policies of conservation. Our aim was update information on the Micropogonias furnieri growth parameters based on sagittae otoliths annulis readings, and we expected that the studied population from Southeast Brazil can reach more longevity than the reported in the available literature. We examined 286 individuals between August-2010 and July-2011 from Ubatuba Bay, SP. The Total Length ranged 200-480 mm. The determined growth parameters were: Males, L∞ =523.4mm, k = 0.05×year-1, t0 = -8.78 year; Females L∞ = 573.5mm, k = 0.06 × year-1, t0 = -7.49 year. The MI and % of edge type evidenced the formation of one ring per year during autumn/winter,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coastal fishes; Growth parameters; Longevity; Marginal increment; Ubatuba.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000100223

Plasticity in the shape and growth pattern of asteriscus otolith of black prochilodus Prochilodus nigricans (Teleostei: Characiformes: Prochilodontidae) freshwater Neotropical migratory fish
Provedor de dados: 83
Autores: Costa,Rosa Maria Rodrigues da; Fabré,Nidia Noemí; Amadio,Sidinéia Aparecida; Tuset,Víctor Manuel.
ABSTRACT Using morphometric measurements and wavelets functions, the asterisci otoliths of curimatã, Prochilodus nigricans were analysed to identify the variation in shape and growth increment of individuals from Solimões, Japurá and Negro rivers of the Amazon basin, Brazil. The morphometric and morphological analyses did not reveal evidences of population segregation among rivers, but variations were found in the estimation of otolith growth increment. Also, the otolith shape showed a high variability between individuals, identifying four morphotypes. Morphotype 1 shows a more oval shape with a posterior zone clearly rounded; Morphotype 2 shows the posterior zone rounded, but the anterior end is more elongated; Morphotype 3 shows a completely different...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon Basin; Growth increments; Morphotypes; Otolith shape; Phenotypes.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000400215

Effects of delayed first feeding on growth of the silver catfish larvae Rhamdia voulezi (Siluriformes: Heptapteridae)
Provedor de dados: 83
Autores: Lima,Ariane F. de; Andrade,Fernanda F.; Pini,Suelen Fernanda R.; Makrakis,Sergio; Makrakis,Maristela C.
ABSTRACT The effects of the timing of first feeding on the point-of-no-return (PNR) and growth of laboratory reared silver catfish Rhamdia voulezi larvae were studied. The experiment began immediately after the complete absorption of the yolk sac, 3 days after hatching (DAH). The food was provided for the first time on 3rd, 4th, 5th, 6th, 7th, 8th, and 9th DAH. Zooplankton and newly-hatched Artemia spp. were used to feed the larvae. To evaluate the effect of food deprivation on growth, the standard length and weight of 594 larvae were assessed. Larval growth was significantly affected by the time of first exogenous feeding. The larvae fed from 3rd to 5th DAH showed a significantly higher development than those fed from 6th DAH. The larvae reached the PNR...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Exogenous feeding; Initial feeding; Larval development; Point-of-no-return; Starvation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000200205

Characterization of the early development of Pseudoplatystoma reticulatum Eigenmann &amp;amp; Eigenmann, 1889 (Siluriformes: Pimelodidae) from the Paraguay River Basin
Provedor de dados: 83
Autores: Andrade,Fernanda F.; Lima,Ariane F.; Assumpção,Lucileine; Makrakis,Sergio; Kasai,Rodrigo I. D.; Makrakis,Maristela C.
ABSTRACT This study described the initial development of Pseudoplatystoma reticulatum, as well as changes in growth patterns. Morphometric and meristic variables were analyzed during embryonic, larval and juvenile periods, even as allometric growth coefficients for larvae and juveniles. Eggs showed an average diameter of 1.79 mm and broad perivitelline space (23.41%). The total length (TL) of the larvae ranged from 3.05 to 25.72 mm, and the total number of myomeres ranged from 45 to 50 (preanal = 13-16 and postanal = 30-35). Initial pigmentation is poor, concentrated at the extremities of the yolk sac. In the flexion stage, the pigmentation intensifies and forms a longitudinal stripe extending from the snout to the operculum and two longitudinal stripes on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometric growth; Early life stages; Fish larvae; Morphology; Ontogeny.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000200216

Growth of Critically Endangered annual fish Austrolebias wolterstorffi (Cyprinodontiformes: Rivulidae) at different temperatures
Provedor de dados: 83
Autores: Fonseca,Alinca Peres da; Volcan,Matheus Vieira; Sampaio,Luís André; Romano,Luís Alberto; Robaldo,Ricardo Berteaux.
Given the importance of knowledge of the biology of endangered species for the planning of conservation and management efforts, the aim of this study was to investigate the influence of temperature on the growth of Austrolebias wolterstorffi (Ahl, 1924). To clarify the thermal influence on the growth of the species, temperatures of 16, 20, 24 , and 28°C were tested in triplicate. The present study showed that a water temperature of 28°C is detrimental to the growth of the species. Among the other tested temperatures, it was found that the optimum temperature for growth decreases as an individual ages and is slightly lower for females. It was demonstrated here that males reach a higher weight and length, and grow faster than females, reaching sexual...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Endangered species; Length; Maturity; Weight.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000400837

Growth of the Cichla temensis Humboldt, 1821 (Perciformes: Cichlidae) from the middle rio Negro, Amazonas, Brazil
Provedor de dados: 83
Autores: Campos,Caroline Pereira; Freitas,Carlos Edwar de Carvalho; Amadio,Sidineia.
This study aimed to estimate age and growth of the peacock bass Cichla temensis from the rio Negro (Brazilian Amazonia) by analyzing scale annuli. Specimens were captured between October 2011 and September 2012 in the main channel of the river and in adjacent lakes in the municipality of Barcelos, AM, Brazil. Six growth checks were identified on the scales of specimens. The annual variation in body condition observed suggests that fat is accumulated during the dry season. Results for the GSI (gonadosomatic index) showed that peak reproduction occurred in the receding-water period, indicating that the fish had energy deficiencies as a result of reproductive activity. RMI (relative marginal increment) analysis revealed that an annulus is formed once a year...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Age; Hydrological period; Peacock bass; Population parameters; Scales.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000200413

Effect of salinity on survival, growth and biochemical parameters in juvenile Lebranch mullet Mugil liza (Perciformes: Mugilidae)
Provedor de dados: 83
Autores: Lisboa,Viviana; Barcarolli,Indianara Fernanda; Sampaio,Luís André; Bianchini,Adalto.
Teleost fish growth may be improved under isosmotic condition. Growth and metabolic performance of juvenile Mugil liza (isosmotic point: 12‰) were evaluated after 40 days in different salinities (0, 6, 12 and 24‰). Tests were performed in quadruplicate (30 fish/tank; 0.48 ± 0.1 g body weight; 3.27 ± 0.1 cm total length) under controlled water temperature (28.2 ± 0.1ºC) and oxygen content (&gt;90% saturation). Fish were fed on artificial diet (50% crude protein) four times a day until apparent satiation. Results showed that salinity influenced juvenile mullet growth. Fish reared at salinity 24‰ grew better than those maintained in freshwater (salinity 0‰). Gill Na+,K+-ATPase activity and whole body oxygen consumption showed an U-shape-type response over the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycogen; Growth; Metabolism; Na+; K+-ATPase.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000200447

Host Cholesterol Synthesis Contributes to Growth of Intracellular Toxoplasma gondii in Macrophages
Provedor de dados: 19
Autores: NISHIKAWA, Yoshifumi; IBRAHIM, Hany M.; KAMEYAMA, Kyohko; SHIGA, Ikumi; HIASA, Jun; XUAN, Xuenan; 西川, 義文; 玄, 学南.
The intracellular protozoan Toxoplasma gondii lacks the ability to synthesize sterol and scavenges cholesterol from the lowdensity lipoprotein receptor (LDLR) pathway of its host to facilitate replication. Sterol biosynthesis inhibitors, however, have a demonstrated anti-Toxoplasma effect. In this study, we examined the host mevalonate pathway as a novel source of cholesterol for T. gondii and its effects on parasite growth in macrophages. Parasite growth did not significantly change in the absence of LDLR or when LDL was exogenously supplemented. Lovastatin and compactin, both inhibitors of hydroxymethylglutaryl-CoA (HMG-CoA) reductase in the mevalonate pathway, significantly inhibited T. gondii growth in both wild-type and LDLR-knockout macrophages....
Palavras-chave: Cholesterol; Lipid metabolism; Macrophage; Parasitology; Toxoplasma gondii.
Ano: 2011
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3583

Variation in growth at different temperatures and production and size of conidia in hybrid strains of Verticillium lecanii (Lecanicillium spp.) (Deuteromycotina: Hyphomycetes)
Provedor de dados: 19
Autores: AIUCHI, Daigo; BABA, Yukiko; INAMI, Keigo; SHINYA, Ryoji; TANI, Masayuki; KOIKE, Masanori; 相内, 大吾; 谷, 昌幸; 小池, 正徳.
In a previous study, we confirmed alterations in several fungal traits in hybrid strains of Verticillium lecanii generated via protoplast fusion. In the present study, we surveyed radial colony growth in different temperature regimes as well as conidia productivity and conidia size of hybrid strains of V. lecanii to elucidate the various primary fungal properties of these strains and to determine the correlation between these properties and virulence to insect pests. Minimum temperature thresholds for all tested strains (except Vertalec®) were below 5°C. Optimal temperatures for colony growth were 20–25°C. Colony growth at high temperature was good or poor depending on the genotype. Temperature and strain significantly affected colony growth. Conidial...
Palavras-chave: Lecanicillium spp; Phenotypic variation; Protoplast fusion; Temperature growth response; Verticillium lecanii.
Ano: 2008
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2848

Validation of length frequency analysis for boops boops (bogue) growth estimation
Provedor de dados: 20
Autores: El-Haweet, A.; Hegazy, M.; Abu-Hatab, H.; Sabry, E.
Scales reading and length frequency distribution were used for age determination and growth estimation of Boops boops (Bogue) stock of Western Mediterranean Coast of Egypt. Age determination using scale was done and the time of annulus formation was detected by the marginal increment index. Bhattacharya’s method was used for length frequency analysis. Both methods showed 6 age groups. ANOVA test revealed insignificant differences between both estimates of length at age results. Growth parameters estimated using length-at-age data from both methods confirming the age determination results. Growth performance index indicated high similarity between the two estimates. The results revealed the compatibility of length frequency distribution to scale reading for...
Tipo: Journal Contribution
Palavras-chave: Growth; Scale reading; Stock assessment; Length; Growth; Length; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_4260.
Ano: 2005
URL: http://hdl.handle.net/1834/1221

Preliminary studies of age and growth of bigeye tuna (Thunnus obesus) in the western Indian Ocean.
Provedor de dados: 20
Autores: Stequert, B.; Conand, F.
The age and growth of Bigeye tuna from the western Indian Ocean was investigated using both otolith and first dorsal spine. Microincrements, considered as daily depositions , were observed on transverse section of sagittal otoliths of 154 bigeye tuna (Thunnus obesus); they were counted to determine age and establish growth curve. The von Bertalanffy growth curve is FL = 303.9 (1 – e-0.000397 ( t+167.15)), where FL is fork length in cm and t in days. The fish reaches 58 cm at 1 year, 91 cm at 2 years and 120 cm at 3 years of age. We also studied growth by analysing marks on the first dorsal spine of 140 fish. For fish which are 1 and 2 years old, the results obtained with spine and otoliths are comparable, but they are different for older fish . 'Research...
Tipo: Proceedings Paper
Palavras-chave: Age Growth rate Fishery biology Otolith ISW; Indian Ocean.
Ano: 1998
URL: http://hdl.handle.net/1834/71

Growth in the 0-group of Argentine hake (Merluccius hubbsi) from the Argentine-Uruguayan Common Fishing Zone
Provedor de dados: 20
Autores: Santos, B.A.; Renzi, M.A.
Growth of hake (Merluccius hubbsi) in the 0-group from the Argentine-Uruguayan Common Fishing Zone was studied and spawning data were back-calculated by identifying daily growth rings in otoliths of specimens caught during research cruises performed in May 1997, May 1998 and June 1999. Total length (TL) range was 14-69 mm. Increments were read under microscope using an otolith daily ring measurement system (RATOC). Changes in the increment width data present a pattern that seemed to be similar, and independent from birth date of individuals. Data observed and back-calculated showed good accordance with the Laird-Gompertz model. Significant differences between coefficients were found in all comparisons of growth curves for observed and retrocalculated data....
Tipo: Journal Contribution
Palavras-chave: Growth curves; Fish larvae; Juveniles; Otolith reading; Fish larvae; Juveniles; Http://aims.fao.org/aos/agrovoc/c_2924; Http://aims.fao.org/aos/agrovoc/c_25393.
Ano: 2006
URL: http://hdl.handle.net/1834/2515

Crecimiento del abanico de mar Gorgonia ventalina (Linnaeus, 1758) (Cnidaria: Gorgoniidae) en el área de Santa Marta, Caribe colombiano
Provedor de dados: 20
Autores: Manrique Rodríguez, N.; Bejarano Chavarro, S.; Garzón Ferreira, J.
As a contribution to the biological knowledge about the sea fan Gorgonia ventalina and the use of this information as a tool to generate conservation and management strategies for this threatened species, a study about its annual growth rate, in different reef areas in Santa Marta and the National Natural Park Tayrona in the Colombian Caribbean took place. Manual measurements of 35 colonies were analyzed and images of 11 colonies were recorded in the beginning and in the end of the field stage. The annual growth rate varies among colonies and areas where measurements were taken. The average annual growth rate obtained with both of the methods was high and oscillated between 7.6 and 8.1 cm/year in height and between 6.9 and 8.3 cm/year wide. The total area...
Tipo: Journal Contribution
Palavras-chave: Growth; Population characteristics; Population structure; Growth; Population structure; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_6115.
Ano: 2006
URL: http://hdl.handle.net/1834/1981

Estimación de la edad y el crecimiento de la merluza austral Merluccius australis (Hutton, 1872) del Mar Argentino
Provedor de dados: 20
Autores: Gorini, F.L.; Abachian, V.E.; Giussi, A.R.
Southern hake (Merluccius australis) age and growth were estimated using sagittae otoliths obtained in research cruises and observers programs in the Argentine Sea (SW Atlantic). The only annual growth ring observed, formed by two bands, one hyaline and another opaque, corresponded to winter and summer growth, respectively. According to the analysis of otoliths edge, birthday was established on 1st July. Within the age range observed, that comprised 3-18 year old specimens, age groups 7, 8 and 9 were the most frequently identified in both sexes. Growth parameters estimates showed significant differences between them.
Tipo: Journal Contribution
Palavras-chave: Age determination Age groups Growth rings Otoliths Merluccius australis Atlántico Sudoccidental; Argentina marine environment.
Ano: 2010
URL: http://hdl.handle.net/1834/4223

Estudios sobre la edad y crecimiento de la Palma Calamus brachysomus (Lockington) (Pisces: Sparidae) en aguas ecuatorianas
Provedor de dados: 20
Autores: Martínez, J.
342 specimens of sparid Calamus brachysomus ”Palma”, collected during a demersal trawl survey by the R. V. Tohallí in April and May1983, were examined. The different techniques used to prepare scales and otoliths for ageing are described and analysed. The otoliths were determined to be the most reliable for ageing studies; 87% of otoliths were readable. The rings observed were assumed to be annual. The mean lengths at age were used to determine the parameters of the Von Bertalanffy growth formula, giving: Lt=50.13(1-e-0.1473(t+2.0704)). The growth curve obtained must be considered provisional due to possible biases in the interpretation of the otoliths, and also due to those arising from the selectivity of the fishing gear.
Tipo: Journal Contribution
Palavras-chave: Demersal fisheries; Age; Growth; Growth curves; Otoliths; Otolith reading; Demersal fisheries; Growth; Otoliths; Age; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_27091; Http://aims.fao.org/aos/agrovoc/c_186.
Ano: 1985
URL: http://hdl.handle.net/1834/3226

Crop growth effects of processed raw materials applied as fertilisers or growth stimulators – a summary of partial EU project results
Provedor de dados: 21
Autores: Zurawicz, Edward; Stutterheim, Nicolas; Bruns, Christian; Sas-Paszt, Lidia.
In an EU CRAFT project (COOP-CT-2004-508458) running from March 2004 to March 2006, an international consortium of producers of environmen-tally benign crop inputs (BFPs: Biological Food for Plants), RTD performers and end users, evaluated the production and use of BFPs manufactured from differ-ent raw materials: bovine hides, trees, and herba-ceous species. At the manufacturing level, production methods and procedures were reviewed to establish possible relationships between processing steps and end-product quality. At the field level, the BFP prod-ucts were applied as solid pellets or liquids, as fertil-isers or sprays, respectively, on organically grown potatoes and tomatoes and conventionally grown watermelon, cauliflower, strawberries, black currant,...
Tipo: Conference paper, poster, etc.
Palavras-chave: Fruit and berries.
Ano: 2006
URL: http://orgprints.org/7388/1/Public%2DDenmark.pdf

Values Based Supply Chains for Mountain Products. The Example of BioAlpin in Tyrol/Austria
Provedor de dados: 21
Autores: Schermer, Markus.
Values based Supply chains for Mountain Products: the example of BioAlpin in Tyrol/Austria     Growth processes are often problematic for small-scale farms as they may disturb the delicate balance of basic internal resources, like labor, buildings, machinery, land and animals. Most of these resources cannot be increased in linear processes and the smaller the unit the more problematic the task of realignment of resources becomes. Small-scale farmers often feel growth as enforced by outside factors, e.g. a market partner. Growing enterprises in processing and trading need more supply and obviously are not eager to deal with more small suppliers, as this tends to mean higher transaction costs and varying qualities. However, we find examples where dedicated...
Tipo: Conference paper, poster, etc.
Palavras-chave: Community development; Social aspects; Markets and trade; Produce chain management.
Ano: 2015
URL: http://orgprints.org/30688/1/VBSC-mountain.docx

Growth and chemical composition of chicory and performance of lambs grazing chicory relative to grass–clover mixtures
Provedor de dados: 21
Autores: Kidane, Alemayehu; Sørheim, Kristin; Eik, Lars Olav; Steinshamn, Håvard.
We report results from trials on chicory growth (experiment 1) and lamb growth on chicory (experiment 2). In experiment  1, we assessed yield and chemical composition on swards established under organic conditions as perennial ryegrass/red  clover, perennial ryegrass/chicory, chicory/red clover (CHRC), pure perennial ryegrass (RG-alone) and pure chicory (CHalone)  over two years. Chicory/red clover and CH-alone showed improved crude protein, Ca, Mg, P, Cu and net energy  contents compared to other mixtures. However, dry matter yield was the lowest for CHRC and CH-alone compared to  others. In experiment 2, 48 weaned lambs grazed swards sown as chicory alone (CHA), chicory–grass–clover mix (CGC) or  grass–clover mix (GCM) for 45 days. Lamb body weight (BW)...
Tipo: Journal paper
Palavras-chave: Pasture and forage crops; Sheep and goats.
Ano: 2014
URL: http://orgprints.org/29290/1/Kidane%20et%20al%202014%20Chicory%20growth%20and%20lamb%20performance.pdf

The influence of post-emergence weed harrowing on selectivity, crop recovery and crop yield in different growth stages of winter wheat
Provedor de dados: 21
Autores: Rueda–Ayala , Victor; Rasmussen, Jesper; Gerhards , Roland; Fournaise , N.A.
Crop tolerance and weed control in winter wheat were investigated to evaluate the influence of post-emergence weed harrowing at different crop growth stages on selectivity, crop recovery and crop yield. The importance  of growth stage was investigated in autumn (Denmark) and spring (Germany). Selectivity was chosen as a measure of the relationship between weed control and crop soil cover, with crop recovery as a measure of how crop yield was affected by soil cover in the absence of weeds. Selectivity was unaffected by crop growth stage in autumn and spring. In autumn, 80% weed control was associated with 6% crop soil cover, whereas in spring, 80% weed control corresponded to 26% crop soil cover. Crop recovery was higher in late growth stages in autumn and...
Tipo: Journal paper
Palavras-chave: Weed management.
Ano: 2011
URL: http://orgprints.org/20110/4/20110.pdf

Growth performance of broilers fed with different strains of probiotics
Provedor de dados: 21
Autores: Tarun, Dr. Mercedes.
Generally, this study aimed to determine the effects of different strains of probiotics on the growth performance of broilers. Specifically, to determine the effects of feeding different strains of probiotics on the growth performance of broiler and utilizing broiler chicks, An all mash ration with 21% CP was formulated. Completely Randomized Design (CRD) was used and Least Significant Differences (LSD) when comparing treatments; T1-Control (0 Probiotics), T2- 2 kg Lactobacillus sp./MT of feeds, T3- 2 kg Bacillus sp./MT of feeds, and T4-2 kg Pediococcus sp./MT of feeds. Statistical analysis revealed highly significant differences among treatments on the final body weight of broilers given diets with different strains of probiotics. Based from the result of...
Tipo: Conference paper, poster, etc.
Palavras-chave: Poultry; Feeding and growth.
Ano: 2008
URL: http://orgprints.org/11625/1/Tarun_11625_ed.doc

Effects of inter-row hoeing and fertilizer placement on weed growth and yield of winter wheat
Provedor de dados: 21
Autores: Melander, Bo; Cirujeda, Alicia; Jørgensen, Martin Heide.
Inter-row hoeing is known to control tap-rooted and erect weed species more effectively in winter wheat than weed harrowing. However, little is known about its effectiveness for use in the spring in winter wheat grown at wide row spacing (240 mm) under the influence of different placement of fertiliser. Two field experiments, one in 1999 and one in 2000, were conducted to study the influence of fertiliser placement, timing of inter-row hoeing, and driving speed on the weeding effect on different weed species and crop growth. Placement of fertiliser below the soil surface improved crop growth and grain yield in both years compared with placement on the surface, but weeds surviving hoeing were not more suppressed by the improved crop growth. Timing was not...
Tipo: Journal paper
Palavras-chave: Weed management.
Ano: 2003
URL: http://orgprints.org/2144/1/HOEING_WR.pdf

Effects of selected pesticides and adjuvants on germination and vegetative growth of Phomopsis amaranthicola, a biocontrol agent for Amaranthus spp.
Provedor de dados: 21
Autores: Wyss, G.S.; Charudattan, R.; Rosskopf, E.; Littell, R.
Summary:  Phomopsis amaranthicola, a bioherbicide agent for Amaranthus spp., was tested in vitro for its compatibility with commercial formulations of 16 adjuvants, 24 herbicides, nine fungicides and four insecticides at 2X, 1X (highest labelled product dose rate), 0.75X, 0.5X and 0.25X concentrations. These chemicals were tested for their effects on spore germination. Selected herbicides and fungicides at 1X were also tested for their influence on colony growth and sporulation. All tested compounds were finally categorized in compatibility classes regarding germination, mycelial growth and sporulation such as low, medium and high compatibility. High compatibility in terms of germination and fungal colony growth was only observed with the herbicide...
Tipo: Journal paper
Palavras-chave: Food security; Food quality and human health.
Ano: 2004
URL: http://orgprints.org/5924/1/Wyss-2004-Effects.pdf

Software for interpolation of vegetative growth of yerba mate plants in 3D
Provedor de dados: 86
Autores: Silva,Murilo Hilário Mazza da; Rakocevic,Miroslava.
The objective of this work was to build mock-ups of complete yerba mate plants in several stages of development, using the InterpolMate software, and to compute photosynthesis on the interpolated structure. The mock-ups of yerba-mate were first built in the VPlants software for three growth stages. Male and female plants grown in two contrasting environments (monoculture and forest understory) were considered. To model the dynamic 3D architecture of yerba-mate plants during the biennial growth interval between two subsequent prunings, data sets of branch development collected in 38 dates were used. The estimated values obtained from the mock-ups, including leaf photosynthesis and sexual dimorphism, are very close to those observed in the field. However,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ilex paraguariensis; AMAPmod; Modeling; Plant architecture; Plant growth; 3D reconstruction.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010000300003

Cucumber seedling dependence on cotyledonary leaves for early growth
Provedor de dados: 86
Autores: Bisognin,Dilson Antônio; Velasquez,Luis; Widders,Irvin.
The objective of this work was to evaluate the dependence of cucumber (Cucumis sativus L.) seedlings on cotyledonary leaves for early growth and establishment. Sets of two uniform emerging seedlings were used to quantify the initial growth and dry matter accumulation, as well as the intensity and stage of cotyledon damage in seedling establishment and to determine cotyledon protein, amino acid and carbohydrate contributions to the growing seedling. Cucumber seedling establishment was found to be highly dependent on cotyledonary leaves. Root system establishment was highly dependent on the health of the aerial part. One cotyledon was enough to maintain aerial growth of seedlings after unfolding the first true leaf. Cucumber seedlings depended on both...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucumis sativus; Cotyledon excision; Cotyledon coverage; Dry matter; Leaf area.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2005000600002

Analysis of variance of primary data on plant growth analysis
Provedor de dados: 86
Autores: Araújo,Adelson Paulo.
Plant growth analysis presents difficulties related to statistical comparison of growth rates, and the analysis of variance of primary data could guide the interpretation of results. The objective of this work was to evaluate the analysis of variance of data from distinct harvests of an experiment, focusing especially on the homogeneity of variances and the choice of an adequate ANOVA model. Data from five experiments covering different crops and growth conditions were used. From the total number of variables, 19% were originally homoscedastic, 60% became homoscedastic after logarithmic transformation, and 21% remained heteroscedastic after transformation. Data transformation did not affect the F test in one experiment, whereas in the other experiments...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ANOVA model; Statistic; Phosphorus; Common bean; Rice.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2003000100001

Growth of clonal modules on Agropyron michnoi in the Songnen Plain of Northeast China
Provedor de dados: 85
Autores: Zhang,J; Zhou,C; Yang,YF.
Spatial expansion of clonal plants and growth of their modules are of concern in the field of plant ecology. After measuring a large number of samples, we analyzed the module components and the growth patterns of vegetatively propagated Agropyron michnoi clones in the Songnen Plain on Northeast China. The results showed that the plasticity of clonal growth was large; the coefficients of variation of both extensive areas and the quantitative characters of modules were more than 20%. The numbers of ramets, seedlings, and buds and the cumulative length of the rhizomes showed exponentially and linearly increasing patterns with increases of the area and the total number of modules. The biomass of each module, total number of modules and total biomass showed an...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agropyron michnoi; Clonal growth; Vegetative propagation; Number of modules; Biomass.
Ano: 2015
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572015000200021

Eucalypt Growth Submitted to Management of Urochloa spp.
Provedor de dados: 87
Autores: FERREIRA,G.L.; SARAIVA,D.T.; QUEIROZ,G.P.; SILVA,D.V.; PEREIRA,G.A.M.; FERREIRA,L.R.; OLIVEIRA NETO,S.N.; MATTIELLO,E.M.
The objective of this work was to evaluate the initial growth and the physiological characteristics of eucalypt submitted to different managements of signalgrass. The experiment was conducted in a protected environment, using a randomized blocks design with five repetitions. The treatments were arranged in a (5 x 2) + 1 factorial design, and the first factor corresponded to the types of weed management (no control; chemical control keeping the signalgrass shoot on the soil; chemical control with removal of the signalgrass shoot; mechanical control keeping the signalgrass shoot on the soil, and mechanical control with removal of the signalgrass shoot); the second factor corresponded to the two weeds species (U. brizantha and U. decumbens) and a control...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Control methods; Physiological variables; Initial growth; Urochloa (syn. Brachiaria); Eucalypt.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000100099

Growth of Tree Species in Coexistence with Palisade Grass Urochloa brizantha (Hochst. ex A. Rich.) Stapf CV. Marandu
Provedor de dados: 87
Autores: SANTOS,T.A.; RESENDE,A.S.; SILVA,F.F.; MORAES,L.F.D.; CHAER,G.M.
ABSTRACT: The effect of palisade grass (Urochloa brizantha) was evaluated on the growth of five tree species from the Atlantic Forest biome in Seropédica, RJ, Brasil. This study consisted of five experiments in a completely randomized design. The effect of grass on the growth of Cedrela fissilis, Guazuma ulmifolia, Schinus terebinthifolius, Sapindus saponaria, and Hymenaea courbaril was tested in pots at each experiment. Height, collar diameter, and plant mortality were measured monthly. Shoot and root dry matter of tree species and grass were evaluated at 180 days. A strong interference of palisade grass was observed on the growth of the five studied species. The reduction of growth in height and collar diameter reached 32 and 29% in S. saponaria and 26...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Weed competition; Cedrela fissilis; Guazuma ulmifolia; Schinus terebinthifolius; Sapindus saponaria; Hymenaea courbaril.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100191

DIMENSIONS OF CONFLICT AND THE ROLE OF FOREIGN AID IN FIJI
Provedor de dados: 31
Autores: Gounder,   Rukmani.
As diversity is the strength for economic growth quality domestic institutions and good governance are some of the essential factors to achieve sustainable growth and maintain social stability and harmony. Therefore, necessary social, economic, political and institutional dynamics contribute to higher growth prospects and mitigate conflict in a multi-cultural society. Since the 1987 military coups some of the issues that have confronted the people of Fiji, and others, co-integrate with ethnicity, political instability, conflict and governance. This article links these issues and evaluates the characteristics and factors associated with the dimensions of conflict. In particular, the study highlights the nature and impact of conflict on the civil society and...
Tipo: Working or Discussion Paper
Palavras-chave: Conflict; Aid; Donor Approaches; Fiji; International Development.
Ano: 2005
URL: http://purl.umn.edu/23699

Determinants of productivity change of crop and dairy farms in Germany, the Netherlands and Sweden in 1995-2004
Provedor de dados: 31
Autores: Zhu,   Xueqin; Oude Lansink,   Alfons G.J.M.
IAAE Beijing conference 2009
Tipo: Conference Paper or Presentation
Palavras-chave: Productivity; Decomposition of TFP; Stochastic frontier models; Crop farms; Dairy farms; Agricultural and Food Policy; Crop Production/Industries; Livestock Production/Industries; Productivity Analysis.
Ano: 2009
URL: http://purl.umn.edu/51648

Scarcity and Growth in the New Millennium: Summary
Provedor de dados: 31
Autores: Simpson,   R. David; Toman,   Michael; Ayres,   Robert U.
In their 1963 classic Scarcity and Growth Howard Barnett and Chandler Morse argued that resource scarcity did not threaten economic growth. A second investigation in the late 1970s, Scarcity and Growth Reconsidered, reached largely the same conclusion. The 25 years since that work was published have witnessed many developments. The message of Scarcity and Growth that depletion of market resources was not a problem has given way to a concern that "new scarcities" of environmental quality, global climate, and biological diversity are emerging. Resources for the Future recently assembled a distinguished group of international scholars to again address scarcity and growth. This paper describes their charge and summarizes their findings. Technological progress...
Tipo: Working or Discussion Paper
Palavras-chave: History of economic thought; Technological change; Renewable resources and economy; Research and Development/Tech Change/Emerging Technologies; B12; B20; N50; O13; O14; O33; O47; Q20; Q32.
Ano: 2004
URL: http://purl.umn.edu/10835

Returns to Investment in Agriculture
Provedor de dados: 31
Autores: Haggblade,   Steven.
Investment in agriculture is necessary for ensuring rapid economic growth and poverty reduction in Zambia, as elsewhere in Africa. Yet many of the key investments required to accelerate agricultural growth – technological research, rural infrastructure and market standards, organization and enforcement -- are public goods. Because the private sector cannot capture gains from these investments, they will not invest in amounts sufficient to ensure broad-based agricultural growth. Therefore, the public sector needs to provide the necessary research, transport and market infrastructure necessary to stimulate agricultural growth. Zambia currently allocates 6% of government outlays for agriculture. This is less that the 10% commitment Zambia has made under the...
Tipo: Report
Palavras-chave: Food security; Food policy; Zambia; Agriculture growth; Public investment; Research and Development/Tech Change/Emerging Technologies; Q19.
Ano: 2007
URL: http://purl.umn.edu/54625

Spatial Labor Markets and Technology Spillovers – Analysis from the US Midwest
Provedor de dados: 31
Autores: Miranowski,   John A.; Monchuk,   Daniel C.
The primary focus of this paper is the impact of knowledge creation and innovative activity on non-farm employment growth. Non-farm employment growth is modeled in a stylized model where new knowledge and local economic externalities are key factors driving technology growth. For our empirical application we assume that new knowledge and innovative activity are embodied in new patent filings within the county. To explicitly capture spillovers between counties we apply spatial econometric techniques. The econometric model, based on a 2-stage spatial econometric estimation procedure, is tested for all counties in US Midwestern States of Iowa, Minnesota, Missouri, Kansas, Nebraska, South Dakota and North Dakota. The results indicate the positive influence of...
Tipo: Working or Discussion Paper
Palavras-chave: Labor and Human Capital; Research and Development/Tech Change/Emerging Technologies.
Ano: 2004
URL: http://purl.umn.edu/18224

INCOME DIVERSIFICATION AND POVERTY REDUCTION IN THE NORTHERN UPLANDS OF VIETNAM
Provedor de dados: 31
Autores: Minot,   Nicholas.
In the context of the economic development, income diversification is sometimes defined as the process by which households switch from growing low-value staple food crops to growing a mix of food crops and higher-value commercial crops (crop diversification) and from farming to non-farm activities (non-farm diversification).  The literature on income diversification has measured trends, identified determinants, and speculated on the constraints to diversification, but there has been relatively little analysis of the contribution of diversification to income growth.  This paper uses household survey data from 1993 and 1998 to quantify the contribution of crop diversification and non-farm diversification to the growth of household income in the northern...
Tipo: Conference Paper or Presentation
Palavras-chave: Food Security and Poverty.
Ano: 2003
URL: http://purl.umn.edu/22029

RURAL AMERICA AT A GLANCE 2006 Edition
Provedor de dados: 31
Autores: Kusmin,   Lorin D.
From 2000 to 2005, the nonmetro population in the United States grew by 2.2 percent. International migration supplied nearly a third of the growth in nonmetro areas, and accounted for all nonmetro population growth in the Midwest. Growth was concentrated in nonmetro counties adjacent to metro areas. (Data on nonmetro areas are used in this report to describe rural and small-town America. The definitions of metro and nonmetro areas are discussed in the section on data sources at the end of this report.) The nonmetro population is aging, like the U.S. population as a whole, with implications for health care, housing, and transportation. Between 2000 and 2005, the nonmetro population 40-59 years old grew by 8 percent, while the nonmetro population under 20...
Tipo: Working or Discussion Paper
Palavras-chave: Community/Rural/Urban Development.
Ano: 2006
URL: http://purl.umn.edu/33887

Has Green Revolution Bypassed Coarse Cereals? The Indian Experience
Provedor de dados: 31
Autores: Janaiah,   Aldas; Achoth,   Lalith; Bantilan,   Ma Cynthia S.
This paper analysed the growth performance of non-rice crop sectors by estimating total factor productivity (TFP) growth for the selected coarse cereals viz., maize, sorghum and pearl millet in India. The analysis indicates that the TFP growth contributed substantially to the output growth of coarse cereals over the past three decades. The TFP growth was higher in those states where coverage of irrigation was relatively high. TFP grew at an average of 1.4 percent per annum through out the Green Revolution (GR) period for sorghum in the sate of Maharashtra where about half of the India’s sorghum area is concentrated mostly under rainfed conditions. Although small in absolute terms over the past three decades, the overall findings suggest that GR...
Tipo: Journal Article
Palavras-chave: Total factor productivity; Coarse cereals; Green revolution; Adoption rate; India; International Development.
Ano: 2005
URL: http://purl.umn.edu/110142

Empirical Analysis of Agricultural Growth and Unemployment in Nigeria
Provedor de dados: 31
Autores: Ayinde,   Opeyemi Eyitayo; Ayinde,   Kayode; Memudu,   I. J. B.; Ojehomon,   V.I.
Unemployment which has been identified as the major cause of poverty is a worldwide economic problem. Poverty alleviation has been a great concern to developing countries. The economic burden of unemployment on a society necessitates this study. Consequently, this study analyses the Nigerian agricultural growth rate, its contributions, and examines the linkage and dimension of agricultural growth and unemployment rates. Collected time series data were analyzed with the aid of t – test, Duncan Multiple Range test, Granger Causality test and regression analysis.   Results showed that Nigerian agricultural growth rate has an inverse relationship with unemployment and re – establish the Cobweb supply theory. In addition, increase in agricultural growth...
Tipo: Conference Paper or Presentation
Palavras-chave: Cobweb supply theory; Granger Causality test; Nigeria; Unemployment; Agricultural and Food Policy; Community/Rural/Urban Development; Environmental Economics and Policy; Farm Management; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; International Relations/Trade; Marketing; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2008
URL: http://purl.umn.edu/52147

Agricultural Growth and Economic Development: A View through the Globalization Lens
Provedor de dados: 31
Autores: Pingali,   Prabhu L.
This paper re-visits the age old proposition that agriculture growth contributes to overall economic development, and asks whether the relationship still holds in an increasingly globalized world. There is overwhelming empirical support for the above proposition, indeed, it is hard to find exceptions, barring a few city states, where sustained economic development has not been preceded by robust agricultural growth. However, there are a large number of countries that have witnessed neither agricultural growth nor economic development. Even in countries where agricultural growth has been significant, dramatic inter-regional differences persist. This paper examines the factors that contribute to or constrain the process of agricultural transformation. Does...
Tipo: Conference Paper or Presentation
Palavras-chave: International Development.
Ano: 2006
URL: http://purl.umn.edu/25429

Strategic Interaction and Spatial Multiplier Effects in Local Growth Control Policies: The California Housing Market
Provedor de dados: 31
Autores: Waldorf,   Brigitte S.; Byun,   Pillsung; Florax,   Raymond J.G.M.
Since the 1970s, growth controls spread across many metropolitan regions in the United States. Several studies address the effects of local growth controls on housing markets, particularly its price effect, which is induced by rising construction cost, constrained housing supply, improved amenities, and market reorientation of homebuilders. However, only few studies explicitly address inter-jurisdictional spatial spillovers and strategic interaction of policy-makers of different jurisdictions in the design of growth control policies. This study focuses on two housing market outcomes, supply of new housing and market orientation, and utilizes a spatial econometric framework to systematically investigate local and global spatial spillovers giving rise to...
Tipo: Conference Paper or Presentation
Palavras-chave: Spatial spillovers; Growth controls; Housing supply; Market orientation; Public Economics; C21; H23; H73; R31.
Ano: 2005
URL: http://purl.umn.edu/19574

Aggregate and Farm-level Productivity Growth in Tobacco: Before and After the Quota Buyout
Provedor de dados: 31
Autores: Kirwan,   Barrett E.; White,   T. Kirk; Uchida,   Shinsuke.
We examine the distortionary effects of agricultural policy on farm productivity by examining the response of U.S. tobacco farmers' productivity to the quota buyout of 2004. We isolate the impact of distortionary policy, i.e., the tobacco quota, by decomposing aggregate productivity growth into the contribution of farm-level productivity growth and the contribution of reallocation of resources among tobacco growers. Reallocation of resources includes entry into and exit from tobacco farming, as well as growth or decline of the resources allocated to existing tobacco farms. We find that aggregate productivity of Kentucky tobacco farms grew 37% between 2002 and 2007.  Reallocation of resources among continuing tobacco farms contributed 22 percentage points...
Tipo: Conference Paper or Presentation
Palavras-chave: Tobacco; Quotas; Aggregate Productivity Growth; Re-allocation; Crop Production/Industries; Productivity Analysis; E32; L6; O47.
Ano: 2010
URL: http://purl.umn.edu/56353

Creating the Conditions for International Business Expansion: The Impact of Regulation on Economic Growth in Developing Countries - A Cross-Country Analysis
Provedor de dados: 31
Autores: Jililian,   Hossein; Kirkpatrick,   Colin; Parker,   David.
The role of an effective regulatory regime in promoting economic growth and development and therefore international business has generated considerable interest among researchers and practitioners in recent years. In particular, building effective regulatory structures in developing countries is not simply an issue of the technical design of the most appropriate regulatory instruments, it is also concerned with the quality of supporting regulatory institutions and capacity. Many of the institutions that support markets are publicly provided and the effectiveness of these regulatory institutions can be expected to be an important determinant of how well markets function. This paper explores the role of regulation in affecting economic outcomes using an...
Tipo: Working or Discussion Paper
Palavras-chave: Economic growth; Regulation; Governance; Institutions; Economic performance; International Development; C23; I18; L33; L51; L98; O38; O50.
Ano: 2003
URL: http://purl.umn.edu/30554

The Impact of Agricultural Growth on Rural Non-Farm Incomes and Employment in Alabama
Provedor de dados: 31
Autores: Brazil,   LaTravis; Bukenya,   James O.
The rural nonfarm economy is the backbone of the economy of numerous small towns scattered throughout the Black Belt region, as well as the primary source of income and employment. Seen in this light, the rural nonfarm economy will play a key role in determining future prospects for employment growth and poverty alleviation in the Alabama Black Belt region. The objective in this paper therefore is to examine the importance of rural-urban growth linkages with a focus on the Black Belt region and estimate agricultural growth multipliers. The analysis uses cross-section data to estimate econometrically the indirect rural employment and income generated by agricultural growth. Two major sections address the study objective. The first examines the importance,...
Tipo: Conference Paper or Presentation
Palavras-chave: Rural-Urban Linkages; Counties; Multipliers; Employment; Agribusiness; Labor and Human Capital; Research Methods/ Statistical Methods.
Ano: 2010
URL: http://purl.umn.edu/56482

Has trade liberalization in South Africa affected men and women differently?
Provedor de dados: 31
Autores: Thurlow,   James.
Trade liberalization is a central part of South Africa’s post-Apartheid development strategy. However, despite considerable reforms, the country has failed to generate pro-poor growth, with both unemployment and inequality worsening over the last ten years. This has raised concern that trade liberalization may have worked against the country’s development objectives. This study uses a dynamic general equilibrium and microsimulation model to assess the effects of trade liberalization on growth, employment and poverty in South Africa. More specifically, it examines how men and women have been affected differently and whether liberalization has contributed to the faster rise in female unemployment and poverty. The results suggest that trade policies have not...
Tipo: Report
Palavras-chave: International Relations/Trade.
Ano: 2006
URL: http://purl.umn.edu/55397

TECHNOLOGICAL LEADERSHIP, HUMAN CAPITAL AND ECONOMIC GROWTH: A SPATIAL ECONOMETRIC ANALYSIS FOR U.S. COUNTIES, 1969-2003*
Provedor de dados: 31
Autores: Pede,   Valerien O.; Florax,   Raymond J.G.M.; de Groot,   Henri L.F.
The traditional view of cities as monocentric conglomerates of people clustered around an employment center, driving economic growth in cities that subsequently trickles down to the hinterland, is increasingly being challenged. In particular, the role of space, technological leadership, human capital, increasing returns to scale and industrial clustering as well as hierarchical organization principles have been emphasized in the more recent literature. This paper utilizes exploratory and spatial econometric data analysis techniques to investigate these issues for U.S. counties using data from 1969 through 2003. Ultimately, contiguous and hierarchical organization and interaction patterns are captured using an endogenous growth model allowing for spatial...
Tipo: Working or Discussion Paper
Palavras-chave: Community/Rural/Urban Development.
Ano: 2006
URL: http://purl.umn.edu/28630

THE RELATIONSHIPS OF TRADE, ECONOMIC GROWTH, AND MARKET POWER: THE CASE OF RICE EXPORTING
Provedor de dados: 31
Autores: Kang,   Hyunsoo; Kennedy,   P. Lynn; Hilbun,   Brian M.
This paper aims to (1) analyze the relationship between rice exports and economic growth for the world’s top four exporting countries (Thailand, Vietnam, India, and the U.S) and (2) seek to determine to what extent market power affects a country’s economic growth. The main objective of this paper is to determine to what extent economic growth impacts a country’s rice exports as well as to what extent Foreign Direct Investment (FDI) impacts a country’s ability to export rice. This analysis also examines the impact of market power on economic growth. On the basis of these results, we examine the existence of market power in the international rice market with respect to rice supply, and moreover, propose that there is a bi-directional causality between the...
Tipo: Conference Paper or Presentation
Palavras-chave: Rice export; CR4; GDP; FDI; Market power; Trade; Export supply function; Community/Rural/Urban Development; International Relations/Trade.
Ano: 2008
URL: http://purl.umn.edu/46081

Réflexion sur les orientations stratégiques pour un développement économique durable au Mali
Provedor de dados: 31
Autores: Dembele,   Niama Nango.
Mali has a challenge of putting in motion a long term process of economic growth linked with social safety nets. Only a strategy focusing on the generation, transfer, and investment of an agricultural surplus is capable of implementing this process. However, the use of productivity gains of the agro-food sector as engine for economic growth is only possible when solid links are established between the rural sector and the rest of the economy through the development of markets and infrastructure for transport, communication, and energy to attract and invest a part of these productivity gains into the other sectors of the economy. That is why the proposed strategy of economic development in this memo has three components: the growth of the agricultural...
Tipo: Working or Discussion Paper
Palavras-chave: Food security; Food policy; Mali; International Development; Q18.
Ano: 2002
URL: http://purl.umn.edu/55456

Consumption Growth in a Booming Economy: Taiwan 1976-96
Provedor de dados: 31
Autores: McKenzie,   David.
Consumption and income have both grown rapidly in Taiwan over the past forty years, with younger birth cohorts experiencing faster growth. The long upward trend in consumption presents a strong challenge to the consumption smoothing predictions of the Permanent Income Hypothesis. We investigate the extent to which consumption theory can account for this trend in an environment where a large majority of households have high savings rates. Household survey data from 1976-96 are used to estimate dynamic pseudo-panel models with inter-cohort heterogeneity. We evaluate the impacts on consumption of migration, mortality, household composition, liquidity constraints, unanticipated aggregate shocks, hyperbolic discounting, habit formation and precautionary saving....
Tipo: Working or Discussion Paper
Palavras-chave: Consumption growth; Pseudo-panel; Prudence; Taiwan; International Development; O12; O16; E21; C23.
Ano: 2001
URL: http://purl.umn.edu/28398

Will Bangladesh's Economic Growth Solve its Environmental Problems?
Provedor de dados: 31
Autores: Tisdell,   Clement A.
Bangladesh has experienced rising GDP and rising per capita incomes now for at least three decades. This article considers whether its continuing economic growth is likely to solve its environmental problems. In doing so, it critically considers the application to Bangladesh of Environmental Kuznets Curve relationships and applies other macro-methods of assessing the relationship between economic growth and the environment to Bangladesh’s situation. The consequences of Bangladesh’s economic reforms for the economic welfare of Bangladeshis and the state of Bangladesh’s environment are also examined. Particular attention is given to environmental change in agriculture in the light of Bangladesh’ economic growth, reforms and proposed growth strategy. Doubts...
Tipo: Working or Discussion Paper
Palavras-chave: Bangladesh; Economic Growth; Environmental Sustainability; Community/Rural/Urban Development; Environmental Economics and Policy.
Ano: 2002
URL: http://purl.umn.edu/48740

The Fight Against Geography: Malaria and Economic Development in Italian Regions
Provedor de dados: 31
Autores: Percoco,   Marco.
Geography has long been considered as a fundamental prerequisite for economic development and growth. In recent years, a growing number of papers have considered the role of physical geography as a determinant of regional growth and development by considering it as a source of “intrinsic advantage”. Malaria is considered to be strictly related to poverty and its geographically-related origin is now widely recognized, i.e. it is endemic only in certain areas of the globe whose environmental and climatic characteristics are ideal for the proliferation of mosquitoes which are the vector for the transmission of the disease. The World Health Organization is currently setting a series of policies aiming to eradicate the disease from Africa, with the specific...
Tipo: Working or Discussion Paper
Palavras-chave: Geography; Regional Growth; Malaria; Political Economy; J100; N300; O100; R100.
Ano: 2011
URL: http://purl.umn.edu/99684

Governmental Learning as a Determinant of Economic Growth
Provedor de dados: 31
Autores: Grusevaja,   Marina.
Systemic economic transition is a process of determined radical institutional change, a process of building new institutions required by a market economy. Nowadays, the experience of transition countries with the implementation of new institutions could be reviewed as a method of economic development that despite similar singular steps has different effects on the domestic economic performance. The process of institutional change towards a market economy is determined by political will, thus the government plays an important role in carrying out the economic reforms. Among the variety of outcomes and effects the attention is drawn especially to economic growth that diverges significantly in different post-transition countries. The paper attempts to shed...
Tipo: Conference Paper or Presentation
Palavras-chave: Institutional change; Governmental learning; Economic growth; Agribusiness; B52; D80; O43.
Ano: 2011
URL: http://purl.umn.edu/115364

Factors Driving the Growth in Fertilizer Consumption in Kenya, 1990-2005: Sustaining the Momentum in Kenya and Lessons for Broader Replicability in Sub-Saharan Africa
Provedor de dados: 31
Autores: Ariga,   Joshua; Jayne,   Thomas S.; Nyoro,   James K.
The objective of this study is to identify the factors responsible for the impressive growth in fertilizer use in Kenya since market liberalization in the early 1990s. Over the past 10 years, fertilizer consumption has risen by 35%. So far, it is unknown whether smallholder farmers are responsible for this growth or whether it is being driven mainly by the large-scale and/or estate sectors. Moreover, it is important for policy makers to know whether the increased fertilizer consumption is being devoted to smallholder food crops or whether industrial crops such as tea and sugarcane are responsible for this growth. This study addresses these questions using nationwide survey data on smallholder fertilizer use patterns between 1996 and 2004. The study also...
Tipo: Working or Discussion Paper
Palavras-chave: Food Security; Food Policy; Fertilizer Consumption; Kenya; Crop Production/Industries; Q18.
Ano: 2006
URL: http://purl.umn.edu/55167

HIV/AIDS, HUMAN CAPITAL AND ECONOMIC PROSPECTS FOR MOZAMBIQUE
Provedor de dados: 31
Autores: Arndt,   Channing.
As in other countries in the southern Africa region, a human development catastrophe is unfolding in Mozambique. Recently released data estimate HIV prevalence rates amongst the adult population in the year 2000 at around 12% with substantial regional variation. Due to the magnitude of the HIV/AIDS pandemic, it has become a top priority development issue in the southern Africa region, including Mozambique. The goal of this paper is to try to come to grips with the economic dimension. In this initial assessment, focus is on the implications for macroeconomic prospects. A dynamic computable general equilibrium approach is employed to quantify impacts on key macroeconomic variables and identify the major channels through which these impacts occur. Particular...
Tipo: Working or Discussion Paper
Palavras-chave: Labor and Human Capital.
Ano: 2002
URL: http://purl.umn.edu/16315

R&amp;D, Innovation and Growth: Evidence from Four Manufacturing Sectors in OECD Countries
Provedor de dados: 31
Autores: Ulku,   Hulya.
This paper provides an empirical analysis of the relationship between R&amp;D intensity, rate of innovation and the growth rate of output in four manufacturing sectors from 17 OECD countries. The findings suggest that the knowledge stock is the main determinant of innovation in all four manufacturing sectors and that R&amp;D intensity increases innovation in the chemicals and the electrical and electronics sector. In addition, the rate of innovation has a positive effect on the growth rate of output in all sectors except for the drugs and medical sector. These results lend strong support for the non-scale endogenous growth models.    *I am grateful to Adam Jaffe for his invaluable suggestions and comments.
Tipo: Working or Discussion Paper
Palavras-chave: Non-scale endogenous growth; R&amp;D; Patent; Innovation; Output growth; System GMM; Research and Development/Tech Change/Emerging Technologies; O14; O30; O31; O33; O41.
Ano: 2005
URL: http://purl.umn.edu/30542

Technological Leadership and Sectoral Employment Growth: A Spatial Econometric Analysis for U.S. Counties
Provedor de dados: 31
Autores: Pede,   Valerien O.; Florax,   Raymond J.G.M.; de Groot,   Henri L.F.
This paper investigates the determinants of technological catch-up and examines at a refined level of spatial and sectoral aggregation to what extent geographical and/or technological proximity to the technology leader impact regional employment growth. Technological progress is endogenously determined and depends on specialization, competition and diversity. We also allow technological progress to depend on agglomeration economies in proximate regions, and model technological progress by means of a hierarchical process of catch-up to the technology leader. Results indicate that human capital plays a crucial role in promoting sectoral employment growth. The effect of technological distance varies, depending on which sector is considered. Technological...
Tipo: Report
Palavras-chave: Regional employment growth; Technology leadership; Space; Research and Development/Tech Change/Emerging Technologies; R11; R12; C21; O32; O47.
Ano: 2011
URL: http://purl.umn.edu/102827

Is Foreign Aid Beneficial for Sub-Saharan Africa?  A Panel Data Analysis
Provedor de dados: 31
Autores: Armah,   Stephen E.; Nelson,   Carl H.
Significant ambiguity surrounds the magnitude and sign of the effect of foreign aid on economic growth. Foreign aid can potentially augment scarce domestic capital to spur growth but foreign aid can also remove positive incentive to build wealth, stalling growth. This paper characterizes the effect of foreign aid on the growth of Sub-Saharan African countries after correcting endogeneity problems that plague the estimation. Foreign aid is found to be growth promoting given good governance and using fixed effects in a static panel framework. Data from twenty-one Sub-Saharan African countries spanning 1995-2003 was used in the estimation. The finding of a significant foreign aid-growth relationship is pertinent because it suggests that increased aid to Sub...
Tipo: Conference Paper or Presentation
Palavras-chave: Food Security and Poverty.
Ano: 2008
URL: http://purl.umn.edu/6356

Shocks in economic growth = shocking effects on agricultural markets?
Provedor de dados: 31
Autores: Kavallari,   Aikaterini; Fellmann,   Thomas; Gay,   Stephan Hubertus.
Projections on the development of agricultural commodity markets underlie a given set of assumptions on economic growth. However, recent economic and financial crisis, as well as signs of quicker recovery in emerging economies, increase uncertainty in the forecasts of macroeconomic developments. This paper analyses the effects of different economic growth scenarios on agricultural commodity markets. In particular we assess the potential impacts of a faster economic growth in emerging economies on the one hand and of a replication of the recent economic downturn on the other hand. The empirical analysis uses the AGLINKCOSIMO model and builds upon the recently published European agricultural outlook of the EU Commission. The simulation results demonstrate...
Tipo: Conference Paper or Presentation
Palavras-chave: Economic growth; Agricultural commodity markets; AGLINK-COSIMO; International Relations/Trade.
Ano: 2011
URL: http://purl.umn.edu/114766

Greenhouse Gas Emissions and the Productivity Growth of Electricity Generators
Provedor de dados: 31
Autores: Murtough,   Greg; Appels,   David; Matysek,   Anna; Lovell,   C.A. Knox.
"Greenhouse Gas Emissions and the Productivity Growth of Electricity Generators" by Greg Murtough, David Appels, Anna Matysek, and C. A. Knox Lovell, was released on 18 December 2001. This paper develops and applies a measure of productivity growth that can incorporate unpriced environmental impacts. The methodology builds on the established technique of data envelopment analysis and is applied to one of the more significant environmental issues facing Australia - greenhouse gas emissions from electricity generation.  The main finding of the paper is: productivity growth estimates for electricity generators can change significantly when allowance is made for greenhouse gas emissions. The paper develops an innovative statistical technique for incorporating...
Tipo: Working or Discussion Paper
Palavras-chave: Environmental Economics and Policy.
Ano: 2001
URL: http://purl.umn.edu/31917

Export Instability, Investment and Economic Growth in Asian Countries: A Time Series Analysis
Provedor de dados: 31
Autores: Sinha,   Dipendra.
In this study, we look at the relationship between export stability, investment and economic growth in nine Asian countries using time series data. The few previous time series studies in this area have not paid any attention to stationarity and cointegration issues. We find that in most cases, the variables are non-stationary in their levels and not cointegrated. These results raise serious doubts about the results of these studies. The results are not uniform across countries casting doubts about the validity of the numerous cross-section studies. For Japan, Malaysia, Philippines and Sri Lanka, we find a negative relationship between export instability and economic growth. For (South) Korea, Myanmar, Pakistan and Thailand, we find a positive relationship...
Tipo: Working or Discussion Paper
Palavras-chave: Export instability; Growth; Stationarity; Cointegration; Teaching/Communication/Extension/Profession; C22; F49; O11.
Ano: 1999
URL: http://purl.umn.edu/28466

The Role of Knowledge Externalities in the Spatial Distribution of Economic Growth: A Spatial Econometric Analysis for US Counties, 1969–2003
Provedor de dados: 31
Autores: Pede,   Valerien O.; Florax,   Raymond J.G.M.; de Groot,   Henri L.F.
The traditional view of cities as monocentric conglomerates of people clustered around an employment center, driving economic growth in cities that subsequently trickles down to the hinterland, is increasingly being challenged. In particular, the role of space, technological leadership, human capital, increasing returns to scale and industrial clustering as well as hierarchical organization principles have been emphasized in the more recent literature. This paper utilizes exploratory and spatial econometric data analysis techniques to investigate these issues for US counties using data from 1969 through 2003. Ultimately, contiguous and hierarchical organization and interaction patterns are captured using an endogenous growth model allowing for spatial...
Tipo: Conference Paper or Presentation
Palavras-chave: Labor and Human Capital.
Ano: 2006
URL: http://purl.umn.edu/21157

Reconciling Growth and the Environment
Provedor de dados: 31
Autores: Goodwin,   Neva R.; Harris,   Jonathan M.
Macroeconomic theory and policy are strongly based on the assumption that economic growth is a fundamental goal. The environmental realities of the twenty- first century compel a reassessment of macro theory in terms of the impact of current growth patterns on planetary ecosystems. This paper examines the macroeconomic impacts of growth in terms of several major areas of conflict between economic demands and ecosystem capacities: (1) energy use and fossil fuel dependence (2) greenhouse gas emissions and climate change (3) transportation systems and automobile use (4) food systems and agricultural productivity (5) water, forests, and fisheries (6) toxic chemicals and wastes. Implications for macroeconomic theory include a modification of the goal of...
Tipo: Working or Discussion Paper
Palavras-chave: Environmental Economics and Policy.
Ano: 2003
URL: http://purl.umn.edu/15574

Trends in Research, Productivity Growth and Competitiveness in Agriculture in New Zealand and Australia
Provedor de dados: 31
Autores: Mullen,   John D.; Scobie,   Grant M.; Crean,   Jason.
Investment in R&amp;D has long been regarded as an important source of productivity growth in New Zealand and Australian agriculture. Perhaps because research lags are long, current investment in R&amp;D is monitored closely. In this paper trends in public investment in R&amp;D and in productivity growth are reviewed. Investment in R&amp;D has been flat in both countries although in recent years investment in New Zealand has increased. Nevertheless research intensity in Australia has been significantly higher than that in New Zealand. Productivity growth is also likely to have been higher. Econometric evidence about the sources of productivity growth is rarely clear. We develop some scenarios about the importance of domestic and foreign R&amp;D and other...
Tipo: Conference Paper or Presentation
Palavras-chave: Productivity; Research and development; Research evaluation; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2006
URL: http://purl.umn.edu/31965

Growth Dynamics of Dairy Processing Firms in the European Union
Provedor de dados: 31
Autores: Gardebroek,   Cornelis; Turi,   Kedir N.; Wijnands,   Jo H.M.
The structure of the dairy processing industry in the European Union has changed enormously in recent decades. In many countries the industry is characterized by a few large companies with a big market share accompanied by many small processors that often produce for niche markets. This paper investigates which factors relate to growth of dairy processing firms. Using a unique ten-year panel data set and recently developed dynamic panel data estimators, the growth process of dairy processors is investigated for six rather diverse European countries. The data structure and the estimation method allow for dealing with endogeneity issues in an appropriate way. Firm size growth measured in total assets is found to be affected by firm size, firm age and...
Tipo: Conference Paper or Presentation
Palavras-chave: EU dairy processing industry; Dynamic panel data; Firm growth; Agribusiness; Agricultural Finance; Industrial Organization.
Ano: 2009
URL: http://purl.umn.edu/51473

Public spending composition and public sector efficiency: Implications for growth and poverty reduction in Uganda
Provedor de dados: 31
Autores: Sennoga,   Edward B.; Matovu,   John Mary.
The paper examines the interrelationships between public spending composition and Uganda's development goals including economic growth and poverty reduction. We utilize a dynamic CGE model to study these interrelationships. This paper demonstrates that public spending composition does indeed influence economic growth and poverty reduction. In particular, this study shows that improved public sector efficiency coupled with re-allocation of public expenditure away from the unproductive sectors such as public administration and security to the productive sectors including agriculture, energy, water and health leads to higher GDP growth rates and accelerates poverty reduction. Moreover, the rate of poverty is faster in rural households relative to the urban...
Tipo: Report
Palavras-chave: Sennoga; Matovu; EPRC; Public expenditure; Economic growth - Uganda; Poverty reduction; Computable General Equilibrium; Agribusiness; Agricultural and Food Policy; Community/Rural/Urban Development; Consumer/Household Economics; Crop Production/Industries; Demand and Price Analysis; Financial Economics; Institutional and Behavioral Economics; Production Economics; Public Economics; Resource /Energy Economics and Policy; C68; D58; E62; F15; H62; 132.
Ano: 2010
URL: http://purl.umn.edu/93808

AGRICULTURAL DEVELOPMENT AND PRO POOR ECONOMIC GROWTH IN SUB SAHARAN AFRICA: POTENTIAL AND POLICY
Provedor de dados: 31
Autores: Kydd,   Jonathan; Dorward,   Andrew; Morrison,   Jamie; Cadisch,   Georg.
There is widespread concern at continuing, and indeed deepening, poverty in sub-Saharan Africa, and the lack of processes of rapid and broad based economic growth to combat this. There is also debate about the role agriculture in driving pro-poor economic growth with some arguing that it has a critical role in this while others see it is as largely irrelevant. This paper examines these arguments. We summarise and critique what we term the Washington Consensus on Agriculture (a consensus that appears to be eroding) and alternative positions opposing investment in agriculture. We suggest that both sets of arguments pay insufficient attention to important institutional issues in development, and, having taken these into account, we conclude that agriculture...
Tipo: Working or Discussion Paper
Palavras-chave: Food Security and Poverty; International Development.
Ano: 2002
URL: http://purl.umn.edu/10920

Productivity growth and the effects of R&amp;D in African agriculture
Provedor de dados: 31
Autores: Alene,   Arega D.
This paper measures and compares total factor productivity growth in African agriculture under contemporaneous and sequential technology frontiers over the period 1970–2004. The paper further investigates the sources of agricultural productivity growth using a fixed-effects regression model and a second-degree polynomial distributed lag structure for agricultural research. The conventional estimates show an average productivity growth rate of only 0.3% per year over the period 1970–2004. In contrast to conventional measures, however, the improved measures under sequential technology show that agricultural productivity grew at a higher rate of 1.8% per year. Technical progress, rather than efficiency change, was the principal source of productivity growth....
Tipo: Conference Paper or Presentation
Palavras-chave: Productivity growth; Sequential technology; R&amp;D; Africa; International Development; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2009
URL: http://purl.umn.edu/51436

Economics of alternative growth path, time of calving and breed type combinations across southern Australian beef cattle environments: grass finishing at the Victorian experimental site
Provedor de dados: 31
Autores: Graham,   John G.; Quinn,   Helen; Davies,   Brian Lloyd; Griffith,   Garry R.
The Beef CRC “Regional Combinations” project and its biophysical outcomes have been described in a range of journal articles and project reports. In this project, different combinations of beef cattle genetics, growth/nutritional pathways and calving seasons were examined across a number of sites in southern Australia for achievement of targeted market specifications. The information provided in these papers and reports allows identification and evaluation of the most profitable regional beef cattle production systems. The focus of this paper is on the Victorian experimental site, where the cattle were finished to slaughter weight on pasture. A range of breed types was included with emphasis on high retail beef yield and high intramuscular fat. Two...
Tipo: Article
Palavras-chave: Beef; Breed; Growth path; Economics; Evaluation; Australia; Farm Management.
Ano: 2009
URL: http://purl.umn.edu/121468

Role of Terms of Trade in Indian Agricultural Growth: A National and State Level Analysis
Provedor de dados: 31
Autores: Hazell,   Peter B.R.; Misra,   V.N.; Hojjati,   Behjat.
Using time series data, this paper analyses the relative contributions of terms of trade and non-price variables in explaining agricultural growth in recent decades in India. Agricultural growth is largely explained by expansion of irrigation, (which in the model is also a proxy for HYVs and other capital investments), and, until the 1970s, by increases in the net cultivated area. Agricultural output is inelastic, and is becoming increasingly more so over time. The terms of trade was not an important factor in explaining past growth. Even during the late 1960s and early 1970s when the terms of trade improved by 18 percent for agriculture, they only accounted for 15 percent of the growth in output. Increases in agricultural output are also found to worsen...
Tipo: Working or Discussion Paper
Palavras-chave: International Relations/Trade.
Ano: 1995
URL: http://purl.umn.edu/42815

Land Inequality and Economic Growth: A Dynamic Panel Data Approach
Provedor de dados: 31
Autores: Fort,   Ricardo; Ruben,   Ruerd.
The growing body of literature devoted to study the impact of inequality on economic growth have centred its attention in the income distribution effect, even though the theoretical relationships are more related to assets distributions than to income distribution. While some recent studies have tried to overcome this limitation by introducing indicators of this type, they found a new constraint when dealing only with time-invariant measurements for this explanatory variable. This article provides a theoretical discussion and some novel empirical tests to better understand the relationships between assets distribution and economic growth. We assembled a new panel database that includes observations for more than 30 countries over the last three decades....
Tipo: Conference Paper or Presentation
Palavras-chave: Land inequality; Economic growth; Investments; System GMM estimation; International Development; Land Economics/Use; Q15; C23; I3.
Ano: 2006
URL: http://purl.umn.edu/25582

Supply and Demand Shocks and the Growth of the Brazilian Agriculture
Provedor de dados: 31
Autores: Barros,   Geraldo Sant'Ana de Camargo; Spolador,   Humberto Francisco Silva; Bacchi,   Mirian Rumenos Piedade.
In the last decades the Brazilian agriculture had a strong growth. Our hypothesis is that most of that growth may be attributed to two general factors, which may conveniently be related to two types of shocks acting upon agriculture: demand-related and technological supply-related shocks. Demand shocks are originated both from domestic economy but also from external markets. We use Blanchard &amp; Quah (1989) type of methodology to test the relative importance of supply and demand shocks on Brazilian agricultural growth. Our results indicate that supply and demand shocks have permanent effects upon agricultural output and prices. We estimate that the agricultural output growth in Brazil is attributed in large proportion to yield increases. We argue that...
Tipo: Conference Paper or Presentation
Palavras-chave: Supply and demand shocks; Agricultural growth; Productivity; International Development; 04.
Ano: 2006
URL: http://purl.umn.edu/25286

Disaggregate Productivity Growth in Livestock Production: A Directional Malmquist Index Approach
Provedor de dados: 31
Autores: Ludena,   Carlos E.; Hertel,   Thomas W.; Preckel,   Paul V.; Foster,   Kenneth A.; Nin Pratt,   Alejandro.
Limited data on the allocation of inputs to different activities has limited agricultural economists' attempts to measure sub-sector productivity growth in agriculture. However, recent developments have enabled us to estimate total factor productivity (TFP) growth for crops and livestock accounting for input-output allocation. This paper extends previous work on TFP measurement for livestock into ruminants and non-ruminant productivity measurement, given the differences in productivity growth rates among these species. The results show that the non-ruminant sector is more dynamic than the ruminant sector, driving most of the productivity growth within the livestock sector. Given the rapid rates of productivity growth observed recently, non-ruminant...
Tipo: Conference Paper or Presentation
Palavras-chave: Total factor productivity; Malmquist index; Livestock; Ruminants; Non-ruminants; Productivity Analysis; O47; O57; Q16.
Ano: 2005
URL: http://purl.umn.edu/19395

Cereal Crop Productivity in Developing Countries: Past Trends and Future Prospects
Provedor de dados: 31
Autores: Pingali,   Prabhu L.; Heisey,   Paul W.
This paper synthesizes the evidence on cereal crop productivity in developing countries over the past 30 years and looks at future prospects for productivity growth. For more than three decades we have witnessed the phenomenal growth of cereal crop productivity in the developing world. Termed the Green Revolution, the initial phase of this growth resulted from an increase in land productivity and occurred in areas of growing land scarcity and/or areas with high land values. Significant investments in research and infrastructure development, especially irrigation, were the strategic components of this increased productivity. In the post-Green Revolution period, particularly in Asia, productivity growth has been sustained through increased input use and,...
Tipo: Working or Discussion Paper
Palavras-chave: Crop Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/7682

Amenities and Rural Appalachia Economic Growth
Provedor de dados: 31
Autores: Deller,   Steven C.; Lledo,   Victor.
Patterns of economic growth in rural Appalachia are examined with a focus on natural and built amenities. While the literature is clear that rural areas endowed with scenic beauty, lakes, forests, and wildlife, among other natural amenities, and coupled with built amenities such as golf courses, are experiencing robust economic growth. It is not clear if these patterns extend to rural Appalachia. In this applied research study we use data for rural U.S. counties. We estimate an augmented Carlino-Mills growth model with specific attention to growth patterns of Appalachia. We also build on the empirical modeling by adopting a Bayesian Modeling Average (BMA) approach to address the problem of model specification. We find that while there are some...
Tipo: Journal Article
Palavras-chave: Amenities; Quality of life; Rural economic growth; Bayesian; Community/Rural/Urban Development.
Ano: 2007
URL: http://purl.umn.edu/10153

Neoclassical Growth, Environment and Technological Change: The Environmental Kuznets Curve
Provedor de dados: 31
Autores: Rubio,   S.J.; Garcia,   J.R.; Hueso,   J.L.
The paper investigates socially optimal patterns of economic growth and environmental quality in a neoclassical growth model with endogenous technological progress. In the model, the environmental quality affects positively not only to utility but also to production. However, cleaner technologies can be used in the economy whether a part of the output is used in environmentally oriented R&amp;D. In this framework, if the initial level of capital is low then the shadow price of a cleaner technology is low relative to the cost of developing it given by the marginal utility of consumption and it is not worth investing in R&amp;D. Thus, there will be a first stage of growth based only on the accumulation of capital with a decreasing environmental quality until...
Tipo: Working or Discussion Paper
Palavras-chave: Neoclassical Growth Model; Endogenous Technological Progress; External Effects; Environmental Kuznets Curve; Environmental Economics and Policy; O33; O41; Q55; Q56.
Ano: 2009
URL: http://purl.umn.edu/56221

On the use of a probiotic (Bacillus subtilis - strain DSM 17299) as growth promoter in broiler diets
Provedor de dados: 89
Autores: Opalinski,M; Maiorka,A; Dahlke,F; Cunha,F; Vargas,FSC; Cardozo,E.
The objective of this experiment was to evaluate the effect of a probiotic (Bacillus subtilis, strain DSM 17299) in broiler diets on feed intake, weight gain, and feed conversion ratio. The experiment included 1,200 male Ross broilers from 1 to 42 days of age. Birds were randomly allocated to 4 treatments, with 10 replicates of 30 birds. The following treatments were applied: T1 - Negative Control (basal diet, with no added growth promoter; T2 - Negative Control + Bacillus subtilis (8 x 10(5) CFUs/g feed); T3 - Negative Control + Bacillus subtilis (3 x 10(5) CFUs/ g de feed) and T4 - Positive Control (avilamycin + anticoccidial from 1 to 35 days of age). At 21, 35, and 42 days of age, there was an increase of antibiotic-free diet intake as compared to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Performance; Probiotic.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000200004

Growth and body nutrient deposition of two broiler commercial genetic lines
Provedor de dados: 89
Autores: Marcato,SM; Sakomura,NK; Munari,DP; Fernandes,JBK; Kawauchi,ÍM; Bonato,MA.
The objective of this work was to study growth and body nutrient deposition profiles of male and female Cobb and Ross broilers using Gompertz equations. A total number of 1,920 one- to 56-day-old broilers were used. A randomized experimental design in a factorial arrangement (2 strains x 2 sex), with 4 replicates of 120 birds each, was applied. Diets were formulated to supply the nutrient requirements recommended by the genetic companies. A sample of birds was weekly weighed and sacrificed after 24 hours fasting. Carcasses were de-feathered and weighed again. The parameters of the Gompertz equation for body weight and its components (water, ashes, protein, and fat) were estimated. An interaction (p&lt;0.05) between sex and breed was observed for mature...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body composition; Broilers; Growth; Gompertz curves.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000200007

Rhizobia Isolated from Coal Mining Areas in the Nodulation and Growth of Leguminous Trees
Provedor de dados: 90
Autores: Moura,Ginaini Grazielli Doin de; Armas,Rafael Dutra de; Meyer,Edenilson; Giachini,Admir José; Rossi,Márcio José; Soares,Cláudio Roberto Fonsêca Sousa.
ABSTRACT An alternative for recovery of areas degraded by coal mining is revegetation with rapidly growing leguminous trees, which often do not establish in low fertility soils. The objective of this study was to evaluate the efficiency of native rhizobia isolated from coal mining areas in the nodulation and growth of leguminous trees. We isolated 19 strains of rhizobia from a degraded soil near Criciúma, SC, Brazil, and evaluated the nodulation and growth-promoting capacity of the inoculated isolates for bracatinga (Mimosa scabrella), maricá (M. bimucronata) and angico-vermelho (Parapiptadenia rigida). Isolates UFSC-B2, B6, B8, B9, B11 and B16 were able to nodulate bracatinga, providing average increases of 165 % in shoot dry matter, with a significant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Environmental recovery; Revegetation; Diazotrophs; Bioremediation.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100402

Occurrence of plant growth-promoting traits in clover-nodulating rhizobia strains isolated from different soils in Rio Grande do Sul state
Provedor de dados: 90
Autores: Vargas,Luciano Kayser; Lisboa,Bruno Brito; Schlindwein,Gilson; Granada,Camille Eichelberger; Giongo,Adriana; Beneduzi,Anelise; Passaglia,Luciane Maria Pereira.
In the last decades, the use of plant growth-promoting rhizobacteria has become an alternative to improve crop production. Rhizobium leguminosarum biovar trifolii is one of the most promising rhizobacteria and is even used with non-legume plants. This study investigated in vitro the occurrence of plant growth-promoting characteristics in several indigenous R. leguminosarum biovar trifolii isolated from soils in the State of Rio Grande do Sul, Brazil. Isolates were obtained at 11 locations and evaluated for indoleacetic acid and siderophore production and inorganic phosphate solubilization. Ten isolates were also molecularly characterized and tested for antagonism against a phytopathogenic fungus and for plant growth promotion of rice seedlings. Of a total...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rhizobacteria; Siderophore; Indoleacetic acid; Phosphate solubilization; Antagonism; Rice.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000500016

Growth regulator on oat yield indicators
Provedor de dados: 91
Autores: Krysczun,Dionatan K.; Silva,José A. G. da; Marolli,Anderson; Trautmann,Ana P. B.; Lucio,Alessandro D.; Carbonera,Roberto.
ABSTRACT Growth regulator in oat can reduce lodging with effects on yield indicators. The objective of the study is to define the optimum dose of growth regulator to reduce lodging in oats under different conditions of nitrogen (N) fertilization (reduced, high and very high) and the effects on yield indicators in the succession systems. In each succession system (soybean/oats and corn/oats), two experiments were conducted, one to quantify biomass yield and the other to estimate grain yield and lodging. In the four experiments, the design was randomized blocks with four replicates in 3 x 4 factorial scheme, for N-fertilizer doses (30, 90 and 150 kg ha-1) and growth regulator doses (0, 200, 400 and 600 mL ha-1), respectively. Growth regulator reduces lodging...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avena sativa; Trinexapac-ethyl; Lodging; Nitrogen.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017001200828

Biomass and grain yield of oats by growth regulator
Provedor de dados: 91
Autores: Marolli,Anderson; Silva,José A. G. da; Romitti,Marcos V.; Mantai,Rubia D.; Hawerroth,Maraisa C.; Scremin,Osmar B.
ABSTRACT The use of growth regulator in oats can reduce plant lodging with reflections in biomass and grain yield. The objective of the study was to determine the feasibility and efficiency of using Trinexapac-Ethyl regulator in the growth of white oat under different conditions of N-fertilizer and years favorable and unfavorable for cultivation. In this study, two experiments were conducted in the years 2011, 2012 and 2013, one for quantifying biomass production rate and the other for the determination of grain yield and lodging. The experimental design was randomized blocks with four replicates, in a 4 x 3 factorial scheme, for growth regulator doses (0, 200, 400 and 600 mL ha-1) and nitrogen doses (30, 90 and 150 kg ha-1), respectively. There is a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avena sativa; Trinexapac-ethyl; Lodging; Nitrogen; Regression.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000300163

Oat yield through panicle components and growth regulator
Provedor de dados: 91
Autores: Marolli,Anderson; Silva,José A. G. da; Mantai,Rubia D.; Brezolin,Ana P.; Gzergorczick,Maria E.; Lambrecht,Darlei M.
ABSTRACT The growth regulator modifies the expression of lodging and panicle components in oat plants, with reflexes in yield. The objective of this study was to define the optimal dose of growth regulator in oat for a maximum lodging of 5%. In addition, this study aimed to identify potential variables of the panicle to compose the multiple linear regression model and the simulation of grain yield in conditions of use of the regulator under low, high and very high fertilization with nitrogen. The study was conducted in 2011, 2012 and 2013 in a randomized block design with four replicates in a 4 x 3 factorial scheme, for growth regulator doses (0, 200, 400 and 600 mL ha-1) and N-fertilizer doses (30, 90 and 150 kg ha-1), respectively. The growth regulator...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avena sativa; Nitrogen; Trinexapac-ethyl; Multiple linear regression.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000400261

Morphological identification of Ilyonectria liriodendri and its interaction with plant growth-promoting bacteria in grapevine rootstocks
Provedor de dados: 94
Autores: Brito,Liliane Martins de; Zanette,Flávio; Biasi,Luiz Antonio; Costa,Murilo Dalla; Passos,João Frederico Mangrich dos.
Abstract  In order to analyze the pathogenicity and antagonism between grapevine rootstocks and soil microorganisms, plant growth-promoting bacteria with antibiotic effect were selected from the phytopathogen Ilyonectria liriodendri, 2T-VSC-101 isolated monosporic, in in vitro antibiosis tests. The bacterial access that produced the largest zone of inhibition was used in the seedling biotization of the grapevine rootstocks P1103, IBBT481 and VR039-16. From the interaction between isolates of plant growth-promoting bacteria and Ilyonectria liriodendri isolate resulted in three bacterial isolates with control of the mycelial growth of the phytopathogen, all of the Burkholderia gender.However, the highest control bacterium, Burkholderia catarinensis sp.nov....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Micropropagation; Acclimatization; Burkholderia catarinensis sp. nov.; Ilyonectria liriodendri.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000400401

Effects of shading on leaf physiology and morphology in the ‘Yinhong’ grape plants
Provedor de dados: 94
Autores: Wu,Yueyan; Qiu,Tian; Shen,ZiLi; Wu,Yanyan; Lu,Dan; He,Jingwen.
Abstract  Shading is a practical measure to reduce the heat stress to grape trees in the summer. However, inappropriate shading will cause the reduction in leaf photosynthesis and consequently the retardation of growth for the plants or the loss of fruit yield and quality for the mature grape trees. In this study we have used 1-year-old ‘YinHong’ grape plants growing under different levels of shading, ranging from full sunlight 0% to 80% reduction, to investigate their growth, physiological and biochemical responses. The results show that shading rate =45% did not significantly affect grape growth. Shading over 45% reduction of the full sunlight, the growth of the grape plants were started to be inhibited. In addition, soluble protein content, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grape; Growth characteristics; Shading.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000500201

Quantitative analysis of growth in coffee plants cultivated with a water-retaining polymer in an irrigated system1
Provedor de dados: 124
Autores: Souza,Antonio Jackson de Jesus; Guimarães,Rubens José; Colombo,Alberto; Sant’Ana,José Antonio do Vale; Castanheira,Dalyse Toledo.
ABSTRACT This study aimed to evaluate the use of hydro polymer retainer in the quantitative growth of coffee plants at different levels of irrigation and soil types. The experiment was conducted in pots with seedlings bag in the greenhouse of the Setor de Cafeicultura, Universidade Federal de Lavras. The experimental design was in randomized blocks in factorial (2x4x2): absence or presence of hydro polymer retainer, four levels of irrigation (25%, 50%, 75% and 100%), two soil types (sandy soil and medium texture). At 150 days evaluated the stem diameter, plant height, leaf area, number of leaves, dry weight of shoots, plant dry mass, root dry weight, root dry weight ratio of shoot, leaf area ratio, absolute growth rate, relative growth rate, net...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil types; Greenhouse; Coffea arabica L.; Hydrogel.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902016000100162

Interference from the vertical variation of soil phosphorus and from water stress on growth in maize, the soybean and sunflower
Provedor de dados: 124
Autores: Ros,Clovis Orlando Da; Matsuoka,Marcia; Silva,Rodrigo Ferreira da; Silva,Vanderlei Rodrigues da.
ABSTRACT The distribution of phosphorus (P) in the soil interferes with the availability of the nutrient and can affect plant growth. The aim of this study was to compare the growth and accumulation of P in maize, soybean and sunflower plants in vertical gradients of the nutrient in the soil, with and without water stress. The design was completely randomised with five replications, in a 3 x 2 factorial scheme: three soil depth gradients of P (decreasing, increasing and nil) and two conditions of soil water availability (with and with no water stress). The depth gradients of P were in decreasing doses of P2O5 (300, 200, 100 and 0 mg dm-3), increasing doses (0, 100, 200 and 300 mg dm-3) and equal doses (150 mg dm-3) applied to the intermediate layers...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil water; Roots; Dry weight; Nutrient accumulation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000300419

Growth of Pediococcus acidilactici on sugar cane blackstrap molasses
Provedor de dados: 59
Autores: Sant’Anna,Ernani S.; Torres,Regina Coeli O.
Pediococcus acidilactici (IL01) has grown in MRS (Man, Rogosa and Sharpe) broth modified by substitution of glucose by 2.0% (MRS-2), 3.0% (MRS-3), 4.0% (MRS-4) and 5.0% (MRS-5) sugar cane blackstrap molasses. The highest acid production was obtained in MRS-5 broth maintained at a constant pH of 5.0. The highest biomass production was obtained when P. acidilactici was grown in MRS-5 broth at initial pH 6.5, while productivity was higher in MRS-2 broth (28.16%). When the MRS-2 broth was utilized at initial pH 6.5 for a 20-hour fermentation period, the highest growth rate (dx/dt) was found in a period of 8 to 16 hours (0.290 g cells/L.h), while the specific growth rate (µ) was 0.175 (h-1) for that period, differently from the 0.441 (h-1) obtained for the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pediococcus acidilactici; Starter; Salami.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141998000300011

Sugarcane leaf area index modeling under different soil water conditions
Provedor de dados: 63
Autores: Teruel,D.A.; Barbieri,V.; Ferraro Jr.,L.A.
The knowledge of the Leaf Area Index (LAI) variation during the whole crop cycle is essential to the modeling of the plant growth and development and, consequently, of the crop yield. Sugarcane LAI evolution models were developed for different crop cycles, by adjusting observed LAI values and growing degree-days summation data on a power-exponential function. The resultant equations simulate adequately the LAI behavior during the entire crop cycle. The effect of different water stress levels was calculated in different growth periods, upon the LAI growth The LAI growth deficit was correlated with the ratio between actual evapotranspiration and máximum evapotranspiration, and a constant named kuu was obtained hi each situation. It was noticed that the kLAI...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leaf Area Index; Sugarcane; Growing degree-days; Water stress; Modeling.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161997000300008

Growth regulator losses from cotton plants due to rainfall
Provedor de dados: 63
Autores: Garcia,Rodrigo Arroyo; Toledo,Mariana Zampar; Rosolem,Ciro Antonio.
Plant growth regulators (PGRs) applied to cotton plants (Gossypium hirsutum L.) can be washed off by rainfall. It is expected that the closer the rainfall to spraying time, the higher the product loss and the higher the amount of product to be reapplied to reach the desired growth rate. The objective of this study was to evaluate the effects of time between rainfall and application of either mepiquat chloride or chlormequat chloride to cotton on plant growth, as well as, estimate the need for PGR reapplication. Cotton was grown in 12-L pots with soil in a greenhouse. PGRs were applied forty days after seedling emergence, when 50% of plants had one pinhead square. Rainfall was simulated 1, 2, 4, 6, or 24 h after spraying. Plant height was measured just...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gossypium hirsutum L.; Mepiquat chloride; Chlormequat chloride.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000200005

Determination of a point sufficiently close to the asymptote in nonlinear growth functions
Provedor de dados: 63
Autores: Mischan,Martha Maria; Pinho,Sheila Zambello de; Carvalho,Lídia Raquel de.
Growth functions with upper horizontal asymptote do not have a maximum point, but we frequently question from which point growth can be considered practically constant, that is, from which point the curve is sufficiently close to its asymptote, so that the difference can be considered non-significant. Several methods have been employed for this purpose, such as one that verifies the significance of the difference between the curve and its asymptote using a t-test, and that of Portz et al. (2000), who used segmented regression. In the present work, we used logistic growth function, which has horizontal asymptote and one inflection point, and applied a new method consisting in the mathematical determination of a point in the curve from which the growth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nonlinear regression; Logistic model; Critical point of growth.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000100016

Growth promotion of common bean and genetic diversity of bacteria from Amazon pastureland
Provedor de dados: 63
Autores: Ferreira,Linnajara de Vasconcelos Martins; Carvalho,Fernanda de; Andrade,Júlia Fonseca Colombo; Moreira,Fatima Maria de Souza.
ABSTRACT: A significant number of bacterial species, particularly in the rhizosphere, may benefit plant growth and development. This group of bacteria is known as plant growth-promoting rhizobacteria (PGPR). This study identified genetically isolates of common bean nodules used to trap bacteria from Amazon pastureland and investigated their capacity of nodulating and promoting growth of common bean when inoculated or co-inoculated with CIAT899 strain (Rhizobium tropici). Two experiments were carried out in a greenhouse, in axenic conditions, using the common bean cultivar Talismã. In the first experiment, 56 PGPR strains were evaluated individually regarding growth promotion and nodulation. In the second experiment, inoculation of seven PGPR strains...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Co-inoculation; Endophytic bacteria; Rhizobia.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000600461

Tillering of Tifton 85 bermudagrass in response to nitrogen rates and time of application after cutting
Provedor de dados: 63
Autores: Premazzi,Linda Monica; Monteiro,Francisco Antonio; Corrente,José Eduardo.
Nitrogen fertilization is determinant for pasture productivity, as it results in increasing forage yield and is associated with the growth physiology of forage plants. An experiment was carried out in a greenhouse to evaluate the effects of nitrogen rates and times of application after cutting on Tifton 85 Bermuda grass (Cynodon spp.) tillering. Plants were grown in a Typic Quartzipsamment soil and nitrogen rates were 0, 80, 160 and 240 mg kg-1 of soil; times of application were immediately after and seven days after cutting. A 4 x 2 factorial experiment was set in a completely randomized block design (n= 4). Plants were evaluated in two sequential growth periods - 39 and 41 days. Nitrogen rates affected tiller density, considering the initial number of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cynodon; Tiller weight; Tiller density; Grass; Fertilization.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000300023

Plant response to mechanical resistance and air-filled porosity of soils under conventional and no-tillage system
Provedor de dados: 63
Autores: Silva,Alvaro Pires da; Imhoff,Silvia; Kay,Beverley.
Roots may respond to restrictive soil physical conditions and send signals to shoots to control plant growth. Soil mechanical resistance and aeration can be managed to improve the soil physical conditions for plant growth by using different tillage systems. The objective of this study was to quantify the influence of no-tillage and conventional-tillage systems on plant response to soil mechanical resistance and aeration. The study was carried out on a farm, cultivated with corn, with a side-by-side comparison of no-tillage and conventional-tillage systems. Thirty-two paired sampling sites were located along two transects, located one in each treatment. Soil water content, bulk density, and plant growth were measured in each treatment. Based on the soil...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant growth; Plant height; Soil physical properties; Tillage system.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000400016

Growth and yield models for eucalyptus stands obtained by differential equations
Provedor de dados: 63
Autores: Mendonça,Adriano Ribeiro de; Calegario,Natalino; Silva,Gilson Fernandes da; Chaves e Carvalho,Samuel de Pádua.
ABSTRACT: The main purpose of this study was to assess nonlinear models generated by integrating the basal area growth rate to estimate the growth and yield of forest stands. The database was collected from permanent sample units, in Paraopeba county, in the state of Minas Gerais, Brazil. The stands were represented by Eucalyptus camaldulensis × Eucalyptus urophylla hybrid trees, with 3 × 3 meters of spacing. The data were divided into two groups: fitting and validating databases. Two nonlinear models (Strategy A and Strategy B) were developed using differential equations to estimate the basal area growth and yield of the sample units. The logistic model was fitted to estimate the volumetric yield as a function of age, site index and basal area. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nonlinear models; Compatible models; Biological consistency.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000500364

Critical points in logistic growth curves and treatment comparisons
Provedor de dados: 63
Autores: Passos,José Raimundo de Souza; Pinho,Sheila Zambello de; Carvalho,Lídia Raquel de; Mischan,Martha Maria.
Several biological phenomena have a behavior over time mathematically characterized by a strong increasing function in the early stages of development, then by a less pronounced growth, sometimes showing stability. The separation between these phases is very important to the researcher, since the maintenance of a less productive phase results in uneconomical activity. In this report we present methods of determining critical points in logistic functions that separate the early stages of growth from the asymptotic phase, with the aim of establishing a stopping critical point in the growth and on this basis determine differences in treatments. The logistic growth model is fitted to experimental data of imbibition of araribá seeds (Centrolobium tomentosum)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nonlinear regression; Asymptotic regression; Stopping critical level; Seeds imbibition.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162012000500004

Age and growth of Hypophthalmus edentatus (Spix), (Siluriformes, Hypophthalmidae) in the Itaipu Reservoir, Paraná, Brazil
Provedor de dados: 104
Autores: Ambrósio,Ângela Maria; Gomes,Luiz Carlos; Agostinho,Ângelo Antônio.
Age and growth of Hypophthalmus edentatus (Spix, 1829) (Siluriformes, Hypophthalmidae) was determined. Data were collected from December 1983 to November 1984 and from April 1997 to March 1998 in the Itaipu Reservoir. To evaluate reading consistency, it was analyzed the coefficient of variation of the total length for each annulus observed in the otoliths. Through marginal increment analysis, it was determined that the annuli formed annually (April) indicating that otoliths may be used in the study of age and growth of the species. Food supply was considered the main factor affecting growth and annuli formation in both periods. Back-calculated data were used to assess if the Rosa Lee phenomenon, commom in selective samples like commercial fishing, occured....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Age; Growth; Hypophthalmus edentatus; Itaipu Reservoir; Otoliths.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000200002

Crescimento de Callinectes danae Smith (Decapoda, Portunidae) da Lagoa da Conceição, Florianópolis, Santa Catarina, Brasil
Provedor de dados: 104
Autores: Branco,Joaquim Olinto; Masunari,Setuko.
Studies on the growth of the blue crab C. danae were carried out by the analysis of size-frequency distributions, and the growth curves were determined for both sexes through Bertalanffy equation. 613 males and 511 females were obtained from 10 collecting sites of the lagoon, at night, monthly from January/88 to July/89. The growth curves in carapace width were described according to the following equations: Wid∞ = 14.0 (1-e-0,6975.t) for males and Wid∞ = 13.3 (1-e-0,6555.t) for females. The growth curves in body weigth were also determined, based on the equations of the growth curves and the relationship between body weight and carapace width. The equations are:Wt = 156.9 (1-e-0,6975.t)2.9153 for males, Wt = 134.0(1-e-0.6555.t)2.8994 for females.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Callinectes danae; Growth curves; Conceição Lagoon; Florianópolis; Brazil.
Ano: 1992
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751992000100008

Estudo do crescimento e da reprodução de Leptinaria unilamellata (D'orbigny) (Mollusca, Subulinidae) em laboratório
Provedor de dados: 104
Autores: Almeida,Marcelo Nocelle de; Bessa,Elisabeth Cristina de Almeida.
Biological aspects of Leptinaria unlamellata (d'Orbigny, 1835) were studied, such as: onset of sexual maturity, occurrence of self-fertilization and shell length measurement at different stages of development. In isolated specimens of L. unilamellata, sexual maturity was reached at 74 days (minimum time) and 104 days (maximum time). For the grouped specimens, the minimum time was 71 days. The occurrence of self-fertilization was observed in both species, 100% of specimens. The total numberof young per birth varied from one to 22 (average: 7,35 ± 5,78), the total number of offsprings per mollusc varied from two to eight (average: 4,1 ± 1,41) and total number of young per mollusc varied from five to 46 (average: 30,21 ± 8,08). As to the shell length in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leptinaria unilamellata; Biology; Growth; Reproduction.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000400009

Growth curve of Balloniscus glaber Araujo &amp;amp; Zardo (Crustacea, Isopoda, Oniscidea) from Parque Estadual de Itapuã, Rio Grande do Sul, Brazil
Provedor de dados: 104
Autores: Meinhardt,Helena; Quadros,Aline F.; Araujo,Paula B.
Based on field data, this study presents the growth curve of Balloniscus glaber Araujo &amp;amp; Zardo, 1995, a terrestrial isopod species found in Parque Estadual de Itapuã (PEI), Rio Grande do Sul, Brazil. Specimens were monthly sampled, from May 2004 to April 2005, at PEI. Captured individuals were sexed, their cephalothorax width was measured, and the growth curve was described according to von Bertalanffy's model. Male and female growth curves are described by the equations: Wt = 2.256[1-e-0.00394(t+91.128)] and Wt = 2.588[1-e-0.00301(t+101)], respectively. Curves show differential growth between males and females, with females reaching higher W&lt;FONT FACE=Symbol&gt;¥&lt;/FONT&gt;, and a slower growth rate than males. Based on theses curves, life...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Life span; Terrestrial isopods; Neotropical Region; Von Bertalanffy.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000400030

IDENTIFICATION OF ENDOPHYTIC BACTERIA OF SEEDS FROM Cedrela odorata L. (Meliaceae) WITH BIOTECHNOLOGICAL CHARACTERISTICS
Provedor de dados: 37
Autores: ESPINOSA-ZARAGOZA,Saúl; SÁNCHEZ-CRUZ,Ricardo; SANZÓN-GÓMEZ,Diana; ESCOBAR-SANDOVAL,Margarita C.; YAÑEZ-OCAMPO,Gustavo; MORALES-CONSTANTINO,Mario A.; WONG-VILLARREAL,Amoldo.
ABSTRACT In the present study, 62 endophytic bacterial strains of cedar seeds (Cedrela odorata L.), collected in the municipalities of Huehuetán, Motozintla, and Pijijiapan in the state of Chiapas, Mexico were isolated. The goal was to identify characteristics of biotechnological interest such as biocontrol, promotion ofplant growth, and growth in aromatic compounds. The strains were identified by the partial sequence of the 16S ribosomal gene as belonging to the Bacillus genus. The biocontrol capacity of phytopathogenic fungi, production of indoleacetic acid (IAA), solubilization of phosphate, and growth in xenobiotic compounds (phenanthrene, benzene, anthracene, or phenol) were detected in 26 strains of the 62 isolates. 21 % of the strains inhibited the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cedar; Phytopathogenic; Aromatic Hydrocarbons; Indole acetic Acid.
Ano: 2021
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2021000200196

ALLELOPATHIC POTENTIAL OF Serjania lethalis: EVIDENCE FROM Sesamum indicum
Provedor de dados: 37
Autores: De Cassia PEREIRA,Viviane; ANESE,Simoni; IMATOMI,Maristela; Umeda GRISI,Patrícia; MONTE CANEDO,Enzo; JULIANO GUALTIERI,Sonia Cristina; RODRIGUES-FILHO,Edson.
This study was designed to test the effect of different fractions of ethanolic extracts of young (y) and mature (m) leaves of Serjania lethalis A. St- Hil (Sapindaceae) on sesame (Sesamum indicum L.) seedling growth and metaxylem cells. Crude ethanolic extracts were prepared from the powder of young and mature S. lethalis leaves and fractionated by means of column chromatography. For the seedling growth bioassay, sesame seeds germinated at concentrations of 0.8, 0.4 and 0.2 mg mL-1 were used. After seven days, the lengths of the aerial part and of the primary root were measured. The sesame metaxylem cell growth bioassay was performed with seedlings grown in solutions containing the different fractions in the same concentrations as above. The tested...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerrado; Phytotoxicity; Sapindaceae; Sesame; Xylem development.
Ano: 2015
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2015000100004

Effects of salinity on seed germination, seedling growth and survival of Spartina ciliata Brong
Provedor de dados: 39
Autores: Cordazzo,César Vieira.
The effects of different salinities on the germination of Spartina ciliata seeds were tested during 40 days in the laboratory, using six concentrations of NaCl (0,45, 80, 130, 170 and 215 mM) besides three concentrations of seawater (25,30 and 35‰). In addition, the survival and growth of seedlings were tested in five constant salinity regimes (0,45, 80 and 170 mM NaCl) as well as in five regimes of simulating seawater overwash. The results showed that seeds possed a high germination capacity over a wide range of salinities (0 to 215 mM NaCl). Although concentrations close to full-strength seawater completely inhibited seed germination, the transfer of the ungerminated seeds to freshwater immediately stimulated this. The effects of salinity on seedling...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salinity stress; Seed germination; Seedling growth; Coastal dune plant; Spartina ciliata.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33061999000300012

Effect of flooding on survival and initial growth of Ocotea pulchella (Nees) Mez. seedlings in semi-controlled light conditions
Provedor de dados: 39
Autores: Pires,Luciana Andrea; Cardoso,Victor José Mendes.
Taking into account the occurrence of Ocotea pulchella in areas subjected to periodic flooding, this work aimed to evaluate the survival and initial development of Ocotea pulchella seedlings (2 months old) and juveniles (9 months old) in response to waterlogging under different light regimes by varying both light quantity and light quality, in order to test for possible flood tolerance of the species as affected by light conditions. Three levels of soil moisture (field capacity, mean flooding - only for seedlings - and full flooding) and four light treatments (full sun, neutral shade, far red enriched shading and neutral plus far red) were tested. The survival of seedlings and juveniles during one year was relatively high, whereas growth was negatively...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Restinga forest; Juveniles; Waterlogging; Development.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000200019

Allelopathic potential of bark and leaves of Esenbeckia leiocarpa Engl. (Rutaceae)
Provedor de dados: 39
Autores: Souza,Flaviana Maluf; Gandolfi,Sergius; Perez,Sonia Cristina Juliano Gualtieri de Andrade; Rodrigues,Ricardo Ribeiro.
We investigated the inhibitory potential of aqueous extracts of bark and leaves of Esenbeckia leiocarpa Engl. on lettuce germination and early seedling growth. We compared the effects of four concentrations (100, 75, 50 and 25%) of each extract to water and polyethylene glycol (PEG 6000) solution controls for four replicates of 50 seeds for germination and four replicates of ten seedlings for seedling growth. The inhibitory effects of E. leiocarpa extracts on the percentage of germination and on the germination speed seemed to be more than simply an osmotic effect, except for the percentage of seeds germinated in bark extracts. When compared to water control, both bark and leaf extracts delayed germination, and leaf extracts also affected the percentage of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelopathy; Germination; Growth; Inhibition; Plant-plant interaction.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062010000100016

The effects of salinity on growth and survival of mangrove seedlings changes with age
Provedor de dados: 39
Autores: Kodikara,Kodikara Arachchilage Sunanda; Jayatissa,Loku Pullukuttige; Huxham,Mark; Dahdouh-Guebas,Farid; Koedam,Nico.
ABSTRACT Six wide-ranging mangrove species, Rhizophora apiculata, R. mucronata, Avicennia marina, A. officinalis, Bruguiera gymnorrhiza, and B. sexangula, were selected to study the growth and survival of seedlings under three contrasting salinity treatments over a 30-week period: low (3-5psu), moderate (15-17psu) and high (33-36psu). Seedlings grown under high salinity exhibited significantly lower performance (p&lt;0.05) in survival rates, cumulative shoot height, mean growth rates, mean total leaf area, and mean dry weight, compared to those under low and moderate salinity regimes. The low salinity treatment provided the best conditions for initial establishment and growth of the seedlings of all species until 15-20 weeks of age. However, the same...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avicennia; Bruguiera; Early growth; Mangroves; Nursery; Planting; Rhizophora; Salinity; Sri Lanka; Survival.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000100037

Assessment of the dendrochronological potential of Licaria bahiana Kurz, an endemic laurel of lowland Atlantic forests in Brazil
Provedor de dados: 39
Autores: Fontana,Cláudia; Santini-Junior,Luiz; Olmedo,Gabriela Morais; Botosso,Paulo César; Tomazello-Filho,Mario; Oliveira,Juliano Morales.
ABSTRACT The Atlantic Forest of southeastern Brazil has been considered to have the highest number of tree species per hectare in the world. Assessing the influence of climate on tropical tree species is a priority in the face of ongoing climate change, and for which dendrochronological studies have been important. We address the dendrochronological potential of Licaria bahiana Kurz (Lauraceae), an endemic species of the Atlantic forests. We studied growth ring anatomy of L. bahiana and applied dendrochronological methods to investigate how short-term variation in climate affect its radial growth. Distinct growth rings were observed in all individuals and demarcated by darker tangential fiber zones in latewood. Trees showed high climatic sensitivity (0.48)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Climate; Dendroecology; Lauraceae; Tree-rings; Wood anatomy; Tabuleiro forests.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000300454

Biostimulation of inoculation with Glomus proliferum and application of humic acid in the in vitro growth of Lunularia cruciata
Provedor de dados: 39
Autores: Nobre,Camila Pinheiro; Huertas,Orlando Carlos Tavares; Tardin,José Rogério Figueira; Saggin Júnior,Orivaldo José; Fonseca,Henrique Manoel Apolónia Coutinho; Berbara,Ricardo Luis Louro.
In this study, we evaluated the growth of the liverwort Lunularia cruciata, inoculated or not with the arbuscular mycorrhizal fungi (AMF) Glomus proliferum (15 spores per Petri dish), in Strullu-Romand Variant (SRV) medium modified and enriched with humic acid (HA) at different concentrations (0, 20, 40 and 80 mg C L−1), as well as the sporulation of the AMF. We assessed the absolute growth rate (AGR) and relative growth rate (RGR) at inoculation, as well as at 7, 14, 21, 28, 43, 52 and 60 days after inoculation (DAI), whereas we assessed sporulation at 25, 43, 60 and 70 DAI. The main determinant of L. cruciata growth was the presence of AMF. With and without G. proliferum inoculation, respectively, the AGR peaked at 39 and 42 DAI, and the RGR was 0.0474...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arbuscular mycorrhizal fungi; Liverworts; Monoxenic cultures; Humic substances.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400017

Plant growth analysis and seed vigor expression: effects of soil waterlogging during rye plant development
Provedor de dados: 39
Autores: Pedó,Tiago; Martinazzo,Emanuela Garbin; Aumonde,Tiago Zanatta; Villela,Francisco Amaral.
This study aimed to evaluate the growth, assimilate partitioning and seed vigor expression of rye seeds subjected to waterlogging during development. The experimental design was completely randomized with six replications and three treatments. The treatments involved different waterlogging periods: a) no waterlogging; b) single waterlogging of three days; and c) two soil waterlogging periods of three days. The plants were collected at regular intervals of 14 days after emergence until the end of the growth cycle, measuring the dry matter accumulation and the leaf area for growth analysis and dry matter partition between the organs and number of flowers. The other calculated indices included the harvest index and relative seedling emergence rate originating...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Germination speed index; Net assimilation rates; Relative growth rates; Secale cereale L.; Stress.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000100001

Root growth and proton efflux rates of rice seedlings in a greenhouse environment
Provedor de dados: 39
Autores: França,Marcel Giovanni Costa; Rossiello,Roberto Oscar Pereyra; Ramos,Flávia Toledo; Zonta,Everaldo.
Growth patterns and mean proton efflux rates (E H+) in roots of rice seedlings (Oryza sativa cv. IAC 47) grown under light conditions in a greenhouse environment were studied. Fifteen days after emergence, seedlings were transferred to pots containing 3.7 L of nutrient solution with 1.43 mmol NNH4+ L¹ as the sole source of nitrogen, to induce four sequential cycles of solution acidification, starting with a pH value of 5.3. Mean proton effluxes were computed based on growth periods of 48 h (from 0 to 192 h). E H+ values were estimated from values of relative root growth rates (RGR), expressed as root area (RA) or fresh mass (FM), and the linear coefficient of the regression of total free protons in nutrient solution (U H+) on RA or FM. Total free protons...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Root area; Fresh root mass; Relative growth rate; Acidification gradient.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062006000100003

Comparing non-linear mathematical models to describe growth of different animals
Provedor de dados: 2
Autores: Teleken, Jhony Tiago; Galvão, Alessandro Cazonatto; Robazza, Weber da Silva.
The main objective of this study was to compare the goodness of fit of five non-linear growth models, i.e. Brody, Gompertz, Logistic, Richards and von Bertalanffy in different animals. It also aimed to evaluate the influence of the shape parameter on the growth curve. To accomplish this task, published growth data of 14 different groups of animals were used and four goodness of fit statistics were adopted: coefficient of determination (R2), root mean square error (RMSE), Akaike information criterion (AIC) and Bayesian information criterion (BIC). In general, the Richards growth equation provided better fits to experimental data than the other models. However, for some animals, different models exhibited better performance. It was obtained a possible...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body weight gain; Richards model; Goodness of fit.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/31366

Influence of light on the initial growth of invasive Cryptostegia madagascariensis Bojer in the Brazilian semiarid region
Provedor de dados: 3
Autores: Brito, Selma Freire de; Pinheiro, Charles Lobo; Nogueira, Francisco Carlos Barboza; Medeiros Filho, Sebastião; Matos, Dalva Maria da Silva.
The invasion by Cryptostegia madagascariensis causes economic and environmental problems in Northeastern Brazil. Current study evaluates the initial growth of C. madagascariensis on light gradient. The experiment used 0, 30, 50 and 70% shading treatments arranged in a completely randomized design and evaluated in four periods, namely, 35, 50, 65 and 80 days. Height, absolute growth rate, relative growth rate, number of side branches, number of leaves, leaf area, specific leaf area, leaf area ratio, root mass ratio, stem mass ratio, leaf mass ratio and leaf area/root mass ratio were evaluated. Results showed that the height was greater in shade environments, and the greater the available light, the greater was the number of side branches. C....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Functional traits; Caatinga; Shading; Morphological adjustments; Biomass.
Ano: 2015
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/28179

High temperatures on root growth and lignification of transgenic glyphosate-resistant soybean
Provedor de dados: 115
Autores: Zonetti,P. da Costa; Suzuki,L. Sayuri; Bonini,E. Aparecida; Ferrarese,M. L. Lucio; Ferrarese-Filho,Osvaldo.
Glyphosate resistant transgenic soybean [Glycine max (L.) Mettill] expresses a glyphosate insensitive EPSPS (5-enolpyruvylshikimate-3-phosphate synthase). This enzyme is involved in important secondary metabolism pathways, including lignin biosynthesis. Thus, differences in lignin content and growth between susceptible (OC14) and glyphosate-resistant soybean may be observed. The objective of this study was to evaluate differences between growth and lignin content of roots in transgenic and OC14 soybean cultivated at high temperatures. Seeds from the OC14 soybean and its transgenic cultivar, CD213RR, were germinated at 25, 27.5, 30 and 32.5 °C. After 3 d, seedlings were cultivated in Hoagland half-strength nutrient solution during 12 h photoperiods and at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glyphosate; Abiotic stress; Glycine max; Plants; Climatic changes.
Ano: 2012
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952012000600003

Studies on cambial activity: advances and challenges in the knowledge of growth dynamics of Brazilian woody species
Provedor de dados: 42
Autores: CALLADO,CÁTIA H.; VASCONCELLOS,THAÍS J. DE; COSTA,MONIQUE S.; BARROS,CLAUDIA F.; ROIG,FIDEL A.; TOMAZELLO-FILHO,MÁRIO.
The lack of specific research on the sequence of events that determine plant growth from meristem until wood formation represents a gap in the knowledge of growth dynamics in woody species. In this work, we surveyed published studies concerning cambial activity of Brazilian native species aiming at allowing the comparison of applied methods and obtained results. The annual cambial seasonality was observed in all the investigated species. Nevertheless, we found high heterogeneity in the used methodologies. As a result from this analysis, our opinion points to the need for standardizing sampling protocols and for discussing the suitability of experimental designs. This will help to define with greater precision the factors that determine the radial growth in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Wood formation; Growth rings; Radial growth; Dendrochronology.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000100277

Effects of FGF-2 and EGF removal on the differentiationof mouse neural precursor cells
Provedor de dados: 42
Autores: Schwindt,Telma T.; Motta,Fabiana L.; Gabriela F.,Barnabé; Cristina G.,Massant; Guimarães,Alessander O.; Calcagnotto,Maria Elisa; Pesquero,João B.; Mello,Luiz E.
Cell therapy for neurological disorders has advanced, and neural precursor cells (NPC) may become the ideal candidates for neural transplantation in a wide range of diseases. However, additional work has to be done to determine either the ideal culture environment for NPC expansion in vitro, without altering their plasticity, or the FGF-2 and EGF mechanisms of cell signaling in neurospheres growth, survival and differentiation. In this work we evaluated mouse neurospheres cultured with and without FGF-2 and EGF containing medium and showed that those growth factors are responsible for NPC proliferation. It is also demonstrated that endogenous production of growth factors shifts from FGF-2 to IGF-1/PDGFb upon EGF and FGF-2 withdrawal. Mouse NPC cultured in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neural precursor cells; Neurosphere; Fibroblast growth factor 2; Epidermal growth factor; Differentiation.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000300009

Enhancement of clover growth by inoculation of P-solubilizing fungi and arbuscular mycorrhizal fungi
Provedor de dados: 42
Autores: Souchie,Edson L.; Azcón,Rosario; Barea,Jose M.; Silva,Eliane M.R.; Saggin-Júnior,Orivaldo J.
This study evaluated the synergism between several P-solubilizing fungi isolates and arbuscular mycorrhizal fungi to improve clover ( Trifolium pratense) growth in the presence of Araxá apatite. Clover was sown directly in plastic pots with 300g of sterilized washed sand, vermiculite and sepiolite 1:1:1 (v:v:v) as substrate, and grown in a controlled environment chamber. The substrate was fertilized with 3 g L-1 of Araxá apatite. A completely randomized design, in 8×2 factorial scheme (eight P-solubilizing fungi treatments with or without arbuscular mycorrhizal fungi)and four replicates were used. The P-solubilizing fungi treatments consisted of five Brazilian P-solubilizing fungi isolates (PSF 7, 9, 20, 21 and 22), two Spanish isolates ( Aspergillus niger...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Araxá apatite; Phosphate solubilization; Co-inoculation; Plant growth promotion; Rhizosphere.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000300023

Isolation and prospection of diazotrophic rhizobacteria associated with sugarcane under organic management
Provedor de dados: 42
Autores: RODRIGUES,ARIANA A.; ARAÚJO,MARCUS VINÍCIUS F.; SOARES,RENAN S.; OLIVEIRA,BRUNO F.R. DE; RIBEIRO,IGOR D.A.; SIBOV,SERGIO T.; VIEIRA,JOSÉ DANIEL G.
Abstract Microorganisms associated with organic management are essential in nutrient transformation and release for plant use. The present study aimed to isolate, identify and characterize plant growth promoting diazotrophic rhizobacteria associated with sugarcane under organic management. Rhizospheres of organic sugarcane varieties IAC 911099 and CTC4 were sampled and inoculated onto nitrogen free NFb and Burk media. The isolated microorganisms were screened in vitro concerning their ability to produce plant growth promoting factors. Eighty-one bacteria were isolated; 45.6% were positive for the nifH gene and produced at least one of the evaluated plant growth promotion factors. The production of indole-3-acetic acid was observed in 46% of the isolates,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Organic agriculture; Plant growth promoting rhizobacteria; NifH; Burkholderia; Sphingobium; Rhizobium.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703813

Osteohistology of the silesaurid Sacisaurus agudoensis from southern Brazil (Late Triassic) and implications for growth in early dinosaurs
Provedor de dados: 42
Autores: VEIGA,FÁBIO H.; BOTHA-BRINK,JENNIFER; RIBEIRO,ANA MARIA; FERIGOLO,JORGE; SOARES,MARINA B.
Abstract: The non-dinosaurian dinosauriform silesaurids are the closest relatives of crown-group dinosaurs and are thus, important for understanding the origins of that group. Here, we describe the limb bone histology of the Late Triassic silesaurid Sacisaurus agudoensis from the Candelária Sequence of the Santa Maria Supersequence, Rio Grande do Sul state, Brazil. The sampled bones comprise eight femora and one fibula from different individuals. The microscopic analysis of all elements reveals uninterrupted fibrolamellar bone tissue indicating rapid growth. A transition to slower growing peripheral parallel-fibered bone tissue in some individuals indicates a decrease in growth rate, suggesting ontogenetic variation within the sample. The osteohistology of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Archosauria; Bone microstructure; Dinosauriform; Fibrolamellar bone; Growth rates.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000400512

Root distribution and its association with bean growth habit
Provedor de dados: 42
Autores: VELHO,LUIS P.S.; MELO,RITA C. DE; BERNARDY,JOÃO PEDRO F.; GRIGOLO,SIBILA; GUIDOLIN,ALTAMIR F.; COIMBRA,JEFFERSON L.M.
ABSTRACT Associations between root distribution and bean growth habit may contribute to the selection of genotypes adapted to restrictive environments. The present work aimed to relate and compare root distribution with the growth habit in beans. 10 bean genotypes of different growth habits (I, II and III) were evaluated for root distribution in two agricultural years (2014/15 and 2015/16). The genotypes responded similarly for the trait root distribution throughout the agricultural years, without any simple effect of the genotype x year interaction. The factors genotype and years were significant for the trait. The genotypes of a determinate habit showed significant differences compared to other genotypes (II and III), which were ascribed to their poor...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abiotic stresses; Contrasts; Genotype x environment interaction; Phaseolus vulgaris L.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000401837

Consortium of five fungal isolates conditioning root growth and arbuscular mycorrhiza in soybean, corn, and sugarcane
Provedor de dados: 42
Autores: FARIAS,CHRISTYAN P.; CARVALHO,RAFAEL C. DE; RESENDE,FELIPE M.L.; AZEVEDO,LUCAS C.B.
Abstract Plant growth and arbuscular mycorrhizal colonization were studied in sugarcane, corn and soybean by applying five plant growth promoting fungi: Beauveria bassiana, Metarhizium anisopliae, Pochonia chlamydosporia, Purpureocillium lilacinum, and Trichoderma asperella. Sugarcane, corn and soybean were grown in pots under two treatments: (1) inoculation with the fungal consortium and (2) control without inoculation. In the inoculated treatment, fungal spore suspension were applied to the seeds and shoots were sprayed every 28 days. Means were analyzed by analysis of variance and Tukey’s test at 5% probability level. The experiment was arranged in a completely randomized design, with six replications. Fungi consortium mediate root growth in soybean and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant growth promoting fungi; Entomopathogenic fungi; Arbuscular mycorrhizal; Phytohormones.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703649

N deposition affects allelopathic potential of Amaranthus retroflexus with different distribution regions
Provedor de dados: 42
Autores: WANG,CONGYAN; LIU,JUN; ZHOU,JIAWEI.
ABSTRACT This study aims to determine the allelopathic potential of Amaranthus retroflexus (Ar) with different climatic zones on seed germination and growth of A. tricolor (At) treated with a gradient N addition. Ar leaf extracts only displayed significantly allelopathic potential on the underground growth of Ar but not the aboveground growth of At. The allelopathic potential of Ar leaf extracts on root length of At were enhanced under N addition and there may be a N-concentration-dependent relationship. The effects of the extracts of Ar leaves that collected from Zhenjiang on seed germination and growth of At may be higher than that collected from Jinan especially on root length of At under medium N addition. This reason may be the contained higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelopathic potential; Invasive plant; N deposition; Seed germination; Amaranthus retroflexus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000300919

Weight evaluation of Tabapuã cattle raised in northeastern Brazil using random-regression models
Provedor de dados: 45
Autores: Oliveira,M.R.; Azevêdo,D.M.; Malhado,C.; Pires,L.; Martins Filho,R.; Sousa Júnior,S.
ABSTRACT The objective of this study is to compare random-regression models used to describe changes in evaluation parameters for growth in Tabapuã bovine raised in the Northeast of Brazilian. The M4532-5 random-regression model was found to be best for estimating the variation and heritability of growth characteristics in the animals evaluated. Estimates of direct additive genetic variance increased with age, while the maternal additive genetic variance demonstrated growth from birth to up to nearly 420 days of age. The genetic correlations between the first four characteristics were positive with moderate to large ranges. The greatest genetic correlation was observed between birth weight and at 240 days of age (0.82). The phenotypic correlation between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Age; Covariance functions; Growth curve; Legendre polynomials; Livestock.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200457

Expression of the carotenoid biosynthesis genes in Xanthophyllomyces dendrorhous
Provedor de dados: 48
Autores: LODATO,P; ALCAÍNO,J; BARAHONA,S; NIKLITSCHEK,M; CARMONA,M; WOZNIAK,A; BAEZA,M; JIMÉNEZ,A; CIFUENTES,V.
In the yeast Xanthophyllomyces dendrorhous the genes idi, crtE, crtYB, crtl and ast are involved in the biosynthesis of astaxanthin from isopentenyl pyrophosphate. The carotenoid production and the kinetics of mRNA expression of structural genes controlling the carotenogenesis in a wild-type ATCC 24230 and in carotenoid overproducer deregulated atxS2 strains were studied. The biosynthesis of carotenoid was induced at the late exponential growth phase in both strains. However, the cellular carotenoid concentration was four times higher in atxS2 than in the wild-type strain in the exponential growth phase, suggesting that carotenogenesis was deregulated in atxS2 at the beginning of growth. In addition, the maximum expression of the carotenogenesis genes at...
Tipo: Journal article
Palavras-chave: Xanthophyllomyces dendrorhous; Carotenogenesis genes; MRNA expression.
Ano: 2007
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602007000100008

Growth forms of Parietariadebilis (Urticaceae) and Veronica persica (Plantaginaceae)
Provedor de dados: 51
Autores: Dellaferrera,Ignacio M; Panigo,Elisa S; Vegetti,Abelardo C; Perreta,Mariel G.
This work analyzes growth forms in V. persica and P. debilis, in order to identify their structural development under undisturbed conditions. Temporal and spatial variation in branching system, structural and developmental features as well as growth direction and foliar sequence were studied in plants grown from seed in growth rooms and in plants collected in the field. In both species, the main axis and the basal branches behave similarly, so they may be considered equivalent structures. All structures produced form a synflorescence. Along the main axis and the basal paraclades of V.persica, a basal branching zone and an inhibition zone was observed with opposite phylotaxis. At the end of axes a flower production zone of alternate phyllotaxis was found....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth forms; Sinflorescences; Profileration; Phyllotaxis; Paraclades; Branching system.
Ano: 2014
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722014000300005

Growth habit effect on development of modern soybean cultivars after beginning of bloom in Rio Grande do Sul
Provedor de dados: 53
Autores: Zanon,Alencar Junior; Streck,Nereu Augusto; Rocha,Thiago Schmitz Marques da; Alberto,Cleber Maus; Bartz,Alex Cristiano; Paula,Gizelli Moiano de; Tomiozzo,Regina; Costa,Liege Camargo da; Fensterseifer,Cesar Augusto; Tagliapietra,Eduardo Lago; Cardoso,Ânthony Paz; Weber,Patric Scolari; Bexaira,Kelin Pribs.
ABSTRACT There was a change in the genetics of soybeans grown in southern Brazil from the 2000s, which requires investment in basic and detailed studies about growth and development. The purpose in this paper was to characterize the overlap period of vegetative and reproductive phases, growth in height and the emission of nodes after the beginning of flowering in determinate and indeterminate cultivars in different sowing dates and soybean regions in Rio Grande do Sul. Field experiments were conducted during the growing seasons of 2012/2013 and 2013/2014, in Santa Maria, Itaqui, Frederico Westphalen, Capão do Leão, Júlio de Castilhos and in 3 commercial soybean crops in Restinga Sêca, Tupanciretã and Água Santa. Overlap determination (in days) of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Determinate; Indeterminate; Maturity group.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000400445

Nitrogen for growth of stock plants and production of strawberry runner tips
Provedor de dados: 53
Autores: Janisch,Djeimi Isabel; Andriolo,Jerônimo Luiz; Toso,Vinícius; Santos,Kamila Gabriele Ferreira dos; Souza,Jéssica Maronez de.
The objective of this research was to determine growth and dry matter partitioning among organs of strawberry stock plants under five Nitrogen concentrations in the nutrient solution and its effects on emission and growth of runner tips. The experiment was carried out under greenhouse conditions, from September 2010 to March 2011, in a soilless system with Oso Grande and Camino Real cultivars. Nitrogen concentrations of 5.12, 7.6, 10.12 (control), 12.62 and 15.12 mmol L-1 in the nutrient solution were studied in a 5x2 factorial randomised experimental design. All runner tips bearing at least one expanded leaf (patent requested) were collected weekly and counted during the growth period. The number of leaves, dry matter (DM) of leaves, crown and root,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fragaria x ananassa; Hydroponics; Propagation; Fertigation.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052012000300012

Growth and Immune Response of Pangasius hypophthalmus Fed Diets Containing Seaweed Extracts as Immunostimulant
Provedor de dados: 52
Autores: Baleta,Francis Nuestro; Bolaños,Jonathan Mallillin.
Abstract Growth and immune response of Pangasius hypophthalmus were evaluated after feeding the fish with diets containing hot-water extracts (HWE) of Sargassum oligocystum as immunostimulant at 100, 300, and 500 mg kg-1 diet. Basal diet for P. hypophthalmus served as the control. The experimental diets were administered for 12 weeks. At the end of the feeding experiment, growth and haematological profile of fish were evaluated. Result showed that final weight, weight gain, daily growth rate and feed conversion ratio were significantly increased in the fish that received 300 and 500 mg kg-1 HWE of S. oligocystum. Evaluation of the haematological profile showed that white blood cells red blood cells, hemoglobin, hematocrit and platelet of P. hypophthalmus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth performance; Hot water extract; Pangasius hypophthalmus; Sargassum oligocystum.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100432

Effects of light on the growth and photosynthesis of Egeria najas planchon
Provedor de dados: 52
Autores: Tavechio,Washington Luiz Gomes; Thomaz,Sidinei Magela.
Photosynthesis and growth of Egeria najas (Hydrocharitaceae) from a subtropical reservoir (Itaipu Reservoir, Brazil-Paraguay) were measured in response to low light intensities (0-124 µM m-2 s-1 PAR) in the laboratory. Photosynthesis approached saturation in the range of light intensities used and light compensation point was reached at ca. 6-22 µM m-2 s-1 PAR, indicating that this species had a low light requirement for growth. Light stimulated shoot and root relative growth rates (RGR) but it was not related to ratios between root:shoot RGR. Laboratory observations indicated that (i) both shoot and root growth were simultaneously stimulated by light and (ii) the low light requirements of E. najas may explain its incidence in the Itaipu Reservoir, where...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egeria najas; Photosynthesis; Growth; Light compensation point; Rooted macrophytes.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000200011

In vitro Antimicrobial Assay of Actinomycetes in Rice AgainstXanthomonas oryzae pv. oryzicola and as Potential Plant Growth Promoter
Provedor de dados: 52
Autores: Hata,Erneeza Mohd; Sijam,Kamaruzaman; Ahmad,Zainal Abidin Mior; Yusof,Mohd Termizi; Azman,Noor Aisyah.
ABSTRACT The aim of this work was to invitro assay the antimicrobial activity of actinomycetes in rice against Xanthomonas oryzae pv. oryzicola and as potential plant growth promoter. A total of 92 actinomycete strains were isolated from different rice plant components and field locations. Of these, only 21.74% showed antagonistic activity against the Xoc pathogen. Molecular identification via 16s rRNA amplification revealed that 60% of the active antagonistic strains belonged to the genus Streptomyces. Isolates that demonstrated the highest antagonistic activity were also able to produce hydrolytic enzymes and plant growth-promoting hormones. Combination of preliminary screening based on in vitro antagonistic, hydrolytic enzyme and plant growth hormone...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antagonistic activity; Hydrolytic enzyme; Plant growth-promoting agent; Streptomyces.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000600821

Influence of pH on the growth, laccase activity and RBBR decolorization by tropical basidiomycetes
Provedor de dados: 52
Autores: Moreira Neto,Sérgio Luiz; Matheus,Dácio Roberto; Machado,Kátia Maria Gomes.
The basidiomycete fungi Lentinus crinitus and Psilocybe castanella are being evaluated in a bioremediation process of soils contaminated with organochlorine industrial residues in the Baixada Santista, São Paulo. The aim of the present study was to determine the influence of pH on the fungal growth, in vitro decolorization of anthraquinonic dye Remazol Brilliant Blue R (RBBR) and laccase activity. The pH of the culture medium influenced the growth of L. crinitus and P. castanella, which presented less growth at pH 5.9 and pH 2.7, respectively. The fungi were able to modify the pH of the culture medium, adjusting it to the optimum pH for growth which was close to 4.5. Decolorization of the RBBR was maximal at a pH of 2.5 to 3.5. Higher laccase activity was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: White rot fungi; RBBR; Laccase; Peroxidases.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000500003

Relative growth of Petrochirus diogenes (Linnaeus, 1758) (Crustacea, Anomura, Diogenidae) in the Ubatuba region, São Paulo, Brazil
Provedor de dados: 57
Autores: BERTINI,G.; FRANSOZO,A.
The purpose of this paper is to investigate the relative growth and heterochely in the hermit crab Petrochirus diogenes. Hermit crabs were collected in the Ubatuba region, SP, from 1993 to 1996; using a commercial fishing boat equipped with two double-rig nets. Body mass of each individual was weighed and their cephalothoracic shield and chelar propodus size were measured. Body mass and chelar propodus size were regarded as dependent variables and plotted against length of cephalothoracic shield according to the allometric equation y = a.x b. A total of 479 individuals were obtained being 307 males and 172 females. Cephalothoracic shield width follows an isometric growth for both sexes. Otherwise, right cheliped dimensions show different relative growth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Relative growth; Hermit crab; Petrochirus; Diogenidae.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081999000400011

Predictive modeling of Pseudomonas fluorescens growth under different temperature and pH values
Provedor de dados: 58
Autores: Gonçalves,Letícia Dias dos Anjos; Piccoli,Roberta Hilsdorf; Peres,Alexandre de Paula; Saúde,André Vital.
Abstract Meat is one of the most perishable foods owing to its nutrient availability, high water activity, and pH around 5.6. These properties are highly conducive for microbial growth. Fresh meat, when exposed to oxygen, is subjected to the action of aerobic psychrotrophic, proteolytic, and lipolytic spoilage microorganisms, such as Pseudomonas spp. The spoilage results in the appearance of slime and off-flavor in food. In order to predict the growth of Pseudomonas fluorescens in fresh meat at different pH values, stored under refrigeration, and temperature abuse, microbial mathematical modeling was applied. The primary Baranyi and Roberts and the modified Gompertz models were fitted to the experimental data to obtain the growth parameters. The Ratkowsky...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Meat; Deterioration; Modeling.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200352

Biodegradation of kerosene: Study of growth optimization and metabolic fate of P. janthinellum SDX7
Provedor de dados: 58
Autores: Khan,Shamiyan R.; Nirmal,J.I. Kumar; Kumar,Rita N.; Patel,Jignasha G.
Penicillum janthinellum SDX7 was isolated from aged petroleum hydrocarbon-affected soil at the site of Anand, Gujarat, India, and was tested for different pH, temperature, agitation and concentrations for optimal growth of the isolate that was capable of degrading upto 95%, 63% and 58% of 1%, 3% and 5% kerosene, respectively, after a period of 16 days, at optimal growth conditions of pH 6.0, 30 °C and 180 rpm agitation. The GC/MS chromatograms revealed that then-alkane fractions are easily degraded; however, the rate might be lower for branched alkanes, n-alkylaromatics, cyclic alkanes and polynuclear aromatics. The test doses caused a concentration-dependent depletion of carbohydrates of P. janthinellum SDX7 by 3% to 80%, proteins by 4% to 81% and amino...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Penicillum janthinellum SDX7; Optimal growth; Metabolites; Kerosene degradation.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000200397

Bacterial exopolysaccharide and biofilm formation stimulate chickpea growth and soil aggregation under salt stress
Provedor de dados: 58
Autores: Qurashi,Aisha Waheed; Sabri,Anjum Nasim.
To compensate for stress imposed by salinity, biofilm formation and exopolysaccharide production are significant strategies of salt tolerant bacteria to assist metabolism. We hypothesized that two previously isolated salt-tolerant strains Halomonas variabilis (HT1) and Planococcus rifietoensis (RT4) have an ability to improve plant growth, These strains can form biofilm and accumulate exopolysacharides at increasing salt stress. These results showed that bacteria might be involved in developing microbial communities under salt stress and helpful in colonizing of bacterial strains to plant roots and soil particles. Eventually, it can add to the plant growth and soil structure. We investigated the comparative effect of exopolysacharide and biofilm formation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biofilm; Cicer arietinum; Exopolysaccharide; Salinity; Soil aggregates.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000300046

In vitro antagonistic growth effects of Lactobacillus fermentum and Lactobacillus salivarius and their fermentative broth on periodontal pathogens
Provedor de dados: 58
Autores: Chen,Ling-Ju; Tsai,Hsiu-Ting; Chen,Wei-Jen; Hsieh,Chu-Yang; Wang,Pi-Chieh; Chen,Chung-Shih; Wang,Lina; Yang,Chi-Chiang.
As lactobacilli possess an antagonistic growth property, these bacteria may be beneficial as bioprotective agents for infection control. However, whether the antagonistic growth effects are attributed to the lactobacilli themselves or their fermentative broth remains unclear. The antagonistic growth effects of Lactobacillus salivarius and Lactobacillus fermentum as well as their fermentative broth were thus tested using both disc agar diffusion test and broth dilution method, and their effects on periodontal pathogens, including Streptococcus mutans, Streptococcus sanguis, and Porphyromonas gingivalisin vitro at different concentrations and for different time periods were also compared. Both Lactobacillus salivarius and Lactobacillus fermentum and their...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactobacillus fermentum; Lactobacillus salivarius; Streptococcus mutans; Streptococcus sanguis; Porphyromonas gingivalis; Periodontitis.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000400019

Morphological changes and growth of filamentous fungi in the presence of high concentrations of PAHs
Provedor de dados: 58
Autores: Zafra,German; Absalón,Angel E.; Cortés-Espinosa,Diana V.
In this study, we evaluated the effect of low and high molecular weight polycyclic aromatic hydrocarbons (PAHs), i.e., Phenanthrene, Pyrene and Benzo[a]pyrene, on the radial growth and morphology of the PAH-degrading fungal strains Aspergillus nomius H7 and Trichoderma asperellum H15. The presence of PAHs in solid medium produced significant detrimental effects on the radial growth of A. nomius H7 at 4,000 and 6,000 mg L−1 and changes in mycelium pigmentation, abundance and sporulation ability at 1,000–6,000 mg L−1. In contrast, the radial growth of T. asperellum H15 was not affected at any of the doses tested, although sporulation was observed only up to 4,000 mg L−1 and as with the H7 strain, some visible changes in sporulation patterns and mycelium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Polycyclic aromatic hydrocarbons (PAHs); Bioremediation; Radial growth; Sporulation; Fungal physiology.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000300937

Industrial wastewater as raw material for exopolysaccharide production by Rhizobium leguminosarum
Provedor de dados: 58
Autores: Sellami,Mohamed; Oszako,Tomasz; Miled,Nabil; Ben Rebah,Faouzi.
The objective of this study was to evaluate the exopolysaccharide (EPS) production by Rhizobium leguminosarum cultivated in wastewater generated by oil companies (WWOC1 and WWOC2) and fish processing industry (WWFP). The results obtained in Erlenmeyer flasks indicated that the rhizobial strain grew well in industrial wastewater. Generally, wastewater composition affected the growth and the EPS production. WWFP allowed good bacterial growth similar to that obtained with the standard medium (YMB). During growth, various quantities of EPS were produced and yields varied depending on the media. Growing in YMB, EPS production did not exceed 9.7 g/L obtained after 72 h of growth. In wastewater, the maximum EPS value reached 11.1 g/L obtained with the fish...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Industrial wastewater; Biopolymer; Exopolysaccharide; Rhizobium.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000200407

Rhizosphere competent Mesorhizobiumloti MP6 induces root hair curling, inhibits Sclerotinia sclerotiorum and enhances growth of Indian mustard (Brassica campestris)
Provedor de dados: 58
Autores: Chandra,Shikha; Choure,Kamlesh; Dubey,Ramesh C.; Maheshwari,Dinesh K.
The bacterial strain Mesorhizobium loti MP6, isolated from root nodules of Mimosa pudica induced growth and yield of Brassica campestris. The isolate MP6 secreted hydroxamate type siderophore in Chrom-Azurol Siderophore (CAS) agar medium. Production of hydrocyanic acid (HCN), indole acetic acid (IAA) and phosphate solubilizing ability was also recorded under normal growth conditions. Root hair curling was observed through simple glass-slide technique. In vitro study showed a significant increase in population of M. loti MP6 in rhizosphere due to root exudates of B. campestris. In dual culture technique the strain showed a strong antagonistic effect against Sclerotinia sclerotiorum, a white rot pathogen of Brassica campestris. The growth of S. sclerotiorum...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biocontrol; Plant growth promoting rhizobacteria; Seed bacterization; White rot; Mesorhizobium loti; Brassica campestris.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000100026

Isolation, properties and kinetics of growth of a thermophilic Bacillus
Provedor de dados: 58
Autores: Souza,Adriane Nunes de; Martins,Meire Lelis Leal.
A strictly aerobic, thermophilic, spore-forming bacteria was isolated from a soil sample collected in Campos dos Goytacazes City, Rio de Janeiro, Brazil. The cells of this organism were Gram-positive, catalase positive, actively motile, 1.2 µm wide and 5.3 µm long. Growth occurred at pH values ranging from 6.5 to 9.0, and optimum growth occurred at about pH 7.0. The optimum temperature for growth was around 55ºC, and the upper temperature limit for growth was around 70ºC. Yeast extract stimulated growth on glucose and was obligately required at supraoptimal temperatures (65ºC). The results of 16S rRNA sequence comparisons indicated that the isolate was closely related to Bacillus caldoxylolyticus and Bacillus sp strain AK1, and these three organisms...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Thermophilic microorganism; Bacillus; Isolation.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000400003

Optimization of nutritional requirements for mycelial growth and sporulation of entomogenous fungus Aschersonia aleyrodis Webber
Provedor de dados: 58
Autores: Zhu,Yanping; Pan,Jieru; Qiu,Junzhi; Guan,Xiong.
The objective of the present study was to investigate the optimal nutritional requirements for mycelial growth and sporulation of entomopathogenic fungus Aschersonia aleyrodis Webber by orthogonal layout methods. Herein the order of effects of nutrient components on mycelial growth was tryptone &gt; Ca2+ &gt; soluble starch &gt; folacin, corresponding to the following optimal concentrations: 1.58% Soluble Starch, 3.16% Tryptone, 0.2 mmol l-1 Ca2+ and 0.005% Folacin. The optimal concentration of each factors for sporulation was 1.16% lactose, 0.394% tryptone, 0.4 mmol l-1 Fe2+ and 0.00125% V B1, and the effects of medium components on sporulation were found to be in the order lactose &gt; V B1 &gt; Fe2+ &gt; tryptone. Under the optimal culture conditions,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Entomogenous fungus; Orthogonal matrix method; Mycelial growth; Sporulation.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000400032

Comparative growth of trichoderma strains in different nutritional sources, using bioscreen c automated system
Provedor de dados: 58
Autores: Rossi-Rodrigues,Bianca Caroline; Brochetto-Braga,Márcia Regina; Tauk-Tornisielo,Sâmia Maria; Carmona,Eleonora Cano; Arruda,Valeska Marques; Chaud Netto,José.
Trichoderma is one of the fungi genera that produce important metabolites for industry. The growth of these organisms is a consequence of the nutritional sources used as also of the physical conditions employed to cultivate them. In this work, the automated Bioscreen C system was used to evaluate the influence of different nutritional sources on the growth of Trichoderma strains (T. hamatum, T. harzianum, T. viride, and T. longibrachiatum) isolated from the soil in the Juréia-Itatins Ecological Station (JIES), São Paulo State - Brazil.The cultures were grown in liquid culture media containing different carbon- (2%; w/v) and nitrogen (1%; w/v) sources at 28ºC, pH 6.5, and agitated at 150 rpm for 72 h. The results showed, as expected, that glucose is...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioscreen C system; Growth; Trichoderma; Tryptone; Yeast extract.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000200035

Effects of phosphorus on polyphosphate accumulation by Cunninghamella elegans
Provedor de dados: 58
Autores: Lima,Marcos Antonio Barbosa de; Nascimento,Aline Elesbão do; Souza,Wanderley de; Fukushima,Kazutaka; Campos-Takaki,Galba Maria de.
The content of inorganic polyphosphate and the polymeric degree of these compounds were evaluated during the growth of Cunninghamella elegans in medium containing varying orthophosphate (Pi) concentrations. For this purpose, a combination of chemical methods for polyphosphate extraction and ultrastructural cytochemistry were used. The orthophosphate and glucose consumption was also determined during the fungal cultivation. At Pi concentrations of 0.5, 2.5 and 0.0 g/L, the maximum amounts of biomass were 3.18, 3.29 and 0.24 g/L, respectively. During growth the cells accumulated Pi from the medium. At three days of growth the biomass consumed up to 100 and 95% of Pi from the media at initial concentrations of 0.5 and 2.5 g/L, respectively. Polyphosphate was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Polyphosphate; Accumulation; Ultrastructural cytochemistry; Cunninghamella elegans; Ortophosfate.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000400016

Action of nisin and high pH on growth of Staphylococcus aureus and Salmonella sp. in pure culture and in the meat of land crab (Ucides cordatus)
Provedor de dados: 58
Autores: Grisi,Teresa Cristina S. de Lima; Gorlach-Lira,Krystyna.
The aim of this study was to evaluate the potential of nisin and high pH to inhibit the growth of Staphylococcus aureus and Salmonella sp. in broth culture and when inoculated into meat of land crab. In pure cultures, the growth of S. aureus was bly inhibited by nisin and the growth of Salmonella sp. was inhibited by nisin-EDTA (20 mM). The inhibition of S. aureus lasted for eight hours and Salmonella sp. growth was inhibited throughout the experiment (24 h). The high pH (pH 10.0 and 11.0 with NaHCO3-NaOH buffer) was very effective for in vitro inhibition of S. aureus and Salmonella sp. Nisin and high pH, when applied to the contaminated meat, did not yield the same effect. Nisin was not effective in preventing growth of both pathogens in the crab meat,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crab meat; Nisin; High pH; Staphylococcus aureus; Salmonella sp.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822005000200010

Vegetative responses to temperature and photoperiod in saplings of brazilwood (Caesalpinia echinata Lam., Leguminosae)
Provedor de dados: 61
Autores: Rondon,Josimara N.; Zaidan,Lilian B.P.; Domingos,Marisa; Barbedo,Claudio J.; Figueiredo-Ribeiro,Rita de Cássia L.
Caesalpinia echinata Lam. (brazilwood) is an endangered tree species occurring along the eastern coast of Brazil from latitudes 5°56´S to 22°56´S. With such a range of distribution it is expected that temperature and daylength may affect plant development, which was examined in this study. One- and five-year-old saplings were grown under controlled photoperiods of 8 h, 12 h and 20 h, and in a greenhouse under natural light during 16 months. In another experiment, one-year-old saplings were cultivated for six months in a growth cabinet, with reduced maximum temperature, and in the greenhouse. Leaf number, stem height and stem diameter at the soil surface were evaluated every two months (experiment 1) or every month (experiment 2). In experiment 1, no...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic forest; Endangered species; Tree growth.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202006000400004

Growth and photosynthetic responses of Picea asperata seedlings to enhanced ultraviolet-B and to nitrogen supply
Provedor de dados: 61
Autores: Yao,Xiaoqin; Liu,Qing; Han,Chao.
Ultraviolet-B (UV-B) radiation and nitrogen are expected to increase simultaneously with future changes in global climate. In this study, growth and photosynthetic responses of Picea asperata seedlings to enhanced UV-B and to nitrogen supply were studied. The experimental design included two levels of UV-B treatments (ambient UV-B, 11.02 kJ m-2 d-1; enhanced UV-B, 14.33 kJ m-2 d-1) and two nitrogen levels (0; 20 g N m-2) to determine whether nitrogen can alleviate the negative impacts of enhanced UV-B on seedling growth and photosynthesis. Enhanced UV-B significantly inhibited plant growth and impaired net photosynthetic rate, stomatal conductance, transpiration rate, the light-saturated assimilation rate, assimilation capacity, light compensation point,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth; Gas exchange; Nitrogen; Picea asperata; Photosynthesis; UV-B.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202008000100002

Effects of light and ethylene on endogenous hormones and development of Catasetum fimbriatum (Orchidaceae)
Provedor de dados: 61
Autores: Suzuki,Rogério M.; Kerbauy,Gilberto B.
This study attempted to clarify the effects of dark, light and ethylene on plant growth and endogenous levels of indole-3-acetic acid (IAA), cytokinins and abscisic acid in Catasetum fimbriatum. Dark-incubation fully inhibited root and pseudobulb formation as well as leaf growth, but favored shoot elongation. The results of continuous and active growth in dark-incubated shoots (stolons) were induced by strong apical meristem sink activity and by the significantly increased levels of cytokinins in shoots. In fact, shoot length, cytokinin and IAA levels in dark-incubated shoots were about twice as great as for those grown under light conditions. Moreover, the total cytokinin level in shoots of C. fimbriatum under light conditions without ethylene was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Auxin; Cytokinins; Etiolation; Plant growth; Plant hormones.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202006000300002

Exploring the Potential use of Photo-Selective Nets for Fruit Growth Regulation in Apple
Provedor de dados: 117
Autores: Bastías,Richard M; Manfrini,Luigi; Corelli Grappadelli,Luca.
The effect of shading (i.e. reduction of sunlight availability) on fruit growth physiology has been widely studied in apple (Malus domestica Borkh.), but little knowledge exist about fruit growth responses to changes in the light spectrum. The aim of the present research was to study the effect of use of colored nets with differential sunlight transmission in the blue (B, 400-500 nm), red (R, 600-700 nm) and far-red (FR, 700-800 nm) spectra on apple fruit growth and physiological associated responses. Three year old 'Fuji' apple trees were covered with 40% photo-selective blue and red shade nets, 40% neutral grey shade net, and 20% neutral white net as control. Red and blue net reduced in the same proportion (27%) the photosynthetically active radiation...
Tipo: Journal article
Palavras-chave: Sunlight spectrum management; Fruit size; Photosynthesis; Morphogenesis.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000200010

Effects of the foliar application of methanol on the yield and growth of rice (Oryza sativa cv. Shiroudi)
Provedor de dados: 118
Autores: Abbasian,Abouzar; Mirshekari,Bahram; Safarzade Vishekaei,Mohammad N; Rashidi,Varahram; Aminpanah,Hashem.
Effects of the foliar application of methanol on the yield and growth of rice (Oryza sativa cv. Shiroudi). Cien. Inv. Agr. 43(1):17-24. Approximately two decades have passed since it was reported that the foliar application of methanol increased plant biomass and yield. Many subsequent reports have been published concerning the ability or inability to reproduce these initial observations. To evaluate the effect of methanol on rice (Oryza sativa cv. Shiroudi) yield and rice components, a field experiment was conducted at the Tonekabon Rice Research Station in Iran in 2012 and 2013. The experiment had a randomized complete block design (RCBD) with three replicates. The plants were treated with aqueous methanol solutions (0, 6, 12, 18, and 24% (v/v))....
Tipo: Journal article
Palavras-chave: Aqueous methanol solution; Correlation; Glycine; Grain yield; Growth; Rice; Tween 80 as a surfactant.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000100002

Early individual growth of Eucryphia cordifolia and Laurelia sempervirens planted under different competition conditions in south-central Chile
Provedor de dados: 118
Autores: Uteau,Daniel; Donoso,Pablo J.
Few studies have focused on forest research in plantations with Chilean native species midtolerant to shade. Such species may use resources that intolerant species cannot, increasing the total site productivity. This study aimed to define the factors that explain the growth of Euctyphia cordifolia Cav. and Laurelia sempervirens (Ruiz et Pavón) Tul., two midtolerant species of southern Chile. We sought to determine the effect on these species of competition in mixed-species plantations. At the time of this study, the plantations were 4 to 22 years old . Two competition indices were analyzed for each species: the Growing Space Polygon (GSP) and the Canopy Overlap (CO). The GSP proved to be very useful in predicting the growth in the older plantations where...
Tipo: Journal article
Palavras-chave: Competitionindex; Forest; Growth; Growing space polygon; Crown competition; Midtolerant species; Silviculture.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202009000100008

A mathematical model for growth in weight of silver catfish (Rhamdia quelen) (Heptapteridae, Siluriformes, Teleostei)
Provedor de dados: 65
Autores: Benaduce,Ana Paula da Silva; Rodrigues,Luiz Alberto Díaz; Mistro,Diomar Cristina; Baldisserotto,Bernardo.
The use of a mathematical model applied to biological science helps to predict the specific data. Based on biological data (weight and age) of silver catfish, Rhamdia quelen, a mathematical model was elaborated based on a nonlinear difference equation to demonstrate the relationship between age and growth in weight. Silver catfish growth was described following the Beverton-Holt model Pt+1 = (r Pt) / (1+ a Pt ), where r &gt; 0 is the maximum growth rate and a &gt; 0 is a constant of growth inhibition. The solution of this equation is Pt= 1 /{[1/P0 - a / (r-1)] 1/r t + a/ (r-1)}, were P0 is the initial weight of the fish. Through this model it was observed that the female reaches the theoretical maximum weight approximately at the age of 18 years and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nonlinear difference equation; Teleost; Weight-at-age; Growth.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782006000500042

Nonlinear modeling growth body weight of Mangalarga Marchador horses
Provedor de dados: 65
Autores: Souza,Felipe Amorim Caetano; Fernandes,Tales Jesus; Moura,Raquel Silva de; Meirelles,Sarah Laguna Conceição; Ribeiro,Rafaela Aparecida; Cunha,Fabiana Oliveira; Muniz,Joel Augusto.
ABSTRACT: The analysis of the growth and development of various species has been done using the growth curves of the specific animal based on non-linear models. The objective of the current study was to evaluate the fit of the Brody, Gompertz, Logistic and von Bertalanffy models to the cross-sectional data of the live weight of the MangalargaMarchador horses to identify the best model and make accurate predictions regarding the growth and maturity in the males and females of this breed. The study involved recording the weight of 214 horses, of which 94 were males and 120 were non-pregnant females, between 6 and 153 months of age. The parameters of the model were estimated by employing the method of least squares, using the iteratively regularized...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Age; Body weight; Cross-sectional method; Statistical models.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400657

Adjusting the growth curve of sugarcane varieties using nonlinear models
Provedor de dados: 65
Autores: Jane,Sérgio Alberto; Fernandes,Felipe Augusto; Silva,Edilson Marcelino; Muniz,Joel Augusto; Fernandes,Tales Jesus; Pimentel,Guilherme Vieira.
ABSTRACT: Assessing sugarcane (Saccharum spp.) stalk growth helps to adequately manage the phenological stages of the crop. The aim of this study was to describe the height-growth curve of four sugarcane varieties (RB92579, RB93509, RB931530 and SP79-1011), in irrigated plant-cane and ratoon cane plantations, using the Logistic and Gompertz nonlinear models, while considering all deviations from assumptions. The model parameters were estimated based on the least squares method using the Gauss-Newton algorithm. To select the most suitable model, nonlinear measures, adjusted coefficient of determination (R2 adj), residual standard deviation (RSD), and corrected Akaike information criterion (AICc) were used. Based on the best models, stalk height growth rates...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Logistic model; Gompertz model; Growth rates.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000300204

Effects of one haustorium-inducing quinone DMBQ on growth and development of root hemiparasitic plant Monochasma savatieri
Provedor de dados: 65
Autores: Chen,Lanlan; Zhu,Zaibiao; Guo,Qiaosheng; Guo,Jun; Huang,Zhigang; Shi,Yongtao; Wen,Zhencui.
ABSTRACT: Monochasma savatieri Franch. ex Maxim is a perennial, parasitic herb used in traditional Chinese medicine and its wild resources have decreased sharply in recent years due to destructively harvesting and habitat destruction. Haustorium formation is a key event of parasites, but the concentrations of haustorium-inducing factors vary with species and cultivation conditions. In this study, we investigated the effects of the 2,6-dimethoxy-p-benzoquinone (DMBQ) concentration and cultivation density on the growth traits, haustorium formation and biomass of M. savatieri in the absence of a host plant. The results showed that both the DMBQ concentration and cultivation density regulated growth traits, haustorium formation and biomass in M. savatieri. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artificial cultivation; Density; DMBQ; Fuzzy membership function; Growth promotion.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000300202

Growth retardants in wheat and its effect in physiological quality of seeds
Provedor de dados: 65
Autores: Souza,Leandro Torres de; Espíndula,Marcelo Curitiba; Rocha,Valterley Soares; Dias,Denise Cunha Fernandes dos Santos; Souza,Moacil Alves de.
Plant lodging in wheat has been controlled through growth retardants. However, there is lack of information on the effect of these products on the physiological quality of seeds. The objective of this study was to evaluate the physiological quality of wheat seeds obtained under different rates and application times of three growth retardants. The trial was carried out in Viçosa-MG, from May to September 2005, in a factorial and hierarchical scheme, in randomized block design with four replications and a control treatment. The treatments consisted of 500, 1000 and 1500g ha-1 of chlormequat; 40, 80 and 120g ha-1 of paclobutrazol and 62.5, 125 and 187.5g ha-1 of trinexapac-ethyl applied at the 6 or 8 growth stage based on the scale of Feeks and Large, and a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum; Chlormequat; Paclobutrazol; Trinexapac-ethyl; Germination and vigor.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000600031

Growth and development of soybean roots according to planting management systems and irrigation in lowland areas
Provedor de dados: 65
Autores: Sartori,Gerson Meneghetti Sarzi; Marchesan,Enio; David,Ricardo De; Nicoloso,Fernando Teixeira; Schorr,Márcio Renan Weber; Filho,Alberto Cargnelutti; Donato,Gabriel.
ABSTRACT: The presence of a compacted soil layer near the ground surface in paddy fields may limit the growth and development of soybean roots. The objective of this study was to evaluate different planting management systems and irrigation on growth and development of soybean root systems in lowland area. The experiment was carried out in 2013/14 and 2014/15 crop seasons in randomized complete block design with factorial treatment (3x2), with four replications. The treatments consisted of different planting management systems: sowing with double disc (A1); sowing with shank (A2) and deep tillage + sowing with double disc (A3), and irrigation: irrigated (D1) and non irrigated (D2). Planting management systems and irrigation influenced the growth of soybean...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max L.; Compacted layer; Shank; Deep tillage; Root system.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000901572

Culture and growth of two benthic diatoms species isolated from the Salar del Huasco (North of Chile, 20° S) at different conditions of temperature, light and nutrient
Provedor de dados: 73
Autores: RAMÍREZ,EIMMY E.; GONZÁLEZ,MARIELA A.; CIFUENTES,ANA S.; INOSTROZA,INGRID; URRUTIA,ROBERTO E.
Benthic diatoms are cultured usually under laboratory conditions to be used as a food source for other organisms, of aquaculture interest or for biotechnological applications. Laboratory experiments demonstrate the incidence of the physical and chemical variables on abundance and growth rates of diatoms. While macronutrients are usually selected and dosed into common culture mediums to meet the general requirements of a wide range of diatoms, the availability and optimization of micronutrients are more susceptible to each organism&amp;#8217;s particular physiological conditions. The aim of this study was to characterize the growth of two species of benthic diatoms isolated from the Salar de Huasco in batch cultures at different conditions of temperature...
Tipo: Journal article
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432015000200001

Performances de croissance de l'huître creuse, Crassostrea gigas (Thunberg) dans le bassin d'élevage de Marennes-Oléron entre 1979 &amp; 1982
Provedor de dados: 5
Autores: Berthome, Jean-paul; Prou, Jean; Bodoy, Alain.
Growth of the japanese oyster, Crassostrea gigas was monitored during 4 years, by following the recruitment of the year 1978, held in rearing conditions. After three and half years, the average length was la cm and the average total weight was 80 g. Clear seasonal changes were observed on the growth in length and weight.  An  important loss in dry weight occured in July, during the release of gametes. Such losses constituted 29 %, 43 % and 60 % of the dry weight, respectively for individuals which were 2 years, 3 years and 4 years old. The higher instantaneous growth rates  (G) were observed during spring and at the beginning of summer. Growth model of Von Bertalanffy, gave the best estimate for the length growth of the species. During the 1979-1982...
Tipo: Text
Palavras-chave: Growth parameter; Growth model; Reardd stock; Crassostrea gigas; Oyster; Growth; Descripteurs de croissance; Modèle de croissance; Stock cultivé; Crassostrea gigas; Huître; Croissance.
Ano: 1986
URL: http://archimer.ifremer.fr/doc/1986/publication-2967.pdf

Phenotype plasticity, local adaptation, and biofouling influence on growth of the pearl oyster Pinctada margaritifera: A common garden approach
Provedor de dados: 5
Autores: Hulot, V.; Saulnier, Denis; Latchere, O.; Maihota, N.; Gaertner-mazouni, N.
The purpose of our study is to investigate (1) the influence of phenotype plasticity and local adaptation on pearl-oyster physiology by testing the persistence of growth differentiation of two pearl oyster populations (Arutua and Mangareva) in common garden experiment; (2) to quantify the influence of biofouling development on the growth of each pearl oyster population. According to our observations, the growth rate in terms of total oyster weight suggested better growth performance of the pearl oyster Pinctada margaritifera in Mangareva (0.21–0.24 ± 0.01 g.day−1) than Arutua (0.14–0.15 ± 0.01 g.day−1). However, similar growth performances are observed at the Vairao common garden site for oyster stocks from Mangareva (0.07 ± 0.01 mm.day−1 or...
Tipo: Text
Palavras-chave: Pearl oyster; Growth performance; Biofouling; Endogenous factor; Environmental factor; Common garden experiment.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00507/61866/65934.pdf

Comparing growth in surface and cave morphs of the species Astyanax mexicanus: insights from scales
Provedor de dados: 5
Autores: Simon, Victor; Elleboode, Romain; Mahe, Kelig; Legendre, Laurent; Ornelas-garcia, Patricia; Espinasa, Luis; Retaux, Sylvie.
Background Life in the darkness of caves is accompanied, throughout phyla, by striking phenotypic changes including the loss or severe reduction in eyes and pigmentation. On the other hand, cave animals have undergone constructive changes, thought to be adaptive, to survive in this extreme environment. The present study addresses the question of the evolution of growth in caves, taking advantage of the comparison between the river-dwelling and the cave-dwelling morphs of the Mexican tetra, Astyanax mexicanus. Results A sclerochronology approach was undertaken to document the growth of the species in these two very distinct habitats. Scales from 158 wild Astyanax mexicanus specimens were analyzed from three caves (Pachón, Tinaja and Subterráneo) and two...
Tipo: Text
Palavras-chave: Cave; Fish; Size; Age; Scales; Growth; Food; Comparative biology; Life history traits.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00412/52337/53124.pdf

Typology of individual growth in sea bass (Dicentrarchus labrax)
Provedor de dados: 5
Autores: Gardeur, J; Lemarie, Gilles; Coves, Denis; Boujard, Thierry.
The individual growth variability of passive integrated transponder tagged sea bass was studied using data sets from two different experiments. In experiment 1 (n = 485), fish submitted to different photoperiod regimes were held in fourteen groups of individual weight of 88 ± 13 g (mean ± SD). In experiment 2 (n = 748, initial weight 243 ± 30 g) fish were held in fifteen groups and had either free or restricted access to diets with three lipid levels. After adjustment for treatment and tank effects, individual growth curves were analysed using multivariate analysis (principal component analysis and clustering) and were modelled using the summary statistics technique. Different growth profiles where characterized. All of them appeared to be curvilinear....
Tipo: Text
Palavras-chave: Variability; Typology; Sea bass; Modelling; Growth curves; Variabilité; Typologie; Bar; Modélisation; Courbes de croissance.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/publication-548.pdf

Combined replacement of fish meal and oil in practical diets for fast growing juveniles of gilthead sea bream (Sparus aurata L.): Networking of systemic and local components of GH/IGF axis
Provedor de dados: 5
Autores: Benedito Palos, L; Saera Vila, A; Calduch Giner, J; Kaushik, Sadasivam; Perez Sanchez, J.
Growth performance and growth regulatory pathways were examined in juvenile gilthead sea bream fed diets containing largely plant-based ingredients. Four isonitrogenous and isolipidic extruded diets with a low level (20%) of fish meal inclusion were formulated with graded levels of a vegetable oil mixture (17:58:25 of rapeseed: linseed: palm oils) replacing fish oil at 33, 66 and 100% (33VO, 66VO and VO diets). All diets were supplemented with lysine (0.55%) and contained soy lecithin (1%). Daily growth coefficients and feed efficiency over the course of an 11-week trial were almost identical in fish fed the FO, 33VO and 66VO diets. The VO diet reduced feed intake and growth without significant effects in proximate whole body composition, nitrogen or...
Tipo: Text
Palavras-chave: Contaminants; Endocrine disrupters; Insulin like growth factors; Growth hormone receptors; Growth hormone; Plant proteins; Vegetable oil; Fish oil; Sparidae.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-5017.pdf

Effects of microalgal diet on growth, survival, biochemical and fatty acid composition of Ruditapes decussatus larvae
Provedor de dados: 5
Autores: Andres Aranda-burgos, Jose; Da Costa Gonzalez, Fiz; Novoa, Susana; Ojea, Justa; Martinez-patino, Dorotea.
Successful bivalve larval growth and survival depend on stored reserves provided by diet. The aim of this study was to evaluate the effects of microalgal diet on growth, survival, together with biochemical and fatty acid composition during larval development in grooved carpet shell (Ruditapes decussatus). Four mono- and multi-species diets were tested: (1) Isochrysis galbana, Pavlova lutheri and Chaetoceros muelleri (1:1:1, IPC); (2) I. galbana, P. lutheri and C. muelleri (1:1:2, IP2C); (3) I. galbana and P. lutheri (1:1, IP); (4) C. muelleri (C). Our results showed that feeding regime greatly influenced larval growth and survival, as well as biochemical and fatty acid composition. Higher growth and survival rates were observed in the IPC, IP2C and C...
Tipo: Text
Palavras-chave: Ruditapes; Decussatus; Larvae; Diets; Biochemistry; Fatty acids.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00161/27261/25470.pdf

Variabilidad Temporal De Los Parámetros Poblacionales De La Langosta Espinosa Del Caribe [Panulirus argus] (Latreille, 1804) En Aguas De Cuba
Provedor de dados: 20
Autores: de León González, María Estela.
ABSTRACT Temporal variability in the population parameters of the Caribbean spiny lobster Panulirus argus (Latreille, 1804) in Cuban waters Modifications in life-history traits are often concomitant with prolonged periods of exploitation or changes in the environment, producing changes in population abundance. . Both of them act as selective forces and could affect population parameters behaviour like growth rate, reproduction output, natural mortality rate and size at first maturity. Because of the economic importance of Caribbean spiny lobster (Panulirus argus) for Cuba and other countries of western central Atlantic, it is necessary to make a careful study in its life cycle processes and changes happened in temporal scale. Data used were obtained from...
Tipo: Theses and Dissertations
Palavras-chave: Growth; Natural mortality; Lobster culture; Growth; Http://aims.fao.org/aos/agrovoc/c_3394.
Ano: 2005
URL: http://hdl.handle.net/1834/1564

Growth and competition model for organic weed control
Provedor de dados: 21
Autores: Anon,.
There is a more detailed Executive Summary at the top of the attached document, which is the final report for Defra Project OF0177.  The project aimed to examine the organic extension of a simple mechanistically-based growth and competition model, calibrated to data originally gained from conventional vegetable production. Essentially the model simulation follows the growth of each crop and weed plant as they compete for space and light during and after canopy closure. The growth and competition model has been modified to simulate crop and weed growth of multiple cohorts so that the onset of crop weed competition can be predicted. This onset of competition marks the point when it is essential to remove weeds (i.e. critical weeding time); otherwise, there...
Tipo: Report
Palavras-chave: Weed management; Vegetables; Technology transfer.
Ano: 2002
URL: http://orgprints.org/7998/1/OF0177_2155_FRP.pdf

Economic Growth and Carbon Emission Control -A case study of power industry in China
Provedor de dados: 31
Autores: Zhang,   Zhenyu; Schoengold,   Karina.
Many countries have achieved moderate to dramatic growth  during the last few decades, and the world-widely continued economic growth results in increased wealth and deteriorated environment. The relationship between economic growth and environmental quality has received great attention in empirical and theoretical studies. But results are mixed: some find that economic development inevitably leads to environmental deterioration due to resource depletion and pollution, while others find that continued economic development helps to improve environmental quality. Further works are required in a specific context to answer the question whether environmental improvement is compatible with continued economic growth.  We intend to provide insight on the potential...
Tipo: Conference Paper or Presentation
Palavras-chave: Economic growth; Carbon emission control; Power generation; China; Environmental Economics and Policy.
Ano: 2009
URL: http://purl.umn.edu/49363

BANCOSOL: THE CHALLENGE OF GROWTH FOR MICROFINANCE ORGANIZATIONS
Provedor de dados: 31
Autores: Gonzalez-Vega,   Claudio; Schreiner,   Mark; Meyer,   Richard L.; Rodriguez-Meza,   Jorge; Navajas,   Sergio.
This paper focuses on the difficulties inherent in the prudent management of growth of microfinance organizations and on potential limits to the increased efficiency, profitability, and sustainability expected from growth and large size.  The paper addresses both positive and negative implications of rapid growth for microfinance organizations.  The experience of BancoSol in Bolivia is used to illustrate these questions. Building upon the successful experience of PRODEM, BancoSol was chartered as a private commercial bank in 1992.  The paper discusses the intangible assets inherited from PRODEM that gave BancoSol a head start and the additional advantages that resulted from formalization as a bank, in particular from the authorization to mobilize deposits....
Tipo: Working or Discussion Paper
Palavras-chave: Agricultural Finance.
Ano: 1996
URL: http://purl.umn.edu/28333

Demand Versus Supply of Foodgrains in India: Implications to Food Security
Provedor de dados: 31
Autores: Goyal,   S.K.; Singh,   J.P.
The present paper addresses the issues namely (i) the present food supply and the trend for future, (ii) shift in food consumption pattern over years and (iii) food demand projection for the next three decades in the context of food security. The analysis reveals that increase in cereal production (mainly rice and wheat) but decline in the percentage share of coarse grains and pulses in total foodgrains production is witnessed since 1960s. India’s total foodgrain production has increased at an annual growth rate of 2.68 per cent since 1960-61. The increase in foodgrain production is mainly due to increase in yield (growth rate being 2.44 per cent as against growth rate of area being 0.17 per cent per annum during 1960-61 to 1998-99). To project the future...
Tipo: Conference Paper or Presentation
Palavras-chave: Food Security and Poverty; Productivity Analysis.
Ano: 2002
URL: http://purl.umn.edu/6948

Agricultural Growth and Industrial Performance in India
Provedor de dados: 31
Autores: Rangarajan,   C.
In “The Role of Agriculture in Economic Development,” written nearly a quarter of a century ago, Bruce Johnston and I discussed the principal means by which agriculture could assist in transforming a traditional low-income economy in a modern high-income one. In the intervening years the literature and much of the practice of development has been dominated by either emphasis on industrialization, independent of agricultural development, or on agriculture as a provider of basic human needs, independent of commercialization and industrialization. Perhaps the time is ripe to pick up the old threads of a dynamic interaction between agriculture and industry. Those threads lead to a very specific strategy for development of agriculture itself in which...
Tipo: Report
Palavras-chave: Agriculture; Economic aspects; India; Industries; International Development.
Ano: 1982
URL: http://purl.umn.edu/42186

THE IMPACT OF ALTERNATIVE DEVELOPMENT STRATEGIES ON GROWTH AND DISTRIBUTION: SIMULATIONS WITH A DYNAMIC MODEL FOR EGYPT
Provedor de dados: 31
Autores: El-Said,   Moataz; Lofgren,   Hans; Robinson,   Sherman.
Addressing longer-term issues of economic development in Egypt, the paper employs a dynamically recursive computable general equilibrium (CGE) model to assess the outcomes associated with two types of development approaches over the period 1998-2012. One is a targeted sector development approach, and the second is a more broad-based development approach. Under the first development approach technological advancement is separately targeted to three sectors: agriculture, food processing, and textiles. Each sectoral choice is intended to represent alternative development strategies which we label (i) agricultural-demand- led industrialization (ADLI); (ii) food-processing-based (FOOD); and (iii) textile-based industrialization (TEXTILE). Under the second...
Tipo: Working or Discussion Paper
Palavras-chave: Atkinson inequality index; CGE; Egypt; Growth; Income distribution; SAM; Theil index; International Development; C68; D31; D33; D58; O47; O53.
Ano: 2001
URL: http://purl.umn.edu/16311

Regulación denso-dependiente del crecimiento individual de la almeja púrpura (Amiantis purpurata, Lamarck 1818)
Provedor de dados: 20
Autores: Pappalardo, M.P.; Morsan, E.M.
In this study we analyze growth, mortality and estimated biomass trend of purple clam, Amiantis purpurata, population placed in Playa Villarino, (Northern San Matias gulf, Argentina) in the southern most boundary of its geographical distribution. Previously, the population structure was described composed by three consecutive cohorts settled among 1978-1980, and the individual growth rate showed high spatial variability. The hypothesis to test in this study is that growth rate is regulated by local biomass. We choice four sites with different densities, to assess growth rate, natural mortality and retrospective estimated biomass trend. During February 2003, densities and growth rate (using external growth bands measurements) were analyzed matching with a...
Tipo: Journal Contribution
Palavras-chave: Growth rate; Clam fisheries; Mortality; Growth curves; Density dependence; Biomass; Growth; Biomass.
Ano: 2005
URL: http://hdl.handle.net/1834/4385

Azospirillum brasilense INTERACTION EFFECTS WITH CAPTAN AND THIODICARB ON THE INITIAL GROWTH OF CORN PLANTS
Provedor de dados: 196
Autores: Vogel, Gabriel Felipe; Fey, Rubens.
The application of biological products containing diazotrophic bacteria in the seed has been highlighted as an alternative to reduce the use of nitrogen fertilizers; however, the chemical treatment of the seeds may negatively affect the survival rate of these microorganisms in the soil. The effects of the application of captan (fungicide) and thiodicarb (insecticide) in association with the inoculation of Azospirillum brasilense were investigated in this study for the corn crop. The research was conducted under greenhouse conditions at Universidade Estadual do Centro-Oeste (UNICENTRO), in Guarapuava, Paraná, Brazil, and under laboratory conditions at the Universidade Federal da Fronteira Sul (UFFS), in Laranjeiras do Sul, Paraná, Brazil. A completely...
Tipo: Info:eu-repo/semantics/article
Ano: 2019
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/3133

Landscape Connectivity as a Function of Scale and Organism Vagility in a Real Forested Landscape
Provedor de dados: 7
Autores: D'Eon, Robert G; Self-employed; rdeon@interchange.ubc.ca; Glenn, Susan M; Department of Forest Sciences, University of British Columbia; SGlenn@gccnj.edu; Parfitt, Ian; Selkirk College; iparfitt@selkirk.ca.
Landscape connectivity is considered a vital element of landscape structure because of its importance to population survival. The difficulty surrounding the notion of landscape connectivity is that it must be assessed at the scale of the interaction between an organism and the landscape. We present a unique method for measuring connectivity between patches as a function of organism vagility. We used this approach to assess connectivity between harvest, old-growth, and recent wildfire patches in a real forested landscape in southeast British Columbia. By varying a distance criterion, habitat patches were considered connected and formed habitat clusters if they fell within this critical distance. The amount of area and distance to edge within clusters at...
Tipo: Peer-Reviewed Reports
Palavras-chave: British Columbia; Dispersal; Forest fragmentation; Landscape connectivity; Marten; Northern flying squirrel; Northern goshawk; Scale; Vagility.
Ano: 2002

Effects of 5-aminolevulinic acid (ALA)-containing supernatants from selected Rhodopseudomonas palustris strains on rice growth under NaCl stress, with mediating effects on chlorophyll, photosynthetic electron transport and antioxidative enzymes
Provedor de dados: 69
Autores: Nunkaew,Tomorn; Kantachote,Duangporn; Kanzaki,Hiroshi; Nitoda,Teruhiko; Ritchie,Raymond J.
Background: Rice is globally one of the most important food crops, and NaCl stress is a key factor reducing rice yield. Amelioration of NaCl stress was assessed by determining the growth of rice seedlings treated with culture supernatants containing 5-aminolevulinic acid (ALA) secreted by strains of Rhodopseudomonas palustris (TN114 and PP803) and compared to the effects of synthetic ALA (positive control) and no ALA content (negative control). Results: The relative root growth of rice seedlings was determined under NaCl stress (50 mM NaCl), after 21 d of pretreatment. Pretreatments with 1 &amp;#956;M commercial ALA and 10X diluted culture supernatant of strain TN114 (2.57 &amp;#956;M ALA) gave significantly better growth than 10X diluted PP803 supernatant...
Tipo: Journal article
Palavras-chave: 5-Aminolevulinic acid (ALA); Antioxidative enzymes; Chlorophyll fluorescence; Rhodopseudomonas palustris; Rice; Salinity.
Ano: 2014
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582014000100004

Selection for breed-specific growth hormone and IGF-I alleles in a synthetic beef cattle cross, Canchim
Provedor de dados: 74
Autores: Regitano,L.C.A.; Azevedo,J.L.; Vencovsky,R.; Packer,I.U.; Barbosa,P.F.; Rosa,A.J.M.; Silva,N.A.; Etchegaray,M.A.L.; Coutinho,L.L.
This study was developed to evaluate selection effects on gene frequencies in a synthetic beef cattle cross (5/8 Charolais, 3/8 Zebu) named Canchim. A sample of 154 Canchim animals, representing three generation classes, was analyzed for seven molecular markers. Thirty-six Charolais cattle were also studied for comparison. A highly significant variation (P &amp;lt; 0.01), with a linear increase of the allele coding for valine at position 127 of the growth hormone peptide, was observed through generations. This allele was found in the Charolais sample but is not observed in Brazilian Bos indicus breeds. Four alleles were found for a microsatellite in the 5' flanking region of insulin-like growth factor I gene in Canchim. Allele sizes ranged from 231 to 225...
Tipo: Info:eu-repo/semantics/article
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47571999000400011

Effect of growth hormone on fatty acid synthase gene expression in porcine adipose tissue cultures
Provedor de dados: 74
Autores: José,Andrea A.F.B.V.; Alvares,Lúcia. E.; Delgado,Eduardo F.; Coutinho,Luiz L.; Lanna,Dante P.D.
We describe an efficient in vitro assay to test growth hormone effects on mRNA levels and fatty acid synthase (FAS, EC. 2.3.1.85) activity. Swine adipose tissue explants were long-term cultured in medium containing growth hormone and FAS mRNA levels and enzyme activity were measured. We quantified FAS transcripts by competitive reverse transcriptase PCR (RT-PCR) using total RNA from cultured adipose tissue explants and RT-PCR standard-curves were constructed using a cloned 307 bp segment of native FAS cDNA and a shorter fragment from which a 64 bp (competitor, 243 bp) internal sequence had been deleted. A known amount of competitor was added to each PCR as an internal control and µ-actin transcripts were also measured to correct for differences in total...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: MRNA quantification; Enzyme activity; Swine; Cultures of adipose tissue explants; Competitive RT-PCR.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000100032

Nitrogen on growth and yield of lettuce plants grown under root confinement
Provedor de dados: 75
Autores: Cardoso,Francieli L; Andriolo,Jerônimo L; Picio,Miriane Dal; Piccin,Marcieli; Souza,Jéssica M.
ABSTRACT: The objective of this research was to test the hypothesis that when lettuce plants grow under root confinement, development and yield is reduced and that such negative effects may be compensated by increasing nitrogen availability in the rooting media. The experiment was conducted between August 11st and September 23rd 2011. Lettuce transplants, cultivar Stella, bearing five leaves, were planted in pots using sand as substrate. Treatments were three root confinement levels and five N concentrations in the nutrient solution, in a 3x5 factorial randomized experimental design with four replications. Root confinements were simulated by pot sizes of 2.5 dm³ (no confinement, the control); 1.0 dm³ (moderate) and 0.4 dm³ (severe). Nitrogen concentrations...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactuca sativa; Fertilization; Horticulture; Mineral nutrition.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362015000400422

Crescimento de espécies madeireiras em uma floresta sob manejo no Acre.
Provedor de dados: 14
Autores: ARAUJO, H. J. B. de.
O diâmetro do fuste das árvores é uma medida de grande importância silvicultural por permitir múltiplos cálculos dendrométricos, entre estes o volume, portanto, o crescimento do diâmetro é fundamental na determinação do crescimento volumétrico das árvores. O objetivo deste estudo é avaliar por meio de cintas dendrométricas o crescimento de espécies madeireiras comerciais em uma área manejada no estado do Acre. Por cinco anos, foram monitoradas 509 árvores distribuídas em cinco classes diamétricas (DAP variando de 9,5 cm a 140,0 cm) e pertencentes a 27 espécies. O crescimento individual diamétrico médio foi de 0,542 cm ano-1 e o volumétrico de 0,053 m3 ano-1. Em geral, as correlações entre o crescimento diamétrico com o DAP e as condições ambientais...
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Manejo florestal; Medidas del árbol y del rodal; Dendrometry; Projeto de Colonização Pedro Peixoto; Senador Guiomard (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Espécie Nativa; Madeira; Essência Florestal; Dendrometria; Crescimento; Caule; Diâmetro; Forest management; Tropical wood; Tree and stand measurements.
Ano: 2019
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1106895

Effect of environmental and nutritional factors on growth and azaspiracid production of the dinoflagellate Azadinium spinosum
Provedor de dados: 5
Autores: Jauffrais, Thierry; Sechet, Veronique; Herrenknecht, Christine; Truquet, Philippe; Savar, Veronique; Tillmann, Urban; Hess, Philipp.
Azadinium spinosum, a small dinoflagellate isolated from the North Sea, is a producer of azaspiracids (AZAs), a group of biotoxins associated with human illness following ingestion of contaminated shellfish. Using batch and continuous cultures of A. spinosum, the present study investigated the effects of different environmental and nutritional factors (salinity, temperature, photon flux density, aeration, culture media, nitrogen sources, phosphate source, and N/P ratios) on growth, maximum cell concentration, and AZA cell quota.  Azadinium spinosum grew in a wide range of conditions; from 10 ̊C to 26 ̊C and salinities from 30 to 40, under irradiances ranging from 50 μmol m−2 s−1 to 250 μmol m−2 s−1, with or without aeration. Growth and maximum cell...
Tipo: Text
Palavras-chave: AZA; Chemostat; Dinophyceae; Nutrients; N/P ratio; Photobioreactor.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00149/26054/24411.pdf

Modelling Crassostrea gigas growth and reproduction in different contrasted ecosystems by using dynamic energy budgets : generic validation of the oyster-DEB model
Provedor de dados: 5
Autores: Bourles, Yves; Maurer, Daniele; Le Moine, Olivier; Geairon, Philippe; Mazurie, Joseph; Gangnery, Aline; Alunno-bruscia, Marianne; Pouvreau, Stephane; Goulletquer, Philippe.
Oyster farming is the main aquaculture activity in France, where Pacific oyster (Crassostrea gigas) is spatially cultured from the English Channel to the Mediterranean coasts. Oyster growth performance monitored along French coasts are widely heterogeneous among culture sites and over years. Many studies have been carried out to understand the effects of environmental factors on oyster growth and physiology, by using bioenergetics growth models. However, most of these studies were site-specific. As an example, the model developed by Barillé et al. (1997), which was extensively specified with more than 50 parameters, was validated in the Marennes-Oléron Bay, but cannot be successfully applied to other culture sites without re-estimating parameters or...
Tipo: Text
Ano: 2009
URL: http://archimer.ifremer.fr/doc/00032/14367/11657.pdf

Growth and age estimation of the greater forkbeard, Phycis blennoides (Actinopterygii: Gadiformes: Phycidae), from the Gulf of Tunis (central Mediterranean)
Provedor de dados: 5
Autores: Romdhani, Ahlem; Ktari, Mohamed-hedi; Dufour, Jean-louis; Mahe, Kelig; Francour, Patrice.
Background. The greater forkbeard, Phycis blennoides (Brünnich, 1768), is a gadiform species, which has economical value and its population is dwelling in a 60–800 m depth range throughout the Atlantic and the Mediterranean. Along African north coast, there is a lack of information about the biology (age, growth, sex-ratio) of this species. This study provides the first data on population parameters of P. blennoides in Tunisia.  Materials and Methods. Specimens of Phycis blennoides were collected from the landings of the artisanal fisheries between September 2007 and June 2010. The length–weight relations were determined according to the allometric equation: W = aTLb. Growth parameters were estimated using the von Bertalanffy growth equation.  Results....
Tipo: Text
Palavras-chave: Otolith; Biological traits; Length-weight relation; Von Bertalanffy growth function.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00324/43532/43077.pdf

Influence of periphyton substrates and rearing density on Liza aurata growth and production in marine nursery ponds
Provedor de dados: 5
Autores: Richard, Marion; Maurice, Julien-thomas; Anginot, Aurore; Paticat, Francois; Verdegem, M. C. J.; Hussenot, Jerome.
The main objectives of this investigation were to test the effects of (i) the presence of periphyton substrates, (ii) rearing density and (iii) supplemental feeding with dry feed on the growth and production of golden mullet (Liza aurata) juveniles. Twenty-six 1 m(2)-cages were installed in a French marine pond from April till June 2008. Mullets were stocked in cages with or without substrate at a density of 0, 20,40 or 60 individuals per cage. Each treatment was carried out in triplicate. In addition, 20 fish were put in three tanks and fed ad libitum with dry feed. The results showed that (i) although mullets were seen to graze on periphyton substrates, their presence did not affect,mullet growth and production. In future studies, meshed substrates could...
Tipo: Text
Palavras-chave: Periphyton; Mullet; Extensive aquaculture; Artificial substrate; Marine pond.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00029/14067/11614.pdf

Estimating age at maturation and energy-based life-history traits from individual growth trajectories with nonlinear mixed-effects models
Provedor de dados: 5
Autores: Brunel, Thomas; Ernande, Bruno; Mollet, Fabian M.; Rijnsdorp, Adriaan D.
A new method is presented to estimate individuals’ (1) age at maturation, (2) energy acquisition rate, (3) energy expenditure for body maintenance, and (4) reproductive investment, and the multivariate distribution of these traits in a population. The method relies on adjusting a conceptual energy allocation model to individual growth curves using nonlinear mixed-effects modelling. The method’s performance was tested using simulated growth curves for a range of life-history types. Individual age at maturation, energy acquisition rate and the sum of maintenance and reproductive investment rates, and their multivariate distribution, were accurately estimated. For the estimation of maintenance and reproductive investment rates separately, biases were observed...
Tipo: Text
Palavras-chave: Bioenergetics growth model; Individual growth trajectory; Life-history trade-offs; Energy acquisition; Maintenance; Reproductive investment; Sexual maturation.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00124/23537/21378.pdf

Effects of seasonal dynamics in a Zostera noltii meadow on phosphorus and iron cycles in a tidal mudflat (Arcachon Bay, France)
Provedor de dados: 5
Autores: Deborde, Jonathan; Abrill, Gwenael; Mouret, Aurelia; Jezequel, Didier; Thouzeau, Gerard; Clavier, Jacques; Bachelet, Guy; Anschutz, Pierre.
A study was conducted in Arcachon Bay, France, to determine the effect of seasonal dynamics in a Zostera noltii meadow on P and Fe cycles in the superficial sediments of a tidal mudflat. The redox-sensitive Fe particulate pool and associated P in the root zone showed a seasonal variation following the growth and decay of Z. noltii biomass, with a maximum content during the growth period. In comparison, the bare sediments did not show significant seasonal changes. A dissolved inorganic phosphorus (DIP) uptake was measured from the water column to the sediment in vegetated sediments, whereas a net DIP efflux was observed in the unvegetated sediments. During the growth period, the formation of an iron oxihydroxide-rich zone occurred and acted as a trap for...
Tipo: Text
Palavras-chave: Nutrient; Eelgrass growth; Intertidal zone; Lagoon; Early diagenesis.
Ano: 2008
URL: https://archimer.ifremer.fr/doc/00603/71539/69966.pdf

Applying Dynamic Energy Budget (DEB) theory to simulate growth and bio-energetics of blue mussels under low seston conditions
Provedor de dados: 5
Autores: Rosland, R; Strand, O; Alunno-bruscia, Marianne; Bacher, Cedric; Strohmeier, T.
A Dynamic Energy Budget (DEB) model for simulation of growth and bioenergetics of blue mussels (Mytilus edulis) has been tested in three low seston sites in southern Norway. The observations comprise four datasets from laboratory experiments (physiological and biometrical mussel data) and three datasets from in situ growth experiments (biometrical mussel data). Additional in situ data from commercial farms in southern Norway were used for estimation of  biometricalrelationships in the mussels. Three DEB parameters (shape coefficient, half saturation coefficient, and somatic maintenance rate coefficient) were estimated from experimental data, and the estimated parameters were complemented with parameter values from literature to establish a basic parameter...
Tipo: Text
Palavras-chave: Low seston; Modelling; DEB theory; Mytilus edulis; Mussel culture.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6266.pdf

Isolation and physiological characterization of two novel, piezophilic, thermophilic chemolithoautotrophs from a deep-sea hydrothermal vent chimney
Provedor de dados: 5
Autores: Takai, Ken; Miyazaki, Masayuki; Hirayama, Hisako; Nakagawa, Satoshi; Querellou, Joel; Godfroy, Anne.
P&gt;Two novel, thermophilic piezophiles, capable of chemolithoautotrophic growth, are successfully cultivated and isolated from a black smoker chimney at the TAG field (Mid Atlantic Ridge: MAR) by using a piezophilic cultivation technique. Both strains (strains 106 and 108) represent dominant cultivated populations of the microbial communities in the chimney surface habitat. Strain 106 represents typically thin, long spiral cells under the piezophilic growth condition but short bent cells under the non-piezophilic condition. It is a strictly chemolithoautotrophic gammaproteobacterium using reduced sulfur compounds as the electron donors, and nitrate and O-2 as the electron acceptors. Based on the 16S rRNA gene sequence, strain 106 would represent a novel...
Tipo: Text
Palavras-chave: Sp. nov.; Ecological signifiance; Hydrostatic pressure; Subsurface biosphere; Base composition; High temperature; Membrane lipids; Gen. nov.; Microorganisms; Diversity.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6652.pdf

Effect of dietary water content on European sea bass (Dicentrarchus labrax) growth and disease resistance
Provedor de dados: 5
Autores: Przybyla, Cyrille; Fievet, Julie; Callier, Myriam; Blancheton, Jean-paul.
The effect of dietary water content on Dicentrarchus labrax growth parameters and resistance to Vibrio anguillarum infection was investigated using commercial pellets with identical energy contents and different moisture levels. The first experiment hypothesis was that moisturizing pelleted ration can have an impact on Dicentrarchus labrax growth performance by the osmoregulation energy cost reduction. In a second time, the experiment explores the effect of water addition in pellets on the fish resistance to a disease. A specific device was built to uniformly moisturize dry pellets to different moisture levels, i.e. 8%, 20%, 40% and 60%. After an acclimation period and a 54-day rearing period, the control fish had grown from 72.7 +/- 17.9 g to 133.3 +/-...
Tipo: Text
Palavras-chave: Fish aquaculture; Dietary moisture content; Feed pellets; Fish growth; Immunity; Dicentrarchus labrax; Vibrio anguillarum.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00248/35927/34446.pdf

Growth and gonad development of the tropical black-lip pearl oyster, Pinctada margaritifera (L.), in the Gambier archipelago (French Polynesia)
Provedor de dados: 5
Autores: Le Moullac, Gilles; Tiapari, Jerome; Teissier, Hinano; Martinez, Elodie; Cochard, Jean-claude.
The growth and reproductive cycle of cultured black-lipped pearl oysters, Pinctada margaritifera (L.), were studied in the Gambier Islands (134°52' W, 23°07' S) from September 2002 to August 2003. Temperatures were recorded throughout the year, revealing seasonal temperature variations between 22.3 °C and 27.8 °C. The mean annual chlorophyll a value, as computed from satellite data, was 0.188 ± 0.075 µg L-1. To study growth and reproduction, 720 two-year-old individuals were ear hung on longlines suspended at a depth of 7 m. Samples were taken twice a month to obtain the following measurements: shell height; wet weight of flesh and total oyster; dry weight of adductor muscle, mantle and visceral mass; and glycogen content. Gonad development was also...
Tipo: Text
Palavras-chave: Pearl oyster; Pinctada margaritifera; Growth; Reproduction; Temperature; Chlorophyll; Seasonality; Gambier archipelago.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00040/15099/13570.pdf

Effect of trematode parasites on cockle Cerastoderma edule growth and condition index: a transplant experiment
Provedor de dados: 5
Autores: De Montaudouin, X.; Bazairi, H.; Culloty, S.
We quantified the effect of trematode parasites in cockles through a 303 d transplant experiment. Cockles were sampled in 3 different sites on the southwest coast of France characterized by 3 different trematode communities, i.e. Royan (RO): high Meiogymnophallus minutus abundance near cockle heart, South Arguin (SA): high Himasthla interrupta abundance in the mantle margin, and North Arguin (NA): almost free of trematodes. Sampled cockles were individually tagged and placed in different cages at Banc d'Arguin, Arcachon Bay. At the end of the experiment, RO cockles had lost their trematodes, highlighting the fact that trematode lifespan can be short, while SA cockles maintained their trematode load. When cockles were the second intermediate host, there was...
Tipo: Text
Palavras-chave: Cerastoderma edule; Parasitism; Growth; Mortality; Condition index; Transplant experiment.
Ano: 2012
URL: https://archimer.ifremer.fr/doc/00375/48640/49090.pdf

Modélisation de la croissance des poissons en élevage
Provedor de dados: 5
Autores: Muller-feuga, Arnaud.
After a literature overview of growth models applied to intensively cultured fishes, a new one is proposed for assistance in rearing operations, with following characteristics. A simple and integratable mathematic expression simulates growth while eliminating individual weight influence. It gives way to a specific growth general definition. Temperature action mode on growth speed is simulated by substraction of two exponential functions. An automatic calculation method of thermal parameters is proposed. The torpid action of low temperatures is considered. Feeding ration influences growth through simple rules which are explicitly taken in account by mean of a two parameters function. The other growth factors, more difficult to seize, are expressed through a...
Tipo: Text
Palavras-chave: Modèle; Croissance; Élevage poissons; Pisciculture; Model; Fish culture.; Growth.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/00183/29428/27794.pdf

Ecophysiological model of growth and reproduction of the black pearl oyster, Pinctada margaritifera: potential applications for pearl farming in French Polynesia
Provedor de dados: 5
Autores: Pouvreau, Stephane; Bacher, Cedric; Heral, Maurice.
A model of bioenergetics of the black pearl oyster (Pinctada margaritifera) was built to simulate growth, reproduction and spawning in suspended culture at field sites in Takapoto lagoon (French Polynesia). This model was based on allometric scaling of physiological functions and scope for growth (SFG) calculations. The input functions were clearance rate (CR, 1 day(-1)), retention efficiency (RE, %) for each kind of particle encountered in suspended matter, pseudofaeces and faeces productions (PF and F, mg C day(-1)), excretion and respiration rate (U and R, mg C day(-1)). The assimilated carbon (i.e., SFG, mg C day(-1)) was partitioned to the three internal state variables (somatic tissue, shell and gonad) according to the asymptotic increase of the...
Tipo: Text
Palavras-chave: Pearl farming; Food depletion; Scope for growth; Carrying capacity; Suspension feeding; Tropical lagoon.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/2000/publication-380.pdf

Effect of an oversulfated exopolysaccharide on angiogenesis induced by fibroblast growth factor-2 or vascular endothelial growth factor in vitro
Provedor de dados: 5
Autores: Matou, Sabine; Colliec-jouault, Sylvia; Galy Fauroux, Isabelle; Ratiskol, Jacqueline; Sinquin, Corinne; Guezennec, Jean; Fischer, Anne-marie; Helley, Dominique.
The aim of this study was to determine the angiogenic properties of an oversulfated exopolysaccharide (OS-EPS) derived from a polysaccharide secreted by the mesophilic bacterium Alteromonas infernus. We compared the effect of this OS-EPS with that of a non-oversulfated exopolysaccharide (EPS) on human umbilical vein endothelial cell (HUVEC) proliferation, migration and differentiation induced by basic fibroblast growth factor (FGF-2) or vascular endothelial growth factor (VEGF). OS-EPS enhanced HUVEC proliferation by 58% when used alone, and by respectively 30% and 70% in the presence of FGF-2 and VEGF. OS-EPS also increased the density of tubular structures on Matrigel in the presence of FGF-2 or VEGF. Vascular tube fort-nation was related to alpha(6)...
Tipo: Text
Palavras-chave: Matrigel; Collagen gel; Alpha 6 integrin subunit; Angiogenic growth factor; Polysaccharide; Angiogenesis.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/publication-2118.pdf

Mn labelling of living oysters: Artificial and natural cathodoluminescence analyses as a tool for age and growth rate determination of C. gigas (Thunberg, 1793) shells
Provedor de dados: 5
Autores: Lartaud, Franck; De Rafelis, Marc; Ropert, Michel; Emmanuel, Laurent; Geairon, Philippe; Renard, Maurice.
We developed a growth model for Crassostrea gigas oyster shells based on the use of in situ temporal manganese markings to calibrate natural cathodoluminescence (CL) changes in the shell hinge sections. A 30 min to 4-h exposure period with Mn2+ (90-120 mg l(-1)) was sufficient to create a detectable mark in the shells. This makes the Mn2+ markings the fastest mollusc shells marking technique to date. The natural CL from juvenile and adult shells cultured in four standard shellfish-farming locations along the English Channel and French Atlantic coasts, exhibited a seasonal pattern (maximum CL intensity occurring during summer periods, minimum CL intensity occurring during winter). Hydrobiological data recorded at Baie des Veys site allows us to attribute...
Tipo: Text
Palavras-chave: Oyster shells; Crassostrea gigas; Manganese markings; Cathodoluminescence; Seasonal growth patterns.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00002/11300/7912.pdf

An early-life hypoxia event has a long-term impact on protein digestion and growth in European sea bass juvenile.
Provedor de dados: 5
Autores: Zambonino, Jose-luis; Mazurais, David; Dubuc, Alexia; Queau, Pierre; Vanderplancke, Gwenaelle; Servili, Arianna; Cahu, Chantal; Le Bayon, Nicolas; Huelvan, Christine; Claireaux, Guy.
Ocean warming, eutrophication and consequent decrease in oxygen lead to smaller average fish size. Although such responses are well-known in an evolutionary context, involving multiple generations, it appears to be incompatible with current rapid environmental change. Rather, phenotypic plasticity could provide a means for marine fish to cope with rapid environmental changes. However, little is known about the mechanisms underlying plastic responses to environmental conditions that favour small phenotypes.  Our aim was to investigate how and why European sea bass that had experienced a short episode of moderate hypoxia during their larval stage subsequently exhibited a growth depression at the juvenile stage compared to the control group.  We examined...
Tipo: Text
Palavras-chave: Climate change; Digestive enzymes; Dicentrarchus labrax; Growth; Hypoxia; Respirometry.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00373/48407/48635.pdf

Alexandrium minutum growth controlled by phosphorus An applied model
Provedor de dados: 5
Autores: Chapelle, Annie; Labry, Claire; Sourisseau, Marc; Lebreton, Carole; Youenou, Agnes; Crassous, Marie-pierre.
Toxic algae are a worldwide problem threatening aquaculture public health and tourism Alexandrium a toxic dinoflagellate proliferates in Northwest France estuaries (i e the Penze estuary) causing Paralytic Shellfish Poisoning events Vegetative growth and in particular the role of nutrient uptake and growth rate are crucial parameters to understand toxic blooms With the goal of modelling in situ Alexandrium blooms related to environmental parameters we first try to calibrate a zero-dimensional box model of Alexandrium growth This work focuses on phosphorus nutrition Our objective is to calibrate Alexandrium minutum as well as Heterocapsa triquetra (a non-toxic dinoflagellate) growth under different rates of phosphorus supply other factors being optimal and...
Tipo: Text
Palavras-chave: Toxic algal blooms; Alexandrium; Phosphorus uptake; Models; Competition; Northwest France.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00018/12901/9905.pdf

Growth of north-east Atlantic cold-water coral reefs and mounds during the Holocene: A high resolution U-series and C-14 chronology
Provedor de dados: 5
Autores: Douarin, Melanie; Elliot, Mary; Noble, Stephen R.; Sinclair, Daniel; Henry, Lea-anne; Long, David; Moreton, Steven G.; Roberts, J. Murray.
We investigated the Holocene growth history of the Mingulay Reef Complex, a seascape of inshore cold-water coral reefs off western Scotland, using U-series and radiocarbon dating methods. Both chronologies revealed episodic occurrences of the reef framework-forming scleractinian coral Lophelia pertusa during the late Holocene. Downcore U-series dating revealed unprecedented reef growth rates of up to 12 mm a(-1) with a mean rate of 3-4 mm a(-1). Our study highlighted a persistent hiatus in coral occurrence from 1.4 ka to modern times despite present day conditions being conducive for coral growth. The growth history of the complex was punctuated at least twice by periods of reduced growth rates: 1.75-2.8 ka, 3.2-3.6 ka and to a lesser extent at 3.8-4 ka...
Tipo: Text
Palavras-chave: NE Atlantic; Holocene; Lophelia pertusa; Cold-water coral reef.
Ano: 2013
URL: https://archimer.ifremer.fr/doc/00181/29224/82432.pdf

Morphometric Development of the Vertebral Segments of the Vertebral Column in the Goat (Capra hircus) During the Fetal Period
Provedor de dados: 77
Autores: Nourinezhad,Jamal; Bamohabat,Saleh; Mazaheri,Yazdan; Khazaeel,Kaveh.
Understanding normal fetal growth rates of the vertebral column, and between species, provide a basis to establish reference values for evaluation of body development and estimation of fetal age by ultrasonography. Goats are also widely used in biomedical perinatal research and are still considered a key to understanding the skeletal development. This study was carried out to clarify growth of length of vertebral column at segmental, regional, and total level of vertebral column in the fetal goats during different gestational age. The length of each vertebral segment of 25 goat fetuses, aged between 6 and 20 weeks were measured for each vertebra using a digital caliper. Our study demonstrated differences among various fetal ages in terms of regional,...
Tipo: Journal article
Palavras-chave: Segmental growth; Vertebrae; Morphometrics; Goat fetus; Prenatal development.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000200020

Wood chip mulch thickness effects on soil water, soil temperature, weed growth and landscape plant growth.
Provedor de dados: 18
Autores: van Donk, Simon J.; Lindgren, Dale T.; Schaaf, Daniel M.; Petersen, J.L.; Tarkalson, D.D.
Wood chip mulches are used in landscapes to reduce soil water evaporation and competition from weeds. A study was conducted over a three-year period to determine soil water content at various depths under four wood chip mulch treatments and to evaluate the effects of wood chip thickness on growth of 'Husker Red' Penstemon digitalis Nutt. plants. The effects of four wood chip thicknesses (depth of application: 0, 2.5, 5, and 10 cm) on soil water content, weed numbers, soil temperature, and height, width, stalk number, and first flower date of 'Husker Red' Penstemon were investigated. The addition of mulch, at all mulch thicknesses, conserved soil water compared to when no mulch was used. The differences in soil water content likely influenced some of the...
Tipo: Article
Palavras-chave: Soil water (soil moisture); Soil.
Ano: 2012
URL: http://eprints.nwisrl.ars.usda.gov/1456/1/1421.pdf

Threshold Decline in Mesoamerican Coral Growth and Resiliency
Provedor de dados: 17
Autores: Jessica Carilli; Richard Norris.
Caribbean coral reefs have been massively altered in recent decades due to human impacts, resulting in a dramatic reduction of live coral cover but quantitative data before the 1970s have not been available to assess how these changes came about1,2,3. We produced master chronologies of growth rates in massive Montastrea faveolata corals from the Mesoamerican reef tract that provide a method for extending records of coral health further back into the past. Our records reveal a unique reduction in growth rate associated with the 1998 coral bleaching event that has no parallel in the past 75 to 150 years. Of 92 cores collected from live coral heads in 2006-2007, 94% have severely reduced growth rates and 14% exhibit partial mortality scars in 1998-1999...
Tipo: Manuscript
Palavras-chave: Earth &amp; Environment.
Ano: 2008
URL: http://precedings.nature.com/documents/2115/version/1

Premiere approche de la croissance de la Squille Squilla mantis (l., 1758) dans les eaux Tunisiennes
Provedor de dados: 20
Autores: Mili, S.; Ennouri, R.; Jarboui, O.; Missawi, H.
Les distributions des tailles de la squille Squilla mantis (L., 1758) pêchée dans les eaux tunisiennes (golfes de Tunis, Hammamet et Gabès) ont été analysées par différentes méthodes pour étudier la croissance de ce crustacé. La décomposition modale des distributions de taille des captures de cette espèce a permis de calculer les paramètres de croissance L∞ (mm), K (an-1) et t0 de S. mantis en utilisant le modèle de Von Bertalanffy (1938). La fonction mathématique de Von Bertalanffy a permis de montrer que dans les trois golfes de la Tunisie, la croissance des femelles est inférieure à celle des mâles. Le taux de croissance est supérieur pour les squilles du golfe de Gabès par rapport à celui du golfe de Hammamet et du golfe de Tunis. La population totale...
Tipo: Journal Contribution
Palavras-chave: Shrimp culture; Length; Growth.
Ano: 2013
URL: http://hdl.handle.net/1834/5920

Efectos de temperatura y salinidad sobre el crecimiento de juveniles de besugo Pagrus pagrus (Linné,1758)(Actinopterygii; Perciformes) en sistemas de recirculación cerrada
Provedor de dados: 20
Autores: Suárez, J.
The growth and survival of juvenile red porgy, Pagrus pagrus, reared in captivity (mean body weigth 81.0 not equal to 37.24g), exposed to two different temperatures (18 degree and 22 degree C)and three salinities (21, 27 and 33 psu)during a 30 day period, were studied. Final survival rate was 100. in all treatments. The highest growth rate was reached at 18 degree C/33 psu with a value of 1.07 /day. There was an inverse trend in the growth rate between the two temperatures. Food consumption increased with the increase of salinity and temperature. The highest food consumption rate was 1.17. (18 degree C/33 psu). The relationships between protein efficiency ration (PER)and salinity were positive at 18 degree C and negative at 22 degree C. The highest values...
Tipo: Theses and Dissertations
Palavras-chave: Environmental effects; Fish culture; Food consumption; Growth; Juveniles; Recirculating systems; Survival; Marine aquaculture; Fish culture; Food consumption; Growth; Juveniles; Survival; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_3016; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_25393; Http://aims.fao.org/aos/agrovoc/c_7538.
Ano: 2004
URL: http://hdl.handle.net/1834/2601

Effect of algal ration on feeding and growth of juvenile manila clam &lt;i&gt;Tapes philippinarum&lt;/i&gt; (Adams and Reeve)
Provedor de dados: 27
Autores: Coutteau, P.; Curé, K.; Sorgeloos, P.
Juvenile &lt;i&gt;Tapes philippinarum&lt;/i&gt; (Adams and Reeve) were reared for three weeks on different rations of &lt;i&gt;Chaetoceros neogracile&lt;/i&gt; which were either centrifuged and stored or fed together with the culture medium. Algal rations were adjusted daily in order to feed constant weight-specific daily rations. Growth of &lt;i&gt;T. philippinarum&lt;/i&gt; fed the concentrate of &lt;i&gt;C. neogracile&lt;/i&gt; was maximal at a daily ration of 1% (algal dry weight per clam live weight). &lt;i&gt;T. philippinarum&lt;/i&gt; fed single or mixed diets of &lt;i&gt;C. neogracile&lt;/i&gt; and &lt;i&gt;Isochrysis&lt;/i&gt; sp. (clone T-Iso) directly from the algal cultures, maximized growth at a ration of 1,3% day &lt;sup&gt;-1&lt;/sup&gt;....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tapes philippinarum (Adams &amp; Reeve; 1850).
Ano: 1994
URL: http://www.vliz.be/imisdocs/publications/2559.pdf

The influence of phosphorus deficiency on growth and nitrogen fixation of white clover plants
Provedor de dados: 21
Autores: Høgh-Jensen, Dr Henning; Schjoerring, Dr Jan K.; Soussana, Dr Jean-Francois.
The effects of P deficiency on growth, N2-fixation and photosynthesis in white clover (Trifolium repens L.) were investigated using three contrasting relative addition rates of P, or following abrupt withdrawal of the P supply. Responses to a constant below-optimum P supply rate consisted of a decline in N2-fixation per unit root weight and a small reduction in the efficiency with which electrons were allocated to the reduction of N2 in the nodules. Abrupt P removal arrested nodule growth and caused a substantial decline in nitrogenase activity per unit root weight, but not per unit nodule mass.   Similarly, the rate of photosynthesis per unit leaf area was unaffected by abrupt P removal, while the CO2 acquisition for the plant as a whole decreased due to...
Tipo: Journal paper
Palavras-chave: Pasture and forage crops.
Ano: 2002
URL: http://orgprints.org/286/1/Pstress%2Dfinal.pdf

The Uptake of Organic Agriculture: A Decade of Worldwide Development
Provedor de dados: 21
Autores: Paull, John.
It has been claimed that organic agriculture is the fastest growing agriculture based industry in the world. The land devoted to organic agriculture worldwide has increased over the past decade from 15.8 million hectares to 37.2 million hectares exhibiting a compounding rate of growth of 8.9% per annum. This paper disaggregates the global growth in organic agriculture land over the past decade using country as the unit of analysis. For each country, two indices of organics sector growth are derived, firstly, the actual hectares increase, and secondly, the hectares-multiplier, that is the factor by which the organic hectares have changed over the decade. Growth over the past decade is presented for 71 countries which taken together account for 35.3 million...
Tipo: Journal paper
Palavras-chave: "Organics" in general; Farming Systems; Australia; China; India; World; History of organics; Knowledge management; Country reports.
Ano: 2011
URL: http://orgprints.org/19517/1/Paull2011DecadeJSDS.pdf

Healthy growth: From niche to volume with integrity and trust
Provedor de dados: 21
Organic markets are different in different European countries, but common to all is that local organic market chains have inherent problems in moving from niche to volume, and mainstream large-scale market chains have inherent problems in securing and advancing organic values. HEALTHYGROWTH aims to investigate a range of successful mid-scale organic value chains in order to learn how they are able to combine volume and values, and to use this knowledge of the prerequisites for healthy growth to support the further development of the organic markets. The project builds on the following hypotheses, derived from previous research: 1) these mid-scale value chains are based on new forms of organisations and partnerships between farmers, businesses and...
Tipo: Project description
Palavras-chave: Social aspects.
Ano: 2023
URL: http://orgprints.org/22467/1/22467.pdf

The Effect of Plant Growth Promoting Rhizobacteria on Barley Seedling Growth, Nutrient Uptake, Some Soil Properties, and Bacterial Counts
Provedor de dados: 21
Autores: Cakmakci, Ramazan; Donmez, M.Figen; Erdogan, Ummugulsum.
This study was conducted with barley in greenhouse conditions in order to investigate seed inoculation with 5 different  N2-fixing (Bacillus licheniformis RC02, Rhodobacter capsulatus RC04, Paenibacillus polymyxa RC05, Pseudomonas putida RC06, and  Bacillus OSU-142) and 2 different phosphate-solubilising (Bacillus megaterium RC01 and Bacillus M-13) bacteria in comparison to  control and mineral fertiliser (N and P) application. Among the strains used in the present study, 6 plant growth promoting  rhizobacteria (PGPR) stimulated indole acetic acid (IAA) production and 3 of them stimulated phosphate solubilisation; all bacterial  strains fixed N2 and significantly increased the growth of barley. Available phosphate in soil was significantly increased by...
Tipo: Journal paper
Palavras-chave: "Organics" in general; Nutrient turnover; Soil.
Ano: 2007
URL: http://orgprints.org/31215/1/UE-1.pdf

The effect of potassium deficiency on growth and N2-fixation in Trifolium repens
Provedor de dados: 21
Autores: Høgh-Jensen, Dr. Henning.
The effects of potassium (K) deficiency on growth, N2-fixation and photosynthesis in white clover (Trifolium repens L.) were investigated using natural occurring gas fluxes on the nodules in real time of plants under three contrasting relative addition rates of K causing mild K deficiency, or following abrupt withdrawal of the K supply causing strong K deficiency of less than 0.65% in dry matter. A steady-state below-optimum K supply rate led to an increase in CO2-fixation per unit leaf surface area as well as per plant leaf surface. However, nitrogenase activity per unit root weight and per unit nodule weight was maintained, as was the efficiency with which electrons were allocated to the reduction of N2 in the nodules. Abrupt K removals stimulated...
Tipo: Journal paper
Palavras-chave: Pasture and forage crops.
Ano: 2003
URL: http://orgprints.org/632/1/K%2Dstress%2D5%2Drevised%2D3.doc

Genotypic differences in growth, yield and nutrient accumulation of spring wheat cultivars in response to long-term soil fertility regimes
Provedor de dados: 21
Autores: Wang, Yaosheng; Magid, Jakob; Thorup-Kristensen, Kristian; Stoumann Jensen, Lars.
Determining genotypic responses to soil fertility may assist selection of cultivars that can be adapted to varied soil fertility regimes, and such selection under field conditions is still limited. A two-year field experiment was conducted in long-term field trials to investigate wheat genotype effects on early growth, yield and nutrient accumulation as affected by varied long-term soil fertility managements and nitrogen (N) fertilization. Results show that the early growth, grain yield and nutrient accumulation of spring wheat plants were strongly affected by soil fertility managements and genotypes. Early shoot and root biomass of singly grown plants and leaf canopy growth under standard growth density was associated with subsequent grain yield of plants...
Tipo: Journal paper
Palavras-chave: Soil quality Breeding; Genetics and propagation.
Ano: 2016
URL: http://orgprints.org/30702/1/Wang%20et%20al%20Acta%20Agr%20Sca%202016%20copy.pdf

Seedling growth response of Seriphidium quettense to water stress and non-water stress conditions
Provedor de dados: 85
Autores: Ahmad,S; Gul,S; Achakzai,AKK; Islam,M.
Seedling growth and development of Seriphidium quettense were examined under water stress (WS) and non-water stress (NWS) conditions. Seedlings were grown in pots to investigate their response to NWS conditions. Impact of WS on seedling growth was assessed in pre-existing plants grown under a semi-arid, natural environment. Seedling growth attributes were recorded on a monthly basis. Seedling growth exhibited a significant positive response under NWS conditions. Length of the main root axis at the first leaf emergence stage was 5.69 cm under NWS conditions; however, it was 4.8 cm in the natural environment (WS). At the end of the growing season, length of their primary root was 118 cm in NWS conditions. At the same time, it reached 8.8 cm in the WS natural...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seriphidium quettense; Root and shoot growth; Water stress.
Ano: 2010
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572010000100004

Crop Growth and Yield Losses in Wheat Due to Little Seed Canary Grass Infestation Differ with Weed Densities and Changes in Environment
Provedor de dados: 87
Autores: HUSSAIN,S.; KHALIQ,A.; BAJWA,A.A.; MATLOOB,A.; AREEB,A.; ASHRAF,U.; HAFEEZ,A.; IMRAN,M.
ABSTRACT: Understanding the weed interference with different sowing times of crop is inevitable for forecasting yield losses by weed infestation and designing sustainable weed management systems. A field experiment was carried out to evaluate the effects of sowing dates (20th November, 10th December) and various little seed canary grass (LCG) infestation levels (10, 20, 30 and 40 plant m-2) on growth and yield of wheat under semiarid conditions. Plots with two natural infestations of weeds including LCG (Unweeded control; UWC) and excluding LCG (UWC-LCG) were maintained for comparing its interference in pure stands with designated densities. A season-long weed-free (WFC) treatment was also run. All the weeds/LCG infestation levels starting from 10 LCG...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Interference; Little seed canary grass; Sowing time; Weeds; Wheat yield losses.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100272

Agricultural research and productivity growth in India
Provedor de dados: 31
Autores: Evenson,   Robert E.; Pray,   Carl E.; Rosegrant,   Mark W.
India’s investments in agricultural research, extension, and irrigation have made it one of the largest publicly funded systems in the world. But some policymakers who perceive that the benefits to research may be declining are advocating a cut back on public spending on research. This research report, which examines the effects of research and development on productivity in India, finds that India is still benefiting from these investments. The main sources of agricultural productivity growth in India during 1956–87 were public agricultural research and extension; expansion of irrigated area and rural infrastructure and improvement in human capital were also important contributors. The report also shows that the public benefits from private research can...
Tipo: Report
Palavras-chave: Agriculture; Research; India; Agricultural productivity; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 1999
URL: http://purl.umn.edu/37901

The Economic Effects of Early-Life Nutritional Constraints in Crossbred Cattle Bred on the NSW North Coast
Provedor de dados: 31
Autores: Alford,   Andrew R.; Cafe,   Linda M.; Greenwood,   Paul L.; Griffith,   Garry R.
Different patterns of nutrition during pregnancy and lactation can influence cow productivity and the performance of their offspring. An experiment was conducted on the North Coast of NSW whereby “low” and “high” pasture nutritional systems were imposed on a herd of Hereford cows during pregnancy, and then again from birth to weaning, with a crossover design also imposed to select offspring with extremes of growth to birth and/or weaning. Thus, four growth groups resulted – low-low, low-high, high-low, and high-high. Piedmontese and Wagyu bulls were used. After weaning, these offspring were grown out on the NSW Northern Tablelands and then finished to heavy market weights in a feedlot. The results of the experiment indicated that restricted early-life...
Tipo: Report
Palavras-chave: Beef; Early-life nutrition; Economic; Evaluation; Australia; Agribusiness; Farm Management; Livestock Production/Industries; Production Economics; Research and Development/Tech Change/Emerging Technologies; Q12; Q16.
Ano: 2007
URL: http://purl.umn.edu/37667

RURAL POPULATION GROWTH, AGRICULTURAL CHANGE AND NATURAL RESOURCE MANAGEMENT IN DEVELOPING COUNTRIES: A REVIEW OF HYPOTHESES AND SOME EVIDENCE FROM HONDURAS
Provedor de dados: 31
Autores: Pender,   John L.
"August 1999". Includes bibliographical references (p. 75-81). Published as Pender, J. 2001. Rural population growth, agricultural change and natural resource management in developing countries: a review of hypotheses and some evidence from Honduras. In Nancy Birdsall, Allen Kelley, and Steven Sinding, eds. Population Matters: Demographic Change, Poverty and Economic Growth in Developing Countries. Oxford University Press. Chapter 12.
Tipo: Working or Discussion Paper
Palavras-chave: Rural population; Environmental impact analysis; Agricultural policy; Honduras; Land management; International Development; Resource /Energy Economics and Policy.
Ano: 1999
URL: http://purl.umn.edu/97505

Raumliche Wachstumszusammenhange - Empirische Befunde Fur Deutschland
Provedor de dados: 31
Autores: Niebuhr,   Annekatrin.
Die vorliegende Studie beschäftigt sich mit Wachstumsabhängigkeiten zwischen räumlich benachbarten Gebieten in Westdeutschland im Zeitraum von 1976 bis 1996. Die Hypothese für derartige Wachstumsabhängigkeiten leitet sich aus der räumlichen Dimension von Mechanismen ab, denen ein wesentlicher Einfluss auf die regionale Entwicklung beizumessen ist - wie etwa der Faktormobilität oder technologischen Spill-Over-Effekten. Die empirische Analyse westdeutscher Regionen weist auf eine erhebliche Bedeutung distanzabhängiger Wachstumszusammenhänge hin. Es lassen sich deutliche Hinweise für einen Einfluss der räumlichen Nähe auf die Intensität der Wachstumsabhängigkeiten ermitteln. Weiterhin ist festzustellen, dass regionale Ausgleichstendenzen und...
Tipo: Working or Discussion Paper
Palavras-chave: International Development; C21; O18; R11.
Ano: 2000
URL: http://purl.umn.edu/26191

Correlation Analysis of the Rural Finance Development and Rural Economic Growth - A Case of Sichuan Province, China
Provedor de dados: 31
Autores: Lu,   Chenzhong.
Based on relevant research on rural finance development and rural economic growth by some Chinese scholars, taking Sichuan Province of China as an example, index of rural financial scale (deposit scale Y1 and credit scale Y2), index of rural financial support to agriculture (agricultural loan scale Y3, loan size of township enterprises Y4), index of rural economic development level (total output value of agriculture, forestry, animal husbandry and fishery X1, added value of township enterprises X2, growth rate of per capita net income X3) are established according to the 2000-2007 Sichuan Statistical Yearbook. Meanwhile, Gray Relational Analysis Method is used to analyze the correlation degree of rural financial development and rural economic growth....
Tipo: Thesis or Dissertation
Palavras-chave: Grey Relational Analysis; Rural finance; Rural economic growth; China; Agricultural Finance; Community/Rural/Urban Development.
Ano: 2009
URL: http://purl.umn.edu/58409

Sustaining Rapid Growth In India's Fertilizer Consumption: A Perspective Based on Composition of Use
Provedor de dados: 31
Autores: Desai,   Gunvant M.
The International Food Policy Research Institute, as part of the Conservative Group on International Agricultural Research, is profoundly concern about the new agricultural technology and the policies needed to encourage its adoption and increase its effectiveness in meeting major societal objectives. The spread of high-yielding varieties depends greatly on increased in fertilizer availability to farmers. Likewise, continued rapid growth in fertilizer uses depends on new crops varieties that can provide greater yields in response to larger doses of fertilizer. It is clear that during the next few decades the food supplies necessary to meet even minimum expected rates of population growth and growth in per capita income cannot be realized without the...
Tipo: Report
Palavras-chave: Fertilizer; India; Fertilizer industry; Crop Production/Industries.
Ano: 1982
URL: http://purl.umn.edu/42215

Comparison of the Quality Adjusting of Nonlinear Models for Organs, Carcass and Body Components in Meat-Type (Coturnix Coturnix Coturnix) and Laying-Type (Coturnix Coturnix Japonica) Quail
Provedor de dados: 89
Autores: Grieser,DO; Furlan,AC; Ribeiro,PM; Zancanela,V; Del Vesco,AP; Gasparino,E; Zardin,AMSO; Marcato,SM.
ABSTRACT The objective of this study was to evaluate the adjustment quality of nonlinear models to data organs growth, carcass and body components of meat-type (Coturnix coturnix coturnix) and japanese laying-type (Coturnix coturnix japonica) quail. A total of 1350 quails from one to 42 d old were distributed in a completely randomized design, with five replicates each. To determine the organs growth (gut, heart, liver and gizzard), carcass and body components (wing, thigh and drumstick, back and breast), two quails per repetition were slaughtered weekly. The data were evaluated in function of different nonlinear models (Logistical, Brody, Richards, Von Bertalanffy and Gompertz). All models studied adjusted the data, differing in adjustment quality. Brody...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gompertz equation; Growth parameters; Breast; Number of interaction; Strains.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400701

Growth and deposition of body components of intermediate and high performance broilers
Provedor de dados: 89
Autores: Henn,JD; Bockor,L; Ribeiro,AML; Coldebella,A; Kessler,A de M.
The objectives of the present study were to determine the parameters of Gompertz equations and to determine curves and growth rate, feed intake and body component deposition, as well as allometric coefficients of body water, protein, and fat relative to live weight of male and female broilers of intermediate performance (C44) and high performance (Cobb-500) genetic strains. In total, 384 one-d-old chicks were distributed into four treatments: male Cobb 500, male C44, female Cobb 500, and female C44, with six replicates of 16 birds, according to a completely randomized experimental design. Average body weight, weight gain, and feed intake were weekly determined, and six birds, representing the average weight of each treatment, were sacrificed to determine...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body composition; Gompertz curve; Growth rate; Cobb 500; C44.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300014

Effects of Supplemented Growth Promoters on Performance and Intestinal Morphology in Broilers Reared under Different Stocking Densities
Provedor de dados: 89
Autores: Altaf,MT; Mahmud,A; Mehmood,S; Saima,.
ABSTRACT The aim of the present study was to investigate the influence of different growth promoters on broiler performance and intestinal morphology reared under various stocking densities. A total of 900 day old (Ross-308) straight run broilers were randomly divided into fifteen treatment groups according to a completely randomized design. A 5 × 3 factorial arrangement of treatment was employed. Treatments were consisted of four growth promoters (antibiotics, prebiotics, probiotics, and symbiotics) and a control group with three stocking densities (0.046, 0.056, 0.065m2). Each treatment was replicated 6 times with 10 birds in each. Regarding growth performance, feed intake (p=0.0008), body weight (p=0.0085) and feed conversion ratio (p=0.0001) were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler growth promoters stocking density; Growth performance; Intestinal histology.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400306

Post-hatch fasting and infectious bronchitis vaccination affect growth, gastrointestinal development, and morphometric parameters of the small intestine of broiler breeders up to three weeks of age
Provedor de dados: 96
Autores: Fernandez-Alarcon,Miguel Frederico; Souza,Fernando Augusto de; Campos,Daniel Mendes Borges; Hada,Fabricio Hirota; Nogueira,Wedson Carlos Lima; Macari,Marcos; Furlan,Luiz Roberto; Furlan,Renato Luis.
ABSTRACT The influence of fasting and vaccination against infectious bronchitis (IB) on growth, gastrointestinal development, and morphometric parameters of the small intestine of newborn broiler breeders was investigated. Weight gain (WG), feed conversion ratio (FCR), gastrointestinal visceral growth, residual yolk sac, and morphometric parameters of the small intestine were measured in chicks aged up to 21 d. We showed that WG was lowest in chicks exposed to longer fasting periods (72 h), although compensatory gains with increasing age were also observed. Unvaccinated chicks performed better at seven days; however, at 21 d of age, a compensatory response led to better FCR in vaccinated birds. Allometric growth of the gastrointestinal tract was affected...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Food restriction; Gastrointestinal tract growth; Infectious bronchitis immunization; Intestinal morphometry.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100510

Promotion of cashmere growth by sulfur supplements in cashmere goats
Provedor de dados: 96
Autores: Feng,Yali; Sun,Yu; Deng,Hongwei; Cong,Yuyan.
This study was conducted to investigate effects of inorganic and organic sulfur supplements on cashmere growth and their differences. Thirty-six six-month-old female Liaoning cashmere goats with a body weight of approximately 25 kg and good health were randomly assigned to three treatments: control, ZnSO4 and HMBi (2-hydroxy-4-(methylthio) butyric acid isopropyl ester). The three groups were fed a basal diet, a ZnSO4 diet (supplemented with 0.63% ZnSO4.H2O) and an HMBi diet (supplemented with 1.27% HMBi), respectively. Blood and cashmere samples were collected at the end of the three-month experimental period. The plasma concentrations of total protein, urea nitrogen, ammonia and amino acids; the cashmere content of amino acids and sulfur contents; the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2-hydroxy-4-(methylthio) butyric acid isopropyl ester; Amino acid; Cashmere growth rate; Sulfur; ZnSO4.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013001100005

Growth performance and metabolic response of Nile tilapia fed rations supplemented with autolized yeast and zinc
Provedor de dados: 96
Autores: Signor,Altevir; Pezzato,Luiz Edivaldo; Padilha,Pedro de Magalhães; Padovani,Carlos Roberto; Barros,Margarida Maria.
This research evaluated the influence of yeast and zinc on growth performance and metabolic responses of Nile tilapia. Diets were formulated to contain 32.0% digestible protein and 3,240 kcal DE/kg diet and the following autolized yeast (%):zinc (mg/kg)relationships: 0.0:0.0; 0.0:79.5; 2.0:0.0; 0.795:79.5; 2.0:200; 4.0:400; 6.0:600; 12.0:1,200 and 14.0:1,400. It was used 135 fingerlings (7.27 ± 0.19 g), distributed in a complete random design in 27 50-L aquaria and they were fed ad libitum four times a day for 128 days. It was evaluated growth performance and metabolic responses, weight gain, apparent feed conversion; protein efficiency and survival rate; percentage of protein, ether extract, dry weight and ashes in the muscle and in the bones; ammonia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fingerlings; Growth; Metabolism; Metabolites; Minerals.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001200002

Growth dynamics and yield of melon as influenced by nitrogen fertilizer
Provedor de dados: 63
Autores: Castellanos,María Teresa; Cabello,María Jesús; Cartagena,María del Carmen; Tarquis,Ana María; Arce,Augusto; Ribas,Francisco.
Nitrogen (N) is an important nutrient for melon (Cucumis melo L.) production. However there is scanty information about the amount necessary to maintain an appropriate balance between growth and yield. Melon vegetative organs must develop sufficiently to intercept light and accumulate water and nutrients but it is also important to obtain a large reproductive-vegetative dry weight ratio to maximize the fruit yield. We evaluated the influence of different N amounts on the growth, production of dry matter and fruit yield of a melon 'Piel de sapo' type. A three-year field experiment was carried out from May to September. Melons were subjected to an irrigation depth of 100% crop evapotranspiration and to 11 N fertilization rates, ranging 11 to 393 kg ha-1 in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: LAI; LAD; Dry matter accumulation; Production functions; Leaf nitrogen concentration.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000200009

Growth and osmoregulation in Salmo salar L. juveniles 1+, 1½ + and 2+ reared under restrained salinity
Provedor de dados: 63
Autores: Gonçalves,José Fernando Magalhães; Carraça,Stela; Damasceno-Oliveira,Alfredo; Vicente,Córalia; Costa,Paulo Martins da; Lopes-Lima,Manuel; Ozório,Rodrigo Otávio de Almeida.
The freshwater phase of Atlantic salmon Salmo salar L vary between one and eight years. The reduction of the freshwater phase is desirable to reduce freshwater usage, human resources and to increase year round availability of pan-sized salmon. Three trials were conducted to investigate the possibility of supply the market in a year-round basis, with pan-sized Atlantic salmon Salmo salar L. (250-300 g) in Portugal (southern limit of the natural distribution of this species). This study primarily aimed to compare the osmoregulatory ability and growth of different fish sizes, smolts 1+ (trial 1), 1.5+ (trial 2) and 2+ (trial 3), in freshwater and seawater conditions. Additionally, effects of photoperiod were determined in smolts 1.5+ (trial 2) for both...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic salmon; Post-smolts development; Smoltification; Seawater transfer.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000100003

Bacterial strains from floodplain soils perform different plant-growth promoting processes and enhance cowpea growth
Provedor de dados: 63
Autores: Costa,Elaine Martins da; Carvalho,Fernanda de; Nóbrega,Rafaela Simão Abrahão; Silva,Jacqueline Savana; Moreira,Fatima Maria de Souza.
ABSTRACT Certain nodulating nitrogen-fixing bacteria in legumes and other nodule endophytes perform different plant-growth promoting processes. The objective of this study was to evaluate 26 bacterial strains isolated from cowpea nodules grown in floodplain soils in the Brazilian savannas, regarding performance of plant-growth promoting processes and ability to enhance cowpea growth. We also identified these strains by 16S rRNA sequencing. The following processes were evaluated: free-living biological nitrogen fixation (BNF), solubilization of calcium, aluminum and iron phosphates and production of indole-3-acetic acid (IAA). The abilities to nodulate and promote cowpea growth were evaluated in Leonard jars. Partial sequencing of the 16S rRNA gene...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Paenibacillus; Biotechnological potential; Biological nitrogen fixation; Phosphate solubilization; Indole-3-acetic acid.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000400301

Reuse of sand, crushed sugarcane and peanut hull-based substrates for cherry tomato cultivation
Provedor de dados: 63
Autores: Fernandes,Carolina; Corá,José Eduardo; Braz,Leila Trevizan.
The reuse of substrates for more than one growing season is an alternative to reduce production costs. The objective of this work was to evaluate the yield and quality fruits of the cherry tomato (Lycopersicon esculentum) grown in reused substrates. The experimental design was a complete randomized block, with a factorial array of 7 × 2 (seven substrates and two growth periods), with four replications. The seven substrates consisted of different combinations of sand (S), crushed sugarcane (CS) and peanut hull (PH). The substrates used were: S1 = S; S2 = [(2/3 S) + (1/3 CS)]; S3 = [(2/3 S) + (1/3 PH)]; S4 = [(2/3 S) + (1/6 CS) + (1/6 PH)]; S5 = [(1/2 S) + (1/2 CS)]; S6 = [(1/2 S) + (1/2 PH)] and S7 = [(1/3 S) + (1/3 CS) + (1/3 PH)]. These substrates were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lycopersicon esculentum; Size of fruits; Soilless growth.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000600011

Photosynthetic parameters and growth in seedlings of Bertholletia excelsa and Carapa guianensis in response to pre-acclimation to full sunlight and mild water stress
Provedor de dados: 36
Autores: Azevedo,Gracilene Fernandes da Costa.
Light and water are important factors that may limit the growth and development of higher plants. The aim of this study was to evaluate photosynthetic parameters and growth in seedlings of Bertholletia excelsa and Carapa guianensis in response to pre-acclimation to full sunlight and mild water stress. I used six independent pre-acclimation treatments (0, 90 (11h15-12h45), 180 (10h30-13h30), 360 (09h00-15h00), 540 (07h30-16h30) and 720 min (06h00-18h00)) varying the time of exposure to full sunlight (PFS) during 30 days, followed by whole-day outdoor exposure for 120 days. Before PFS, the plants were kept in a greenhouse at low light levels (0.8 mol m-2 day-1). The PFS of 0 min corresponded to plants constantly kept under greenhouse conditions. From the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonia; Forest tree species; Photosynthesis; Stomatal conductance.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672014000100007

Age and growth parameters of the dourado Salminus brasiliensis (Cuvier, 1816) from the river Cuiabá, Mato Grosso State, Brazil
Provedor de dados: 3
Autores: Zuliani, Marina Soares; Ambrosio, Angela Maria; Francisco, Talitha Mayumi; Balbi, Thiago José; Okada, Edson Kiyoshi; Gomes, Luiz Carlos.
Age and growth parameters of Salminus brasiliensis (Curvier, 1816) from the Manso Reservoir and from the river Cuiabá are estimated by their fish scales. Sampling was performed between January and December 2006. There was a linear relationship between the standard length of the fish (cm) and the scale radius (mm) (r = 0.93). The coefficients of variation of standard mean lengths calculated for fish of the same age class were low (&gt;19.0%), while temporal variation analysis of mean marginal increment showed that growth ring was annually formed in November, possibly related to the species’s reproductive period between November and January. The maximum number of rings was 12 for both sexes. The growth curve for length expressed by von Bertalanffy model was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Scales; Growth rings; Von Bertalanffy; Characidae ecologia e limnologia.
Ano: 2016
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/27868

Growth, longevity, and juvenile recruitment of the white shrimp Litopenaeus schmitti (Burkenroad, 1936) (Decapoda: Penaeoidea) in southeastern Brazil
Provedor de dados: 3
Autores: Miazaki, Lizandra Fernandes; Santos, Ana Paula Freitas dos; Salvati, Dalilla da Silva; Simões, Sabrina Morilhas; Costa, Rogério Caetano da.
 Litopenaeus schmitti is one of the most commercially exploited penaeids on the southeastern and southern Atlantic coast of Brazil. Information about juvenile recruitment and growth patterns of individuals is important for management programs. The present study estimated the growth parameters, longevity, and recruitment of L. schmitti in the region of Ubatuba, São Paulo State. The growth parameters of individuals were estimated by the Bertalanffy growth model, and longevity was estimated with the inverted Bertalanffy equation. The growth parameters were, for females and males respectively: CL∞ = 53.10 mm and 43.23 mm, k = 1.82 year-1 and 2.19 years-1, t0= 1.10 and 0.69. Longevity was calculated to be 2.27 years for females and 2.10 years for males....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dendrobranchiata; Shrimp fisheries; Closed season; Bertalanffy; Growth coefficient.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/40379

Dual Effect of Audible Sound Technology on the Growth and Endogenous Hormones of Strawberry
Provedor de dados: 111
Autores: Hassanien, Reda Hassanien Emam; LI, Bao Ming.
ABSTRACTSound waves could improve the growth and increase yield. However, it could be a form of environmental stresses. Therefore, the aim of this study was to investigate the effect of audible sound on the growth and endogenous hormones of strawberry plants (Fragaria_ananassa). Five endogenous hormones, namely indole-3-acetic acid (IAA), gibberellin (GA), abscisic acid (ABA), jasmonic acid (JA) and Zeatin Riboside (ZR) have been investigated. Plants exposed to sound frequency of 0.1 - 1 kHz and sound pressure level (SPL) of 70 - 100 dB for 2 hours, 3 hours and 5 hours at different growth stages. Results revealed that plants have different responses to sound waves at different growth stages. Acoustic frequency could accelerate the blooming and the...
Tipo: Info:eu-repo/semantics/article
Ano: 2020
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5841

Does polymer-based encapsulation enhance performance of plant growth promoting microorganisms? A meta-analysis view
Provedor de dados: 115
Autores: Pacheco-Aguirre,J. Alberto; Ruíz-Sánchez,Esau; Ballina-Gómez,H. Salomón; Alvarado-López,C. Juan.
Abstract Various studies have been undertaken to evaluate the effect of polymer-based encapsulation on performance of plant growth promoting microorganism. However there is no systematic analysis about the performance of these microorganisms when encapsulated in a polymer-based matrix. Relevant published papers were retrieved by conducting searches in Google Scholar, Only Library, Science Direct, Springer Journal, Taylor &amp; Francis and Wiley Online Library. An examination of 117 articles was carried out and of those only 11 satisfied our criteria for inclusion into the meta-analysis. From these articles, we selected 41 cases to be evaluated. We used as keywords “microcapsules”, “capsules”, “microorganisms”, “growth”, “promoting”, “germination”...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacillus sp.; Inoculant; Microcapsules; Plant growth; Seed germination.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000200173

Prohexadione calcium reduces vegetative growth and increases fruit set of ‘Smith’ pear trees, in Southern Brazil
Provedor de dados: 53
Autores: Carra,Bruno; Spagnol,Daniel; Abreu,Everton Sozo de; Pasa,Mateus da Silveira; Silva,Carina Pereira da; Hellwig,Cristiano Geremias; Fachinello,José Carlos.
ABSTRACT Prohexadione calcium (P-Ca) has been reported to effectively control shoot growth in several pear cultivars, but with a few reports about its efficiency under the climatic conditions of southern Brazil. Therefore, the objective of this study was to evaluate vegetative growth, production, and fruit quality of ‘Smith’ pear trees in response to the use of different rates of P-Ca in the climatic conditions of southern Brazil. The experiment was conducted during the 2013/2014 and 2014/2015 seasons, in a 6-year-old ‘Smith’ pear orchard, trained to a central-leader system, with spacing of 1.5 × 4.8 m, grafted onto Pyrus calleryana Decne. Different P-Ca rates were applied (100, 200, 300, and 400 mg∙L–1) in different stages: first, in early spring for all...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pyrus sp.; Vigor; Plant growth regulators; Return bloom; Fruit quality.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000300360

Salmonella enterica serovar Typhi plasmid pR ST98 enhances intracellular bacterial growth and S. typhi-induced macrophage cell death by suppressing autophagy
Provedor de dados: 55
Autores: He,Peiyan; Wu,Shuyan; Chu,Yuanyuan; Yang,Yanru; Li,Yuanyuan; Huang,Rui.
OBJECTIVES: Plasmid pR ST98 is a hybrid resistance-virulence plasmid isolated from Salmonella enterica serovar Typhi (S. typhi). Previous studies demonstrated that pR ST98 could enhance the virulence of its host bacteria. However, the mechanism of pR ST98-increased bacterial virulence is still not fully elucidated. This study was designed to gain further insight into the roles of pR ST98 in host responses. METHODS: Human-derived macrophage-like cell line THP-1 was infected with wild-type (ST8), pR ST98-deletion (ST8-ΔpR ST98), and complemented (ST8-c-pR ST98) S. typhi strains. Macrophage autophagy was performed by extracting the membrane-unbound LC3-I protein from cells, followed by flow cytometric detection of the membrane-associated fraction of LC3-II....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plasmid pR ST98; Macrophage; Autophagy; Intracellular bacterial growth; Cell death.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702012000300008

Differential activity of a lectin from Solieria filiformis against human pathogenic bacteria
Provedor de dados: 56
Autores: Holanda,M.L.; Melo,V.M.M.; Silva,L.M.C.M.; Amorim,R.C.N.; Pereira,M.G.; Benevides,N.M.B.
A lectin isolated from the red alga Solieria filiformis was evaluated for its effect on the growth of 8 gram-negative and 3 gram-positive bacteria cultivated in liquid medium (three independent experiments/bacterium). The lectin (500 µg/mL) stimulated the growth of the gram-positive species Bacillus cereus and inhibited the growth of the gram-negative species Serratia marcescens, Salmonella typhi, Klebsiella pneumoniae, Enterobacter aerogenes, Proteus sp, and Pseudomonas aeruginosa at 1000 µg/mL but the lectin (10-1000 µg/mL) had no effect on the growth of the gram-positive bacteria Staphylococcus aureus and B. subtilis, or on the gram-negative bacteria Escherichia coli and Salmonella typhimurium. The purified lectin significantly reduced the cell density...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Red alga; Solieria filiformis; Human pathogenic bacteria; Lectin; Antibacterial activity; Klebsiella pneumoniae.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005001200005

Inhibition of STAT3 by RNA interference suppresses angiogenesis in colorectal carcinoma
Provedor de dados: 56
Autores: Qian,W.F.; Guan,W.X.; Gao,Y.; Tan,J.F.; Qiao,Z.M.; Huang,H.; Xia,C.L.
In order to investigate signal transduction and activation of transcription 3 (STAT3) signaling on angiogenesis in colorectal carcinoma (CRC) after inhibiting STAT3 expression, we constructed the HT-29-shSTAT3 cell line by lentivirus-mediated RNAi. Cell growth was assessed with MTT and the cell cycle distribution by flow cytometry. CRC nude mouse models were established and tumor growth was monitored periodically. On day 30, all mice were killed and tumor tissues were removed. Microvessel density (MVD) was determined according to CD34-positive staining. The expression of vascular endothelial growth factor A (VEGFA), matrix metalloproteinase-2 (MMP2) and basic fibroblast growth factor (FGF2) was monitored by quantitative real-time PCR and Western blot...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: STAT3; RNA interference; Colorectal carcinoma; Angiogenesis; VEGFA; MMP2; FGF2.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011001200005

Do intrauterine growth restriction and overweight at primary school age increase the risk of elevated body mass index in young adults?
Provedor de dados: 56
Autores: Bettiol,H.; Sabbag Filho,D.; Haeffner,L.S.B.; Barbieri,M.A.; Silva,A.A.M.; Portela,A.; Silveira,P.; Goldani,M.Z.
Obesity is one of the rising public health problems characterized as a risk factor for many chronic diseases in adulthood. Early life events such as intrauterine growth restriction, as well as life style, are associated with an increased prevalence of this disease. The present study was performed to determine if intrauterine growth restriction interacts with overweight at primary school age to affect body mass index (BMI) in young adults. From June 1, 1978 to May 31, 1979, 6827 singleton liveborns from Ribeirão Preto, São Paulo State, Brazil, corresponding to 98% of all births at the 8 maternity hospitals, were examined and their mothers were interviewed. Samples from the initial cohort were examined again at primary school age (8 to 11 years of age) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Intrauterine growth restriction; Overweight; Body mass index; Obesity.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000900011

The relationship between fungi growth and aflatoxin production with ergosterol content of corn grains
Provedor de dados: 58
Autores: Castro,Maria Fernanda Penteado Moretzsohn de; Bragagnolo,Neura; Valentini,Sílvia Regina de Toledo.
The relationships between fungal growth and ergosterol content and between aflatoxins B1 and B2 production and ergosterol content were verified in corn grains. In the first experiment, fungal growth and ergosterol content were monitored during incubation of corn grains presenting water activities of 0.85a w and 0.92a w at 25ºC over a period of 18 days. For the Taiúba variety, the fungi growth and ergosterol content increased more rapidly for 0.92a w than 0.85a w. Maximum ergosterol levels were 2.8 and 4.6 µg/g, respectively, for 0.85a w and 0.92a w. For the Cargill hybrid 606, a more pronounced increase in fungal growth was verified just at the end of the incubation period, mainly for 0.92a w when an acentuated increase in ergosterol content was also...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Corn grains; Ergosterol; Fungal growth; Aflatoxins.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000100004

Antioxidant response of cowpea co-inoculated with plant growth-promoting bacteria under salt stress
Provedor de dados: 58
Autores: Santos,Alexandra de Andrade; Silveira,Joaquim Albenísio Gomes da; Bonifacio,Aurenivia; Rodrigues,Artenisa Cerqueira; Figueiredo,Márcia do Vale Barreto.
Abstract Soil salinity is an important abiotic stress worldwide, and salt-induced oxidative stress can have detrimental effects on the biological nitrogen fixation. We hypothesized that co-inoculation of cowpea plants with Bradyrhizobium and plant growth-promoting bacteria would minimize the deleterious effects of salt stress via the induction of enzymatic and non-enzymatic antioxidative protection. To test our hypothesis, cowpea seeds were inoculated with Bradyrhizobium or co-inoculated with Bradyrhizobium and plant growth-promoting bacteria and then submitted to salt stress. Afterward, the cowpea nodules were collected, and the levels of hydrogen peroxide; lipid peroxidation; total, reduced and oxidized forms of ascorbate and glutathione; and superoxide...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant-bacteria interactions; Reactive oxygen species; Salinity.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000300513

The effect of citric acid supplementation on growth performance, phosphorus absorption and retention in rainbow trout (Oncorhynchus mykiss) fed a low-fishmeal diet
Provedor de dados: 118
Autores: Hernández,Adrián J; Satoh,Shuichi; Kiron,Viswanath.
A.J. Hernández, S. Satoh, and V. Kiron. 2013. The effect of citric acid supplementation on growth performance, phosphorus absorption and retention in rainbow trout (Oncorhynchus mykiss) fed a low-fishmeal diet. Cien. Inv. Agr. 40(2): 397-406. Two feeding experiments were conducted to investigate the effect of a low-phosphorus (P) diet in combination with citric acid (CA) on rainbow trout growth performance and P utilization. In the first 12-week trial, duplicate groups of 30 fish (12.0±1.7 g) were fed one of five diets. The basal diet was formulated with low-P protein sources and 15% fishmeal (FM) without inorganic P supplementation. The test diets contained 0.5% monocalcium phosphate (MCP), 3% CA or both. A FM-based diet served as the positive control....
Tipo: Journal article
Palavras-chave: Citric acid; Growth performance; Phosphorus utilization; Rainbow trout.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000200014

Logistic growth models of China pinks, cultivated on seven substrates, as a function of degree days
Provedor de dados: 65
Autores: Milani,Marília; Lopes,Sidinei José; Bellé,Rogério Antônio; Backes,Fernanda Alice Antonello Londero.
ABSTRACT: The objective of this study was to characterize the height (H) and leaf number (LN) of China pinks, grown in seven substrates, as a function of degree days, using the logistic growth model. H and LN were measured from 56 plants per substrate, for 392 plants in total. Plants that were grown on substrates formed of 50% soil with 50% rice husk ash (50% S + 50% RH) and 80% rice husk ash with 20% worm castings (80% RH + 20% W) had the longest vegetative growth period (74d), corresponding to 1317.9ºCd. The logistic growth model, adjusted for H, showed differences in the estimation of maximum expected height (α) between the substrates, with values between 10.47cm for 50% S + 50% RH and 35.75cm for Mecplant(r). When α was estimated as LN, variation was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dianthus chinensis L; Growth model; Protected environment; Parameter estimation.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001101924

A review of image-based tools for automatic fish ageing from otolith features
Provedor de dados: 5
Autores: Carbini, Sebastien; Chessel, Anatole; Benzinou, Abdesslam; Fablet, Ronan; Mahe, Kelig; De Pontual, Helene.
Most of European fish stocks are assessed using age-based models, and otolith interpretation for age estimations costs several million euros annually. In this context, automated ageing systems would provide a mean to 1) standardize ageing, 2) control ageing consistency within and between ageing laboratories 3) build interpreted image data bases ensuring the information conservation and sharing and 4) improve growth studies while reducing the cost of the acquisition of age data. This paper presents a review of different image-based tools for automatic fish ageing from otolith features within the framework of AFISA (EU STREP project on Automated FISh Ageing coordinated by Ifremer). The full automatic ageing process can be divided into three main steps: 1)...
Tipo: Text
Ano: 2008
URL: http://archimer.ifremer.fr/doc/00024/13519/10546.pdf

Growth curves of Nile tilapia (Oreochromis niloticus) strains cultivated at different temperatures - doi: 10.4025/actascianimsci.v35i3.19443
Provedor de dados: 2
Autores: Santos, Vander Bruno; Apta -Agencia de Tecnologia dos Agronegócios; Mareco, Edson Assunção; Universidade Estadual Paulista; Silva, Maeli Dal Pai; Instituto de Biociências, UNESP. Botucatu.
Growth of Red, GIFT and Supreme Nile tilapia strains were evaluated. Fish were cultivated in indoor recirculation systems in 0.5 m³ tanks with controlled temperatures of 22, 28 and 30°C. Random samples of 20 fish from each strain (10 fish tank-1) were weighed at day 7, 30, 60, 90 and 120. Exponential model (y=AeKx) and Gompertz model (y = Aexp(-Be-Kx)) were fitted and the estimates parameters were obtained by Weighted Least Squares. At 22°C, Red, GIFT and Supreme strain presented similar growth and fit of exponential model. GIFT and Supreme strain presented higher growth rate at 30°C of cultivation when compared to Red strain. Temperature influences weight and age at the inflection point. The temperature of cultivation influences the growth description of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 50603000 exponential model; Growth rate; Supreme; GIFT; Red tilapia; Weighted model Exponential model; Growth rate; Supreme; GIFT; Red tilapia; Weighted model.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/19443

Remote Sensing-Driven Pacific Oyster (Crassostrea gigas) Growth Modeling to Inform Offshore Aquaculture Site Selection
Provedor de dados: 5
Autores: Palmer, Stephanie C. J.; Gernez, Pierre M.; Thomas, Yoann; Simis, Stefan; Miller, Peter I.; Glize, Philippe; Barillé, Laurent.
Aquaculture increasingly contributes to global seafood production, requiring new farm sites for continued growth. In France, oyster cultivation has conventionally taken place in the intertidal zone, where there is little or no further room for expansion. Despite interest in moving production further offshore, more information is needed regarding the biological potential for offshore oyster growth, including its spatial and temporal variability. This study shows the use of remotely-sensed chlorophyll-a and total suspended matter concentrations retrieved from the Medium Resolution Imaging Spectrometer (MERIS), and sea surface temperature from the Advanced Very High Resolution Radiometer (AVHRR), all validated using in situ matchup measurements, as input to...
Tipo: Text
Palavras-chave: Satellite image; Time series; Bivalve; Dynamic energy budget; Growth modeling; MERIS; AVHRR; Marine spatial planning.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00605/71722/70185.pdf

Report of the Workshop on Growth-increment Chronologies in Marine Fish: climate-ecosystem interactions in the North Atlantic 2 (WKGIC2). 18-22 April 2016 Esporles, Mallorca, Spain
Provedor de dados: 5
Autores: ICES.
Over the past several decades, thousands of otoliths, bivalve shells, and scales have been collected for the purposes of age determination and remain archived in European and North American fisheries laboratories. Advances in digital imaging and computer software combined with techniques developed by tree-ring scientists provide a means by which to extract additional levels of information in these calcified structures and generate annually resolved (one value per year), multidecadal time-series of population-level growth anomalies. Chemical and isotopic properties may also be extracted to provide additional information regarding the environmental conditions these organisms experienced.Given that they are exactly placed in time, chronologies can be directly...
Tipo: Text
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00334/44555/44276.pdf

Long-term surface pCO(2) trends from observations and models
Provedor de dados: 5
Autores: Tjiputra, Jerry F.; Olsen, Are; Bopp, Laurent; Lenton, Andrew; Pfeil, Benjamin; Roy, Tilla; Segschneider, Joachim; Totterdell, Ian; Heinze, Christoph.
We estimate regional long-term surface ocean pCO(2) growth rates using all available underway and bottled biogeochemistry data collected over the past four decades. These observed regional trends are compared with those simulated by five state-of-the-art Earth system models over the historical period. Oceanic pCO(2) growth rates faster than the atmospheric growth rates indicate decreasing atmospheric CO2 uptake, while ocean pCO(2) growth rates slower than the atmospheric growth rates indicate increasing atmospheric CO2 uptake. Aside from the western subpolar North Pacific and the subtropical North Atlantic, our analysis indicates that the current observation-based basin-scale trends may be underestimated, indicating that more observations are needed to...
Tipo: Text
Palavras-chave: Surface pCO(2); Ocean CO2 sinks; Earth system models; CMIP5 projections; Ocean biogeochemistry.
Ano: 2014
URL: https://archimer.ifremer.fr/doc/00291/40228/38691.pdf

Effects of Organic and Inorganic Nitrogen on the Growth and Production of Domoic Acid by Pseudo-nitzschia multiseries and P. australis (Bacillariophyceae) in Culture
Provedor de dados: 5
Autores: Martin-jezequel, Veronique; Calu, Guillaume; Candela, Leo; Amzil, Zouher; Jauffrais, Thierry; Sechet, Veronique; Weigel, Pierre.
Over the last century, human activities have altered the global nitrogen cycle, and anthropogenic inputs of both inorganic and organic nitrogen species have increased around the world, causing significant changes to the functioning of aquatic ecosystems. The increasing frequency of Pseudo-nitzschia spp. in estuarine and coastal waters reinforces the need to understand better the environmental control of its growth and domoic acid (DA) production. Here, we document Pseudo-nitzschia spp. growth and toxicity on a large set of inorganic and organic nitrogen (nitrate, ammonium, urea, glutamate, glutamine, arginine and taurine). Our study focused on two species isolated from European coastal waters: P. multiseries CCL70 and P. australis PNC1. The nitrogen...
Tipo: Text
Palavras-chave: Pseudo-nitzschia; Toxic diatoms; Nitrogen; Amino acids; Domoic acid.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00308/41912/41188.pdf

Toward a complete model of radial growth in Pinus edulis: the effects of CO2 and prior years
Provedor de dados: 17
Autores: C. Susannah Tysor; Amy Whipple; George Koch.
_Pinus edulis_ (pi&amp;#xf1;on pine) is found across 35% of the Colorado Plateau and is a foundation species in the pi&amp;#xf1;on-juniper woodlands of the Southwest. Pi&amp;#xf1;on pine mortality in the recent drought has been high and climate change models forecast a warmer future for the region, which will increase pi&amp;#xf1;on pine water stress.  In order to predict the fate of pi&amp;#xf1;on pine, we must understand how various climatic factors influence pi&amp;#xf1;on growth. Tree rings provide a climate sensitive record of growth ideal for exploring the relationship between growth and climate.  We used 78 pi&amp;#xf1;on pine trees cored at Red Mountain in northern Arizona in 1998 to predict tree ring width and pi&amp;#xf1;on pine mortality, using...
Tipo: Poster
Palavras-chave: Ecology; Plant Biology.
Ano: 2009
URL: http://precedings.nature.com/documents/3613/version/1

Etude de l'âge et de la croissance de deux espèces de dentés &lt;Dentex dentex&gt; et de &lt;Dentex maroccanus&gt; des côtes Tunisiennes
Provedor de dados: 20
Autores: Kraiem, M.M.; Chammam-Abdelkader, B.; El Abed, A.
The survey of age and growth of two Dentex species &lt;Dentex dentex&gt; and &lt;Dentex maroccanus&gt; from the Tunisian coasts shows a difference of the growth rate between the two species with a faster growth for &lt;Dentex dentex&gt;. Any difference of growth has been noticed within the same species. However females present superior maximal sizes comparing to the males for the two species. Concerning the weight growth, the males of &lt;Dentex dentex&gt; seemed heavier than the females, whereas for &lt;Dentex maroccanus&gt; the females show a weight growth superior to that of the males.
Tipo: Journal Contribution
Palavras-chave: Âge; Croissance &lt; Dentex maroccanus&gt; &lt; Dentex dentex&gt; Age Growth Fish Growth Age http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_186.
Ano: 2004
URL: http://hdl.handle.net/1834/1166

Modeling growth of different lucerne cultivars and their effect on soil water dynamics
Provedor de dados: 21
Autores: Raza, Amir; Friedel, Juergen K.; Moghaddam, Ali; Ardakani, M.Reza; Loiskandl, Willibald; Himmelbauer, Margarita; Bodner, Gernot.
Lucerne (Medicago sativa L.) is a perennial legume with high importance as fodder crop under organic farming. Our study analyzes biomass growth and influence on soil water dynamics of three lucerne cultivars in a field experiment and using the simulation model CropSyst. The objective was to evaluate the model for a perennial legume crop, study the relation of cultivar traits with soil water relations and derive a lucerne ideotype for temperate, semi-arid conditions. Two cultivars of European origin (Sitel and Niva)were compared to an Iranian one (Mohajeran). Measurements were made under irrigated (non-water limited) and rain-fed (water limited) conditions. Sitel achieved a cumulative biomass (dry matter yield)of 36.8 t ha−1 (irrigated) and 25.3 t ha−1...
Tipo: Journal paper
Palavras-chave: "Organics" in general; Crop husbandry; Environmental aspects.
Ano: 2013
URL: http://orgprints.org/22511/13/22511.pdf

BANCOSOL: EL RETO DEL CRECIMIENTO EN ORGANIZACIONES DE MICROFINANZAS
Provedor de dados: 31
Autores: Vega,   Claudio Gonzalez; Schreiner,   Mark; Meyer,   Richard L.; Meza,   Jorge Rodriguez; Navajas,   Sergio.
This paper focuses on the difficulties inherent in the prudent management of growth of microfinance organizations and on potential limits to the increased efficiency, profitability, and sustainability expected from growth and large size.  The paper addresses both positive and negative implications of rapid growth for microfinance organizations.  The experience of BancoSol in Bolivia is used to illustrate these questions.  Building upon the successful experience of PRODEM, BancoSol was chartered as a private commercial bank in 1992.  The paper discusses the intangible assets inherited from PRODEM that gave BancoSol a head start and the additional advantages that resulted from formalization as a bank, in particular from the authorization to mobilize...
Tipo: Working or Discussion Paper
Palavras-chave: Agricultural Finance; Financial Economics.
Ano: 1996
URL: http://purl.umn.edu/28328

Growth and productivity of lettuce cultivars under protected environment with and without thermal reflector screen
Provedor de dados: 22
Autores: Gonçalves-Trevisoli, Edilaine Della Valentina; Dartora, Janaína; Mendonça, Heloísa Ferro Constâncio; Rissato, Bruna Broti; Dildey, Omari Dangelo Forlin; Coltro-Roncato, Sidiane; Santana, José Carlos de; Klosowski, Élcio Silvério; Echer, Marcia de Morais; Tsutsumi, Cláudio Yuji.
The aim of the work was to evaluate the growth and productivity of lettuce cultivars cultivated in greenhouse with and without thermo-reflective screens. The experiment was conducted in greenhouse in Assis Chateaubriand, Paraná State. The experimental design was in a randomized block design with six replications and treatments arranged in a 2 x 4 factorial. The first factor consisted of culture environments (with and without thermo-reflective screens 50%) and the second of four cultivars of lettuce (Itapuã, Paola, Vera and Verônica). Five samples were performed weekly for evaluation of dry matter and leaf area used to obtain the absolute and relative growth rates, net assimilation rates, leaf area ratio and specific leaf area. At the last evaluation were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth analysis; Photosynthesis; Lactuca sativa L.; Solar radiation.
Ano: 2017
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/14033

COMBINATION OF Azospirillum brasilense AND Bradyrhizobium japonicum IN THE PROMOTION OF INITIAL CORN GROWTH
Provedor de dados: 196
Autores: Pereira, Gabriel Monteiro Aguiar; Menezes, Renato de Carvalho; Cunha, Marcos Gomes da; Carrer Filho, Renato.
Biological formulations used as inoculants are increasingly present in grasses, especially in corn. Positive results in promoting plant growth, with different associations with diazotrophic bacteria, show these capacities of interaction to act as plant growth regulators, making it a promising alternative with a low environmental impact. Thus, this study aimed to evaluate the efficiency of inoculation and co-inoculation of nodulating and non-nodulating diazotrophic bacteria as promoters of initial growth in corn plants. Therefore, the bacteria Azospirillum brasilense (UFG21 strain), Bradyrhizobium japonicum (commercial product), and their co-inoculation were used in seed treatment. The evaluations consisted of growth measuring of the root system and shoot...
Tipo: Info:eu-repo/semantics/article
Ano: 2021
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/5360

COMPATIBILITY OF AZOXYSTROBIN AND CYPROCONAZOLE ON PLANT GROWTH-PROMOTING MICROORGANISMS
Provedor de dados: 196
Autores: Rocha, Weslany Silva; Silva, Mara Caroline Alves da; Machado Filho, Gilberto Coutinho; dos Santos, Mauro Gomes; Chagas Júnior, Aloísio Freitas; Santos, Manoel Mota dos.
Avoiding the toxicity effect of chemical fungicides on rhizobacteria is a sustainable alternative for agroecosystem management. Rhizobacteria, whose bioprotective and plant growth-promoter potential have been reported in the literature, lack studies on their performance in integrated management with pesticides. Thus, this study aimed to evaluate the effects of azoxystrobin + cyproconazole on the growth of Bacillus subtilis, Streptomyces seoulensis, and Bradyrhizobium japonicum. Three independent experiments were set up, i.e., one for each microorganism, and carried out in a completely randomized design in a factorial scheme (3 × 6), with three doses (recommended by the manufacturer, half, and twice) and six periods of evaluations (48, 96, 144, 192, 240,...
Tipo: Info:eu-repo/semantics/article
Ano: 2020
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/5281

Modeling and Prediction of Future Urban Growth in the Charleston Region of South Carolina: a GIS-based Integrated Approach
Provedor de dados: 7
Autores: Allen, Jeffery; Clemson University; jeff@strom.clemson.edu; Lu, Kang; Clemson University; klu@strom.clemson.edu.
The complexity of urban systems makes it difficult to adequately address their changes using a model based on a single approach. In this research, we developed a GIS-based integrated approach to modeling and prediction of urban growth in terms of land use change. The model was built upon a binomial logistic framework, coupled with a rule-based suitability module and focus group involvement, and is designed to predict land transition probabilities and simulate urban growth under different scenarios. The model was calibrated in the Charleston region of South Carolina through a GIS-facilitated participatory process involving both statistical assessment and human evaluation. The model achieved high overall success rates, although its predictive power varied...
Tipo: Peer-Reviewed Reports
Palavras-chave: Charleston; Focus group; Geographic information system; Land use prediction; Logistic regression model; Rule-based model; Urban growth modeling.
Ano: 2003

Old-growth Policy
Provedor de dados: 7
Autores: Vosick, Diane; Ecological Restoration Institute; Diane.Vosick@nau.edu; Ostergren, David M; Northern Arizona University School of Forestry; david.ostergren@nau.edu; Murfitt, Lucy; ;.
Most federal legislation and policies (e.g., the Wilderness Act, Endangered Species Act, National Forest Management Act) fail to speak directly to the need for old-growth protection, recruitment, and restoration on federal lands. Various policy and attitudinal barriers must be changed to move beyond the current situation. For example, in order to achieve the goal of healthy old growth in frequent-fire forests, the public must be educated regarding the evolutionary nature of these ecosystems and persuaded that collaborative action rather than preservation and litigation is the best course for the future of these forests. Land managers and policy makers must be encouraged to look beyond the single-species management paradigm toward managing natural...
Tipo: Peer-Reviewed article
Palavras-chave: Diameter caps; Federal employee liability; Institutional barriers; Mexican spotted owl; Northern goshawk; Preservationist philosophy; Public education; Wildland fire use.
Ano: 2007

Callus culture for biomass production of milk thistle as a potential source of milk clotting peptidases
Provedor de dados: 69
Autores: Cimino,Cecilia; Vairo Cavalli,Sandra; Spina,Francisco; Natalucci,Claudia; Priolo,Nora.
The objective of this work was the optimization of the conditions of in vitro culture for callus production of Silybum marianum (L.) Gaertn. (Asteraceae). Sections of cotyledons, previously disinfected by washing successively with ethanol 70&amp;ordm;, NaClO (10% w/v) and Tween 20 (0.05% v/v) and rinsing with sterile distilled water, were used as explants. For its initial culture, B5 medium supplemented with BA and 2,4-D solidified with phytagel was used, and a 63% survival was achieved. To obtain callus, two solid media were assayed (S1 and S2) using B5 medium supplemented with growth regulators (BA and 2,4-D or NAA and BA, respectively). The calli were grown at 25&amp;ordm;C during 45 days in darkness. Growth kinetics was studied using S1 medium...
Tipo: Journal article
Palavras-chave: Asteraceae; Callus; Rhizogenesis; Silybum marianum.
Ano: 2006
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000300012

Improved growth model for two-stage continuous cultures of Lactobacillus helveticus
Provedor de dados: 69
Autores: Bouguettoucha,Abdallah; Balannec,Béatrice; Nacef,Saci; Amrane,Abdeltif.
An unstructured model for growth and lactic acid production during two-stage continuous cultures of Lactobacillus helveticus was previously developed. The Verlhust model was considered to describe growth kinetics. Production models was based on modified Luedeking-Piret expressions involving an inhibitory effect for the first stage (seed culture) and a nutritional limitation effect for the second stage (culture). To account for the decrease of the biomass concentration observed in the second stage, the dilution rate Dc was replaced by an exponential term of the dilution rate &lt;img border=0 width=84 height=36 src="http://fbpe/img/ejb/v13n5/a07/image002.gif" align=middle&gt;in the growth and product relations. Contrarily to the previous model, the important...
Tipo: Journal article
Palavras-chave: Continuous culture; Growth; Lactic acid fermentation; Substrate limitation; Unstructured models.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000500007

Trametes versicolor growth and laccase induction with by-products of pulp and paper industry
Provedor de dados: 69
Autores: Rebelo Barreto Xavier,Ana Maria; Mora Tavares,Ana Paula; Ferreira,Rita; Amado,Francisco.
The cultivation of Trametes versicolor for laccase production and cell growth were strongly dependent on experimental conditions namely physical and chemical parameters as well as nutrient availability and inducer stimulation. Biomass growth was compared for a rich medium and for a defined medium in two different temperatures. The best temperature was 28ºC and the maximum specific growth rates were µmax = 0.083 h-1 for the rich medium and µmax = 0.043 h-1 for the defined medium. It was clearly shown that laccase production is not associated with cell growth, indicating that this ligninolytic enzyme must be produced in the defined medium by a secondary metabolism. In order to obtain laccase induction, addition of solid lignin, lignosulphonates, veratryl...
Tipo: Journal article
Palavras-chave: Inducers; Laccase; Pulp and paper by-products; Trametes versicolor.
Ano: 2007
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582007000300012

AgNO3: a potential regulator of ethylene activity and plant growth modulator
Provedor de dados: 69
Autores: Kumar,Vinod; Parvatam,Giridhar; Ravishankar,Gokare Aswathanarayana.
The aim of this review is to critically analyze the role of silver nitrate (AgNO3) in modulating plant growth and development. In recent years, basic studies on ethylene regulation opened new vistas for applied research in the area of micro-propagation, somatic embryogenesis, in vitro flowering, growth promotion, fruit ripening, and sex expression. Silver nitrate has proved to be a very potent inhibitor of ethylene action and is widely used in plant tissue culture. Few properties of silver nitrate such as easy availability, solubility in water, specificity and stability make it very useful for various applications in exploiting plant growth regulation and morphogenesis in vivo and in vitro. Silver ion mediated responses seem to be involved in polyamines,...
Tipo: Journal article
Palavras-chave: Calcium; Ethylene; Morphogenesis; Polyamines; Silver nitrate; Somatic embryogenesis.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582009000200008

Effect of the production or use of mixtures of bakers’ or brewers’ yeast extracts on their ability to promote growth of lactobacilli and pediococci
Provedor de dados: 69
Autores: Champagne,Claude P; Gaudreau,Hélène; Conway,John.
Three brewers’ and three bakers’ yeast extracts (YE) were obtained from five commercial suppliers. They were added to microbiological media and their growth-promoting properties were examined using four lactic cultures (Lactobacillus casei EQ28 and EQ85, Lactobacillus acidophilus EQ57, Pediococcus acidilactici MA18/5-M). Bakers’ YE have a higher total nitrogen content than brewers’ YE, but there was not always a correlation between the nitrogen content and growth. A systematic preference for bakers’ YE over brewers’ YE was only encountered with Lb. casei EQ85, but the other lactic cultures had variable reactions to the source of YE. With Lb. casei EQ85 and Pc. acidilactici 17/5M, mixing of the two sources of YE gave progressively higher growth as a...
Tipo: Journal article
Ano: 2003
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582003000300004

CHEMICAL AGENTS AND SHADING LEVELS FOR THE PRODUCTION OF PEPPER SEEDLINGS
Provedor de dados: 70
Autores: Binotti,Eliana D. C.; Costa,Edilson; Binotti,Flávio F. da S.; Batista,Thiago B.
ABSTRACT The aim of this study was to evaluate protected cultivation environments with different levels of shading and application of foliar chemical agents, on growth, photosynthetic pigments and seedling quality of Capsicum frutensens L. The experiment was developed at the State University of Mato Grosso do Sul, University Unit of Cassilândia, with chili pepper. Three cultivation environments (screen of 18, 35 and 50% of shading) and six leaf chemical agents were used [(1) control – without application; (2) Nitrogen (N) 1%; (3) Paclobutrazol 50 mg L-1 + N 1%; (4) Auxin 0.05 g L-1 + N 1%; (5) Gibberellin 0.05 g L-1 + N 1%; and (6) Auxin 0.05 g L-1 + Gibberellin 0.05 g L-1 + N 1%]. Each environment was considered an experiment in which the completely...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Auxin; Capsicum frutensens L; Gibberellin; Light; Nitrogen; Paclobutrazol.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000400450

EFFECTS OF PHOTOSELECTIVE SHADE NETS ON EARLY GROWTH OF SUGARCANE SEEDLINGS
Provedor de dados: 70
Autores: Cordeiro Júnior,José J. F.; Cavalcanti,Sávio D. L.; Souza,Rayanne T. de A.; Batista,Pedro H. D.; Guiselini,Cristiane.
ABSTRACT Sugarcane has a great economic interest in Brazil, so it needs technologies to increase its yield strength, especially for seedling production. This study aimed to ascertain the influence of shading nets on early growth and development of pre-sprouted sugarcane seedlings. An experiment was conducted in a protected environment, in the Rural Federal University of Pernambuco (UFRPE), in Recife-PE, Brazil. The protected environments were covered with anti-UV low-density polyethylene plastic plus: Solpack® red ultranet net, Solpack® white net, Solpack® freshnet net, and without shade net, and five replications each. The experiment was carried out in a completely randomized design, and multivariate principal component analysis (PCA) was used to verify...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Protected environment; Shade nets; Solar radiation; Saccharum officinarum.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000100010

INFLUENCE OF ARBUSCULAR MYCORRHIZAL FUNGIES AND A NATIVE DIAZOTROPHIC BACTERIA IN SURVIVAL AND TUBERIZATION OF EX VITRO POTATO PLANTS
Provedor de dados: 73
Autores: Palacios,Gabriela; Abud,Miguel; Salvador,Miguel; Adriano,Lourdes; Dendooven,Luc; Gutiérrez,Federico Antonio.
The inoculation of several species of micropropagated plantlets with native diazotrophic bacteria and arbuscular mycorrhizal fungi has been reported to increase growth and survival percentage compared to plantlets without inoculation. The survival of in vitro developed potato (Solarium tuberosum L. cv. Alfa) plantlets co-inoculated with Glomus fasciculatum (Thaxter sensu Gerd.) Gerd &amp;amp; Trappe, G. claroideum (Schenck &amp;amp; Smith emend. Walker &amp;amp; Vestberg) and a native diazotrophic bacteria was evaluated at room temperature (16-35°C) or in a growth chamber (20-22°C). Obtained plantlets for micropropagation were placed in a peat moss/agrolite (2:1 v/v) mixture, inoculated with arbuscular mycorrhizal (AM) fungi (2250 spores plant"') and...
Tipo: Journal article
Palavras-chave: Glomus claroideum; Glomus fasciculatum; Minituber production; Potato micropropagation.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432009000200002

The cytotoxic and growth inhibitory effects of palladium(II) complexes on MDA-MB-435 cells
Provedor de dados: 74
Autores: Campanella,Nathália Cristina; Demartini,Mariana da Silva; Torres,Claudia; Almeida,Eduardo Tonon de; Gouvêa,Cibele Marli Cação Paiva.
The antitumorigenic potential of two palladium(II) complexes, [Pd(ca2-o-phen)Cl2 ] - C1 and [Pd(dmba)(dppp)Cl] - C2, was evaluated, using MDA-MB-435 cells, a human breast adenocarcinoma cell-line that does not express the estrogen receptor α (ER-). Growth inhibition and induced alterations in cell-morphology were analyzed. The sulforhodamine B test showed that, compared to control cells, both C1 and C2 significantly inhibited (p &lt; 0.5) cell growth. The maximum effect with both was achieved with 1 µM complexes, after 24 h of treatment. No further cell-growth inhibition was achieved by increasing concentration or incubation time. Cell morphology was analyzed after staining with hematoxylin-eosin (HE). The morphological changes noted in the treated cells...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adenocarcinoma cells; Antitumor; Breast cancer; Chemotherapy; Coordination complexes.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000100023

Genotype-environment interaction and phenotypic stability for girth growth and rubber yield of Hevea clones in São Paulo State, Brazil
Provedor de dados: 74
Autores: Gonçalves,Paulo de Souza; Bortoletto,Nelson; Martins,Antonio Lúcio Mello; Costa,Reginaldo Brito da; Gallo,Paulo Boller.
The best-yielding, best vigour and most stable Hevea clones are identified by growing clones in different environments. However, research on the stability in Hevea brasiliensis (Willd. Adr. ex Juss.) Muell.-Arg. is scarce. The objectives of this work were to assess genotype-environment interaction and determine stable genotypes. Stability analysis were performed on results for girth growth and rubber yield of seven clones from five comparative trials conducted over 10 years (girth growth) and four years (rubber yield) in São Paulo State, Brazil. Stability was estimated using the Eberhart and Russell (1966) method. Year by location and location variability were the dominant sources of interactions. The stability analysis identified GT 1 and IAN 873 as the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hevea brasiliensis; Rubber tree; Coefficient of determination; Stability parameters.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000400007

Association of GH and IGF-1 polymorphisms with growth traits in a synthetic beef cattle breed
Provedor de dados: 74
Autores: Pereira,Andréa Pozzi; Alencar,Maurício Mello de; Oliveira,Henrique Nunes de; Regitano,Luciana Correia de Almeida.
The Canchim beef cattle (5/8 Charolais + 3/8 Zebu) has been selected for meat production in Brazil since late 1950. In the present work the effects of growth hormone (GH) and insulin-like growth factor 1 (IGF-1) polymorphisms were investigated in 688 animals born between 1998 and 2000. These animals belonged to two genetic groups, i.e., traditional and new lineages. Genotype effects on expected breeding values for birth weight (BW), weaning weight (WW) and yearling weight (YW) were investigated by the least square method. Significant effects were found for GH genotype on YW (p &lt; 0.05), with positive effects associated with the LV (leucine/valine) genotype. For IGF-1 genotypes, significant effects were found on BW (p &lt; 0.01) and YW (p &lt; 0.01)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beef cattle; Genetic association; Genotype; Growth hormone; Insulin-like growth factor 1.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000200009

Chemical stress reduces the lateral shoot growth in vernalized garlic
Provedor de dados: 75
Autores: Gabriel,André; Resende,Juliano TV; Marodin,Josué C; Matos,Rafael de; Zeist,André R; Maciel,Cleber Daniel G.
ABSTRACT Brazil’s low garlic productivity is attributed, mainly to the lateral shoot growth, a physiological anomaly characterized by early lateral shoot growth of cloves in noble group garlic cultivars. Considering the aforementioned information, the aim was to evaluate the occurrence of lateral shoot growth and productivity characteristics in garlic plants, cv. Chonan, subject to herbicide chemical stress. In order to do so, an experiment was conducted in outlining randomized blocks in a 3x5 factorial scheme, constituted by three herbicides (paraquat 500 g ha-1; ammonium gluphosinate 400 g ha-1 and glyphosate 720 g ha-1) and five subdoses (0, 5, 10, 15 and 20% of the minimum recommended dose of each herbicide). The electron transport rates (ETR) were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allium sativum; Herbicide; Electron transport rate.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000100041

In vitro growth of Brassocattleya orchid hybrid in different concentrations of KNO3, NH4NO3 and benzylaminopurine
Provedor de dados: 75
Autores: Cardoso,Jean C; Ono,Elizabeth O.
One of the most important applications of plant tissue culture is mass propagation of ornamental plants. This experiment evaluated the effect of different concentrations of NH4NO3 and KNO3 and BAP on the in vitro growth of orchid hybrid Brassocattleya 'Pastoral'. Seedlings of this orchid hybrid were used as explants and cultivated in medium with mineral salts and vitamins from the MS medium (Murashige &amp;amp; Skoog, 1962), with the macronutrients P, Ca and Mg reduced by half, and with an addition of 25 g L-1 of sucrose, 0.1 g L-1 of myo-inositol and 1.5 g L-1 of activated charcoal. Agar-agar was added (6.5 g L-1) and the pH was adjusted to 5.8. As treatments, four concentrations of the NH4NO3 and KNO3 (2x; 1x; ½ and ¼ MS medium) and three concentrations...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tissue culture; Macronutrients; Cytokinins; Multiplication; Growth.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362011000300017

Hydroponic rocket salad growth and production according to different color profiles
Provedor de dados: 75
Autores: Schmidt,Denise; Gabriel,Vilson J; Caron,Braulio O; Souza,Velci Q; Boscaini,Ricardo; Pinheiro,Renes R; Cocco,Carine.
ABSTRACT The aim of this study was to evaluate the influence of different profile colors based on nutrient flux on microclimate, growth and yield of four rocket cultivars. The experiment was conducted during four months in a protected environment in the NLT system, which consisted of benches composed of eight hydroponic profiles for the plants conduction. The treatments were arranged in a 4x2x2 factorial design, with four cultivars (Cultivada, Folha Larga, Rococo and Runway), two color profiles (black and white) and two growing seasons (autumn and winter). The experiments were conducted in a randomized block design with three replications. The evaluations were realized on every four days, throughout the growth period. Leaves fresh and dry mass, stems and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eruca sativa; NLT; Temperature; Dry mass; Yield.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362017000100111

Irradiation effect on in vitro organogenesis, callus growth and plantlet development of Gerbera jamesonii
Provedor de dados: 75
Autores: Hasbullah,Nor A; Taha,Rosna M; Saleh,Azani; Mahmad,Noraini.
The present work was carried out to study the effects of gamma irradiation on in vitro growth of explants, callus and the formation of shoots and plantlets. Irradiation is known to exhibit or inhibit the differentiation of cells and growth of plants in vitro, which helps in producing new plant varieties. Gamma irradiation is one of the physical mutagens that are widely used for mutation breeding. A gradual decline was observed in the number of shoots regenerated from irradiated petiole explants compared to control. Numbers of shoots regenerated from irradiated petiole explant cultured on Murashige &amp;amp; Skoog medium supplemented with 2.0 mg L-1 BAP and 0.5 mg L-1 NAA was reduced to 6.6±0.9 from 7.5±0.4 (control) when explants were exposed to 20 Gray of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gerbera jamesonii; Ornamental; Gamma irradiation; Explant; Callus regeneration; Plant growth regulator; MS medium.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362012000200012

New insight into how thigmomorphogenesis affects Epipremnum aureum plant development
Provedor de dados: 75
Autores: Benedetto,Adalberto Di; Galmarini,Claudio; Tognetti,Jorge.
ABSTRACT Climbing Epipremnum aureum plants develop larger leaves than unsupported, hanging plants. This effect may be regarded, in part, as a thigmomorphogenic response, but gravimorphogenetic effect may also be involved, since polar auxin transport is known to be negatively affected in plants with horizontal or hanging stems, which may result in an altered hormone balance at the whole plant level. The present work was aimed at studying how exogenous auxins and cytokinins may influence growth of E. aureum rooted cuttings under different training systems. Rooted cuttings of E. aureum were cultivated either climbing on an upright wooden board or creeping on the glasshouse bench or hanging from a basket. All leaves of each plant were sprayed to run-off at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Auxin; Citokinin; Foliage plants; Gravitropism; Leaf growth; Leaf anatomy; Photosynthesis.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000300330

Интенсивность роста и биохимический состав микроводоросли Dunaliella viridis Teod. в зависимости от условий культивирования.
Provedor de dados: 13
Autores: Ладыгина, Л. В.
Изучали интенсивность роста и биохимический состав зеленой микроводоросли Dunaliella viridis в зависимости от условий культивирования. Установлено, что при интенсивном культивировании водоросли максимальные плотности клеток можно получить при температуре 25 - 26ºС и освещенности 6 тыс. люкс. Содержание белков, углеводов, липидов зависит от фазы роста и режима культивирования.
Tipo: Journal Contribution
Ano: 2005
URL: http://repository.ibss.org.ua/dspace/handle/99011/874

ПРОСТЕЙШИЕМОДЕЛИ РОСТАМИКРОВОДОРОСЛЕЙ 8. ИНДИВИДУАЛЬНЫЙ РОСТ КЛЕТОК В ХЕМОСТАТЕ
Provedor de dados: 13
Autores: Тренкеншу, Р. П.; Щепачёв, С. Г.
На основе понятия о приведённой плотности потока субстрата рассмотрен рост индивидуальной клетки микроводоросли в условиях хемостатной культуры. Показано, что в случае изометрического роста объём клетки увеличивается со временем по кубическому закону. http://biotex.ibss.org.ua/
Tipo: Journal Contribution
Palavras-chave: Микроводоросли; Хемостат; Закон роста клетки; Мікроводорості; Хемостат; Закон зростання клітини; Microalgae; Chemostat; Cell growth law.
Ano: 2010
URL: http://repository.ibss.org.ua/dspace/handle/99011/1878

Инъекция рекомбинантного гена гормона роста быка в печень мидий - сеголеток
Provedor de dados: 13
Autores: Кузнецов, А. В.; Казанкова, И. И.; Иванов, В. Н.
Изучали действие гена гормона роста быка (bGH) на рост молоди черноморской мидии Mytilus galloprovincialis Lmk. В печень мидий инъецировали ДНК pMT-bGH. Отмечено увеличение разброса значений линейного роста раковины мидий в подопытной группе животных по сравнению с контрольной. У 3 из 12 мидий зарегистрировано существенное замедление роста после инъекции гена соматотропина быка - 3 - 8 % прироста от среднего значения в контрольной группе.
Tipo: Journal Contribution
Ano: 2001
URL: http://repository.ibss.org.ua/dspace/handle/99011/1009

ПРОСТЕЙШИЕМОДЕЛИ РОСТАМИКРОВОДОРОСЛЕЙ 7. ИНДИВИДУАЛЬНЫЙ РОСТ КЛЕТОК В ПЛОТНОСТАТЕ
Provedor de dados: 13
Autores: Щепачёв, С. Г.; Тренкеншу, Р. П.
На основе понятия о приведённой плотности потока субстрата рассмотрен светозависимый рост индивидуальной клетки микроводоросли, находящейся в условиях плотностатной культуры. Теоретически рассмотрены условия, приводящие к экспоненциальному и линейному росту клетки. http://biotex.ibss.org.ua/
Tipo: Journal Contribution
Palavras-chave: Микроводоросли; Плотностат; Закон роста клетки; Мікроводорості; Плотностат; Закон зростання клітини; Microalgae; Turbidostat; Cell growth law.
Ano: 2010
URL: http://repository.ibss.org.ua/dspace/handle/99011/1877

Влияние антагонизма серы и селена на рост и биохимические показатели спирулины.
Provedor de dados: 13
Autores: Тренкеншу, Р. П.; Дробецкая, И. В.
Предложены модели, описывающие влияние соотношения селен: сера в среде на рост Spirulina plalensis и накопление биомассой селенсодержащих продуктов. Показано, что соотношения как скоростей синтеза, так и концентраций селено- и серосодержащих продуктов линейно зависят от соотношения концентраций селена и серы в среде. Уравнение удельной скорости роста позволяет определить минимальные и максимальные соотношения элементов в среде, в пределах которых возможен рост клеток. Рассчитано оптимальное соотношение, при котором наблюдается максимум скорости роста водорослей. http://biotex.ibss.org.ua/
Tipo: Journal Contribution
Ano: 2000
URL: http://repository.ibss.org.ua/dspace/handle/99011/979

Элементы энергетического баланса амфибионтного бокоплава Orchestia bottae M.-Edw. (Amphipoda - Talitroidea)
Provedor de dados: 13
Autores: Сущеня Л. М.
The article deals with the investigations of some parameters in determining the quantitative contribution of O. bottae to energy turnover at inshore zone of the Black sea. This species was studied at different stages of its life from July 1962 to June 1963. The received data showed that the mean value of the food consumption (R) ranged from 17.5 to 77.3% of body weight per day. The efficiency of assimilation (a) during feeding with dead Cystoseira were in the range from 31 to 51%. The relation between the weight of Orchestia (W) and its rate of oxygen consumption (Q) at 20 deg.C is expressed by equation Q=0.243*W^0.74. The energy utilized for growth (G) was estimated by the growth curve received empirically and calculated at the same time on the level of...
Tipo: Journal Contribution
Ano: 1968
URL: http://10.0.0.194:8080/dspace/handle/99011/3023

Effect of temperature on the survival and growth of freshwater prawns Macrobrachium borellii and Palaemonetes argentinus (Crustacea, Palaemonidae)
Provedor de dados: 76
Autores: Montagna,Marcela C.
During the two-month rearing period, the effect of four water temperatures (15°C, 20°C, 25°C and 30°C) on survival rate, number of molts, and growth rate (molt increment and intermolt period) of juvenile Macrobrachium borellii Nobili, 1896 and Palaemonetes argentinus Nobili, 1901 prawns was evaluated in laboratory conditions. The two species showed some similarities in their both survival and growth pattern at different temperatures. The survival rate was highest at 20°C and 25°C, decreasing at the lowest temperature. The number of molts increased at higher temperatures, ranging the intermolt period from 22.2 days to 9.9 days, for M. borellii, and from 20.8 to 9.5 days for P. argentinus, corresponding those values to 15°C and 30°C, respectively. No...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Decapods; Molt increment; Intermolt period; Temperature.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212011000200011

Validating age-determination of anglerfish and hake
Provedor de dados: 5
Autores: Brophy, Deidre (coord.).
Reliable measures of fish length-at-age are needed to estimate the biological reference points used in fish stock assessment. These data are usually obtained by counting and measuring seasonal growth marks in otoliths or other calcified structures for a representative sample of the population. For anglerfish (Lophius spp.) and hake (Merluccius merluccius) in the Northeast Atlantic, traditional age-estimation methods are unreliable. The assessments for these stocks are based on survey indices or are length-based and require accurate information on length-at-age. Without this information, accurate assessments and the estimation of MSY reference points are problematic. For some other species, objective methods of age-determination have been developed using...
Tipo: Text
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00692/80442/83615.pdf

Agonistic behaviour and feed efficiency in juvenile Nile tilapia Oreochromis niloticus
Provedor de dados: 5
Autores: De Verdal, Hugues; O'Connell, Catherine Maeve; Mekkawy, Wagdy; Vandeputte, Marc; Chatain, Beatrice; Bégout, Marie-laure; Benzie, John A.h.
Given the strong effects of behavioural hierarchies on growth in many cultured species and the key role of feed efficiency in aquaculture economics, understanding the nature of the interaction of these variables is important for the sustainability of aquaculture. The relationship between agonistic behaviour, growth and feed efficiency in Nile tilapia, Oreochromis niloticus, was studied by rearing 120 fish in eight aquaria. Fish were video-recorded to estimate the occurrence of agonistic behaviour during a fasting and a refeeding period. Growth, feed intake and feed conversion efficiency (FCE - calculated as the inverse of feed conversion ratio (FCR)) were subsequently measured individually for each fish. Fish showed 58% less agonistic traits during the...
Tipo: Text
Palavras-chave: Agonstic behaviour; Feed efficiency; Nile tilapia; Performances; Correlation.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00483/59495/62363.pdf

Acclimation of the marine diatom Pseudo‐nitzschia australis to different salinity conditions: effects on growth, photosynthetic activity and domoic acid content
Provedor de dados: 5
Autores: Ayache, Nour; Hervé, Fabienne; Lundholm, Nina; Amzil, Zouher; Caruana, Amandine.
oxic Pseudo‐nitzschia australis strains isolated from French coastal waters were studied to investigate their capacity to adapt to different salinities. Their acclimation to different salinity conditions (10, 20, 30, 35 and 40) was studied on growth, photosynthetic capacity, cell biovolume and domoic acid (DA) content. The strains showed ability to acclimate to a salinity range from 20 to 40, with optimal growth rates between salinities 30 and 40. The highest cell biovolume was observed at the lowest salinity 20 and was associated with the lowest growth rate. Salinity did not affect the photosynthetic activity; Fv/Fm values and the pigment contents remained high with no significant difference among salinities. An enhanced production of zeaxanthin was,...
Tipo: Text
Palavras-chave: Acclimation; Climate change; Domoic acid; Pseudo-nitzschia australis; Physiology; Salinity.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00585/69684/67552.pdf

Growth anomalies in Pecten maximus from coastal waters (Bay of Brest, France): relationship with diatom blooms
Provedor de dados: 5
Autores: Lorrain, Anne; Paulet, Yves-marie; Chauvaud, Laurent; Savoye, Nicolas; Nezan, Elisabeth; Guerin, Laurent.
The aim of this study was to characterize the daily shell growth of Pecten maximus from early 1998 to late spring 1999 in the Bay of Brest with a careful qualitative and quantitative description of the pelagic primary production. Our results, in accordance with previous studies, demonstrate that there are episodic declines in the growth rate. Concurrent events of low growth rate and large bottom-concentrations of algae following diatom blooms (Cerataulina pelagica or Rhizosolenia delicatula), suggests that this high concentration of phytoplankton on the bottom layer may affect food intake or respiratory activity of the scallops by gill clogging or oxygen depletion. In this study, silicic acid or phosphorus are inferred to be limiting factors responsible...
Tipo: Text
Palavras-chave: Biscay bay; Limiting factors; Primary production; Phytoplankton cnoncentration; Pecten maximus; Growth rate.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/2000/publication-612.pdf

Temperature, selective mortality and early growth in the short-lived clupeid Spratelloides gracilis
Provedor de dados: 5
Autores: Durieux, Eric; Meekan, Mark G.; Ponton, Dominique; Vigliola, Laurent.
Six cohorts of the silver-stripe round herring Spratelloides gracilis, a fast-growing and short-lived tropical clupeid, were collected as juveniles and then as adults during austral summers from November to February in 1998–1999 and 1999–2000, using light traps in the Dampier Archipelago, Western Australia. Otolith analysis allowed backcalculation of size and growth rate at age to examine the relative influences of selective mortality and water temperature on early growth. Negative sizeselective mortality and growth-selective mortality between the juvenile and the adult stages was found only in the cohort that was the smallest and slowest growing in the period immediately following hatching. Selective mortality preferentially removed members of this cohort...
Tipo: Text
Palavras-chave: Environmental factors; Indo-Pacific region; Life-history traits; Otolith; Pelagic fishes; Size.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/00008/11940/8643.pdf

Evaluation du potentiel nutritif des eaux de la baie de Vilaine pendant l'été 1987
Provedor de dados: 5
Autores: Le Dean, Loic; Truquet, Philippe; Lassus, Patrick.
The growth potential study of waters of the Vilaine bay was realized from march to september 1987 and for three sampling stations. The growth of depleted test cells of Skeletonema costatum was estimated and compared from existing nutrients pools for aIl water samples. As a first result it appears that inorganic nitrogen could stimulate the growth during spring while no clear relationship is observed between the algal growth and other hydrological parameters during spring or summer periods. Nevertheless these first results need further corroboration.
Tipo: Text
Palavras-chave: Potentiel nutritif; Baie de Vilaine; Skeletonema costatum; Test biologique; Growth potential; Vilaine Bay; S. costatum; Bioassay.
Ano: 1988
URL: http://archimer.ifremer.fr/doc/00139/25037/23146.pdf

Pheopigment dynamics, zooplankton grazing rates and the autumnal ammonium peak in a Mediterranean lagoon
Provedor de dados: 5
Autores: Collos, Yves; Husseini Ratrema, Julie; Bec, Béatrice; Vaquer, André; Hoai, Thong Lam; Rougier, Claude; Pons, Virginie; Souchu, Philippe.
The dilution technique was used to estimate chlorophyll and pheopigment, net and gross production as well as zooplankton grazing over a 12-month period in a coastal lagoon in Southern France. Chlorophyll a (Cha) based gross growth rates of phytoplankton ranged from undetectable in February to 2.6 day(-1) in June, corresponding to 3.8 divisions per day. Cha-based grazing rates ranged from undetectable in February to 1.1 d(-1) in June. The seasonal growth pattern of picoplankton was similar to that of the whole community, with a peak in July, corresponding to four divisions per day. Grazing processes represented from 20 to 150% of the phytoplankton daily growth, and the grazing pressure was stronger on small phytoplankton cells than on larger cells. Gross...
Tipo: Text
Palavras-chave: Zooplankton; Ammonium; Pheopigments; Degradation; Growth; Phytoplankton.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/publication-727.pdf

A Functional Study of Transforming Growth Factor-Beta from the Gonad of Pacific Oyster Crassostrea gigas
Provedor de dados: 5
Autores: Corporeau, Charlotte; Groisillier, Agnes; Jeudy, Alexandra; Barbeyron, Tristan; Fleury, Elodie; Fabioux, Caroline; Czjzek, Mirjam; Huvet, Arnaud.
The transforming growth factor (TGF)-beta superfamily is a group of important growth factors involved in multiple processes such as differentiation, cell proliferation, apoptosis and cellular growth. In the Pacific oyster Crassostrea gigas, the oyster gonadal (og) TGF-beta gene was recently characterized through genome-wide expression profiling of oyster lines selected to be resistant or susceptible to summer mortality. Og TGF-beta appeared specifically expressed in the gonad to reach a maximum when gonads are fully mature, which singularly contrasts with the pleiotropic roles commonly ascribed to most TGF-beta family members. The function of og TGF-beta protein in oysters is unknown, and defining its role remains challenging. In this study, we develop a...
Tipo: Text
Palavras-chave: Transforming growth factor-beta; Bacterial expression; In vivo antibody inhibition; Reproduction; Crassostrea gigas; Marine bivalve.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00042/15371/13438.pdf

Facteurs contrôlant la croissance de Ruditapes philippinarum dans 4 nurseries de production en Charente-Maritime (France)
Provedor de dados: 5
Autores: Heral, Maurice; Deslous-paoli, Jean-marc; Garnier, Jacqueline; Prioul, Daniel; Heurtebise, Serge; Razet, Daniel.
Different types of pregrowth of the Japanese palourde are compared on the some site. The method by upwelling which is the more common used, to have good growth, requires a compromise between the running and the raised biomass.  Two periods are critical, in the summer the growth of mollusks is stopped because of a decrease in the phytoplanktonic production ;  in the winter, a fall in temperature lessens filtration and stops growth. The results concern clams consummatation rates of particular food (chlorophyll, protids, lipids, glucids) as weIl as the way to supply the decreasing growth : increase of phytoplankyonic production in the summer by recycling waters from nurseries that are loaded with ammoniac and raise winter temperatures by using under-ground...
Tipo: Text
Palavras-chave: Nursery; Growth; Ruditapes philippinarum; Clams; Nurserie; Croissance; Ruditapes philippinarum; Palourdes.
Ano: 1982
URL: http://archimer.ifremer.fr/doc/1982/acte-2951.pdf

A DEB based analysis of growth and toxin elimination processes in mussels (Mytilus edulis) exposed to Diarrhetic Shellfish Toxins (DST)
Provedor de dados: 5
Autores: Rosland, Rune; Alunno-bruscia, Marianne; Duinker, Arne; Strand, Oivind; Strohmeier, Tore.
A Dynamic Energy Budget(DEB) model was used to analyse growth and toxin elimination processes in musselsthat had been exposed to Diarrhetic Shellfish Toxins (DST). After DST exposure mussels were placed inan experimentalin-situ setup, expected to have low concentrations of toxic phytoplankton, and DST concentrations in mussel tissueswere regularly monitored along with temperature and seston concentration and composition in the water. A one-compartment model for DST concentrations and elimination rate was integrated with the DEB model, assuming that storage and structural compartments absorb DST. The model was used to simulate growth and toxin elimination rates from mussel tissues. Toxin elimination rate was obtained by a calibration between observed and...
Tipo: Text
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00148/25936/24001.pdf

Temperature and Food Influence Shell Growth and Mantle Gene Expression of Shell Matrix Proteins in the Pearl Oyster Pinctada margaritifera
Provedor de dados: 5
Autores: Joubert, Caroline; Linard, Clementine; Le Moullac, Gilles; Soyez, Claude; Saulnier, Denis; Teaniniuraitemoana, Vaihiti; Ky, Chin-long; Gueguen, Yannick.
In this study, we analyzed the combined effect of microalgal concentration and temperature on the shell growth of the bivalve Pinctada margaritifera and the molecular mechanisms underlying this biomineralization process. Shell growth was measured after two months of rearing in experimental conditions, using calcein staining of the calcified structures. Molecular mechanisms were studied though the expression of 11 genes encoding proteins implicated in the biomineralization process, which was assessed in the mantle. We showed that shell growth is influenced by both microalgal concentration and temperature, and that these environmental factors also regulate the expression of most of the genes studied. Gene expression measurement of shell matrix protein...
Tipo: Text
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00210/32095/30535.pdf

Use of satellite data to predict shellfish growth
Provedor de dados: 5
Autores: Bacher, Cedric; Thomas, Yoann; Alunno-bruscia, Marianne; Mazurie, Joseph.
The advent of remote sensing in biological oceanography in the 1990s offers a very powerful tool able to capture temporal and spatial changes of chlorophyll-a concentration and temperature at several temporal scales (decadal, inter annual and seasonal), and at local as well as at the oceanic scale. Such data have the advantage over traditional measurements of being inexpensive, spatially extensive, automatically repeated in time and validated. They have been very useful for phytoplankton monitoring in relation to eutrophication in coastal waters and the number of applications in the field of coastal zone management is growing. We present here a real case application to shellfish aquaculture. We assessed the potential for mussel aquaculture in Mont Saint...
Tipo: Text
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00083/19459/17093.pdf

Age and Growth of the lemon sole (Microstomus kitt) in the Celtic Sea and the North Sea
Provedor de dados: 5
Autores: Mahe, Kelig; Elleboode, Romain; Persohn, Cecile; Dufour, Jean-louis.
Age and growth of lemon sole (Microstomus kitt) were determined from 115 specimens collected in the Celtic Sea and in the North Sea in 2006 and 2007. Total length is ranged from 11 to 44 cm, while total weight varied between 12 and 1040 g. Age estimation was based on otoliths readings. The oldest male and female were estimated to be 9 years old. The length–weight relationships parameters for lemon sole in the Celtic Sea and in the North Sea were W=0.0043*TL3.2860 and W=0.0062*TL3.1505 respectively. Weight including both sexes increased with positive allometric growth. The von Bertalanffy growth equation in the North Sea was fitted on the basis of mean length-at-age data resulting in parameters values of TL∞ = 36.44 cm (S.E. = 0.484), K = 0.187 /y (S.E. =...
Tipo: Text
Palavras-chave: Lemon sole; Growth; Von Bertalanffy; Celtic Sea; North Sea.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00019/13024/10002.pdf

Biophysical modelling of larval drift, growth and survival for the prediction of anchovy (Engraulis encrasicolus) recruitment in the Bay of Biscay (NE Atlantic)
Provedor de dados: 5
Autores: Allain, Gwenhael; Petitgas, Pierre; Lazure, Pascal; Grellier, Patrick.
Fish recruitment is the result of the integration of small-scale processes affecting larval survival over a season and large oceanic areas. A hydrodynamic model was used to explore and model these physical-biological interaction mechanisms and then to perform the integration from individual to population scales in order to provide recruitment predictions for fisheries management. This method was applied to the case of anchovy (Engraulis encrasicolus) in the Bay of Biscay (NE Atlantic). The main data available to investigate survival mechanisms were past growth (otolith) records of larvae and juveniles sampled at sea. The drift history of these individuals was reconstructed by a backtracking procedure using hydrodynamic simulations. The relationships...
Tipo: Text
Palavras-chave: Recruitment; Physical biological interactions; Individual based models; Biscay; Anchovy.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-3422.pdf

Dietary TAG source and level affect performance and lipase expression in larval sea bass (Dicentrarchus labrax)
Provedor de dados: 5
Autores: Morais, Sophia; Cahu, Chantal; Zambonino-infante, Jose-luis; Robin, Jean; Ronnestad, I; Dinis, M; Conceicao, L.
The influence of dietary TAG source (fish oil, triolein, and coconut oil) and level (7.5 and 15% of the diet) on growth, lipase activity, and mRNA level was studied in sea bass larvae, from mouth opening until day 24 and from day 37 to 52. Fish oil and triolein induced better growth in both experiments, this being significant at a higher dietary level. Coconut oil significantly decreased growth at the higher level, possibly as the result of an excessive supply of medium-chain TAG. Growth was not related to lipase specific activity, suggesting a production in excess to dietary needs. Body lipid content was positively related to dietary lipid level and was affected by lipid quality. In addition, larval FA composition generally reflected that of the diet. The...
Tipo: Text
Palavras-chave: Lipase activity; Dietary; Growth; Larvae; Sea bass; Fish culture.
Ano: 2004
URL: https://archimer.ifremer.fr/doc/2004/publication-785.pdf

Contribution of benthic microalgae to the temporal variation in phytoplankton assemblages in a macrotidal system
Provedor de dados: 5
Autores: Hernandez Farinas, Tania; Ribeiro, Lourenco; Soudant, Dominique; Belin, Catherine; Bacher, Cedric; Lampert, Luis; Barille, Laurent.
Suspended marine benthic microalgae in the water column reflect the close relationship between the benthic and pelagic components of coastal ecosystems. In this study, a 12-year phytoplankton time-series was used to investigate the contribution of benthic microalgae to the pelagic system at a site along the French-Atlantic coast. Furthermore, all taxa identified were allocated into different growth forms in order to study their seasonal patterns. The highest contribution of benthic microalgae was observed during the winter period, reaching up to 60% of the carbon biomass in the water column. The haptobenthic growth form showed the highest contribution in terms of biomass, dominant in the fall-winter period when the turbidity and the river flow were high....
Tipo: Text
Palavras-chave: Co-inertia; Dynamic linear models; Epipelon; Epiphyton; Haptobenthos; Microphytobenthos growth forms; Seasonality; Tychoplankton.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00392/50345/51035.pdf

Optimizing conditions for the continuous culture of Isochrysis affinis galbana relevant to commercial hatcheries
Provedor de dados: 5
Autores: Marchetti, Julie; Bougaran, Gael; Le Dean, Loic; Megrier, Cyril; Lukomska, Ewa; Kaas, Raymond; Olivo, Erell; Baron, Regis; Robert, Rene; Cadoret, Jean-paul.
Optimal culture conditions were investigated for the continuous culture of Isochrysis affinis galbana (T-Iso) by assessing the effects of irradiance, temperature, pH and nitrogen and phosphorus requirements. Assessment of the growth rate-irradiance relationship in a turbidostat experiment highlighted that an optimum irradiance efficiency for growth (E-mu) occurred at irradiance much lower than the saturating level. Furthermore, our modeling approach for productivity pointed out that an optimal set of irradiance and dilution rate could be achieved in order to maximize irradiance efficiency. Optimal conditions for growth were assessed for temperature, pH and irradiance by means of a factorial design experiment. The resulting model predicted that optimal...
Tipo: Text
Palavras-chave: Isochrysis affinis galbana; Irradiance efficiency; Factor interaction; Nutrient limitation; Microalgae cultures.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00076/18736/16465.pdf

Poor correlation between phytoplankton community growth rates and nutrient concentration in the sea
Provedor de dados: 5
Autores: Regaudie-de-gioux, Aurore; Sal, S.; Lopez-urrutia, A.
Nutrient availability is one of the major factors regulating marine productivity and phytoplankton community structure. While the response of phytoplankton species to nutrient variation is relatively well known, that of phytoplankton community remains unclear. We question whether phytoplankton community growth rates respond to nutrient concentration in a similar manner to phytoplankton species composing the community, that is, following Monod's model. Data on in situ marine community growth rates in relation to nutrient concentration and the behaviour of a simple multi-species community model suggest that community growth rate does not respond to nutrient concentration according to the Monod equation. Through a simulation study we show this can be...
Tipo: Text
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00419/53071/54039.pdf

Taux de croissance et rapports ARN/ADN chez le bivalve dépositivore Abra ovata nourri à partir de différents détritus
Provedor de dados: 5
Autores: Frantzis, A; Gremare, A; Vetion, G.
We measured growth rates and RNA/DNA ratios of deposit-feeding bivalves Abra ovata cultured for five months in the laboratory where they were fed on fresh detritus derived from twelve macrophytes (Rissoella verruculosa, Cystoseira mediterranea, Corallina elongata, Stypocaulon scoparium, Padina pavonica, Ulva rigida, Cystoseira compressa, Colpomenia sinuosa, Posidonia oceanica, Codium vermilara, Asparagopsis armata, and Dilophus spiralis). Growth rates and RNA/DNA ratios were significantly affected by the nature of the detritus offered. However, there was no significant (n = 65, r = 0,07) correlation between growth rates and RNA/DNA ratios. These results show that there were significant qualitative differences in the tested detritus. They suggest that the...
Tipo: Text
Palavras-chave: DETRITUS; GROWTH; DEPOSIT-FEEDERS; BIVALVES; NUCLEIC ACIDS.
Ano: 1993
URL: http://archimer.ifremer.fr/doc/00100/21136/18756.pdf

Acoustical monitoring of fish density, behavior, and growth rate in a tank
Provedor de dados: 5
Autores: Conti, Stéphane; Roux, Philippe; Fauvel, Christian; Maurer, Benjamin; Demer, David.
A challenge for the aquaculture community has long been the development of harmless techniques for monitoring fish in a tank. Acoustic telemetry has been used to monitor fish swimming behavior, and passive acoustics have been used to monitor fish feeding, but new techniques are needed to monitor non-invasively their numbers and growth rates. Recently, it has been demonstrated that the acoustical total scattering cross section of fish swimming in a tank can be measured from multiple reverberation time series. These measurements have been used successfully to estimate the number of fish in a tank in laboratory conditions, and to characterize their acoustical signatures. Here, we introduce a novel method for acoustically monitoring fish numerical density and...
Tipo: Text
Palavras-chave: Total scattering cross section; Fish counting; Growth rate; Remote monitoring; Fish behavior.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1121.pdf

An amylase gene polymorphism is associated with growth differences in the Pacific cupped oyster Crassostrea gigas
Provedor de dados: 5
Autores: Prudence, Marie; Moal, Jeanne; Boudry, Pierre; Daniel, Jean-yves; Quere, Claudie; Jeffroy, Fanny; Mingant, Christian; Ropert, Michel; Bedier, Edouard; Van Wormhoudt, A; Samain, Jean-francois; Huvet, Arnaud.
This study investigated the non-neutrality of genetic polymorphism in two alpha-amylase genes (AMYA and AMYB) in the oyster Crassostrea gigas. Bi-parental oyster families, bred to be polymorphic for markers in these genes, were monitored for growth and survival for 1 year under standard culture conditions in two French production sites. Within-family genotype frequencies indicated that the two amylase genes were closely linked (c. 1.7 cM). Within two of three families, significant differences in growth were observed between genotypes at one of the two production sites, suggesting that this polymorphism is not neutral and might be under selection because of its role in digestive function. Estimated daily yields were different between amylase genotypes,...
Tipo: Text
Palavras-chave: Growth; Genotype; Digestive enzyme; Bivalve; Alpha amylase.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1691.pdf

La croissance de la coquille Saint-Jacques (Pecten maximus L.) dans les divers gisements français
Provedor de dados: 5
Autores: Antoine, Loïc; Arzel, Pierre; Laurec, Alain; Morize, Eric.
The growth of the scallop ( Pecten maximus L.) has been studied in several stocks along the french coast . The growth in height has been first described by the Von Bertalanffy growth curve, and the paramete rs (especially K and Loo) compared between the different stocks. An attempt has been made to study local (inside a stock) spatial heterogeneities, as well as variations from year to year. Finally a modification of the Von Bertalanffy growth curve is suggested, whick takes into account seasonnal variations in the growth rate.
Tipo: Text
Ano: 1976
URL: http://archimer.ifremer.fr/doc/00247/35868/34388.pdf

Tank wall colour and light level affect growth and survival of Eurasian perch larvae (Perca fluviatilis L.)
Provedor de dados: 5
Autores: Tamazouzt, Lakhdar; Chatain, Beatrice; Fontaine, Pascal.
The influence of interaction between light intensity and tank wall colours on survival and growth of perch larvae (Perca fluviatilis L.) was investigated for 15 days after hatching. Three light intensities (250, 400 and 800 Ix) and four wall colours (black, dark grey, light grey and white) were used. At the end of the experiment, survival rates ranged between 1% and 26%, and varied according to the different treatments (P = 0.0001; df = 11). A global effect of light intensity was detected(P = 0.0001; df = 2) and the highest survival rate was observed under 250 Ix. Survival was also influenced by the tank wall colour(P = 0.0001; df = 3): light grey showed the best result (17%). The greatest growth in weight and length was observed in tanks with light grey...
Tipo: Text
Palavras-chave: Growth; Survival; Light level; Tank colour; Larvae; Eurasian perch.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/2000/publication-505.pdf

Stochastic Modeling of Forces on Jacket-Type Offshore Structures Colonized by Marine Growth
Provedor de dados: 5
Autores: Ameryoun, Hamed; Schoefs, Franck; Barille, Laurent; Thomas, Yoann.
The present paper deals with the stochastic modeling of bio-colonization for the computation of stochastic hydrodynamic loading on jacket-type offshore structures. It relies on a multidisciplinary study gathering biological and physical research fields that accounts for uncertainties at all the levels. Indeed, bio-colonization of offshore structures is a complex phenomenon with two major but distinct domains: (i) marine biology, whose processes are modeled with biomathematics methods, and (ii) hydrodynamic processes. This paper aims to connect these two domains. It proposes a stochastic model for the marine organism's growth and then continues with transfers for the assessment of drag coefficient and forces probability density functions that account for...
Tipo: Text
Palavras-chave: Marine growth; Biofouling; Wave loading; Stochastic modeling; Reliability; Jacket structures.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00605/71668/70107.pdf

Flowering-time genes modulate meristem determinacy and growth form in Arabidopsis thaliana
Provedor de dados: 16
Autores: Melzer, S.; Lens, F.; Gennen, J.; Vanneste, S.; Rohde , A.; Beeckman, T.
Plants have evolved annual and perennial life forms as alternative strategies to adapt reproduction and survival to environmental constraints. In isolated situations, such as islands, woody perennials have evolved repeatedly from annual ancestors1. Although the molecular basis of the rapid evolution of insular woodiness is unknown, the molecular difference between perennials and annuals might be rather small, and a change between these life strategies might not require major genetic innovations2,3. Developmental regulators can strongly affect evolutionary variation4 and genes involved in meristem transitions are good candidates for a switch in growth habit. We found that the MADS box proteins SUPPRESSOR OF OVEREXPRESSION OF CONSTANS 1 (SOC1) and FRUITFULL...
Tipo: Article / Letter to the editor
Palavras-chave: Flowering-time; Meristem determinacy; Growth form; Arabidopsis thaliana; Insular woodiness; Secondary growth; Annual life forms; 42.56.
Ano: 2008
URL: http://www.repository.naturalis.nl/record/429531

Comparison of accumulation patterns in layered dentinal tissue of some Odontoceti and corresponding patterns in baleen plates and ear plugs of Balaenopteridae
Provedor de dados: 16
Autores: Utrecht, W.L. van.
The data of the present examination show that the teeth of delphinids reach their ultimate diameter before eruption from the gum. However, growth in length continues during the first three or four years after birth, thereafter the increase in length is neglegible. In the same period the width of the dentinal growth layers decreases rapidly to approach an asymptote when about 10 layers are deposited. In Phocoena phocoena and Delphinus delphis the greatest thickness of the first dentinal layer is about 350 μm and never exceeds this figure. The decrease in width of the layers can only be expressed by a straight line in a logarithmic plot. Due to this decrease the layers are not comparable to each other. Secondary layers can only be seen in the first three or...
Tipo: Article / Letter to the editor
Ano: 1981
URL: http://www.repository.naturalis.nl/record/505057

On two different growth-forms of Merulina laxa, Dana
Provedor de dados: 16
Autores: Boschma, H.
It is a well-known fact that in many species of reef-corals the form of different colonies is largely subject to external influences that affected it during its growth. Not only in different colonies is this variability found, but also parts of the same colony may offer a striking contrast when compared with one another. One of the causes that modify the growth-form of various colonies of reef-corals, especially of the branching ones, is the action of the waves that roll in upon the reef after they have been more or less dissolved at the edge. These waves constantly sweep over the tops of the coral-colonies so as to prevent them to grow in height above a certain level. Together with the larger colonies whose tops are constantly in contact with the waves...
Tipo: Article / Letter to the editor
Palavras-chave: 42.72.
Ano: 1924
URL: http://www.repository.naturalis.nl/record/318420

The relative importance of stabilizing mechanisms of coexistence
Provedor de dados: 17
Autores: Glenda M. Yenni; Xiao Xiao.
*Background/Question/Methods* &amp;#xd;&amp;#xa;Stabilizing mechanisms of coexistence, by definition, cause a species to experience greater intraspecific competition than interspecific. This results in negative frequency-dependent growth rates for that species causing a negative relationship between its relative frequency in the community and its growth rate in the next year. The most crucial aspect of this negative relationship for persistence is that it enables a species to increase when rare. This has been empirically demonstrated for pairwise interactions. However, in species-rich communities, the effects of competition are not realistically pairwise. In cases where multiple species are competing for a resource, stabilizing mechanisms become...
Tipo: Poster
Palavras-chave: Ecology.
Ano: 2009
URL: http://precedings.nature.com/documents/3762/version/1

Regulation of Phosphatase Homologue of Tensin Protein Expression by Bone Morphogenetic Proteins in Prostate Epithelial Cells
Provedor de dados: 17
Autores: Travis Jerde; Zhong Wu; Dan Theodorescu; Wade Bushman.
Phosphatase homologue of tensin (PTEN) is the key endogenous inhibitor of phosphoinositide signaling and is the most commonly mutated gene in human prostate cancer. The bone morphogenetic proteins (BMPs) are secreted developmental signaling molecules known to promote differentiation in the prostate. BMP ligands have been shown to inhibit prostate cancer cell line proliferation and tumor growth and expression of BMPs, BMP ligands, receptors and signaling effectors are diminished in prostate cancer. A previous report in the colon led us to investigate the potential mechanistic relationship between PTEN and BMP signaling in prostate epithelial cells. We show here that BPM signaling positively regulates PTEN in normal and malignant prostate cells by increasing...
Tipo: Manuscript
Palavras-chave: Cancer; Developmental Biology.
Ano: 2010
URL: http://precedings.nature.com/documents/4311/version/1

Control of cell division in the adult brain by heparan sulfates in fractones and vascular basement membranes
Provedor de dados: 17
Autores: Frederic Mercier; Vanessa Douet.
Regulation of cell division in adult tissues and organs requires the coordination of growth factors at the surface of potentially-dividing cells in specific anatomic loci named germinal niches. However, the biological components and physiological system that control growth factors in the germinal niches are unknown. In the adult brain, no function has been attributed to fractones, the fractal-shaped extracellular matrix structures located in the subventricular zone (SVZ) next to neural stem and progenitor cells. Here, we show that BMP-7 (bone morphogenetic protein-7) and FGF-2 (fibroblast growth factor-2) modulate cell division in the SVZ only if the growth factors bind to heparan sulfates localized in fractones and adjoined vascular basement membranes....
Tipo: Manuscript
Palavras-chave: Molecular Cell Biology; Neuroscience.
Ano: 2010
URL: http://precedings.nature.com/documents/5444/version/1

Diamagnetic levitation enhances growth of liquid bacterial cultures by increasing oxygen availability
Provedor de dados: 17
Autores: Camelia E. Dijkstra; Oliver J. Larkin; Paul Anthony; Michael R. Davey; Laurence Eaves; Catherine E. D. Rees; Richard J. A. Hill.
Diamagnetic levitation is a technique that uses a strong, spatially-varying magnetic field to reproduce aspects of weightlessness, on the Earth. We used a superconducting magnet to levitate growing bacterial cultures for up to 18 hours, to determine the effect of diamagnetic levitation on all phases of the bacterial growth cycle. We find that diamagnetic levitation increases the rate of population growth in a liquid culture and reduces the sedimentation rate of the cells. Further experiments and microarray gene analysis show that the increase in growth rate is due to enhanced oxygen availability. We also demonstrate that the magnetic field that levitates the cells also induces convective stirring in the liquid. We present a simple theoretical model,...
Tipo: Manuscript
Palavras-chave: Microbiology.
Ano: 2010
URL: http://precedings.nature.com/documents/4216/version/2

Compatibility of the fungus Beauveria Bassiana (Bals.) Vuill. (Deuteromycetes) with extracts of neem seeds and leaves and the emulsible oil
Provedor de dados: 82
Autores: Depieri,Rogério A.; Martinez,Sueli S.; Menezes Jr.,Ayres O.
The compatibility of a commercial formula of emulsible neem oil (Azadirachta indica A. Juss.) and of aqueous extracts of neem seeds and leaves with Beauveria bassiana (Bals.) Vuill. was evaluated in vitro. Three experiments were conducted to evaluate the effect of each product on the fungus vegetative growth and on conidia production and viability. The products were incorporated to a culture medium (BDA+E) and distributed into petri dishes, in the following concentrations: 0.15%; 1.5% and 15% (leaf aqueous extract), 1%; 2% and 4% (seed aqueous extract) and 0.5%; 1% and 1.5% (emulsible oil). Vegetative growth and conidia production were the basis for characterization of the aqueous extracts of seeds and leaves and of the emulsible oil, using the T...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Azadirachta indica; Selectivity; Biological control; Entomopathogenic fungus.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000400010

Growth of the Silverside Atherinella brasiliensis in Tramandaí Estuary, Southern Brazil (Actinopterygii: Atherinopsidae)
Provedor de dados: 83
Autores: Bervian,Giovana; Fontoura,Nelson F.
The growth of Atherinella brasiliensis (Quoy &amp;amp; Gaimard, 1824) was studied through monthly samples taken at Tramandaí Lagoon, Imbé County, Rio Grande do Sul, Brazil. Animals were captured using a beach seine net. Length-weight relationships and age- growth curves for males and females were adjusted. The growth parameters of the von Bertalanffy growth formulae are Linf=16.0 and k=0.883 for males and Linf=17.0 and k=0.825 for females. First reproduction occurred one year after recruitment. Once reaching maturity, adults of A. brasiliensis reproduced once more in the next spring with two-year-olds and disappeared soon after from size frequency distributions. A few captured animals showed a size compatible with an age of three years.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atherinidae; Longevity; Life cycle; Life history.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252007000400008

Age, growth, mortality and yield per recruit of the dourado Salminus brasiliensis, Corumbá Reservoir, Goiás State, Brazil
Provedor de dados: 83
Autores: Tos,Claudenice Dei; Gomes,Luiz Carlos; Agostinho,Angelo Antônio; Batista,Rosana Paulo.
In order to evaluate the fate of the migratory species dourado Salminus brasiliensis in the first years of impoundment in Corumbá Reservoir we estimated age, growth, mortality and yield per recruit. Samplings were carried out monthly in Corumbá Reservoir and its main tributaries (Goiás State) from March 1998 to February 1999 using gillnets. After one year of impoundment, age was estimated from scales and the maximum number of rings was six for males and five for females. Rings are formed annually in May and June. The asymptotic length and growth rate for males and females were 37.1 cm and 0.77 and 56.6 cm and 0.52, respectively. A dominance of juveniles was verified in the reservoir and its tributaries. The instantaneous total mortality rate (Z) was 1.59...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth model; Mortality; Fishery yield; Dam; Characidae.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000200014

Metaplasia in swim bladder epithelium of the endangered annual fish Austrolebias nigrofasciatus (Cyprinodontiformes: Rivulidae) results in inadequate swimming and delayed growth
Provedor de dados: 83
Autores: Fonseca,Alinca Peres da; Volcan,Matheus Vieira; Romano,Luís Alberto; Robaldo,Ricardo Berteaux.
ABSTRACT Laboratory breeding of annual fish is often impaired when fish fail to inflate the swim bladder after hatching. These fish, which are known as belly-sliders, cannot swim in the water column, moving mainly on the bottom of water. Therefore, we wanted to understand the factors underlying failed inflation of swim bladder in the annual fish Austrolebias nigrofasciatus and determine the implications of this condition on the growth of juveniles. To identify how the initial filling of the gaseous vesicle is compromised, and to determine the implications of this condition on juvenile growth, we analysed the histology of the swim bladder of both normal swimming fish and belly-sliders during their initial growth phase (first month of life). In addition to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Belly-sliders; Hatching; Killifish; Laboratory breeding; Pathology.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000400205

Early development and allometric growth in Nannacara anomala Regan, 1905 (Perciformes: Cichlidae) under laboratory conditions
Provedor de dados: 83
Autores: Kupren,Krzysztof; Prusińska,Maja; Żarski,Daniel; Krejszeff,Sławomir; Kucharczyk,Dariusz.
Morphological development and allometric growth of laboratory reared Nannacara anomala were studied from hatching to the loss of larval characters and beginning of squamation (18 days post-hatching) at 26°C. The mean total length (TL) of larvae and juveniles increased from 3.74 mm at hatching to 9.60 mm at metamorphosis. Morphogenesis and differentiation were most intense during the first week of development. During this period (TL interval = 3.74 - 4.84 mm) there was an evident priority to enhance the feeding and swimming capabilities by promoting accelerated growth in the head and tail regions. Following this period, there was a major decrease in growth coefficients, indicating a change in growth priorities. Observations on the early development of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ontogeny; Fish larvae; Morphological characteristics; Larval development; Substrate-brooder.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000300659

Growth, mortalities and yield per recruit of the shrimp fish scad Alepes djedaba (Forskal) (F. Carangidae), from Abu Qir Bay, Eastern Alexandria, Egypt
Provedor de dados: 20
Autores: El-Sayed, H.Kh.A.
Growth and population dynamics parameters of Alepes djedaba as an exotic carangid fish species from Red Sea into the Levant Basin of the Mediterranean Sea, were investigated. Fish samples were obtained from purse-seiners operating during the day time from Jan. to Dec. 2003 in Abu Qir Bay, Eastern Alexandria. The results obtained show that back-calculated lengths (based upon otolith readings) for the first; second and third age groups were 10.38; 15.4 and 19.32 cm TL respectively, the estimated Bertalanffy growth parameters were L∞=33.29 cm, K=0.2473 and t0= -0.51. The Length-weight relationship was represented by the formula: Log W=-1.9245+2.9762 Log L. Total mortality (Z), natural mortality (M) and fishing mortality (F) were 1.85; 0.62 and 1.23...
Tipo: Journal Contribution
Palavras-chave: Mortality; Yield/recruit; Growth; Carangidae.
Ano: 2005
URL: http://hdl.handle.net/1834/4995

Comparación mediante el empleo de los caracteres merísticos y el crecimiento de caballas originarias de varias regiones geográficas (Cataluña, Islas Canarias y Sudamerica)
Provedor de dados: 20
Autores: Perrotta, R.G.
Mackerel from SW Atlantic (22° -39°S) and the coast of Cataluña (42° 30'N) were compared by analizing both morphometric and meristic characters. A multivariate analysis, i.e. principal components was used. The growth curves corresponding to mackerels from different regions (Canarias, North of Chile, Mar del Plata and Rincón in Argentine) were also compared, as well as the mean length at ages 1 and 2 (Mar del Plata- Cataluña, Rincón- Cataluña). Significant differences in the growth were found between two groups. The first group was integrated by three SW Atlantic population (Brasil, Mar del Plata, Rincón), which possible conform a subspecies of Scomber japonicus. The second one was represented by the coastal mackerel off Cataluña.
Tipo: Journal Contribution
Palavras-chave: Morphometry; Meristic counts; Growth; Multivariate analysis; Growth; Multivariate analysis; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_28921.
Ano: 1993
URL: http://hdl.handle.net/1834/2570

Efecto de la ablación ocular en el crecimiento de juveniles de Langosta (Panulirus argus)
Provedor de dados: 20
Autores: Blanco, W.; Fraga, I.
Two experiments were accomplished in (P. argus) lobster juveniles, for evaluate unilateral and bilateral eyestalk ablation. First one with initial weight 120 g the juveniles reach (237 g and 146 g) in 180 days, survivals (75% and 72%), NBI (50.4 and 27), growth rates (0.731 g/day and 0.231 g/day), SGR (0.47%/day and 0.16%/day) respectively; significant differences were found between unilateral and bilateral ablation on final weights, SGR and NBI. On a second experiment, using unilateral ablation with initial weight of 30 g the juveniles reach 130 g in 154 days, survival 66.6%, NBI 58.7, growth rate 0.651 g/day and SGR 0.95%/day. Significant differences appear between final weight, SGR, and NBI with control. The unilateral ablation shows the best records...
Tipo: Proceedings Paper
Palavras-chave: Lobster culture; Animal growth.
Ano: 2003
URL: http://hdl.handle.net/1834/2075

Performance of Clarias gariepinus in a polyculture with Oreochromis niloticus.
Provedor de dados: 20
Autores: Oladosu, G.A.; Ayinla, O.A.; Onuoha, G.C.; Needom, J.G.
A study of the performance of Clarias gariepinus (African Mudfish) in a polyculture with Oreochromis niloticus (Tilapia), integrated with broiler chicken production was carried at the African Regional Aquaculture Centre, Nigeria.  Three experimrntal treatments were utilized.  Treatment I was a polyculture of C. gariepinus and O. niloticus integrated with broiler chicken production, with application of supplemental feed to fish.  Treatment II was a repeat of treatment 1, except that no supplemental feed was applied to fish, while treatment III was a polyculture of the two fish species per se with application of supplemental feed to fish.  Results showed that the final individual weight, individual weight gain and recovery rate were best for C. gariepinus,...
Tipo: Report
Palavras-chave: Fish culture; Polyculture; Fish culture; Http://aims.fao.org/aos/agrovoc/c_2918.
Ano: 1990
URL: http://hdl.handle.net/1834/2439

Effect of dietary phosphatidylcholine on growth and lipid composition of post-larval &lt;i&gt;Penaeus vannamei&lt;/i&gt; (Boone)
Provedor de dados: 27
Autores: Camara, M.R.; Coutteau, P.; Sorgeloos, P.
Dietary phospholipids and particularly phosphatidylcholine have been found to enhance growth and survival in penaeid shrimp, an effect which has been attributed to their limited ability to synthesize phospholipids de novo. However, most of the studies made so far have used low purity phospholipids and therefore, precise requirements for dietary phosphatidylcholine among several species of shrimp have been difficult to establish.As part of a broad study which aims to study lipid nutrition in penaeid shrimp, the dietary effect of purified phosphatidylcholine (PC) on growth, survival, stress resistance and body lipid composition of post-larval &lt;i&gt;Penaeus vannamei&lt;/i&gt; fed semi-purified microbound diets was evaluated. Changes on the body lipid...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Penaeus vannamei.
Ano: 1995
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2532

Healthy growth in mid-scale values based food chains
Provedor de dados: 21
Autores: Kvam, Gunn-Turid.
This paper is a literature review of studies of mid-scale food values based food chains and healthy growth processes in the organic food sector. By midscale values based food chains we mean productions that are growing out of the niche/small scale market into larger volumes and sales. Previous research have shown that niche market chains might have inherent problems in moving from niche to volume, while mainstream large-scale markets have inherent problems in securing and advancing organic values. A main hypothesis is that mid-scale value based chains are able to deal with these challenges because they are based on a different form of marketing logic and strategies than either small- or large scale chains. As a first step in analysis of the success of...
Tipo: Conference paper, poster, etc.
Palavras-chave: Food security; Food quality and human health Values; Standards and certification Produce chain management.
Ano: 2014
URL: http://orgprints.org/27676/1/kvam-2014-Book-of-Abstracts-IFSA-Berlin-p57.pdf

Effect of mycorrhizal inoculation and compost supply on growth and nutrient uptake of young leek plants grown on peat-based substrates
Provedor de dados: 21
Autores: Perner, Henrike; Schwarz, Dietmar; George, Eckhard.
Organic horticultural production systems often are characterized by the use of beneficial soil microorganisms because the application of soluble inorganic P or N fertilizers is not endorsed. Due to the limited supply of soluble nutrients in organic production systems, nutrient deficiency may limit plant growth and yield. The sole use of peat for pot-based cultures is also discouraged in organic production systems. Therefore, we have studied viable alternatives for highly soluble fertilizers and pure peat substrates using leek [Allium ampeloprasum L. var. Porrum] as a test plant. Plants were grown on peat-based substrates with different rates of compost additions, and with and without inoculation with arbuscular mycorrhizal (AM) fungi. Inoculation with a...
Tipo: Journal paper
Palavras-chave: Composting and manuring.
Ano: 2006
URL: http://orgprints.org/15387/1/Perner%2Detal%2D2006%2DHortScience.41_p628%2D632.pdf

Root growth vigour is a better predictor than root hair traits of early nutrient uptake in spring wheat plants grown at low soil fertility
Provedor de dados: 21
Autores: Wang, Yaosheng; Thorup-Kristensen, Kristian; Jensen, Lars Stoumann; Magid, Jakob.
Background and Aims A number of root and root hair traits have been proposed as important for acquisition of P. However, it remains unknown whether these traits are most important in determining macro- and micronutrient uptake at low soil fertility. This study investigated the variations in root and root hair traits among spring wheat genotypes and examined which root and root hair traits are most important for high uptake of macro- and micronutrients.   Methods Six spring wheat genotypes were grown in a soil with low nutrient availability. The root and root hair traits as well as the content of macro- and micronutrients were identified.   Results A significant genetic variability in root and root hair traits was found. High root growth vigour and long and...
Tipo: Journal paper
Palavras-chave: Soil quality Composting and manuring Breeding; Genetics and propagation.
Ano: 2014
URL: http://orgprints.org/27912/8/27912.pdf

Seasonal restrictions of bud growth on roots of Cirsium arvense and Sonchus arvensis and rhizomes of Elymus repens
Provedor de dados: 21
Autores: BRANDSÆTER, L.O.; FOGELFORS, H.; FYKSE, H.; Graglia, E.; JENSEN, R.K.; Melander, B.; Salonen, J.; Vanhala, P.
The success of weed management aimed at depleting the regenerative structures of perennial weeds depends largely on the sprouting activity of rhizome and root buds. Seasonal variation in sprouting of these buds on Cirsium arvense, Sonchus arvensis and Elymus repens was studied for plants collected from Denmark, Finland, Norway and Sweden. At 2-week intervals from July to October, 5-cm fragments of roots or rhizomes were cutfrom plantsgrown in buckets and planted into soil in pots, half of which were placed immediately into growth chambers at 18�C for 4 weeks. The other half of the pots were initially placed in a dark room at 2�C for 4 weeks before being transferred to the same growth chamber, also for 4 weeks. During the growth chamber period, the numbers...
Tipo: Journal paper
Palavras-chave: Weed management.
Ano: 2010
URL: http://orgprints.org/17900/1/17900.pdf

Effect of Seaweed Extract and Phosphorous Application on Growth and Yield of Pea Plant
Provedor de dados: 21
Autores: Mohammed, Abdulraheem; Hamdoon, Marwa.
Effect of seaweed extract "kelp 40" and phosphorous application in two pea cultivars was investigated during the growing season 2011/2012. Pea Pisium sativum L. cultivars namely "little Marvel" and "Fabreca" were cultivated and sprayed twice at 3-5 true leaf stage and after two weeks later by "kelp 40" at concentration 0, 2 and 4 ml/l. phosphorous application added after two week from germination at the levels : 0 and 160kg P205/Ha. Data revealed that the effect of "Kelp 40" was positive and correlated with the applied concentrations. Applying with "Kelp 40" increase the response of different growth parameters and yield responses. The effect of phosphorous application gave positive responses in growth and yield. Data showed that varietals differences were...
Tipo: Conference paper, poster, etc.
Palavras-chave: History of organics.
Ano: 2014
URL: http://orgprints.org/23488/1/23488_MM.pdf

Effects of soil degradation and organic treatments on vegetative growth, yield and grape quality
Provedor de dados: 21
Autores: Tardaguila, J.; Storchi, P.; Puccioni, S.; Zombardo, A.; Tangolar, Semih; Tangolar, Serpil; Melike, A.; Kìraz, M.E.; Giffard, B.; Fulchin, E.; Schroers, H.J.; Pelengic, R.; Moreda, E.; Fernandez-Novales, J.; Costantini, E.A.C.
Delimited degraded soil areas caused by an improper land preparation before vine plantation and or management can be observed in conventional and organic European vineyards. Soil malfunctioning including: poor organic matter content, imbalanced nutritional status, altered pH, water deficiency, soil compaction and/or scarce oxygenation. The goal of the present study was to compare the effects of some agronomic strategies to restore optimal soil functionality in degraded areas in organic commercial vineyards located in five countries, and to evaluate the impact of these soil management practices on vegetative growth, yield and grape quality parameters. Grapevines located in non-degraded soils showed higher vegetative growth and yield, and lower total soluble...
Tipo: Journal paper
Palavras-chave: Production systems Composting and manuring Crop health; Quality; Protection Viticulture.
Ano: 2018
URL: http://orgprints.org/33460/1/7898-25702-1-PB.pdf

Combination of different methods for direct control of Vicia hirsuta in winter wheat
Provedor de dados: 21
Autores: Lukashyk, Pavel; Koepke, Ulrich.
Combinations of three different direct methods for controlling Vicia hirsuta (kainite application, flame weeding and harrowing) were investigated in field experiments. They were based on different strategies at early growth stages of V. hirsuta and standardised harrowing at late growth stages. The highest efficacy of kainite application and flame weeding was achieved at the one leaf stage of V. hirsuta. Winter wheat regeneration from damage caused by both kainite and thermal control was satisfactory when treatments were applied at early growth stages (GS 23). Vicia hirsuta plants that survived kainite application or flame weeding were successfully controlled by repeated harrowing at later crop growth stages; crop growth was not affected. Seed production of...
Tipo: Conference paper, poster, etc.
Palavras-chave: Cereals; Pulses and oilseeds.
Ano: 2005
URL: http://orgprints.org/4414/4/4414%2DLukashyk_Koepke_combination_4p_revised%2Ded.pdf

Auxin-mediated relationships between apple plants and root  inhabiting fungi: impact on root pathogens and potentialities  of growth-promoting populations.
Provedor de dados: 21
Autores: Manici, L.; Kelderer, M.; Caputo, F.; Mazzola, M.
This study aimed to elucidate the relationship between plant hosts and root-colonizing fungi recovered from apple orchard soils that had been replanted over multiple generations. Functional relationships of three groups of filamentous fungi (Ceratobasidium sp., Cylindrocarpon-like group and Fusarium acuminatum) with apple rootstocks were evaluated  in plant growth bioassays. The Cylindrocarpon-like group and Ceratobasidium sp. showed a relationship with the host plant varying from pathogenic to commensal through to mutualistic for the latter group, while that of F. acuminatum tended to be mutualistic. Seven fungal isolates of each group, which induced the highest plant growth in bioassays, were evaluated for auxin (IAA) and gibberellin (GA3 and GA4)...
Tipo: Journal paper
Palavras-chave: Soil tillage Biodiversity and ecosystem services Crop health; Quality; Protection.
Ano: 2014
URL: http://orgprints.org/27805/1/EARLY_view_PP.pdf

Root pruning reduces root competition and increases crop growth in a living mulch cropping system
Provedor de dados: 21
Autores: Båth, Birgitta; Kristensen, Hanne L.; Thorup-Kristensen, Kristian.
In two field experiments, growth of white cabbage in pure stands was compared with that of cabbage grown in living mulch systems to reduce pest attacks. The roots of the living mulch were pruned early in the season, with the aim of reducing competition and increasing growth of the white cabbage. Root pruning was shown to increase the above-ground biomass of white cabbage, with two prunings giving higher cabbage yields than one, but there were clear differences between the living mulch species tested (red clover, birdsfoot trefoil, salad burnet, winter rye). Below-ground growth and competition were examined by measuring root distribution in minirhizotrons and uptake of 15N placed at different soil depths. These studies showed that the ability of mulch...
Tipo: Journal paper
Palavras-chave: Crop combinations and interactions; Vegetables.
Ano: 2008
URL: http://orgprints.org/16319/1/EprintsRootPruning.pdf

Eiweiß-, Fett und Energieansatz von Masthühnern einer langsam wachsenden Herkunft unter ökologischen Fütterungsbedingungen
Provedor de dados: 21
Autores: Carrasco Alarcon, Luz Salomé; Bellof, Gerhard; Schmidt, Eggert.
An experiment was carried out to study the protein, fat and energy deposition profiles of male and female slow-growing broilers (ISA J-257) fed with organic diets. Feed mixtures with reduced dietary energy level and essential amino acids (EAAs) were tested. Birds were slaughtered at 0, 14, 28, 42 and 56 d of age. The whole body weight (WBW) was analyzed in each period to calculate the protein, fat and energy deposition. Gompertz growth curves were fitted to the data.   The diets did not affect the studied variables. After 28 d, males had higher WBW growth rates, and at 56 d higher energy and protein deposition rates than females, except for fat. According to the Gompertz curves, males reached higher maximum rates of WBW growth, energy, protein and fat...
Tipo: Conference paper, poster, etc.
Palavras-chave: Feeding and growth; Poultry.
Ano: 2013
URL: http://orgprints.org/21361/1/21361_Carrasco.pdf

Root growth and soil nitrogen depletion by onion, lettuce, early cabbage and carrot
Provedor de dados: 21
Autores: Thorup-Kristensen, K.
Experiments examining root growth, the utilization of N and the effect of green manures were carried out on four vegetable crops. Large differences were observed both in rooting depth penetration rates, and in final rooting depth and distribution. Onion had a very low depth penetration rate, carrot an intermediate rate, and lettuce and cabbage showed high rates. A combination of depth penetration rates and duration of growth determined rooting depth at harvest. Therefore, lettuce, which had a very short growing season, had a shallow root system at harvest, whereas carrot with a lower depth penetration rate but a long growing season had deep rooting at harvest. The final rooting depth of the vegetables varied from approximately 0.3 m for onion to more than...
Tipo: Conference paper, poster, etc.
Palavras-chave: Vegetables.
Ano: 2001
URL: http://orgprints.org/260/1/ActaHort_Root_growth_and.pdf

Impact of temperature and germination time on the success of a C4 weed in a C3 crop: Amaranthus retroflexus and spring barley
Provedor de dados: 21
Autores: Hyvönen, Terho.
Elevation in temperatures due to climate change could promote the invasion by C4 weed species of arable fields in the boreal region, which are dominated by C3 crops. The success of Amaranthus retroflexus L. (a C4 weed) in spring barley (a C3 crop) was studied at current and elevated temperatures (3°C difference) in a greenhouse experiment in southern Finland. The competition treatments included no competition and four levels of competition with barley, differing in terms of germination time. The success of A. retroflexus was measured as growth (height and biomass) and seed production (number and biomass). Elevation in temperature enhanced seed production of A. retroflexus, but the impact on growth was minor (only difference in plant height in one...
Tipo: Journal paper
Palavras-chave: Weed management.
Ano: 2011
URL: http://orgprints.org/19402/1/hyvonen.pdf

Healthy Growth of Values-Based Organic Food Chains - Managing Major Challenges of Expansion: Business Strategies and Instruments Ensuring the Maintenance of Core Organic Values and Consumers’ Trust
Provedor de dados: 21
Autores: Münchhausen, von, Susanne; Häring, Anna Maria; Risku-Norja, Helmi.
Our working group aims to discuss successful approaches of managing increasing quantities of organic food produce - successful in terms of maintaining product quality, trust, integrity and higher value while at the same time increasing turnover. The workshop will focus on two particular aspects. Firstly, the business strategies of growing organic businesses and initiatives, and secondly, the specific instruments used in organisation and management that help to meet the diverging objectives related to growth in turnover on the one hand, and organic values, quality, integrity and trust on the other. In the workshop we will look at these challenges and management options from the perspective of practitioners in the agri-food industry.
Tipo: Conference paper, poster, etc.
Palavras-chave: Markets and trade Networks and ownership Education; Extension and communication Produce chain management.
Ano: 2015
URL: http://orgprints.org/27621/7/2014_Biofach-Workshop-Invitation.pdf

Growth, yield, water and effluent quality in ponds with different management during tambaqui juvenile production
Provedor de dados: 86
Autores: Silva,Ana Maria Dias da; Gomes,Levy de Carvalho; Roubach,Rodrigo.
The objective of this work was to evaluate the effect of pond management on fish feed, growth, yield, survival, and water and effluent quality, during tambaqui (Colossoma macropomum) juvenile production. Fish were distributed in nine 600 m² earthen ponds, at a density of 8 fish per m²; the rearing period was 60 days. Three different pond management were applied: limed and fertilized (LimFer), limed (Lim), and natural (Nat). Fish were fed with a commercial ration containing 34% crude protein three times daily. There were no significant differences in fish growth or yield. Three main items found in tambaqui stomach were insect, zooplankton and ration, without a significant difference among treatments in proportion. Alkalinity, hardness, and CO2 were greater...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colossoma macropomum; Growth; Yield; Diet; Environmental impact.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2007000500017

The effects of arbuscular mycorrhizal fungi inoculation on Euterpe oleracea mart. (açaí) seedlings
Provedor de dados: 86
Autores: Chu,Elizabeth Ying.
With the objective of verifying the response of Euterpe oleracea seedlings to seven arbuscular mycorrhizal fungi species, an experimental trial was carried out under greenhouse conditions. Seeds of E. oleracea were sown in carbonized rice husk. Germinating seeds were initially transferred to plastic cups, containing fumigated Reddish Yellow Quartz Sand and inoculated with arbuscular mycorrhizal fungi. Two months later, seedlings were transferred to 2 kg black plastic bags, containing the same soil without fumigation. Plant growth and mineral nutrients were evaluated nine months after mycorrhizal inoculation. Differential effects were observed among the species tested, with Scutellispora gilmorei being the most effective ones in promoting growth and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant growth; Nutrient content; Infected root length.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999000600013

Phenotypic stability and genetic gains in six-year girth growth of Hevea clones
Provedor de dados: 86
Autores: Gonçalves,Paulo de Souza; Fujihara,Alberto Kazutoshi; Ortolani,Altino Aldo; Bataglia,Ondino Cleante; Bortoletto,Nelson; Segnini Junior,Ivo.
Rubber tree [Hevea brasiliensis (Willd. ex Adr. de Juss.) Müell. Arg.] budgrafts of seven clones were evaluated on five contrasting sites in the plateau region of the São Paulo State, Brazil. The objective of this work was to study the phenotypic stability for girth growth. The experimental design was a randomized block design with three replications and seven treatments. Analysis of variance of girth at six-year plant growth indicated a highly significant clone x site interaction. Only linear sites and clone x site components of clone x year interaction were significant, indicating that the performance of clones over sites for this trait could be predicted. The clones GT 1 and PB 235 showed the greatest stability in relation to girth growth, with foreseen...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rubber tree; Hevea brasiliensis; Heritability; Repeatability.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999000700015

Growth and biomass allocation of the C4 grasses Brachiaria brizantha and B. humidicola under shade
Provedor de dados: 86
Autores: DIAS-FILHO,MOACYR BERNARDINO.
The growth and biomass allocation responses of the tropical forage grasses Brachiaria brizantha cv. Marandu and B. humidicola were compared for plants grown outdoors, in pots, in full sunlight and those shaded to 30% of full sunlight over a 30day period. The objective was to evaluate the acclimation capacity of these species to low light. Both species were able to quickly develop phenotypic adjustments in response to low light. Specific leaf area and leaf area ratio were higher for low-light plants during the entire experimental period. Low-light plants allocated significantly less biomass to root and more to leaf tissue than high-light plants. However, the biomass allocation pattern to culms was different for the two species under low light: it increased...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Specific leaf area; Growth rate; Pastures; Light regimes.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2000001200003

Cultivable mushroom growth-promoting bacteria and their impact on Agaricus blazei productivity
Provedor de dados: 86
Autores: Young,Li-Sen; Chu,Jiunn-Nan; Hameed,Asif; Young,Chiu-Chung.
The objective of this work was to identify growth-promoting bacteria isolated from Agaricus blazei and to evaluate their effect on mushroom mycelial growth and productivity. A total of 56 A. blazei-associated bacterial isolates were obtained from casing soil and identified by 16S rRNA gene sequencing. Bacteria were evaluated as to phosphate-solubilization ability, nitrogen-fixation capability, and secretion of cellulase. Superior isolates were tested for their to effect on A. blazei productivity, micelial growth, and on the contents of the polysaccharide-protein complex and of N, P, K, Ca, and Mg. Bacterial isolates were identified as actinobacteria (60%), firmicutes (20%), and proteobacteria (20%). Among them, ten isolates had phosphate-solubilization...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agaricus blazei; Bioprospecting; Fresh mushroom yield; Polysaccharide-protein complex.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013000600009

Prohexadione calcium on shoot growth of 'Starkrimson' pear trees
Provedor de dados: 86
Autores: Pasa,Mateus da Silveira; Einhorn,Todd.
Abstract: The objective of this work was to evaluate the fruiting and vegetative growth of 'Starkrimson' pear in response to the application of prohexadione calcium (P-Ca). P-Ca (250 mg L-1) was sprayed to scaffold limbs and to whole trees in commercial orchards. A randomized complete block design was used to minimize declivity effects. Vegetative growth (length and number of shoots, increment in limb and trunk cross-sectional area, number of nodes, and internode length), production (fruit number, yield, yield efficiency, and fruit size), and return bloom were evaluated from 2010 to 2013. P-Ca efficiently controlled shoot growth in all growing seasons, when applied early in the season, due to the reduction in internode length. Production was not negatively...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pyrus communis; Modern orchard; Plant growth regulator; Vigor control.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000200075

Effect of vermicompost on the growth and health of Impatiens wallerana
Provedor de dados: 85
Autores: Asciutto,K; Rivera,MC; Wright,ER; Morisigue,D; López,MV.
Rhizoctonia solani damping-off and root rot diseases are frequent in impatiens crops in Buenos Aires. Their control is based in fungicide use. In a sustainable nursery production, beneficial microorganisms that develop in organic amendments may suppress diseases and promote plant growth. The aim of this work was to evaluate the effect of different proportions of vermicompost on the growth and health of patience-plant (Impatiens wallerana). The experiment was carried out in a polyethylene greenhouse. Treatments were defined as follows: infested substrate, substrate, sterilized substrate, vermicompost, and vermicompost mixed with infested substrate at 75, 50 and 25% by volume. Seeds of I. wallerana were sown in plugs containing the different substrates....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vermicompost; Growth; Damping-off; Impatiens wallerana.
Ano: 2006
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572006000100012

Weed control under integrated nutrient management systems in faba bean (Vicia faba) production in Egypt
Provedor de dados: 87
Autores: El-Metwally,I.M.; Abdelhamid,M.T.
Two field experiments were conducted in two successive seasons, 2005/2006 and 2006/2007, to determine whether management can improve faba bean competitiveness with weeds, thus helping to achieve its yield potential. The experiment included five treatments, composed of organic and mineral fertilizers, alone and mixed at different rates, along with a control and six weed control treatments, including oxadiargyl, prometryn, hand hoeing treatments alone or mixed with the herbicides, and a nonweeded treatment (control).The herbicide treatments were not superior to the two hand-hoeing treatments. Using compost favored growth and yield of faba bean more than of weeds. Adding fertilizer also improved most yield parameters. Application of compost alone or combined...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Faba bean; Integrated nutrient management system; Integrated weed management.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582008000300014

Eucalyptus growth in silvopastoral system under different crown dia meters
Provedor de dados: 87
Autores: Machado,M.S.; Ferreira,L.R.; Oliveira Neto,S.N.; Moraes,H.M.F.; Gonçalves,V.A.; Felipe,R.S.
The aim of this study was to evaluate the effect of different crown diameters on the early growth of eucalyptus intercropped with Brachiaria decumbens in a silvopastoral system. The experiment was conducted in a B. decumbens established pasture, where hybrid eucalyptus urograndis (clone GG100) was planted, spaced 8 x 3 m. A randomized block design was used, with six replicates. Treatments consisted of five crown diameters (0.0, 1.0, 1.5, 2.0, and 3.0 m) surrounding the eucalyptus plants. Five weeding hoes were performed throughout the experiment, according to the different crown diameters, aiming to maintain the eucalyptus plants free from B. decumbens interference. At 90, 180, 270, and 360 DAP, the height and the diameter of the eucalyptus plants were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agroforestry systems; Weed competition; Control ranges.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000400011

Soil Mediated Allelopathic Effect of Echinochloa colona on Germination and Seedling Growth of Zea mays
Provedor de dados: 87
Autores: MAJEED,M.A.; TANVEER,A.; TAHIR,M.; AHMAD,R.
ABSTRACT: The soil mediated allelopathic effect of Echinochloa colona (L.) Link (jungle rice) was investigated on seed germination and seedling growth of Zea mays L. (maize). The experiment was conducted in the Agronomy farm of the University of Agriculture, Faisalabad, Pakistan. This study investigated the effect of different concentrations (1, 2, 3, 4 and 5% on w/w basis) of soil incorporated E. colona plant residues on emergence and seedling growth of maize and compared them with residue free soil (control). The results revealed the significant increase with soil incorporated E. colona residues in maize seedling growth till 2% E. colona plant residues, and an inhibitory effect was noticed over 2% E. colona plant residues in comparison to the control...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelopathy; Emergence; E. colona; Maize; Weed residues; Seedling growth.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100326

SUNFLOWER PLANT RESPONSE TO SIMULATED DRIFT OF GLYPHOSATE AND TRINEXAPAC-ETHYL
Provedor de dados: 87
Autores: VITAL,R.G.; JAKELAITIS,A.; COSTA,A.C.; SILVA,F.B.; BATISTA,P.F.
ABSTRACT Chemical ripeners are frequently used on sugarcane crops in order to increase profitability. However, the drift of these products to neighbouring fields can expose susceptible non-target plants, such as sunflower, to these agents causing indirect impacts on growth and development. Therefore, this study aimed to assess the toxicity characterize possible changes in the growth of sunflower plants exposed to simulated drift of the ripeners glyphosate and trinexapac-ethyl. For each ripener, the following doses were used: glyphosate (0 (control), 3.6, 7.2, 14.4, 28.8 and 86.4 g a.e ha-1) and trinexapac-ethyl (0, 3.12, 6.25, 12.50, 25 and 75 g a.i ha-1). The effects of these products on plant height, number of leaves, leaf area, stem diameter and dry...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Helianthus annus; Phytotoxicity; Herbicide; Growth regulator.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100234

Can Allelopathic Grasses Limit Seed Germination and Seedling Growth of Mutambo? A Test with Two Species of Brachiaria Grasses
Provedor de dados: 87
Autores: OLIVEIRA,A.P.P.; PEREIRA,S.R.; CÂNDIDO,A.C.S.; LAURA,V.A.; PERES,M.T.L.P.
ABSTRACT Tree establishment in pasture areas can be inhibited, at least in part, by exotic grasses allelopathy and this can represent an important limitation by changing the patterns of both germination and seedling growth of tree species. This study aims to evaluate the allelopathic potential of Urochloa brizantha and U. decumbens on germination, growth and metabolism of Guazuma ulmifolia seedlings. We performed bioassays evaluating the effect of the crude ethanol extract and semipurified fractions (hexane fraction, ethyl acetate fraction and ethanol-water fraction) of U. brizantha and U. decumbens using completely randomized design, with four concentrations (0, 250, 500, 1,000 mg L-1) and four replications. The variables analyzed were germination...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Guazuma ulmifolia; Interference competition; Exotic grasses; Direct sowing; Restoration; Urochloa.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000400639

Sunflower response to repeated foliar applications of Paclobutrazol
Provedor de dados: 87
Autores: KOUTROUBAS,S.D.; DAMALAS,C.A.
Paclobutrazol (PBZ), a well-known growth retardant of the triazole family, is mostly used for controlling plant size and growth, resulting in more desirable compact plants for floricultural purposes; however, limited experimental data are available for use of PBZ in field sunflower. The objective of this study was to evaluate the effect of repeated foliar applications of PBZ at rates of 50 + 50 g ha-1(double application) and 50 + 50 + 50 g ha-1 (triple application) on sunflower morphology and productivity. PBZ applications corresponded to growth stages of four to five, five to six, and six to eight true leaves of sunflower plants, respectively. The double foliar application of PBZ reduced sunflower plant height at maturity by 4.4% (or by 11.7 cm). The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Achene yield; Growth retardants; Height; Lodging.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000100129

Modeling the Emergence and Growth of Alligatorweed at Different Field Capacity Levels
Provedor de dados: 87
Autores: AHMAD,T.; TANVEER,A.; NADEEM,M.A.; YASEEN,M.
ABSTRACT: A study focusing on different field capacity levels was planned in the Weed Science Lab, Department of Agronomy, University of Agriculture Faisalabad. Fresh alligatorweed was harvested from the Agronomy fields and cuttings (2 cm length) were made from it. These cuttings were placed at 25%, 50%, 75% and 100% field capacity levels in pots for 25 days. The results of the experiments revealed that at all field capacity levels, fragments of alligatorweed were able to sprout and grow. Increased moisture levels significantly increased the emergence ability and survival of the alligatorweed plants upto a certain level. Compared with the control (25% FC), emergence time of the sprouts in the maximum moisture regime (100% of FC) decreased by 40% (12.94...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Humidity soil conditions; Invasive weed; Seedling growth.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100238

Development of Different Grass Species with the Use of the Growth Regulator Trinexapac-Ethyl
Provedor de dados: 87
Autores: MARCHI,S.R.; SILVA JUNIOR,A.C.; MARTINS,D.
ABSTRACT: The use of synthetic compounds to retard the growth of lawns aims at reducing the number of operations for their maintenance. Thus, the main goal of the present study was to evaluate the effect of different doses of trinexapac-ethyl on the development and rooting of five different grass species. Bahiagrass, St. Augustine grass, Japanese lawn grass, Bermuda grass and, broadleaf carpetgrass were grown in pots of 20 L. The experimental design was completely randomized, with four replications. Trinexapac-ethyl (g ha-1) was applied at doses of 113+113, 226+113, 226+226, 452+113, 452+226, 452+452 in a sequential spraying, and also at single doses of 678 and 904. The second application was carried out 14 days after the first. On the day prior to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Paspalum notatum; Stenotaphrum secundatum; Zoysia japonica; Cynodon dactylon; Axonopus compressus; Plant growth regulator.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100270

Use of Prohexadione Calcium on Grass Species Development
Provedor de dados: 87
Autores: QUEIROZ,J.R.G.; SILVA JR.,A.C.; MARTINS,D.
ABSTRACT: This study has aimed to evaluate the effect of prohexadione-calcium as a plant growth regulator on growth and quality of Japanese lawn grass, Broadleaf carpet grass and Bermudagrass. The treatments and doses of the prohexadione-calcium tested with two three reapplications were 27.5, 55.0, 110.0, 165.0 and 165.0 g a.i. ha-1, and a control without application of a growth regulator. Visual injury evaluations were performed using a scale of scores and plant height and chipping dry matter were determined. We have evaluated the total thickness of the sod grass, root length and dry matter of this material at the end of the experimental period. The study was arranged in a completely randomized design with four replications. The results were submitted to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: PGR; Sequential application; Turfgrasses; Zoysia japonica; Axonopus compressus; Cynodon dactylon.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100271

Early growth of common bean cropped over ruzigrass residues
Provedor de dados: 87
Autores: Souza,E.F.C.; Fernandes,A.M.; Souza-Schlick,G.D.; Rosolem,C.A.
Ruzigrass (Brachiaria ruziziensis, syn. Urochloa ruziziensis) is used as a cover crop in tropical regions because it has a high yield potential, is widely adapted and has a vigorous root system. However, it may affect early growth of the next crop due to allelopathy and competition for soil nitrate. A greenhouse experiment was conducted in glass-walled pots with soil to determine the effect of ruzigrass residues on the initial growth and mineral nutrition of common bean (Phaseolus vulgaris). Ruzigrass was grown in the pots for 50 days and chemically desiccated. Then, common bean was grown: without ruzigrass residues; with ruzigrass shoots placed on the soil surface; with ruzigrass roots left in the soil; and with ruzigrass shoots and roots left...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Urochloa ruziziensis; No-tillage; Allelopathy.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000400012

Growth and Development of Ipomoea Weeds
Provedor de dados: 87
Autores: BARROSO,A.A.M.; FERREIRA,P.S.H.; MARTINS,D.
ABSTRACT: Weeds reduce the productive potential of crops. Plants of the Ipomoea genus, besides competing for water, light, space and nutrients, create problems in crop harvests due to their volatile stems. The objective of this work was to evaluate the growth and development of five Ipomoea species. For such, Ipomoea grandifolia, Ipomoea hederifolia, Ipomoea nil, Ipomoea purpurea and Ipomoea quamoclit plants were analyzed during the summer and winter season. Five destructive and periodic growth evaluations were carried out for each study, where leaf number, leaves, stems, roots and the total biomass were analyzed. Phenological stages of the plant development were also evaluated for emergence, flowering and maturation sub-periods by degree-days, totalizing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Morning glory species; Ipomoea grandifolia; Ipomoea hederifolia; Ipomoea nil; Ipomoea purpurea; I. quamoclit.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100233

Growth and development of sourgrass based on days or thermal units
Provedor de dados: 87
Autores: Marques,B.S.; Silva,A.P.P.; Lima,R.S.O.; Machado,E.C.R.; Gonçalves,M.F.; Carvalho,S.J.P.
This work was carried out with the objective of evaluating growth and development of sourgrass (Digitaris insularis) based on days or thermal units (growing degree days - GDD). Two independent trials were developed aiming to quantify the species' phenological development and total dry matter accumulation in increasing or decreasing photoperiod conditions. Plants were grown in 4 L plastic pots, filled with commercial substrate, adequately fertilized. In each trial, nine growth evaluations were carried out, with three replicates. Phenological development of sourgrass was correctly fit to time scale in days or GDD, through linear equation of first degree. Sourgrass has slow initial growth, followed by exponential dry matter accumulation, in increasing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Digitaria insularis; Growing degree days; Phenology; Dry matter; Biology.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000300003

Growth and Development of Purple Nutsedge Based on Days or Thermal Units
Provedor de dados: 87
Autores: Lima,R.S.O.; Machado,E.C.R.; Silva,A.P.P.; Marques,B.S.; Gonçalves,M.F.; Carvalho,S.J.P.
This work was carried out with the objective of elaborating mathematical models to predict growth and development of purple nutsedge (Cyperus rotundus) based on days or accumulated thermal units (growing degree days). Thus, two independent trials were developed, the first with a decreasing photoperiod (March to July) and the second with an increasing photoperiod (August to November). In each trial, ten assessments of plant growth and development were performed, quantifying total dry matter and the species phenology. After that, phenology was fit to first degree equations, considering individual trials or their grouping. In the same way, the total dry matter was fit to logistic-type models. In all regressions four temporal scales possibilities were assessed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cyperus rotundus; Growing degree days; Phenology; Base temperature; Modeling.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000200165

Sourgrass densities affecting the initial growth and macronutrient content of coffee plants
Provedor de dados: 87
Autores: Carvalho,L.B; Alves,P.L.C.A; Bianco,S.
The objective of this work was to evaluate the coexistence effects of coffee (Coffea arabica) with densities of sourgrass (Digitaria insularis) on crop macronutrient content and plant growth. The experiment was conducted in plots where one coffee plant was maintained in coexistence with 0 (weed-free check), 1, 2, 4, 8, and 16 sourgrass plants, using a completely randomized design with three replicates. Reduction of coffee growth and macronutrient content, except P that increased, started when the coexistence occurred with sourgrass plants in a density of 1 plant per plot. In general, macronutrient content was reduced by 18-50%, while growth characteristics were reduced by 9-41%, when coffee plants coexisted with 16 plants of sourgrass. Thus, sourgrass...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea arabica; Digitaria insularis; Competition; Additive experiment; Nutrients.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000100012

Growth inhibitors in turfgrass
Provedor de dados: 87
Autores: March,S.R.; Martins,D.; McElroy,J.S.
Well-maintained lawns are comfortable and safe places for leisure activities and sports practice, and they also bring environmental benefits; for example, they reduce soil exposure to erosion and releases atmospheric CO2, thus reducing the greenhouse effect. However, regardless of the purpose of use or the choice of the plant species to form the lawn, the highest costs involve cutting that is needed to keep the turfgrass at its appropriate height. Successive lawn cutting operations are necessary basically because of the vegetative and reproductive growth of turfgrass which, in Brazil, occurs mainly from October to March. Expenditures with successive mechanical cuttings have fostered the search of alternative procedures to keep lawn plants at appropriate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth regulator; Lawn; Bio-stimulant; Injury; Selectivity; Herbicide.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000300025

Allelopathic effects of Rhynchosia capitata on germination and seedling growth of mungbean
Provedor de dados: 87
Autores: Ali,H.H.; Tanveer,A.; Nadeem,M.A.; Javaid,M.M.; Kashif,M.S.; Chadhar,A.R.
Experiments were conducted to evaluate the allelopathic influence of Rhynchosia capitata on germination and seedling growth of mungbean (Vigna radiate) along with identification of the phytotoxic substances responsible for this activity. Water extracts of root, shoot, leaf, fruit and whole plant were prepared by soaking them in water in a ratio of 1:20 (w/v) for 24 h. All the extracts affected germination and seedling growth of mungbean, but higher inhibition was seen with R. capitata leaf water extracts. A linear decrease in the germination characteristics of mungbean was observed with the decrease in the concentration of leaf extract from 5% to 1%. The soil-incorporated residues (1-4% w/w) of R. capitata stimulated the growth of root and hypocotyl at low...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phytotoxic; Phenolic; Allelopathy; Residues; Concentration; Water extracts.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000300002

Initial growth and competitive ability of yellow nutsedge and irrigated rice
Provedor de dados: 87
Autores: Westendorff,N.R.; Agostinetto,D.; Ulguim,A.R.; Langaro,A.C.; Thürmer,L.
Weeds cause significant reduction in the irrigated rice crop yield. Cyperus esculentus (yellow nutsedge) is adapted to irrigate environment. Information on the competitive ability of the weed to the culture, and their environmental adaptation, are scarce. In this study, we sought to determine the initial growth and competitive ability of yellow nutsedge and irrigated rice, as a function of cultivar growth cycle. Initial growth and competition studies were conducted in a randomized complete design in a greenhouse in the agricultural year 2010/11. For the initial growth study, the treatments consisted of a factorial combination of a biotype of yellow nutsedge and two rice cultivars in the function of the vegetative cycle (BRS Querência: early cycle - IRGA...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cyperus esculentus; Oryza sativa; Competition; Fitness.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000400007

Growth, Development and Seed Production of Goosegrass1
Provedor de dados: 87
Autores: TAKANO,H.K.; OLIVEIRA JR,R.S.; CONSTANTIN,J.; BRAZ,G.B.P.; PADOVESE,J.C.
ABSTRACT E. indica is one of the most problematic weeds in the world because it is present in almost every continent, and there are reports of multiple resistance to herbicides by some biotypes. The objective of this paper was to analyze the growth, the development and the production of this plant's seeds, in order to generate information about its biology that can be useful for management. The experiment was carried out in a greenhouse from May to September 2015. Sixteen samples were taken during the development cycle of the plant: 3, 10, 17, 24, 31, 38, 45, 52, 59, 66, 73, 80, 87, 94, 101 and 108 days after emergence (DAE). The response variables were based on a leaf area and dry matter of each one of the parts of the plant and the number of seeds...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eleusine indica; Relative growth; Biomass allocation; Weed biology.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000200249

Poverty and Agricultural Growth: Chile in the 1990s
Provedor de dados: 31
Autores: Lopez,   Ramon E.; Anriquez,   Gustavo.
This paper analyzes the roles of agriculture in reducing poverty. Following the methodology proposed by Lopez (2002), three channels by which agricultural growth reduces poverty are tested: (i) its effects on the real wage of unskilled workers (and/or its possible effect in reducing their unemployment); (ii) the direct impact of agricultural growth on the income of poor farmers; and, (iii) the effect on real food prices. The paper concludes that the pro-poor role of agricultural expansion is dramatic. Agricultural growth tends to improve all measures of poverty significantly with head count falling around 7.3% as a consequence of a 4.5% increase in agricultural output. An important result is that while the economy-wide effects taking place via food prices...
Tipo: Journal Article
Palavras-chave: Agricultural growth; Chile; Poverty; Rural development; Community/Rural/Urban Development; Food Security and Poverty.
Ano: 2004
URL: http://purl.umn.edu/12013

Evaluating Different Growth Scenarios for Organic Farming Using Bayesian Techniques
Provedor de dados: 31
Autores: Gardebroek,   Cornelis.
Different views exist on the future development of organic agriculture. The Dutch government believes that in 2010 10% of the farm land will be used for organic farming. Others have a more radical view: due to increasing emphasis on sustainable production in the end all farming will be organic. Others believe in a more pessimistic scenario in which the recent growth in organic was just a temporary upswing and that the share of organic farmers already reached its maximum. In this paper different potential scenarios for the further growth of organic farming are evaluated using Bayesian techniques. A nonlinear logistic growth model explaining the share of organic farms is estimated using available historical data for Dutch agriculture. Various scenarios imply...
Tipo: Conference Paper or Presentation
Palavras-chave: Organic farming; Bayesian analysis; Non-linear logistic growth curves; Farm Management.
Ano: 2008
URL: http://purl.umn.edu/44211

Climate change policy in a growing economy under catastrophic risks
Provedor de dados: 31
Autores: Tsur,   Yacov; Zemel,   Amos.
Under risk of catastrophic climate change, the occurrence hazard is added to the social discount rate. As a result, the social discount rate (i) increases and (ii) turns endogenous to the global warming policy. The second effect bears profound policy implications that are magnifed by economic growth. In particular, it implies that green- house gases (GHG) emission should gradually be brought to a halt. Due to the public bad nature of the catastrophic risk, the second effect is ignored in a competitive allocation and unregulated economic growth will give rise to excessive emissions. We find that the GHG emission paths under the optimal and competitive growth regimes lie at the extreme ends of the range of feasible emissions. We derive the Pigouvian hazard...
Tipo: Working or Discussion Paper
Palavras-chave: Abrupt climate change; Environmental catastrophes; Economic growth; Emission policy; Hazard rate; Environmental Economics and Policy; H23; H41; O13; O40; Q54; Q58.
Ano: 2007
URL: http://purl.umn.edu/7132

Mudanças nos Padrões dos Rendimentos de Agregados Familiares Rurais em Moçambique de 1996 a 2002 e suas Implicações para a Contribuição da Agricultura para a Redução da Pobreza
Provedor de dados: 31
Autores: Boughton,   Duncan; Mather,   David; Tschirley,   David L.; Walker,   Thomas S.; Cunguara,   Benedito; Payongayong,   Ellen M.
Ministry of Agriculture and Rural Development, Directorate of Economics, Republic of Mozambique
Tipo: Working or Discussion Paper
Palavras-chave: Food security; Food policy; Mozambique; Household; Income; Poverty; Food Security and Poverty; Q18.
Ano: 2006
URL: http://purl.umn.edu/56067

Major Demographic Changes in Bangladesh and their Socio-economic Correlates: Analysis of Trends
Provedor de dados: 31
Autores: Mohammad,   Hossain; Tisdell,   Clement A.
Catalogues the demographic changes in Bangladesh during the period 1975-2000 and examines how they relate to key socio-economic attributes.  Trends are examined in population growth, growth of the working age population, women’s workforce participation, age-dependency ratio, female-male ratio, longevity, fertility, mortality and mean age at first marriage.  Bangladesh has made significant breakthroughs in all these areas, a feat not matched by most other South Asian countries, but comparable with the South-East Asia region as whole.  The study isolates factors contributing to the changes in each attribute.  It assesses the correlation between Bangladesh’s demographic changes and selected socio-economic indicators namely, its per capita GDP, female labour...
Tipo: Working or Discussion Paper
Palavras-chave: Population growth; Growth of the working age population; Women’s workforce participation; Bangladesh; International Development; Labor and Human Capital.
Ano: 2003
URL: http://purl.umn.edu/106950

Africa Without borders: Building Blocks For Regional Growth
Provedor de dados: 31
Heavy investment in many aspects of development is needed to bring Africa into the world economy. With a large share of their populations living and working in the rural economy, many African governments are emphasizing the agricultural sector in their strategies for economic growth, poverty reduction, and food security. A growing commitment to market-oriented agricultural growth is reflected in numerous high-level government statements as well as in the Comprehensive Africa Agriculture Development Programme (CAADP) of the New Partnership for Africa’s Development (NEPAD). Although many investments in agricultural growth are necessarily country-focused, there are economic reasons for African countries to coordinate and cofinance some of these efforts. The...
Tipo: Report
Palavras-chave: Community/Rural/Urban Development.
Ano: 2005
URL: http://purl.umn.edu/42485

Uncovering Productivity Growth in the Disaggregate:  Indonesia's Dueling Agricultural Sub-Sectors
Provedor de dados: 31
Autores: Rada,   Nicholas E.; Buccola,   Steven T.; Fuglie,   Keith O.
The success of seed-fertilizer technologies and government subsidies in attaining nearly self-sufficient rice production in the mid-1980s encouraged the Indonesian government soon afterward to shift resources away from food crops and toward export-oriented crops.  These shifts were reinforced by trade liberalization and a sharp devaluation of the rupiah after the 1997 Asian financial crisis, which exerted Indonesia’s comparative advantage in tropical perennial products.  In the present paper, we ask whether such events have altered Indonesia’s agricultural growth strategy from a food-crop to an export-crop one.  With an innovative multi-output stochastic distance frontier model and provincial production and policy-related data from 1985 to 2005, we...
Tipo: Conference Paper or Presentation
Palavras-chave: Agricultural research; Indonesia; Shephard distance function; Stochastic frontier; Technical change; Technical efficiency; International Development; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2010
URL: http://purl.umn.edu/61021

A POLICY AGENDA FOR PRO POOR AGRICULTURAL GROWTH
Provedor de dados: 31
Autores: Dorward,   Andrew; Kydd,   Jonathan; Morrison,   Jamie; Urey,   Ian.
Economic growth has been low and the incidence and numbers of poor people remain very high in some parts of the world, notably in sub Saharan Africa and some parts of South Asia. Projections for poverty reduction suggest that these regions are likely to continue to hold very large numbers of very poor rural people in the foreseeable future. Theoretical arguments and empirical evidence suggest that in poor agrarian economies both the processes of structural change within national economies and micro-economic relations within rural economies give agriculture (and particularly intensive cereal based growth) a pre-eminent and unique role in economic development and in poverty reduction. However, reliance on pro-poor agricultural growth as the main weapon...
Tipo: Working or Discussion Paper
Palavras-chave: Food Security and Poverty; International Development.
Ano: 2002
URL: http://purl.umn.edu/10923

Firm Heterogeneity, Contract Enforcement, and the Industry Dynamics of Offshoring
Provedor de dados: 31
Autores: Naghavi,   Alireza; Ottaviano,   Gianmarco I.P.
We develop an endogenous growth model to study the long run consequences of offshoring with firm heterogeneity and incomplete contracts. In so doing, we model offshoring as the geographical fragmentation of a firm’s production chain between a home upstream division and a foreign downstream one. On the positive side, we show that, when contracts are incomplete, the possibility of offshoring has favorable implications for economic growth. Yet, offshoring induced by a higher bargaining power of the upstream division can hamper growth: while there is always a positive correlation between upstream bargaining weight and offshoring activities, there is a non-monotonic relationship between these and growth. Whether offshoring with incomplete contracts also...
Tipo: Working or Discussion Paper
Palavras-chave: Offshoring; Heterogeneous Firms; Incomplete Contracts; Growth; Industry Dynamics; Industrial Organization; D23; F23; L23; O31; O43.
Ano: 2009
URL: http://purl.umn.edu/52542

Impeded Industrial Restructuring: The Growth Penalty
Provedor de dados: 31
Autores: Audretsch,   David B.; Carree,   M.A.; van Stel,   A.J.; Thurik,   A.R.
This paper documents that a process of industrial restructuring has been transforming the developed economies, where large corporations are accounting for less economic activity and small firms are accounting for a greater share of economic activity. Not all countries, however, are experiencing the same shift in their industrial structures. Very little is known about the cost of resisting this restructuring process. The goal of this paper is to identify whether there is a cost, measured in terms of forgone growth, of an impeded restructuring process. The cost is measured by linking growth rates of OECD countries to deviations from the optimal industrial structure. The empirical evidence suggests that countries impeding the restructuring process pay a...
Tipo: Working or Discussion Paper
Palavras-chave: Industry structure; Firm size distribution; Entrepreneurship; Economic growth; Industrial Organization; O11; L11.
Ano: 2000
URL: http://purl.umn.edu/26254

Agricultural Productivity in the United States
Provedor de dados: 31
Autores: Ahearn,   Mary Clare; Yee,   Jet; Ball,   V. Eldon; Nehring,   Richard F.
Increased productivity is a key to a healthy and thriving economy. Consequently, the trend in productivity, economywide, is one of the most closely watched of our common economic performance indicators. Agriculture, in particular, has been a very successful sector of the U.S. economy in terms of productivity growth. The U.S. farm sector has provided an abundance of output while using inputs efficiently. Agricultural productivity growth has been an important source of U.S. economic growth throughout the century, but the years since 1940 have seen an even faster growth in agricultural productivity. The annual average increase in productivity from 1948 to 1994 was 1.94 percent. This reflects an annual growth in output of 1.88 percent per year and an actual...
Tipo: Report
Palavras-chave: Productivity; Efficiency; Agricultural production; Outputs; Inputs; Productivity Analysis.
Ano: 1998
URL: http://purl.umn.edu/33687

Total Factor Productivity Growth in Agriculture:  A Malmquist Index Analysis of 14 Countries, 1979-2008
Provedor de dados: 31
Autores: Zúniga-González,   Carlos Alberto.
This paper don´t was submitted on the conference, however the author participated on the event. He member of the European Association of Agricultual Ecnomist (EAAE)
Tipo: Conference Paper or Presentation
Palavras-chave: Total Factor Productivity Growth; Malmquist Index; Data Envelopment Analysis; Productivity Analysis; D: 24; O: 13; O: 47; P: 51; Q: 10.
Ano: 2011
URL: http://purl.umn.edu/114036

Empirical Analysis on the Relations between Rural Residents' Consumption and Economic Growth - A Case of Liaoning Province
Provedor de dados: 31
Autores: Wei,   Yanan; Li,   Fei; Wei,   Wenhui.
Liaoning is a granary province with a large agricultural population and great market potential. Expanding rural residents’ consumption becomes a necessity for enlarging domestic demand, solving three agriculture problems and promoting sustainable and rapid economic development. The research shows that since invigorating old industrial base in Liaoning, the contribution rate of rural residents' consumption to economic motivation is low and unstable, which has become one of the choke points for the development of economy. By using the grey correlation method, the influences of rural residents' consumption in different periods to GDP per capita are analyzed, the results show that the consumption level of rural residents were increasing, but their contribution...
Tipo: Journal Article
Palavras-chave: Rural residents' consumption; Economic growth; Grey relational degree; China; Agribusiness.
Ano: 2011
URL: http://purl.umn.edu/118295

Examination of New Zealand's Agricultural Sector in Response to Economic Growth and Changing Trade Relations with China
Provedor de dados: 31
Autores: Wallace,   Michael; Shakur,   Shamim.
China’s growth performance over the last three decades has stood at a phenomenal nine percent per annum and shows little sign of abating despite challenging market conditions in recent times. With ever increasing demand and limited land availability this is set to have an increasing impact on New Zealand which has a comparative advantage in land-intensive agricultural products. Already this is observable in recent trade statistics. Using GTAP (global trade analysis project), a computable general equilibrium (CGE) model, this research estimates the future effects of Chinese growth to New Zealand’s agricultural sectors and its economy in general. Almost all primary industries in New Zealand can expect to benefit from China’s growth, most notably wool and...
Tipo: Conference Paper or Presentation
Palavras-chave: Agricultural and Food Policy; International Relations/Trade; Production Economics.
Ano: 2011
URL: http://purl.umn.edu/115416

Public Investment and Poverty Reduction in Tanzania: Evidence from Household Survey Data
Provedor de dados: 31
Autores: Fan,   Shenggen; Nyange,   David; Rao,   Neetha.
Several recent IFPRI studies have measured the effects of public spending on growth and poverty reduction in selected Asian countries using pooled time-series and cross-region data. However, many African countries lack such data. Using Tanzania as a test case, this study demonstrates how household survey data can be used to assess the impacts of public investments on growth and poverty. A two step procedure is used. First, household survey data are used to link household welfare measures to human capital and household access to infrastructure and technology, while controlling for other community and household characteristics. The second step links household human capital and access to infrastructure and technology to past public investments in these...
Tipo: Working or Discussion Paper
Palavras-chave: Human capital Agricultural research-Africa Public Expenditures; Investments; And Finance Infrastructures Welfare and Poverty Monitoring development outcomes Food Security and Poverty.
Ano: 2005
URL: http://purl.umn.edu/58373

Accelerating Africa's Structural Transformation Lessons from East Asia
Provedor de dados: 31
Autores: Gabre-Madhin,   Eleni Z.; Johnson,   Bruce F.
In most countries in sub-Saharan Africa at present, the majority of the population is engaged in agriculture, with economies in the very early stages of structural transformation - the process whereby a predominantly agrarian economy is transformed into a diversified and productive economy dominated by manufacturing and services. These countries are characterized by low levels of farm productivity, limited growth of non-farm employment and high rates of population growth. This paper focuses on the factors involved in fostering a country’s structural transformation. This process of transformation has many dimensions. Among these we emphasize interactions between four factors: increased agricultural productivity, rural industrialization, the expansion of...
Tipo: Working or Discussion Paper
Palavras-chave: Sub-Saharan Africa; Industrialization; Developing Countries; East Asia; International Development.
Ano: 1999
URL: http://purl.umn.edu/97383

FOOD EXPENDITURES BY U.S. HOUSEHOLDS:  LOOKING AHEAD TO 2020
Provedor de dados: 31
Autores: Blisard,   Noel; Variyam,   Jayachandran N.; Cromartie,   John.
By 2020, the effects of demographic changes and income growth will increase per capita spending on food 7.1 percent. Income growth alone, which will effect spending increases of almost 10 percent on away-from-home foods and 3 percent on at-home foods, will raise per capita food spending about 6 percent. Expansion of the Nation's population will drive growth in food demand and, combined with rising incomes and other demographic changes, is projected to boost total U.S. food spending 26.3 percent. On a national level, the slow but steady growth of the population will result in little variation among expenditure growth levels of individual food groups. The largest projected increase is for fruits, up 27.5 percent, while the smallest is for both beef and...
Tipo: Report
Palavras-chave: Household food expenditures; Income; Demographics; Projections; Consumer Expenditure Survey; Food Consumption/Nutrition/Food Safety.
Ano: 2003
URL: http://purl.umn.edu/34045

Carrying Capacity of Cultivated Land in Henan Province
Provedor de dados: 31
Autores: Jie,   Li; Hong,   Lin.
According to the 1998-2008 Henan Statistic Yearbook, Grey Forecasting Model and Time Series Model are used to forecast the carrying capacity of cultivated land in Henan Province. According to the contradiction between limited carrying capacity of cultivated land and the growth of population and food safety, we should strictly implement land use planning, enhance the land protection awareness of farmers, establish effective mechanism of cultivated land protection, promote the land ecumenical and intensive use, actively carry out the land consolidation, strengthen law enforce, and improve the land use efficiency in order to protect the cultivated land. Result shows that natural population growth rate is gradually reduced in Henan Province and the increasing...
Tipo: Journal Article
Palavras-chave: Carrying capacity of cultivated; Grey Forecasting Model; Cultivated land protection; China; Agribusiness.
Ano: 2010
URL: http://purl.umn.edu/93240

Productivity Growth, Technical Efficiency and Technical Change on Minnesota Farms
Provedor de dados: 31
Autores: Olson,   Kent D.; Vu,   Linh.
Changes and trends in farm productivity have been of intense interest to many involved with agriculture. This study used data envelopment analysis (DEA) to estimate the output-oriented Malmquist total factor productivity (TFP) index from panel data for 1993-2006 for farms in Southern Minnesota. Bootstrap methods were used to estimate confidence intervals for the productivity, efficiency change and technical change indices. The model included three inputs (labor, land and immediate expenditures) and six outputs (corn, soybean, milk, hog, beef, and nonfarm income). Productivity growth was found to be positive during the period, with an average annual productivity growth of 6.6 percent. However, TFP growth has been slowing down in recent years and indeed...
Tipo: Conference Paper or Presentation
Palavras-chave: Total factor productivity; Farms; Malmquist index; Data envelopment analysis; DEA; Bootstrap; Government subsidies; Farm Management; Productivity Analysis; Q12; C14.
Ano: 2009
URL: http://purl.umn.edu/49204

Government expenditures on agriculture in Latin America
Provedor de dados: 31
Autores: Elias,   Victor Jorge.
Government expenditure is primarily determinant of the pace and pattern of agricultural growth. The size of government allocations to agriculture is an important indicator of government commitment to agricultural growth. How the resource are allocated is an important determinant of the efficiency of agriculture growth. Despite the central role of government expenditure little comparative analysis has been made of its size, its allocation, and its effect on agricultural production. As a result, there has been little pressure to develop an adequate data base for such requisite data discourages initiation of such analysis. In the research reported her Victor Elias concentrates on developing an adequate data base for analyzing government expenditures on...
Tipo: Report
Palavras-chave: Agriculture and state; Latin America; Economic aspects; Agricultural and Food Policy.
Ano: 1981
URL: http://purl.umn.edu/42218

Is the Green Revolution Vanishing? Empirical Evidence from TFP Analysis for Rice
Provedor de dados: 31
Autores: Adlas,   J.; Achoth,   Lalith.
A serious concern has been raised recently on the long run sustainability of the productivity effects of Green Revolution technologies in the light of decelerating trend in the yield growth of rice since the mid 1980s under irrigated ecosystem. However, the changes in physical yield are not true measures of productivity from efficiency perspective. Total factor productivity (TFP) is a true measure of economic efficiency of any technology impact. The paper addresses the crucial issue of "is green revolution vanishing" empirically by analyzing TFP for rice in India. Results suggest that various modern technologies (such as modern cultivars) adopted by the farmers over the period have continued to make considerable impact on rice productivity growth-as...
Tipo: Conference Paper or Presentation
Palavras-chave: Technological change; Productivity; Rice; India; Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies; O3.
Ano: 2006
URL: http://purl.umn.edu/25561

IMPACTS OF HISPANIC POPULATION GROWTH ON RURAL WAGES
Provedor de dados: 31
Autores: Newman,   Constance.
Although earnings generally increased in rural areas in the 1990s, Hispanic population growth led to lower wages for at least one segment of the rural population—workers with a high school degree (skilled workers), particularly men in this skill group. Using data from the Bureau of Economic Analysis and the Current Population Survey, this report examines the effects of Hispanic population growth on rural wages. The analysis combines approaches from earlier immigration-impact studies and more recent work that incorporates the role of labor demand in the labor market. The analysis finds that labor demand shift factors and other area-specific factors that often are not included in immigration studies are important. Results indicate that labor demand increases...
Tipo: Report
Palavras-chave: Immigration; Wages; Labor demand; Hispanic population growth; Community/Rural/Urban Development; Labor and Human Capital.
Ano: 2003
URL: http://purl.umn.edu/33965

Climate Change Feedback on Economic Growth: Explorations with a Dynamic General Equilibrium Model
Provedor de dados: 31
Autores: Eboli,   Fabio; Parrado,   Ramiro; Roson,   Roberto.
Human-generated greenhouse gases depend on the level of economic activity. Therefore, most climate change studies are based on models and scenarios of economic growth. Economic growth itself, however, is likely to be affected by climate change impacts. These impacts affect the economy in multiple and complex ways: changes in productivity, resource endowments, production and consumption patterns. We use a new dynamic, multi-regional Computable General Equilibrium (CGE) model of the world economy to answer the following questions: Will climate change impacts significantly affect growth and wealth distribution in the world? Should forecasts of human-induced greenhouse gases emissions be revised, once climate change impacts are taken into account? We found...
Tipo: Working or Discussion Paper
Palavras-chave: Environmental Economics and Policy.
Ano: 2009
URL: http://purl.umn.edu/52339

THE IMPACT OF INCREASED SCHOOL ENROLLMENT ON ECONOMIC GROWTH IN TANZANIA
Provedor de dados: 31
Autores: Seebens,   Holger; Wobst,   Peter.
Failure to accumulate human capital is one of the pressing problems of developing countries. Lacking human capital formation bears consequences on an economy wide level, since education contributes to labor productivity. We examine the impact of increased school enrollment with regard to economic growth and income inequality. A dynamic computable general equilibrium (DCGE) model applying a 2000 SAM for Tanzania is used to evaluate the quantitative long-term effects of increased school attendance on overall economic growth and welfare. In order to get an insight in how a potential skill upgrade would affect the economy, we simulate a government program that aims at increasing primary school enrollment. We find that an increase in human capital formation in...
Tipo: Working or Discussion Paper
Palavras-chave: International Development; Labor and Human Capital.
Ano: 2003
URL: http://purl.umn.edu/18737

REFORMING THE CAP: AN AGENDA FOR REGIONAL GROWTH?
Provedor de dados: 31
Autores: Esposti,   Roberto.
This paper aims at analysing the recent CAP reform from the perspective of the current general and strategic objectives of the EU as defined by the Lisbon Strategy. A critical appraisal of the CAP impact in terms of regional growth is carried out. Firstly from a strictly conceptual and methodological point of view, then by analysing more in detail how CAP reform (of both Pillar I and II) might have actually affected the role of the CAP in promoting (or hindering) regional growth and, therefore, convergence. Empirical evidence provided by the different available methodologies has progressively emerged in the very last years. Though a conclusive answer on the impact of the reform can not be drawn, it still emerges that the role of CAP design and...
Tipo: Conference Paper or Presentation
Palavras-chave: Common Agricultural Policy; Regional Growth and Convergence; Lisbon Strategy; Agricultural and Food Policy; Community/Rural/Urban Development; Q180; R110; O410.
Ano: 2008
URL: http://purl.umn.edu/44868

Globalization, Growth and Distribution: Framing The Questions
Provedor de dados: 31
Autores: Kanbur,   Ravi.
In the last two decades, across a range of countries high growth rates have reduced poverty but have been accompanied by rising inequality. This paper is motivated by this stylized fact, and by the strong distributional concerns that persist among populations and policy makers alike, despite the poverty reduction observed in official statistics where growth has been sufficiently high. This seeming disconnect frames the questions posed in this paper. Why the disconnect, and what to do about it? It is argued that official poverty statistics may be missing key elements of the ground level reality of distributional evolution, of which rising inequality may be an indirect indicator. Heterogeneity of population means that there may be significant numbers of poor...
Tipo: Working or Discussion Paper
Palavras-chave: Food Security and Poverty; International Development; Political Economy.
Ano: 2008
URL: http://purl.umn.edu/51105

Changes in Rural Household Income Patterns in Mozambique, 1996-2002, and Implications for Agriculture’s Contribution to Poverty Reduction.
Provedor de dados: 31
Autores: Boughton,   Duncan; Mather,   David; Tschirley,   David L.; Walker,   Thomas S.; Cunguara,   Benedito; Payongayong,   Ellen M.
Ministry of Agriculture and Rural Development, Directorate of Economics, Republic of Mozambique
Tipo: Working or Discussion Paper
Palavras-chave: Food security; Food policy; Mozambique; Household; Income; Poverty; Food Security and Poverty; Q18.
Ano: 2006
URL: http://purl.umn.edu/56066

China’s growing food imports from the EU
Provedor de dados: 31
Autores: Huan-Niemi,   Ellen; Niemi,   Jyrki S.
This paper examined China’s agricultural imports in regard to income growth, import price changes, and tariff reductions due to China’s trade liberalisation. More specifically, it attempted to model behavioural relationships in the agricultural trade between China and the EU by using annual trade data from 1986 to 2005. Econometric models were constructed for six agricultural products exported from the EU to China – frozen pigmeat, frozen fish, whey, barley, beer, and wine. The results indicated that China’s agricultural imports on a product basis are insensitive to absolute price changes. Therefore, the examination of the price elasticities confirmed the expectation that demand for Chinese agricultural imports is relatively inelastic to absolute price...
Tipo: Conference Paper or Presentation
Palavras-chave: EU; China; Agricultural imports; Income growth; Tariff reductions; Agricultural and Food Policy; Demand and Price Analysis; International Relations/Trade.
Ano: 2009
URL: http://purl.umn.edu/51541

Biofuels, Poverty, and Growth: A Computable General Equilibrium Analysis of Mozambique
Provedor de dados: 31
Autores: Arndt,   Channing; Benfica,   Rui M.S.; Tarp,   Finn; Thurlow,   James; Uaiene,   Rafael N.
This paper assesses the implications of large-scale investments in biofuels for growth and income distribution. We find that biofuels investment enhances growth and poverty reduction despite some displacement of food crops by biofuels. Overall, the biofuel investment trajectory analyzed increases Mozambique’s annual economic growth by 0.6 percentage points and reduces the incidence of poverty by about six percentage points over a 12-year phase-in period. Benefits depend on production technology. An outgrower approach to producing biofuels is more pro-poor, due to the greater use of unskilled labor and accrual of land rents to smallholders, compared with the more capital-intensive plantation approach. Moreover, the benefits of outgrower schemes are enhanced...
Tipo: Working or Discussion Paper
Palavras-chave: Bio-fuels; Growth; Poverty; Mozambique; Africa; Agricultural and Food Policy; International Development; Resource /Energy Economics and Policy.
Ano: 2008
URL: http://purl.umn.edu/52004

What Kind of Agricultural Strategies Lead to Broad-Based Growth: Implications For Country-Led Agricultural Investment Programs
Provedor de dados: 31
Autores: Jayne,   Thomas S.; Boughton,   Duncan.
Without renewed attention to sustained agricultural productivity growth, most small farms in developing countries will become increasingly unviable economic and social units. Sustained agricultural productivity growth and poverty reduction will require progress on a number of fronts, most importantly increased public goods investments to agriculture; a policy environment that supports private investment in input, output, and financial markets and provision of key support services; a more level global trade policy environment; supportive donor programs; and improved governance. Subsidies, if they are focused, appropriately conceived, effectively implemented, and temporary, can play a complementary role but should not – based on both the Asian and African...
Tipo: Report
Palavras-chave: Agricultural strategies; Investment programs; Feed The Future; Africa; Agricultural and Food Policy; Food Security and Poverty.
Ano: 2011
URL: http://purl.umn.edu/107459

Growth, Conventional Production and Tourism Specialisation: Technological Catching-up Versus Terms-of-Trade Effects
Provedor de dados: 31
Autores: Valente,   Simone.
This paper extends the ’expanding-varieties’ growth model in a two-countries-two-goods setup, and describes the dynamics of growth rates and terms of trade when the industry-based economy is the innovation leader, while the tourism-based economy is the follower (i.e. increases the number of intermediate inputs by readapting innovations developed abroad). Two types of transitional dynamics may exist: technological catching-up and technological falling-behind. Contrary to the standard result, technological catching-up by the follower is associated with lower growth rates with respect to the leader, whereas terms-of-trade effects guarantee positive growth differentials for the tourism-based economy when the technological gap with the leader increases over...
Tipo: Working or Discussion Paper
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2005
URL: http://purl.umn.edu/12139

Outlook for Asian Dairy Markets: The Role of Demographics, Income, and Prices
Provedor de dados: 31
Autores: Dong,   Fengxia.
The paper first presents a 10-year outlook for major Asian dairy markets (China, India, Indonesia, Japan, South Korea, Malaysia, the Philippines, Thailand, and Vietnam) based on a world dairy model. Then, using Heien and Wessells's technique, dairy product consumption growth is decomposed into contributions generated by income growth, population growth, price change, and urbanization and these contributions are quantified. Using the world dairy model, the paper also analyzes the impacts of alternative assumptions of higher income levels and technology development in Asia on Asian dairy consumptions and world dairy prices. The outlook projects that Asian dairy consumption will continue to grow strongly in the next decade. The consumption decomposition...
Tipo: Working or Discussion Paper
Palavras-chave: International Relations/Trade; Livestock Production/Industries.
Ano: 2005
URL: http://purl.umn.edu/18563

The Environment and Directed Technical Change
Provedor de dados: 31
Autores: Acemoglu,   Daron; Aghion,   Philippe; Bursztyn,   Leonardo; Hemous,   David.
This paper introduces endogenous and directed technical change in a growth model with environmental constraints. A unique final good is produced by combining inputs from two sectors. One of these sectors uses "dirty" machines and thus creates environmental degradation. Research can be directed to improving the technology of machines in either sector. We characterize dynamic tax policies that achieve sustainable growth or maximize intertemporal welfare. We show that: (i) in the case where the inputs are sufficiently substitutable, sustainable long-run growth can be achieved with temporary taxation of dirty innovation and production; (ii) optimal policy involves both “carbon taxes” and research subsidies, so that excessive use of carbon taxes is avoided;...
Tipo: Working or Discussion Paper
Palavras-chave: Environment; Exhaustible Resources; Directed Technological Change; Innovation; Environmental Economics and Policy; O30; O31; O33; C65.
Ano: 2010
URL: http://purl.umn.edu/92839

Export Growth In India: Has FDI Played a Role?
Provedor de dados: 31
Autores: Sharma,   Kishor.
Export growth in India has been much faster than GDP growth over the past few decades. Several factors appear to have contributed to this phenomenon including foreign direct investment (FDI). However, despite increasing inflows of FDI especially in recent years there has not been any attempt to assess its contribution to India's export performanceone of the channels through which FDI influences growth. Using annual data for 1970-98 we investigate the determinants of export performance in India in a simultaneous equation framework. Results suggest that demand for Indian exports increases when its export prices fall in relation to world prices. Furthermore, the real appreciation of the rupee adversely effects India's exports. Export supply is positively...
Tipo: Working or Discussion Paper
Palavras-chave: Exports; Commercial policy; Export subsidies; Foreign direct investment; Exchange rates and India; F21; International Relations/Trade; F1; F13; F14.
Ano: 2000
URL: http://purl.umn.edu/28372

Smallholder Income and Land Distribution in Africa: Implications for Poverty Reduction Strategies
Provedor de dados: 31
Autores: Jayne,   Thomas S.; Yamano,   Takashi; Weber,   Michael T.; Tschirley,   David L.; Benfica,   Rui M.S.; Neven,   David; Chapoto,   Antony; Zulu,   Ballard.
This paper provides a micro-level foundation for discussions of income and asset allocation within the smallholder sector in Eastern and Southern Africa, and explores the implications of these findings for rural growth and poverty alleviation strategies in the region. Results are drawn from nationally-representative household surveys in five countries between 1990 and 2000: Ethiopia, Kenya, Rwanda, Mozambique, and Zambia. The paper addresses five major points: (1) why geographically-based poverty reduction or targeting strategies-e.g., focusing on marginal areas-is likely to miss a significant share of the poor in any particular country regardless of targeting efficiency in these areas; (2) why current enthusiasm for community-driven development approaches...
Tipo: Report
Palavras-chave: Food Security and Poverty; Land Economics/Use.
Ano: 2001
URL: http://purl.umn.edu/54047

PUBLIC EXPENDITURE, GROWTH, AND POVERTY REDUCTION IN RURAL UGANDA
Provedor de dados: 31
Autores: Fan,   Shenggen; Zhang,   Xiaobo; Rao,   Neetha.
Using district-level data for 1992, 1995, and 1999, the study estimated effects of different types of government expenditure on agricultural growth and rural poverty in Uganda. The results reveal that government spending on agricultural research and extension improved agricultural production substantially. This type of expenditure had the largest measured returns to growth in agricultural production. Agricultural research and extension spending also has the largest assessed impact on poverty reduction. Government spending on rural roads also had substantial marginal impact on rural poverty reduction. The impact of low-grade roads such as feeder roads is larger than that of high-grade roads such as murram and tarmac roads. Education's effects rank after...
Tipo: Working or Discussion Paper
Palavras-chave: Agricultural growth; Monitoring development outcomes; Food Security and Poverty; International Development.
Ano: 2004
URL: http://purl.umn.edu/60317

Is HIV/AIDS Undermining Botswana’s ‘Success Story’? Implications for Development Strategy
Provedor de dados: 31
Autores: Thurlow,   James.
Despite its strong growth record, Botswana faces two prominent development challenges: the onslaught of HIV/AIDS and the slowdown in diamond mining. This study estimates the growth and distributional impact of the HIV/AIDS pandemic and considers its implications for the country’s development prospects, using a dynamic computable general equilibrium and microsimulation model that accounts for the cost of treatment. The results of this analysis indicate that HIV/AIDS reduces GDP growth by 1.6 percent, increases the absolute poverty headcount by 1.5 percentage points and disproportionately hurts labor-intensive manufacturing. Therefore, while mining has dominated the recent slowdown in Botswana’s growth, the present findings suggest that HIV/AIDS is...
Tipo: Working or Discussion Paper
Palavras-chave: Health Economics and Policy.
Ano: 2007
URL: http://purl.umn.edu/42417

The Contribution of Tourism to Economic Growth and Food Security
Provedor de dados: 31
Autores: Richardson,   Robert B.
Many developing countries have managed to increase their participation in the global economy through development of international tourism. Tourism development is increasingly viewed as an important tool in promoting economic growth, alleviating poverty, and advancing food security. This briefing note aims to review the relationship between tourism and poverty reduction, and to explore how investment in tourism development in Mali may contribute to national development goals. Numerous studies have demonstrated that tourism can play a significant role in balanced sustainable development, and that it can be effectively harnessed to generate net benefits for the poor (UNWTO, 2002). Tourism is a principal export for 83% of developing countries, and it is the...
Tipo: Report
Palavras-chave: Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; Food Security and Poverty.
Ano: 2010
URL: http://purl.umn.edu/97140

THEORETICAL ANALYSIS OF FOREIGN AID, POLICIES AND STATE INSTITUTIONS
Provedor de dados: 31
Autores: Xayavong,   Vilaphonh; Gounder,   Rukmani; Obben,   James.
This paper re-examines the theoretical aid-growth nexus by expounding on the issues relating to policies designed for aid delivery and the lack of aid recipient's state institutional capability to enforce policy conditionality. Two propositions have been demonstrated to explain why policy conditionality attached to aid might not always promote sustainable economic growth in Least Developed Countries. First, the model has simulated that a stable aid flow contributes to economic growth even when aid is fungible. Second, the model has also simulated that unstable aid inflow impairs the favourable effect of stable aid inflow. It is suggested that the contribution of aid to economic growth depends not only on the ability of aid to increase investment in the...
Tipo: Working or Discussion Paper
Palavras-chave: Foreign Aid; Economic Growth; Policies; State Institutions; Food Security and Poverty; D72; D9; F35; H30.
Ano: 2005
URL: http://purl.umn.edu/23704

Flexible Trade Policies in Agriculture Sectors of Developing Countries: Proposing a Technical Approach for Sri Lanka
Provedor de dados: 31
Autores: Herath,   Anura.
After two decades of liberalized economic policies together with early accession to WTO, Sri Lanka could not achieve the exp ected fast economic growth. Agriculture growth in particular fell sharply. WTO Doha round expects a deeper liberalization. Instead, we will benefit more from being a friend of the "Development Box" and securing flexibility in tariff revisions. In asserting this, the paper analyzes impacts of liberalized policies on agriculture, stress the need for flexible trade policies and formulate a design for self designating Special Products (SP) and Special Safeguard Mechanisms (SSM). The past economic growth favoured mostly urbanised population. Sluggish rural agricultural growth, hurt with increased food imports, was the main cause of this...
Tipo: Conference Paper or Presentation
Palavras-chave: Sri Lanka; Trade liberalization; Market access; Special products; Special safeguard mechanisms; International Relations/Trade.
Ano: 2006
URL: http://purl.umn.edu/25735

The Political Economy of Downzoning
Provedor de dados: 31
Autores: Adelaja,   Adesoji O.; Gottlieb,   Paul D.
“Substantial downzoning” is defined as the exercise of police power to significantly reduce the legally permitted density on undeveloped land in a community. This contentious practice is typically challenged by those who perceive the action to limit their market opportunities (e.g., farmers and developers), their sympathizers, and others who prefer the status quo. Supporters tend to be those who perceive positive benefits (e.g., environmentalists, conservationists, and homeowners) and those who see it as a supplement to other preservation techniques, based on concerns over such things as growing public costs of land acquisition, limited effectiveness of existing alternatives, or the perceived urgency to act to manage growth.   Given the complexity of the...
Tipo: Journal Article
Palavras-chave: Substantial downzoning; Takings; Land use; Growth management; Open space; Political economy; Institutional and Behavioral Economics; Political Economy.
Ano: 2009
URL: http://purl.umn.edu/55865

China's Economic Performance and Transition in Relation to Globalisation: From Isolation to Centre-Stage?
Provedor de dados: 31
Autores: Tisdell,   Clement A.
This paper considers China’s global economic situation in relation to the general process of globalisation.  After discussing the general process of economic globalisation, it examines political change and transition of the former communist planned economies, especially China’s, and their impact on globalisation.  Then it provides measures of the recent expansion of economic globalisation and China’s involvement in this process.  Positive and negative socioeconomic impacts of globalisation are highlighted.  China’s progress in catching up with more developed economies and the dynamics of its economic growth and future prospects for this growth are examined in a global context.  The question is posed of whether globalisation is likely to result in...
Tipo: Working or Discussion Paper
Palavras-chave: Globalisation; China; Global environmental impacts; Natural resources; China's economic growth.; Environmental Economics and Policy; International Development; Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/90544

The decision to invest and the investment level: An application to Dutch glasshouse horticulture firms
Provedor de dados: 31
Autores: Oskam,   Arie J.; Goncharova,   Natalia V.; Verstegen,   Jos A.A.M.
Investment models typically explain only a small share of the total investment variation within or between firms. A reason for this may be that those models do not explicitly differentiate between the decision to invest and the decision about the level of investment. In this paper, a two-steps theoretical framework and estimation procedure are developed to take into account the different nature of both decisions. ‘Nearly zero’ investments are considered to be small replacement or maintenance investments and treated as ‘zero’ investments. The applied two-step Heckman model shows that the decision to invest is significantly related to available capital (-), wealth (+), debts (-), output prices (+), land price growth (+), capital price growth (-), energy...
Tipo: Conference Paper or Presentation
Palavras-chave: Investments; Glasshouse horticulture; Heckman selection model; Agribusiness; Agricultural Finance; D92; Q12.
Ano: 2009
URL: http://purl.umn.edu/51574

Sectoral Growth in Chile: 1962-82
Provedor de dados: 31
Autores: Coeymans,   Juan Eduardo; Mundlak,   Yair.
To understand the time path of agricultural development, the cause for the variability in sectoral outputs must be examined as part of the general process of economic growth. Such as examination is the focus of this report by Juan Eduardo Coeymans and Yair Mundiak, which appears at a time when there is a great deal of interest in the ability to sustain agricultural as well as general economic growth. This research extends beyond previous studies of agricultural growth at IFPRI by Mudlak and his associates by looking at the economy as consisting of five sectors that vary in their degree of tradablilty as well as in other attributes that caused differential response to the rapidly changing economic conditions in Chile from 1960 on. The study uses an...
Tipo: Report
Palavras-chave: Chile; Economic conditions; Econometric models; Agriculture; Economic aspects; 1918; International Development.
Ano: 1993
URL: http://purl.umn.edu/37964

Economic Globalisation: The Process and its Potential, Social, Economic and Environmental Impacts
Provedor de dados: 31
Autores: Tisdell,   Clement A.
After economic globalisation is defined, the factors that have favoured it in recent times are outlined and the process is placed in a historical context. Measures of the recent expansion in economic globalisation are given, such as trends in the proportion of global GDP traded internationally, and the relative size of global FDI. China’s comparative economic openness compared to the rest of the world is discussed. Potential positive and negative economic and social impacts of globalisation are explored, taking into account important economic theories. Particular attention is given to globalisation and the evolutionary dynamics of economic growth by considering the economic ‘catching up’ phase of countries, such as China, and by placing this in a general...
Tipo: Working or Discussion Paper
Palavras-chave: Globalisation; GDP; FDI; China; Social impacts of globalisation; Economic growth; Environmental Economics and Policy; International Development.
Ano: 2005
URL: http://purl.umn.edu/90539

The grey correlation analysis about the Relationship between the Rural Finance and the Rural Economical Growth of Sichuan Province
Provedor de dados: 31
Autores: Zhang,   Xiao-fang; Qi,   Yan-bin.
This paper analyzes the relationship between rural finance of Sichuan Province and the rural economy from 1999 to 2009 by using the sequential growth rate of the total value of farming, forestry, animal husbandry and fishery and the sequential growth rate of the per capital total income of rural households as the indicators of rural economic development; and taking the volume of deposit, volume of credit, volume of agricultural credit and the credit volume of township enterprises as the indicators of rural financial development; as well as the method of grey correlation analysis. The results show that there is an obvious positive correlation between them, and the development of country finance has the closest connection with the sequential growth rate of...
Tipo: Journal Article
Palavras-chave: Rural finance development; Rural economic growth; Grey correlation analysis; China; Agribusiness.
Ano: 2011
URL: http://purl.umn.edu/108414

Stochastic Production Frontiers and Decomposition of Output Growth: The case of citrus-growing farms in Tunisia
Provedor de dados: 31
Autores: Dhehibi,   Boubaker; Elloumi,   Mohamed.
The aim of this paper is to investigate the relative contribution of technical efficiency, technological change and increased input use to the output growth of the Tunisian citrus growing farms using a stochastic frontier production function approach applied to panel data for the period 2003-2005. Knowledge of the relative contribution of factors productivity and input use to output growth and improvements in technical efficiency is crucial to provide a comprehensive view of the state of the citrus producing sector in the country and help farm managers and policy makers draw appropriate policy measures. The proposed methodology is based on the use of a flexible translog functional form. Results indicate that technical efficiency of production in citrus...
Tipo: Conference Paper or Presentation
Palavras-chave: Citrus sector; Tunisia; Productivity; Technical change; Technical efficiency.; Crop Production/Industries; Productivity Analysis; Q12; O30; O47.
Ano: 2009
URL: http://purl.umn.edu/49953

Creating the Conditions for International Business Expansion: The Impact of Regulation on Economic Growth in Developing Countries - A Cross-Country Analysis
Provedor de dados: 31
Autores: Jalilian,   Hossein; Kirkpatrick,   Colin; Parker,   David.
The role of an effective regulatory regime in promoting economic growth and development and therefore international business has generated considerable interest among researchers and practitioners in recent years. In particular, building effective regulatory structures in developing countries is not simply an issue of the technical design of the most appropriate regulatory instruments, it is also concerned with the quality of supporting regulatory institutions and capacity. Many of the institutions that support markets are publicly provided and the effectiveness of these regulatory institutions can be expected to be an important determinant of how well markets function. This paper explores the role of regulation in affecting economic outcomes using an...
Tipo: Working or Discussion Paper
Palavras-chave: Public Economics.
Ano: 2003
URL: http://purl.umn.edu/30689

The Rapid Rise of China's Dairy Sector: Factors Behind the Growth in Demand and Supply
Provedor de dados: 31
Autores: Fuller,   Frank H.; Huang,   Jikun; Ma,   Hengyun; Rozelle,   Scott.
With the rapid growth in China's dairy industry, a number of recent papers have addressed either the supply or the demand trends for dairy products in China. None, however, presents a systematic explanation for the recent growth in both the supply and demand for dairy products. The goal of this paper is to sketch a more comprehensive picture of China's dairy sector and to assess the nature of the sector's development in the coming decades. Drawing upon several empirical studies, we examine the trends in dairy product consumption to create a composite picture of the factors underlying the recent growth. We also empirically investigate the sources of production gains in milk supply and assess the relative importance of expanding herd size, changes in the...
Tipo: Working or Discussion Paper
Palavras-chave: China; Consumption; Dairy; Milk supply; Stochastic production frontier; Total factor productivity; Livestock Production/Industries.
Ano: 2005
URL: http://purl.umn.edu/18456

Education's Role in Economic Development and in Assisting the Poor
Provedor de dados: 31
Autores: Tisdell,   Clement A.
Much faith has been put in the increased supply of education as a means to promote national economic development and as a way to assist the poor and the disadvantaged. However, the benefits that nations can obtain by increasing the level of education of their workforce depends on the availability of other forms of capital to complement the use of its educated workforce in production. Generally, less developed nations are lacking in complementary capital compared to more developed ones and it is appropriate for less developed countries to spend relatively less on education. The contribution of education to economic growth depends on a nation’s stage of economic development. It is only when a nation becomes relatively developed that education becomes a major...
Tipo: Working Paper
Palavras-chave: Education; Less developed nations; Economic growth; Community/Rural/Urban Development; Labor and Human Capital; Teaching/Communication/Extension/Profession.
Ano: 2005
URL: http://purl.umn.edu/123452

THE GROWTH POTENTIAL FOR THE INDIANA LIVESTOCK INDUSTRIES
Provedor de dados: 31
Autores: Boehlje,   Michael; Gray,   Allan W.; Mark,   Tyler B.
Feed, processing capacity, population density versus animal density, and environmental capacities are the four different dimensions of livestock location and growth potential analyzed for Indiana.  These four dimensions provide livestock producers, government officials, and livestock associations a valuable perspective on the constraints that could limit Indiana's livestock growth potential.  Comparisons among 21 states on these dimensions indicated that Indiana is a second choice of states for livestock growth; Kansas and Iowa are the only first choices.  Indiana's strength in the state comparison is its ability to assimilate the phosphorus produced by livestock and commercial phosphorus.   As environmental regulations continue to tighten and shift from...
Tipo: Working or Discussion Paper
Palavras-chave: Livestock Production/Industries.
Ano: 2006
URL: http://purl.umn.edu/28633

Westernization of the Asian Diet: The Case of Rising Wheat Consumption in Indonesia
Provedor de dados: 31
Autores: Fabiosa,   Jacinto F.
With sustained income growth and fast urbanization, Indonesia will see a major shift in the growth of grain consumption from rice to wheat products. New demand estimates from consumption survey data give a relatively high income elasticity of demand for wheat-based products, in the range of 0.44 to 0.84, with 26% to 34% of this response coming from the impact of income on the probability of consumption for non-consuming households and the remaining impact coming from the response on the level of consumption for households currently consuming wheat products. Urban location of households also contributes an increase of 0.11% to 0.13% to consumption. In contrast, elasticities in rice show a negative impact of income and urbanization on the probability of...
Tipo: Working or Discussion Paper
Palavras-chave: Double-hurdle demand; Trade; Westernization of diet; Food Consumption/Nutrition/Food Safety.
Ano: 2006
URL: http://purl.umn.edu/18335

Global food markets by 2030: What roles for farm TFP growth and trade policies?
Provedor de dados: 31
Autores: Anderson,   Kym; Strutt,   Anna.
Rapid trade-led economic growth in emerging Asia has been shifting the global economic and industrial centres of gravity away from the north Atlantic, raising the importance of Asia in world trade but also altering the commodity composition of trade by Asia and other regions. What began with Japan in the 1950s and Korea and Taiwan from the late 1960s has spread to the much more populous ASEAN region, China and India. This paper examines how that growth and associated structural changes are altering agricultural markets in particular and thereby food security. It does so retrospectively and by projecting a model of the world economy which compares alternative growth strategies, trade policy scenarios and savings behaviors to 2030. Projected impacts on...
Tipo: Presentation
Palavras-chave: Global economy-wide model projections; Asian economic growth and structural change; South-South trade; Booming sector economics; Food security; International Relations/Trade; Marketing; D58; F13; F15; F17; Q17.
Ano: 2012
URL: http://purl.umn.edu/124192

SUSTAINABLE DEVELOPMENT OF RAINFED AGRICULTURE IN INDIA
Provedor de dados: 31
Autores: Kerr,   John M.
India’s agricultural growth has been sufficient to move the country from severe food crises of the 1960s to aggregate food surpluses today. Most of the increase in agricultural output over the years has taken place under irrigated conditions. The opportunities for continued expansion of irrigated area are limited, however, so Indian planners increasingly are looking to rainfed, or unirrigated agriculture to help meet the rising demand for food projected over the next several decades. Rainfed areas are highly diverse, ranging from resource-rich areas with good agricultural potentially are highly productive and already have experienced widespread adoption of improved seeds. In drier, less favorable areas, on the other hand, productivity growth has lagged...
Tipo: Working or Discussion Paper
Palavras-chave: Environmental Economics and Policy; International Development.
Ano: 1996
URL: http://purl.umn.edu/16104

Resource Abundance, Poverty and Development
Provedor de dados: 31
Autores: Bulte,   Erwin H.; Damania,   Richard; Deacon,   Robert T.
The negative correlation between resource endowments and GDP growth remains one of the most robust findings in the empirical growth literature, and has been coined the “resource curse hypothesis”.  The policy consequences of this result are potentially far reaching.  If natural resources are an inescapable curse, this may imply that countries richly endowed with natural resources can only develop by turning their backs on their comparative advantage and diversifying into other non-resource based activities. This paper analyzes whether the negative statistical relationship between natural resource abundance and economic growth spills over to other important economic and social indicators.  The impact of resource wealth on several proxies of economic...
Tipo: Working or Discussion Paper
Palavras-chave: Resource abundance; Economic growth; Developing countries; Cross-country analysis.; Food Security and Poverty; Q2; Q3; O13; O47; O57.
Ano: 2004
URL: http://purl.umn.edu/23803

Agriculture and Economic Growth in Argentina, 1913-84
Provedor de dados: 31
Autores: Mundlak,   Yair; Cavallo,   Domingo; Domenech, Roberto.
In 1982 Dominga Cavallo and Yair Mundlak received an award for quality of research discovery from the American Agriculture Economics Association for IFPRI Research Report 36, Agriculture and Economic Growth in an Open Economy: The Case of Argentina. The research was sponsored jointly by IFPRI and the Instituto de Estudios Economicos Sobre la Realidad Argentina y Latinoamericana (IEERAL) of the Fundacion Mediteranea, and it in turn built on earlier prize-winning research by Mundlak, presented in Research  Report 6, Intersectoral Factor Mobility and Agricultural Growth. The model developed for the study makes it possible to explore the effects of policies directed at agriculture as well as general macro and trade policies, taking into account interaction...
Tipo: Report
Palavras-chave: Agriculture; Economic aspects; History; 20th Century; Economic conditions; Econometric models; International Development.
Ano: 1989
URL: http://purl.umn.edu/42166

DEVELOPMENT AT THE URBAN FRINGE AND BEYOND:  IMPACTS ON AGRICULTURE AND RURAL LAND
Provedor de dados: 31
Autores: Heimlich,   Ralph E.; Anderson,   William D.
Land development in the United States is following two routes: expansion of urban areas and large-lot development (greater than 1 acre per house) in rural areas. Urban expansion claimed more than 1 million acres per year between 1960 and 1990, yet is not seen as a threat to most farming, although it may reduce production of some high-value or specialty crops. The consequences of continued large–lot development may be less sanguine, since it consumes much more land per unit of housing than the typical suburb. Controlling growth and planning for it are the domains of State and local governments. The Federal Government may be able to help them in such areas as building capacity to plan and control growth, providing financial incentives for channeling growth...
Tipo: Report
Palavras-chave: Land development; Sprawl; Large-lot housing; Land zoning; Population growth; Housing; Specialty agriculture; High-value agriculture; Rural amenities; Smart growth; Land Economics/Use.
Ano: 2001
URL: http://purl.umn.edu/33943

GROWTH UNCERTAINTY AND RISKSHARING
Provedor de dados: 31
Autores: Athanasoulis,   Stefano; van Wincoop,   Eric.
How large are potential benefits from global risksharing?  In order to answer this question we propose a new methodology that is closely connected with the empirical growth literature.  We obtain estimates of residual risk (growth uncertainty) at various horizons from regressions of country-specific growth in deviation from world growth on a wide set of variables in the information set.  Since this residual risk can be entirely hedged through risksharing, we use it to obtain a measure of the potential welfare gain for a representative country.  We find that nations can reap very large benefits from engaging in such risksharing arrangements.  Using post-war data, the gain for a 35-year horizon, corresponding to an equivalent permanent increase in...
Tipo: Working or Discussion Paper
Palavras-chave: International Development; Risk and Uncertainty.
Ano: 1997
URL: http://purl.umn.edu/18194

Income and equity effects of crop productivity growth under alternative foreign trade regimes: a CGE analysis for the Philippines
Provedor de dados: 31
Autores: Bautista,   Romeo M.; Robinson,   Sherman.
"September 1996." Includes bibliographical references (p. 17-18). Published, in 1997, in Asian Journal of Agricultural Economics 2(2): 177-194.
Tipo: Working or Discussion Paper
Palavras-chave: Philippines -- Foreign economic relations; Philippines -- Economic conditions; Crop yields; Income -- Philippines; International Relations/Trade; Productivity Analysis.
Ano: 1996
URL: http://purl.umn.edu/97762

Has Economic Growth in Mozambique Been Pro-Poor?
Provedor de dados: 31
Autores: James,   Robert C.; Arndt,   Channing; Simler,   Kenneth R.
Using 1996–97 and 2002–03 nationally representative household surveys, we examine the extent to which growth in Mozambique has been pro-poor. While all sections of society enjoyed a rapid annual increase in consumption between the sample periods, the rate of growth in consumption was slightly higher for richer households. This has led to a moderate increase in inequality at the national level, as demonstrated by the rise in the Gini coefficient from 0.40 to 0.42. However, this slight increase in inequality is not statistically significant, and its impact on poverty reduction efforts is small: the poverty headcount would have been 53.0 percent in 2002–03 if all sections of society had enjoyed the mean growth rate in consumption, compared with the 54.1...
Tipo: Working or Discussion Paper
Palavras-chave: Inequality; Poverty; Growth; Mozambique; Food Security and Poverty; International Development.
Ano: 2005
URL: http://purl.umn.edu/59288

Seedling growth of fifteen Brazilian tropical tree species differing in successional status
Provedor de dados: 88
Autores: Souza,Rogéria P.; Válio,Ivany F.M.
Growth of seedlings of fifteen tropical tree species representative, at the adult stage, of different successional positions, was studied under field conditions. Seedlings were grown in three treatments: full sun (FS), artificial shade imposed by neutral screens (AS) and natural shade imposed by a closed canopy in a Forest Reserve in Southeast Brazil (NS). Most of the studied species survived in both shade treatments, although their growth was severely affected. Decreases in height, internode numbers, dry weight, leaf area, root:shoot ratio (R:S) and increases in leaf mass ratio (LMR), leaf area ratio (LAR) and specific leaf area (SLA) were common responses to shade. Relative growth rates (RGRs) and net assimilation rates (NARs) were consistently lower in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seedling growth; Shade; Shade tolerance; Successional species; Tropical tree species.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042003000100005

Juvenile dynamics of the endemic and rare Enterolobium glaziovii Benth. (Mimosaceae) around reproductive trees in the Atlantic forest, Brazil
Provedor de dados: 88
Autores: Ramos,Flavio N.; Silvia-Matos,Dalva M.; Santos,Flavio A. Maës dos.
Studies on the regeneration and seedling mortality of rare tree species are important, but scarce. The aim of this study was to investigate the annual variation in recruitment, growth and mortality of juveniles of Enterolobium glaziovii Benth., a rare tree species from the Brazilian Atlantic Rain Forest. All seedlings and juveniles around four reproductive trees were labeled and their fate was followed from 1996 to 1999. There were no annual differences in juveniles' recruitment below and beyond the parental crown, but juveniles' survival and growth were lower below than beyond of the parental tree crowns. Small individuals (&lt; 15 cm tall) showed the greatest mortality and the lowest growth, followed by medium (from 15 to 50 cm tall) and large ones (&gt;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conspecific influence; Distance-dependent mortality; Growth; Shade tolerance; Size-dependent mortality.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042005000400011

Germination, initial growth, and biomass allocation in three native Cerrado species
Provedor de dados: 88
Autores: Saboya,Pablo; Borghetti,Fabian.
The parameters of germination, initial growth, and biomass allocation of three native plant species of Cerrado (Copaifera langsdorffii, Dipteryx alata and Kielmeyera coriacea) were established. The species had germination percentages above 88% and average germination times longer than 139 hours. The average time for the opening of the first leaf pair was more than 538 hours for all three species. The average root length of C. langsdorffii and D. alata seedlings after 80 days of growth was around 40cm, four times larger than the average shoot length (&lt;10cm), although the root and shoot biomasses were similar for both species. The average root length (&amp;gt;20cm) of K. coriacea seedlings was four times larger than the average shoot length (&lt;5cm), and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomass partitioning; Copaifera langsdorffii; Dipteryx alata; Kielmeyera coriacea; Seedling growth.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042012000200002

Flooding effects in seedlings of Cytharexyllum myrianthum Cham. and Genipa americana L.: responses of two neotropical lowland tree species
Provedor de dados: 88
Autores: ANDRADE,ANTÔNIO CARLOS SILVA DE; RAMOS,FLAVIO NUNES; SOUZA,ALEXANDRE FADIGAS DE; LOUREIRO,MARTA BRUNO; BASTOS,RODRIGO.
Six-month-old seedlings of Cytharexyllum myrianthum and Genipa americana, two common tree species in different flood-prone areas in Brazil, were flooded for up to 90 days to compare their survival and growth responses under these conditions. Seedlings of both species were found to be relatively tolerant to flooding but growth responses changed according to treatment and plant species. Growth of G. americana was reduced by flooding, showing a decrease in root and leaf dry mass, root/shoot ratio and height, without showing any adaptive morphological changes. On the other hand, growth of C. myrianthum seedlings was stimulated under flooding conditions, showing an increase in root dry mass, root/shoot ratio, height, stem diameter and some morphological changes...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anaerobiosis; Environmental stress; Growth; Hypoxia; Submergence.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041999000500009

Response of Dalbergia miscolobium Benth. seedlings, a cerrado tree species, to mineral nutrient supply
Provedor de dados: 88
Autores: Sassaki,Regina M.; Felippe,G.M.
(Response of Dalbergia miscolobium Benth. seedlings, a cerrado tree species, to a mineral nutrient supply). The soil under the Brazilian cerrado vegetation is very poor in nutrients. The aim of this study was to investigate the effect of the addition of a nutrient solution in the early growth of D. miscolobium, a typical cerrado tree species, cultivated in cerrado soil. Seeds were germinated in Petri dishes and seven-day old seedlings were transfered to pots containing cerrado soil. These were supplied once a week with a normal, 1/2 or 1/10 strength nutrient solution. Four growth analysis were done over a period of 145 days from seed imbibition, in terms of dry mass, leaf area and carbohydrate and nitrogen contents. Other derived parameters were also...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dalbergia miscolobium; Carbohydrate content; Nitrogen content; Early growth; Nutrient solution.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041998000100006

Growth and reproduction of the understory palm Geonoma schottiana Mart. in the gallery forest in Central Brazil
Provedor de dados: 88
Autores: Sampaio,Maurício Bonesso; Scariot,Aldicir.
To understand the growth and reproduction of the palm Geonoma schottiana in the gallery forest of Central Brazil, two hypotheses were raised: (i) production of leaves and reproductive structures are concentrated in the period of the year with high light availability; (ii) leaf production and reproductive activity are related to plant length. However, it is expected that senility effects will cause fast reduction in growth and reproduction activities in higher plants. Growth and reproduction were concentrated in the dry season, when insolation is higher than in the wet season, suggesting that leaf and inflorescence production on G. schottiana in the gallery forest understory is more limited by light than by soil humidity. As the individual grows, leaf...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Life stage; Reproductive and vegetative phenology; Seasonality; Senescence.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042008000300007

In vitro culture at low temperature and ex vitro acclimatization of Vriesea inflata an ornamental bromeliad
Provedor de dados: 88
Autores: Pedroso,Andrea Nunes Vaz; Lazarini,Rosmari Aparecida de Morais; Tamaki,Vívian; Nievola,Catarina Carvalho.
(In vitro culture at low temperature and ex vitro acclimatization of Vriesea inflata an ornamental bromeliad). In vitro culture by seeds is a technique for preservation of threatened species because it may provide a large number of plants with genetic diversity. The bromeliad Vriesea inflata (Wawra) Wawra, an ornamental bromeliad, is extensively and illegally collected from the nature and must be preserved. It is possible to form plant threatened collections in vitro by reducing the temperature of culture, while occupying little space, with the consequent reduction of maintenance costs. This work evaluated the influence of temperature on in vitro growth and morphology of plants of V. inflata, with the aim of establishing a slow growth-rate and analyzing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anatomy; Bromeliaceae; Conservation; Growth; Photosynthetic pigments.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042010000300004

Single-trait bayesian analysis of some growth traits in japanese quail
Provedor de dados: 89
Autores: Karaman,E; Firat,MZ; Narinc,D.
The aim of this study was to estimate the heritability for some growth traits of Japanese quail through the estimation of variance components by Bayesian methodology. For this purpose, 340 progenies of 34 sires were used. Live weight (LW42) and absolute and relative growth rates at 42 days of age (AGR42 and RGR42, respectively) were submitted to single-trait analysis under a sire model. A software (package MCMCglmm) was used for the estimations, and a single chain with 65,000 rounds was run for each trait with a thinning interval of 50. Burn-in was set at 15,000 and inferences were built on posterior samples of 1,000 draws for each trait. All marginal posterior densities were unimodal and marginal posterior distributions of sire variance are slightly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Absolute growth rate; Bayesian; Heritability; Quail; Relative growth rate.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000200007

Comparison of free range broiler chicken strains raised in confined or semi-confined systems
Provedor de dados: 89
Autores: Santos,AL; Sakomura,NK; Freitas,ER; Fortes,CMS; Carrilho,ENVM.
The present study was carried out to compare the growth curve, performance and carcass yield of two broiler strains, Paraíso Pedrês (PP) and ISA Label (ISA), raised in confined or semi-confined systems. It was used a completely randomized design with five replicates, consisting of 20 and 29 birds in semi-confined and confined systems, respectively. Semi-confined birds had free access to pasture at 28 days of age. Performance data were recorded weekly by building growth curves as well as calculating the growth rate. After reaching the recommended body weight (2.5 kg), male birds were slaughtered for physicochemical analysis of carcass, parts and organs. Semi-confined PP and ISA birds showed higher growth potential, higher weight gain, lower feed intake and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth curve; ISA Label; Meat quality; Paraíso Pedrês; Raising system.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000200004

Effects of arbuscular mycorrhizal fungi and phosphorus fertilization on post vitro growth of micropropagated Zingiber officinale roscoe
Provedor de dados: 90
Autores: Santos,Rosilda dos; Girardi,Carla Giovana; Pescador,Rosete; Stürmer,Sidney Luiz.
The rhizomes of Zingiber officinale Roscoe (ginger) are widely used for their medicinal and flavoring properties, whereas the influence of root symbionts on their growth is poorly understood. In this study, the effects of phosphate fertilization and inoculation with a mixture of arbuscular mycorrhizal fungi (AMF) (isolates Glomus clarum RGS101A, Entrophospora colombiana SCT115A and Acaulospora koskei SPL102A) on survival, growth and development of micropropagated ginger were investigated. After transplanting to post vitro conditions, the ginger microplants were subjected to the following treatments: a) AMF mixture, b) P addition (25 mg kg-1), c) AMF + P, and d) non-mycorrhizal control without P addition. After eight months of growth, survival ranged from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acclimatization; Root colonization; Fungal communities.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000300018

Rhizobial Inoculation, Alone or Coinoculated with Azospirillum brasilense, Promotes Growth of Wetland Rice
Provedor de dados: 90
Autores: Hahn,Leandro; Sá,Enilson Luiz Saccol de; Osório Filho,Benjamin Dias; Machado,Rafael Goulart; Damasceno,Raquel Garibaldi; Giongo,Adriana.
ABSTRACT Rhizobia and associative bacteria promote growth in rice plants (Oryza sativa L.) through a series of mechanisms, but most studies on inoculation have been performed based on inoculation with these bacteria in a separate or singular manner. The objective of this study was to assess the efficiency of single/isolated inoculation and inoculation combined with symbiotic rhizobia from forage legume and with Azospirillum brasilense on promoting growth and the root colonization process in wetland rice. Two rhizobia among four isolates from a greenhouse and a laboratory experiment were selected that efficiently promoted seed germination and rice plant growth in a sterilized substrate and in soil. The two most efficient isolates (UFRGS Vp16 and UFRGS...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant growth-promoting rhizobacteria; Oryza sativa; Gfp tagging.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100423

SOIL CHEMICAL PROPERTIES AND GROWTH OF SUNFLOWER (HELIANTHUS ANNUUS L.) AS AFFECTED BY THE APPLICATION OF ORGANIC FERTILIZERS AND INOCULATION WITH ARBUSCULAR MYCORRHIZAL FUNGI
Provedor de dados: 90
Autores: Silva,Apolino José Nogueira da; Silva,Ricardo Alencar da; Santos,Juliana da Silva; Medeiros,Jordan Carlos Silva de; Carvalho,Fabíola Gomes de; Silva,Valéria Nogueira da; Oliveira,Cosme Jales de; Araújo,Afrânio César de; Silva,Luiz Eduardo Souza Fernandes da; Gomes Junior,Júlio.
The use of organic fertilizers and the inoculation of mycorrhizal fungi in the cultivation of oil crops is essential to reduce production costs and minimize negative impacts on natural resources. A field experiment was conducted in an Argissolo Amarelo (Ultisol) with the aim of evaluating the effects of fertilizer application and inoculation of arbuscular mycorrhizal fungi on the growth attributes of sunflower (Helianthus annuus L.) and on soil chemical properties. The experiment was conducted at the Federal University of Rio Grande do Norte, Brazil, using a randomized block design with three replicates in a 4 × 2 factorial arrangement consisting of four treatments in regard to application of organic fertilizer (liquid biofertilizer, cow urine, mineral...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nutrient uptake; Ultisol; Organic fertilizers; Growth attributes.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000100151

Growth, production and yield of common bean under water replacement levels
Provedor de dados: 91
Autores: Magalhães,Ivomberg D.; Lyra,Guilherme B.; Souza,José L. de; Lyra,Gustavo B.; Ferraz,Rener L. de S.; Cavalcante Júnior,Constantino A.
ABSTRACT The bean is a world-class crop and requires adequate water management for higher yield. The objective of this study was to evaluate the growth and the production and to fit multiple regression models to estimate the production components, total biomass accumulation and grain yield of ‘Rosinha’ bean under levels of replacement of evapotranspired water. The experimental design was randomized blocks with four repetitions. Treatments consisted of fractions of crop evapotranspiration (25, 50, 75, 100, 125 and 150% ETc). Growth variables (plant height, number of leaves, leaf area per plant, leaf area index, stem dry mass and leaf dry mass) and production components (number of pods per plant, pod length, pod diameter, pod dry mass, total biomass, pod...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Irrigation; Multivariate.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019001000754

Growth-promoting potential of bacterial biomass in the banana micropropagated plants
Provedor de dados: 91
Autores: Silva,Christiana de F. B. da; Brito,Thaís L. de; Taniguchi,Carlos A. K.; Lopes,Larissa A.; Pinto,Gustavo A. S.; Carvalho,Ana C. P. P. de.
ABSTRACT In the banana production system, a sustainable alternative for producing quality plantlets would be inoculation with plant growth-promoting bacteria (PGPB). Therefore, this study aimed to evaluate the growth-promoting potential of a bacterial biomass in micropropagated banana plantlets cultivar Prata Catarina, and to identify the mechanisms involved in plant-microorganism interactions. In vitro, the biochemical assays tested were the solubilisation of phosphates, production of enzymes, production of ammonia, siderophores, and indole acetic acid. In the in vivo tests, the plants were bacterised (109CFU mL-1) in two phases: acclimatisation, and cultivation in plastic bags. The design was a randomised block with 9 and 7 repetitions per treatment,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacillus spp.; Musa spp.; Plant growth-promoting rhizobacteria.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018001100782

Soybean growth affected by seeding rate and mineral nitrogen
Provedor de dados: 91
Autores: Werner,Flávia; Balbinot Junior,Alvadi A.; Ferreira,André S.; Silva,Marcelo A. de A. e; Debiasi,Henrique; Franchini,Julio C.
ABSTRACT This study aimed to evaluate the effect of seeding rates and nitrogen (N) fertilization on plant growth in soybean cultivar with indeterminate growth habit. Two experiments were conducted in the 2013/14 and 2014/15 growing seasons, in a complete block design with split-plot scheme and six replicates. Four seeding rates (150, 300, 440 and 560 000 viable seeds ha-1) and two N doses (0 and 45 kg ha-1) were allocated in the plots and subplots, respectively. The cultivar NK7059 RR was used. The following traits were assessed: leaf, stem and total shoot dry matter, leaf/stem dry matter ratio, stem and leaf N content, SPAD index, plant height, first pod height, number of branches per plant and grain yield. Soybean growth is not affected by the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max L.; Plant spatial arrangement; Nitrogen fertilization; Grain yield.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000800734

Growth analysis and yield of tomato crop under different irrigation depths
Provedor de dados: 91
Autores: Monte,José A.; Carvalho,Daniel F. de; Medici,Leonardo O.; Silva,Leonardo D. B. da; Pimentel,Carlos.
The influence of irrigation depth was evaluated on tomato crop hybrid Debora plus for salad in a field experiment in split-block design with five treatments (irrigation depth of 40, 60, 80, 100 and 120% of crop evapotranspiration - ETc) and four replications. During the experiment, ten plant samples were collected to determine phytomass and leaf area to estimate plant growth parameters for different depths of irrigation. Results showed maximal growth between 70 and 80 days after transplanting in all treatments. Increase in irrigation depth above 80% of ETc increased crop growth rate (CGR), leaf area index (LAI) and total production of tomato fruits, although same commercial fruit yield was obtained with the lower depths. Therefore, an increase in depth of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum lycopersicon; Growth analysis; Drip irrigation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662013000900003

Growth and physiology of maize under water salinity and nitrogen fertilization in two soils
Provedor de dados: 91
Autores: Braz,Régis dos S.; Lacerda,Claudivan F. de; Assis Júnior,Raimundo N. de; Ferreira,Jorge F. da S.; Oliveira,Adriana C. de; Ribeiro,Aureliano de A.
ABSTRACT The nitrogen fertilization, in general, minimizes the effects of salinity on plants, but the mitigating action depends on plant species, cultivar, soil texture and plant age, among other factors. The objective of this study was to evaluate the effects of irrigation water salinity and nitrogen fertilization on maize physiology and growth (Zea mays) in soils with different textures. The experiment was carried out in a greenhouse in Fortaleza City, CE, Brazil, in PVC soil columns (100 x 20 cm). The design was completely randomized using the factorial 2 x 2 x 4, referring to two soils, an Ultisol and a Quartzipsamment, nitrogen doses of 105 and 210 kg ha-1, under irrigation with saline water of 0.5, 2.0, 4.0 and 6.0 dS m-1, with four repetitions. With...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Leaf gas exchange; Soil texture.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019001200907

Water salinity, nitrogen and phosphorus on photochemical efficiency and growth of west indian cherry
Provedor de dados: 91
Autores: Sá,Francisco V. da S.; Gheyi,Hans R.; Lima,Geovani S. de; Paiva,Emanoela P. de; Moreira,Rômulo C. L.; Silva,Luderlândio de A.
ABSTRACT The objective of this study was to evaluate the interaction between water salinity and doses of nitrogen and phosphorus on chlorophyll a fluorescence and on the growth of West Indian Cherry (‘acerola’) plants in the initial growth stage. The research was carried out in a protected environment, in lysimeters filled with Regolithic Neosol of loamy clay texture and low initial phosphorus content. The experiment was conducted in a randomized block design, arranged in a factorial scheme with two factors, five levels of electrical conductivity of the irrigation water - ECw (0.6, 1.4, 2.2, 3.0 and 3.8 dS m-1) and four proportions of the recommendation of phosphorus/nitrogen - P/N (100:100, 140:100, 100:140 and 140:140% P/N of recommendation), with three...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chlorophyll fluorescence; Saline stress; Fertilization; Malphigia emarginata.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000300158

Rooting of sweet potato seedlings submitted to supplemental calcium and phosphorus nutrition on substrate
Provedor de dados: 91
Autores: Ichikawa,Everton T. M.; Fernandes,Adalton M.; Mota,Lydia Helena da S. de O.
ABSTRACT The objective of this study was to evaluate the rooting and growth of sweet potato seedlings in trays in response to substrate supplementation with calcium (Ca) and phosphorus (P). Two greenhouse experiments were conducted in a randomized block design with a split plot scheme and eight repetitions. In the Ca experiment, the plots were the doses of 0, 100 and 200 mg kg-1 of Ca, and in the P experiment, by the doses of 0, 150 and 300 mg kg-1 of P. In both experiments, the subplots corresponded to the sampling time of seedlings (15, 30, 45, 60 and 75 days after planting). The Ca present in the substrate was sufficient to promote the proper rooting and growth of sweet potato seedlings in the trays. The Ca supply in excess (200 mg kg-1) adversely...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ipomoea batatas; Herbaceous cutting; Clod integrity; Root growing; Permanence time in tray.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019001100860

Promoting fruit seedling growth by encapsulated microorganisms
Provedor de dados: 94
Autores: Santos,Carlos Henrique Barbosa; Martins,Antonio Baldo Geraldo; Rigobelo,Everlon Cid; Teixeira,Gustavo Henrique de Almeida.
Abstract  The use of microorganisms capable of promoting plant growth has been accepted as an alternative to reducing the use of chemical fertilizers. The aim of this study was to evaluate the inoculation of plant growth promoting microorganisms in seedlings of fruit species, verifying the interaction of the inoculums with encapsulating agents such as clay and alginate. Microbial inoculums contained the following species: Azospirillum brasilense, Burkolderia cepacia, Bacillus thuringienses, Bacillus megaterium, Bacillus cereus,Bacillus subtilis, Tricoderma spp. and isolate 411. The fruit species evaluated were: Myrciaria cauliflora (DC.) O. Berg; Myrciaria glazioviana (Kiaersk.) G. Barros &amp;Sobral; Myrciaria dubia (Kunth) Mc Vaugh; Eugenia brasiliensis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fruit plants; Development; Encapsulation; Plant-growth promoting agents.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000301001

Peroxidase activity and initial growth of ‘Barbosa’ peach on clonal rootstocks
Provedor de dados: 94
Autores: Oldoni,Chirlene Márcia; Nienow,Alexandre Augusto; Schons,Jurema; Mayer,Newton Alex.
Abstract  In the peach nursery trees production, the use of rootstocks with unknown genetic identity obtained from peach seeds in the canning industry is frequent. The hypothesis tested was that there are rootstocks that express greater graft compatibility, enabling greater survival and growth, and that peroxidase activity can be used as indication of graft incompatibility. The aim of this study was to evaluate the survival and the peroxidase activity efficiency in identifying graft incompatibility and the trunk diameter growth of ‘Barbosa’ peach grafted onto 18 Prunus clonal rootstocks, propagated by herbaceous cuttings, compared to own-rooted scion trees. The experimental design was three randomized blocks, with one tree per plot. The first three...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prunus persica (L.) Batsch; Graft; Graft compatibility.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000601001

Effect of gibberellic acid and the biostimulant stimulate® on the initial growth of tamarind
Provedor de dados: 94
Autores: Dantas,Ana Cristina Vello Loyola; Queiroz,João Mariano de Oliveira; Vieira,Elvis Lima; Almeida,Vanessa de Oliveira.
Plant growth regulators and biostimulants have been used as an agronomic technique to optimize the production of seedlings in various crops. This study aimed to evaluate the influence of gibberellic acid and the biostimulant Stimulate® on the initial growth of tamarind (Tamarindus indica L.). The experiments were conducted in a nursery with 50% shading, in a randomized block design with five replications and five plants per plot. Thirty eight days after sowing, the leaves were sprayed seven times a day with 0.0 (control), 0.8, 1.6, 2.4 and 3.2 mL of gibberellic acid L-1 aqueous solution and with 0.0 (control), 6.0,12.0, 18.0, and 24.0 mL Stimulate® L-1 aqueous solution. Stem diameter (SD), plant height (PH), longest root length (LRL), shoot dry mass (SDM),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tamarindus indica L.; Plant growth regulators; Seedling production.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452012000100004

Description of blackberry fruit growth by nonlinear regression models
Provedor de dados: 94
Autores: Silva,Édipo Menezes da; Tadeu,Maraísa Hellen; Silva,Victor Ferreira da; Pio,Rafael; Fernandes,Tales Jesus; Muniz,Joel Augusto.
Abstract  Blackberry is a small fruit with several properties beneficial to human health and its cultivation is an alternative for small producers due to its fast and high financial return. Studying the growth of fruits over time is extremely important to understand their development, helping in the most appropriate crop management, avoiding post-harvest losses, which is one of the aggravating factors of blackberry cultivation, being a short shelf life fruit. Thus, growth curves are highlighted in this type of study and modeling through statistical models helps understanding how such growth occurs. Data from this study were obtained from an experiment conducted at the Federal University of Lavras in 2015. The aim of this study was to adjust nonlinear,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Regression analysis; Model Selection; Fit quality; Sigmoid; Small fruits; Fruit development.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452020000200701

Growth and quality of mangosteen seedlings (Garcinia mangostana L.) in response to the application of humic acids
Provedor de dados: 94
Autores: Gomes Júnior,Gedeon Almeida; Pereira,Rafaela Alves; Sodré,George Andrade; Gross,Eduardo.
Abstract  The time of formation of mangosteen seedlings propagated by seeds can be considered as the biggest difficulty in the seedling production system of this species. Considering that the use of humic acids as a growth promoter has been well documented in some species, the objective of this work was to evaluate the growth of mangosteen seedlings in response to the application of humic acid (HA) doses extracted from vermicompost (0; 2; 20; 40; 200 mg C L-1). Growth rate was determined using the following variables: stem diameter, plant height, number of leaves, leaf area, stem dry matter, leaf dry matter, shoot dry matter, root dry matter, total dry matter and Dickson quality index . The dose 150 mg C L-1 was the one that approached the maximum values...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Quality index; Vermicompost; Humate.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000101002

Growth and nutrient accumulation in the aerial part of red Pitaya (Hylocereus sp.)
Provedor de dados: 94
Autores: Lima,Denise de Castro; Mendes,Nouglas Veloso Barbosa; Corrêa,Márcio Cleber de Medeiros; Taniguchi,Carlos Alberto Kenji; Queiroz,Ronialison Fernandes; Natale,William.
Abstract  Knowledge on the amounts of nutrients accumulated by pitaya in its different development stages allows defining the periods in which the essential elements are most required, thus contributing to the elaboration of rational fertilization programs for the crop, reducing production costs. This study aimed to evaluate the growth and nutritional requirement of red pitaya, estimating the accumulation of macro and micronutrients by the plants and determining the periods in which the greatest accumulations occur, as well as the relative growth rate and the relative nutrient absorption rate. Pitaya seedlings were planted in pots containing Argissolo Vermelho-Amarelo Eutrófico (Ultisol) and grown in the open air. The experimental design was randomized...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mineral nutrition; Cactaceae; Nutritional requirement.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000502001

Age, growth and reproductive biology of two endemic demersal bycatch elasmobranchs: Trygonorrhina fasciata and Dentiraja australis (Chondrichthyes: Rhinopristiformes, Rajiformes) from Eastern Australia
Provedor de dados: 103
Autores: Reis,Marcelo; Figueira,Will F.
ABSTRACT Bottom-dwelling elasmobranchs, such as guitarfishes, skates and stingrays are highly susceptible species to bycatch due to the overlap between their distribution and area of fishing operations. Catch data for this group is also often merged in generic categories preventing species-specific assessments. Along the east coast of Australia, the Eastern Fiddler Ray, Trygonorrhina fasciata (Muller &amp; Henle, 1841), and the Sydney Skate, Dentiraja australis (Macleay, 1884), are common components of bycatch yet there is little information about their age, growth and reproductive timing, making impact assessment difficult. In this study the age and growth (from vertebral bands) as well as reproductive parameters of these two species are estimated and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Age and growth; Rajidae; Rhinobatidae; Sexual maturity.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702020000100323

Age and growth of Cetengraulis edentulus (Clupeiformes: Engraulidae) in a subtropical bight of Southern Coast Brazil
Provedor de dados: 103
Autores: Souza-Conceição,José Maria; Schwingel,Paulo Ricardo.
Age and growth of Cetengraulis edentulus (Cuvier, 1828) in the Saco dos Limões bight (Southern Brazil) were studied. Sampling was carried out from August 2001 to July 2003. The study of age and growth was based on the interpretation of the periodicity of ring formation in the otoliths sagittae of 491 individuals, temporal variation of otolith edge, relative marginal increments (RMI), age-length key, and von Bertalanffy curve. Cetengraulis edentulus otoliths were adequate for the interpretation of age with 86% of legibility, in which a translucent zone and its adjacent opaque zone were deposited each year. The translucent zone is formed during the cold period and the opaque zone in the warm period. Fish aged 0 (&lt;12 months) - 4.0 year old were found and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anchovy; Life cycle; Maturity; Otolith.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000300003

Novel single nucleotide polymorphisms in candidate genes for growth in tilapia ( Oreochromis niloticus )
Provedor de dados: 96
Autores: Cuevas-Rodríguez,Breidy Lizeth; Sifuentes-Rincón,Ana María; Ambriz-Morales,Pascuala; García-Ulloa,Manuel; Valdez-González,Francisco Javier; Rodríguez-González,Hervey.
ABSTRACT The objective of the present work was to identify and validate single nucleotide variations located in candidate genes to growth traits in tilapia (Oreochromis niloticus). Two transitions were identified in the promoter region of the growth hormone gene (GH); eight nucleotide changes were identified in introns and promoter region of the IGF-I gene; and a transition (T/C) was identified in the Myogenin gene (MyoG). The highest genotypic frequency (0.8) for GHpA1 and MyoG was found in the GG and TT homozygous individuals, while the highest frequency (0.9) for GHpB1 was observed in the CT heterozygous fish. There was no genotypic frequency in the CC homozygous tilapia for the GHpB1 and MyoG markers. Based on their allelic frequencies, validation as...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Assisted selection markers; Genotypic frequency; Growth hormone gene; Myogenin gene.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016000600345

Growth of Nile tilapia post-larvae from broodstock fed diet with different levels of digestible protein and digestible energy
Provedor de dados: 96
Autores: Sousa,Silia Maria de Negreiros; Freccia,André; Santos,Lilian Dena dos; Meurer,Fábio; Tessaro,Lucélia; Bombardelli,Robie Allan.
This study was carried out to evaluate the influence of different levels of digestible energy and digestible protein in diets of Nile tilapia (Oreochromis niloticus) broodstock on offspring growth during sex reversal stage. A total of 2,700 post-larvae (8.2±0.001 mg) derived from breeders fed nine diets with distinct levels of digestible protein (28, 34 and 40% DP) and digestible energy (2,800; 3,400; and 4,000 kcal DE.kg-1) were stored in twenty-seven 70 L tanks. After 30 days of growth, their average final weight (AFW, g), average weight gain (AWG, g), final standard length (SL, cm), condition factor (CF), specific growth rate (SGR, %/day), stock uniformity (UNI, %), survival (SUR, %) and sex reversal rate (SRR, %) were measured. Although female...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fry; Nutrition; Oreochromis niloticus; Reproduction; Sex reversal.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000800001

Growth and antimicrobial activity of lactic acid bacteria from rumen fluid according to energy or nitrogen source
Provedor de dados: 96
Autores: Carvalho,Isabela Pena Carvalho de; Detmann,Edenio; Mantovani,Hilário Cuquetto; Paulino,Mário Fonseca; Valadares Filho,Sebastião de Campos; Costa,Viviane Aparecida Carli; Gomes,Daiany Iris.
The objective of this study was to evaluate the effects of supplementation with different sources of energy and nitrogenous compounds on the in vitro growth and production of bacteriocin of lactic acid bacteria. Incubations were performed by using ruminal fluid from a rumen-fistulated Holstein-Zebu steer. The animal was kept on a Brachiaria decumbens pasture receiving 200 g/day of supplemental crude protein. Substrates and inoculum were placed in glass flasks considering eight treatments: cellulose, cellulose and casein, cellulose and soy peptone, cellulose and urea, starch, starch and casein, starch and soy peptone and starch and urea. Successive incubations were conducted to select microorganisms according to the energy sources and nitrogenous compounds....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacteriocin; Cellulose; Protein effect; Rumen microbiology.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000600014

Evaluation of mathematical models to describe growth of grazing young bulls
Provedor de dados: 96
Autores: Fernandes,Henrique Jorge; Tedeschi,Luis Orlindo; Paulino,Mário Fonseca; Detmann,Edenio; Paiva,Luisa Melville; Valadares Filho,Sebastião de Campos; Silva,Aline Gomes da; Azevêdo,José Augusto Gomes.
The objective of this study was to evaluate the use of different mathematical models to describe growth of grazing beef cattle. Data of 20 Nellore bulls with initial weight of 129±28.1 kg and final weight of 405±62.0 kg were used. The animals were randomly divided into four plots and placed on B. decumbens Stapf pastures. Three plots received concentrate supplement with different protein profiles and the fourth plot received only mineral supplement. Animals were weighed every 28 days to design growth curve of full body weight. Five mathematical models were evaluated to describe animal growth: Multiphase, Linear, Logarithmic, Gompertz and Logistic models. Assessment of adequacy of the models was performed by using coefficient of determination, simultaneous...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grazing beef cattle; Modeling; Seasonality.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000200020

Effects of Curcuma longa rhizome on growth, skin pigmentation, and stress tolerance after transport of Trichogaster labiosa
Provedor de dados: 96
Autores: Nascimento,Lidiane da Silva; Reis,Sendy Moreira; Ferreira,Pollyanna de Moraes França; Kanashiro,Márcio Yoshiyuki; Salaro,Ana Lúcia; Zuanon,Jener Alexandre Sampaio.
ABSTRACT We aimed to evaluate the effects of Curcuma longa as growth promoter, skin pigmentation enhancer, and stress reducer in diets of Trichogaster labiosa after transport. We used five diets containing 0.0, 1.0, 5.0, 10.0, and 25.0 g kg−1 of turmeric rhizome powder. We observed quadratic effects of turmeric supplementation for feed intake, weight gain, final length, and specific growth rate. The estimated amount of turmeric that decreased these variables ranged from 15.53 to 16.39 g kg−1. Quadratic effects of supplementation of turmeric for cyan and black dorsal skin coloring indices were observed, with estimated values that increased these variables equal to 15.03 and 17.44 g kg−1, respectively. After fish transport, quadratic effects of turmeric were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feed additive; Fish nutrition; Growth promoters; Ornamental fish.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100154

Nonlinear models for fitting growth curves of Nellore cows reared in the Amazon Biome
Provedor de dados: 96
Autores: Marinho,Kedma Nayra da Silva; Freitas,Alfredo Ribeiro de; Falcão,Alencariano José da Silva; Dias,Francisca Elda Ferreira.
Growth curves of Nellore cows were estimated by comparing six nonlinear models: Brody, Logistic, two alternatives by Gompertz, Richards and Von Bertalanffy. The models were fitted to weight-age data, from birth to 750 days of age of 29,221 cows, born between 1976 and 2006 in the Brazilian states of Acre, Amapá, Amazonas, Pará, Rondônia, Roraima and Tocantins. The models were fitted by the Gauss-Newton method. The goodness of fit of the models was evaluated by using mean square error, adjusted coefficient of determination, prediction error and mean absolute error. Biological interpretation of parameters was accomplished by plotting estimated weights versus the observed weight means, instantaneous growth rate, absolute maturity rate, relative instantaneous...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beef cattle; Maturity rate; Modeling.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000900006

Plant community variation across a puna landscape in the Chilean Andes
Provedor de dados: 97
Autores: LAMBRINOS,JOHN G; KLEIER,CATHERINE C; RUNDEL,PHILIP W.
We describe patterns of plant species and growth form abundance in the puna vegetation of Parque Nacional Lauca, Chile. At more than 4,300 m, the extreme habitat of the study site supported relatively few species. These few species, however, represented a diverse array of growth forms that were organized with respect to distinct environmental gradients. Both species richness and growth form diversity increased with the degree of habitat rockiness and on more xeric north and east facing slopes. These xeric, rocky sites supported the greatest overall abundance of cushion forms. Less rocky sites with more soil development supported a greater abundance of tussock grass and shrub forms. Congeneric species occupied distinct microhabitats and were often markedly...
Tipo: Journal article
Palavras-chave: Cushion plants; Growth form; High Andean vegetation.
Ano: 2006
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2006000200009

Branch whorls of juvenile Araucaria araucana (Molina) Koch: are they formed annually?
Provedor de dados: 97
Autores: LUSK,CHRISTOPHER H.; LE-QUESNE,CARLOS.
The growth of Araucaria araucana, like that of many other conifers, is characterised by the production of a monopodial stem with branch whorls. However, the periodicity of whorl formation in this species has not been subjected to systematic study. We used growth ring counts to determine the frequency of whorl formation in sun- and shade-grown juvenile A. araucana in a montane forest in the Chilean coast range. Whorls were not annual in any of the 35 individuals studied, growth rings outnumbering whorls by a factor of 1.8 to 3.9. The mean interval between successive whorls was significantly shorter in sun-grown (2.1 yrs whorl -1) than in shade-grown trees (2.6 yrs whorl-1), suggesting a relationship with plant carbon balance. Mean distance between whorls...
Tipo: Journal article
Palavras-chave: Araucariaceae; Conifers; Dendroecology; Tree growth; Tree rings.
Ano: 2000
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000300013

Growth and volatiles in the micropropagation of Santa Maria herb
Provedor de dados: 124
Autores: Carvalho,Alexandre Alves de; Bertolucci,Suzan Kelly Vilela; Silva,Sâmia Torres; Pinto,José Eduardo Brasil Pereira.
ABSTRACT The aims of this study were to establish micropropagation for Chenopodium ambrosioides L. and analysis of volatile constituents in vitro as a function of different salt concentrations of MS medium and sucrose. The apical buds were established on MS medium added with 3% sucrose. The vegetative growth of nodal segments was tested in different salt concentrations of MS basic medium (0.25, 0.50, 1.00, 1.50, and 2.00) and of sucrose (5, 10, 20, 30, and 40 g L-1). Nodal and apical segments were tested in vertical and horizontal orientations. Different volumes of culture medium (20; 35, 50, 65, and 80 mL) were examined in the growth of nodal segments. Plants were acclimatized in three different substrates. The apical segments collected from matrices...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chenopodium ambrosioides L.; Medicinal plant; Tissue culture.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000400624

Growth curves and nutritional requirements for maintenance of asymptotic weight of Nellore cattle
Provedor de dados: 124
Autores: Arruda,Rosana Moreira da Silva de; Souza,Júlio César de; Jardim,Rodrigo José Delgado; Ferraz Filho,Paulo Bahiense; Silva,Luiz Otávio Campos.
ABSTRACT The objective of this study was to evaluate the growth curve of Nellore cattle raised in the Pantanal, Mato Grosso do Sul, in different groups of size (weight), sex, and birth season, as well as to estimate the nutritional requirements for maintenance of the asymptotic weigh. The nonlinear models were adjusted using the Gauss-Newton method, with information on weight and age of animals within each (total, upper, and middle) group. The asymptotic weight was influenced by sex (P&lt;0.05) in all groups. Regarding maturity rates, females in the total herd and upper group were more precocious than males, whereas males and females in the middle group were similar. Animals born in the dry season of the year showed a greater asymptotic weight in the total...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Birth station; Total digestible nutrients; Maturity rate.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000400692

Multivariate approach of inter-relationships among growth, consumption and carcass traits in Nellore cattle
Provedor de dados: 124
Autores: Magnabosco,Cláudio Ulhôa; Lopes,Fernando Brito; Miyagi,Eliane Sayuri; Lôbo,Raysildo Barbosa; Sainz,Roberto Daniel.
The objective of the present study was to analyze the phenotypic inter-relationships between growth, feed intake and carcass traits in polled Nellore cattle, as well as to determine which bulls produced the most efficient progeny. The experiment was conducted in the feedlot of the Guaporé Pecuária (Livestock) Company, OB Brand. The following traits were analyzed: initial live weight (ILW); final live weight (FLW); average daily gain (ADG); dry matter intake (DMI); gain:feed (G:F); residual feed intake (RFI); rib-eye area (REA); rump fat thickness (RF); backfat thickness at the 12th-13th rib (BF); weighted fat score (WF); and intramuscular fat percentage (IMF). Both univariate and multivariate analyses were performed to analyze the inter-relationships...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cluster; Residual feed intake; Multivariate statistic; Weight gain; Zebu.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000100020

Growth, gas exchange and yield of peanut in frequency of irrigation
Provedor de dados: 124
Autores: Sousa,Geocleber Gomes de; Azevedo,Benito Moreira de; Fernandes,Carlos Newdmar Vieira; Viana,Thales Vinicius de Araújo; Silva,Maria Lilian Santos.
This study was conducted to evaluate the effect of different irrigation frequencies on growth, gas exchange and yield of the peanut (Arachis ypogea L). The experiment was conducted in the field using the experimental design of randomized blocks with five treatments, five replications with four plants per plot. The treatments were composed: F2 = (irrigation every 2 days), F4 = (irrigation every 4 days), F6 = (irrigation every 6 days), F8 = (irrigation every 2 days) and F10 = (irrigation every 10 days). At 60 days after sowing (DAS), the gas exchange variables (photosynthesis, stomatal conductance and transpiration) and growth variables (plant height, leaf number, stem diameter and shoot dry matter) were evaluated. The highest irrigation frequency tested...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arachis ypogea L.; Growth; Agricultural Irrigation.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000100004

Growth pattern of friable calluses from leaves of Capsicum annuum var. annuum cv. Iberaba Jalapeño
Provedor de dados: 124
Autores: Santos,Mauricio Reginaldo Alves dos; Souza,Carolina Augusto de; Paz,Eloísa Santana.
ABSTRACT The genus Capsicum belongs to the Solanaceae botanical family and is notable for the production of secondary metabolites of medicinal and economical importance. In vitro methods have been successfully utilized for the large scale production of plant secondary metabolites. The objective of this study was to establish a protocol for callus induction from leaves, nodal and internodal segments of the cultivar C. annuum var. annuum cv. Iberaba Jalapeño, and to determine the growth pattern of the calluses, aiming at the identification of the deceleration phase, when the callus cells must be subcultured for the establishment of cell suspensions and the production of secondary metabolites. The explants were inoculated into a medium supplemented with BA...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Callogenesis; Growth curve; Secondary metabolites.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000300523

Defoliation intensity and performance of soybean plants with different growth habits
Provedor de dados: 22
Autores: Monteiro, Manoela Andrade; Koch, Felipe; Nobre, Felipe Luiz de Lemos; Zulli, Felipe Santos; Araújo, Bruno Oliveira Novais; Borges, Eduardo Golçalves; Pedó, Tiago; Aumonde, Tiago Zanatta; dos Santos, Esmael Lopes.
The objective of this work was to evaluate the influence of the level of artificial defoliation, applied in stages V6 and R2, on the quality and yield components of soybean seeds. The experiment was conducted in a greenhouse in the municipality of Cascavel, Paraná State, Brazil. The experimental design was a randomized block with four replications, in a 5 x 2 x 2 factorial scheme (five levels of defoliation x two cultivars, two phenological stages (V6: fifth fully developed trifoliolate leaf and R2: full flowering), two growth habits). The analyzed variables were mass of 100 seeds, number of pods per plant, seed number per plant, seed number per pod, germination, dry matter of seedlings and length of shoot and roots of seedlings. Defoliation above 50%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Determined and indeterminate growth; Artificial defoliation; Phonological stage; Glycine max (L.) Merrill.
Ano: 2017
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/14185

Cell envelope components of Yersinia pestis grown in intraperitoneal diffusion chambers
Provedor de dados: 59
Autores: Ferreira,Rita C. C.; Neto,Armando A. B.; Fracalanzza,Sérgio E. L.; Costa,Sérgio O. P.; Almeida,D. F.; Ferreira,Luís C. S.
The electrophoretic profiles of penicillin binding proteins (PBPs) and outer membrane proteins (OMPs) of Yersinia pestis EV 76 were determined following in vivo growth in diffusion chambers implanted in the peritoneal cavity of mice. In contrast to Y. pestis grown under in vitro conditions which activate the low calcium response (LCR) regulon there was no significant qualitative or quantitative change of the PBP profile of Y. pestis cells during growth in diffusion chambers for up to 72 h following implantation in mice. Three OMPs, with molecular weight of 100, 60 and 58 kDa, were expressed in Y. pestis cells grown for 24 h, but not at 48 h or at 72 h, in diffusion chambers. These results indicate that growth of Y. pestis in intraperitoneal diffusion...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Yersinia pestis; PBP; In vivo growth; OMP.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141998000300005

Quantitative evaluation of acidity tolerance of root nodule bacteria
Provedor de dados: 59
Autores: Oliveira,Luiz Antonio de; Magalhães,Hélio Paracaima de.
Quantification of acidity tolerance in the laboratory may be the first step in rhizobial strain selection for the Amazon region. The present method evaluated rhizobia in Petri dishes with YMA medium at pH 6.5 (control) and 4.5, using scores of 1.0 (sensitive, "no visible" growth) to 4.0 (tolerant, maximum growth). Growth evaluations were done at 6, 9, 12, 15 and 18 day periods. This method permits preliminary selection of root nodule bacteria from Amazonian soils with statistical precision. Among the 31 rhizobia strains initially tested, the INPA strains 048, 078, and 671 presented scores of 4.0 at both pHs after 9 days of growth. Strain analyses using a less rigorous criterion (growth scores higher than 3.0) included in this highly tolerant group the INPA...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rhizobia; Tolerance to pH; Amazon.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141999000300004

Growth of bare root Pinus taeda, L. seedlings cultivated under five densities in nursery
Provedor de dados: 63
Autores: Carneiro,José Geraldo de Araújo; Barroso,Deborah Guerra; Soares,Luis Maurício da Silva.
Seedlings compete for nutrients, water and light. The available area for each seedling affects their behavior related to requirements for these resources. This experiment evaluated the influence of five plant densities on the growth of bare root Pinus taeda, L. seedlings in a nursery after outplanting. The analyzed characteristics were: height (H), root collar diameter (D), H/D ratio, and dry matter weight. Higher densities stimulated H growth and the lowest densities increased D average and dry matter weight and lowered the H/D ratio. Seedlings were distributed by H, D and H/D classes. Higher densities had a larger number of seedlings in larger H classes. Larger numbers of seedlings with larger D and lower H/D ratios were found in lower densities. Ten...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spacing; Erosion; Seedling quality; Morphological characteristics; Root growth.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000100004

Surface application of lime ameliorates subsoil acidity and improves root growth and yield of wheat in an acid soil under no-till system
Provedor de dados: 63
Autores: Caires,Eduardo Fávero; Corrêa,José Cristovão Leal; Churka,Susana; Barth,Gabriel; Garbuio,Fernando José.
Crop root growth and grain yield can be affected by chemical modifications in the soil profile due to surface lime application. A field trial was carried out on a loamy dystrophic Typic Hapludox at Ponta Grossa, State of Paraná, Brazil, to evaluate root growth and grain yield of wheat (Triticum aestivum L. cv. CD 104, moderately susceptible to Al), about 10 years after surface liming (0, 2, 4, and 6 Mg ha-1) and three years after surface re-liming (0 and 3 Mg ha-1), in a long-term no-till cultivation system. Soil acidity limited wheat root growth and yield severely, probably as a result of extended water deficits during the vegetative stage. Surface liming caused increases up to 66% in the root growth (0-60 cm) and up to 140% in the grain yield. Root...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum L.; Dolomitic lime; Aluminum; Calcium.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000500013

Growth and yield of papaya under irrigation
Provedor de dados: 63
Autores: Almeida,Frederico Terra de; Bernardo,Salassier; Sousa,Elias Fernandes de; Marin,Sérgio Lúcio David; Grippa,Sidney.
Thermal units or degree day systems can both be used to quantify relationships between plants and air temperature. The Northern Fluminense region holds no tradition for irrigated papaya (Carica papaya L.) cropping and, because of the need for irrigation, it is important knowing its growth and development characteristics under these conditions. This study aimed to determine the relationship between growth rate of papaya plants and degree days, and its effect on crop productivity, under different irrigation levels. An experiment was set up with the cultivar "Improved Sunrise Soil 72/12", in a randomized blocks design, with seven irrigation water depths and three repetitions; crop growth and yield parameters were evaluated. There were significant correlations...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Irrigation management; Development; Papaya; Productivity.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000300001

Brachiaria decumbens supresses the initial growth of Coffea arabica
Provedor de dados: 63
Autores: Dias,Guilherme Faus da Silva; Alves,Pedro Luís da Costa Aguiar; Dias,Tomás Carneiro de Souza.
Brachiaria decumbens is becoming one the most common weeds growing in young coffee orchards because, besides its fast growth and difficulty of control, new coffee orchards are usually established in pasture areas. In order to verify the effect of B. decumbens plant density on the early growth of coffee (Coffea arabica L. cv. Catuaí Amarelo), a competition experiment was conducted under semi-controlled humidity conditions. Soil collected in a Typic Haplustox was placed in 70 L asbestos cement boxes and one coffee seedling was planted in each box. The B. decumbens seedlings were transplanted to the boxes at the 2-4 leaf stage. Treatments consisted of 0, 4, 8, 12, 16, 20, 24, 36, 48, and 60 weeds m-2. The experimental period started 120 days after...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Weed; Coffee; Competition; Growth suppression.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000600003

Salicylic acid ameliorates the adverse effect of salt stress on strawberry
Provedor de dados: 63
Autores: Karlidag,Huseyin; Yildirim,Ertan; Turan,Metin.
Strawberry is considered as a salinity sensitive species and is adversely affected in response to the salt stress in terms of growth and yield. Pot experiments were conducted to determine the effect of exogenous salicylic acid (SA) application on physiology, growth, chlorophyll and mineral content of strawberry grown under salt stress and greenhouse conditions. Strawberry plants were treated with SA at different concentrations (0.0, 0.25, 0.50 and 1.00 mM). Salinity treatments were established by adding 0 and 35 mM of NaCl to a base complete nutrient solution. Salt stress negatively affected the growth, chlorophyll content and mineral uptake of strawberry plants. However, plants treated with SA often had greater shoot fresh weight, shoot dry weight, root...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salinity; Growth; Mineral content.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000200006

Characterization of streptomycetes with potential to promote plant growth and biocontrol
Provedor de dados: 63
Autores: Sousa,Carla da Silva; Soares,Ana Cristina Fermino; Garrido,Marlon da Silva.
Studies with streptomycetes in biocontrol programs and plant growth promotion are presented as technological alternatives for environmental sustainable production. This work has the objective of characterizing six isolates of streptomycetes aiming the production of extracellular enzymes, indole acetic acid, capacity for phosphate solubilization, root colonization and growth under different pH and salinity levels. For detection of enzyme activity the isolates were grown in culture media with the enzyme substrates as sole carbon source. The root colonization assay was performed on tomato seedlings grown on 0.6% water-agar medium. Growth under different pH and salinity levels was evaluated in AGS medium with 1%, 1.5%, 2%, 2.5%, and 3% NaCl, and pH levels...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Actinomycetes; Indole acetic acid; Extracellular enzymes; Siderophores.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000100007

Humic substances isolated from residues of sugar cane industry as root growth promoter
Provedor de dados: 63
Autores: Busato,Jader Galba; Zandonadi,Daniel Basílio; Dobbss,Leonardo Barros; Façanha,Arnoldo Rocha; Canellas,Luciano Pasqualoto.
Plant growth promoting substances are widely used in modern agriculture. Several products in the market are humic substances isolated from different sources. The filter cake, a residue of sugar production, is a rich and renewable source of organic matter and these characteristics place the filter cake as a possible source of plant growth promoting substances. Humic acids (HA) from filter cake were characterized, and their effects as root growth promoters were evaluated. Chemical features of the HA were evaluated through elemental composition, acidic functional groups, E4/E6 ratio and infrared spectroscopy analyzes. The biological activity of the HA was assessed using root architecture parameters and the P-type H+-ATPase activity. The lateral root...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: H+-ATPase; Brazil; Industrial residues; Physiological effects; Bioactivity.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000200012

Evaluation of plant growth-promoting and bioprotecting rhizobacteria on wheat crop
Provedor de dados: 102
Autores: LUZ,WILMAR C. da.
Experiments were carried out under laboratory, growth chamber, and field conditions to evaluate the effect of Plant growth-promoting and bioprotecting rhizobacteria (PGPBR) seed treatment on seed pathogens, seed germination, plant growth, and grain yield of wheat (Triticum aestivum). Most of the PGPBR strongly reduced the recovery of the pathogens from infected wheat seeds. All treatments, except the chemical iprodione + thiram, significantly promoted plant growth over the nontreated control. Psudomonas putida biotype A (11) and P. agglomerans (14) showed the greatest effects. Field experiments, carried out at two locations, indicated that all treatments, except P. chlororaphis (42), significantly increased seedling emergence of wheat . In Pato Branco, PR,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Wheat; Triticum aestivum.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582001000300003

GRAAL: Growth, Architecture, ALlocation: a functional-structural model to analyse the interactions between growth and assimilates allocation integrating processes from organ to whole plant
Provedor de dados: 26
Autores: Drouet, J.L.; Pagès, L.
An integrated functional-structural model, called GRAAL, has been developed to simulate and analyse the interactions between morphogenetic processes and assimilate partitioning during the vegetative development of individual plants. GRAAL associates models of plant morphogenesis and models simulating the growth of plant compartments as related to assimilate availability. Using objectoriented methods, knowledge is formalized at the organ level (i.e., local rules of development and functioning). The behaviour of the plant arises from interactions between the organs and the integration of the processes within the whole plant. Shoot and root organs are initiated as a function of temperature. Using the source–sink concept, organ growth is calculated from its...
Tipo: Conference proceedings
Ano: 2007
URL: http://library.wur.nl/ojs/index.php/frontis/article/view/1380

Comparative analysis of the relative growth of Uca rapax (Smith) (Crustacea, Ocypodidae) from two mangroves in São Paulo, Brazil
Provedor de dados: 104
Autores: Castiglioni,Daniela da Silva; Negreiros-Fransozo,Maria Lucia.
A study on the relative growth of two populations of Uca rapax (Smith, 1870) was performed primarily to determine the size at onset sexual maturity. The species was sampled monthly in Itamambuca (23º24'43"S and 45º00'73"W) and Ubatumirim (23º20'17.8"S and 44º53'2.2"W) mangroves. Carapace width (CW) and length (CL), abdomen width (AW), major cheliped propodus length (PL) and height (PH) for each sex, and gonopod length (GL) for males were measured with a calliper (0.01 mm). Allometric analyses were used to estimate size at maturity. The relationships that most precisely indicated the size at onset of sexual maturity were AW vs. CW, for females and PL vs. CW, for males. Males and females are mature, respectively at 15.2 and 12.1 mm CW in samples from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometric growth; Morphologic maturity.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752004000100023

Crescimento em viveiro de cultivo do camarão canela (Macrobrachium Amazonicum) (Decapoda, Palaemonidae)
Provedor de dados: 104
Autores: Coelho,Petrônio Alves; Ramos-'Porto,Marilena; Barreto,Aline do Vale; Costa,Vandete Elias da.
Prawn growth in intensive culture ponds depends upon the cultured species and internal (nutrition state) and external (pond condition) factors. To obtain growth taxa in aquaculture for the "canela" prawn (Macrobrachium amazonicum), experiments were carried out at Amapá and Pernambuco, Brazil. The initial prawn population of Amapá ponds carne from different places of the Amazon river, while those from Pernambuco from hatcheries of the Departamento de Oceanografia da Universidade Federal de Pernambuco. Physico-chemical and biological analyses of the water were made at the same time. The growth rate was estimated through collections of samples of about 10% of the initial population, with measures of the orbital length of each individual. Ponds' harvests were...
Tipo: Info:eu-repo/semantics/article
Ano: 1982
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751982000100007

Efeito da densidade populacional sobre as curvas de crescimento de Macrobrachium rosenbergii (De Man) em cultivo semi-intensivo (Crustacea, Palaemonidae)
Provedor de dados: 104
Autores: Valenti,Wagner Cotroni; Mello,Jeanette de Toledo Cardoso de; Castagnolli,Newton.
In this article the length growth curves of Macrobrachium rosenbergii (De Man, 1879) held in different population densities were analysed. Postlarvae prawns were stocked into five 0,02 ha earthen ponds at densities of 4, 8, 12, 16 and 20 ind./m² during six months. Forthnightly, the mean total length of animals from each pond were obtained by means of random samples. For each population the length growth curves and the instantaneous growth rate expressions were determined. The growth rate and the asymptotic maximum length decreased with the stocking density raised. This effect is greater when the density ranges in low levels. The growth decrease can be due to intraspecific competition for life resources and to negative interactions between individuals, as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crustacea; Palaemonidae; Macrobrachium rosenbergii; Ecology.
Ano: 1993
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751993000300009

Crescimento relativo do camarão canela Macrobrachium amazonicum (Heller) (Crustacea, Decapoda, Palaemonidae) em viveiros
Provedor de dados: 104
Autores: Moraes-Riodades,Patrícia M.C.; Valenti,Wagner C.
Some morphometric relationships in Macrobrachium amazonicum (Heller, 1862) reared in earthen ponds were studied. A total of 239 individuals were collected, sexed and sorted to juvenile or adult. Total length (Lt), post-orbital length (Lpo), carapace length (Lcp) and queliped length (Lql) were measured. The relationships Lt/Lpo, Lpo/Lcp and Lt/Lcp are the same for juveniles, males and females, indicating unchanged growth pattern during post-larval ontogenetic development. While Lt/Lpo showed isometric growth, Lpo/Lcp and Lt/Lcp showed negative allometry. On the other hand, for the Lql/Lcp relationship, juveniles showed isometric growth, females slight positive allometry and males a strong positive allometry. It suggests that the importance of chelipeds may...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crustacea; Macrobrachium amazonicum; Freshwater prawn; Relative growth; Amazon river prawn.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000400023

In vitro germination and growth of Vriesea incurvata Gaudich. (Bromeliaceae)
Provedor de dados: 109
Autores: Pulido-Rueda,Edwin Ernesto; Milaneze-Gutierre,Maria Auxiliadora; Negrelle,Raquel.
Abstract Vriesea incurvata in the natural environment shows some difficulties associated to the low seed germination capacity. Aiming to provide basis for the seedlings production, the results of the seeds germination percentage and the initial growth of V. incurvata seedlings in vitro conditions in different culture media, are reported. Completely randomized design was comprised of eight treatments and eight replications. The treatments were as culture media: MS (Murashige &amp; Skoog); MS%; KC (Knudson); KC%; MS + activated carbon (AC); MSV2 + AC; KC + AC; and KCV2 + AC. The germination percentage was calculated from the division between the number of seeds with primary root extrusion by the total number of sowed seeds. The initial growth was evaluated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bromeliaceae; Culture media; In vitro propagation; Native plant; Seed germination.
Ano: 2018
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000100140

Tambaqui growth and survival when exposed to different photoperiods
Provedor de dados: 36
Autores: Aride,Paulo Henrique Rocha; Roubach,Rodrigo; Nozawa,Sérgio Ricardo; Val,Adalberto Luís.
The use of different photoperiods (light) were investigated during tambaqui (Colossoma macropomum) juvenile growth under captivity. Light intensity tested was: continuous dark (24hrs without light), natural photoperiod simulation (10hrs of light and 14hrs without light) and continuous light (24 with light). No mortality was recorded among treatments. Significant differences was observed after 50 days of experiment among mean fish weight, fish kept under a continuous darkness showed a better specific growth rate (6.02%) when compared to control fish (natural photo period, 3.67%). Fish exposed to continuous light presented the lowest mean specific growth rate (2.04%). It is possible to improve tambaqui juvenile weight gain performance when kept under...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colossoma macropomum; Juvenile fish; Photoperiod; Growth.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672006000300015

Food deprivation does not affect growth performance of juvenile tambacu
Provedor de dados: 36
Autores: PAZ,Arlan de Lima; PASTRANA,Yugo Moraes; BRANDÃO,Lian Valente.
ABSTRACT The objective of this study was to evaluate the efficiency of food deprivation on the growth performance of the commercially important hybrid fish tambacu (Piaractus mesopotamicus male × Colossoma macropomum female). For this, 171 juveniles of average length 8 cm and 11.4 g body mass were distributed in nine tanks, and allocated to three treatments: the fish were fed every day (control), fed for six days followed by one day of food deprivation (6F/1D) and fed for five days followed by two days of food deprivation (5F/2D). After 77 days, all animals achieved similar growth rates. Only animals submitted to two days of food deprivation presented hyperphagia. There was a reduction in total feed consumption of 3.8% and 10.8% for the 6F/1D and 5F/2D...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Fish farming; Feeding strategy; Compensatory growth.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672018000300207

Diversity of bacterial strains in biochar-enhanced Amazon soil and their potential for growth promotion and biological disease control in tomato
Provedor de dados: 36
Autores: CANIATO,Matheus Miranda; CATARINO,Aricléia de Moraes; SOUSA,Thiago Fernandes; SILVA,Gilvan Ferreira da; BICHARA,Karina Pryscilla de Araújo; CRUZ,Jeferson Chagas da; ASSIS,Luiz Alberto Guimarães de; HANADA,Rogério Eiji.
ABSTRACT The use of bacteria in growth promotion and biological control of plant diseases can minimize environmental contamination caused by the indiscriminate use of pesticides and chemical fertilizers. We aimed to evaluate growth promotion and biological control of Corynespora cassiicola in tomato seedlings mediated by beneficial bacteria isolated from a non-rhizospheric Amazon soil containing different amounts of biochar, and to identify to which groups of bacteria the strains belong. We obtained 200 strains of bacteria from experimental plots containing biochar doses of 0, 40, 80 and 120 t ha-1. Of these, 53 strains were selected by root colonization tests. Based on growth promotion parameters, 25 strains were screened, identified by molecular...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beneficial bacteria; Corynespora cassiicola; Solanum lycopersicum; Target spot.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000400278

BIOCHEMICAL AND PHYSIOLOGICAL CHARACTERIZATION OF OIL PALM INTERSPECIFIC HYBRIDS (Elaeis oleifera x Elaeis guineensis) GROWN IN HYDROPONICS
Provedor de dados: 37
Autores: RIVERA MÉNDEZ,YURANY DAYANNA; MORENO CHACÓN,ANDRÉS LEONARDO; ROMERO,HERNÁN MAURICIO.
The interspecific hybrid, Elaeis oleifera x Elaeis guineensis (OxG) is an alternative for improving the competitiveness and sustainability of the Latin American oil palm agro-industry, because of its partial resistance to some lethal diseases and also because of the high quality of its oil. A comparative characterization was conducted of the physiological and biochemical performance of seedlings of six OxG hybrids grown in hydroponics. Gas exchange, vegetative growth, protein, sugar and photosynthetic pigment content, and antioxidant system activity were determined. With the exception of gas exchange, the other variables showed significant differences between materials. The ´U1273´ and ´U1737´ materials showed greater vegetative growth with no expression...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adaptation; Growth; Nutrient solution; Plant breeding; Stress.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000300005

LINKAGE MAPPING OF CANDIDATE GENES FOR INDUCE RESISTANCE AND GROWTH PROMOTION BY Trichoderma koningiopsis (Th003) IN TOMATO Solanum lycopersicum
Provedor de dados: 37
Autores: SIMBAQUEBA,JAIME; COTES,ALBA MARINA; BARRERO,LUZ STELLA.
Induced systemic resistance (ISR) is a mechanism by which plants enhance defenses against any stress condition. ISR and growth promotion are enhanced when tomato (Solanum lycopersicum) is inoculated with several strains of Trichoderma ssp. This study aims to genetically map tomato candidate genes involved in ISR and growth promotion induced by the Colombian native isolate Trichoderma koningiopsis Th003. Forty-nine candidate genes previously identified on tomato plants treated with Th003 and T. hamatum T382 strains were evaluated for polymorphisms and 16 of them were integrated on the highly saturated genetic linkage map named “TOMATO EXPEN 2000”. The location of six unigenes was similar to the location of resistance gene analogs (RGAs), defense related...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trichoderma koningiopsis; Solanum lycopersicum; Induced systemic resistance growth promotion; Candidate genes; Genetic linkage map.
Ano: 2011
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2011000200004

Elevated atmospheric CO2 concentration improves water use efficiency and growth of a widespread Cerrado tree species even under soil water deficit
Provedor de dados: 39
Autores: Souza,João Paulo; Melo,Nayara Magry Jesus; Halfeld,Alessandro Dias; Vieira,Kamilla I. C.; Rosa,Bruno Luan.
ABSTRACT Changes in atmospheric CO2 levels are accompanied by ecological interactions involving other environmental factors, such as drought, which can severely alter the water balance of plants, thereby influencing sap flow, gas exchange, and plant growth. The objective of this study was to evaluate the water use economy, leaf gas exchange, and growth of young plants of the species Lafoensia pacari subjected to high concentrations of atmospheric CO2 ([CO2]) and soil water deficit. Increased vapor pressure deficit was observed from 1200 to 1800 hours. Plants under elevated [CO2] exhibited increased leaf photosynthesis, resulting in improved growth. Specific leaf area was lower in plants under high [CO2], mainly after soil water deficit treatment. Daily...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomass allocation; Leaf gas exchange; Sap flow; Specific leaf area; Water economy.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000300425

Phenology, caudex growth and age estimation of Cyathea corcovadensis (Raddi) Domin (Cyatheaceae) in a subtropical forest in southern Brazil
Provedor de dados: 39
Autores: Neumann,Micheline Krüger; Schneider,Paulo Henrique; Schmitt,Jairo Lizandro.
Cyathea corcovadensis (Raddi) Domin occurs in northeastern, southeastern and southern Brazil, being widely distributed in the last. This was a three-year study, conducted from August 2008 to July 2011, in which we evaluated C. corcovadensis in a subtropical forest in southern Brazil. For the first year (August 2008 to July 2009), we monitored 30 plants on a monthly basis in order to analyze phenological events (vegetative and reproductive) and caudex growth. We also estimated the ages of the plants. Except in June and July of 2009, monthly leaf emergence and senescence were continuous and irregular, which prevented total leaf abscission, during that first year. Leaf emergence, senescence and fertility correlated with photoperiod, temperature and plant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth rates; Monitoring; Tree fern; Climatic variables.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000200014

Variation in plant-animal interactions along an elevational gradient of moist forest in a semiarid area of Brazil
Provedor de dados: 39
Autores: Diogo,Ivan Jeferson Sampaio; Martins,Fernando Roberto; Verola,Christiano Franco; Costa,Itayguara Ribeiro da.
Pollination and dispersal are critical ecological processes that directly affect the reproductive success of plants and are important for understanding the structure of plant communities. We compiled data on pollination and dispersal syndromes of 406 plant species distributed among different elevations in Área de Proteção Ambiental da Serra de Baturité (APASB) in northeastern Brazil. We aim to determine how the dispersal and pollination of the flora in the mountainous rainforest of APASB are affected by climate, relief and growth form. We hypothesized that plant community is comprised of different ecological groups based on biotic and abiotic syndromes. Melittophily was the most common (57%) pollination syndrome followed by non-specialized and ornithophily...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Altitude; Humidity; Melittophily; Plant community; Topology; Water availability; Zoochory.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000100027

In vitro morphogenesis and cell suspension culture establishment in Piper solmsianum C. DC. (Piperaceae)
Provedor de dados: 39
Autores: Balbuena,Tiago Santana; Santa-Catarina,Claudete; Silveira,Vanildo; Kato,Massuo Jorge; Floh,Eny Iochevet Segal.
Piper solmsianum is a shrub from Southeast Brazil in which many biologically active compounds were identified. The aim of this work was to establish a cell suspension culture system for this species. With this in mind, petiole and leaf explants obtained from in vitro plantlets were cultured in the presence of different plant growth regulator combinations (IAA, NAA, 2,4-D and BA). Root and indirect shoot adventitious formation, detected by histological analysis, was observed. Besides the different combinations of plant growth regulators, light regime and the supplement of activated charcoal (1.5 mg.l-1) were tested for callus induction and growth. Cultures maintained in light, on a 0.2 mg.l-1 2,4-D and 2 mg.l-1 BA supplemented medium, and in the absence of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Callogenesis; Cell suspension culture; Morphogenesis; Pariparoba; Plant growth regulators.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062009000100029

Allelopathic effects of Sonchus oleraceus L. on the germination and seedling growth of crop and weed species
Provedor de dados: 39
Autores: Gomaa,Nasr Hassan; Hassan,Mahmoud Omar; Fahmy,Gamal Mohammad; González,Luís; Hammouda,Ola; Atteya,Atteya Mostafa.
We assessed the allelopathic effects of the aqueous extract of Sonchus oleraceus dry shoots on the germination and seedling growth of Trifolium alexandrinum, three weed species (Brassica nigra, Chenopodium murale and Melilotus indicus) and S. oleraceus itself. We assayed four different concentrations of the aqueous extract (w v-1): 1%, 2%, 3% and 4%. To determine whether the effects of the extract were attributable to the presence of allelopathic compounds, its osmotic potential or both, we prepared concentrations of polyethylene glycol (PEG) with osmotic potentials equivalent to those of the aqueous extract. All concentrations of the plant extract completely inhibited the germination and seedling growth of C. murale. The lowest concentration of the plant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelochemicals; Aqueous extract; Bioherbicide; Phytotoxicity.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000300014

Deleterious effect of TRIS buffer on growth rates and pigment content of Gracilaria birdiae Plastino &amp;amp; E.C. Oliveira (Gracilariales, Rhodophyta)
Provedor de dados: 39
Autores: Ursi,Suzana; Guimarães,Melina; Plastino,Estela Maria.
This work evaluated the effects of Tris (hydroxymethyl)-aminomethane (TRIS) buffer and its interaction with nutrient concentration on the development of Gracilaria birdie, a common species on the Brazilian coast that has been exploited for agar production. Responses to different conditions were assessed through growth rates and pigment content (chlorophyll a, phycoerythrin, phycocyanin and allophycocyanin). Provasoli's nutrient solution with and without TRIS addition was tested at concentrations of 12.5, 25 and 50%. The pH was also monitored. G. birdiae grew better in the absence of TRIS and at low nutrient concentrations, 12.5 and 25% (growth rates of 10.8-11.3%.day-1). Higher contents of phycoerythrin and chlorophyll a were observed without TRIS at 12.5...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Culture medium; TRIS (hydroxymethyl)-aminomethane; Gracilaria birdiae; Growth; Pigments.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062008000300024

Mortality and diameter growth of lianas in a semideciduous forest fragment in Southeastern Brazil
Provedor de dados: 39
Autores: Lombardi,Julio Antonio; Temponi,Lívia Godinho; Leite,Claudia Aparecida.
This is a 30-month study of mortality rates and diameter growth rates of lianas in a semideciduous forest fragment in Belo Horizonte, Minas Gerais State, Brazil. Results are presented for 484 specimens of lianas, of which 103 experienced individual mortality (21.3% of the sampled population). Mortality varied according to class of stem diameter, but did not vary throughout the months of year, or between seasons or years. Mortality rates were higher than those recorded in other studies, perhaps due to the age of this secondary forest. Stem diameter growth rates were measured for 385 lianas, the survivors after 30 months plus four plants that died just before the final census, and averaged 1.2mm/year, ranging from 0mm/year (Chioccoca alba) to 4.8mm/year...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lianas; Mortality; Diameter growth; Minas Gerais State; Secondary forest.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33061999000200005

Evidence of the effects of fire on branching and leaf development in cerrado trees
Provedor de dados: 39
Autores: Souza,João Paulo; Albino,Ana Lúcia S.; Prado,Carlos Henrique B. A.
ABSTRACT We discuss evidence of effects of an accidental fire on shoot growth and leaf development in six cerrado tree species with distinct leaf phenologies. Buds of all six species were marked before shoot and leaf emergence in the dry season. After fire, leaf and shoot growth were monitored weekly and specific leaf area (SLA) was determined. Shoot order was determined in the growing season. Evergreens and semideciduous woody species had rapid leaf and shoot growth and decreased leaf life span (LLS) after fire compared with published data for evergreens in cerrado areas without fire. On the other hand, Kielmeyera variabilis, a deciduous species, showed intense branching and produced two orders of shoots in one growing season. Fires promote rapid leaf and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Disturbance; Leaf life span; Shoot growth; Specific leaf area; Shoot order.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400677

Fungicide and insecticide residues in rice grains
Provedor de dados: 1
Autores: Teló, Gustavo Mack; Marchesan, Enio; Zanella, Renato; Peixoto, Sandra Cadore; Prestes, Osmar Damian; Oliveira, Maurício Limberger.
The objective of this study was to analyse residues of fungicides and insecticides in rice grains that were subjected to different forms of processing. Field work was conducted during three crop seasons, and fungicides and insecticides were applied at different crop growth stages on the aerial portion of the rice plants. Azoxystrobin, difenoconazole, propiconazole, tebuconazole, and trifloxystrobin fungicides were sprayed only once at the R2 growth stage or twice at the R2 and R4 growth stages; cypermethrin, lambda-cyhalothrin, permethrin, and thiamethoxam insecticides were sprayed at the R2 growth stage; and permethrin was sprayed at 5-day intervals from the R4 growth stage up to one day prior to harvest. Pesticide residues were analysed in uncooked,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.01.03.01.-6 Oryza sativa L.; Food; Gas chromatography; Pesticides; Grains quality Manejo e Tratos Culturais.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/30594

Growth and development of yacon in different periods of planting and growing regions
Provedor de dados: 1
Autores: Silva, Diego Mathias Natal da; Oliveira, Fábio Luiz de; Cavatte, Paulo Cezar; Quaresma, Mateus Augusto Lima; Christo, Bruno Fardim.
The increasing interest in the commercial exploitation of yacon has demanded adequate technological knowledge for the implantation and management of the crop, including planting periods and cultivation regions that contribute to the satisfactory growth and development of the species. This study was conducted in two different locations, one in a mountainous region and another in a lowland region. In each location, yacon was planted in four different seasons, fall (April), winter (July), spring (September) and summer (December). We collected primary dry matter accumulation data for different parts of the plant and the leaf area at 30 day intervals. We used these values to calculate the following morphophysiological indexes: specific leaf area, leaf area...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Smallanthus sonchifolius; Growth analysis; Production.; Fisiologia de Plantas Cultivadas.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/39442

Growth and development of yacon in different periods of planting and growing regions
Provedor de dados: 1
Autores: Silva, Diego Mathias Natal da; Oliveira, Fábio Luiz de; Cavatte, Paulo Cezar; Quaresma, Mateus Augusto Lima; Christo, Bruno Fardim.
The increasing interest in the commercial exploitation of yacon has demanded adequate technological knowledge for the implantation and management of the crop, including planting periods and cultivation regions that contribute to the satisfactory growth and development of the species. This study was conducted in two different locations, one in a mountainous region and another in a lowland region. In each location, yacon was planted in four different seasons, fall (April), winter (July), spring (September) and summer (December). We collected primary dry matter accumulation data for different parts of the plant and the leaf area at 30 day intervals. We used these values to calculate the following morphophysiological indexes: specific leaf area, leaf area...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.01.03.06-7 Smallanthus sonchifolius; Growth analysis; Production. Fisiologia de Plantas Cultivadas.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/39442

Phytotoxic potential of Drimys brasiliensis Miers for use in weed control
Provedor de dados: 1
Autores: Anese, Simoni; Gualtieri, Sonia Cristina Juliano; Grisi, Patrícia Umeda; Jatobá, Luciana de Jesus; Arduin, Marcos.
This study aims to evaluate the phytotoxicity potential of leaf and root extracts of Drimys brasiliensis on the germination and seedling growth of Panicum maximum and Euphorbia heterophylla and its influence on metaxylem cell size in the seedling roots of the latter specie. The leaf and root extracts were fractionated by partition chromatography, and the hexane and ethyl acetate fractions obtained from each organ were evaluated at different concentrations for phytotoxic activity in several bioassays. In seedling growth tests, we compared the effects of these fractions with the herbicide oxyfluorfen. The hexane fraction of the root extracts showed a higher inhibitory potential on the germination and growth of weeds and reduced the average size of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agronomia - Fisiologia vegetal allelopathy; Inhibition; Germination; Early growth. Controle de plantas daninhas.
Ano: 2015
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/19476

Growth rhythm of Vochysia divergens Pohl (Vochysiaceae) in the Northern Pantanal
Provedor de dados: 3
Autores: Machado, Nadja Gomes; Sanches, Luciana; Aquino, Aryadne Márcia; Silva, Ludymilla Barboza da; Novais, Jonathan Willian Zangeski; Biudes, Marcelo Sacardi.
The Pantanal is the largest wetland in the world, characterized by high biodiversity, but large areas have been invaded by Vochysia divergens, a flood-adapted pioneer and native tree of the riparian forest and Brazilian Savanna. Seasonality in rainfall causes annual rhythms in the tree’s physiology, in which climatic stress factors induce a cambial dormancy in trees and, in consequence, growth zones in the trunk. Current analysis evaluates the seasonal variation of the diameter increase of V. divergens specimens in a seasonal floodable forest of the Northern Brazilian Pantanal. Field sampling was conducted between January and December 2012. Air temperature, relative humidity and precipitation were measured at a micrometeorological station, water level was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciências Biológicas; Ecologia diametric increment; Dendrometric bands; Climate-growth relation; Phenology; Cambará Botânica.
Ano: 2015
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/24330

Assessing efficacy of jojoba crushed seed and oil cake on growth vigor, nutritional status of Superior grapevine cuttings and controlling the root-knot nematode
Provedor de dados: 111
Autores: Hafez, Omaima M.
The increasing demand for environmental protection and sustainable food production requires increasing towards the use of natural and non-toxic materials for agriculture. Thus, the target of the current research was assessing the efficacy of jojoba crushed seed, oil cake (seed after compressing) and bio-nematicide (Nema-Foo®) on growth and nutritional status of Superior grapevine cuttings as well as controlling Meloidogyne incognita in the Pomology greenhouse at NRC, Dokki, Giza, under Egyptian conditions during two successive seasons (2015-2016). Eleven treatments were done on Superior grapevine cuttings (one year old) as jojoba crushed seed and jojoba oil cake (3 and 6 g, for each) with or without infection, Nema-Foo® (5 %) with infection were added, in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: National Research Centre Superior grapevine cutting; Vegetative growth; Nutritional status; Controlling root-knot nematode.
Ano: 2018
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4407

Establishment of Oil Palm Seedlings Using Treated Oil Palm Decanter Cake (OPDC) as Bio-Organic Media
Provedor de dados: 111
Autores: Hashim, Mohammad Muaz.
Oil Palm Decanter Cake (OPDC) from palm oil milling is a potential hazard for environment due to its elevated organic content. Direct use of OPDC for planting medium could also give negative effect to plant growth, despite its high potential due to its substantial nutrient content. This study was conducted to examine the potential of hot water-treated OPDC as bioorganic media and its effects on growth performance of oil palm seedlings. OPDC was treated with hot water to remove oil content and chemical analysis was determined on N, P, K, Ca and Mg. For bio-organic media, the treated OPDC was mixed with MPOB F1 fertilizer and soil at 25%, 50% and 75% to plant oil palm seedlings. The results showed that after hot water treatment, residual oil was reduced from...
Tipo: Info:eu-repo/semantics/article
Ano: 2021
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6329

Effect of different pruning intensities on the growth of Acacia nilotica (Kikar)
Provedor de dados: 115
Autores: Siddiqui,Tahir; Fattakh Nawaz,Muhammad; Ahmed,Irfan.
In many species, natural pruning is never a satisfactory option if production of clear wood is a management objective. Acacia nilotica is well adapted specie to the arid and semiarid climate of Pakistan and plays an important role in rural economy of the country. Traditional pruning is carried out to maximize the amount of clear-wood production but the effect of this practice on tree growth, still unknown. So a preliminary pruning trial was conducted at two different sites, UAF and PARS, in Faisalabad- Pakistan. All pruning treatments resulted in reduction in diameter growth. However, significant reduction in diameter growth was observed when crown removal was more than 40 %. A taper study was done by taking diameter measurements at different heights. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acacia nilotica; Diameter growth; Stem taper; Pakistan.
Ano: 2010
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952010000100009

Development of the banana plants 'Prata Anã' and 'FHIA-01' under the effect of paclobutrazol applied on the soil
Provedor de dados: 42
Autores: Maia,Emanuel; Siqueira,Dalmo L.; Salomão,luiz C.C.; Peternelli,Luiz A.; Ventrella,Marília C.; Cavatte,Rithiely P.Q.
Under some cultivation conditions, excessive growth of the pseudostem of banana plants can be considered a limiting factor, and thus, the use of growth regulators can constitute a valid alternative. This work aimed to evaluate the action of paclobutrazol on the growth of the pseudostem of banana plants and other characteristics of their development. An experiment was installed with five paclobutrazol doses (0; 0.5; 1.0; 1.5; and 2.0 g of a.i. plant-1) combined with two banana plant cultivars ('Prata Anã' and 'FHIA-01'). Paclobutrazol did not affect the number of days from planting to flowering, total leaf area and leaf emission rate. However, it increased leaf permanence on the plants and sucker number, reduced the foliar area of the leaves emitted after...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Foliar area; Growth analysis; Growth regulator; Musa spp.; Suckers.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000200011

Physio-anatomic aspects on the initial growth of Guazuma ulmifolia Lam. seedlings (Sterculiaceae)
Provedor de dados: 42
Autores: Scalon,Silvana P. Q; Pereira,Heloisa H. G; Glaeser,Daniele F; Silva,Jocemar J; Betoni,Roseli; Mussury,Rosilda M.
This paper aimed to evaluate the initial growth of "mutambo" seedlings in different conditions of light intensity and treatments with gibberellic acid (GA). The seedlings were kept under full sun and 50% of shading. Sixty days after the emergence, seedlings were sprayed with: 1) 100 mg L-1 GA3; 2) 200 mg L-1 GA3; 3) control. At the end of the appraisals, seedlings height under 50% of shading was compared to the height that were growing under full sun with 200 mg L-1 GA. Stem diameter was lower under shading. Leaf area did not vary among the treatments, but the root system growth was higher under full sun and did not vary among GA levels. The number of stomata, trichomes and epidermal cells on adaxial and abaxial sides was higher under full sun. Total dry...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ecophysiology; Gibberellin; Mutambo.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000200027

Comparison of acid and enzymatic hydrolysis of pectin, as inexpensive source to cell growth of Cupriavidus necator
Provedor de dados: 42
Autores: LOCATELLI,GABRIEL OLIVO; FINKLER,LEANDRO; FINKLER,CHRISTINE L.L.
﻿﻿﻿Abstract: The present work investigated what the appropriate methods of hydrolysis of pectin for reducing compounds (RCs) production, employed as a substrate for cell growth of Cupriavidus necator. This microorganism has great importance industrial, because besides potential single cell protein (SCP), is the most studied microorganism for production of polyhydroxybutyrate (PHB), and both processes require high cell concentration with inexpensive substrates For this, it was compared to acid and enzymatic hydrolysis procedures, through rotational central composite experimental design, using pectin concentration (1.0%). It was analyzed as a variable response for both experimental design, the RCs’ production. The best conditions of each procedure were used...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cupriavidus necator; Galacturonic acid; Pectin depolymerization; Pectin hydrolysates; Polygalacturonase.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000300605

Growth and biochemical variables in Amazon catfish ( Pseudoplatystoma reticulatum ♀ x Leiarius marmoratus ♂) under different water pH
Provedor de dados: 42
Autores: LEMOS,CARLOS HENRIQUE P.; CHUNG,SAMANTHA; RIBEIRO,CLÁUDIO V.M.; COPATTI,CARLOS EDUARDO.
Abstract Although fish may live in different aquatic environments, variations in the water quality parameters, mainly pH, may have a substantial impact in their development and welfare. The objective of this study was to test the effect of different pH levels on the growth performance and biochemical variables in Amazon catfish juveniles (Pseudoplatystoma reticulatum x Leiarius marmoratus). Fish were subjected to four different water pH levels (4.56, 6.0, 7.24, and 8.90) for 40 days. The total ammonia and alkalinity were higher and lower, respectively, in the treatments with water pHs 4.56 and 6.00 than at the other water pH levels. The un-ionized ammonia was higher at water pH 8.90 than at the other water pH levels. Amazon catfish exposed to water pH 4.56...
Tipo: Info:eu-repo/semantics/article
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703573

Morpho-physiological changes in Billbergia zebrina due to the use of silicates in vitro
Provedor de dados: 42
Autores: MARTINS,ADALVAN D.; MARTINS,JOÃO PAULO R.; BATISTA,LUCAS A.; DIAS,GABRIELEN M.G.; ALMEIDA,MIRIELLE O.; PASQUAL,MOACIR; SANTOS,HELOÍSA O. DOS.
Abstract The use of silicon in Billbergia zebrina cultivation in vitro is an alternative for optimizing micropropagation of this important ornamental plant species. The objective of the present study was to evaluate the growth and anatomical and physiological alterations in Billbergia zebrina (Herbert) Lindley plants as a function of different sources and concentrations of silicon during in vitro cultivation and acclimatization. The experimental design was completely randomized, with a double factorial arrangement and an additional control treatment (2 x 3 + 1). The first factor was relative to calcium silicate and sodium silicate added to the Murashige &amp; Skoog culture medium; the second factor was related to its concentrations, 0.5, 1.0, and 2.0 mg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bromeliad; Micropropagation; Plant anatomy; Plant physiology; Silicon.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703449

Growth of the Anchovy Anchoa tricolor in a brazilian subtropical estuary
Provedor de dados: 42
Autores: CARVALHO,BARBARA M. DE; FONTOURA,NELSON F.; SPACH,HENRY L.
ABSTRACT This study aimed to describe the growth parameters of Anchoa tricolor in a subtropical estuary. From August 2010 to July 2011, 10.009 specimens of the anchovy Anchoa tricolor, mean total length 4.2 cm (±1.45), were captured in the intertidal region of the Estuarine Complex of Paranaguá (25º 15’ - 25° 35’ S and 48° 20’ - 48° 45’ W). Species´s weight/length relationship for grouped genders was described as follow:   W = 0.0000591.Lt3.282 (length in centimeters; weight in grams) showing a positive allometric growth pattern (b&gt;3; P=0.000). Significant differences concerning weight/length relationship for males, females and unsexed individuals were identified. Parameters of the length to age growth curve were estimated by adjusting a von Bertalanffy...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bertalanffy; Engraulidae; Longevity; Weight/length relationship.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000502097

Probiotic, antibiotic and combinations in Nile tilapia juveniles culture
Provedor de dados: 42
Autores: FERREIRA,ANDRE L.; AMORIM,MATHEUS P.S.; SOUZA,EMILENE R.; SCHORER,MARIANNE; CASTRO,GUSTAVO H.F.; PEDREIRA,MARCELO M.
Abstract: This study aimed to evaluate the effect of the commercial probiotic (Saccharomyces cerevisiae), antibiotic (florfenicol), and its combination for Nile tilapia culture. The experiment was arranged in a completely randomized design with five replications, and five treatments diets: Control: water and diet without additives; YD: yeast in the diet (1 g Kg-1); AW: antibiotic in the water (0.002 g L-1); AWYD: antibiotic in the water, and yeast in the diet (0.002 g L-1 and 1 g Kg-1); and AD: antibiotic in the diet (0.01 g kg-1). The growth parameters as total and standard length, weight, weight gain, biomass, Fulton’s condition factor, specific growth rate and plasma cortisol of tilapia did not show the difference between the treatments. The survival...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal welfare; Florfenicol; Yeast; Prebiotic and probiotic; Growth promoter.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000700856

Is the secondary thickening in palms always diffuse?
Provedor de dados: 42
Autores: BOTÂNICO,MARLI P.; ANGYALOSSY,VERONICA.
Unlike other arboreal monocotyledons, the secondary growth of palms has for the past 100 years been described as diffuse. Solely cell enlargement and random parenchyma divisions, without the activity of a meristem, characterize such growth. Some previous works of the early 20th century have, however, mentioned the presence of a secondary meristem in the stems of palms, but this information was forgotten since then. Addressing to this question, we analysed palm stems of four species, with the aim to understand the possible presence of such secondary growth. We found that a meristematic band occurs between the cortex and the central cylinder and gives rise to new vascular bundles and parenchyma internally, producing parenchyma and fibres externally. It...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aerial stem; Meristematic band; Palms; Secondary growth; Stem anatomy; Subterranean stem.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401461

37 years of scientific activity in a Biochemistry Department in Brazil: patterns of growth and factors leading to increased productivity
Provedor de dados: 42
Autores: Gomes,Urubatã E.; Oliveira,Diogo L. de; Berti,Luciana C.; Amaral,Olavo; Souza,Diogo O.; Wofchuk,Susana T.
Scientific activity in Brazil has experienced an accelerated growth in the past decades, with an increase in productivity that greatly surpasses the international average. This growth has occurred mostly at the expense of centers of excellence in public universities, which account for the vast majority of the country's scientific output. The aim of this study was to evaluate the production of the Department of Biochemistry of a large public university in southern Brazil (Universidade Federal do Rio Grande do Sul), as well as to identify internal and external policies that have influenced this growing production profile. We have performed a historical analysis of the scientific output of this Department of Biochemistry, which accounts for a considerable...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Scientific productivity; Scientific growth profile; Biochemistry; UFRGS.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000300030

Boron foliar application, branch girdling and plant growth regulators on yield and fruit quality of ‘Garber’ pear trees
Provedor de dados: 42
Autores: GIACOBBO,CLEVISON L.; PICOLOTTO,LUCIANO; PASA,MATEUS S.; FACHINELLO,JOSÉ CARLOS.
ABSTRACT The aim of this study was to evaluate the influence of boron foliar application, branch girdling and plant growth regulators on the performance of pear trees cv. Garber. The experiment was arranged in a randomized block design with three replications. Treatments consisted of different boron rates (220, 440, 660 and 880 mL 100 L-1), branch girdling, and the plant growth regulators Promalin® (benzyladenine + gibberellins AG4+7) (560 mL 100 L-1) and Biozyme * TF (200 mL 100 L-1). The percentage of fruit set, stem length, fruit length, fruit diameter, flesh firmness, soluble solids and yield were assessed. The greatest fruit set was observed with Promalin® in both years and also boron and Biozyme * TF in the second year. The use of Promalin® increased...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pyrus sp; Fruiting; Plant growth regulator; Promalin®; Nutrition.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000401815

Plant growth, nutrients and potentially toxic elements in leaves of yerba mate clones in response to phosphorus in acid soils
Provedor de dados: 42
Autores: BARBOSA,JULIERME Z.; MOTTA,ANTONIO C. V.; CONSALTER,RANGEL; POGGERE,GIOVANA C.; SANTIN,DELMAR; WENDLING,IVAR.
ABSTRACT Native to subtropical region of South America, yerba mate is responsive to P under some conditions, but the degree of influence of genetic and soil on the growth and composition of the leaf is unknown. The aim of study was to evaluate plant growth, nutrients and potentially toxic elements in leaves of yerba mate clones in response to P application in acid soils. In greenhouse condition, two yerba mate clone seedlings were grown (210 days) in pots, each clone in a completely randomized design in factorial scheme (with and without P; four acid soils). The elemental composition of leaves and the growth of plants were determined. Phosphorus promoted plant growth, but this was not accompanied by increased P in leaf tissue in all conditions tested. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ilex paraguariensis St.Hil; Medicinal plant; Metal accumulation; Soil fertility; Trace elements.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000100557

Development and characterization of two new cell lines from common carp, Cyprinus carpio (Linn)
Provedor de dados: 48
Autores: Lakra,Wazir S; Goswami,M; Rajaswaminathan,T; Rathore,Gaurav.
Two new cell lines (CCF and CCH) were established from fin and heart tissues of common carp, Cyprinus carpio. The cells were optimally maintained in Leibovitz-15 medium supplemented with 10% fetal bovine serum (FBS) and 10 ng/ml of basic fibroblastic growth factor (bFGF). The effects of temperature, concentration of FBS and bFGF on the growth of CCF and CCH cells were examined. The temperature ranged from 24 to 32 °C for good growth of the cells. The growth rate of cells was higher in medium containing 10% FBS and the addition of bFGF to the medium significantly increased the growth rate. The CCF cells were found to be epithelial, while the CCH cells were fibroblastic in nature. The cytogenetic analysis of the cell lines revealed a diploid number of 100...
Tipo: Journal article
Palavras-chave: Cyprinus carpio; Cell line; MtDNA.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602010000400002

Construction of an immunotoxin by linking a monoclonal antibody against the human epidermal growth factor receptor and a hemolytic toxin
Provedor de dados: 48
Autores: AVILA,ANA D; CALDERÓN,CARLOS F; PEREZ,RITA M; PONS,CARMEN; PEREDA,CELIA M; ORTIZ,ANA R.
Hybrid molecules obtained through conjugation of monoclonal antibodies and toxins constitute an approach under exploration to generate potential agents for the treatment of cancer and other diseases. A frequently employed toxic component in the construction of such immunotoxins is ricin, a plant toxin which inhibits protein synthesis at ribosomal level and so requires to be internalized by the cell. A hemolytic toxin isolated from the sea anemone Stichodactyla helianthus, which is active at the cell membrane level, was linked through a disulfide bond to the anti-epidermal growth factor receptor monoclonal antibody ior egf/r3. The resulting immunotoxin did not exhibit hemolytic activity except under reducing conditions. It was toxic for H125 cells that...
Tipo: Journal article
Palavras-chave: Epidermal growth factor; Epidermal growth factor receptor; Hemolytic toxins; Immunotoxins; Monoclonal antibodies.
Ano: 2007
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602007000200008

Reproduction and growth in a Neotropical arboreal mouse: Oecomys rutilus (Sigmodontinae: Cricetidae) in French Guiana
Provedor de dados: 49
Autores: Catzeflis,François.
Abstract: Postnatal growth and development of the small Neotropical mouse Oecomys rutilus (Sigmodontinae: Cricetidae) were investigated from birth to day 143, in the laboratory. Morphometric measurements at age of 3 days, of both sexes combined, revealed body weight to be 3.4 ± 0.3 g, mean tail length as 27.4 ± 1.1 mm, and mean hind foot length as 9.3 ± 0.7 mm. Body weight was found to increase steadily until at least 69 days, whereas the instantaneous growth rates of other measurements declined earlier: the daily growth of hind foot length declined to a minimum at age of 24 days, and the growth of tail and of ear declined by the age of 33 days. Average litter size for 12 captive births was 2.5, ranging from 2 to 3. The preserved eye crystalline lens was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometry; Gompertz model; Rodents; Eye-lens weight; Life history.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032019000200207

The impact of climatic variability and climate change on arabic coffee crop in Brazil
Provedor de dados: 53
Autores: Camargo,Marcelo Bento Paes de.
The climatic variability is the main factor responsible for the oscillations and frustrations of the coffee grain yield in Brazil. The relationships between the climatic parameters and the agricultural production are quite complex, because environmental factors affect the growth and the development of the plants under different forms during the growth stages of the coffee crop. Agrometeorological models related to the growth, development and productivity can supply information for the soil water monitoring and yield forecast, based on the water stress. A soil water balance during different growth stages of the coffee crop, can quantify the effect of the available soil water on the decrease of the final yield. Other climatic factors can reduce the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea arabica L.; Global warming; Productivity; Agronomic mitigations and adaptations; Crop zoning.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052010000100030

Development and quality of pineapple guava fruit in two locations with different altitudes in Cundinamarca, Colombia
Provedor de dados: 53
Autores: Parra-Coronado,Alfonso; Fischer,Gerhard; Camacho-Tamayo,Jesús Hernán.
Fruit growth is stimulated by different weather conditions. The aim of this study was to determine the influence of weather conditions on the physicochemical properties of pineapple guava fruit growth. Twenty trees were marked in two production areas located at different altitudes (1,800 and 2,580 m.a.s.l.), and measurements were performed every 7 days from 99 and 141 days post-anthesis to harvest at altitudes of 1,800 and 2,580 m.a.s.l., respectively. The results indicate that altitude and weather conditions greatly influence the growth and development of pineapple guava fruit, and these effects are primarily manifested in the physical characteristics of the fruit. The weight and size of the fruit at harvest are directly related to the altitude of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Climate; Acca sellowiana (O. Berg) Burret; Total soluble solids; Titratable acidity; Hue angle.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052015000300359

Comparison between diploid and tetraploid citrus rootstocks: morphological characterization and growth evaluation
Provedor de dados: 53
Autores: Guerra,Divanilde; Wittmann,Maria Teresa Schifino; Schwarz,Sergio Francisco; Souza,Paulo Vitor Dutra de; Gonzatto,Mateus Pereira; Weiler,Roberto Luis.
Tetraploid citrus rootstocks may present different morphological characteristics and growth when compared to diploid ones. This worked aimed at comparing morphological characteristics and height growth of diploid and tetraploid plants from the rootstocks 'Swingle' citrumelo [C. paradise Macf. x Poncirus trifoliate (L.) Raf], citrange 'Troyer' (C. sinensis (L.) Osb. x P. trifoliata) and citranges 'Fepagro C 13' and 'Fepagro C 37' [C. sinensis cv. Pêra x P. trifoliata] during twelve months. Diploid (2n=18) and tetraploid (2n=36) plants originated from the same seed were identified, cultivated and evaluated every 45 days regarding color, height, petiole length, leaf length and central leaflet width. Significant differences were observed for the evaluated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus; Morphology; Leaf color; Height; Dwarfing.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052014000100001

Biochemical and morphological changes during the growth kinetics of Araucaria angustifolia suspension cultures
Provedor de dados: 52
Autores: Santos,André Luis Wendt dos; Silveira,Vanildo; Steiner,Neusa; Maraschin,Marcelo; Guerra,Miguel Pedro.
Embryogenic cultures of Araucaria angustifolia were established in a BM liquid medium supplemented with 2 µM 2,4-dichlorophenoxyacetic acid, 1 µM 6-benzylaminopurine and 1 µM kinetin (BM2) and in a BM medium free of growth regulators (BM0). During 42 days in culture, the cell growth pattern of both cultures was similar. The pH of the culture medium of both BM0 and BM2 underwent progressive reduction during culture time. For both the embryogenic cultures a preferential uptake of glucose in the late stages of cell growth kinetics was observed. The extracellular protein content was similar for both the embryogenic cultures. Acetocarmine and Evan's blue double stain showed major differences for early somatic embryo organisation, in which only the embryogenic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Araucariaceae; Glucose; PH changes; Protein; Somatic embryogenesis.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000300001

Enhanced solubilization of iron and calcium phosphates by Aspergillus niger by the addition of alcohols
Provedor de dados: 52
Autores: Barroso,Cinthya Babá; Nahas,Ely.
The present study deals with the effect of increased concentrations of alcohols (methanol and ethanol) on the solubilization of FePO4 and CaHPO4 by Aspergillus niger. The efficiency of solubilization (ES) of inorganic phosphates, fungal growth, acid production and pH variation were determined. The concentrations of alcohols that most favored the solubilization of phosphates were 4% methanol and 3% ethanol. The ES of phosphates by the fungus in media containing methanol ranged from 11-96% and 0.4-87% for ethanol. The stimulation or inhibition of solubilization was dependent on greater or lesser fungus growth, acid production and decreased pH. These responses were supported by the correlation between the amount of phosphate dissolved and fungal growth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ethanol; Methanol; Growth; Acid production; Phosphate solubilization.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200003

Modeling the Growth of Byssochlamys fulva on Solidified Apple Juice at Different Temperatures
Provedor de dados: 52
Autores: Longhi,Daniel Angelo; Tremarin,Andréia; Carciofi,Bruno Augusto Mattar; Laurindo,João Borges; Aragão,Gláucia Maria Falcão de.
The aim of this study was to establish primary and secondary models to describe the growth kinetics of Byssochlamys fulva on solidified apple juice at different temperatures. B. fulva was inoculated on solidified apple juice at 10, 15, 20, 25 and 30 °C. Linear-with-breakpoint, Baranyi and Roberts, and Huang primary models (without upper asymptote) were fitted to the data, and they showed good ability to describe the growth kinetics. B. fulva showed longer adaptation time on apple juice than on culture medium, but growth rates were similar as reported in the literature. The dependence of µmax and λ parameters on temperature was described with Square Root and Arrhenius-Davey secondary models, respectively. These models were important to establish...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mould growth; Mathematical modeling; Food microbiology; Predictive mycology.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000600971

Phytochemical and Morphological Evidences for Shikonin Production by Plant Cell Cultures of Onosma sericeum Willd
Provedor de dados: 52
Autores: Gharehmatrossian,Sormeh; Popov,Yu; Ghorbanli,Mahlagha; Safaeian,Shila; Iranbakhsh,Alireza.
ABSTRACT Shoot regeneration, callus growth, and biosynthesis of shikonin in callus cultures of Onosma sericeum were examined. Plant tissue culture was used as an alternative method for increasing the production of shikonin, a secondary metabolite. The isolated cultures were subjected to abiotic factors such as light, plant growth regulators, and nutritional factors. Identification was carried out by High- Performance Liquid Chromatography (HPLC) after 10th subculture. Nodal explants were incubated in Murashige and Skoog (MS) medium along with different combination of growth hormones. Shoot regeneration from calli were achieved on MS basal medium supplemented with 3 mg/l 6-benzylaminopurine (BAP) and 0.5 mg/l Naphthalene acetic acid (NAA) under light cycle....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth index; Medicinal plant; Plant regeneration; Secondary metabolite.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100428

Effect of picloram, additives and plant growth regulators on somatic embryogenesis of Phyla nodiflora (L.) Greene
Provedor de dados: 52
Autores: Ahmed,Abdul Bakrudeen Ali; Rao,Adhikarla Suryanarayana; Rao,Mandali Venkateswara; Taha,Rosna Mat.
The present study describes the plant regeneration via somatic embryogenesis in suspension culture derived from the leaf and stem explants of Phyla nodiflora. The medium type, plant growth regulators, complex extract (coconut milk and malt extract) and anti-oxidant (activated charcoal, ascorbic acid, Polyvinylpyrrolidone and citric acid) markedly influenced the embryo regeneration of P. nodiflora. MS with 2,4-D and activated charcoal (10 mg/L) gave the highest stimulation of embryogenic callus growth. Optimized callus was transfered into suspension culture, which showed the globular, heart shaped embryos in MS with 2,4-D + BA + picloram (0.1 mg/L), coconut milk (10 ml/L), citric acid (100 mg/L) on 6th subcultures. Further development stages such as torpedo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Somatic embryogenesis (SEs); Picloram; Ascorbic acid; Coconut milk; Plant growth regulators; Murashige and Skoog medium.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000100002

Growth and survival of dorado Salminus brasiliensis (Pisces, Characidae) post-larvae cultivated with different types of food and photoperiods
Provedor de dados: 52
Autores: Schütz,Jackson Haroldo; Nuñer,Alex Pires de Oliveira.
The effect of food and photoperiod on dorado (Salminus brasiliensis) post-larvae growth and survival was investigated using the following treatments: LD (Light: Dark) 24:0 + Artemia nauplii (A), LD 24:0 + fish prey (F), LD 14:10 + A, LD 14:10 + F, LD 0:24 +A and LD 0:24 + F. Prochilodus lineatus larvae were used as fish prey. Higher survival rates were registered in fish prey treatments (P&lt;0.05) and were not influenced by photoperiod whereas in Artemia treatments, the survival was very low, but directly proportional to light increase (P&lt;0.05). The better growth in LD 0:24 was related to a safe-energy strategy that reduced energy consumption whereas in LD 24:0, the higher energy consumption reduced the growth. In intermediate photoperiod, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dorado; Food type; Larviculture; Photoperiod; Salminus brasiliensis.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000300010

Growth, sporulation and production of bioactive compounds by Bacillus subtilis R14
Provedor de dados: 52
Autores: Carvalho,André Lacerda Ulysses de; Oliveira,Fábio Henrique Portella Corrêa de; Mariano,Rosa de Lima Ramos; Gouveia,Ester Ribeiro; Souto-Maior,Ana Maria.
The physiology of B. subtilis R14 was investigated in minimal medium under excess-oxygen and oxygen-limited conditions. Growth and efficient sporulation could be achieved in excess-oxygen culture on medium with readily metabolizable carbon and nitrogen sources, which allowed high growth rate and high biomass yield. A short transition phase between the exponential growth and sporulation could be attained by formulating a medium with a well-balanced C/N ratio. Under oxygen-limitation, but in the presence of essential nutrients (i.e. excess-nutrient cultivation), B. subtilis R14 produced bioactive compounds, which showed activity against several phytopathogenic bacteria. Under anaerobic condition, the organism did not grow neither through fermentation nor...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacillus subtilis; Batch cultivation; Oxygen availability; Antimicrobial activity.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000300020

Arsenic tolerance of Microcystis novacekii (Komárek-Compère, 1974) and its arsenic decontamination potential
Provedor de dados: 52
Autores: Ferreira,Fernanda Aires Guedes; Franco,Maione Wittig; Oliveira,Dirce Maria De; Magalhães,Sérgia Maria Starling; Barbosa,Francisco Antônio Rodrigues.
ABSTRACT Cyanobacteria possess metallic ion interaction properties that should be explored with the aim of recovering arsenic (As) contaminated areas. Contamination of As is an issue of worldwide concern due to the risk of human chronic intoxication and negative environmental health effects. In this study the potential decontamination of As(III) and As(V) using cyanobacteria cultures was assessed. Microcystis novacekii (Komárek-Compere, 1974) showed normal growth in concentrations of As(V) similar to those found in natural environments contaminated with As, demonstrating its resistance to As(V). Growth rates gradually decreased upon exposure to high As(V) concentrations from 600 to 5630 mg.L-1 while As(III) affected growth from 14.7 - 85.7 mg.L-1. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arsenic; Cyanobacteria; Bioaccumulation; Toxicity; Growth rates.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100414

Effects of betaine on the growth of the fish piauçu, Leporinus macrocephalus
Provedor de dados: 52
Autores: Normandes,Edivaldo Bento; Barreto,Rodrigo Egydio; Carvalho,Robson Francisco; Delicio,Helton Carlos.
In this study was tested the effect of betaine on the growth performance of the piauçu fish. For this, twenty-one fish (mean ± SD: body weight: 14.9 ± 1.3 g) were randomly distributed in one out of three experimental treatments (n = 7 each; 1 fish/aquarium): without betaine added in the food (control); 3.6 g betaine/Kg of food; 7.1 g betaine/Kg of food. The fish were exposed to experimental conditions for 60 days. Fish presented significant growth throughout experimentation, but no statistically significant difference was found for any parameter analyzed among the treatments, except for condition factor, which was higher in control group than betaine ones. Accordingly, it was concluded that betaine had no enhancing effect on growth of piauçu.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth; Betaine; Fish; Feeding behavior.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000600010

Possible Associations between Bovine Growth Hormone Gene Polymorphism and Reproductive Traits
Provedor de dados: 52
Autores: Unanian,Maria Marina; Barreto,Cristine Chaves; Cordeiro,Célia Maria Torres; Freitas,Alfredo Ribeiro; Josahkian,Luiz Antonio.
The polymorphism of the bovine growth hormone gene (bGH) was studied in 211 Nellore pure breed males for association with reproductive traits. Scrotal circumference and testosterone concentrations were collected monthly from 10 until 16 months of age. Additionally, testicular growth rates were calculated. DNA was amplified by PCR and digested using Msp I and Hae III restriction enzymes. Every polymorphism presented two alleles. The predominant alleles were D (0.85) and F (0.98), respectively, and genotype EE - bGH/Hae III was missing. Significant association (P&lt;0.05) between bGH/Msp I polymorphism, scrotal circumference and testicular growth after puberty, as well as between bGH/Hae III and testosterone concentrations at puberty were detected. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bull; Growth hormone gene polymorphism; Testosterone concentrations.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000300007

Naringenin inhibits the growth and stimulates the lignification of soybean root
Provedor de dados: 52
Autores: Bido,Graciene de Souza; Ferrarese,Maria de Lourdes Lucio; Marchiosi,Rogério; Ferrarese-Filho,Osvaldo.
The flavanone naringenin, an intermediate in flavonoid biosynthesis, was tested for its effect on root growth, phenylalanine ammonia-lyase (PAL) and peroxidase (POD) activities, as well as phenolic compounds and lignin contents in soybean (Glycine max L. Merrill) seedlings. Three-day-old seedlings were cultivated in half-strength Hoagland nutrient solution (pH 6.0), with or without 0.1 to 0.4 mM naringenin in a growth chamber (25°C, 12-h photoperiod, irradiance of 280 µmol m-2 s-1) for 24 h. Inhibitory effects on root growth (length, weight, cell viability), PAL and soluble POD activities were detected after naringenin treatments. These effects were associated with stimulatory activity of the cell wall-bound POD followed by an increase in the lignin...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelopathy; Lignin; Flavonoid; Peroxidase; Phenylalanine ammonia-lyase; Root growth.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000300005

Tumor growth characteristics of the Walker 256 AR tumor, a regressive variant of the rat Walker 256 A tumor
Provedor de dados: 52
Autores: Guimarães,Fernando; Schanoski,Alessandra Soares; Cavalcanti,Tereza Cristina Samico; Juliano,Priscila Bianchi; Viera-Matos,Ana Neuza; Rettori,Ovídio.
The present study aimed at characterizing the subcutaneous development of the Walker 256 (W256) AR tumor, a regressive variant of the rat W256 A tumor. Wistar rats were injected subcutaneously with 4x10(6) W256 A or W256 AR tumor cells. The development of tumors was evaluated daily by percutaneous measurements. None of the W256 A tumors (n=20) regressed, but 62% of the W256 AR tumor-bearing rats (n=21) underwent complete tumor regression within 35 days. Continuous growth of AR tumors was characterized by an increase of the tumor growth rate from day 12, which reached values above 1.0 g/day, and were significantly higher (p&lt;0.05) than those of the regressive AR tumors. Immunosuppression by irradiation before subcutaneous injection of AR cells completely...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tumor growth rate; Spontaneous tumor regression; Wistar rats; Walker 256.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000500014

Shoot and root responses of Trifolium vesiculosum to boron fertilization in an acidic Brazilian soil
Provedor de dados: 52
Autores: Favaretto,Nerilde; Motta,Antônio Carlos Vargas; Barcik,Cristina; Lustosa,Sebastião Brasil Campos; Comin,Jucinei José.
To analyze the influence of boron fertilization on shoot and root growth of Trifolium vesiculosum (arrowleaf clover), an acid soil profile (60 cm depth with 67% Al saturation) was recreated in a column (three layers of 20 cm each). Lime and fertilizer (P and K) were incorporated into the top 20 cm. The treatments consisted of six boron rates where boric acid was mixed throughout the profile. Addition of boron to soil with low pH and high Al increased the root and shoot growth, independent of the rate applied. Boron inhibited Al toxicity, but no effect was observed in the root length when Al was not present in the soil. It was also observed that there was more root growth below the plow layer (0-20 cm,) suggesting better root distribution in the soil...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Root and shoot growth; Boron; Aluminum; Acidic soil.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000400005

Differential regulation of vitamin D receptor expression in distinct leukemic cell lines upon phorbol ester-induced growth arrest
Provedor de dados: 56
Autores: Folgueira,M.A.A.K.; Federico,M.H.H.; Roela,R.A.; Maistro,S.; Katayama,M.L.H.; Brentani,M.M.
A close correlation between vitamin D receptor (VDR) abundance and cell proliferation rate has been shown in NIH-3T3 fibroblasts, MCF-7 breast cancer and in HL-60 myeloblastic cells. We have now determined if this association occurs in other leukemic cell lines, U937 and K562, and if VDR content is related to c-myc expression, which is also linked to cell growth state. Upon phorbol myristate acetate (PMA) treatment, cells from the three lineages (HL-60, U937 and K562) differentiated and expressed specific surface antigens. All cell lines analyzed were growth inhibited by PMA and the doubling time was increased, mainly due to an increased fraction of cells in the G0/G1 phase, as determined by flow cytometry measurements of incorporated bromodeoxyuridine and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Receptors; Calcitriol; Cell division; Cell differentiation; Leukemia; Phorbol esters.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000500011

Clinical and molecuar characterization of Brazilian patients with growth hormone gene deletions
Provedor de dados: 56
Autores: Arnhold,I.J.P.; Osorio,M.G.F.; Oliveira,S.B.; Estefan,V.; Kamijo,T.; Krishnamani,M.R.S.; Cogan,J.D.; Phillips III,J.A.; Mendonça,B.B.
Genomic DNA from 23 patients with isolated growth hormone (GH) deficiency (12 males and 11 females: heights -4.9 ± 1.4 SDS) was screened for GH gene deletions by restriction endonuclease analysis of polymerase chain reaction amplification products. Three unrelated patients had typical features of severe GH deficiency and deletions (6.7 kb in two and 7.6 kb in one) of the GH gene. The two patients with 6.7-kb deletions developed growth-attenuating anti-GH antibodies whereas the patient with the 7.6-kb deletion continued to grow with GH replacement therapy. Our finding that 3/23 (~13%) Brazilian subjects had GH gene deletions agrees with previous studies of severe isolated GH deficiency subjects in other populations. Two of three subjects (67%) with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth; Growth hormone; Dwarfism; Gene.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000400003

Brazilian scientific funding agency budgets have not matched the country's economic growth
Provedor de dados: 56
Autores: Helene,A.F.; Ribeiro,P.L.
The growth of the Brazilian economy in recent years has created an atmosphere of optimism in various segments of Brazilian society, with several important international repercussions. In this paper, we analyze in detail how this economic growth is reflected in investments in science and technology made by major academic funding agencies. As a result, we observed a discrepancy in the growth of funding input and the growth of the Brazilian gross domestic product. This fact associated with an increased academic output entails negative consequences for the system. This may be a symptom of an academic community not fully understood by society and vice versa. Finally, we believe that a long-lasting important change in investment policy in science is necessary in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Scientific investment; Brazil; Inputs and outputs; Gross domestic product; Scholarship.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000200117

DNA methylation regulates expression of VEGF-C, and S-adenosylmethionine is effective for VEGF-C methylation and for inhibiting cancer growth
Provedor de dados: 56
Autores: Da,M.X.; Zhang,Y.B.; Yao,J.B.; Duan,Y.X.
DNA hypomethylation may activate oncogene transcription, thus promoting carcinogenesis and tumor development. S-adenosylmethionine (SAM) is a methyl donor in numerous methylation reactions and acts as an inhibitor of intracellular demethylase activity, which results in hypermethylation of DNA. The main objectives of this study were to determine whether DNA hypomethylation correlated with vascular endothelial growth factor-C (VEGF-C) expression, and the effect of SAM on VEGF-C methylation and gastric cancer growth inhibition. VEGF-C expression was assayed by Western blotting and RT-qPCR in gastric cancer cells, and by immunohistochemistry in tumor xenografts. VEGF-C methylation was assayed by bisulfite DNA sequencing. The effect of SAM on cell apoptosis was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: VEGF-C; Methylation; S-adenosylmethionine; Gastric cancer.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014001201021

Ghrelin attenuates the growth of HO-8910 ovarian cancer cells through the ERK pathway
Provedor de dados: 56
Autores: Bai,R.X.; Wang,W.P.; Zhao,P.W.; Li,C.B.
Ovarian cancer is one of the most common causes of death from gynecologic tumors and is an important public health issue. Ghrelin is a recently discovered bioactive peptide that acts as a natural endogenous ligand of the growth hormone secretagogue receptor (GHSR). Several studies have identified the protective effects of ghrelin on the mammalian reproductive system. However, little research has been done on the effects of ghrelin on ovarian cancer cells, and the underlying mechanisms of these effects. We sought to understand the potential involvement of mitogen-activated protein kinases (MAPKs) in ghrelin-mediated inhibition of growth of the ovarian line HO-8910. We applied different concentrations of ghrelin and an inhibitor of the ghrelin receptor...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ghrelin; MAPKs; HO-8910; Apoptosis.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000300602

Glial fibrillary acidic protein (GFAP): modulation by growth factors and its implication in astrocyte differentiation
Provedor de dados: 56
Autores: Gomes,F.C.A.; Paulin,D.; Moura Neto,V.
Intermediate filament (IF) proteins constitute an extremely large multigene family of developmentally and tissue-regulated cytoskeleton proteins abundant in most vertebrate cell types. Astrocyte precursors of the CNS usually express vimentin as the major IF. Astrocyte maturation is followed by a switch between vimentin and glial fibrillary acidic protein (GFAP) expression, with the latter being recognized as an astrocyte maturation marker. Levels of GFAP are regulated under developmental and pathological conditions. Upregulation of GFAP expression is one of the main characteristics of the astrocytic reaction commonly observed after CNS lesion. In this way, studies on GFAP regulation have been shown to be useful to understand not only brain physiology but...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: CNS; Astrocyte; Growth factors; Intermediate filaments; GFAP; Vimentin; GFAP gene.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999000500016

Microalgae population dynamics in photobioreactors with secondary sewage effluent as culture medium
Provedor de dados: 58
Autores: Marchello,Adriano E.; Lombardi,Ana T.; Dellamano-Oliveira,Maria José; Souza,Clovis W.O. de.
Nitrogen and phosphorus present in sewage can be used for microalgae growth, possibiliting cost reduction in the production of microalgae at the same time that it decreases the eutrophication potential of the effluent. This research aimed at monitoring the native community of microalgae and coliform bacteria in a secondary effluent from anaerobic municipal sewage treatment. Two treatments (aerated and non-aerated) were performed to grow microalgae under semi-controlled conditions in semi-closed photobioreactors in a greenhouse. The results showed no significant pH and coliforms (total and Escherichia coli) variation between treatments. Nutrient concentrations were reduced supporting microalgae growth up to 107 cells.mL−1independent of aeration. Exponential...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microalgae; Effluent treatment; Coliforms; Escherichia coli; Chlorella vulgaris.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000100075

Use of modified Richards model to predict isothermal and non-isothermal microbial growth
Provedor de dados: 58
Autores: Teleken,Jhony Tiago; Galvão,Alessandro Cazonatto; Robazza,Weber da Silva.
Abstract Mathematical models are often used to predict microbial growth in food products. An important class of these models involves the adaptation of classical sigmoid functions, such as the Gompertz and logistic functions. This study aimed to validate the use of the modified Richards model in various situations, which have not previously been tested. The model was obtained through solving a system of two differential equations and could be applied to both isothermal and non-isothermal environments. To test and validate this model, we used published datasets containing data for the growth of Pseudomonas spp. in fish products. The results obtained after fitting the model showed that it could be effectively used to describe and predict the Pseudomonas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Richards model; Predictive microbiology; Non-isothermal regimens.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000300614

Plant growth promoting capability and genetic diversity of bacteria isolated from mud volcano and lime cave of Andaman and Nicobar Islands
Provedor de dados: 58
Autores: Venkadesaperumal,Gopu; Amaresan,Natrajan; Kumar,Krishna.
Twenty four bacterial strains from four different regions of mud volcano and lime cave were isolated to estimate their diversity, plant growth promoting and biocontrol activities to use them as inoculant strains in the fields. An excellent antagonistic effect against four plant pathogens and plant growth promoting properties such as IAA production, HCN production, phosphate solubilization, siderophore production, starch hydrolysis and hydrolytic enzymes syntheses were identified in OM5 (Pantoea agglomerans) and EM9 (Exiguobacterium sp.) of 24 studied isolates. Seeds (Chili and tomato) inoculation with plant growth promoting strains resulted in increased percentage of seedling emergence, root length and plant weight. Results indicated that co-inoculation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant growth promotion; Phytopathogens; Mud volcano; Lime cave; Amplified ribosomal DNA restriction analysis (ADRDA).
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000400018

Effects of pH and temperature on growth and glycerol production kinetics of two indigenous wine strains of Saccharomyces cerevisiae from Turkey
Provedor de dados: 58
Autores: Yalcin,Seda Karasu; Ozbas,Z. Yesim.
The study was performed in a batch system in order to determine the effects of pH and temperature on growth and glycerol production kinetics of two indigenous wine yeast strains Saccharomyces cerevisiae Kalecik 1 and Narince 3. The highest values of dry mass and specific growth rate were obtained at pH 4.00 for both of the strains. Maximum specific glycerol production rates were obtained at pH 5.92 and 6.27 for the strains Kalecik 1 and Narince 3, respectively. Kalecik 1 strain produced maximum 8.8 gL-1 of glycerol at pH 6.46. Maximum glycerol concentration obtained by the strain Narince 3 was 9.1 gL-1 at pH 6.48. Both yeasts reached maximum specific growth rate at 30ºC. Optimum temperature range for glycerol production was determined as 25-30ºC for the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Production kinetics; Glycerol; Growth parameters; Saccharomyces cerevisiae.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000200024

Selection of endophytic fungi from comfrey (Symphytum officinale L.) for in vitro biological control of the phytopathogen Sclerotinia sclerotiorum (Lib.)
Provedor de dados: 58
Autores: Rocha,Rafaeli; Luz,Daniela Eleutério da; Engels,Cibelle; Pileggi,Sônia Alvim Veiga; Jaccoud Filho,David de Souza; Matiello,Rodrigo Rodrigues; Pileggi,Marcos.
Biological control consists of using one organism to attack another that may cause economic damage to crops. Integrated Pest Management (IPM) is a very common strategy. The white mold produced by Sclerotiniasclerotiorum (Lib.) causes considerable damage to bean crops. This fungus is a soil inhabitant, the symptoms of which are characterized by water-soaked lesions covered by a white cottony fungal growth on the soil surface and/or the host plant. Possible biological control agents taken from plants are being investigated as phytopathogen inhibitors. These are endophytic microorganisms that inhabit the intercellular spaces of vegetal tissues and are often responsible for antimicrobial production. The objective of the present study was to select endophytic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological control; Sclerotinia sclerotiorum (Lib.); Endophytic strain; Symphytum officinale L.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000100011

Bacteria in combination with fertilizers promote root and shoot growth of maize in saline-sodic soil
Provedor de dados: 58
Autores: Zafar-ul-Hye,Muhammad; Farooq,Hafiz Muhammad; Hussain,Mubshar.
Salinity is the leading abiotic stress hampering maize (Zea maysL.) growth throughout the world, especially in Pakistan. During salinity stress, the endogenous ethylene level in plants increases, which retards proper root growth and consequent shoot growth of the plants. However, certain bacteria contain the enzyme 1-aminocyclopropane-1-carboxylate (ACC) deaminase, which converts 1-aminocyclopropane-1-carboxylic acid (an immediate precursor of ethylene biosynthesis in higher plants) into ammonia and α-ketobutyrate instead of ethylene. In the present study, two Pseudomonas bacterial strains containing ACC-deaminase were tested separately and in combinations with mineral fertilizers to determine their potential to minimize/undo the effects of salinity on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Maize; ACC-deaminase; Rhizobacteria; Salinity.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000100097

Efficiency of treatments for controlling Trichoderma spp during spawning in cultivation of lignicolous mushrooms
Provedor de dados: 58
Autores: Colavolpe,María Belén; Mejía,Santiago Jaramillo; Albertó,Edgardo.
Trichoderma spp is the cause of the green mold disease in mushroom cultivation production. Many disinfection treatments are commonly applied to lignocellulose substrates to prevent contamination. Mushroom growers are usually worried about the contaminations that may occur after these treatments during handling or spawning. The aim of this paper is to estimate the growth of the green mold Trichoderma sp on lignocellulose substrates after different disinfection treatments to know which of them is more effective to avoid contamination during spawning phase. Three different treatments were assayed: sterilization (121 ºC), immersion in hot water (60 and 80 ºC), and immersion in alkalinized water. Wheat straw, wheat seeds and Eucalyptus or Populus sawdust were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trichoderma sp; Pleurotus ostreatus; Gymnopilus pampeanus; Green mold disease.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000400017

Effect of cinnamomum zeylanicum blume essential oil on the rowth and morphogenesis of some potentially pathogenic Aspergillus species
Provedor de dados: 58
Autores: Carmo,Egberto Santos; Lima,Edeltrudes de Oliveira; Souza,Evandro Leite de; Sousa,Frederico Barbosa de.
Cinnamomum zeylanicum Blume is known for a wide range of medicinal properties. This study aimed to assess the interference of C. zeylanicum essential oil on the growth and morphogenesis of some potentially pathogenic Aspergillus species. The essential oil presented strong antifungal effect causing the growth inhibition of the assayed strains and development of large growth inhibition zones. MIC50 and MIC90 values were 40 and 80 µL/mL, respectively. 80, 40 and 20 µL/mL of the oil strongly inhibited the radial mycelial growth of A. niger, A. flavus and A. fumigatus along 14 days. 80 and 40 µL/mL of the oil caused a 100% inhibition of the fungal spore germination. Main morphological changes observed under light microscopy provided by the essential oil in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aspergillus; Cinnamomum zeylanicum Blume; Essential oil; Antifungal activity.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000100021

Aeration effect on Spirulina platensis growth and γ-linolenic acid production
Provedor de dados: 58
Autores: Ronda,Srinivasa Reddy; Bokka,Chandra Sekhar; Ketineni,Chandrika; Rijal,Binod; Allu,Prasada Rao.
The influence of aeration on algal growth and gamma-linolenic acid (GLA) production in a bubble column photobioreactor was investigated. Studies were performed in a 20-L reactor at different aeration rates (0.2-2.5 vvm). Static, continuous, and periodic operation of air resulted in 41.9%, 88.4%, and 108% air saturation of dissolved oxygen, for which the corresponding values of GLA were 2.3, 6.5, and 7.5 mg·g-1 dry cell weight, respectively. An increase in the aeration rate from 0.2 to 2.5 vvm enhanced both the specific growth rate and GLA content under periodic sparging in the bicarbonate medium. With a 6-fold increase in the aeration rate, the GLA content of the alga increased by 69.64% (5.6-9.5 mg· g-1 dry cell weight). In addition, the total fatty acid...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spirulina platensis; Aeration; Photobioreactor; Gamma-linolenic acid.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000100002

Impact of water potential on growth and germination of Fusarium solani soilborne pathogen of peanut
Provedor de dados: 58
Autores: Palacios,Sofia; Casasnovas,Francisco; Ramirez,María L.; Reynoso,María. M.; Torres,Adriana M.
Studies were conducted to determine the effect of osmotic and matric stress on germination and growth of two Fusarium solani strains, the etiological agent responsible of peanut brown root rot. Both strains had similar osmotic and matric potential ranges that allowed growth, being the latter one narrower. F. solani showed the ability to grow down to -14 MPa at 25 °C in non-ionic modified osmotic medium, while under matric stress this was limited to -8.4 MPa at 25 °C. However, both strains were seen to respond differently to decreasing osmotic and matric potentials, during early stages of germination. One strain (RC 338) showed to be more sensitive to matric than osmotic (non ionic) and the other one (RC 386) showed to be more sensitive to osmotic than...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fusarium solani; Germination; Growth; Matric potential; Osmotic potential; Peanut brown root rot; Soilborne pathogen.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000300046

Influence of phenolic compounds on the growth and arginine deiminase system in a wine lactic acid bacterium
Provedor de dados: 58
Autores: Alberto,María R.; Manca de Nadra,María C.; Arena,Mario E.
The influence of seven phenolic compounds, normally present in wine, on the growth and arginine deiminase system (ADI) of Lactobacillus hilgardii X1B, a wine lactic acid bacterium, was established. This system provides energy for bacterial growth and produces citrulline that reacts with ethanol forming the carcinogen ethyl carbamate (EC), found in some wines. The influence of phenolic compounds on bacterial growth was compound dependent. Growth and final pH values increased in presence of arginine. Arginine consumption decreased in presence of protocatechuic and gallic acids (31 and 17%, respectively) and increased in presence of quercetin, rutin, catechin and the caffeic and vanillic phenolic acids (between 10 and 13%, respectively). ADI enzyme activities...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Polyphenols; Arginine; Lactobacillus hilgardii.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000100018

HIV-1 anti-retroviral drug effect on the C. albicans hyphal growth rate by a Bio-Cell Tracer system
Provedor de dados: 58
Autores: Melo,Nadja Rodrigues de; Vilela,Maria Marluce Santos; Jorge Junior,Jacks; Kamei,Katsuhiko; Miyaji,Makoto; Fukushima,Kazutaka; Nishimura,Kazuko; Groeneveld,Philip; Kelly,Steven L.; Taguchi,Hideaki.
Declining incidence of oropharyngeal candidosis and opportunistic infections over recent years can be attributed to the use of highly active anti-retroviral therapy (HAART). Infection with C. albicans generally involves adherence and colonization of superficial tissues. During this process, budding yeasts are able to transform to hyphae and penetrate into the deep tissue. Using the biocell tracer system, C. albicans hyphal growth was dynamically observed at the cellular level. Ritonavir was effective in the inhibition of hyphal growth with growth rate of 0.8 mum/min. This study showed the in vitro effect of HIV anti-retroviral drug on the growth rate of the C. albicans hyphae.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Candida; Hyphal; Protease inhibitor.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000300006

Identification and characterization of the endophytic plant growth prompter Bacillus Cereus strain mq23 isolated from Sophora Alopecuroides root nodules
Provedor de dados: 58
Autores: Zhao,Longfei; Xu,Yajun; Sun,Ran; Deng,Zhenshan; Yang,Wenquan; Wei,Gehong.
Endophytes MQ23 and MQ23R isolated from Sophora alopecuroides root nodules were characterized by observing their ability to promote plant growth and employing molecular analysis techniques. Results showed that MQ23 and MQ23R are potential N2-fixing endophytes and belong to the same species as Bacillus cereus. MQ23 was shown to be able to produce siderophores, IAA, and demonstrate certain antifungal activity to plant pathogenic fungi. Co-inoculation with MQ23+MQ23II showed a more significant effect than inoculation alone in vitro for most of positive actions suggesting they have a cooperative interaction. Results of plant inoculation with endophytes indicated that the growth indexes of co-inoculated MQ23+MQ23II were higher than those of inoculated alone...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant growth promoting characterization; Sophora alopecuroides; Root nodules; Endophytic bacteria; Bacillus cereus.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000200022

Effect of combined function of temperature and water activity on the growth of Vibrio harveyi
Provedor de dados: 58
Autores: Zhou,Kang; Gui,Meng; Li,Pinglan; Xing,Shaohua; Cui,Tingting; Peng,Zhaohui.
Vibrio harveyi is considered as a causative agent of the systemic disease, vibriosis, which occurs in many biological fields. The effects of temperatures (12.9-27.1 ºC) and water activity (NaCl% 0.6%-3.4%) on V. harveyi were investigated. The behavior and growth characteristics of V. harveyi was studied and modeled. Growth curves were fitted by using Gompertz and Baranyi models, and the Baranyi model showed a better fittness. Then, the maximum growth rates (µmax) and lag phase durations (LPD, λ) obtained from both Gompertz and Baranyi model were modeled as a combination function of temperature and water activity using the response surface and Arrhenius-Davey models for secondary model. The value of r², MSE, bias and accuracy factor suggest Baranyi model...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vibrio harveyi; Modelling; Temperature; Water activity.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000400018

Endophytic Bacillus strains enhance pearl millet growth and nutrient uptake under low-P
Provedor de dados: 58
Autores: Ribeiro,Vitória Palhares; Marriel,Ivanildo Evódio; Sousa,Sylvia Morais de; Lana,Ubiraci Gomes de Paula; Mattos,Bianca Braz; Oliveira,Christiane Abreu de; Gomes,Eliane Aparecida.
Abstract Bacterial endophytes are considered to have a beneficial effect on host plants, improving their growth by different mechanisms. The objective of this study was to investigate the capacity of four endophytic Bacillus strains to solubilize iron phosphate (Fe-P), produce siderophores and indole-acetic acid (IAA) in vitro, and to evaluate their plant growth promotion ability in greenhouse conditions by inoculation into pearl millet cultivated in a P-deficient soils without P fertilization, with Araxá rock phosphate or soluble triple superphosphate. All strains solubilized Fe-P and three of them produced carboxylate-type siderophores and high levels of IAA in the presence of tryptophan. Positive effect of inoculation of some of these strains on shoot...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Endophytic; Indole-acetic acid; Phosphate solubilizing; Plant growth promotion; Siderophores.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000500040

Electrical stimulation of saccharomyces cerevisiae cultures
Provedor de dados: 58
Autores: Araújo,Ofelia Q.F.; Coelho,Maria Alice Z.; Margarit,Isabel C.P.; Vaz-Junior,Carlos A.; Rocha-Leão,Maria Helena M.
Modulation of cell endogenous membrane potential by an external electrical field influences the structure and function of membrane compartments, proteins and lipid bi-layer. In this work, the effects of applied potential on Saccharomyces cerevisiae growth were characterized through simple yet conclusive experiments. Cell growth time profile and cell division were investigated as macroscopic response to the electrical stimulation. Control experiments were conducted under identical conditions except for the absence of applied potential. Through comparative analysis, electrical stimulation was verified to alter cell cycle as smaller sized population was observed, suggesting that a synchrony in cell division was promoted. Power spectral analysis was employed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Electrochemical stress; Saccharomyces cerevisiae; Cell cycle; Viability.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822004000100016

Synergistic growth effect among bacteria recovered from root canal infections
Provedor de dados: 58
Autores: Moreira Júnior,Gil; Ribeiro Sobrinho,Antônio Paulino; Bambirra,Bernardo Henrique Silva; Bambirra,Felipe Henrique Silva; Carvalho,Maria Auxiliadora Roque; Farias,Luiz Macedo; Nicoli,Jacques Robert; Moreira,Elizabeth Spangler.
The objective of this study was to determine the ecological relationships between bacterial species that colonize infected root canals. Root canal bacteria recovered from one patient with pulp canal necrosis were evaluated in vitro for synergistic and antagonistic activities determined by mono and co-culture growth kinetics and the production of bacteriocin-like substances using the double layer diffusion method. Peptostreptococcus prevotii triggered a significant increase of Fusobacterium nucleatum growth, while the former bacteria did not affect the growth of P. prevotii. The bacterial species did not produce antagonism activity against itself or against any of the other two species. Despite many studies have demonstrated the capability of root canal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Root canal; Infection; Bacterial relationships.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000300017

Growth and exopolysaccharide production by Streptococcus thermophilus ST1 in skim milk
Provedor de dados: 58
Autores: Zhang,Tiehua; Zhang,Chunhong; Li,Shengyu; Zhang,Yanchun; Yang,Zhennai.
To analyze the exopolysaccharide (EPS) production by Streptococcus thermophilus ST1, cultures were cultivated in 10% (w/v) reconstituted skim milk under different growth conditions including various temperatures and pHs of growth medium, supplementation of the medium with various carbon sources (glucose, lactose, sucrose, galactose and fructose) and nitrogen source (whey protein concentrate, or WPC). The results showed that most EPS production by strain ST1 was obtained at a temperature (42°C) and pH (6.5) optimal for its growth. Supplementation of the skim milk medium with either carbohydrates or WPC increased both growth and polymer formation by different extents, with sucrose being most effective among the carbon sources tested. Under the optimal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Exopolysaccharide; Streptococcus thermophilus ST1; Skim milk.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000400033

Soil streptomycetes with in vitro activity against the yam pathogens Curvularia eragrostides and Colletotrichum gloeosporioides
Provedor de dados: 58
Autores: Soares,Ana Cristina Fermino; Sousa,Carla da Silva; Garrido,Marlon da Silva; Perez,Jane Oliveira; Almeida,Nailson Santos de.
Yam (Dioscorea cayennensis Lam), an important crop in the Northeastern region of Brazil, is susceptible to the attack of several phytopathogenic fungi, such as Curvularia eragrostides (Henn.) Meyer and Colletotrichum gloeosporioides (Penz.), which cause leaf spot diseases. This work aimed to evaluate the effect of six actinomycete isolates (S. thermotolerans, S. griseus subsp. griseus, Streptomyces sp. N0035, S. purpurascens, and two isolates identified as Streptomyces sp.), as well as the effect of their secondary metabolites, on mycelium growth and spore germination of C. eragrostides and C. gloeosporioides, from yam plants, cultivar da Costa. Additionally, the chitinolytic activity of these actinomycete strains was determined in a minimum salt growth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biocontrol; Dioscorea cayennensis; Actinomycetes; Secondary metabolites.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000400010

Genetic characterization, evaluation of growth and production of biomass of strains from wild edible mushrooms of Lyophyllum of Central Mexico
Provedor de dados: 58
Autores: Arana-Gabriel,Yolanda; Burrola-Aguilar,Cristina; Garibay-Orijel,Roberto; Matías-Ferrer,Noemí; Franco-Maass,Sergio; Mata,Gerardo.
Abstract The present study conducted a genetic characterization and determined growth rate and biomass production in solid and liquid media, using strains obtained from wild edible sporomes of Lyophyllum that grow in high mountains. Vegetative isolation was used to obtain a total of four strains, which were divided into two clades within the section Difformia: Lyophyllum sp. and Lyophyllum aff. shimeji. Growth rate and biomass production were influenced by both the culture media and the strains. In a potato dextrose agar medium, the strains presented a higher growth rate, while in a malt extract-peptone and yeast agar medium, the growth rate was lower, but with a higher biomass production that was equal to that in the malt extract-peptone and yeast liquid...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lyophyllum section Difformia; Native germplasm; Culture; Mycelium; Pellets.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000300632

Inoculation of tomato seedlings with Trichoderma Harzianum and Arbuscular Mycorrhizal Fungi and their effect on growth and control of wilt in tomato seedlings
Provedor de dados: 58
Autores: Mwangi,Margaret W.; Monda,Ethel O.; Okoth,Sheila A.; Jefwa,Joyce M.
A green house study was conducted to investigate the ability of an isolate of Trichoderma harzianum (P52) and arbuscular mycorrhizal fungi (AMF) in enhancing growth and control of a wilt pathogen caused by Fusarium oxysporum f. sp. lycopersici in tomato seedlings. The plants were grown in plastic pots filled with sterilized soils. There were four treatments applied as follows; P52, AMF, AMF + P52 and a control. A completely randomized design was used and growth measurements and disease assessment taken after 3, 6 and 9 weeks. Treatments that significantly (P &lt; 0.05) enhanced heights and root dry weights were P52, AMF and a treatment with a combination of both P52 and AMF when compared the control. The treatment with both P52 and AMF significantly (P...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arbuscular mycorrhizal Fungi (AMF); Trichoderma harzianum (P52); Disease severity.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000200015

Response surface methodology of nitrilase production by recombinant Escherichia coli
Provedor de dados: 58
Autores: Dubey,Sachin; Singh,Amit; Banerjee,Uttam C.
Growth and nitrilase production by recombinant Escherichia coli cells harbouring pET 21 (b) plasmid, for the expression of Pseudomonas putida nitrilase were improved using response surface methodology. Central composite design was used for obtaining ideal concentration of critical medium components which include fructose, tryptone, yeast extract and lactose. The optimal values for the concentration of fructose, tryptone, yeast extract and lactose were found to be 1.13, 2.26, 3.25 and 0.9 % (w/v), respectively. Here, fructose served as carbon source for the growth while lactose was preferably used as inducer for the expression of foreign protein. Yeast extract in the medium was used as a growth promoter while tryptone was added as a major nitrogen source....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biocatalysis; Recombinant E. coli; Nitrilase; Response surface methodology; Central composite design.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000300029

Use of Bioscreen C for growth of Mucor hiemalis in different carbon and nitrogen sources
Provedor de dados: 58
Autores: Tauk-Tornisielo,Sâmia Maria; Vieira,Joelma Maurício; Govone,José Silvio.
The automated Bioscreen C system was used for growth of four Mucor hiemalis strains isolated from the soil in the Juréia-Itatins Ecology Station (JIES), São Paulo state, in liquid culture media containing different carbon (2%) and nitrogen (1%) sources, pH 5.0, at 25ºC, and agitated at 150 rpm for 5 days. The medium containing only one nitrogen source had been added with 2% glucose. The readings were taken at lambda = 540 nm, at 2-hour intervals, up to five days. The results were compared using the Friedman Test (alpha = 5%). The best growth was obtained for strains M1, M2 and M3, reaching the log phase in 60 hours. The best carbon sources varied according to the strain, and yeast extract proved to be the best nitrogen source. Sodium acetate inhibited the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mucor hiemalis; Zygomycetes; Automated systems; Carbon and nitrogen sources.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000100024

Changes in growth, pigment content and antioxidants in the root and leaf tissues of wheat plants under the influence of exogenous salicylic acid
Provedor de dados: 61
Autores: Sahu,Gopal Krishna; Sabat,Surendra Chandra.
The effect of various concentrations of salicylic acid (SA) on the growth, pigment content and the activity of antioxidants was investigated in the laboratory grown wheat plants. The root and shoot growth was affected at higher concentration of SA in early days of growth. The activities of catalase (CAT), ascorbate peroxidase (APX) and guaicol-specific peroxidase (POX) declined with the application of SA (50, 500 and 1000 µM), the decrease being more pronounced with the increase in SA concentrations both in the root and leaf tissues. On the other hand superoxide dismutase (SOD) activity increased with the application of SA. At low concentrations, SA has no effect on the activities of these enzymes in vitro. Salicylic acid at higher concentrations (5- and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidants; Oxidative stress; Salicylic acid; Triticum aestivum L.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202011000300005

Effects of early and late season defoliation on photosynthesis, growth and yield of mustard (Brassica juncea L.)
Provedor de dados: 61
Autores: Khan,N.A.; Lone,P.M.
Mustard (Brassica juncea L.) is characterized by a large number of leaves in the lower layers. These leaves are poorly illuminated, remain below the light compensation point and abscise at maturity. The effects of removing 50 % of all leaves taken from the lower half of the plant at 40 (pre-flowering) or 60 (post-flowering) days after sowing (DAS) were studied on photosynthesis and growth at 80 DAS and on yield at harvest. A comparison of stomatal and mesophyll effects on photosynthesis upon removal of such leaves was also made. Defoliation at 40 DAS resulted in a higher rate of photosynthesis (P N), growth and yield compared to defoliation at 60 DAS or the no defoliation control. The non-significant variation in stomatal limitation (I S), increased...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbonic anhydrase; Dry mass; Stomatal limitation.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202005000100015

Supplemental Ca2+ does not improve growth but it affects nutrient uptake in NaCl-stressed cowpea plants
Provedor de dados: 61
Autores: Guimarães,Francisco Valderez Augusto; Lacerda,Claudivan Feitosa de; Marques,Elton Camelo; Abreu,Carlos Eduardo Braga de; Aquino,Boanerges Freire de; Prisco,José Tarquinio; Gomes-Filho,Enéas.
The growth and nutrient assimilation was evaluated in CaCl2- and CaSO4-supplemented cowpea plants subjected to salt stress (75 mM NaCl). The salinity significantly reduced the cowpea vegetative growth. The addition of CaCl2 in the growth medium did not significantly affect plant growth, while for the CaSO4, the beneficial effects of Ca2+ were moderate. Salinity increased the Na+, K+, Cl-, N and P content in the plants, however it decreased the content of Ca2+ and Mg2+. Increases in Ca2+ concentration in the nutrient solution caused decreases in the Na+ and Mg2+ contents and increases in Ca2+, K+, P, and Cl- contents. The supplemental Ca2+ may alleviate the Na+ toxicity and may improve nutritional and ionic balance in cowpea, but it cannot overcome the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Calcium; Mineral nutrition; Salinity; Vigna unguiculata.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202012000100003

Effects of Fungicides on the Development of the Entomopathogenic Fungus Metarhizium anisopliae var. anisopliae
Provedor de dados: 117
Autores: Yáñez,Maribel; France,Andrés.
Metarhizium anisopliae (Metschnikoff) Sorokin is an entomopathogenic fungus used for controlling different insect pests. It is most frequently applied to berry fruit crops, where fungicides are also used for disease control. Fungicides: azoxystrobin, benomyl, captan, chlorothalonil, fenhexamid, fludioxonil, iprodione, and metalaxyl in concentrations of 0.01, 0.1, 1.0, 10, and 100 mg L-1 were evaluated in this research study. Vegetative growth, conidia germination, and conidia germination tube length were measured on the Qu-M82, Qu-M151b, Qu-M253, Qu-M430, and Qu-M984 Metarhizium anisopliae var. anisopliae fungus strains. Those strains were selected because of their present use against different insect pest in bramble fruits. Vegetative growth was measured...
Tipo: Journal article
Palavras-chave: Biological control; Integrated management; Fungal growth; Conidia germination.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000300006

Physiological Dose-Response of Coffee (Coffea arabica L.) Plants to Glyphosate Depends on Growth Stage
Provedor de dados: 117
Autores: de Carvalho,Leonardo Bianco; Aguiar Alves,Pedro Luis da Costa; Bianco,Silvano; De Prado,Rafael.
Glyphosate is the main herbicide used in coffee (Coffea arabica L.) plantations in Brazil. Problems with herbicide drift commonly occur in orchard fields due to non-adequate spraying conditions. A series of experiments was carried out aiming to evaluate physiological dose-response of C. arabica plants submitted to exposure to simulated glyphosate drift in two distinct plant growth stages. Glyphosate was applied at 0, 180, 360, and 720 g acid equivalent (AE) ha-1 directly on coffee plants with 10 and 45 d after transplanting (DAT). Glyphosate doses in a range of 180-360 g AE ha-1 increased photosynthesis, transpiration and stomatal conductance in 10 DAT-plants up to 14 d after application (DAA) while, in 45 DAT-plants, an increase was observed only up to 2...
Tipo: Journal article
Palavras-chave: N-(phosphonomethyl) glycine; Herbicide drift; Photosynthesis; Plant nutrition.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000200003

Exogenous Application of Polyamines Improves Germination and Early Seedling Growth of Hot Pepper
Provedor de dados: 117
Autores: Aziz Khan,Hammad; Ziaf,Khurram; Amjad,Muhammad; Iqbal,Qumer.
Polyamines are low molecular weight organic compounds involved in diverse range of biological processes in all living organisms. Seed priming is a technique that improves seed performance by rapid and uniform germination with normal and vigorous seedlings. A laboratory study was performed to explore the benefits of seed priming with polyamines on seed germination and seedling growth of hot pepper (Capsicum annuum L.) Hot pepper seeds were primed in aerated solution of putrescine, spermine, or spermidine (25, 50, 75, and 100 mM) for 48 h at 25 ± 2 °C. Significant results (P &lt; 0.05) were observed for different attributes of seed germination and early seedling growth. Polyamines priming resulted in earlier and synchronized germination via improving final...
Tipo: Journal article
Palavras-chave: Seed priming; Capsicum annuum; Polyamines.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000300018

Effects of fruiting spur thinning on fruit quality and vegetative growth of sweet cherry (Prunus avium)
Provedor de dados: 118
Autores: Ayala,Marlene; Andrade,María P.
High density sweet cherry (Prunus avium) orchards using highly productive cultivars and dwarfing rootstocks usually require crop load regulation to achieve high quality fruit. Among the strategies used to reduce crop load in highly productive combinations, fruiting spur thinning (FST, spur extinction) before budbreak has been suggested to be an effective way to improve fruit size. Currently, there is little information about the effect of spur thinning on sweet cherry orchards using self-fertile cultivars grafted on vigorous rootstocks. For this reason, the objective of the present study was to evaluate the effects of manual FST on fruit quality and vegetative growth of the cultivar 'Lapins' grafted on the rootstock 'Mazzard F-12/L with 0, 50 and 75% spur...
Tipo: Journal article
Palavras-chave: Crop load regulation; Fruit growth; Fruit quality; Leaf area; Leaf to fruit ratio; Prunus avium; Shoot growth; Spur extinction.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202009000300011

Responses of young Punica granatum plants under four different water regimes
Provedor de dados: 118
Autores: Bugueño,Felipe; Livellara,Nieggiorba; Varas,Fernando; Undurraga,Pedro; Castro,Mónica; Salgado,Eduardo.
We studied the effect of four irrigation treatments, expressed as fractions (1.3, 1.0, 0.7 and 0.3) of crop evapotranspiration (ETc), on the growth of young pomegranate plants in central Chile (32°32&amp;#8217; S and 71°06&amp;#8217; W). We evaluated the effect of the four treatments on canopy volume (CV) during two growing seasons. For 28 days during the second growing season, we evaluated soil moisture content (0), the soil-moisture depletion factor (p), trunk cumulative growth (TCG), trunk growth rate (TGR) and maximum daily trunk shrinkage (MDS). We found relationships between CV and TCG and between CV and TGR. There were no differences in MDS among the irrigation treatments. We observed significant water stress in plants in the 0.3 ETc treatment (p =...
Tipo: Journal article
Palavras-chave: Dendrometer; Depletion fraction (p); Canopy volume (CV); Maximum daily trunk shrinkage (MDS); Trunk diameter; Trunk growth rate (TGR); Water stress.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000100005

Effects of early fertilization on the performance of Nothofagus dombeyi planted in the Coastal Range of south-central Chile
Provedor de dados: 118
Autores: Donoso,Pablo J; Soto,Daniel P; Schlatter,Juan E; Büchner,Carlos A.
Native Nothofagus dombeyi growth rates excel in secondary forests and in some plantations, and the species has good timber quality. However, few have reported on the effects of fertilization on N. dombeyi plantations. This is a key matter since fertilization has environmental and financial costs, and therefore its use to increase growth and survival for production or restoration must be carefully evaluated. Here we evaluated the early effects of fertilization (control and three levels) using several performance variables (leaf properties, growth, plant quality, and survival) in a N. dombeyi plantation at a low elevation in the Coastal Range of south-central Chile, which has a rainy temperate climate and medium fertility soils. Four years after plantation...
Tipo: Journal article
Palavras-chave: Fast-growing tree species; Hardwood plantations; Mineral nutrition; Plant quality; Survival.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202009000300014

Low water hardness and pH affect growth and survival of silver catfish juveniles
Provedor de dados: 65
Autores: Copatti,Carlos Eduardo; Garcia,Luciano de Oliveira; Kochhann,Daiani; Cunha,Mauro Alves da; Becker,Alexssandro Geferson; Baldisserotto,Bernardo.
The objective of this study was to investigate the effects of exposure to low water hardness (0, 25 and 50mg CaCO3L-1) into the 6.0-8.0 pH range to silver catfish juveniles (Rhamdia quelen) survival and growth after 32 days. Juveniles kept at zero water hardness presented higher mortality at pH 7.0 and 8.0 than those submitted to other treatments. Weight of juveniles exposed to pH 6.0 and zero water hardness was significantly higher than those kept at the same water hardness and other pH. Survival and growth of juveniles exposed to 25 and 50mg CaCO3 L-1 was not affected in the 6.0-8.0 pH range. Therefore, the best water hardness for silver catfish juveniles growth is 25-50mg CaCO3 L-1 and at low water hardness (next zero) pH must be reduced.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acidic water; Alkaline water; Calcium; Growth; Mortality; Rhamdia quelen.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000800030

In vitro establishment of  Comanthera curralensis , "sempre viva" native of Chapada Diamantina - Bahia
Provedor de dados: 65
Autores: Albuquerque,Mara Márcia Sampaio; Brito,Alone Lima; Lima,Andressa Priscila Piancó Santos; Alvim,Bruno Freitas Matos; Santana,José Raniere Ferreira de.
ABSTRACT: The goal of the present study was to evaluate the germination, initial growth, and in vitro co-cultivation of  Comanthera curralensis Moldenke, a "sempre viva" native of the Chapada Diamantina state of Bahia. Full strength (MS) and half-strength MS (MS1/2) growth media supplemented with two different sucrose concentrations (15 and 30g L-1) were tested for germination and initial plant growth. Three different plant densities were tested by in vitro culture (8, 10 and 12 plants per container). MS1/2 medium with 15g L-1 sucrose resulted in a higher percentage of germination and plant growth for the in vitro establishment of C. curralensis. The use of 12 plants per container is indicated for cost reduction in C. curralensis in vitro production.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eriocaulaceae; Tissue culture; Germination; In vitro growth; Co-cultivation.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000600991

Dietary soybean meal on growth and intestinal morphology of South American catfish, Rhamdia quelen, larvae
Provedor de dados: 65
Autores: Hernández,David Roque; Santinón,Juan José; Sánchez,Sebastián; Domitrovic,Hugo Alberto.
The effects of the replacement of bread yeast by soybean meal in diets for Rhamdia quelen larvae on growth, survival, and intestinal morphology were analysed. Larvae were fed for 20 days with five diets: a control diet formulated with 57% of bread yeast, and other four diets in which soybean meal at concentrations of 14.25, 28.5, 42.75 and 57% was added to obtain 25, 50, 75 and 100% of bread yeast replacement. Growth and survival parameters were negatively affected by dietary soybean meal inclusion. Larvae fed control diet showed significantly higher mean weight, specific growth rate, final biomass, and survival rate than larvae from other treatments. Enterocyte height and fold width of the posterior intestine showed highest values in the control group,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Larviculture; Experimental diet; Intestine; Morphology; South American catfish.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782012000900023

Sugarcane micropropagation using light emitting diodes and adjustment in growth-medium sucrose concentration
Provedor de dados: 65
Autores: Rocha,Paulo Sérgio Gomes da; Oliveira,Roberto Pedroso de; Scivittaro,Walkyria Bueno.
The aim of this research was to evaluate the use of light emitting diodes (LEDs) instead of white fluorescent lamps as light source and adequate growth-medium sucrose concentration for sugarcane micropropagation (Saccharum officinarum L.). Sugarcane (RB 872552 variety) bud explants were evaluated during the multiplication and rooting phases under controlled growth-room conditions. Different light sources (blue, red and green LEDs; Growlux and white fluorescent lamps) and different medium sucrose concentrations (0; 15; 30 and 45g L-1) were used, maintaining constant light intensity (20µmol m-2 s-1), photoperiod (16h) and temperature (25+2°C). The experiment was a completely randomized design, and treatments were arranged in a 5x4 factorial (five light...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum officinarum; LED; Light source; Tissue culture; White fluorescent lamp.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013000700005

Growth of silver catfish ( Rhamdia quelen ) exposed to acidic pH at different humic acid levels
Provedor de dados: 65
Autores: Costa,Silvio Teixeira da; Sutili,Fernando Jonas; Gressler,Luciane Tourem; Loebens,Luíza; Colpo,Carine Vargas; Lazzari,Rafael; Baldisserotto,Bernardo.
ABSTRACT: Humic substances are organic compounds that possess high molecular weight and are formed by the decomposition of plant materials. Humic substances comprise humic acids, fulvic acids and humin. Humic acids (HA) have shown to be able to provide some protection to biological membranes of fish in water with low pH, replacing the protective action of Ca2+. Thus, this studyaimed to observe growth of silver catfish ( Rhamdia quelen ) juveniles exposed to pHs 5.5 and 6.5 and to different levels of HA: 0, 10, 25 and 50mg L-1. Results showed that, irrespective of pH, HA was highly detrimental to silver catfish growth, since the higher the concentration of HA, the lower the weight gain and feed intake, resulting in lower biomass and lower specific growth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Humic substance; Water pH; Fish growth; Organic carbon.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000601094

Growth and yield of anthurium in response to gibberellic acid
Provedor de dados: 65
Autores: Lima,Juliana Domingues; Ansante,Nathalia Felipe; Nomura,Edson Shigueaki; Fuzitani,Eduardo Jun; Silva,Silvia Helena Modenese-Gorla da.
Gibberellic acid (GA3) induces flowering of plants of various genera of the Araceae family. Therefore, it was evaluated the effect of GA3 on the growth and yield of Anthurium andraeanum cv. 'Apalai'. For this purpose, micropropagated seedlings were planted in nursery beds under 70% shade. The experimental design was completely randomized in subdivided plots with eight replications. The growth regulation effect was assessed in each plot and the time to flowering after the start of the treatments was assessed in each subplot. The GA3 concentrations were 0, 150, 300, 450 and 600mg L-1, applied every 60 days by spraying on the leaves. The applications and evaluations started after the production of marketable floral stems. Every month the number of leaves was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anthurium andraeanum Linden ex André; Gibberellin; Growth regulator; Flowering.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000801327

Physiological responses of rabbits fed with diets containing rapeseed meal, white lupine and pea seeds as soybean meal substitutes
Provedor de dados: 64
Autores: Gugołek,Andrzej; Juśkiewicz,Jerzy; Kowalska,Dorota; Zwoliński,Cezary; Sobiech,Przemysław; Strychalski,Janusz.
ABSTRACT In recent years, a trend has emerged to eliminate soybean meal (SBM) from rabbit diets. It was hypothesized that a dietary mixture composed of rapeseed meal (RSM), white lupine seeds (WLS) and pea seeds (PS) could be a substitute for SBM in diets for growing rabbits without compromising their growth and physiological parameters. To verify this hypothesis, selected parameters describing the growth rate of rabbits, their blood and slaughter parameters and caecum function were analyzed. The experiment was performed on ninety HYPLUS rabbits. Control group (C) animals were fed a diet containing 15% SBM. The diet administered to the first experimental group (E1) contained 7.5% SBM, 5.0% RSM, 4.0% WLS and 3.0% PS. In the diet fed to the second...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rabbit feeding; Growth performance; Blood parameters; Gut function.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542018000300297

Growth of Brachiaria decumbens in Latosol contaminated with copper
Provedor de dados: 64
Autores: Silva,Ilmo Correia; Rocha,Cleonice; Rocha,Mariella Camargo; Sousa,Cleiton Mateus.
ABSTRACT Brachiaria decumbens presents high rusticity, rapid growth, as well as easy implantation and management. The aim of the study is to evaluate the growth of brachiaria in soil contaminated with copper. An experiment following a 3 x 4 factorial design was carried. It comprised three plant ages (30, 45 and 60 days after transplanting) and four copper concentrations (0, 20, 40 and 80 mg of Cu per kg of soil). Plant age and copper concentrations have influenced the main pseudostem length, the number of leaves, as well as the leaf area, chlorophyll (SPAD), fresh and dry shoot matter, root system volume, and fresh and dry root system matter of plants. The lowest dry shoot matter accumulation was found at the concentration 51.24 mg Kg-1. The herein...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adsorption; Cerrado; Phytoremediation; Heavy metal.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542018000200168

Age determination and reproduction of female Fin Whales Balaenoptera physalus (Linnaeus, 1758), with special regard to baleen plates and ovaries
Provedor de dados: 16
Autores: Utrecht-Cock, C.N. van.
1. From Antarctic female Fin Whales, Balaenoptera physalus, a collection, consisting of baleen plates and the parts of these plates embedded in the gum, ovaries, and a number of earplugs was examined, in order to determine the age of these animals and to get a better insight in some characteristics of their reproduction. Data concerning pregnancy and lactation were also recorded. The material was sampled from animals worked up on board the f.f. “Willem Barendsz” during the Antarctic seasons 1953/1954 to 1959/1960 inclusive. The possibilities and values of age determination for this species were considered, based on the results of the analyses of the above material. 2. In most seasons the length distribution of the female Fin Whales, from which the material...
Tipo: Article / Letter to the editor
Ano: 1965
URL: http://www.repository.naturalis.nl/record/504146

Crecimiento y rendimiento de especies arbóreas en una plantación de enriquecimiento de acahuales en el sur de Oaxaca
Provedor de dados: 32
Autores: Galán Larrea, Rolando.
Para muchas especies arbóreas en áreas de clima cálido húmedo no existe información del crecimiento y su periodicidad, así como de su rendimiento maderable, lo cual impide un buen manejo de los bosques en gran parte del trópico. Por lo anterior, se estudió el crecimiento y su periodicidad en Cedrela odorata L., Tabebuia rosea (Bertol.) DC, T. donnell-smithii Rose y Cordia alliodora (Ruíz  &amp; Pav.) Oken. en una plantación de enriquecimiento de acahuales en el sur de Oaxaca, México. Para evaluar el crecimiento a nivel árbol se midieron los cambios en diámetro a través de bandas dendrometricas para 32 individuos de C. odorata, seis de T. rosea, siete de T. donnell-smithii y nueve de C. alliodora; además, se analizaron macroscópicamente secciones...
Tipo: Tesis
Palavras-chave: Bandas dendrométricas; Características de la pendiente; Posición de copa; Anillos de crecimiento; Estacionalidad en la precipitación; Sistema de crecimiento y rendimiento; Maestría; Forestal; Dendrometer bands; Slope characteristics; Crown position; Growth rings; Rain seasonality; Growth and yield system.
Ano: 2007
URL: http://hdl.handle.net/10521/1570

Influence of 2,4-D and BAP on callus growth and the subsequent regeneration of somatic embryos in long-term cultures of Pelargonium x domesticum cv. Madame Layal
Provedor de dados: 69
Autores: Haensch,Klaus-Thomas.
This long-term study demonstrates for the first time that it is possible to propagate embryogenic cultures in pelargoniums and to subsequently initiate the differentiation of embryos using the cultivar Madame Layal (Pelargonium x domesticum). Propagation of callus was only possible with combinations of 2,4-dichlorophenoxyacetic acid (2,4-D) and 6-benzylaminopurine (BAP), which gave rise to embryos from the primary culture stage on. However, the propagation of cells, as well as the differentiation of embryos, was inhibited by a continuous application of these growth regulators. For this reason, a long period on medium lacking growth regulators was necessary before the differentiation of embryos occurred again. The consequences for improving the propagation...
Tipo: Journal article
Palavras-chave: Auxin; Cytokinin; Propagation; Somatic embryogenesis.
Ano: 2007
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582007000100007

Production of Rhodotorula glutinis: a yeast that secretes alpha-L-arabinofuranosidase
Provedor de dados: 69
Autores: Martínez,Claudio; Gertosio,Cecilia; Labbe,Angelica; Pérez,Rafael; Ganga,Maria Angélica.
Rhodotorula glutinis is a yeast that secretes the enzyme alpha-L-arabinofuranosidase (E.C. 3.2.1.55) into the culture medium and thus has an interesting biotechnological potential. To determine improved culture conditions of this organism, different factors of the culture media were evaluated such as the use of peptone as nitrogen source, salts composition, pH and growth temperature. Likewise, beet molasses and beet cosette were tested as industrial carbon sources to induce the production of the enzyme and how they influence the yeast growth. Based on these studies a culture medium is proposed for growth of this yeast in a continuous system. By assaying different dilution rates an average specific activity for the enzyme of 82.4 U/mg of protein was obtained.
Tipo: Journal article
Palavras-chave: Alpha-L-arabinofuranosidase yeast; Enzymes; Wine.
Ano: 2006
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000400009

Tilapia chromosomal growth hormone gene expression accelerates growth in transgenic zebrafish (Danio rerio)
Provedor de dados: 69
Autores: Morales,Reynold; Herrera,María Teresa; Arenal,Amílcar; Cruz,Asterio; Hernández,Oscar; Pimentel,Rafael; Guillén,Isabel; Martínez,Rebeca; Estrada,Mario P.
Gene transfer is economically important and model fish species has produced a great impact in modern biology and biotechnology. Transgenic zebrafish (Danio rerio) were generated through the co-injection of a GFP-expressing plasmid and an "all fish" transgene composed by the carp beta-actin promoter and the chromosomal tilapia (Oreochromis hornorum) growth hormone gene. The GFP expression was a good indicator of stable transformation and allowed for high efficiency selection of transgenic fish. Transgenic F1 zebrafish grew 20% faster than full sibling non-transgenic controls.
Tipo: Journal article
Ano: 2001
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582001000200004

Growth promotion of Pinus radiata seedlings by soil inoculation and seed pretreatment with the biological control agent Clonostachys rosea
Provedor de dados: 73
Autores: Moraga-Suazo,Priscila; Sanfuentes,Eugenio.
ABSTRACT Twenty-one Clonostachys rosea strains, previously selected by its biocontrol activity higher than 80% against Fusarium circinatum, were evaluated for its ability to promote growth of Pinus radiata seedlings on natural substrate. Stem height, root length, dry weight of stem and roots, and ectomycorrhization were measured at 102 days after seeding. The results showed significant differences between some of the tested C. rosea strains when compared to the controls, showing increases for plant height of 25%, dry stem mass of 37%, root length of 13.5%, dry root mass of 20.5% and ectomycorrhization of 55% when compared to their respective controls, demonstrating a possible dual use of these strains for both plant protection and increased biomass of P....
Tipo: Journal article
Palavras-chave: Biocontrol agents; Biofertilizers; Growth promoters; Nurseries.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432017000100140

Genetic and epigenetic effects of salinity on in vitro growth of barley
Provedor de dados: 74
Autores: Demirkiran,Aykut; Marakli,Sevgi; Temel,Aslihan; Gozukirmizi,Nermin.
Morphological, physiological and molecular changes were investigated in in vitro salt-stressed barley (Hordeum vulgare L. cv. Tokak). Mature embryos were cultured in Murashige and Skoog medium containing 0 (control), 50 and 100 mM NaCl for 20 days. Both concentrations inhibited shoot growth, decreased fresh weight and protein content, and increased SOD (EC 1.15.1.1) activity in a dose-dependent manner. The lower concentration increased root growth. Salinity caused nucleotide variations in roots, but did not affect shoot DNAs. The higher concentration caused methylation changes, mainly hypermethylation in shoots. This is the first study on genetic and epigenetic effects of salinity in barley.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hordeum vulgare; Salt stress; Tissue culture; RAPD; CRED-RA.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572013000400016

Effect of amikacin, cephalothin, clindamycin and vancomycin on in vitro fibroblast growth
Provedor de dados: 74
Autores: Souza,Fernanda Timm Seabra; Mello,Alexandre Silva de; Michelin,Kristiane; Coelho,Janice Carneiro.
The effect of four antibiotics (amikacin, clindamycin, cephalothin and vancomycin) was investigated considering that bacterial infection in fibroblasts cultures is a very frequent event. The investigation included the effect of the antibiotics on fibroblast growth and on the activity of the enzyme glucocerebrosidase. The antibiotics were added to the fibroblast cultures and cell growth was evaluated by counting the number of cells and their viability. After cell harvesting, the enzyme activity and content of protein were measured. The results allowed us to conclude that none of the antibiotics affected the cellular number nor the cellular viability. The content of protein decreased when cephalothin and clindamycin were added to the cultures, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amikacin; Cephalothin; Clindamycin; Vancomycin; Fibroblasts; Cell culture.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572004000300023

Birth weight of twins: 1. The fetal growth patterns of twins and singletons
Provedor de dados: 74
Autores: Beiguelman,Bernardo; Colletto,Gloria M.D.D.; Franchi-Pinto,Carla; Krieger,Henrique.
Distributions of birth weights of twins and singletons born at three southeastern Brazilian hospitals were compared after adjustment for gestational age, its quadratic and cubic terms, sex, type of pregnancy, as well as their interactions. The pattern of twin fetal growth rate was retarded in comparison to that of singletons, regardless of the socioeconomic level of the examined population, but the gestational age at which this retardation started seems to be correlated to the income of the mothers. In all cases, after 28 weeks of gestation, female fetal growth was slightly but consistently lower than that of males.
Tipo: Info:eu-repo/semantics/article
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47571998000100025

Регулирующее действие органических веществ на рост и фотосинтез планктонных водорослей в культурах.
Provedor de dados: 13
Autores: Кондратьева Т. М.
Low-concentrations (0.1-0.3 mg *l-1) of glucose and hydrolyzate are found to render a strong regulating action 15-36.8% on the algae growth and photosynthesis. Depending on the combination of a substrate concentration and light intensity, this action could be both negative and positive. The highest stimulating effect on both of these processes was observed in low light intensity variants (2.6-7.6 thou. lux). Alongside with, this certain species were marked to have second maximum in growth and photosynthesis rates associated with bright illumination (36-45 thou. lux). The response of different phytoplanktonic species to addition of one and the same substance, and the response of the same species to substrates of different chemical nature were different,...
Tipo: Journal Contribution
Ano: 1982
URL: http://repository.ibss.org.ua/dspace/handle/99011/2324

Оптимизация роста Spirulina platensis в проточной культуре.
Provedor de dados: 13
Autores: Лелеков, А. С.; Скляренко, С. Ю.; Геворгиз, Р. Г.
Проведена оптимизация роста Spirulina platensis (Nordst.) Geitl. в квазинепрерывной культуре при различных удельных скоростях протока. Показано, что величина максимального урожая достигается при использовании режима культивирования с максимальной удельной скоростью протока и включением протока в начале линейной фазы роста. Продемонстрировано преимущество проточного метода культивирования по сравнению с накопительным. http://biotex.ibss.org.ua/
Tipo: Journal Contribution
Ano: 2005
URL: http://repository.ibss.org.ua/dspace/handle/99011/920

Сезонные изменения удельной скорости роста фитопланктона и его потребления микрозоопланктоном в прибрежных водах Чёрного моря
Provedor de dados: 13
Autores: Стельмах, Л. В.
For the first time for the Black Sea it is shown that within a year the maximum concentration of chlorophyll a were observed in the periods when the difference between phytoplankton growth and microzooplankton grazing reached the largest values.
Tipo: Book Section
Palavras-chave: Phytoplankton; Specific speed of growth; Consumption of phytoplankton; Microzooplankton; Biogenic matters; Black sea.
Ano: 2010
URL: http://repository.ibss.org.ua/dspace/handle/99011/1891

Динамика содержания гидрокарбонатов и карбонатов В среде Заррука при выращивании микроводоросли  Spirulina platensis (Nordst.) Geitler в накопительной культуре
Provedor de dados: 13
Autores: Бородина, А. В.
Приводятся данные о карбонатном равновесии в среде Заррука, приготовленной на основе двух различных солей - NaНCO3 и Na2CO3, при выращивании водоросли Spirulina platensis. Приведены ростовые характеристики микроводоросли и ее средняя продуктивность в период максимального роста на данных средах.
Tipo: Journal Contribution
Palavras-chave: Dynamics.
Ano: 2002
URL: http://repository.ibss.org.ua/dspace/handle/99011/391

Дыхание тканей некоторых морских беспозвоночных
Provedor de dados: 13
Autores: Виленкина М. Н.
The respiratory rates of various tissues and of an intact animal in Actinia equina L., Nereis diversicolor (O. F. Muller), Mytilus galloprovincialis Lam., Rapana thomasiana Crosse, Carcinus maenas L., Xanto hydrophilus Herbst. were studied, and allometric growth of these species was investigated. A significant correlation was observed between the rate of tissue respiration and the weight of body and tissue. The changes in the rate of tissue respiration can be described by exponential equations, the coefficients of equations being different for different tissues. The changes in the summed respiration of all tissues in an animal with the increase of the body weight are similar qualitatively to the changes of the respiration in the intact animal. It was shown...
Tipo: Journal Contribution
Ano: 1968
URL: http://10.0.0.194:8080/dspace/handle/99011/3021

Relative growth of Uca burgersi (Crustacea, Ocypodidae) from two mangroves in the southeastern Brazilian coast
Provedor de dados: 76
Autores: Benetti,Aline Staskowian; Negreiros-Fransozo,Maria Lucia.
The relative growth of the fiddler crab Uca burgersi Holthuis, 1967 was analyzed in two populations from different mangroves (Ubatumirim and Cavalo rivers) in the southeastern Brazilian coast, monthly sampled from May, 2001 to April, 2002. The population from a high productivity level mangrove reaches the sexual maturity in larger sizes than the population from a less productive site. This results can be attributed to the greater amount of nutrients found in the Cavalo than in Ubatumirim mangrove.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Relative growth; Uca; Size maturity; Mangrove.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212004000100012

Effects of spawning patterns and larval mortality on survival to the juvenile stage : a modelling analysis on the anchovy population of the Bay of Biscay
Provedor de dados: 5
Autores: Huret, Martin; Petitgas, Pierre; Struski, Caroline.
Fish populations show complex life cycles with successive dependent life stages, the spatio-temporal patterns of distribution at one stage impacting distribution, growth and mortality during the next stage. Here we propose to assess the relative effect of spawning (timing, duration, fecundity and spatial distribution, resulting from adult environmental conditions over autumn and winter) and larval mortality on the resulting survival at the age of metamorphosis. We used a suite of models run sequentially : a coupled physical-biogeochemical model to provide the environmental forcing, a Dynamic Energy Budget (DEB) model for adult fish growth and reproduction (spawning timing, duration and fecundity), an Individual Based Model (IBM) for larval drift, growth...
Tipo: Text
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00023/13451/10464.pdf

A length-structured spatially explicit model for estimating hake growth and migration rates
Provedor de dados: 5
Autores: Drouineau, Hilaire; Mahevas, Stephanie; Bertignac, Michel; Duplisea, Daniel.
Drouineau, H., Mahevas, S., Bertignac, M., and Duplisea, D. 2010. A length-structured spatially explicit model for estimating hake growth and migration rates. - ICES Journal of Marine Science, 67: 1697-1709.
Tipo: Text
Palavras-chave: Growth; Length-structured model; Merluccius merluccius; Migration; Spatial model.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00016/12714/9767.pdf

Une technique de lecture d'age des raies
Provedor de dados: 5
Autores: Du Buit, M; Maheux, F.
Description of a technique for including and preparing small cross sections of ray vertebra. The observation of the rings growth is performed after staining with cobalt nitrate and safranine. This method is applied to the observation of the growth rings in the vertebra of Raja naevus.
Tipo: Text
Palavras-chave: Raja naevus; Staining; Growth; Vertebrae; Age determination.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/publication-1792.pdf

Automatic morphological detection of otolith nucleus
Provedor de dados: 5
Autores: Cao, Frédéric; Fablet, Ronan.
This paper deals with the automation of the acquisition of age and growth data from the analysis of otolith images. One of the key component of such it system is the automatic detection of the growth center, which serves as the basis for further processing (2D ring segmentation, age and growth estimation,...). To this end, we develop a new and well-founded approach combining a morphological analysis of image level sets to the a contrario, detection principle. This approach leads to a robust parameterless scheme, whose efficiency is demonstrated by an evaluation carried out for a set of several hundred of plaice otoliths. (c) 2005 Elsevier B.V. All rights reserved.
Tipo: Text
Palavras-chave: Otolith imaging; A contrario detection; Mathematical morphology.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1223.pdf

Growth performance and detoxification of mussels cultured in a fjord enhanced by forced upwelling of nutrient rich deep water (GATE)
Provedor de dados: 5
Autores: Strohmeier, Tore; Strand, Øivind; Aure, Jan; Duinker, Arne; Alunno-bruscia, Marianne; Erga, Svein Rune; Rosland, R.; Naustvoll, Lars.
Objectives The objective of the study is to assess how phytoplankton composition and quantity enhanced by forced upwelling of nutrient rich deep water in a fjord affects growth performance and detoxification in cultured mussels. Sub goals are: 1. monitor the fjord environment and succession of phytoplankton including toxic algae, 2. contrast feeding and growth performance in mussels affected and unaffected by the enhanced phytoplankton assemblage forced by upwelling of nutrient rich deep water, 3. estimate elimination rate of algae toxins in mussels introduced to enhanced phytoplankton concentration forced by upwelling of nutrient rich deep water.
Tipo: Text
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00033/14376/11666.pdf

Croissance de la coquille saint-jacques (pecten maximus L.) en rade de brest et en baie de saint-brieuc
Provedor de dados: 5
Autores: Buestel, Dominique; Laurec, Alain.
The growth from year to year has been described by a Von Bertalanffy curve. This curve must be modulated in order to represent the winter growth stopping. The growth of the younger (fixed) animals fits the general curve only for the animals born in july or august. [NOT CONTROLLED OCR]
Tipo: Text
Palavras-chave: Histoire Ifremer.
Ano: 1975
URL: http://archimer.ifremer.fr/doc/1975/publication-5093.pdf

About frame estimation of growth functions and robust prediction in bioprocess modeling
Provedor de dados: 5
Autores: Krichen, Emna; Rapaport, A.; Fouilland, Eric.
We address the problem of determining functional framing from experimental data points in view of robust time-varying predictions, which is of crucial importance in bioprocess monitoring. We propose a method that provides guaranteed functional bounds, instead of sets of parameters values for growth functions such as the classical Monod or Haldane functions commonly used in bioprocess modeling. We illustrate the applicability of the method with bioreactor simulations in batch and continuous mode, as well as on real data. We also present two extensions of the method adding flexibility in its application, and discuss its efficiency in providing guaranteed state estimations.
Tipo: Text
Palavras-chave: Functional estimation; Interval observers; Growth functions; Least square.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00609/72149/73205.pdf

Growth of blue mussels in a Norwegian and French culture site: comparison of food proxies with Dynamic Energy Budgets (DEB)
Provedor de dados: 5
Autores: Alunno-bruscia, Marianne; Rosland, Rune; Strand, Øivind; Naustvoll, Lars; Robert, Stephane; Bacher, Cedric.
Introduction The blue mussel (Mytilus edulis) culture occurs in temperate waters around the world under a wide range of environmental conditions, e.g. at phytoplankton concentrations below as 1-2 µg L-1 (in Norwegian fjords) up to 9-10 µg L-1 (in French Atlantic coastal sites). Under such contrasted food resources, the aim of our study is to develop a generic bio-energetic model for M. edulis, i.e. that can be applied in various contrasted environments with a constant set of parameters, to simulate growth and reproduction of the blue mussel. Such a model will allow us to assess directly the links between mussel growth performances and environmental parameters in different culture sites.
Tipo: Text
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00032/14362/11664.pdf

Bases génétiques des caractères physiologiques impliqués dans la croissance chez l'huître creuse Crassostrea gigas (Thunberg)
Provedor de dados: 5
Autores: Collet, Bertrand.
Growth is a very important trait in the oyster Crassoslrea gigas both from an economical and scientific point of view. Many questions remain unanswerable or are still discussed . From a hatchery-based population, the constancy in time of growth performances From larval to adult stage was studied. The influence of physiological parameters (energy acquisit ion and expenditure) and parentage on growth was estimated. ln the literature, the relationship between larval growth and post-Iarval growth is debated . Our study shows that the larval growth is positively correlated with the post-Iarval growth. This result validates the hatchery practices consisting in culling the small larvae. The growth performances are stable over the time and show no compensation....
Tipo: Text
Palavras-chave: Crassostrea gigas; Croissance; Physiologie; Analyse de parenté; Microsatellite DNA; Crassostrea gigas; Growth; Physiology; Parentage analysis; Microsatellite DNA.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/00108/21939/19532.pdf

Bilan des connaissances sur la cardine (Lepidorhombus whiffiagonis ). Etude du stock de Mer Celtique.
Provedor de dados: 5
Autores: Aubin-ottonheimer, G.
This study presents the biology of the species Lepidorhombus whiffiagonis (ecology, nutrition, sexuality, growth weight and length) and its exploitation with the balance of catches in North Atlantic and its fishing in Celtic Sea. Yield and fecundity per recruit related to the fishing effort are estimated. The influence of the mesh size modifications is analyzed. The impact of uncertainty on the values of the parameters modelling and individual variability within the growth is analyzed.
Tipo: Text
Palavras-chave: Growth; Stock assessment; Fishery management; Fishery biology; Synopsis.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/publication-1782.pdf

Integrating a sequence of models over different life stages to predict the response of fish populations to environmental drivers : anchovy in the Bay of Biscay
Provedor de dados: 5
Autores: Huret, Martin; Petitgas, Pierre; Struski, Caroline.
Fish populations show complex life cycles with successive dependent life stages, the spatio-temporal patterns of distribution at one stage impacting distribution, growth and mortality during the next stage. Here we propose to assess the relative effect of spawning (timing, duration, fecundity and spatial distribution, resulting from adult environmental conditions over autumn and winter) and larval mortality on the resulting survival at the age of metamorphosis. We used a suite of models run sequentially: a coupled physical-biogeochemical model to provide the environmental forcing, a Dynamic Energy Budget (DEB) model for adult fish growth and reproduction (spawning timing, duration and fecundity), an Individual Based Model (IBM) for larval drift, growth and...
Tipo: Text
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00023/13449/10461.pdf

Postnatal Variation of Limb Bones in the Japanese Quail, Coturnix coturnix japonica
Provedor de dados: 77
Autores: Ren,Yaru; Wang,Huan; Zhang,Zihui.
Changes in body size over ontogeny may influence the ontogenetic development of long bones, and thus important to our understanding of variation in morphological, physiological, and life-history traits within species. In this study, we sample the entire measurements of the Japanese quail (Coturnix coturnix japonica) of individual skeletons, to investigate the ontogenetic allometry of limb bone proportions by Reduced Major Axis (RMA) regression. The ulna and humerus were both positively allometric in relation to body mass, with their proximal ends growth more rapidly than other regions. Hindlimb bones exhibited more than one allometric pattern. The tarsometatarsus was negative; the femur presented positive allometry, with the width and depth of the proximal...
Tipo: Journal article
Palavras-chave: Ontogenetic allometry; Forelimb; Hindlimb; Japanese quail; Precocial.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000200045

Notes on three common species of madreporarian corals known as: Caryophyllia smithi, Caryophyllia clavus, Coenocyathus Dohrni
Provedor de dados: 16
Autores: Best, Maya B.
During five months of fieldwork, mainly carried out in Banyuls-sur-Mer (Pyrénées Orientales), but also in Marseille and Roscoff (Brittany), the systematics and ecology of the madreporarian corals were studied, especially of the species. Caryophyllia smithi Stokes &amp; Broderip, 1828, Caryophyllia clavus Scacchi, 1835, and Coenocyathus dohrni Döderlein, 1913. Observation of these animals in their own environment gave an explanation of the different growth-forms within a species, which were formerly regarded as of specific importance. I did come to the conclusion that Caryophyllia clavus is a synonym of C. smithi. The species C. smithi has two growth-forms depending on some ecological data (depth, water movement, substrate): var. smithi and var. clavus. A...
Tipo: Article / Letter to the editor
Ano: 1968
URL: http://www.repository.naturalis.nl/record/504206

Anatomical characteristics of some woody plants of the Angmagssalik District of Southeast Greenland
Provedor de dados: 16
Autores: Miller, Howard J.
Ten species are represented by the 40 wood specimens collected in 1969 from the Angmagssalik District of S.E. Greenland. Information concerning collection localities, diameter of wood specimens, number and breadth of growth rings and eccentricity is given. A comparison of growth ring observations is made with those made by Kruuse (1912), in three species from the same area, in relation to their growth form and environment. An anatomical description of the wood of the 10 species has been made together with an evaluation of some of the anatomical characteristics. Trends towards a modification of the wood due to environmental factors are indicated, but the fact that caution must be exercised when carrying out such an investigation is stressed, with special...
Tipo: Article / Letter to the editor
Ano: 1975
URL: http://www.repository.naturalis.nl/record/535136

A Meta-analysis of Studies on Plant Growth Rate and Allocation to Roots and Shoots
Provedor de dados: 17
Autores: Daniel R. Taub.
I performed a meta-analysis of studies examining the relationships among nutrient availability, plant growth rate and allocation to roots vs. shoots. Species characteristic of high fertility habits grew faster than species characteristic of less fertile habitats. While species were highly plastic in root/shoot ratio, there was a strong correlation in root/shoot across fertility levels when plants were grown across fertility gradients. This suggests that the proportional mass allocation to roots is a consistent characteristic of individual species relative to other species. There was no consistent relationship between allocation to roots and either growth rate or the fertility of habitats that species typically are found in.
Tipo: Manuscript
Palavras-chave: Ecology; Plant Biology.
Ano: 2007
URL: http://precedings.nature.com/documents/185/version/1

It is better than you think: fluid intelligence across the lifespan
Provedor de dados: 17
Autores: Tracy Packiam Alloway; Ross Alloway.
The growth and decline of fluid intelligence is associated with brain structural changes. For example, development of fluid IQ is associated with cortex thickness during the critical period between 6 to 12 years old. On the other end of the lifespan, poor performance in cognitive functioning is attributed to a decrease of frontal gray matter density in elderly populations. In particular, there is a sharp decline in fluid IQ scores after 65 years of age. There is substantial evidence that working memory and fluid intelligence (Gf) share neural substrates, such as the prefrontal and parietal cortices. However, very little research has examined whether the pattern of growth and decline in working memory mirrors that of fluid intelligence. For example, does...
Tipo: Manuscript
Palavras-chave: Evolutionary Biology.
Ano: 2010
URL: http://precedings.nature.com/documents/4655/version/1

IN VITRO GROWTH INHIBITORY EFFECTS OF COMBINED APPLICATIONS OF CLOTRIMAZOLE, KETOCONAZOLE, AND CLODINAFOP-PROPARGYL ON EQUINE BABESIA PARASITES
Provedor de dados: 19
Autores: Bork, Sabine; Yokoyama, Naoaki; Okamura, Masashi; Igarashi, Ikuo; 横山, 直明; 五十嵐, 郁男.
Recently，we reported the in vitro growth inhibitory effects of the imidazole derivatives，clotrimazole(CLT) and ketoconazole (KC)，and the herbicide，clodinafop-propargyl(CP)，against bovine and equine Babesia parasites. Additionally，in the bovine species，several combined applications of the CLT，KC，and CP were reported to significantly increase the inhibitory effects. In this study，similar combination tests were carried out in order to confirm possible synergistic effects in the equine species，Babesia caballi and Babesia equi. Combinations of CLT/KC， CLT/CP，and CLT/KC/CP exerted a significantly enhanced growth inhibitory efficacy in B. caballi，in contrast to B. equi，where no synergistic effects were observed in any of the combinations. Our results suggest that...
Palavras-chave: In vitro; Babesia; Clotrimazole; Ketoconazole; Clodinafop-propargyl.
Ano: 2003
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/637

好冷性雪腐大粒菌核病菌Sclerotinia borealisの好乾的環境下での寒天培養における菌糸の成長
Provedor de dados: 19
Autores: 波川, 啓土; 渡辺, 剛志; 斉藤, 泉; 髙澤, 俊英; NAMIKAWA, Yoshitada; WATANABE, Tsuyoshi; SAITO, Izumi; TAKASAWA, Toshihide.
Potato dextrose agar (PDA) 培養に於いて, 好冷性雪腐大粒菌核病菌S. borealis の菌糸成 長は菌糸を移植した場合でも菌核を移植した場合でも同じように, 0.25M 及び0.5M D-マンニトー ルを添加することによって著しく促進された｡促進効果については菌糸を培養した場合の方が, 菌 核を培養した場合に較べて, より大きかった｡単位面積当たりのPDA 培地量に対する成長の早さ については, 培地量が多い場合(20mL) の方が少ない場合(10mL) に比べて成長の速度がより早かった｡ Growth of psychrophilic snow mold Sclerotinia borealis on the potato dextrose agar (PDA) culture was remarkably promoted by adding 0.25M and also 0.5M D-mannitol, either when the sclerotium was transplanted and when the hypha was innoculated. The promoting effect was greater when the hypha was cultivated than in the case in which the sclerotium was cultivated. The growth speed for PDA medium quantity per unit area where the medium volume was large (20mL) was faster than the case of small amount...
Palavras-chave: 雪腐病菌Sclerotinia borealis; 好乾性; D-マンニトール; PDA; 好冷性; Snow mold Sclerotinia borealis; Xerophilic; D-mannitol; Psychrophilic.
Ano: 2004
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/90

Circadian G2 arrest as related to circadian gating of cell population growth in Euglena
Provedor de dados: 19
Autores: Bolige, Aoen; Hagiwara, Shin-ya; Zhang, Yulan; Goto, Ken; 後藤, 健.
Cell population growth is gated to occur in particular circadian phases, which has been known for over four decades in various organisms including cyanobacteria and human. However, little is known as to which cell cycle phases from G(1) to M are primarily regulated by the circadian rhythm or when in a circadian cycle this primary regulation takes place. We report here that in the flagellate alga Euglena gracilis grown photoautotrophically, the circadian rhythm primarily prevented developmentally matured G(2) cells from progressing to mitosis, such that cell population growth occurred only during subjective night. In addition, we found that the circadian rhythm also arrests G(1)-to-S and S-to-G(2) transitions at particular circadian phases.
Palavras-chave: Cell cycle; Circadian rhythms; Englena gracilis; G2-arrest; Mitosis.
Ano: 2005
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/717

Babesia bovis: Effects of cysteine protease inhibitors on in vitro growth
Provedor de dados: 19
Autores: Okubo, Kazuhiro; Yokoyama, Naoaki; Govind, Yadav; Alhassan, Andy; Igarashi, Ikuo.
In the present study, we examined the effects of four kinds of cysteine protease inhibitors (E64, E64d, leupeptin, and ALLN) on the in vitro asexual growth of Babesia bovis. Of these, only the lipophilic inhibitors, E64d and ALLN, were found to effectively inhibit the growth of B. bovis. In further experiments, E64d, but not ALLN, significantly suppressed the parasite’s invasion of host erythrocytes, while both chemicals, especially ALLN, inhibited the parasite’s replication within the infected erythrocytes. These data suggested the presence of cysteine protease(s) derived from B. bovis, in which the protease(s) would play important roles in the erythrocyte invasion and/or replication processes of the parasite.
Palavras-chave: Babesia bovis; Cysteine protease; Inhibitor; Invasion; Replication.
Ano: 2007
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1041

Consideraciones sobre el crecimiento de la caballa (Scomber japonicus marplatensis)durante su primer año de vida
Provedor de dados: 20
Autores: Sánchez, R.P.
Through the analysis of the morphological changes ocurring in the process of growth, it was possible to identify three stages (primary juvenile: 25-75 mm; secondary juvenile: 76-160 mm; and juvenile preadult: 161-250 mm)during the first year of the species life. Regression equations for the different relations studied: body weight/body lenght, body surface/body lenght, body surface/body weight, and metabolic rate/body lenght, have been calculated for each stage. The variation of the number of gill rakers, mean distance between adjacent rakers and mean values of gill rakers lenght in reference to body growth was studied, and the relation between filtering area and body length was established.
Tipo: Journal Contribution
Palavras-chave: Length-weight relationships; Condition factor; Gills; Juveniles; Mackerel fisheries; Gills; Http://aims.fao.org/aos/agrovoc/c_3262.
Ano: 1982
URL: http://hdl.handle.net/1834/2047

The effect of copper on the daily growth rate and photosynthetic efficiency of the brown macroalga Padina boergesenii
Provedor de dados: 20
Autores: Pratap, H.B.; Mamboya, F.A.; Mtolera, M.S.P.; Björk, M.
The effect of copper (Cu) on the daily growth rate (DGR) and photosynthetic efficiency (PE) of the brown macroalga Padina boergesenii was studied under controlled laboratory conditions. The DGR was measured as an increase in fresh weight while the PE was measured as the ratio of variable to maximal chlorophyll fluorescence (Fv/Fm). Padina boegesenii were exposed to 25, 50, 100 and 500mg Cu/l for 21 days. The DGR and PE of P. boergesenii decreased significantly with an increase in copper concentration in the growth media. This study shows that copper is acutely toxic to P. boergesenii at concentrations higher than 500mg Cu/l. Low concentration of copper is toxic to P. boergesenii after a prolonged exposure of 21 days. Similarly, exposure time has a...
Tipo: Proceedings Paper
Palavras-chave: Copper; Algae.
Ano: 1999
URL: http://hdl.handle.net/1834/787

Ecología trófica de la caballa del Mar Argentino (Scombridae, Scomber japonicus marplatensis). Parte I. Alimentación y crecimiento
Provedor de dados: 20
Autores: Angelescu, V.A.
The present study describes the morphology of the digestive system, the feeding and feeding behaviour, and the trophic relationships of the mackerel in the coastal waters regions, pelagic zone, along the Province of Buenol Aires. At the same time, this study is completed with a bioestatistical analysis on growth rhythm of body length and body weight of secondary juveniles, pre-adults and adults. All the biological information and statistical data correspond, only to the period november-march and the summer trophic habitat area.
Tipo: Journal Contribution
Palavras-chave: Trophic relationships; Ecological distribution; Digestive system; Feeding; Growth curves; Condition factor; Mackerel fisheries; Feeding; Digestive system; Http://aims.fao.org/aos/agrovoc/c_2838; Http://aims.fao.org/aos/agrovoc/c_2275.
Ano: 1979
URL: http://hdl.handle.net/1834/2058

Sobre la edad y el crecimiento de la caballa (Scomber japonicus) de Mar del Plata
Provedor de dados: 20
Autores: Forciniti, L.; Perrotta, R.G.
This is the first paper in which back-calculation is applied to growth study on Mar del Plata mackerel (Scomber japonicus). The edge of 2102 otoliths sagittae were analyzed and age reading and mesurements were done in 609 of them. It was stated that hyaline ring formation is annual and that it occurs during the winter and the spawning season.
Tipo: Journal Contribution
Palavras-chave: Age determination; Growth curves; Age determination; Http://aims.fao.org/aos/agrovoc/c_24110.
Ano: 1988
URL: http://hdl.handle.net/1834/1964

Environmental Aspects of Economic Development in Sub-Saharn Africa
Provedor de dados: 20
Autores: Baytas, A.
Studies on the economies of Sub-Saharan Africa have generally neglected the links between economic growth and environmental quality. In many such studies, economics and ecology have been treated as mutually exclusive rather than complementary domains. The key to Sub-Saharan Africa's future is to achieve sustainable growth. This calls for replacing the traditional concept of growth based economic output alone with a new approach that stresses development through conservation of Africa's valuable natural resources of soil, water, forests and wildlife. Following the 1968-73 drought in the Sahel interest in both the economic development and the ecology of Sub-Saharan Africa has increased enormously. On the one hand, economists have used the word "crisis" with...
Tipo: Working Paper
Palavras-chave: Environmental conditions; Economic aspects; Http://aims.fao.org/aos/agrovoc/c_28861.
Ano: 1991
URL: http://hdl.handle.net/1834/562

Coralline Algae, Important Coral-reef Builders Threatened by Pollution
Provedor de dados: 20
Autores: Mohammed, S.M.; Björk, M.; Björklund, M.; Semesi, A.
The release of inorganic nutrients into the sea by domestic sewage is a major threat to many marine systems. This eutrophication affects coral-reef organisms indirectly by increased growth of microalgae, leading to increased sedimentation, decreased light availibility, rapid growth of opportunistic macroalgae, etc. In this paper, we report a decrease in the cover of important group of coral-reef builders, the coralline algae. This decrease might be caused by the outlets of sewage water from Zanzibar town. Laboratory and field experiments show that both the growth rate and the calcification of these organisms are negatively affected by high phosphate levels, but not by nitrate or ammonia.
Tipo: Journal Contribution
Palavras-chave: Sewage; Algae; Eutrophication; Coral reefs; Nutrients; Environmental degradation; Http://aims.fao.org/aos/agrovoc/c_5274; Http://aims.fao.org/aos/agrovoc/c_34821.
Ano: 1995
URL: http://hdl.handle.net/1834/302

Aplicación del método de máxima verosimilitud a la estimación de parámetros y comparación de curvas de crecimiento de von Bertalanffy.
Provedor de dados: 20
Autores: Aubone, A.; Wöhler, O.C.
With the purpose of easening its application, the theory of parameter estimation by the maximum likelihood method is presented. The theory is general and useful for linear and nonlinear models. The method is applied to the von Bertalanffy´s growth model for individual data and for mean values of length-at-age. Statistical tests to compare parameters from different population groups are presented. Problems caused by lack of verification of assumptions are discussed. An example of its application is given and results of nonlinear least squares estimations are compared to those obtained with Allen´s method. An example of application implemented on a calculus spreadsheet is attached.
Tipo: Journal Contribution
Palavras-chave: Growth curves; Mathematical models; Mathematical models; Http://aims.fao.org/aos/agrovoc/c_24199.
Ano: 2000
URL: http://hdl.handle.net/1834/2541

Aspectos de la biología de Portunus spinicarpus Stimpson 1871 (Decapoda: Portunidae) en el Golfo de Salamanca, Caribe colombiano
Provedor de dados: 20
Autores: García, C.B.; Mendoza, N.
Some vital statistics of the population of Portunus spinicarpus inhabiting the Golfo de Salamanca, Colombian Caribbean, are presented for the first time. Condition factor was found stable the year round, Von Bertalanffy growth parameters were estimated as L∞=38.6 mm, K= 2.5 year-1, to= -0.0573 year. Natural mortality was estimated as 4.62 year-1. P. spinicarpus seem to prefer deep waters and sand-muddy bottoms.
Tipo: Journal Contribution
Palavras-chave: Marine crustaceans; Population number; Mortality; Growth; Growth; Mortality; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_4945.
Ano: 2006
URL: http://hdl.handle.net/1834/1984

Growth and toxicity tests on the marine nanoplanktonic alga &lt;i&gt;Platymonas tetrathele&lt;/i&gt; G.S. West in the presence of crude oil and emulsifiers
Provedor de dados: 27
Autores: Mommaerts-Billiet, F.
Phytoplankton response to environmental pollution by oil and emulsifiers has been studied. The nanoplanktonic flagellate &lt;i&gt;Platymonas tetrathele&lt;/i&gt; has been assayed with increasing concentrations of crude oil, industrial non-ionic emulsifiers and mixtures of these products. Cultures poisoned with an emulsifier with an aromatic solvent exhibited a very long lag phase. Diminished growth rates were observed for all the products tested most of the time at concentrations above 50 ppm. The mixtures showed a toxicity close to that of the emulsifier component at its concentration in the mixture and lower than that of the crude oil alone. Fine structure modifications have been investigated and the possible ecological effects of such pollution have...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth; Marine pollution; Nannoplankton; Toxicity tests.
Ano: 1973
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3478

Earthworms: Interactions with management; impacting plant growth?
Provedor de dados: 21
Autores: Pommeresche, Reidun; Løes, Anne-Kristin; Hansen, Sissel; Riley, Hugh.
This paper reviews several studies of earthworms in agricultural soil in Norway. Crops and management significantly influence the earthworm fauna.
Tipo: Conference paper, poster, etc.
Palavras-chave: Soil quality; Soil biology.
Ano: 2012
URL: http://orgprints.org/20669/1/Pommeresche_et_al_NJF_2012_earthworm_final_version.docx

Simulating Root Density Dynamics and Nitrogen Uptake – Can a Simple Approach be Sufficient?
Provedor de dados: 21
Autores: Pedersen, Anders.
The modeling of root growth in many plant–soil models is simple and with few possibilities to adapt simulated root proliferation and depth distribution to that actually found with different crop species. Here we propose a root model, developed to describe root growth, root density and nitrogen uptake. The model focuses on annual crops, and attempts to model root growth of different crop species and row crops and its significance for nitrogen uptake from different parts of the soil volume.
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop combinations and interactions; Farm nutrient management.
Ano: 2007
URL: http://orgprints.org/10746/1/101746.pdf

Healthy growth: From niche to volume with integrity and trust - working group III at the ESRS-Conference 2013
Provedor de dados: 21
Autores: Münchhausen, von, Susanne; Häring, Anna-Maria; Noe, Egon.
Our working group aims to discuss successful approaches of managing increasing quantities of organic food produce - successful in terms of maintaining product quality, trust, integrity and higher value while at the same time increasing turnover. We will focus on two aspects in particular, firstly, the kinds and quality of cooperation of farmers with processors such as dairies, mills, bakeries or oil presses, and secondly, the successful management of growth in value chains including strategies, communication and limiting and enabling factors.
Tipo: Conference paper, poster, etc.
Palavras-chave: "Organics" in general Food security; Food quality and human health Markets and trade Produce chain management.
Ano: 2013
URL: http://orgprints.org/24840/7/24840.pdf

The Future of Organic Agriculture: Otopia or Oblivion?
Provedor de dados: 21
Autores: Paull, John.
Organic agriculture could feed the world, but will it? A state of Otopia, an organic Utopia of 100% organic food and organic agriculture, is a dream, or is it a pipe-dream? And if a dream, then when might it manifest? Two scenarios are presented, extrapolating from the rate of growth of the organics sector achieved over the past decade. Under a geometric rate of growth, Otopia could be achieved in 39 years, whereas under an arithmetic rate of growth, Otopia would take 544 years to be achieved.
Tipo: Newspaper or magazine article
Palavras-chave: "Organics" in general; Farming Systems; Food systems; Research methodology and philosophy; Knowledge management.
Ano: 2011
URL: http://orgprints.org/18898/1/Paull2011OtopiaACOM.pdf

Paikallisten  lähiruokatuottajien kansallinen verkosto. Johtopäätöksiä Kestävät hankinnat  ja HealthyGrowth -hankkeiden kokemuksista
Provedor de dados: 21
Autores: Risku-Norja, Helmi.
The presentation examines the drivers and bottlenecks in use of local food  in public catering in Finland.    The SME local eneterpreneurs have difficiulties in getting foot hold in the heavily competed Finnish food markets, where two major actors dominate. It is concluded that public sector could provide an oopportunity for local producers to develop  and grow. This however, requires determined co-operation both among the SME suppliers and among the suppliers and the actors of the catering sector.
Tipo: Conference paper, poster, etc.
Palavras-chave: Finland.
Ano: 2014
URL: http://orgprints.org/27681/1/abstract%20MUA%20p%C3%A4iv%C3%A4t_28.-29.8.2014.pdf

The Future of Organic Agriculture: Otopia or Oblivion?
Provedor de dados: 21
Autores: Paull, John.
Organic agriculture could feed the world, but will it? A state of Otopia, an organic Utopia of 100% organic food and organic agriculture, is a dream, or is it a pipe-dream? And if a dream, might it manifest in four decades or 54 decades? The stated goal of the organic movement is the adoption worldwide of organic agriculture. That task has a long path to travel, with organic agriculture currently accounting for 0.8% of agricultural land worldwide. Two roads to Otopia are extrapolated from the rate of growth of global organics exhibited over the past decade. If an arithmetic rate of growth  - think simple interest - continued indefinitely then a state of Otopia would take 544 years (2553). Under a geometric growth scenario - think compound interest - Otopia...
Tipo: Journal paper
Palavras-chave: "Organics" in general; Food systems; World; History of organics.
Ano: 2010
URL: http://orgprints.org/17060/3/17060.pdf

A physiologically-based model of Cirsium arvense and Tussilago farfara growth and control
Provedor de dados: 21
Autores: Holst, Niels; Riemens, Marleen; Rasmussen, Ilse A.
Perennial herbs can be difficult to manage because of their underground storage organs which live sheltered from observation and control. In this paper, we describe the development of a population dynamics model for two perennial weeds, Cirsium arvense and Tussilago farfara. The model is physiologically based and includes plant growth and development,  and mowing as a control option. Model performance was compared with field data from monospecific stands of C. arvense in Denmark and Netherlands and of T. farfara in Denmark. Finally, optimal mowing strategies were explored with the model.
Tipo: Journal paper
Palavras-chave: Weed management.
Ano: 2012
URL: http://orgprints.org/20650/4/20650.pdf

Sharpening Up Research on Organics: Why We Need to Integrate Sectoral Policy Research into Mainstream Policy Analysis
Provedor de dados: 21
Autores: Daugbjerg, Carsten; Halpin, Darren.
As a fast growing state sponsored industry, the organic food sector is likely to attract the increased attention of policy analysts who are interested in industry development. We critically review the European comparative research on growth in the organic sector, focusing on policy analysis. A common element in these accounts is that findings are by no means clear on why variation in organic growth between countries exists. The literature provides a range of possible variables explaining divergent patterns of organic sector development but solid conclusions are elusive. We suggest that future policy orientated research on organic sector apply existing theories on public policy and carefully design studies in accordance with the prescriptions of the...
Tipo: Journal paper
Palavras-chave: "Organics" in general; History of organics.
Ano: 2008
URL: http://orgprints.org/16161/1/16161.pdf

The timing and treatment of tail biting in fattening pigs
Provedor de dados: 21
Autores: Niemi, Jarkko K.; Sinisalo, Alina; Valros, Anna; Heinonen, Mari.
The victims of TB have a reduced growth potential.  In addition, victims of TB have reduced growth rate.  The victims are likely to suffer more frequently from other health disordes than pigs with non-bitten tails.  Tail biting was often preceded by leg disorders and followed by reduced appetite, which may be associated with reduced growth rate of victims of tail biting.  The costs of TB were particularly heavy when medication was needed and when the fattening of the victims could not be continued as planned.  As TB behaves like an epidemic, immediate response to tail biting is important to prevent further cases and economic damage.
Tipo: Conference paper, poster, etc.
Palavras-chave: Health and welfare.
Ano: 2011
URL: http://orgprints.org/19580/1/niemi.pdf

Using multi-temporal sensor-based measurements in early growth stages to estimate potential yield of spring barley (Hordeum vulgare L.) varieties in competition with weeds
Provedor de dados: 21
Autores: Hansen, Preben Klarskov.
At the time for weed control, either chemical or physical, the potential yield of the crop (and thus the potential size of the yield loss due to weeds) is very uncertain, as only a minor part of the growing season has passed and the time for the major yield formation is after the weed control.  The aim of this study was to investigate four scenarios of using sensor-based reflectance, vegetation cover- and canopy structure measurements in the early growth stages to estimate the potential yield of four pure spring barley varieties and four variety mixtures of spring barley grown in competition with weeds under two different nutrient levels in two years.
Tipo: Working paper
Palavras-chave: Crop health; Quality; Protection Weed management.
Ano: 2007
URL: http://orgprints.org/11354/1/11354.doc

Growth and carcass quality of grazing Holstein bulls and Limousine x Holstein bulls and heifers slaughtered at 17 months of age
Provedor de dados: 21
Autores: Vestergaard, M.; Cakmakci, C.; Kristensen, T.; Jørgensen, K.F.; Kargo, M.
Across sexes, crossbreeding did not improve growth rate compared to HOL bulls  Crossbreeding markedly improved conformation  Heifers produced carcasses of acceptable fatness  Fatness and lean/fat colour of pasture-fed bulls were not acceptable
Tipo: Conference paper, poster, etc.
Palavras-chave: Production systems Food security; Food quality and human health Beef cattle.
Ano: 2014
URL: http://orgprints.org/27063/7/27063.pdf

Effects of feeding prebiotics to pigs for 1 or 2 weeks before slaughter
Provedor de dados: 21
Autores: Jensen, Annette Nygaard; Mølbak, Lars; Hansen, Laurits Lydehøj; Baggesen, Dorte Lau.
Prebiotics are non-digestible oligosaccharides acting by stimulating the growth of bacteria being beneficial for the gastrointestinal health of the host and may serve as a means to control pathogens. This study aimed to assess if inclusion of chicory or lupins (prebiotics) in the diet of pre-slaughter pigs for just 1 or 2 weeks could change the  composition of their intestinal microbiota and help to lower the level of the important foodborne pathogen Campylobacter spp.  The study showed that even a short-term alternative feeding strategy with prebiotics in the diet of pre-slaughter pigs elicited changes in the composition of intestinal microbiota with stimulation of the growth of bifidobacteria in caceum and a reduction of the Campylobacter spp. excretion...
Tipo: Conference paper, poster, etc.
Palavras-chave: Feeding and growth; Health and welfare.
Ano: 2010
URL: http://orgprints.org/19883/9/19883.pdf

Effect of mycorrhiza and plant growth-promoting rhizobacteria on rice in Northern India: results from 2005-2008
Provedor de dados: 21
Autores: Berset, Estelle; Srivastava, Rashmi; Mäder, Paul; Kaiser, Franziska; Adholeya, Alok; Fried, Padrout M.; Sharma, Anil K.
Beneficial migroorganisms such as arbuscular mycorrhizal fungi (AMF) and plant growth promoting rhizobacteria (PGPR) can ameliorate plant nutrition through an extended extra-radical hyphal network and by nutrient mobilisation. In the past, host specificity may not have been adequately considered when microbial inoculants were developed for different crops. In the Bio-fertilizer Network oft he Indo-Swiss Collaboration in Biotechnology (ISCB), AMF and PGPR are integrated as bio-inoculants in wheat-rice and wheat-black gram systems.
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop husbandry; India.
Ano: 2011
URL: http://orgprints.org/26488/1/Berset_etal_ISCB%20Symposium_2011.pdf

Effects of mycorrhiza and plant growth promoting rhizobacteria inoculants on rice crops in Northern India
Provedor de dados: 21
Autores: Srivastava, Rashmi; Berset, Estelle; Mäder, Paul; Adholeya, Alok; Padruot, Fried; Sharma, Anil K.
Mutualistic root microorganisms such as arbuscular mycorrhizal fungi (AMF) and plant growth promoting rhizobacteria (PGPR) can ameliorate plant nutrition through an extended extra-radical hyphal network and by nutrient mobilisation. Running under the Indo-Swiss Collaboration in Biotechnology (ISCB), our project focuses on the integration of AMF and PGPR as biofertilisers in wheat-rice and wheat-black gram systems.
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop health; Quality; Protection India.
Ano: 2011
URL: http://orgprints.org/21945/1/Srivastava-eta-2011-proceeindgs_tropentag2011-p206.pdf

Organic food marketing in Germany: Moving from small and local to large and anonymous - or different channels converging? M2.1 National report Germany, WP2 "State-of-the-art", HealthyGrowth Project
Provedor de dados: 21
Autores: Schulz, Kristin; Münchhausen, von, Susanne; Häring, Anna Maria; Knickel, Karlheinz.
National Reports of WP2, HealthyGrowth project, present an overview of the organic sector in Germany. The report is based on a literature review with a focus on the development of organic food businesses and value-based food chains.
Tipo: Report
Palavras-chave: Markets and trade; Produce chain management; Germany.
Ano: 2013
URL: http://orgprints.org/28266/1/National%20report%20Germany_1908_final.pdf

Simulating Root Density Dynamics and Nitrogen Uptake – Can a Simple Approach be Sufficient?
Provedor de dados: 21
Autores: Pedersen, Anders; Zhang, Kefeng; Jensen, Lars Stoumann; Thorup-Kristensen, Kristian.
The modeling of root growth in many plant–soil models is simple and with few possibilities to adapt simulated root proliferation and depth distribution to that actually found with different crop species. Here we propose a root model, developed to describe root growth, root density and nitrogen uptake. The model focuses on annual crops, and attempts to model root growth of different crop species and row crops and its significance for nitrogen uptake from different parts of the soil volume.
Tipo: Conference paper, poster, etc.
Palavras-chave: Nutrient turnover; Crop combinations and interactions; Root crops; Farm nutrient management; Vegetables.
Ano: 2007
URL: http://orgprints.org/10744/1/10744.pdf

Suckling as rearing method on dairy farms: The effect on farm system aspects of two dairy farms in the Netherlands
Provedor de dados: 21
Autores: Langhout, MSc Jos.
Maternal behaviour, interactions and contact between cow and calf is limited or absent in modern dairy production due to the widely use of artificial calf rearing. Introduction of suckling on a dairy farm has effects on many aspects such as calf growth, animal health, milk production, rearing costs, behaviour, welfare and naturalness etc.   In a pilot study on two farms the effect of suckling systems on calf growth and milk production of dairy cows was assessed. Furthermore, the development of naturalness on the case study farms was described, as well as the motivation, for the use of suckling as rearing method, of seven farmers.
Tipo: Thesis
Palavras-chave: Dairy cattle; Health and welfare; Feeding and growth.
Ano: 2003
URL: http://orgprints.org/2522/1/thesis.PDF

Bioenergy production in Finland - effects on growth, employment, and environment at regional level
Provedor de dados: 21
Autores: Simola, Antti; Kola, Jukka; Törmä, Hannu; Kinnunen, Jouko.
The objective of this study is to assess the impacts of increasing bioenergy production on regional economies in Finland. The impacts on economic growth and employment in areas that are facing economic difficulties from other sources, e.g. down-scaling of more traditional industries, are of the main concern.
Tipo: Conference paper, poster, etc.
Palavras-chave: Environmental aspects.
Ano: 2008
URL: http://orgprints.org/16022/1/bioenergy2.pdf

Density and relative frequency effects on competitive interactions and resource use in pea-barley intercrops
Provedor de dados: 21
Autores: Hauggaard-Nielsen, Henrik; Andersen, Mette Klindt; Joernsgaard, Bjarne; Jensen, Erik Steen.
Intercropping advantages may be influenced by both plant density and relative frequency of the intercrop components. In a field study barley (Hordeum vulgare L.) and pea (Pisum sativum L.) were sole cropped and intercropped at three densities, corresponding to i) half of the recommended, ii) the recommended and iii) twice the recommended plant density. Two intercrops combinations were included holding 1/3pea+2/3barley and 2/3pea+1/3barley relative to the sole crop densities employed.   For three growth intervals within the whole growing period, the relative performance and interactions between the two crops were assessed using the Relative Efficiency Index (REIc). The relative performance of the two species varied over the growing season and was influenced...
Tipo: Journal paper
Palavras-chave: Crop combinations and interactions.
Ano: 2005
URL: http://orgprints.org/4053/1/4053.pdf

Projektet FruitGrowth præsenteret ved Food Festival 7-9 september 2012 (4 postere)
Provedor de dados: 21
Autores: Bertelsen, Marianne.
Projektet FruitGrowth blev præsenteret på Food Festival 2012 den 7-9 september i Århus. Der blev formidlet viden om robuste sorter til økologisk æbleproduktion.
Tipo: Other
Palavras-chave: Production systems Food security; Food quality and human health Fruit and berries Breeding; Genetics and propagation Crop health; Quality; Protection Weed management Post harvest management and techniques.
Ano: 2012
URL: http://orgprints.org/21716/1/21716a.pdf

Modelling root distribution and nitrogen uptake
Provedor de dados: 21
Autores: Pedersen, Anders; Thorup-Kristensen, Kristian.
Plant soil and atmosphere models are commonly used to predict crop yield and environmental  consequence. Such models often include complex modelling modules for water movement,  soil organic matter turnover and, above ground plant growth. However, the root modelling in these models are often very simple, partly due to a limited access to experimental data. We present a two-dimensional model for root growth and proliferation. The model focuses on annual crops, and attempt to model root growth of the crops and its significance for N uptake from different parts of the soil volume.
Tipo: Conference paper, poster, etc.
Palavras-chave: Production systems; Vegetables; Root crops.
Ano: 2004
URL: http://orgprints.org/4634/1/4634.pdf

HealthyGrowth: From Niche to Volume with Integrity and Trust. Dissemination Targeting Policy, Deliverable 7.3
Provedor de dados: 21
Autores: Münchhausen, von, Susanne; Häring, Anna Maria.
'HealthyGrowth' is a CORE Organic II project. This document is Deliverable 7.3. It shows the dissemination activities targeting policy and administration responsible for the organic agri-food industry. The documents shows authors, titles and OrganicEprints reference numbers. All teams of the consortium were responsible for the dissemination of project results to decison makers in policy and administration.
Tipo: Other
Palavras-chave: Farm economics; Markets and trade; Policy environments and social economy; Produce chain management.
Ano: 2016
URL: http://orgprints.org/30853/1/Deliverable7.3-Targeting-Policy-HG.pdf

Sharpening Up Research on Organics: Why We Need to Integrate Sectoral Policy Research into Mainstream Policy Analysis
Provedor de dados: 21
Autores: Daugbjerg, Carsten; Halpin, Darren.
As a fast growing state sponsored industry, the organic food sector is likely to attract the increased attention of policy analysts who are interested in industry development. We critically review the European comparative research on growth in the organic sector, focusing on policy analysis. A common element in these accounts is that findings are by no means clear on why variation in organic growth between countries exists. The literature provides a range of possible variables explaining divergent patterns of organic sector development but solid conclusions are elusive. We suggest that future policy orientated research on organic sector apply existing theories on public policy and carefully design studies in accordance with the prescriptions of the...
Tipo: Journal paper
Palavras-chave: "Organics" in general; History of organics.
Ano: 2008
URL: http://orgprints.org/13955/1/

In vitro maintenance, under slow-growth conditions, of oil palm germplasm obtained by embryo rescue
Provedor de dados: 86
Autores: Camillo,Julcéia; Scherwinski-Pereira,Jonny Everson.
The objective of this work was to evaluate the in vitro maintenance of oil palm (Elaeis guineensis and E. oleifera) accessions under slow-growth conditions. Plants produced by embryo rescue were subject to 1/2MS culture medium supplemented with the carbohydrates sucrose, mannitol, and sorbitol at 1, 2, and 3% under 20 and 25±2ºC. After 12 months, the temperature of 20°C reduced plant growth. Sucrose is the most appropriate carbohydrate for maintaining the quality of the plants, whereas mannitol and sorbitol result in a reduced plant survival.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Elaeis guineensis; Elaeis oleifera; Arecaceae; Plant genetic resources.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015000500426

Plant growth and leaf-spot severity on eucalypt at different CO2concentrations in the air
Provedor de dados: 86
Autores: Silva,Carlos Eduardo Oliveira da; Ghini,Raquel.
The objective of this work was to evaluate the effects of increased air-CO2 concentration on plant growth and on leaf-spot caused by Cylindrocladium candelabrumin Eucalyptus urophylla. Seedlings were cultivated for 30 days at 451, 645, 904, and 1,147 µmol mol-1 CO2 ; then, they were inoculated with the pathogen and kept under the same conditions for seven days. Increased CO2concentration increased plant height and shoot dry matter mass, and decreased disease incidence and severity. Stem diameter was not affected by the treatments. Increased concentrations of atmospheric CO2 favorably affect eucalypt growth and reduce leaf-spot severity.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Cylindrocladium candelabrum; Eucalyptus urophylla; Beneficial effects; Climate change; Disease incidence.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000300232

Use of the Hedonic Method to Estimate Lake Sedimentation Impacts on Property Values in Mountain Park and Roswell, GA
Provedor de dados: 31
Autores: Hill,   Elizabeth; Pugh,   Sam; Mullen,   Jeffrey D.
Metropolitan Atlanta has experienced explosive population growth in the past few decades, which has resulted in rapid residential growth. The City of Roswell is one the best examples of residential growth on the urban fringe of Atlanta, with its housing stock increasing by more than 50 percent from 1990 to 2000. Stormwater runoff created from these development sites is expected to be causing sedimentation accumulation in lakes within Roswell and a neighboring, downstream wildlife refuge located in the City of Mountain Park. Because sedimentation tends to fill-in and shrink lakes, our results provide some indication of the potential property damages associated with sedimentation. Furthermore, our results provide evidence that lake value is not monotonically...
Tipo: Conference Paper or Presentation
Palavras-chave: Land Economics/Use.
Ano: 2007
URL: http://purl.umn.edu/9950

Organic Farming Policies and the Growth of the Organic Sector in Denmark and the UK: A Comparative Analysis
Provedor de dados: 31
Autores: Daugbjerg,   Carsten; Tranter,   Richard B.; Holloway,   Garth J.
There has been little systematic analysis of the extent to which organic farming policies have influenced growth in the organic sector. Analyses of organic farming policy instruments, for the most part, provide extensive and detailed reviews of instruments applied either in a single country or across countries. Hence, there is a great need to examine systematically whether there is a relationship between the introduction of organic farming policies and the growth of the organic food sector, and whether particular designs of organic farming policies are more effective than others. In this paper, we take the first step in the endeavour of analysing the effects of organic farming by undertaking an econometric analysis of the relationship between organic...
Tipo: Conference Paper or Presentation
Palavras-chave: Organic farming; Policy; Agricultural and Food Policy; Farm Management.
Ano: 2008
URL: http://purl.umn.edu/44173

ROAD DEVELOPMENT, ECONOMIC GROWTH, AND POVERTY REDUCTION IN CHINA
Provedor de dados: 31
Autores: Fan,   Shenggen; Chan-Kang,   Connie.
Since 1978, China has adopted a series of economic reforms leading to rapid economic growth and poverty reduction. National Gross Domestic Product (GDP) grew at about 9 percent per annum from 1978 to 2002, while per capita income increased by 8 percent per annum. The post-reform period was also characterized by an unprecedented decline in poverty. However, income inequality has worsened between coastal and interior provinces as well as between rural and urban areas. A number of factors contributed to this widening disparity in regional development in China, including differences in natural resources endowments, and infrastructure and human capital development. When the policy reforms began in 1978, China was poorly endowed with transportation...
Tipo: Working or Discussion Paper
Palavras-chave: Food Security and Poverty; International Development.
Ano: 2004
URL: http://purl.umn.edu/60182

TECHNOLOGICAL CHANGE IN U.S. AGRICULTURE: THE ROLE OF PUBLIC AND PRIVATE R&amp;D
Provedor de dados: 31
Autores: Tokgoz,   Simla.
An endogenous growth model, in which technical change is attained through public and private R&amp;D activities, is utilized to explore the role of technical change in TFP growth, to determine the impact of public and private agricultural R&amp;D investments on the flow of agricultural patents, and to analyze the determinants of private agricultural R&amp;D spending. The implications of the theoretical model are tested empirically for the U.S. agricultural sector. The empirical results are consistent with the theory. The main finding is that there is a positive relationship between TFP growth in the agricultural sector and agricultural patents. Current and past public  and private R&amp;D investments in agricultural sector have a significant and positive...
Tipo: Conference Paper or Presentation
Palavras-chave: Research and Development/Tech Change/Emerging Technologies.
Ano: 2002
URL: http://purl.umn.edu/19599

The Structure and Behavior of Vegetable Markets Serving Lusaka: Main Report.
Provedor de dados: 31
Autores: Tschirley,   David L.; Hichaambwa,   Munguzwe.
Rapid growth in urban populations and renewed growth in per capita incomes in  Sub-Saharan Africa (SSA) are creating major opportunities for local farmers by driving rapid growth in domestic market demand for food. At the same time, these trends plus rising income are putting enormous stress on the supply chains that these farmers rely on to respond to this increasing demand: demand for marketed food is likely to grow more than 5% per year on the continent, doubling marketed volumes in 12-14 years. Currently, fresh produce marketing systems are the biggest users of public marketing infrastructure, and have been most severely affected by the lack of investment in these systems across much of the continent. This lack of investment has led to an exploding...
Tipo: Report
Palavras-chave: Africa; Produce; Vegetable markets; Zambia; Agricultural and Food Policy; Food Security and Poverty; Marketing.
Ano: 2010
URL: http://purl.umn.edu/93006

Rural Economic Development: What Makes Rural Communities Grow?
Provedor de dados: 31
Autores: Aldrich,   Lorna M.; Kusmin,   Lorin D.
Factors related to local and regional economic growth are attractiveness to retirees, right-to-work laws, excellent high school completion rates, good public education expenditures, and access to transportation networks. These were associated with improved county earnings in 1979-89, according to a multiple regression analysis of rural counties. Factors associated with poor earnings growth included higher wage levels, concentrations of transfer-payment recipiency, and concentrations of small independent businesses in the goods-producing sector.
Tipo: Report
Palavras-chave: Counties; Rural; Nonmetropolitan; Regional; Economic growth; Earnings; Economic development; Community/Rural/Urban Development.
Ano: 1997
URL: http://purl.umn.edu/33677

The Disputes over "Normal Development" and "Natural Growth" of Farmers' Cooperatives - On the Basis of Empirical Analsis on Farmers' Cooperatives in Deyang City
Provedor de dados: 31
Autores: Chai,   Xu-xu; Qin,   Zi-qiang; Liu,   Wen; Guo,   Liu-xian.
Combining the disputes on the “normal development” and “natural growth existing in farmers” cooperatives and according to the actual investigation statistics, the management model selection and regulation (including model selection, policy encouragement, operation scale and scale selection ) of farmers' cooperatives in Deyang City. share structure and governance structure( including the establishment way and share structure, reserve sharing and dividend distribution, organization structure and policy making mechanism) , capital raising situation and financial support of farmers’ cooperatives in Deyang city are analyzed empirically. It is pointed out the farmers' cooperatives should take the road ' normal development"
Tipo: Journal Article
Palavras-chave: Farmers' cooperatives; Normal development; Natural growth; China; Agribusiness.
Ano: 2011
URL: http://purl.umn.edu/118307

Trends and Spatial Distribution of Public Agricultural Spending in Zambia: Implication for Agricultural Productivity Growth
Provedor de dados: 31
Autores: Govereh,   Jones; Malawo,   Emma; Lungu,   Tadeyo; Jayne,   Thomas S.; Chinyama,   Kasweka; Chilonda,   Pius.
This paper assesses the level and composition of the Zambia’s public expenditures in the agricultural sector from 2000 to 2008. By measuring the size of public agricultural expenditures, the study will answer whether the Government of Zambia met CAADP’s target of allocating 10% of national budget to agriculture in 2008. Furthermore, examining what the fund is being spent on will shed light on the extent to which spending contributes to agricultural growth. This review will also characterize the spatial patterns of expenditures across provincial boundaries. The results of this work will hopefully lay a foundation for future analysis of  the impacts of public agricultural spending on sector performance.
Tipo: Report
Palavras-chave: Food security; Policy; Zambia; Africa; Public finance; Growth; International Development; Research and Development/Tech Change/Emerging Technologies; Q18.
Ano: 2009
URL: http://purl.umn.edu/54497

Industrial Structure and Competitive Strength of 31 Provincial Districts --A GIS-based Dynamic Shift-Share Analysis
Provedor de dados: 31
Autores: Guo,   Wen-bo; Wan,   Qing.
By using the dynamic shift-share analysis, the industrial structure and competitive strength of 31 provincial districts except Taiwan, Hong Kong and Macau are studied by taking the GDP of the three industries as the research entrance and the whole nation as the reference district. The industrial structure and competitive strength of each provincial district is measured. Through the analysis of pertinence, the correlation degree of industrial structure and industrial competitive strength to economic growth is analyzed. The results show that the industrial competitive strength is closely related to the economic growth of the 31 provincial districts, but the contribution made by the industrial structure to economic growth is insufficient and the effect of...
Tipo: Journal Article
Palavras-chave: Dynamic shift-share analysis; Industrial structure; Industrial structure; Competitive strength; Strategy; China; Agribusiness.
Ano: 2011
URL: http://purl.umn.edu/108428

ON THE OPTIMAL DEPLETION OF OLD-GROWTH FORESTS AND THE PRESERVATION OF WILDERNESS
Provedor de dados: 31
Autores: Graham-Tomasi,   Theodore.
The problem of optimal depletion of old-growth forests and establishment of plantations is explored.  The old-growth has value for the timber products it contains and the wilderness services it provides if left unharvested.  The optimal amount of wilderness preserved in the steady-state is characterized and found to increase with increased interest rates and decreased cost of production.  The wilderness preserve is largest when silvicultural effort is utilized optimally in plantations.  The problem of small initial stock sizes is investigated.
Tipo: Working or Discussion Paper
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 1984
URL: http://purl.umn.edu/13405

Economic Returns to Public Agricultural Research
Provedor de dados: 31
Autores: Fuglie,   Keith O.; Heisey,   Paul W.
Over the last several decades, the U.S. agricultural sector has sustained impressive productivity growth. The Nation's agricultural research system, including Federal-State public research as well as private-sector research, has been a key driver of this growth. Economic analysis finds strong and consistent evidence that investment in agricultural research has yielded high returns per dollar spent. These returns include benefits not only to the farm sector but also to the food industry and consumers in the form of more abundant commodities at lower prices.
Tipo: Report
Palavras-chave: Agriculture; Productivity; Productivity growth; Technology; Total factor productivity; TFP; Research investments; Food; Input; Output; Crop yield; Agricultural research; Agricultural output; Public spending; Private sector research; ERS; USDA; Production Economics; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2007
URL: http://purl.umn.edu/6388

Economics, Area Studies and Human Development
Provedor de dados: 31
Autores: Ranis,   Gustav.
This paper suggests that area studies and economics have a better chance to be married successfully if we shift our attention from the exclusive emphasis on economic growth towards improvements in human development, especially the much broadened version of that concept. Different areas are shown to differ substantially in terms of the choices they make among the various independent dimensions of well-being and the various indicators within each dimension.  The particular characteristics of each area play an important role in determining the choices societies make and the extent to which they are constrained by their initial conditions.
Tipo: Working or Discussion Paper
Palavras-chave: Economics; Human Development; Area Studies; Institutional and Behavioral Economics; Political Economy; O1; O2; O5.
Ano: 2009
URL: http://purl.umn.edu/52333

The empirics of the Solow Growth Model: Long-term evidence.
Provedor de dados: 31
Autores: Barossi-Filho,   Milton; Goncalves Silva,   Ricardo; Diniz,   Eliezer Martins.
In this paper we reassess the standard Solow growth model, using a dynamic panel data approach. A new methodology is chosen to deal with this problem. First, unit root tests for individual country time series were run. Second, panel data unit root and cointegration tests were performed. Finally, the panel cointegration dynamics is estimated by (DOLS) method. The resulting evidence supports roughly one-third capital share in income, a.
Tipo: Journal Article
Palavras-chave: Economic growth; Panel data; Unit root; Cointegration and convergence; O47; O50; O57; C33; And C52.
Ano: 2005
URL: http://purl.umn.edu/37227

A Dynamic CGE Model: An Application of R&amp;D- Based Endogenous Growth Model Theory
Provedor de dados: 31
Autores: Diao,   Xinshen; Elbasha,   Elamin H.; Roe,   Terry L.; Yeldan,   A. Erinc.
An R&amp;D based endogenous growth - applied general equilibrium model is developed from an underlying analytical model which combines Romer's capital variety with Grossman and Helpman's multi-sector open economy model. The transitional dynamics of the analytical model are derived. For numerical implementation, a time discrete empirical model, with an Armington structure, is fit to East Asian data of the social accounting matrix variety. Simulations of trade reform are performed and their static and dynamic effects compared. The transition paths of the state variables are found to have a half-life of five to six periods. A solution of the Social Planner's problem, and interventions which seek to obtain this outcome from the decentralized model are also...
Tipo: Working or Discussion Paper
Palavras-chave: Applied General Equilibrium; Trade; Growth; International Relations/Trade; F11; 031; 041.
Ano: 1996
URL: http://purl.umn.edu/7461

Sustainability and Trends in Profitability of Indian Agriculture
Provedor de dados: 31
Autores: Bhatia,   M.S.
The pattern of development and trends in productivity and profitability have been analysed to find whether Indian agriculture meets the requirements of sustainable development. The study is based on the secondary data culled from the publications of the Department of Agriculture and Department of Statistics, Govt. of India. A tremendous development and spectacular growth have been observed in agriculture during the past five decades, 1949-50 to 1999-2000. However, there has not been any spectacular modification in the technology since 1980s, leading to a continuous deceleration in the rates of growth of both production and productivity of most crops in recent years. Because of decline in yield, the economic condition of farmers has deteriorated. On the...
Tipo: Journal Article
Palavras-chave: Agricultural and Food Policy.
Ano: 2006
URL: http://purl.umn.edu/57780

Analyzing Drivers of World Food Prices: Weather, Growth, and Biofuels
Provedor de dados: 31
Autores: Saunders,   Caroline M.; Kaye-Blake,   William; Cagatay,   Selim.
The recent rise of food cost in world markets has accelerated the research examining the underlying factors for this rise. The present research investigated the separate and combined impacts of three factors thought to contribute to the price rise: adverse weather events, strong and sustained growth in high populated countries, and increased biofuels production. The research further analysed the effects of these price rises on consumption expenditures in Brazil, China and India. Analyses were carried out using a partial equilibrium trade model with a focus on the 2004 to 2007 period. The modelling suggests that the most important factor behind the price rise depends on the commodity, with maize/corn, oilseeds, and sugar most affected by biofuels, while...
Tipo: Conference Paper or Presentation
Palavras-chave: Food prices; Partial equilibrium model; Biofuel; Agricultural and Food Policy; International Relations/Trade; F11; Q17.
Ano: 2009
URL: http://purl.umn.edu/51460

Local Labor Market Conditions and the Jobless Poor: How Much Does Local Job Growth Help in Rural Areas?
Provedor de dados: 31
Autores: Davis,   Elizabeth E.; Connolly,   Laura S.; Weber,   Bruce A.
The employment outcomes of a group of jobless poor Oregonians are tracked in order to analyze the relative importance of local labor market conditions on their employment outcomes. Local job growth increases the probability that a jobless poor adult will get a job and shortens the length of time until she finds a job. After accounting for both the effects of personal demographic characteristics and local job growth, there is little evidence that the probability of employment or the duration of joblessness differs in rural compared with urban areas.
Tipo: Journal Article
Palavras-chave: Employment; Local labor markets; Rural labor markets; Rural poverty; Unemployment; Welfare reform; Labor and Human Capital.
Ano: 2003
URL: http://purl.umn.edu/31060

AIDS AND ECONOMIC GROWTH IN SOUTH AFRICA
Provedor de dados: 31
Autores: Smith,   Rodney B.W.
Morbidity and mortality effects are introduced into a three sector, Ramsey-type model of economic growth. The model is calibrated to South African national accounts data and used to examine the potential impact of HIV/AIDS on economic growth. Simulation results suggest a 10% decrease in the size of the effective labor force would lead to a 10% decrease in the long run (steady state) GDP levels. Similarly, a 10% decrease in the number of laborers would lead to an 11% drop in long run GDP.
Tipo: Conference Paper or Presentation
Palavras-chave: Health Economics and Policy; International Development; Labor and Human Capital.
Ano: 2003
URL: http://purl.umn.edu/28072

Rural-Urban Migration and Vietnamese Agriculture
Provedor de dados: 31
Autores: Brennan,   Donna C.; Petersen,   Elizabeth H.; Que,   Nguyen Ngoc; Vanzetti,   David.
Vietnam has achieved remarkable economic growth since it liberalised its markets, and further economic growth and opportunities are predicted both within and outside the agriculture sector. However, growth has not been evenly distributed across regions and significant structural adjustment pressures are expected in the medium to long term. A dynamic, eight region, 13 commodity, non-linear programming model of Vietnam’s agricultural sector is used to analyse the likely impact of a change in rural-urban migration on agricultural production, prices, trade and regional incomes.
Tipo: Presentation
Palavras-chave: Community/Rural/Urban Development.
Ano: 2012
URL: http://purl.umn.edu/124405

Fiscal Deficits, Inflation and Economic Growth in a Successful Open Developing Economy
Provedor de dados: 31
Autores: Tan,   Eu Chye.
This paper primarily seeks to establish whether long- and short-run relationships prevail between fiscal deficits on one hand and inflation and economic growth on the other in a developing economy such as Malaysia. The Malaysian economy has gained international acclaim as one of the successfully managed. Econometric methodology involving the Johansen cointegration and Granger causality techniques and annual data spanning generally from 1966 through 2003 have been mobilized for the purpose. The empirical results suggest that fiscal deficits could have an inflationary impact on the Malaysian economy as they are being monetized though no long run relationship exists amongst fiscal deficits, money supply and the price level. Fiscal deficits also appear to have...
Tipo: Journal Article
Palavras-chave: Deficits; Growth; Inflation; International Development; E60; H30; H61; H62.
Ano: 2006
URL: http://purl.umn.edu/50285

The Effects of Biotechnology Policy on Trade and Growth
Provedor de dados: 31
Autores: Oehmke,   James F.; Maredia,   Mywish K.; Weatherspoon,   Dave D.
Despite the clear influence of European Union biotechnology restrictions on trade patterns, very little work has been done to model these influences or their long-run effects. This paper presents an economic trade theory model of biotechnology, biotechnology research and development (R&amp;D), and biotechnology regulation. The model analyzes the impact of European Union consumer preferences on production and consumption of biotechnology products, the level and national origin of biotechnology R&amp;D, trade patterns, and growth. The results indicate that developing countries may become the major producers of biotechnology agricultural products if they can establish the necessary legal infrastructure; and that European biotechnology regulations effectively...
Tipo: Journal Article
Palavras-chave: Biotechnology; Economic growth; International trade; Regulation; Research and development; Research and Development/Tech Change/Emerging Technologies.
Ano: 2001
URL: http://purl.umn.edu/23872

LIVINGSTON COUNTY EMERGENCY SERVICES ANALYSIS
Provedor de dados: 31
Autores: Shields,   William H.; Harvey,   Lynn R.
Rapid population growth challenges the ability of local government to keep pace with increasing and changing demand for public services. These challenges may be physical or organizational in nature. Physical challenges arise from the need to upgrade public infrastructure such as water and sewer service, roads, schools, and emergency services. Although installation of new infrastructure is always expensive, growth-related increases in the tax base provide new revenue for installation of new services.  However, when slowing growth rates, againg infrastructure, and addition of expensive new services pressure local government to increase revenue from existing resources decision-makers may then seek to reduce per-capita costs by reorganizing the method or...
Tipo: Working or Discussion Paper
Palavras-chave: Public Economics.
Ano: 2001
URL: http://purl.umn.edu/10942

POVERTY, POLICY, AND THE MACROECONOMY
Provedor de dados: 31
Autores: LeBlanc,   Michael.
This report is an empirical inquiry into how poverty is changed by the macroeconomy.  The analysis suggests low real wage rates and not the unemployment rate are the most important determinant of poverty in the long run.  Changes in output and unemployment primarily affect cyclical or shortun poverty.  The empirical results weaken the belief that output growth acting alone will significantly and permanently reduce poverty in the United States.  Instead, the results suggest combining economic growth strategies with targeted interventions that may lie outside the traditional sphere of monetary and fiscal policy.
Tipo: Report
Palavras-chave: Poverty; Unemployment; Wages; Economic growth; Food Security and Poverty; Labor and Human Capital.
Ano: 2001
URL: http://purl.umn.edu/33584

EXCHANGE RATE MISALIGNMENT AND AGRICULTURAL TRADE
Provedor de dados: 31
Autores: Cho,   Guedae; Sheldon,   Ian M.; McCorriston,   Steve.
Using a sample consisting of bilateral trade flows across 10 developed countries between 1974 and 1995, this paper explores the effect of exchange rate misalignment on the growth of agricultural trade as compared to other sectors.  Controlling for other factors likely to determine the growth in bilateral agricultural trade, the results show that long-run real exchange rate variability has had a significant negative effect on the growth of agricultural trade over this period. Keywords:  Exchange rates, misalignment, agricultural trade
Tipo: Conference Paper or Presentation
Palavras-chave: Exchange rates; Misalignment; Agricultural trade; International Relations/Trade.
Ano: 2000
URL: http://purl.umn.edu/21824

World food markets into the 21st century: commodity risk management policies
Provedor de dados: 31
Autores: Duncan,   Ronald C.
Recent concerns about future global food production seem poorly based. The rapid phase of growth in food consumption is over for most of the world's population because of increased incomes and, besides, population growth rates continue to slow. Thus, the rate of growth of food production needed in the future is much lower than it has been for the past 40 years. Production and price instability will continue, perhaps with lessened intensity because of reduced government intervention. With private agricultural interests now facing greater exposure to price and production risks, especially in developing countries, there needs to be greater emphasis on financial market instruments for managing these risks.
Tipo: Journal Article
Palavras-chave: International Relations/Trade.
Ano: 1997
URL: http://purl.umn.edu/118056

Feeding and the Equilibrium Feeder Animal Price-Weight Schedule
Provedor de dados: 31
Autores: Hennessy,   David A.
Feeder animal prices depend on fed animal prices, the biological growth technology, and feed costs. In addition, daily maintenance costs can be avoided through accelerated feeding. These observations allow us to model optimal feeding under equilibrium feeder animal pricing. Our model enables a better understanding of regulation in feedstuff markets. The feeder animal price-weight schedule is likely decreasing and convex in weight. Prices for animals with better growth potential should be less sensitive to feed and fed animal prices. Prices for lighter animals should be more sensitive to these prices. Regression analyses on Southern Great Plains cattle prices provide support for this model.
Tipo: Journal Article
Palavras-chave: Days on feed; Energy use; Feed ban; Growth hormones; Kleiber's law; Ration density; Veal market; Livestock Production/Industries.
Ano: 2006
URL: http://purl.umn.edu/8609

SOME IMPLICATIONS OF THE GROWTH OF THE MINERAL SECTOR
Provedor de dados: 31
Autores: Gregory,   R.G.
The rapid growth of Australian mineral exports, through its effect on the balance of payments, is a significant force for structural change in other sectors. From the viewpoint of the rural sector which exports and the manufacturing sector which competes with imports, this force will be similar to that which would flow from very large tariff changes. Consequently, by observing the adjustments of the rural and manufacturing sectors to the rapid growth of mineral exports, it is possible to calculate indirect estimates of the effect of the Australian tariff on them. It is calculated that the mineral discoveries have had a much greater effect on these sectors than the recent across the board 25 per cent general reduction of tariffs.
Tipo: Journal Article
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 1976
URL: http://purl.umn.edu/22682

INCORPORATING EPIDEMIOLOGICAL PROJECTIONS OF MORBIDITY AND MORTALITY INTO AN OPEN ECONOMY GROWTH MODEL: AIDS IN SOUTH AFRICA
Provedor de dados: 31
Autores: Roe,   Terry L.; Smith,   Rodney B.W.
HIV prevalence dynamics are introduced into a three sector, neoclassical growth model. The model is calibrated to South African national accounts data and used to examine the potential impact of HIV/AIDS on economic growth. Projections portend if left unchecked, the long run impact of HIV and AIDS could drive South African GDP to levels that are over 60% less than no-HIV levels, with AIDS death rates decreasing the long run stock of labor by over 60%.
Tipo: Conference Paper or Presentation
Palavras-chave: Health Economics and Policy.
Ano: 2004
URL: http://purl.umn.edu/20254

The Role of Productivity Growth and Farmers' Income Protection Policies in the Decline of Relative Farm Prices in the United States
Provedor de dados: 31
Autores: Miljkovic,   Dragan; Jin,   Hyun Joung; Paul,   Rodney.
The paper emphasizes three interrelated questions about the decline in relative farm to non-farm prices in the United States since 1973; 1) Is it unusual, 2) What caused it, and 3) Is it likely to continue? We find that based on historical and international evidence this phenomenon may be considered unusual. Separating farm price and income support in 1973 and growing relative productivity in agriculture has been the major contributor to changing the trend of the relative farm goods inflation. This trend is likely to continue based on predicted steady growth of relative agricultural productivity and continuation of direct payments and other forms of farm income support policies.
Tipo: Working or Discussion Paper
Palavras-chave: Government transfers; Productivity growth; Relative farm prices; Agricultural and Food Policy; Agricultural Finance; Productivity Analysis.
Ano: 2007
URL: http://purl.umn.edu/9368

Capital Use Intensity and Productivity Biases
Provedor de dados: 31
Autores: Andersen,   Matthew A.; Alston,   Julian M.; Pardey,   Philip G.
Measures of productivity growth are often pro-cyclical. This study focuses on measurement errors in capital inputs, associated with unobserved variations in capital utilization rates, as an explanation for the existence of pro-cyclical patterns in measures of agricultural productivity. Recently constructed national and state-specific indexes of inputs, outputs, and productivity in U.S. agriculture for 1949-2002 are used to estimate production functions in growth rate form that include proxy variables for changes in the utilization of durable inputs. The proxy variables include an index of farmers’ terms of trade and an index of local seasonal growing conditions. We find that utilization responses by farmers are significant and bias measures of productivity...
Tipo: Working or Discussion Paper
Palavras-chave: Productivity Analysis.
Ano: 2007
URL: http://purl.umn.edu/7314

Liberalization and Structural Change: Evidence from Nepalese Manufacturing
Provedor de dados: 31
Autores: Sharma,   Kishor.
The consequences of liberalization on structural changes are examined using data from manufacturing industry in Nepal which is classified as a least developed country. This is important because doubts that liberalization may not solve the problems of low-income developing countries remain strong due mainly to low supply elasticities and the early stage of industrialization. Results suggest some structural changes in manufacturing output and trade orientation. However, no significant improvements were recorded in the overall productivity growth and spatial distribution of manufacturing which appear to be due mainly to the lack of basic infrastructure and the shortage of skilled manpower. Thus, appropriate investment policies, which channel resources to...
Tipo: Working or Discussion Paper
Palavras-chave: Liberalization; Import penetration; Export intensity; Total factor productivity growth; Nepal; International Relations/Trade; E13; F13; F14; F43; 041.
Ano: 2000
URL: http://purl.umn.edu/28394

Research and agricultural productivity in Indonesia
Provedor de dados: 31
Autores: Warr,   Peter G.
Growth of total factor productivity has contributed 41 per cent of output growth in Indonesian agriculture since 1975. This study examines the extent to which publicly funded agricultural research within Indonesia has contributed to this productivity growth, while allowing for other possible determinants, including spillovers from international agricultural research, extension, weather changes, and government trade and subsidy policy. The econometric results imply a real annual rate of return to a marginal increase in Indonesian agricultural research expenditure of 27 per cent. Government-financed agricultural research explains 56 per cent of the observed increase in total factor productivity since 1975.
Tipo: Presentation
Palavras-chave: Production Economics; Research and Development/Tech Change/Emerging Technologies.
Ano: 2012
URL: http://purl.umn.edu/124475

World Economic Crises in Times of Environmental Scarcity and Wealth Concentration
Provedor de dados: 31
Autores: Lopez,   Ramon E.
Three new structural factors underlie the latest great world crisis: (1) the incorporation of highly populated countries into the growth process; (2) The increasing scarcity of the environment and certain natural resources; (3) the dramatic concentration of wealth and income in the advanced economies over the last two decades. These structural changes have significantly tightened the links between world growth and commodity demand, made the world commodity supply increasingly inelastic, and rendered economic growth more dependent on lax monetary and financial policies, respectively. All this may make the world economy highly vulnerable to crises and may make the recovery from the current crisis more difficult.
Tipo: Working or Discussion Paper
Palavras-chave: Demand and Price Analysis; Environmental Economics and Policy; International Development; International Relations/Trade; Resource /Energy Economics and Policy.
Ano: 2009
URL: http://purl.umn.edu/56408

Climate Policy and Petroleum Depletion in an Optimal Growth Framework
Provedor de dados: 31
Autores: Khanna,   Neha; Chapman,   Duane.
This payer presents a model framework and results that combine resource depletion with optimal economic growth and climate change in a macro-geoeconomic model. In doing so, the authors build upon the 'n Nordhaus DICE model to include the demands for coal, oil, and natural gas. These demands depend upon own price, prices of substitute fuels, per capita income, and population. The resource depletion model captures the effect on oil depletion of upward shifting demand curves which respond to population and income growth. A methodological advantage of including price, income, and population sensitive energy demand functions is that it allows substitution possibilities in the "production" of emissions. Furthermore, it allows the analysis of energy tax regimes...
Tipo: Working Paper
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 1997
URL: http://purl.umn.edu/121172

New Zealand Agricultural Policy Review: 1994-1996 I: Macro Policy
Provedor de dados: 31
Autores: Johnson,   R.W.M.
The period under review has seen a resurgence of economic growth in New Zealand with consequent improvements in employment and a turn-around in the fiscal deficit. Inflation has been controlled by strict monetary policy with consequent effects on the TWI. As a result, prices of tradable goods have been depressed in a period of growth. The agricultural export sector has been disadvantaged in this environment and shows little real growth in output but continues its remarkable productivity gains. The policy parameters for agriculture continue to be set in the macroenvironment as set out in previous reviews. This article brings up to date the discussion of national policy attitudes and performance of the agricultural sector while a second article sets out the...
Tipo: Journal Article
Palavras-chave: Agricultural and Food Policy.
Ano: 1996
URL: http://purl.umn.edu/12367

IMPACTS OF GROWTH STIMULANTS IN THE DOMESTIC LIVESTOCK SECTOR
Provedor de dados: 31
Autores: Peterson,   Everett B.; Preckel,   Paul V.; Hertel,   Thomas W.; McGuirk,   Anya M.
Many individuals are predicting a "second green revolution" in agriculture from the introduction of growth stimulants into the livestock industries. An economy-wide approach is used to determine the affects on prices and quantities of introducing growth stimulants in the domestic dairy and pork industries. In general, the impacts are found to be much smaller than previous research focused at the sectoral level has suggested. Increases in the amount of lean meat per hog, which reduces processor demand, may actually lead to a reduction in pork production at the farm-level.
Tipo: Working or Discussion Paper
Palavras-chave: Biotechnology; General equilibrium; Pork and dairy; Livestock Production/Industries.
Ano: 1992
URL: http://purl.umn.edu/116106

THE IMPACT OF LIFE EXPECTANCY IN HUMAN CAPITAL ACCUMULATION: AIDS
Provedor de dados: 31
Autores: Huang,   Rui; Fulginiti,   Lilyan E.; Peterson,   E. Wesley F.
A three period overlapping generations model is developed to investigate the impact of shorter life expectancy due to disease, on human capital investment decisions and income growth. This research is particularly relevant to Sub-Saharan Africa given the dramatic reduction in life expectancy due to HIV/AIDS and the potential lasting effects on growth. Our results indicate that as life expectancy shortens so does schooling inducing a lower growth rate of income.  These relationships are even more pronounced for the African continent than for the rest of the world.
Tipo: Conference Paper or Presentation
Palavras-chave: Health Economics and Policy; Labor and Human Capital.
Ano: 2003
URL: http://purl.umn.edu/35980

ESTIMATING CROP-SPECIFIC PRODUCTION GROWTH AND SOURCES IN CHINA
Provedor de dados: 31
Autores: Fang,   Cheng; Fan,   Shenggen.
This study uses aggregated provincial level data from 1979 to 2000 to estimate crop-specific production functions and identifies the sources of production growth for wheat, corn, soybean, rapeseeds, and cotton in China. The results show that fertilizer, pesticide, seeds, production specification, weather, and R&amp;D are important determinants of crop yields. The land, fertilizer, and R&amp;D are major contributors to production growth during the study period.
Tipo: Conference Paper or Presentation
Palavras-chave: Crop Production/Industries.
Ano: 2002
URL: http://purl.umn.edu/19669

Status and Development in the Dairy Sector in the BRIC
Provedor de dados: 31
Autores: Ramanovich,   Mikhail; Ndambi,   Asaah; Hemme,   Torsten.
Milk production is a very important element of the whole dairy chain. The BRIC countries are among the top 6 milk producing countries and produce nearly one third of the world’s total milk volume. A large number of dairy animals and a relatively low milk output per animal show a great potential of the BRIC for a further growth of production. In the same time the BRIC countries comprise 42% of world’s population. Expected population and prosperity growth will lead to a further growth in milk demand. The BRIC countries have a competitive level of milk production cost in international comparison. The success of the BRIC counties in the international milk market will depend on the contribution of all stakeholders in the dairy chain: farmers, processors,...
Tipo: Conference Paper or Presentation
Palavras-chave: Dairy sector; BRIC; Brazil; Russia; India; China; IFCN; Agribusiness.
Ano: 2011
URL: http://purl.umn.edu/115522

Aligning Incentives for Contract Dairy Heifer Growth
Provedor de dados: 31
Autores: Olynk,   Nicole J.; Wolf,   Christopher A.
As dairy farms grow and specialize in milking cows, raising replacement heifers is increasingly outsourced. Perhaps the largest challenge of outsourcing the heifer enterprise involves quality, measured as milk production potential, and the possibility for moral hazard due to hidden action on the part of the custom heifer grower. A principal-agent framework was used to elicit contract terms to provide incentives for the heifer grower to achieve desired growth rates, and enable the return of the heifer to the dairy farm on an accelerated time frame, without sacrificing quality. To mitigate incentive asymmetries, bonuses and deductions are proposed.
Tipo: Journal Article
Palavras-chave: Contracts; Heifer growth; Moral hazard; Principal agent; Livestock Production/Industries.
Ano: 2010
URL: http://purl.umn.edu/99109

OPTIMAL GROWTH STRATEGIES FOR PASTORAL FIRMS IN THE QUEENSLAND BRIGALOW SCHEME
Provedor de dados: 31
Autores: Harrison,   Stephen R.; Longworth,   John W.
The Brigalow Scheme has been one of Australia's largest dryland development projects since World War II. Large sums of private and public capital have been invested to create 247 new farm firms. Planning the development of these new properties is a complex task. A simulation model of the typical block in Area III of the Brigalow Scheme has been constructed and used to evaluate experimentally the financial performance of various growth strategies. Use of a conjugate directions search procedure with this model has allowed growth strategies to be identified which maximize net worth subject to a low risk of financial failure. These strategies are compared with development programmes which have already been implemented. Significant conclusions are reached both...
Tipo: Journal Article
Palavras-chave: Land Economics/Use.
Ano: 1977
URL: http://purl.umn.edu/22486

The Japanese Market for Imported Fruit Juices
Provedor de dados: 31
Autores: Feleke,   Shiferaw T.; Kilmer,   Richard L.
The objectives were to analyze the competitiveness of countries exporting fruit juices into Japan and simulate the effect of the negative Japanese population growth rate on fruit juice demand. The relative price version of the Rotterdam demand model was estimated for orange, grapefruit, other citrus, apple, pineapple and grape juices. Results indicate that most exporters can’t increase market share through price reductions. Product promotion and product differentiation is a more plausible option. The growth of fruit juice demand in Japan is expected to decrease over the period 2006 through 2020 for 11 of the 18 fruit juice/country combinations because of negative population growth rate.
Tipo: Journal Article
Palavras-chave: Competitiveness; Fruit juice; Japan; Rotterdam model; Population decline; Agribusiness; Agricultural and Food Policy; International Development; Q1.
Ano: 2009
URL: http://purl.umn.edu/92551

MEASURING THE COMPONENTS OF AGGREGATE PRODUCTIVITY GROWTH IN U.S. AGRICULTURE
Provedor de dados: 31
Autores: Capalbo,   Susan Marie.
A method of decomposing the growth in total factor productivity into effects due to nonconstant returns to scale and technical change was applied to the U.S. agricultural sector. The scale effects and technical changes were measured using an economically estimated two-output, three-input translog cost model. Total factor productivity as conventionally measured grew at an average annual rate of 1.56% from 1950-82. This growth rate, however, misrepresented the rate of technical change in U.S. agriculture primarily due to the nonconstant scales effects.
Tipo: Journal Article
Palavras-chave: Productivity Analysis.
Ano: 1988
URL: http://purl.umn.edu/32146

Political Economy of Endogenous Growth (Revised)
Provedor de dados: 31
Autores: Mohtadi,   Hamid; Roe,   Terry L.
Using an endogenous growth framework, this paper analyzes the impact of lobbying for public goods on the long run steady-state growth rate of the economy. A socially optimal level of lobbying can be found to exist in the absence of a social planner. Atomistic households, however, exceed this level by viewing taxes as fixed, ignoring the aggregate tax impact of lobbying via increased public expenditures. Two extensions are presented. In one, anti-tax lobbying is analyzed, drawing parallel results. In another, a quasi-public good is introduced, lobbying for which is based not on altruism, but on private gains, though public gains occur as a side effect.
Tipo: Working or Discussion Paper
Palavras-chave: Political Economy.
Ano: 1991
URL: http://purl.umn.edu/7502

FARM WORK, HOME WORK AND INTERNATIONAL PRODUCTIVITY DIFFERENCES
Provedor de dados: 31
Autores: Gollin,   Douglas; Parente,   Stephen L.; Rogerson,   Richard.
Agriculture’'s share of economic activity is known to vary inversely with a country’'s level of development. This paper examines whether extensions of the neoclassical growth model can account for some important sectoral patterns observed in a current cross-section of countries and in the time series data for currently rich countries. We find that a straightforward agricultural extension of the neoclassical growth model restricted to match U.S. observations fails to account for important aspects of the cross-country data. We then introduce a version of the growth model with home production, and we show that this model performs much better.
Tipo: Conference Paper or Presentation
Palavras-chave: Agribusiness; Productivity Analysis.
Ano: 2000
URL: http://purl.umn.edu/21797

Accounting for Bads in the Measurement of Productivity Growth: A Cost Indirect Malmquist Productivity Measure and it Application to U.S. Agriculture
Provedor de dados: 31
Autores: Ball,   V. Eldon; Fare,   Rolf; Grosskopf,   Shawna; Zaim,   O.; Nehring,   Richard F.
This paper starts with the basic premise that the conventional measures of productivity growth, which ignore joint production of good and bad outputs, are biased. We then construct an alternative productivity growth measure using activity analysis. An application to U.S. agriculture demonstrates its usefulness.  More specifically, we show that the Tornqvist index of productivity is biased upward when production of undesirable outputs or "bads" is increasing. Conversely, this same measure of productivity is biased downward when externalities in production are decreasing.
Tipo: Conference Paper or Presentation
Palavras-chave: Productivity Analysis.
Ano: 2001
URL: http://purl.umn.edu/20442

MARKET ASSESSMENT MODELS FOR U.S. AGRICULTURAL EXPORTS
Provedor de dados: 31
Autores: Salvacruz,   Joseph C.; Reed,   Michael R.; Mather,   David.
The growth rate of the United States' agricultural exports to its trading partners was predicted using some measures of each country's past macroeconomic conditions. The model which applies a five-year lag basis predicted better than that which utilizes a ten-year lag. Results show that the significant determinants of the growth rate of U.S. agricultural exports include the importing countries' GDP growth rate, agricultural self-sufficiency, population density, and distance from the United States.
Tipo: Journal Article
Palavras-chave: International Relations/Trade.
Ano: 1992
URL: http://purl.umn.edu/27194

The Influence of Credit on Farm Growth
Provedor de dados: 31
Autores: Ockwell,   Anthony P.; Batterham,   Robert L.
This study was based on the hypothesis that lenders to the rural sector have the potential to affect the rate of agricultural adjustment directly via capital formation. Multi-period linear programming models were developed to quantify the effects of lender policy on farm growth for wheat growing, dairy and sheep properties. Three basic models were used to represent different farm management types for each industry group of models. The models included the production, marketing, taxation, consumption and investment subsystems of the farm. Emphasis in these models was focused on the financial linkages between these various subsystems. In particular, the models investigated the effects of increases in trading bank credit on farm growth.
Tipo: Journal Article
Palavras-chave: Agricultural Finance; Farm Management.
Ano: 1982
URL: http://purl.umn.edu/12523

MEASUREMENT OF AGRICULTURAL TOTAL FACTOR PRODUCTIVITY GROWTH INCORPORATING ENVIRONMENTAL FACTORS: A NUTRIENTS BALANCE APPROACH
Provedor de dados: 31
Autores: Hoang,   Viet-Ngu; Coelli,   Tim J.
This paper develops a new measure of total factor productivity growth in agricultural production which incorporates environmental effects. The new measure is called the Total Factor Nutrient-Orientated Productivity (TFNP) Index, and incorporates a materials balance condition. TFNP measures changes in nutrient-orientated efficiency and can be decomposed into efficiency change (EC), technological change (TC) and nutrient-orientated technological change (NTC) components. An empirical analysis, involving country-level data from OECD countries during 1990-2003, is provided using DEA methods. Estimates of mean technical and nutrient-orientated efficiency are 0.798 and 0.526, respectively. Estimated mean TFNP growth is 1.5% per year, with nutrient-orientated...
Tipo: Conference Paper or Presentation
Palavras-chave: Total factor productivity; Environment; Nutrient balance; DEA; Productivity Analysis; Environmental Economics and Policy.
Ano: 2009
URL: http://purl.umn.edu/47636

Policy Reform and Productivity Change in Chinese Agriculture: A Distance Function Approach
Provedor de dados: 31
Autores: Brümmer,   Bernhard; Glauben,   Thomas; Lu,   Wencong C.
Agricultural policy reform has been an important source of change in the Chinese agricultural sector. The reforms led to productivity growth and helped China in pursuing its self-sufficiency goal especially in the grain sector. To analyse whether observable productivity growth stems from technologically induced components, or from the market induced parts, a multi-input-multi-output model is derived using an econometric distance function framework. A decomposition allows to distinguish allocative effects, scale effects, technological change, and technical efficiency change. Data on farms in Zhejiang from 1986 to 1999 are used to analyse the impact of policy reform.
Tipo: Conference Paper or Presentation
Palavras-chave: Productivity growth; China; Policy reform; Distance function; Productivity Analysis.
Ano: 2002
URL: http://purl.umn.edu/24779

Rural Growth Linkages in the Eastern Cape Province of South Africa
Provedor de dados: 31
Autores: Ngqangweni,   Simphiwe.
This report addresses the impact of rising smallholder incomes on local nonagricultural development in the Eastern Cape of South Africa. It determines how increased rural incomes are spent on a mix of goods and services, and debates the implications of these spending patterns for growth in rural areas through the alleviation of demand constraints. These results make it possible to identify areas of intervention necessary for sustaining growth originating from stimulus to tradable agriculture from economic reforms. This report thus contributes to an emerging literature on the possible impact of promoting smallholder agriculture in South Africa on rural livelihoods.
Tipo: Working or Discussion Paper
Palavras-chave: Income; Agricultural development; Southern Africa; Consumer behavior; Community/Rural/Urban Development.
Ano: 1999
URL: http://purl.umn.edu/97391

Investing in Hope:  AIDS, Life Expectancy, and Human Capital Accumulation
Provedor de dados: 31
Autores: Huang,   Rui; Fulginiti,   Lilyan E.; Peterson,   E. Wesley F.
A three period overlapping generations model is developed to investigate the impact of shorter life expectancy due to disease, on human capital investment decisions and income growth. This research is particularly relevant to Sub-Saharan Africa given the dramatic reduction in life expectancy due to HIV/AIDS and the potential lasting effects on growth. Our results indicate that as life expectancy shortens so does schooling inducing a lower growth rate of income.  These relationships are even more pronounced for the African continent than for the rest of the world.
Tipo: Conference Paper or Presentation
Palavras-chave: Labor and Human Capital.
Ano: 2003
URL: http://purl.umn.edu/25808

Diversity of Communities and Economic Development: An Overview
Provedor de dados: 31
Autores: Ranis,   Gustav.
This paper reviews the literature on the impact of ethnic diversity on economic development. Ethnically polarized societies are less likely to agree on the provision of public goods and more likely to engage in rent seeking activities  providing lower levels of social capital. Initial conditions are important determinants of adverse development outcomes.  The role of decentralization, democracy and markets as potential remedies are discussed.  The paper then presents a number of preliminary hypotheses on the relationship between diversity and instability in order to stimulate future research.
Tipo: Working or Discussion Paper
Palavras-chave: Africa; Diversity; Economic Growth; Instability; Institutional and Behavioral Economics; International Development; Political Economy; O11; O40; O43; O55.
Ano: 2011
URL: http://purl.umn.edu/115713

Explaining Growth in Dutch Agriculture: Prices, Public R&amp;D, and Technological Change
Provedor de dados: 31
Autores: Jongeneel,   Roelof A.; Ge,   Lan.
This paper analyzes the sources of growth of Dutch agriculture (arable, meat, and dairy sectors). Because the time series data (1950-1997) are non-stationary and not cointegrated, it is argued that a model estimated in first differences should be used. Estimated price elasticities turn out to be very inelastic, both in the short-run and the long-run. The direct distortionary effect of price support has therefore been rather limited. However, price support has an important indirect effect by improving the sectors investment possibilities and therewith the capital stock. Public R&amp;D expenditure mainly affected agriculture by contributing to yield improvement therewith favoring intensification of production.
Tipo: Conference Paper or Presentation
Palavras-chave: Growth; Technology; Cointegration; Non-stationarity; Agricultural policy; Agribusiness; Q18; O13.
Ano: 2005
URL: http://purl.umn.edu/24573

The Environmental Kuznets Curve from Multiple Perspectives
Provedor de dados: 31
Autores: Jaeger,   William K.; Kolpin,   Van.
The analysis finds that in addition to U-shaped paths of environmental quality arising for growth in income per capita, growth in population can also produce socially efficient patterns that are U-shaped. Sufficient conditions for both types of paths are identified for a range of models and parameters, including symmetrical models with homothetic, constant-returns functions such as with CES functions. Similar results are also shown to arise in decentralized economies under either homogeneous or heterogeneous income levels.
Tipo: Working or Discussion Paper
Palavras-chave: Environmental Kuznets Curve; Economic Growth; Environmental Quality; Q2; D61; O13.
Ano: 2008
URL: http://purl.umn.edu/36760

A Spatial Simultaneous Growth Equilibrium Modeling of Agricultural Land Development in the Northeast United States
Provedor de dados: 31
Autores: Hailu,   Yohannes G.; Brown,   Cheryl.
This study aims to understand the relationship between regional growth in population, employment, and per capita income, and agricultural land values and development in the Northeast United States. A system of spatial simultaneous equations is estimated using three-stage-least squares on county level data. Results indicate that regional growth positively influences agricultural land values and negatively affects the stock of agricultural lands. Farm performance and some farmland protection policies were not effective in preserving farmland. The study recommends that agricultural land protection policies could be better coordinated at a regional level and more effective if integrated within state economic development programs.
Tipo: Conference Paper or Presentation
Palavras-chave: Land Economics/Use.
Ano: 2006
URL: http://purl.umn.edu/21082

The Differential Impact of Regional Policies on Economic Growth: One Size Does Not Fit All
Provedor de dados: 31
Autores: Nizalov,   Denys; Loveridge,   Scott.
We analyze the impact of Michigan economic development policies and highway infrastructure improvements on per capita income and job growth in 1990s using fixed effect estimation procedure. We also improve measurement of policy treatment while accounting for possible spillover effect. The policies considered for analysis have significant impact on growth outcomes. However this effect is non-linear. The size of this impact changes over time and the path of change varies by type of policy. Policy impacts are different between metro and non-metropolitan areas. Also, cross-policy effects are found. The results can assist decision makers in targeting policies.
Tipo: Conference Paper or Presentation
Palavras-chave: Public Economics.
Ano: 2005
URL: http://purl.umn.edu/19360

Firing Costs: Eurosclerosis or Eurosuccesses?
Provedor de dados: 31
Autores: Chen,   Yu-Fu; Snower,   Dennis; Zoega,   Gylfi.
In this paper we analyse the employment implications of firing restrictions. We find that when a recession is expected and the trend rate of productivity growth is small, a rise in firing costs affects mainly the hiring decision. Thus there is a negative effect on average employment. When, on the other hand, a boom is expected and the rate of productivity growth is large, firing costs affect mainly the firing decision. Then, as a result, average employment is increased. Our analysis suggests that while firing restrictions might have stimulated employment and reduced unemployment in Europe in the first two decades following World War II - when large supply shocks were absent and the average rate of growth was high - these same restrictions may have had the...
Tipo: Working or Discussion Paper
Palavras-chave: Labor and Human Capital.
Ano: 1999
URL: http://purl.umn.edu/26177

Natural Resources Endowment and Economic Growth in the Southeastern United States
Provedor de dados: 31
Autores: Elliott,   Vaughn M., II; Hartarska,   Valentina M.; Bailey,   Conner.
Using forest concentration data from Alabama, Arkansas, Georgia, Kentucky, Louisiana, North Carolina, South Carolina, and Virginia, this paper test whether or not the low-level of economic growth is related to forest resource intensity and Dutch Disease. Specifically, cross sectional data from 815 counties are used to evaluate how changes personal income growth is affected by concentration of forestry resources, government and business investment, educational investment and consumption. We find evidence that the county economies in the South may suffer from Dutch Disease.
Tipo: Conference Paper or Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2007
URL: http://purl.umn.edu/9990

AN ANALYSIS OF TOTAL FACTOR PRODUCTIVITY GROWTH IN CHINA'S AGRICULTURAL SECTOR
Provedor de dados: 31
Autores: Hsu,   Shih-Hsun; Yu,   Ming-Miin; Chang,   Ching-Cheng.
A panel data of 27 provinces in China is used to analyze the productivity growth in China's agricultural sector over the period 1984-1999.  We first compute the output-orientated Malmquist productivity indexes and its decompositions using non-parametric DEA (Data Envelopment Analysis) approach.  Tobit regressions are then used to identify the major determinants of TFP growth and its components.
Tipo: Conference Paper or Presentation
Palavras-chave: Productivity Analysis.
Ano: 2003
URL: http://purl.umn.edu/22227

How Fast are Small Tourist Countries Growing? The 1980-2003 Evidence
Provedor de dados: 31
Autores: Pigliaru,   Francesco; Brau,   Rinaldo; Lanza,   Alessandro.
We analyze the empirical relationship between growth, country size and tourism specialization by using a dataset covering the period 1980-2003. We find that tourism countries grow significantly faster than all the other sub-groups considered in our analysis. Tourism appears to be an independent determining factor for growth, and the reason for that is neither because they are poorer than the average, nor because they are very open to trade. Another finding of our paper is that small states are fast-growing only when they are highly specialized in tourism. In contrast with some previous conclusions in the literature, smallness per se is not good for growth.
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 2007
URL: http://purl.umn.edu/12129

RURAL-URBAN ECONOMIC LINKAGES FOR AGRICULTURE AND FOOD PROCESSING IN THE MONROE, LOUISIANA, FUNCTIONAL ECONOMIC AREA
Provedor de dados: 31
Autores: Hughes,   David W.; Litz,   Vaneska N.
An interregional input-output model of the Monroe, Louisiana, Functional economic area constructed with IMPLAN is used to assess economic linkages between a mall urban core and a surrounding rural periphery. The contribution of agriculture, especially in the rural periphery, to the urban core (Ouachita parish) economy is demonstrated. Also assessed is the possibility of using the core's food processing sector to facilitate periphery economic growth. While results demonstrated stronger rural-urban linkages than have been found in other regions, growth in the urban food processing industry as currently structured, did not imply rapid growth in the periphery.
Tipo: Journal Article
Palavras-chave: Economic linkages; Food processing; Functional Economic Area; IMPLAN; Interregional input-output model; Rural periphery; Urban core; Agribusiness.
Ano: 1996
URL: http://purl.umn.edu/15110

A Comparative Analysis of the Development of the United States and European Union Biodiesel Industries
Provedor de dados: 31
Autores: Carriquiry,   Miguel A.
Worldwide production of biodiesel is growing at a rapid pace. Arguably, the European Union (EU) is the global leader in biodiesel production, but the United States has recently expanded its production. The growth of the biodiesel industry in both regions has been fueled by a series of government-provided financial incentives. However, the timing of the growth and incentive provisions, the nature of the main incentives, and the market conditions differ across regions. This article provides a comparative analysis of the EU and U.S. biodiesel industries, highlighting market and policy aspects that are leading to a rapid but distinct growth.
Tipo: Working or Discussion Paper
Palavras-chave: Biodiesel; Biodiesel industry; Biodiesel quality; Biofuels; Energy security; Rapeseed oil; Rapeseed methyl ester; Soybean oil; Soydiesel; Ultra low sulfur diesel; Resource /Energy Economics and Policy.
Ano: 2007
URL: http://purl.umn.edu/9081

Contribution of Wheat Diversity to Total Factor Productivity in China
Provedor de dados: 31
Autores: Jin,   Songqing; Meng,   Erika C.H.; Hu,   Ruifa; Rozelle,   Scott; Huang,   Jikun.
The impact of wheat diversity on the productivity of wheat in China is examined using total factor productivity (TFP) and an instrumental variable approach.  TFP in seven key wheat-producing provinces in China shows significant, though variable, growth for all provinces during the period 1982-1995.  Analysis of the causes of TFP growth tests alternative taxonomies of wheat diversity (named varieties and morphological groups) and three measures of diversity.  The analysis shows significant effects of diversity on TFP with results consistent across taxonomies and measures of diversity.  Further decomposition of the estimation results confirms the relative magnitude of impact of wheat diversity on TFP growth.
Tipo: Journal Article
Palavras-chave: Agricultural productivity; China; Crop diversity; Diversity index; Total factor productivity; Wheat; Crop Production/Industries; Production Economics.
Ano: 2008
URL: http://purl.umn.edu/46555

MARKETS, TRADE AND THE ROLE OF INSTITUTIONS IN AFRICAN DEVELOPMENT
Provedor de dados: 31
Autores: Roe,   Terry L.
This paper focuses on the interdependence between international trade and in institutional reform, and suggests that the trade barriers erected by advanced countries to the agricultural exports from poor countries, and sub-Saharan agriculture in particular, are a barrier to economic growth and development.  Drawing upon recent literature, the suggestion is that trade barriers inhibit institutional reform which is a major factor affecting economic growth. An empirical analysis of trade reform and economic growth shows that sub-Saharan economies can repeat potential gains from increased trade that are larger when such integration with world markets induces institutional reform.
Tipo: Conference Paper or Presentation
Palavras-chave: Institutional and Behavioral Economics; International Development; International Relations/Trade.
Ano: 2003
URL: http://purl.umn.edu/28069

Rural Non-farm Development in China and India: The Role of Policies and Institutions
Provedor de dados: 31
Autores: Mukherjee,   Anit; Zhang,   Xiaobo.
The dynamic rural nonfarm sector in China has been a major contributor to the country’s remarkable growth, while in India the growth in output and employment in this sector has been rather stagnant. The paper argues that the observed patterns in the rural nonfarm development are the results of institutional differences between the two countries, especially in their political systems, ownership structure, and credit institutions. A review of the strengths and weaknesses of the rural nonfarm economy in China and India highlights the potentials and challenges of growth in the sector.
Tipo: Working or Discussion Paper
Palavras-chave: Industrial policy; Policy research; Non-farm development; International Development.
Ano: 2005
URL: http://purl.umn.edu/58387

Smallholder Income Diversification in Zambia: The Way Out of Poverty?
Provedor de dados: 31
Autores: Bigsten,   Arne; Tengstam,   Sven.
1) One can achieve poverty reduction in rural areas of Zambia by both growth and inequality reduction, but growth must be the main driver; 2) Rural income growth does not come from agriculture alone so options to diversify income are very important and should be pursued; 3) But careful attention is required to focus on improved endowments and reduced constraints facing households trying to improve agriculture directly as well as trying to improve possibilities of income diversification away from agriculture; and 4) Land per labourer, education, and location (market access and infrastructure) are key dimensions to understand and figure out how to improve.
Tipo: Report
Palavras-chave: Food security; Food policy; Zambia; Small holder; Poverty; Income; Farm Management; Food Security and Poverty; Q20.
Ano: 2008
URL: http://purl.umn.edu/54637

Farm growth in Hungary, Slovenia and France
Provedor de dados: 31
Autores: Bakucs,   Lajos Zoltan; Bojnec,   Stefan; Ferto,   Imre; Latruffe,   Laure.
The article investigates the validity of Gibrat’s Law for French, Hungarian and Slovenian farms with FADN data and Heckman selection models, quantiles regressions and panel unit root tests. The contribution to the literature is threefold. First, we compare farm growth in countries with rather different farm structures. Second, we apply two different testing techniques. Finally, we focus on specialised crop and dairy farms rather than all farms, avoiding biases due to heterogeneous structures across the agricultural sector. Results reject the Gibrat’s Law for crop farms in France (except for one sub-period) and Hungary but confirm it for French and Slovenian dairy farms.
Tipo: Conference Paper or Presentation
Palavras-chave: Farm growth; Gibrat's Law; Panel unit root; Quintile regression; Agricultural and Food Policy; Farm Management.
Ano: 2010
URL: http://purl.umn.edu/60911

STRUCTURE OF THE GLOBAL MARKETS FOR MEAT
Provedor de dados: 31
Autores: Dyck,   John H.; Nelson,   Kenneth E.
Meat trade flows among countries and world regions are determined largely by differences among countries in their resource base, their preferences for meat types and cuts, the extent and character of barriers to trade, and the industry structure. Future growth of meat trade depends on further liberalization of protectionist barriers, eradication of animal diseases, economic development, and population growth. Trade growth is likely to feature greater complexity in trade patterns, with more countries engaging in trade, and with an increased tendency for individual countries to import and export meat cuts and offal from the same animal species.
Tipo: Report
Palavras-chave: Meat trade; Competitiveness; Trade policy; Sanitary barriers; Consumer preferences; Industrial structure; Industrial Organization; International Relations/Trade; Livestock Production/Industries.
Ano: 2003
URL: http://purl.umn.edu/33701

SOME GENERAL EQUILIBRIUM EFFECTS OF MINING GROWTH ON THE ECONOMY
Provedor de dados: 31
Autores: Stoeckel,   Andrew B.
The effects of mining sector growth are analysed with a five-sector general equilibrium model. The effect of the mineral discoveries is to cause the agricultural sector to contract, but to cause the import-competing sector to expand by a small amount--a result which differs from Gregory's (1976) analysis. However, a mining boom caused by increases in external demand, rather than by new discoveries, leads to a different set of results. Some likely effects of the boom on the growth rates of the different sectors in the economy are reported. Finally, the effects of an export tax on minerals are considered.
Tipo: Journal Article
Palavras-chave: Community/Rural/Urban Development; Resource /Energy Economics and Policy.
Ano: 1979
URL: http://purl.umn.edu/22599

The Solaria Syndrome: Social Capital in a Growing Hyper-technological Economy
Provedor de dados: 31
Autores: Antoci,   Angelo; Sabatini,   Fabio; Sodini,   Mauro.
We develop a dynamic model to analyze the sources and the evolution of social participation and social capital in a growing economy characterized by exogenous technical progress. Starting from the assumption that the well-being of agents basically depends on material and relational goods, we show that the best-case scenarios hold when technology and social capital both support just one of the two productions at the expenses of the other. However, trajectories are possible where technology and social interaction balance one another in fostering the growth of both the social and the private sector of the economy. Along such tracks, technology may play a crucial role in supporting a “socially sustainable” economic growth.
Tipo: Working or Discussion Paper
Palavras-chave: Technology; Economic Growth; Relational Goods; Social Participation; Social Capital; Research and Development/Tech Change/Emerging Technologies; O33; J22; O41; Z13.
Ano: 2010
URL: http://purl.umn.edu/93415

Why is Agricultural Labour Productivity higher in some countries than others?
Provedor de dados: 31
Autores: Gutierrez,   Luciano.
Agriculture productivity varies dramatically in different regions of the world. Using recent theories of economic growth and recently provided data sets, this study finds some empirical regularities between agricultural labour productivity growth, investment and education, as well as environmental factors, for 44 countries during the period 1980-1993. I find strong evidence that where agricultural investment and educated people rates are higher, agricultural labour productivity grows faster. Secondly, geographical factors as well as freer trade influence growth.  Finally, I find evidence of conditional convergence, which means that cross-country agricultural productivity does not converge to the same level of steady-state but that productivity in each...
Tipo: Journal Article
Palavras-chave: Labor and Human Capital.
Ano: 2002
URL: http://purl.umn.edu/26431

A Growth-Focused Spatial Econometric Model of Agricultural Land Development in the Northeast
Provedor de dados: 31
Autores: Hailu,   Yohannes G.; Brown,   Cheryl.
Using county data for West Virginia, Maryland, and Pennsylvania, estimation of a system of simultaneous equations shows that population growth, higher taxes, high farmland value, and high initial per capita income accelerate farmland development, but return on farmland, government assistance to farmers, farmland conservation, and farming agglomeration reduce development pressure.
Tipo: Conference Paper or Presentation
Palavras-chave: Farmland; Development; Regional growth; Policy; Equilibrium model; Spatial autocorrelation; Land Economics/Use.
Ano: 2005
URL: http://purl.umn.edu/19488

China's Growth, World Food Prices, and Developing Countries Exports
Provedor de dados: 31
Autores: Villoria,   Nelson.
This paper explores the impacts of China's growth in the international markets of agricultural products. These impacts are important because they are related to two different ongoing discussions about the role of China in the world economy. One of these discussions have to do with China as a source of price inflation while the other has to do with China as an engine of growth for developing countries, in this case, through increased export opportunities. Our results suggest that China has been a source of aggregated mild price inflation in the largest developed economies that occupy the first ranks as food importers. This is probably related to a more intense pressure on world food supplies. When we look at the counterfactual exports of selected exporters,...
Tipo: Conference Paper or Presentation
Palavras-chave: Gravity; China; Food prices; International Development; International Relations/Trade.
Ano: 2009
URL: http://purl.umn.edu/49398

Fiscal Policies in Highly Unequal Societies: Implications for Agricultural Growth
Provedor de dados: 31
Autores: Lopez,   Ramon E.
The paper discusses the economic effects of misallocation of public expenditures in favor of private goods rather than public goods. It first lays out certain key hypotheses regarding the consequences of the apparent public sector allocation inefficiency and the factors that explain this phenomenon. It then discusses existing empirical evidence that lends at least indirect support to these hypotheses. Finally, it presents new empirical evidence for the rural sector in Latin America which documents the extent of the misallocation of public expenditures, its consequences for agricultural growth and rural poverty, and the role of certain key politico-institutional factors in explaining the misallocation.
Tipo: Journal Article
Palavras-chave: Public expenditure; Public goods; Agricultural growth; Subsidies; Social equity; International Development; H40; H41; H42; O13; Q15; Q18.
Ano: 2007
URL: http://purl.umn.edu/112595

CAPITALISM IN HUMAN SCALE: ARE THERE "VIRTUOUS CIRCLES" IN ECONOMIC GROWTH AND HUMAN DEVELOPMENT IN ACHIEVING A NEWLY INDUSTRIALIZED COUNTRY STATUS?
Provedor de dados: 31
Autores: Mendis,   Patrick.
The purpose of this paper is two-fold: the first part is to understand the "virtuous circles" of economic growth and human development; the second part is to review the development literature related to this discussion. For this, the evolving development strategies of Sri Lanka and South Korea and the seemingly convergent two schools of thinking are briefly outlined in Section II. Section III surveys the pace of economic and human progress to give a broad background of the debate. Section IV analyzes the economic growth and human development in selected Industrialized Countries, Newly Industrialized Countries (NICs), Emerging NICs, and Aspiring South Asian neighbors of Sri Lanka...In the second part of the paper, a discussion of economic development...
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 1995
URL: http://purl.umn.edu/13901

ECONOMICS OF VARIABLE SWINE GROWTH
Provedor de dados: 31
Autores: Parsons,   Jay R.; Hoag,   Dana L.; Koontz,   Stephen R.
This paper addresses the economic impacts of swine growth variability.  Different economic penalties are determined to be associated with over-finishing versus under-finishing an animal.  Marketing decisions based on the pen average are determined to be insignificantly less than optimal for a case study data set of 350 swine.  Sensitivity analysis is conducted to determine the impact of increased growth and price variability.
Tipo: Conference Paper or Presentation
Palavras-chave: Livestock Production/Industries.
Ano: 2001
URL: http://purl.umn.edu/36082

Economic Growth, Comparative Advantage and Agricultural Trade of Pacific Rim Countries
Provedor de dados: 31
Autores: Anderson,   Kym.
While agriculture's contribution to national output and employment tends to decline with economic growth, its contribution to exports need not. Neoclassical theory suggests that a country's comparative advantage in agriculture depends on its endowment of agricultural land relative to mineral resources and nonfarm capital, compared with endowment ratios in other countries. Over time, a country's agricultural comparative advantage will decline faster, the faster its mineral extraction, its growth in nonfarm capital per worker and its rates of nonfarm relative to farm technological change, again compared with other countries. Empirical support for this theory is provided by evidence from the diverse set of economies on the Pacific rim. The paper concludes...
Tipo: Journal Article
Palavras-chave: International Relations/Trade.
Ano: 1983
URL: http://purl.umn.edu/12518

What Does Initial Farm Size Imply About Growth and Diversification?
Provedor de dados: 31
Autores: Melhim,   Almuhanad; O'Donoghue,   Erik J.; Shumway,   C. Richard.
Recent consolidation in agriculture has shifted production toward fewer but larger farms, reshaping business relationships between farmers, processors, input suppliers, and local communities. We analyze growth and diversification of U.S. corn, wheat, apple, and beef farms by examining longitudinal changes in 10 size cohorts through three successive censuses. We fail to reject Gibrat’s law in apple and wheat industries and the mean reversion hypothesis in beef and corn industries. Apple and wheat farms diversify over time. The findings suggest that scale economies diminish for large farms across all four industries and scope economies dominate scale economies for large apple and wheat farms.
Tipo: Journal Article
Palavras-chave: Diversification; Firm growth; Gibrat’s law; Longitudinal data; Scale economies; Scope economies; Agribusiness; Farm Management; Production Economics; Q12.
Ano: 2009
URL: http://purl.umn.edu/48757

Reconsidering The Impact of Environment on Long-Run Growth When Pollution Influences Health and Agents Have  Finite-Lifetime
Provedor de dados: 31
Autores: Pautrel,   Xavier.
Using an overlapping generation model à la Blanchard (1985) with human capital accumulation, this article demonstrates that the influence of environment on optimal growth in the long-run may be explained by the detrimental effect of pollution on life expectancy. It also shows that, in such a case, greener preferences are growth- and welfare-improving even if the ability of the agents to learn is independent to pollution and utility is additively separable. Finally, it establishes that it is possible to implement a win-win environmental policy.
Tipo: Working or Discussion Paper
Palavras-chave: Environmental Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/12027

Diversity of Communities and Economic Development: An Overview
Provedor de dados: 31
Autores: Ranis,   Gustav.
This paper reviews the literature on the impact of ethnic diversity on economic development. Ethnically polarized societies are less likely to agree on the provision of public goods and more likely to engage in rent seeking activities  providing lower levels of social capital. Initial conditions are important determinants of adverse development outcomes.  The role of decentralization, democracy and markets as potential remedies are discussed.  The paper then presents a number of preliminary hypotheses on the relationship between diversity and instability in order to stimulate future research.
Tipo: Working or Discussion Paper
Palavras-chave: Africa; Diversity; Economic Growth; Instability; International Development; O11; O40; O43; O55.
Ano: 2009
URL: http://purl.umn.edu/54531

Exploration of Priority Strategies for Harmonious Development between Urbanization and the Construction of New Countryside in China Based on the Theory of Unbalanced Growth
Provedor de dados: 31
Autores: Liang,   Ying; Cai,   Cheng-zhi.
Based on the theory of unbalanced growth, we analyze priority strategy of different regions in China. It is prior to enhance the quality of urbanization in the East, make a long-term planning for construction of small towns, focus on harmony between human and nature, so as to realize its development to integrate with international urbanization level. For the middle areas, urbanization and construction of new countryside should be developed simultaneously, take a road of interactive development of urban and rural areas, finally to raise the level of urbanization. As to the western areas, it is required to firstly build new countryside, focus on construction of infrastructural facilities, adjust and optimize structure of agricultural production, and push...
Tipo: Article
Palavras-chave: Unbalanced growth; Urbanization; Construction of new countryside; Priority; China; Agribusiness.
Ano: 2011
URL: http://purl.umn.edu/121288

When Government Spending Serves the Elites: Consequences for Economic Growth in a Context of Market Imperfections
Provedor de dados: 31
Autores: Lopez,   Ramon E.; Islam,   Asif M.
Government spending should be regarded as a social and political phenomenon, not merely as a technical choice. We argue that there is an implicit contract between the organized elites and politicians which often leads to a pro-elite allocation of public resources. A natural and simple taxonomy of government spending follows from this view: spending in public goods broadly defined which mitigate market failures versus spending in non-social subsidies, mainly a vehicle to serve the elites. We theoretically and empirically show that pro-elite spending biases are costly in terms of economic growth. The empirical findings are exceptionally robust.
Tipo: Working or Discussion Paper
Palavras-chave: Government spending; Economic growth; Market imperfections; Investment; Subsidies; International Development; Labor and Human Capital; Political Economy; Public Economics.
Ano: 2008
URL: http://purl.umn.edu/45875

The Role of Income Growth in Emerging Markets and the BRICs in Agrifood Trade
Provedor de dados: 31
Autores: Haq,   Zahoor Ul; Meilke,   Karl D.
This study develops an import demand model to explore the role of income in explaining the trade performance of low, middle and high-income countries with a special emphasis on Brazil, Russia, India and China – the BRIC economies. The study estimates the impact of the growth in per capita income on the trade of agrifood products using data for 52 countries and 20 agrifood products for the years 1990 to 2006. The results suggest that China, Russia and Brazil have more income elastic import demand than other middle-income countries. Conversely, the income elasticities of import demand in India are similar to other low-income countries and for the most part statistically equal to zero.
Tipo: Working or Discussion Paper
Palavras-chave: Emerging economies; BRIC economies; Food trade; Income elasticities; Economic growth; Agricultural and Food Policy; International Development; International Relations/Trade.
Ano: 2009
URL: http://purl.umn.edu/48122

Linkages Between Agricultural Growth and Improved Child Nutrition in Mali
Provedor de dados: 31
Autores: Tefft,   James F.; Penders,   Christopher L.; Kelly,   Valerie A.; Staatz,   John M.; Yade,   Mbaye; Wise,   Victoria.
This paper presents the results of the first phase of a project aimed at analyzing the links between agricultural growth in Mali and child nutritional status. The objective of this project is to strengthen these links through applied research and extension. The first phase of the project was designed to generate hypotheses concerning the relationship and review existing data to test these hypotheses, generate new hypotheses and draw policy implications. The second phase of this project will carry out in-depth research to address the critical questions left unanswered in phase I and initiate actions designed to improve these links.
Tipo: Report
Palavras-chave: Food security; Food policy; Child nutrition; Mali; Agricultural growth; Food Consumption/Nutrition/Food Safety; International Development; Downloads July 2008-July 2009: 13; I1.
Ano: 2000
URL: http://purl.umn.edu/54575

SPATIAL LABOR MARKETS AND TECHNOLOGY SPILLOVERS - ANALYSIS FROM US MIDWEST
Provedor de dados: 31
Autores: Monchuk,   Daniel C.; Miranowski,   John A.
The primary focus of this paper is the impact of knowledge creation and innovative activity on employment growth. A number of employment growth hypotheses are tested for counties in Iowa, Minnesota, Missouri, Kansas, Nebraska, South Dakota and North Dakota. We assume that new knowledge and innovative activity are embodied in patent filings for the years 1975-2000. Due to the spatial nature of the data, both spatially lagged dependant variables and spatial error models are employed.  The results support the importance of knowledge creation and innovative activity as an important factor explaining employment growth in Heartland counties over the 1969-2000 period.
Tipo: Conference Paper or Presentation
Palavras-chave: Labor and Human Capital.
Ano: 2003
URL: http://purl.umn.edu/22250

Do the Largest Firms Grow the Fastest? The Case of U.S. Dairies
Provedor de dados: 31
Autores: Melhim,   Almuhanad; O'Donoghue,   Erik J.; Shumway,   C. Richard.
Replaced with revised version of paper 06/29/07.
Tipo: Conference Paper or Presentation
Palavras-chave: Livestock Production/Industries; Productivity Analysis.
Ano: 2007
URL: http://purl.umn.edu/9763

INTERNATIONAL R&amp;D SPILLOVERS AND PRODUCTIVITY GROWTH IN THE  AGRICULTURAL SECTOR. A PANEL COINTEGRATION APPROACH
Provedor de dados: 31
Autores: Gutierrez,   Michele Mario; Gutierrez,   Luciano.
This paper analyses, within the new growth theory framework and using panel cointegration techniques, the effect of agricultural international technological spillovers on total factor productivity growth for a sample of 47 countries during the period 1970-1992. The analysis shows that total factor productivity is influenced by domestic as well as foreign public R&amp;D spending in agricultural sector and geographical factors matters. Countries located in temperate zones benefit more than countries located in tropical zones from technological spillovers. Finally, the analysis shows that the rate of return to agricultural R&amp;D spending is higher in tropical countries and this could justify new support and an even greater investment of funds for...
Tipo: Conference Paper or Presentation
Palavras-chave: Research and Development/Tech Change/Emerging Technologies.
Ano: 2003
URL: http://purl.umn.edu/25884

MODELING THE EFFECT OF UNCERTAINTY ON TIMBER HARVEST: A SUGGESTED APPROACH AND EMPIRICAL EXAMPLE
Provedor de dados: 31
Autores: van Kooten,   G. Cornelis; van Kooten,   R.E.; Brown,   G.L.
A method is suggested for modeling uncertainty when there is a lack of information concerning the effect of forest management decisions on tree growth. Dynamic programming is used to investigate the optimality of alternative management strategies. The model is illustrated with an empirical example for a boreal forest region of western Canada. Three tentative conclusions follow: (a) silvicultural strategies to reduce uncertainty or to increase stand growth may not be worth pursuing, at least in northern forests; (b) the discounted cost of ignoring uncertainty may be substantial if taken over the entire forest; and (c) given uncertain forest growth, flexible harvest policies are preferred to a fixed harvest age.
Tipo: Journal Article
Palavras-chave: Agricultural Finance; Resource /Energy Economics and Policy; Risk and Uncertainty.
Ano: 1992
URL: http://purl.umn.edu/30740

Technology and Human Development
Provedor de dados: 31
Autores: Ranis,   Gustav.
Human development, in combination with technology, yields economic growth which, in turn, is necessary to generate further advances in human development.  This paper focuses on the first channel above and finds the relationship significant.  Secondly, the paper tries to investigate what affects technology change, as represented by TFP.  We examine the influence of openness, FDI, patents and R&amp;D in a 22 country sample and also contrast Asian and Latin American experience.
Tipo: Working Paper
Palavras-chave: Technology; Human Development; International Development; F00; F16; J24; O10; O15; O30; O31; O32.
Ano: 2011
URL: http://purl.umn.edu/118649

An Analysis of the Evolution of Tourism Destinations from the Point of View of the Economic Growth Theory
Provedor de dados: 31
Autores: Lozano,   Javier; Gomez Gomez,   Carlos Mario; Rey-Maquieira,   Javier.
In this paper we try to build a bridge between the traditional analysis of the evolution of tourism destinations and economic growth theory. With such an aim we develop an environmental growth model for an economy specialized in tourism and we derive the pattern of tourism development with numerical calculations. The results of our simulations do not contradict the general pattern of evolution implied in the Tourism Area Life Cycle Hypothesis, being environmental deterioration and public goods congestion the main reasons for the stagnation of the tourism destination. We also show the importance of the quality of private tourism services in the evolution of the tourism destination.
Tipo: Working or Discussion Paper
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2005
URL: http://purl.umn.edu/12151

DOES INDUSTRIAL CONCENTRATION RAISE PRODUCTIVITY IN FOOD INDUSTRIES?
Provedor de dados: 31
Autores: Gopinath,   Munisamy; Pick,   Daniel H.; Li,   Yonghai.
This manuscript investigates the productivity-industrial concentration relationship in U.S. food industries. We identify a critical level of industrial concentration beyond which its relationship with productivity growth becomes negative.  The welfare effects of an increase in concentration - productivity growth and deadweight loss- are computed.  Welfare loss from increasing concentration is substantially offset by gains from productivity growth.
Tipo: Conference Paper or Presentation
Palavras-chave: Industrial Organization; Productivity Analysis.
Ano: 2002
URL: http://purl.umn.edu/36634

On the resurgent population and food debate
Provedor de dados: 31
Autores: Johnson,   D. Gale.
Since Malthus wrote his famous Essay on Population, the world has witnessed great improvements in numerous measures of well-being Ð life expectancy, infant mortality, incidence of famines and plagues, per capita food consumption as well as real per capita incomes. These improvements have come about during rapid population growth in both industrial and developing countries. Food demand and supply projections suggest that growth of supply will fully meet growth of consumption while grain prices continue to decline. While China may increase grain imports early next century, Central and Eastern Europe is likely to emerge as a major grain exporter and thus help to meet the increase in China's imports.
Tipo: Journal Article
Palavras-chave: Food Security and Poverty.
Ano: 1997
URL: http://purl.umn.edu/118005

Co-integration Analysis on the Relationship between Methane Energy Development and Economic Growth in the City of Huixian
Provedor de dados: 31
Autores: Liu,   Xiao-ling; Zheng,   Xun-gang.
Based on the statistical data of Huixian from 1992 to 2010, we analyze the long-term and short-term relationship between Huixian's methane energy development and GDP by using co-integration test and error correction model. The empirical results show that there is a long-term equilibrium relationship between methane energy and GDP in me city of Huixlan, and which is the one-way Granger causality of methane and GDP. In conclusion, the paper puts forward some steps about spurring economic growth, methane development and utilization in Huixian.
Tipo: Article
Palavras-chave: Methane energy; Economic growth; Co-integration analysis; China; Agribusiness.
Ano: 2011
URL: http://purl.umn.edu/119694

Agricultural Productivity Growth in Africa: Is Efficiency Catching-up or Lagging Behind?
Provedor de dados: 31
Autores: Mugera,   Amin W.; Ojede,   Andrew.
Recent empirical studies on agricultural productivity growth in African countries have produced mixed results; some find that uptake of new technology (technical progress) is the main source of total factor productivity growth while others point to improved use of existing technology (efficiency catch-up). This study tests for efficiency catch-up in the agricultural productivity of 33 African countries from 1966 to 2001. We use recent advances in data envelopment analysis (DEA) to generate standard and bootstrap bias corrected technical efficiency scores. In general, we find no evidence of efficiency catching-up. The standard DEA overestimated the efficiency scores of some countries due to small sample bias.
Tipo: Conference Paper or Presentation
Palavras-chave: Agriculture; Efficiency Catch-up; Bootstrap DEA; Africa; International Development; Production Economics.
Ano: 2011
URL: http://purl.umn.edu/100687

Estimating Effects of an Urban Growth Boundary on Land Development
Provedor de dados: 31
Autores: Cho,   Seong-Hoon; Chen,   Zhuo; Yen,   Steven T.; Eastwood,   David B.
This study estimates the effects of an urban growth boundary (UGB) on land development decisions in Knox County, TN, using a heteroscedastic probit model.  With combined efforts of increased land development within the city boundary and decreased development within the UGB and the neighboring town of Farragut after the implementation of UGB, the UGB of Knox County has been successful in urban revitalization within the city boundary and discouraging urban sprawl.  These UGB impacts may be related to the city government having the right to annex land parcels within the UGB without consent of land owners.
Tipo: Journal Article
Palavras-chave: Heteroscedastic probit; Land development; Urban growth boundary; Community/Rural/Urban Development; Environmental Economics and Policy; Land Economics/Use; C35; Q24; R52.
Ano: 2006
URL: http://purl.umn.edu/43761

Abatement Technology and the Environment-Growth Nexus with Education
Provedor de dados: 31
Autores: Pautrel,   Xavier.
This article challenges the conventional result that a tighter environmental tax has no long-run effect on human capital accumulation in the presence of pollution arising from final output production. It demonstrates that the technology used in the abatement sector determines the existence and the direction of the growth-effect. A tighter environmental tax rises (respectively reduces) human capital accumulation in the presence of pollution arising from final production, if the abatement sector is relatively more intensive in human (resp. physical) capital than final sector. That result always holds for finite lifetime but for infinite lifetime it only holds when labor supply is endogenous. The transitional impact of a tighter environmental policy is also...
Tipo: Working or Discussion Paper
Palavras-chave: Growth; Environment; Overlapping Generations; Human Capital; Abatement; Research and Development/Tech Change/Emerging Technologies; Q5; Q58.
Ano: 2011
URL: http://purl.umn.edu/101379

Technical innovation and farm productivity growth in dryland Africa: The effects of structural adjustment on smallholders in Kenya
Provedor de dados: 31
Autores: Nyariki,   D.M.; Thirtle,   Colin G.
This paper uses non-parametric approach to measure technical innovation and productivity growth at the smallholder farm-level in dry-land sub-Saharan Africa during the initial years of the structural adjustment programmes for agriculture. Data from Kenya for two production years, 1991/2 and 1995/6 are used to construct a Malmquist productivity index. The results show that the rise in input prices led to reduced use of modern inputs, so that efficiency increased at 12% per year. However, lower use of modern varieties and less fertiliser also gave technological regression at 2.5% per annum, so that the overall outcome was productivity growth of 3% per annum. However, productivity improvement cannot be sustainable without technological progress.
Tipo: Journal Article
Palavras-chave: Farm Management; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2000
URL: http://purl.umn.edu/54220

THE DEMAND FOR FOOD IN EGYPT:  PROBLEMS AND PROSPECTS
Provedor de dados: 31
Autores: Elnaggar,   Salah Y.
In recent years, Egypt has had a very precarious food situation because of limited cultivated area.  Effective demand for food is outrunning the available supply.  A high population growth rate together with rapid social change and mass movement of labor contribute to the severe food shortages.  As the income per capita increases, and the other factors of production continue to shift from rural to urban areas, prices for food are increasing causing obstacles for the economic growth.  This study has focused on the problem of the demand for food, and the economic relationship between the demand for food on the one hand and population growth and per capita income on the other.  Also discussed is the possibility of increasing the supply of food to meet the...
Tipo: Thesis or Dissertation
Palavras-chave: Demand and Price Analysis; Food Consumption/Nutrition/Food Safety.
Ano: 1974
URL: http://purl.umn.edu/11077

Use of mannanoligosaccharides in broiler feeding
Provedor de dados: 89
Autores: Flemming,JS; Freitas,JRS; Fontoura,P; Montanhini Neto,R; Arruda,JS.
A study with 2,400 broilers was carried out to compare the effect of the use of mannanoligosaccharides, Saccharomyces cerevisiae cell wall or growth promoter (Olaquindox) in the diet on broiler. Diets were based on corn and soybean meal. A completely randomized experimental design was used, and the obtained data were evaluated by analysis of variance and test of Tukey at a level of 5%. The following parameters were measured: feed intake, daily weight gain, feed conversion ratio, and mortality. It was concluded that the effect of the inclusion of mannanoligosaccharides in the diet on the studied parameters was significantly higher as compared to the inclusion of cell wall or to the control diet, but the effect was not different as compared to the inclusion...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler diets; Alternative growth promoters; Additives in broiler diets.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000300005

Dinâmica populacional da matrinxã Brycon amazonicus (Characidae) na Amazônia Central
Provedor de dados: 103
Autores: Santos Filho,Leocy C. dos; Batista,Vandick da S.
The matrinxã, Brycon amazonicus (Spix &amp;amp; Agassiz, 1829) is one of the most important fishery resources of the Amazonas state. Its population dynamics in Central Amazon was analyzed based on total landing and biometry data registered in the main landing port of Manaus, between 1994 and 2002. Growth and mortality rates were estimated separately for the rivers Purus, Madeira and Solimões. Differences in size structure and growth curves suggest that different population units exist among these rivers, requiring individualized evaluation and fisheries management strategies. The analysis of the yield per recruit does not indicate overexploitation. However, the highest relative exploitation rate was observed in the Madeira river. The suggested management...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fisheries; Growth; Mortality; Stock.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000200001

Growth and endoglucanase activity of Acetivibrio cellulolyticus grown in three different cellulosic substrates
Provedor de dados: 59
Autores: Sanchez,Cássia Regina; Peres,Clarita Schvartz; Barbosa,Heloiza Ramos.
The growth kinetics of Acetivibrio cellulolyticus grown in medium containing different carbon sources (cellobiose, amorphous or crystalline cellulose) was investigated. The specific growth rate was higher in cellobiose fed cultures than in the presence of the other two substrates. Endoglucanase production was greater in cultures grown on amorphous cellulose; enzyme activity increased during the stationary phase in cultures grown on crystalline cellulose.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acetivibrio cellulolyticus; Endoglucanase activity; Cellulose.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141999000400004

Mixed-effects growth curves in the valuation of Nellore sires
Provedor de dados: 63
Autores: Giolo,Suely Ruiz; Henderson,Robin; Demétrio,Clarice Garcia Borges.
Cattle breeding programmes need objective criteria in order to evaluate and subsequently improve production systems. This work uses a logistic growth curve model for evaluating sires based on their progeny weight measured repeatedly over time. The parameters of the curve are described as a linear function of fixed and random effects. A Bayesian approach is used for the estimation. Analysis of the weights recorded on animals of the Nellore breed shows that growth curve models with fixed and random effects can be useful to evaluate and selecting sires.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beef cattle; Logistic model; Longitudinal data; Random effects.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000100012

Inflection and stability points of diphasic logistic analysis of growth
Provedor de dados: 63
Autores: Mischan,Martha Maria; Passos,José Raimundo de Souza; Pinho,Sheila Zambello de; Carvalho,Lídia Raquel de.
Growth functions with inflection points following a diphasic model, can be adjusted by two approaches using segmented regression or the sum of two functions. In both cases, there are two functions, one for each phase, with inflection and stability points. However, when they are summed, the result is a new function and the points of inflection and stability are different from those obtained from using each function individually. A method to determine these points in a diphasic logistics sum of functions is suggested and the results obtained from fitting the models to eucalyptus growth data showed a better fit of the logistic diphasic sum as compared with segmented regression and monophasic logistic models.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nonlinear models; Segmented regression; Sum of logistics.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000300215

Alteraçoes morfológicas dos estádios de crescimento de Amphilocus neapolitanus Della Valle (Gammaridea, Amphilochidae) e Ampithoe ramondi Audouin (Gammaridea, Ampithoidae), anfípodes associados à alga Sargassum cymosum
Provedor de dados: 104
Autores: Leite,Fosca P.P.
A descriptive account is given of the post-embrionic development of Amphilochus neapolitanus Della Valle, 1893 and Ampilhoe ramondi Audouin, 1826 living on Sargassum cymosum C. Agardh, 1820 of Ubatuba, Brazil (23º30'S-45º06'W) through the growth stage based on the morphological changes at each moult. The growth stages are described on the increase of antennal and pleopodal articles number and morphological alterations of gnathopods. The number of stages was found to be different for males and females and the maturity occurs after 6 and 5 post marsupial stages for A. neapolitanus and A. ramondi respectively.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amphipods gammarids; Growth stages; Morphological variations.
Ano: 1996
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000100004

Dinâmica da reprodução e crescimento de Hoplias malabaricus (Bloch, 1794) (Osteichthyes, Erythrinidae) da Represa do Monjolinho, São Carlos/SP
Provedor de dados: 104
Autores: Barbieri,Geraldo.
Studies on reproduction dynamics and growth of Hoplias malabaricus were carried out in Monjolinho Reservoir (São Carlos/SP) and the following conclusions were reached to: the reproductive period occurs in September and October. The mean values of replection and gonadosomatic index and condition factor increased during the reproductive period. The size of the first sexual maturation of females was observed at 16,7 cm. The fecundity, that is relatively low, was related with total length and weight of females. The growth curve suggests a slow growth of this species.
Tipo: Info:eu-repo/semantics/article
Ano: 1989
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751989000200006

Three years on demography of a group of Alouatta guariba clamitans Cabrera (Primates, Atelidae): growth and fragmentation
Provedor de dados: 104
Autores: Miranda,João M. D.; Bernardi,Itiberê P.; Moro-Rios,Rodrigo F.; Passos,Fernando C.
This study was carried out in the Chácara Payquerê do Bugre, State of Paraná, Southern Brazil (25º29'52" S and 49º39'24" W) and reports on the demography of a group of Alouatta guariba clamitans Cabrera, 1940 followed monthly during three years (from February, 2002 to March, 2005). The growth and subsequent fission of the group are described and argued, as well as their possible underlying causes, focusing on the population ecology and social behavior of this taxa.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brown howlers; Dispersal; Group fission; Group growth; Population ecology.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752006000300013

Crescimento e reprodução de Hyale media Dana (Amphipoda, Gammaridae, Hyalidae) associada à Sargassum cymosum C. Agardh
Provedor de dados: 104
Autores: Leite,Fosca Pedini Pereira.
The post-marsupial growth, sexual differentiation, fecundity and reproductive biology of Hyale media Dana, 1853 living on Sargassum cymosum C. Agardh, 1820 are described. The growth was continuous througth 12 stages for males and 9 for females. The sexual differentiation occours at 2th or 3th moult and was demonstrated by the enlargment of the gnatopod II propod. Number of eggs increased with the female head length. Observations of courtship behavior, incubation, moult processes, emergence of juveniles and brood caracteristics were made. The precopula courtship continued for two days, the eggs were incubated for six days and the juveniles, that stay until three days in the marsupium, moult every day.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amphipods; Reproduction; Growth; Fecundity; Sargassum.
Ano: 1996
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000300008

Growth ring analysis of fossil coniferous woods from early cretaceous of Araripe Basin (Brazil)
Provedor de dados: 42
Autores: Pires,Etiene F.; Guerra-Sommer,Margot.
Growth ring analysis on silicified coniferous woods from the Missão Velha Formation (Araripe Basin - Brazil) has yielded important information about periodicity of wood production during the Early Cretaceous in the equatorial belt. Despite warm temperatures, dendrological data indicate that the climate was characterized by cyclical alternation of dry and rainy periods influenced by cyclical precipitations, typical of tropical wet and dry or savanna climate. The abundance of false growth rings can be attributed to both occasional droughts and arthropod damage. The present climate data agree with palaeoclimatic models that inferred summer-wet biomes for the Late Jurassic/Early Cretaceous boundary in the southern equatorial belt.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Araripe Basin - Brazil; Dendroclimatology; Pre-rift phase; Fossil woods.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000200005

Action of growth regulators on soybean cultivar Davis
Provedor de dados: 43
Autores: Castro,Paulo R.C.; Vello,Natal A.
The effects of growth regularots on soybean plant (Glycine max) under greenhouse conditions were studied. Before flower ing, Agrostemmin (1 g/10 ml/3 1), gibberellic acid (GA) 100 ppm, and (2-chloroethyl) trimethylammonium chloride (CCC) 2,000 ppm were applied. At the flower anthesis, 2,3,5 - triio dobenzoic acid (TIBA) 20 ppm was applied. Other two applications with TIBA, with intervals of four days, were realized. Treatment with GA increased plant height while CCC presented a tendency to reduce it. Numbers of leaves, internods, and stems were not affected by the growth regulators.
Tipo: Info:eu-repo/semantics/article
Ano: 1981
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0071-12761981000100021

Attack of Potyphagotarsonemus tatus on cotton treated with growth retardants
Provedor de dados: 43
Autores: Barbosa,Luiz Mauro; Castro,Paulo R.C.
The effects of growth retardants on infestation by Potyphagotarsonemus tatus (broad mite) on cotton (Gossypium hirsutum L. cv. IAC-17) plants was studied. Cotton plants were sprayed with (2-ch1oroethy1) trimethylammonium chloride (CCC) 250, 350 and 450 ppm, and with 1,1-dimethyl-piperidinium chloride (Pix) at concentrations of 84, 167 and 250 ppm. Growth retardants did not give effective control of Potyphagotarsone mus tatus but application of Pix 167 ppm showed a tendency to reduce mite attack.
Tipo: Info:eu-repo/semantics/article
Ano: 1981
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0071-12761981000100011

Effects of growth regulators on productivity of soybean (Glycine max cv. Davis) under competition
Provedor de dados: 43
Autores: Castro,Paulo R.C.
The effects of growth substances on productivity of 'Davis' soybean maintained under competition was investigated. Before the flowering, Agrostemmin (1 g/10 ml/3 1), gibberellic acid (GA) 100 ppm, and (2-chloroethyl) trimethylammonium chloride (CCC) 2,000 ppm were applied. At the flower anthesis, 2,3,5-triiodobenzoic acid (TIBA) 20 ppm was applied. Other two applications with TIBA, with intervals of four days, were realized. The growth regulators did not affect the productivity of 'Davis' soybean maintened under competition. The competition among plants did not affect the stem dry weight and number of pods, and seeds. The competition reduced weight of pods without seeds, seed weight, and weight of 100 seeds.
Tipo: Info:eu-repo/semantics/article
Ano: 1981
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0071-12761981000100023

Análise Bayesiana da curva de crescimento de cordeiros da raça Santa Inês
Provedor de dados: 45
Autores: Guedes,M.H.P.; Muniz,J.A.; Silva,F.F.; Aquino,L.H.
The logistic growth function was fitted to Santa Inês lamb through the Bayesian methodology. The absolute growth rates were taken in each time interval. The methodology was efficient, generating expressive values for parameters estimates and allowed the interval estimation for absolute growth rates.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cordeiro; Santa Inês; Análise Bayesiana; Curva de crescimento.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352005000300024

PRESENCIA DE TUBOS CALCÁREOS BIOGÉNICOS EN LA ESTRUCTURA DEL CORAL MADRACIS MYRIASTER (SCLERACTINIA: POCILLOPORIDAE) DE AGUAS PROFUNDAS EN EL CARIBE COLOMBIANO
Provedor de dados: 50
Autores: López,Tomás; Santodomingo,Nadiezdha; Reyes,Javier.
A large number of branches from the scleractinian coral Madracis myriaster, collected in deep waters of the Colombian Caribbean, showed both inside and around the skeleton calcareous structures constructed by tubiculous organisms. Here, based on the growth strategy of the coral and the physical conditions of deep-water areas, we describe the functional effect of the tube structures on deep coral frameworks formation and growth.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Calcareous Tubes; Colombian Caribbean; Deep-Water; Growth Strategy.
Ano: 2008
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612008000200013

Esverdeamento e brotação em cultivares alemães e holandeses de batata
Provedor de dados: 53
Autores: Castro,Jairo Lopes de; Miranda Filho,Hilário da Silva; JorgeII,Joassy de Paula Neves.
Nineteen German and five Dutch potato varieties were observed in relation to greening and sprout growth development in the tubers. The Dutch varieties Jaerla and Bintje and the German varieties Atica, Emergo and Topi were less susceptible to greening, but all the others in the second reading, 10 days after light exposition, showed the skin green or very green. Jetta, Broca, Wiebke, Palma, Lux, Rubin and Salvia, 5 days after light exposition also showed similar results. The varieties that showed early sprout growth were Omega, Jaerla and Bintje, being the latter slower in relation to development. Geelbling, Salvia and Spunta are late sprout growth varieties.
Ano: 1982
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051982000100022

Influence of light intensity on growth and physiological characteristics of common sage (Salvia officinalis L.)
Provedor de dados: 52
Autores: Zervoudakis,George; Salahas,George; Kaspiris,George; Konstantopoulou,Eleni.
The aim of this work was to investigate the effects of four different light intensities on the growth characteristics, physiological parameters and leaf photosynthetic pigments of Salvia officinalis L. The plant's dry mass, number of the leaves and physiological parameters indicated a strong positive correlation with the light intensity. On the other hand, the plant's height and leaf photosynthetic pigments were increased at low light treated plants. These results suggest that the aromatic herb Salvia officinalis L. is adaptable to different light environments.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth; Photosynthetic pigments; Physiological parameters; Salvia officinalis; Solar radiation.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000100011

Epibiosis Reduction on Productivity in a Mussel Culture of Perna perna (Linné, 1758)
Provedor de dados: 52
Autores: Metri,Rafael; Rocha,Rosana Moreira da; Marenzi,Adriano.
Cultivated mussels (Perna perna) were studied to test for the effects of cleaning on their growth. These effects were examined by experimentally cleaning mussels and by changing mussel density. Treatment was performed twice, at two and four months after immerging the ropes. Two months after the first treatment and three months after the second treatment, mussels were harvested and measured (weight, length, width and thickness). Analysis of variance showed that none of the treatments resulted in increased growth of the mussels, nor did increased density result in decreased growth when compared with the control. It was concluded that it was not necessary to clean the shells to increase harvest.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mussels culture; Perna perna; Epibiosis; Cleaning management.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000300011

Micropropagation of Salvia guaranitica Benth. through axillary shoot proliferation
Provedor de dados: 52
Autores: Echeverrigaray,Sergio; Carrer,Rosane Postingher; Andrade,Luciana Bavaresco.
Nodal segments from greenhouse grown adult plants of Salvia guaranitica were used to evaluate the effect of culture media and growth regulators on the micropropagation and growth. The highest multiplication rate was obtained on Murashige and Skoog (MS) medium supplemented with 2.22 µM of 6-benzylaminopurine (BAP). The best condition for rooting was MS medium with 2.85 µM indole-3-acetic acid (IAA). Rooted plants were successfully acclimatized and exhibited a normal development until maturity. Using the described protocol, approximately 35 plants per explant were obtained after three months.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth regulators; Shoot culture; Axillary buds.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000400018

Correlation between the length and weight of Arius maculatus off the southwestern coast of Taiwan
Provedor de dados: 52
Autores: Chu,Wu-Shan; Hou,Yi-You; Ueng,Yih-Tsong; Wang,Jiang-Ping.
In this study, Arius maculatus were collected using the samples caught by bottom trawling off the southwestern coast of Taiwan. Length-weight and length-length, fork (FL), standard (SL) and total (TL) lengths, relationships were determined. The relationships between the lengths were all significantly linear (p&lt;0.01), the b value in the length-weight relationship for this value was significantly lower than 3 in the fall (p&lt;0.01), when the temporal changes were taken into account, indicating that only the sampling time affected the growth pattern of A. maculatus. The growth was isometric in the spring, summer and winter, but it was negative and allometric in the fall.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arius maculatus; Length-Weight Relationship; Growth; Stand Length (SL).
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000500009

Temporal expression pattern of the insulin-like growth factor II and fibroblast growth factor transcripts in avian embryogenesis
Provedor de dados: 52
Autores: Gabriel,Jane Eyre; Alvares,Lúcia Elvira; Coutinho,Luiz Lehmann.
In this study, the abundance of IGF-II and bFGF transcripts was estimated in the chicken embryos using the competitive RT-PCR analysis. Significant enhancements in the abundance of IGF-II mRNA were observed at stages HH1 and 5, and a new accumulation in these levels was observed at stage HH18 in comparison to the basal levels. The abundance of bFGF mRNA increased significantly at stages HH18 and 20, followed by an upregulation in the expression of these transcripts at stage HH26. These findings provided important information about the temporal expression pattern of IGF-II and bFGF transcripts in the whole chicken embryos during in ovo development.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken embryos; Temporal expression; Competitive RT-PCR; Growth factors.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000500011

The toxicity of jack bean [Canavalia ensiformis (L.) DC.] canatoxin to plant pathogenic fungi
Provedor de dados: 57
Autores: OLIVEIRA,A. E. A.; GOMES,V. M.; SALES,M. P.; FERNANDES,K. V. S.; CARLINI,C. R.; XAVIER-FILHO,J.
Protein fractions obtained from seeds of the jack bean (Canavalia ensiformis) as well as the amino acid canavanine, present in these seeds, were tested for their capacity to inhibit the growth of the phytopathogenic fungi Macrophomina phaseolina, Colletotrichum gloesporioides, Sclerotium rolfsii and Fusarium oxysporum. We found that most of the proteins examined and also canavanine did not have any effect on the growth of these fungi. On the other hand the toxic protein canatoxin was found to be effective, at a concentration of 2%, in the inhibition of the growth of M. phaseolina, C. gloesporioides and S. rolfsii.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canavalia ensiformis; Jack bean seeds; Canatoxin; Phytopathogenic fungi.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081999000100008

Integrins in vascular development
Provedor de dados: 56
Autores: Hynes,R.O.; Bader,B.L.; Hodivala-Dilke,K.
Many growth factors and their protein kinase receptors play a role in regulating vascular development. In addition, cell adhesion molecules, such as integrins and their ligands in the extracellular matrix, play important roles in the adhesion, migration, proliferation, survival and differentiation of the cells that form the vasculature. Some integrins are known to be regulated by angiogenic growth factors and studies with inhibitors of integrin functions and using strains of mice lacking specific integrins clearly implicate some of these molecules in vasculogenesis and angiogenesis. However, the data are incomplete and sometimes discordant and it is unclear how angiogenic growth factors and integrin-mediated adhesive events cooperate in the diverse cell...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vasculogenesis; Angiogenesis; Integrins; Knockout mice.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999000500002

The effect of organic osmoprotectors on Aeromonas trota and A. hydrophila grown under high sodium chloride concentrations
Provedor de dados: 58
Autores: Delamare,Ana Paula L.; Dalcin,Thais; Müller,Gabriela; Costa,Sergio Olavo Pinto da; Echeverrigaray,Sergio.
The effect of organic solutes on the growth of Aeromonas trota and A. hydrophila was evaluated. Proline and glutamic acid were not effective as osmoprotectors, but betaine exerts osmoprotection allowing the growth of both strains in inhibitory concentrations of NaCl. Growth kinetics suggests that the halotolerance difference between the strains is associated with the synthesis of osmolytes rather than betaine uptake.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Halotolerance; Betaine; Aeromonas.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000500044

Pseudomonas aeruginosa KUCd1, a possible candidate for cadmium bioremediation
Provedor de dados: 58
Autores: Sinha,Sangram; Mukherjee,Samir Kumar.
A cadmium (8 mM) resistant Pseudomonas aeruginosa strain KUCd1 exhibiting high Cd accumulation under in vitro aerobic condition has been reported. The isolate showed a significant ability to remove more than 75% and 89% of the soluble cadmium during the active growth phase from the growth medium and from Cd-amended industrial wastewater under growth supportive condition. Transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDXS) suggest the presence of Cd in the cells from mid-stationary phase. The cell fractionation study revealed membrane and periplasm to be the major accumulating site in this strain. The chemical nature of the accumulated Cd was studied by X-ray powder diffraction analysis.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pseudomonas aeruginosa; Cadmium; Bioremediation.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000300030

Antagonism of Serratia marcescens towards Phytophthora parasitica and its effects in promoting the growth of citrus
Provedor de dados: 58
Autores: Queiroz,Brigida Pimentel Villar de; Melo,Itamar Soares de.
Phytophthora parasitica causes serious widespread, and difficult-to-control root rots in warmer regions. This oomycete is one of the most important pathogen of citrus. This paper reports the biological control of the pathogen by a strain of Serratia marcescens R-35, isolated from citrus rhizosphere. In greenhouse trials, the bacterium suppressed more than 50% of the disease and promoted the plant growth.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological control; Rhizobacteria; Plant growth promotion.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000400008

Comparison of plant growth-promotion with Pseudomonas aeruginosa and Bacillus subtilis in three vegetables
Provedor de dados: 58
Autores: Adesemoye,A.O.; Obini,M.; Ugoji,E.O.
Our objective was to compare some plant growth promoting rhizobacteria (PGPR) properties of Bacillus subtilis and Pseudomonas aeruginosa as representatives of their two genera. Solanum lycopersicum L. (tomato), Abelmoschus esculentus (okra), and Amaranthus sp. (African spinach) were inoculated with the bacterial cultures. At 60 days after planting, dry biomass for plants treated with B. subtilis and P. aeruginosa increased 31% for tomato, 36% and 29% for okra, and 83% and 40% for African spinach respectively over the non-bacterized control. Considering all the parameters tested, there were similarities but no significant difference at P &lt; 0.05 between the overall performances of the two organisms.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: PGPR; Pseudomonas aeruginosa; Bacillus subtilis; Growth promotion.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000300003

Succession and growth strategy of a spring microbial community from kezhou sinter in China
Provedor de dados: 58
Autores: Yang,Hongmei; Lou,Kai.
The succession and growth strategy of a spring microbial community under earthquake action were investigated. The majority of pre-earthquake isolates belonged to the Gammaproteobacteria, including two numerically dominant Stenotrophomonas sp. RB25 and Acinetobacter sp. RB11 (r-strategists). The predominant post-earthquake isolates were Alphaproteobacteria, with Rhizobium sp. RA42 (K-strategists) being dominant among these organisms.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth strategy; Succession; Spring microbe; Earthquake.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000100005

EFFECTS OF IMMOBILIZATION IN Ba-ALGINATE ON NITRILE-DEPENDENT OXYGEN UPTAKE RATES OF CANDIDA GUILLIERMONDII
Provedor de dados: 58
Autores: Dias,João Carlos Teixeira; Rezende,Rachel Passos; Linardi,Valter Roberto.
Yeast cells immobilized by entrapment in Ba-alginate gel were investigated for growth pattern and respiratory activity. The oxygen uptake rates (OUR) of cells entrapped in gels with 4% alginate were 5.2 and 23% lower than the OUR of 2% alginate and free cells, respectively. The mass-transfer resistance offered by the matrix and growth of the entrapped cells determine a gradient of nutrients throughout the gel which is responsible for both a lower specific growth rate of immobilized cells with respect to that of free ones, and a heterogeneous biomass distribution, with progressively increasing cellular density from the inside to the outside of the matrix. Gel-matrix polymer concentration affected the maximum oxygen uptake of immobilized growing yeast cells.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nitriles; Candida guilliermondii; Ba-alginate; Respiration.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000300011

Reproduction and survival of Muscina stabulans under laboratory conditions
Provedor de dados: 65
Autores: Krüger,Rodrigo Ferreira; Ribeiro,Paulo Bretanha; Erthal,Simone Giehl; DeSouza,Og.
This is the first published report concerning reproduction and survival using life table analyses of fertility and survival for Muscina stabulans maintained under laboratory conditions with artificial diets. The intrinsic rate of growth, reproduction rate and average generational time were obtained, suggesting a rapid population growth under these rearing conditions. These findings permitted the creation of time models of survival and oviposition, as well as a quantitative estimate of the adaptation capacity of this species.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Life table; Survival analysis; Population growth.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000300030

Influence of radiation level on plant growth, yield and quality of essential oil in carqueja
Provedor de dados: 64
Autores: Silva,Fabiano Guimarães; Pinto,José Eduardo Brasil Pereira; Cardoso,Maria das Graças; Nascimento,Evandro A.; Nelson,David Lee; Sales,Juliana de Fátima; Mol,Daniel José de S.
In this research it was studied the influence of the radiation intensity on growth and on the essential oil yield of Baccharis trimera. The plants growth was studied under four levels of radiation: 100, 60, 50 and 20% during a 259-day long period. Plants were then evaluated for height, number of nodes, branches, stem diameter (at the height of the colon), biomass formation, and content and composition of the oil. The highest level of radiation caused increases in all of the variables evaluated, except for height, which was reduced with increasing radiation. Essential oil content also increased with increasing level of radiation.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Baccharis trimera; Asteraceae; Medicinal plant.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542006000100007

RATES OF APPLICATION OF Azospirillum brasilense IN TOMATO CROP
Provedor de dados: 196
Autores: de Lima, Neberson de Souza Antunes; Vogel, Gabriel Felipe; Fey, Rubens.
The use of plant growth-promoting bacteria (PGPB) may be a promising agronomic practice to improve the growth and productivity of vegetables. The objective of this work was to evaluate the effect of inoculation of Azospirillum brasilense on plant growth and tomato fruit production. Two experiments were carried out: the first one evaluating the growth of the plants in a greenhouse and the second one evaluating the production of fruits under field conditions. The experimental design used in two experiments was the completely randomized 2 x 5 factorial scheme, with four replications. The treatments resulted from the combination of two tomato cultivars (Gaúcho Melhorado and San Marzano) and four inoculant doses (0; 2; 4; 6 e 8 mL kg-1 of seed) containing the...
Tipo: Info:eu-repo/semantics/article
Ano: 2018
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/3142

EFFECT OF SELENIUM ON GROWTH AND PHYSIOLOGICAL TRAITS OF BASIL PLANT (Ocimum basilicum L.) UNDER ARSENIC STRESS CONDITIONS
Provedor de dados: 196
Autores: Rostami, Mahdi; Abbaspour, Hossein.
Arsenic is one of the common toxins in the environment that enters the environment through natural and artificial sources and causes stress in plants through various ways, including the effect on growth and metabolism of the plant. Further, the absorbance of this element in plants and the entry into the food chain create toxicity for humans. On the other hand, Selenium is a non-biological stress reliever and has a considerable impact on improved plant growth and photosynthesis and reduced stress. Due to the interaction of Arsenic and Selenium in soil and different plants and the importance of Basil plant, an experiment was performed to investigate the effect of Selenium on growth and some physiological traits of Basil plant (Ocimum basilicum L.) under...
Tipo: Info:eu-repo/semantics/article
Ano: 2019
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/3324

La deuda pública y el PIB, de las entidades federativas de México.
Provedor de dados: 32
Autores: Domínguez Olán, Said Esteban.
Treinta y un Entidades Federativas de México se encuentran endeudadas con empréstitos de carácter público, en un rango que va desde 404.8 millones de pesos el más bajo, (Campeche), hasta 52,162.4 millones de pesos el más alto (Distrito Federal); el objetivo de este estudio fue evaluar la influencia de la deuda pública de los Estados y el Distrito Federal de México, sobre los indicadores macroeconómicos, consumo privado, formación bruta de capital (Activos Fijos) y el Producto Interno Bruto de las mismas entidades. Con un modelo de datos panel se obtiene que la tasa de crecimiento del PIB y de las otras variables de estudio por entidad federativa, es afectada negativamente por el aumento de deuda pública de la entidad, pero no de manera significativa...
Palavras-chave: Consumo privado; Formación bruta de capital; Producto interno bruto; Modelos de datos panel; Indicadores macroeconómicos; Crecimiento; Private consumption; Gross capital formation; GDP; Public debt; Panel data models; Macroeconomic indicators; Growth; Economía; Maestría; Empréstitos de carácter público.
Ano: 2013
URL: http://hdl.handle.net/10521/2118

Past, Present, and Future Old Growth in Frequent-fire Conifer Forests of the Western United States
Provedor de dados: 7
Autores: Abella, Scott R.; Public Lands Institute and School of Life Sciences, University of Nevada-Las Vegas; Scott.Abella@unlv.edu; Covington, W. Wallace; Ecological Restoration Institute; Northern Arizona University School of Forestry; wally.covington@nau.edu; Lentile, Leigh B.; Department of Forest Resources, University of Idaho; lentile@uidaho.edu; Morgan, Penelope; Department of Forest Resources, University of Idaho; pmorgan@uidaho.edu.
Old growth in the frequent-fire conifer forests of the western United States, such as those containing ponderosa pine (Pinus ponderosa), Jeffrey pine (P. jeffreyi), giant sequoia (Sequioa giganteum) and other species, has undergone major changes since Euro-American settlement. Understanding past changes and anticipating future changes under different potential management scenarios are fundamental to developing ecologically based fuel reduction or ecological restoration treatments. Some of the many changes that have occurred in these forests include shifts from historically frequent surface fire to no fire or to stand-replacing fire regimes, increases in tree density, increased abundance of fire-intolerant trees, decreases in understory productivity,...
Tipo: Peer-Reviewed article
Palavras-chave: Ecological restoration; Evolutionary environment; Mixed conifer; Management; Pinus jeffreyi; Pinus ponderosa; Range of variability; Sequoia giganteum.
Ano: 2007

Indole acetic acid and ACC deaminase from endophytic bacteria improves the growth of Solarium lycopersicum
Provedor de dados: 69
Autores: Latif Khan,Abdul; Ahmed Halo,Boshra; Elyassi,Ali; Ali,Sajid; Al-Hosni,Khadija; Hussain,Javid; Al-Harrasi,Ahmed; Lee,In-Jung.
Background: Endophytic bacteria are ubiquitous in all plant species contributing in host plant's nutrient uptake and helping the host to improve its growth. Moringa peregrina which is a medicinal plant, growing in arid region of Arabia, was assessed for the presence of endophytic bacterial strains. Results: PCR amplification and sequencing of 16S rRNA of bacterial endophytes revealed the 5 endophytic bacteria, in which 2 strains were from Sphingomonas sp.; 2 strains from Bacillus sp. and 1 from Methylobacterium genus. Among the endophytic bacterial strains, a strain of Bacillus subtilis LK14 has shown significant prospects in phosphate solubilization (clearing zone of 56.71 mm after 5 d), ACC deaminase (448.3 ± 2.91 nM &amp;#945;-ketobutyrate mg-1 h-1) and...
Tipo: Journal article
Palavras-chave: ACC deaminase; Bacillus subtilis LK14; Endophytism; Indole 3-acetic acid; Tomato plant growth.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000300007

Fermentation technologies for the production of exopolysaccharide-synthesizing Lactobacillus rhamnosus concentrated cultures
Provedor de dados: 69
Autores: Champagne,Claude P; Gardner,Nancy J; Lacroix,Christophe.
The exopolysaccharide (EPS)-producing cultures such as Lactobacillus rhamnosus RW-9595M present a challenge for the culture producers because the high viscosity of the fermented growth medium makes it difficult to recover the cells by centrifugation or filtration. This study examined four approaches to reduce viscosity of the medium while producing high cell densities: incubation temperature, extended incubation in the stationary growth phase, production in alginate gel beads and fed-batch fermentation technology. Automated spectrophotometry (AS) was used to study the effects of temperature, pH and lactate level on growth of the strain. In AS assays, there was no significant difference in final maximal biomass production at temperatures ranging between...
Tipo: Journal article
Palavras-chave: Alginate beads; Fed-batch culture; Temperature.
Ano: 2007
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582007000200005

Effect of isomalto-oligosaccharide and gentio-oligosaccharide on the growth and fatty acid profile of Lactobacillus plantarum
Provedor de dados: 69
Autores: Soto,Carmen.
Background: Lactobacillus sp. are probiotic microorganisms, and some of them are able to produce conjugated linoleic acid (CLA) via the bio-hydrogenation of linoleic acid (LA). Both CLA and LA are polyunsaturated fatty acids commonly used in the prevention and control of cardiovascular disease, high cholesterol, and cancer, among other ailments. The carbon source is one variable that can affect the growth and characteristics of these bacteria. Molecules called prebiotics are known to benefit human health by stimulating the growth and activity of probiotic bacteria present in the intestinal microflora. The aim of this study was to evaluate how different oligosaccharides affect the growth and fatty acid profile of Lactobacillus plantarum (NRRL - B4496). L....
Tipo: Journal article
Palavras-chave: CLA; Fatty acid profile; Lactobacillus plantarum; Oligosaccharides.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000400008

The effect of three plant bioregulators on pollen germination, pollen tube growth and fruit set in almond [Prunus dulcis (Mill.) D.A. Webb] cvs. Non Pareil and Carmel
Provedor de dados: 69
Autores: Maita,Segundo; Sotomayor,Carlos.
Background In commercial almond [Prunus dulcis (Mill.) D.A. Webb] orchards in Chile, the percentage of fruit set is low and commonly reaches 5–30%. As almond trees bloom during a cool period and also suffer from self-incompatibility, any factor that can improve pollination, pollen germination and pollen tube growth or extend the effective pollination period, such as the application of plant bioregulators (PBRs), should be beneficial for fruit production. Results Three plant bioregulators (PBRs): brassinolide (BL), gibberellic acid (GA3) and kinetin (KN) were evaluated for pollen germination and pollen tube growth in vitro, as well as for fruit set in almond cultivars Non Pareil and Carmel, in central Chile, during the 2013 and 2014 seasons. For pollen...
Tipo: Journal article
Palavras-chave: Fruit set; Plant bioregulators; Pollen germination; Pollen tube growth; Prunus dulcis.
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000500010

YUCCA4 overexpression modulates auxin biosynthesis and transport and influences plant growth and development via crosstalk with abscisic acid in Arabidopsis thaliana
Provedor de dados: 74
Autores: Munguía-Rodríguez,Aarón Giovanni; López-Bucio,Jesús Salvador; Ruiz-Herrera,León Francisco; Ortiz-Castro,Randy; Guevara-García,Ángel Arturo; Marsch-Martínez,Nayelli; Carreón-Abud,Yazmín; López-Bucio,José; Martínez-Trujillo,Miguel.
Abstract Auxin regulates a plethora of events during plant growth and development, acting in concert with other phytohormones. YUCCA genes encode flavin monooxygenases that function in tryptophan-dependent auxin biosynthesis. To understand the contribution of the YUCCA4 (YUC4) gene on auxin homeostasis, plant growth and interaction with abscisic acid (ABA) signaling, 35S::YUC4 seedlings were generated, which showed elongated hypocotyls with hyponastic leaves and changes in root system architecture that correlate with enhanced auxin responsive gene expression. Differential expression of PIN1, 2, 3 and 7 auxin transporters was detected in roots of YUC4 overexpressing seedlings compared to the wild-type: PIN1 was down-regulated whereas PIN2, PIN3 and PIN7...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arabidopsis; Auxin; Abscisic acid; YUCCA4; Root growth; Germination.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572020000100302

Growth of sweet pepper plants submitted to water tensions in soil and potassium silicate doses
Provedor de dados: 75
Autores: Pereira,Alexandre Igor A; Guimarães,João de Jesus; Costa,João Victor; Cantuário,Fernando S de; Salomão,Leandro C; Oliveira,Roberta C de; Luz,José Magno Q.
ABSTRACT Water stress compromises plant growth. Resistance inducers, such as potassium silicate (K2SiO3), can reduce negative effects of this stress on Solanaceae, Capsicum annuum. Plant height, stem diameter and leaf area may indicate the efficiency of potassium silicate foliarsprayagainst water stress. The aim of this study was to evaluate the growth of sweet pepper plants under water stress and K2SiO3 doses. The experiment was conducted in randomized blocks in a split-plot scheme in space. The treatments consisted of four soil water stresses: 15 kPa (field capacity), 25 (intermediate value), 35 and 45 kPa (water stress) and three doses of potassium silicate (0, 0.4 and 0.8 L 100 L-1 water), acting as resistance inducers to water stress. The resistance...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capsicum annuum; Solanaceae; Water stress; Silicon.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000100082

Effect of salicylic acid on pre-transplant acclimatization of native tomato populations
Provedor de dados: 75
Autores: Poot-Poot,Wilberth A; Delgado-Martínez,Rafael; Castro-Nava,Sergio; Segura-Martínez,Ma Teresa; Carreón-Pérez,Alejandro; Hernández-Martínez,Jesús Guillermo.
ABSTRACT The aim of this study was to evaluate the effect of salicylic acid (SA) application on pre-transplant acclimatization of native populations of tomato. SA is a growth regulator that modifies plant growth and development by inducing changes in cell processes, physiology and morphology. Five populations of native tomato were sown in polystyrene trays. Peat moss was used as substrate and plants were maintained at field capacity continuously. After emergence, seedlings were applied during three weeks with different concentration of SA (0.0, 0.01, 0.1, 0.5 and 1.0 μM). A completely random experimental design was used with five replications per treatment. The growth parameters evaluated were height, stem diameter, number of leaves, hypocotyl length,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lycopersicon esculentum; Stress tolerance; Chlorophyll; Carotenoids; Growth regulators.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000400480

Evaluation of vegetation indices and plant growth regulator use on the rooting of azalea cuttings
Provedor de dados: 75
Autores: Hou,Ping-Cheng; Lin,Kuan-Hung; Huang,Yen-Jung; Wu,Chun-Wei; Chang,Yu-Sen.
ABSTRACT The objective of our study was to develop a protocol enabling the use of vegetation indices to evaluate the rooting of Azalea (Rhododendron pulchrum cv. Sweet) cuttings. Six root growth parameters were recorded after exposing those cuttings to rooting media for 47 days. Among plants with different soil-plant analysis development (SPAD) and normalized difference vegetation index (NDVI) values, those with higher values exhibited significantly higher number of roots, root length, and root dry weight, suggesting that reflectance indices were useful in measuring the root growth parameters of the cuttings. Another aim of this work was to study the effects of plant growth regulators (PGRs) on rooting for cutting propagation. Azalea cuttings were soaked...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rhododendron pulchrum; Indole-3-butyric acid; Naphthaleneacetic acid; Plant growth regulator; Salicylic acid; Thiamine.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000200153

Использование мочевины при выращивании синезеленой микроводоросли Spirulina platensis (Nordst.) Geitl. в накопительной культуре
Provedor de dados: 13
Autores: Дробецкая, И. В.
Приводятся данные о влиянии различных концентраций мочевины, а также разных соотношений мочевины и нитратов в питательной среде на рост и химический состав Spirulina platensis в условиях накопительной культуры. Установлено, что высокие концентрации карбамида в среде (300 мг азота (N)/л и выше) угнетают рост водорослей вплоть до гибели клеток. Использование мочевины в комплексе с нитратами (в соотношении 1:4 по N) оказывает положительный эффект, выражающийся в увеличении продуктивности культуры и содержания белка, хлорофилла а, С-фикоцианина и каротиноидов в биомассе.
Tipo: Journal Contribution
Palavras-chave: Мочевина; Нитраты; Питательная среда; Продуктивность культуры; Биомасса; Urea; Nitrates; Nutrient; Growth rate; Biomass Urea Nitrates Growth rate Biomass Nitrates Biomass Urea Growth rate http://aims.fao.org/aos/agrovoc/c_5187 http://aims.fao.org/aos/agrovoc/c_926 http://aims.fao.org/aos/agrovoc/c_8090 http://aims.fao.org/aos/agrovoc/c_16130.
Ano: 2002
URL: http://repository.ibss.org.ua/dspace/handle/99011/392

Сезонные изменения скорости роста и лимитирование фитопланктона питательными веществами в прибрежных водах Черного моря в районе Севастополя
Provedor de dados: 13
Autores: Стельмах, Л. В.; Губанов, В. И.; Бабич, И. И.
Исследована сезонная динамика скорости роста микро- и нанофитопланктона и ее зависимость от концентрации основных биогенных веществ в среде в прибрежных поверхностных водах Черного моря  в районе Севастополя. Показано, что скорость роста фитопланктона лимитируется соединениями азота в течение большей части  года. В холодный период (ноябрь – апрель), когда количество нитратов в воде было сравнительно высоким (1 - 10 мкМ), скорость роста микро- и нанофитопланктона определялась их концентрацией в соответствии с уравнением Михаэлиса-Ментен. В теплое время (май – октябрь) при более низких концентрациях нитратов в среде (в основном  менее 1мкМ) скорость роста водорослей связана гиперболической зависимостью с  содержанием аммония.  Степень азотного лимитирования...
Tipo: Journal Contribution
Palavras-chave: Фитопланктон; Лимитирование; Биогенные вещества; Черное море; Phytoplankton; Limitation; Nutrients; Black Sea Nutrients (mineral) Phytoplankton Phytoplankton http://aims.fao.org/aos/agrovoc/c_13344.
Ano: 2004
URL: http://repository.ibss.org.ua/dspace/handle/99011/135

О связи размерной структуры Mnemiopsis leidyi в Черном море с динамикой его роста и размножения
Provedor de dados: 13
Autores: Заика, В. Е.
Показано, что Mnemiopsis leidyi, как и другие гребневики, имеет очень быстрый линейный рост, близкий к экспоненциальному, а также способен, при дефиците пищи, к "обратному росту", причем размеры и морфо­логия "похудевших" животных не позволяют отличить их от более молодых особей. Из-за этой особенности, по размерной структуре популяций мнемиопсиса невозможно судить об их возрастной структуре. В частно­сти, мелкие особи (длиной до 5 мм), встречаемые в малом числе, могут оказаться не молодью, а взрослыми. Поэтому периоды нереста мнемиопсиса необходимо выделять по массовому количеству личинок длиной 1 - 2 мм и активной откладке яиц животными. Описаны случаи явного нереста, особенности роста и развития ли­чинок мнемиопсиса в Черном море.
Tipo: Journal Contribution
Palavras-chave: Mnemiopsis leidyi; Линейный рост; "обратный рост"; Размерный состав; Linear growth; "reverse growth"; Size composition.
Ano: 2005
URL: http://repository.ibss.org.ua/dspace/handle/99011/219

Relative growth of freshwater prawn Macrobrachium brasiliense (Decapoda, Palaemonidae) and its implications for reproduction
Provedor de dados: 76
Autores: Nogueira,Caio dos Santos; Oliveira,Marcela Silvano de; Jacobucci,Giuliano Buzá; Almeida,Ariádine Cristine de.
ABSTRACT The main objective of this study was to estimate the morphological sexual maturity of Macrobrachium brasiliense (Heller, 1862) and to analyze the relative growth of the species. During one year of sampling, from July 2012 to June 2013, 199 specimens were collected in a stream located in a Cerrado biome, in the Triângulo Mineiro region, state of Minas Gerais. Once identified and sexed, the length of the carapace, the length of the segments of the chelipeds (ischium, merus, carpus, propodus and dactyl) and width of the pleura were measured (mm). The maximum and mean sizes of the carapace length measured 20.5 mm (Mean: 9.6 ± 4.2 mm) and 20.1 mm (Mean: 7.7 ± 3.4 mm) for males and females, respectively. The propodus length for males, and the pleura...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometry; Morphological sexual maturity; Reproductive biology.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212019000100205

Growth and distribution of the great scallop (Pecten maximus) in the English Channel: a modelling approach.
Provedor de dados: 5
Autores: Le Goff, Clement; Lavaud, Romain; Cugier, Philippe; Jean, Frédéric; Flye Sainte Marie, Jonathan.
The great scallop Pecten maximus is currently the most important species in landings (as well in tons as in value) for the French inshore fleet of the English Channel. A French scientific program “COMANCHE” funded by the French National Research Agency (ANR) was conducted to improve our knowledge on the great scallop within its ecosystem, in an integrated way and over the whole area of the English Channel. In that context, the aim of this study is to better understand the determinism of the growth and distribution of the great scallop in the English Channel, integrating both physical and trophic constraints through a modelling approach. The used method is based on the coupling of a 3D hydrodynamical model (MARS3D developed at Ifremer) providing...
Tipo: Text
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00139/24987/23087.pdf

Investigating spatial heterogeneity of von Bertalanffy growth parameters to inform the stock structuration of common sole, Solea solea, in the Eastern English Channel
Provedor de dados: 5
Autores: Du Pontavice, Hubert; Randon, Marine; Lehuta, Sigrid; Vermard, Youen; Savina-rolland, Marie.
In fisheries science, a mismatch between the delineation of a fish stock and the underlying biological population can lead to inaccurate assessment and management. Previous results suggested a potential spatial structuration of the Eastern English Channel (EEC) stock of common sole, Solea solea, in three sub-populations. In this article, we propose to investigate the spatial population structure of common sole in the EEC using the von Bertalanffy Growth Function parameters as indicators of population segregation. In order to test the sub-population hypothesis and evaluate its robustness to data sources, we developed three models, all including an area effect on growth parameters. The first model was aimed at testing a potential data source effect (in...
Tipo: Text
Palavras-chave: Key-words; Von Bertalanffy growth function; Stock structuration; Solea solea; Flatfish; Life-history traits; Metapopulation.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00445/55625/57301.pdf

Growth of an Inshore Antarctic ﬁsh, Trematomus newnesi (Nototheniidae), off Adelie Land
Provedor de dados: 5
Autores: Mahe, Kelig; Elleboode, Romain; Loots, Christophe; Koubbi, Philippe.
Dusky rockcod, Trematomus newnesi, is a widely distributed neritic circumpolar Antarctic fish species. We conducted a study on age and growth of Trematomus newnesi in coastal waters of Adélie Land in East Antarctica. A total of 289 specimens were collected in 2003, 2005, 2006 and 2009. They consisted of 122 females, 132 males and 35 immature specimens. Total length (TL) and total weight (W) of these fish ranged from 13.5 to 25 cm and 19.7 to 174 g respectively for females and from 12 to 20.9 cm and from 24.1 to 144.1 g for males. The TL/W relationship was described by the following parameters: a=7.2.10-3 and b=3.127, showing no significant difference between sex (ANCOVA, P&lt;0.05). Fish age was estimated by counting annual growth increments on polished...
Tipo: Text
Palavras-chave: Antarctic fish; Trematomus newnesi; Otoliths; Growth; Age; Adelie land.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00333/44440/44156.pdf

Impact of nine macroalgal diets on growth and initial reproductive investment in juvenile abalone Haliotis tuberculata
Provedor de dados: 5
Autores: Roussel, Sabine; Caralp, Claire; Leblanc, Catherine; Le Grand, Fabienne; Stiger-pouvreau, Valerie; Coulombet, Céline; Le Goïc, Nelly; Huchette, Sylvain.
The commercial culture of Haliotis tuberculata has recently started in Europe. As abalone is herbivorous, the use of local collected algae as feed may appear advantageous. The nutritional value of eight monospecific seaweed diets was studied using Palmaria palmata (Rhodophyta), filamentous algae, mainly Gracilaria sp. (Rhodophyta), Enteromorpha sp. and Ulva lactuca (Chlorophyta), together with Saccharina latissima, Saccorhiza polyschides, Laminaria digitata and Laminaria hyperborea (Ochrophyta, Phaeophyceae) and a mixed macroalgal diet. An integrative approach consisted in monitoring the seasonal composition changes of these algae in terms of protein, lipid, soluble carbohydrate, fatty acid and amino-acid contents, and to relate it to seasonal growth and...
Tipo: Text
Palavras-chave: Abalone; Algae; Reproduction; Growth; Protein.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00509/62066/66246.pdf

Calcein staining of calcified structures in pearl oyster Pinctada margaritifera and the effect of food resource level on shell growth
Provedor de dados: 5
Autores: Linard, Clementine; Gueguen, Yannick; Moriceau, Jacques; Soyez, Claude; Hui, Belinda; Raoux, Aurore; Cuif, Jean Pierre; Cochard, Jean-claude; Le Pennec, Marcel; Le Moullac, Gilles.
Marine mollusc shell growth has been widely measured using fluorochrome marking. In order to test the efficiency and reliability of calcein staining on P. margaritifera shells and pearls, the present study examined two administration methods, different concentrations and several immersion times.Immersion in a 150 mg.L-1 calcein solution for 12 h to 24 h appeared to be the best method for marking P. margaritifera shells. For pearl marking, injection of a 200 mg.L-1 calcein solution into the pearl pouch was the optimal method. Calcein marking was then used to measure the influence of food resource levels on the shell growth. Groups of 23-month-old P. margaritifera were fed at three trophic levels for two months. The two highest food levels tested (6 000...
Tipo: Text
Palavras-chave: Bivalvia; Pearl; Shell; Growth; Scanning electron microscope.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00028/13907/11195.pdf

Assessing the effects of genotype-by-environment interaction on epigenetic, transcriptomic, and phenotypic response in a Pacific salmon
Provedor de dados: 5
Autores: Christensen, Kris A; Le Luyer, Jeremy; Chan, Michelle T T; Rondeau, Eric B; Koop, Ben F; Bernatchez, Louis; Devlin, Robert H.
Genotype-by-environment (GxE) interactions are non-parallel reaction norms among individuals with different genotypes in response to different environmental conditions. GxE interactions are an extension of phenotypic plasticity and consequently studying such interactions improves our ability to predict effects of different environments on phenotype as well as the fitness of genetically distinct organisms and their capacity to interact with ecosystems. Growth hormone transgenic coho salmon grow much faster than non-transgenics when raised in tank environments, but show little difference in growth when reared in nature-like streams. We used this model system to evaluate potential mechanisms underlying this growth rate GxE interaction, performing RNA-seq to...
Tipo: Text
Palavras-chave: Epigenetics; Transcriptome; GxE; Transgenic; Growth hormone; Salmonid.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00677/78890/81188.pdf

Immunoreactive human growth hormone like peptides in tropical Penaeids and the effect of dietary hGH on Penaeus vannamei larval development
Provedor de dados: 5
Autores: Toullec, J. Y.; Le Moullac, Gilles; Cuzon, Gerard; Van Wormhoudt, A.
Human growth hormone like peptides were present in Penaeus indicus as two molecular forms: one with a molecular weight about 25 kDa which is similar to that of the vertebrate growth hormone and a smaller form of 2 kDa. Quantitative variations of hGH-like peptides in different larval stages of three species of Penaeids (Penaeus vannamei, P. stylirostris, P. indicus) suggest a possible involvement of hGH-like peptides in the development. Human growth hormone (hGH) supplementation in the diet of Penaeus vannamei larvae seems to have a positive effect on the size and on the quality of the animals estimated by their resistance to salinity stress.
Tipo: Text
Palavras-chave: Growth hormone; Growth; P. indicus; P. stylirostris; P. vannamei; Penaeids; Hormone de croissance; Croissance; P. indicus; P. stylirostris; P. vannamei; Pénéides.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/1991/publication-4429.pdf

Chronic dietary exposure to pyrolytic and petrogenic mixtures of PAHs causes physiological disruption in zebrafish - part I: Survival and growth
Provedor de dados: 5
Autores: Vignet, Caroline; Le Menach, Karyn; Mazurais, David; Lucas, Julie; Perrichon, Prescilla; Le Bihanic, Florane; Devier, Marie-hélène; Lyphout, Laura; Frere, Laura; Begout, Marie-laure; Zambonino-infante, Jose Luis; Budzinski, Helene; Cousin, Xavier.
The release of polycyclic aromatic hydrocarbons (PAHs) into the environment has increased very substantially over the last decades leading to high concentrations in sediments of contaminated areas. To evaluate the consequences of long-term chronic exposure to PAHs, zebrafish were exposed, from their first meal at 5 days post fertilisation until they became reproducing adults, to diets spiked with three PAH fractions at three environmentally relevant concentrations with the medium concentration being in the range of 4.6–6.7 μg g−1 for total quantified PAHs including the 16 US-EPA indicator PAHs and alkylated derivatives. The fractions used were representative of PAHs of pyrolytic (PY) origin or of two different oils of differing compositions, a heavy fuel...
Tipo: Text
Palavras-chave: Danio rerio; Life cycle; Polycyclic aromatic hydrocarbon; Heavy oil; Light crude oil; Alkylated PAH; Jaw; Digestion.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00188/29907/28490.pdf

Effects of growth phase and nitrogen limitation on biochemical composition of two strains of Tisochrysis lutea
Provedor de dados: 5
Autores: Da Costa, Fiz; Le Grand, Fabienne; Quere, Claudie; Bougaran, Gael; Cadoret, Jean-paul; Robert, Rene; Soudant, Philippe.
Standard and mutant Tisochrysis lutea strains were grown in batch culture for 10 days under nitrogen (N)-replete and N-reduced conditions to determine the effects of N supply in culture medium and growth phase on microalgal physiology and biochemistry. These two T. lutea strains were compared in terms of growth, morphology, associated free-living bacterial community, viability, intracellular lipid content (as measured by Bodipy staining), chlorophyll autofluorescence, and biochemical composition, with a focus on lipid class and fatty acid compositions. The standard strain (T) reached higher cell counts regardless of N supply in culture medium. In both T. lutea strains, microalgal final cell density was significantly lower in N-reduced medium. Carbohydrates...
Tipo: Text
Palavras-chave: Tisochrysis lutea; Nitrogen limitation; Growth phase; Flow cytometry; Fatty acids; Lipid classes.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00399/51074/51936.pdf

Do protein hydrolysates improve survival and growth of newly-hatched spotted, wolffish (Anarhichas minor), a non-metamorphic aquaculture fish species?
Provedor de dados: 5
Autores: Savoie, A; Le Francois, Nathalie; Cahu, Chantal; Blier, P; Andreassen, I.
Despite larval robustness characterized by the absence of metamorphosis and readiness for exogenous feeding based on commercial feed, the spotted wolffish (Anarhichas minor) displays highly variable survival at first-feeding. In this study, we investigated the use of three dietary concentrations of protein hydrolysates (PH, pre-digested proteins) (0, 10 and 20%) when newly hatched juvenile wolffish were held at three different rearing temperatures namely, 5, 8 and 12 degrees C to determine whether digestion of protein was a limiting factor for fish growth and survival. Final weights for fish at 5, 8,and 12 degrees C at day 60 were respectively 0.35, 1.19 and 2.02 g. Mean specific growth rates were 1.97, 4.01 and 4.88%/day and survival rates were 49.8, 53.4...
Tipo: Text
Palavras-chave: Survival; Growth; First feeding; Protein hydrolysates; Spotted wolffish; Anarhichas minor.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-2141.pdf

Effect of Nitrate, Ammonium and Urea on Growth and Pinnatoxin G Production of Vulcanodinium rugosum
Provedor de dados: 5
Autores: Abadie, Eric; Kaci, Lamia; Berteaux, Tom; Hess, Philipp; Sechet, Veronique; Masseret, Estelle; Rolland, Jean-luc; Laabir, Mohamed.
ulcanodinium rugosum, a recently described dinoflagellate species producing a potent neurotoxin (pinnatoxin G), has been identified in French Mediterranean lagoons and was responsible for recurrent episodes of shellfish toxicity detected by mouse bioassay. Until now, the biology and physiology of V. rugosum have not been fully investigated. We studied the growth characteristics and toxicity of a V. rugosum strain (IFR-VRU-01), isolated in the Ingril lagoon in June 2009 (North-Western French Mediterranean Sea). It was cultivated in Enriched Natural Sea Water (ENSW) with organic (urea) and inorganic (ammonium and nitrate) nitrogen, at a temperature of 25 °C and irradiance of 100 μmol/m2·s−1. Results showed that ammonium was assimilated by cells more rapidly...
Tipo: Text
Palavras-chave: Vulcanodinium rugosum; Pinnatoxin G; Ingril lagoon; Growth; Nitrogen source.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00276/38748/37290.pdf

Factors affecting bacterial biomass and growth in the Duplin River estuary and coastal Atlantic Ocean.
Provedor de dados: 5
Autores: Fallon, R; Newell, S; Sherr, B; Sheer, E.
Bacterial numbers and growth rates were measured in coastal, planktonic systems of the Western Atlantic ocean. Seasonal responses in growth rates of the bacterial assemblage were present at some sites, but these may be related to seasonal changes in substrate supply rather than to changes in temperature. Bacterial growth rates tended to decline with increasing distance from shore. There was evidence for predator-prey population cycles in the bacteria and &lt; 17 mu m protozoa in the Duplin River Estuary which may indicate that the bacterial assemblage serves as prey for protozoan populations. In summer, a significant negative correlation between mu (instantaneous growth rate) and cell numbers in the bacterial assemblage indicated that substrate limitation...
Tipo: Text
Palavras-chave: Protozoa; Plankton; Bacteria; Predators; Grazing; Temperature effects; Seasonal variations; Limiting factors; Interspecific relationships; Nutrients (mineral); Growth.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-955.pdf

Deciphering the effect of food availability, growth and host condition on disease susceptibility in a marine invertebrate
Provedor de dados: 5
Autores: Pernet, Fabrice; Tamayo, David; Fuhrmann, Marine; Petton, Bruno.
Food provisioning influences disease risk and outcome in animal populations in two ways. On the one hand, unrestricted food supply improves the physiological condition of the host and lowers its susceptibility to infectious disease, reflecting a trade-off between immunity and other fitness-related functions. On the other hand, food scarcity limits the resources available to the pathogen and slows the growth and metabolism of the host on which the pathogen depends to proliferate. Here, we investigated how food availability, growth rate and energetic reserves drive the outcome of a viral disease affecting an ecologically relevant model host, the Pacific oyster, Crassostrea gigas. We selected fast- and slow-growing animals, and we exposed them to high and low...
Tipo: Text
Palavras-chave: Energetics; Health; Herpesvirus; Nutrition; Physiological trade-off.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00513/62431/66716.pdf

Responses of European anchovy vital rates and population growth to environmental fluctuations: An individual-based modeling approach
Provedor de dados: 5
Autores: Pethybridge, Heidi; Roos, David; Loizeau, Veronique; Pecquerie, Laure; Bacher, Cedric.
A size-structured, bioenergetics model was implemented to examine the effects of short-term environmental changes on European anchovy, Engraulis encrasicolus, in the North-western Mediterranean Sea. The model approach was based on Dynamic Energy Budget (DEB) theory and details the acquisition and allocation of energy (J d(-1)) during an organisms' full life-cycle. Model calibration was achieved using biometric data collected from the Gulf of Lions between 2002 and 2011. Bioenergetics simulations successfully captured ontogenetic and seasonal growth patterns, including active growth in spring/summer, loss of mass in autumn/winter and the timing and amplitude of multi-batch spawning events. Scenario analysis determined that vital rates (growth and fecundity)...
Tipo: Text
Palavras-chave: Engraulis encrasicolus; NW Mediterranean Sea; Environmental variability; Dynamic Energy Budget theory; Growth; Fecundity.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00127/23822/22490.pdf

Thermodesulfobacterium hydrogeniphilum sp nov., a thermophilic, chemolithoautotrophic, sulfate-reducing bacterium isolated from a deep-sea hydrothermal vent at Guaymas Basin, and emendation of the genus Thermodesulfobacterium
Provedor de dados: 5
Autores: Jeanthon, Christian; L' Haridon, Ste! Phane; Cueff, Valerie; Banta, Amy; Reysenbach, Anna-louise; Prieur, Daniel.
A thermophillic, non-spore-forming, marine, sulfate-reducing bacterium, strain SL6(T), was isolated from deep-sea hydrothermal sulfides collected at Guaymas Basin. The Gram-negative-staining cells occurred singly or in pairs as small, highly motile rods. The temperature range for growth was 50-80degreesC with an optimum at 75degreesC. The pH range for growth at 70degreesC was 6.3-6.8, with an optimum at 6.5. The NaCl concentration range for growth was 5.55 g l(-1), with an optimum at 30 g l(-1). H-2 and CO2 were the only substrates for growth and sulfate reduction. However, growth was stimulated by several organic compounds. Sulfur, thiosulfate, sulfite, cystine, nitrate and fumarate were not used as electron acceptors. Pyruvate, lactate and malate did not...
Tipo: Text
Palavras-chave: Sulfate reduction; Thermodesulfobacterium; Bacteria; Thermophile; Deep sea hydrothermal vent.
Ano: 2002
URL: https://archimer.ifremer.fr/doc/2002/publication-585.pdf

Methane hydrate nucleation and growth from the bulk phase: Further insights into their mechanisms
Provedor de dados: 5
Autores: Fandino, Olivia; Ruffine, Livio.
Methane hydrate nucleation and growth from a bulk phase has been investigated using a quiescent high-pressure view cell. Several hydrate formation/dissociation cycles have been performed at two different initial pressures (10 MPa and 19.5 MPa). Every experiment was performed with a maximum of five consecutive cycles of cooling/heating. For each cycle, the induction time of incipient hydrate formation has been determined. On one hand, results obtained from cycles using fresh water led to the conclusion that the hydrate formation process is rather stochastic, with induction times varying over a large scale. On the other hand, the whole dataset enabled us to investigate on the controversial memory effect of water which may have the ability to fasten the...
Tipo: Text
Palavras-chave: Methane hydrates; Nucleation; Growth; Quiescent reactor; Memory effect.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00159/27007/25260.pdf

Requirement of n-3 long chain polyunsaturated fatty acids for European sea bass (Dicentrarchus labrax) juveniles: growth and fatty acid composition
Provedor de dados: 5
Autores: Skalli, Ali; Robin, Jean.
European sea bass juveniles (14.4+/-0.1 g mean weight) were fed diets containing different levels of fish oil then of n-3 highly unsaturated fatty acids (n-3 HUFA) for 12 weeks. The fish performance as well as fatty acid (FA) composition of neutral and polar lipids from whole body after 7 and 12 weeks feeding were studied. The requirements of juvenile sea bass for n-3 highly unsaturated fatty acids (n-3 HUFA) were studied by feeding fish diets containing six different levels of n-3 HUFA ranging from 0.2% to 1.9% of the diet, with approximately the same DHA/EPA ratio (1.5:1).   The growth rate at the end of the trial showed significant differences. Fish fed low dietary n-3 HUFA (0.2% DM of the diet) showed significantly lower growth than the diet 3 (0.7%),...
Tipo: Text
Palavras-chave: N 3 HUFA; Growth; Fatty acid composition; European sea bass Dicentrarchus labrax.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/publication-501.pdf

Modelling planktic foraminifer growth and distribution using an ecophysiological multi-species approach
Provedor de dados: 5
Autores: Lombard, F.; Labeyrie, L.; Michel, E.; Bopp, L.; Cortijo, E.; Retailleau, S.; Howa, Helene; Jorissen, F.
We present an eco-physiological model reproducing the growth of eight foraminifer species (Neogloboquadrina pachyderma, Neogloboquadrina incompta, Neogloboquadrina dutertrei, Globigerina bulloides, Globigerinoides ruber, Globigerinoides sacculifer, Globigerinella siphonifera and Orbulina universa). By using the main physiological rates of foraminifers (nutrition, respiration, symbiotic photosynthesis), this model estimates their growth as a function of temperature, light availability, and food concentration. Model parameters are directly derived or calibrated from experimental observations and only the influence of food concentration (estimated via Chlorophyll-a concentration) was calibrated against field observations. Growth rates estimated from the model...
Tipo: Text
Ano: 2011
URL: https://archimer.ifremer.fr/doc/00249/36050/34585.pdf

First insight on interactions between bacteria and the marine diatom Haslea ostrearia : Algal growth and metabolomic fingerprinting
Provedor de dados: 5
Autores: Lepinay, Alexandra; Turpin, Vincent; Mondeguer, Florence; Grandet-marchant, Quentin; Capiaux, Herve; Baron, Regis; Lebeau, Thierry.
A first insight on the interactions between bacteria isolated from monospecific cultures of the marine diatom Haslea ostrearia and this microalgae is described in this work. From 28 bacterial isolates, the maximal growth rate and the maximal cell concentration were on average 58% and 27% higher (max. 67% for isolate B22). Isolates B5, B10 (both Saccharospirillum sp.) and B22 (Rhodobacter sp.) were the most efficient. The geographical origin of H. ostrearia from which bacteria were isolated had no impact on the algal growth performances, and a given bacterial isolate led to the same algal growth irrespective of the geographical origin of H. ostrearia. To explain the results obtained, a comprehensive integrative strategy was conducted that analyzed the...
Tipo: Text
Palavras-chave: Bacterial selection; Plant-growth-promoting bacteria; Phycosphere; Metabolomics.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00429/54036/55340.pdf

Impact of pCO2 on the energy, reproduction and growth of the shell of the pearl oyster Pinctada margaritifera
Provedor de dados: 5
Autores: Le Moullac, Gilles; Soyez, Claude; Vidal-dupiol, Jeremie; Belliard, Corinne; Fievet, Julie; Sham-koua, Manaarii; Lo-yat, Alain; Saulnier, Denis; Gaertner-mazouni, N.; Gueguen, Yannick.
The possible consequences of acidification on pearl farming are disruption of oyster metabolism and change in growth. In the laboratory, we studied the impact of pCO2 (3540, 1338 and 541μatm) on the physiology of pearl oysters exposed for 100 days. This experiment was repeated after an interval of one year. Several physiological compartments were examined in pearl oysters: the scope for growth by measuring ingestion, assimilation and oxygen consumption, gametogenesis by means of histological observations, shell growth by measurement and observation by optical and electronic microscopy, and at molecular level by measuring the expression of nine genes of mantle cells implied in the biomineralisation process. Results from both experiments showed that high...
Tipo: Text
Palavras-chave: Global change; Pearl oyster; Bioenergetic; Biomineralization; Pacific Ocean; French Polynesia.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00321/43189/42737.pdf

Larval development and fatty acid composition of Ostrea edulis (L.) fed four different single diets from conditioning to pre-settlement
Provedor de dados: 5
Autores: Gonzalez-araya, Ricardo; Robert, Rene.
Survival, growth and fatty acid composition of Ostrea edulis larvae (L.) fed four different single species, microalgal diets, Tisochrysis lutea (T), Chaetoceros neogracile (Cg), Skeletonema marinoi (Sm) or Tetraselmis suecica (Ts) from broodstock to pre-settlement, were studied. Lower larval growth (5.5m to 6.5m/d) was recorded in progeny continuously fed single S.marinoi or T.suecica, whereas good growth was achieved with single T.lutea (7.8m/d). Larvae, originated from broodstock receiving Sm or Ts, exhibited growth compensation when fed a bispecific balanced diet (TCg). This did not occur when broodstock and larvae were fed Cg or T, for which single or mixed diets led to similar larval growth. Furthermore, survival was high (&gt;90%) regardless of...
Tipo: Text
Palavras-chave: Broodstock conditioning; Diet; Larval development; Ostrea edulis.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00438/54986/56483.pdf

Effect of temperature, water-phase salt and phenolic contents on Listeria monocytogenes growth rates on cold-smoked salmon and evaluation of secondary models
Provedor de dados: 5
Autores: Cornu, M; Beaufort, A; Rudelle, S; Laloux, L; Bergis, H; Miconnet, N; Serot, Thierry; Delignette Muller, M.
Salting and smoking are ancient processes for fish preservation. The effects of salt and phenolic smoke compounds on the growth rate of L. monocytogenes in cold-smoked salmon were investigated through physico-chemical analyses, challenge tests on surface of cold-smoked salmon at 4 degrees C and 8 degrees C, and a survey of the literature. Estimated growth rates were compared to predictions of existing secondary models, taking into account the effects of temperature, water phase salt content, phenolic content, and additional factors (e.g. pH, lactate, dissolved CO2). The secondary model proposed by Devlieghere et al. [Devlieghere, F., Geeraerd, A.H., Versyck, K.J., Vandewaetere, B., van Impe, J., Debevere, J., 2001. Growth of Listeria monocytogenes in...
Tipo: Text
Palavras-chave: Phenolic compounds; Validation criteria; Microbial exposure assessment; Predictive microbiology; L. monocytogenes; Fishery products.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-3953.pdf

No efficiency of the lateral system on nocturnal feeding in the European sea bass (Dicentrarchus labrax L.)
Provedor de dados: 5
Autores: Faucher, Karine; Dutto, Gilbert; Coves, Denis; Aubert, Anne; Lagardere, Jean-paul.
In order to evaluate the effect and consequence of lateral system inactivation on fish nocturnal feeding, the differential growth of groups of European sea bass maintained in different rearing conditions were compared. Whereas some fish with intact lateral system (placebo fish) were placed under a photoperiod of 12-L: 12-D, other placebo fish were kept in the dark. In the same way, fish deprived of lateral system by section of their lateral system nerves and antibiotic treatment were placed under a photoperiod of 12-L: 12-D and the others in the dark. For each of these four rearing conditions, two sets of experiment were realized. Percent mortality, feed rhythm, averaged daily feed demand, specific growth rate and feed efficiency were compared among these...
Tipo: Text
Palavras-chave: Feed efficiency; Growth; Nocturnal feeding; Photoperiod; Lateral system; European sea bass.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-2267.pdf

The anti-angiogenic herbal composition Ob-X inhibits adipose tissue growth in obese mice
Provedor de dados: 17
Autores: Min-Young Kim; Jong Cheon Hahm; Byung-Young Park; Hee Suk Lee; Eun kyu Park; Michung Yoon; Jinmi Lee; Yeonhee Hong; Seolwha Choi; Hyunghee Lee.
Objective: The growth and development of adipose tissue are thought to be associated with angiogenesis and extracellular matrix remodeling. Since the composition of the herbal extract called Ob-X has been shown to have both anti-angiogenic and matrix metalloproteinase (MMP)-inhibiting activities, we hypothesized that growth of adipose tissue can be regulated by Ob-X. Materials and Methods: The effects of Ob-X on angiogenesis and extracellular matrix remodeling were measured using in vitro and ex vivo assays. The effects of Ob-X on adipose tissue growth were investigated with nutritionally obese mice. Results: Ob-X inhibited angiogenesis in a dose-dependent manner in the human umbilical vein endothelial cell (HUVEC) tube formation assay in vitro and the rat...
Tipo: Manuscript
Palavras-chave: Biotechnology.
Ano: 2009
URL: http://precedings.nature.com/documents/2970/version/1

A new vision of the origin and the oocyte development in the Ostariophysi applied to Gymnotus sylvius (Teleostei: Gymnotiformes)
Provedor de dados: 83
Autores: França,Gisleine Fernanda; Grier,Harry J.; Quagio-Grassiotto,Irani.
Based on new knowledge coming from marine perciform species, the origin of oocytes and their development in the Ostariophysi, Gymnotus sylvius is described. In both Gymnotus sylvius and marine perciform fish, oogonia are found in the germinal epithelium that forms the surface of the ovarian lamellae. At the commencement of folliculogenesis, proliferation of oogonia and their entrance into meiosis gives rise to germ cell nests that extend into the stroma from the germinal epithelium. Both cell nests and the germinal epithelium are supported by the same basement membrane that separates them from the stroma. At the time of meiotic arrest, oocytes in a cell nest become separated one from the other as processes of prefollicle cells, these being derived from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Folliculogenesis; Primary growth; Secondary growth; Maturation; Ovulation.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000400008

Survival, growth and metabolic parameters of silver catfish, Rhamdia quelen, juveniles exposed to different waterborne nitrite levels
Provedor de dados: 83
Autores: Lima,Ronaldo L. de; Braun,Neiva; Kochhann,Daiani; Lazzari,Rafael; Radünz Neto,João; Moraes,Bibiana S.; Loro,Vania L.; Baldisserotto,Bernardo.
High nitrite (NO2-) levels may develop in aquaculture systems due to high fish density, but studies of lethal concentration values and the effect of NO2- on metabolic parameters and growth are scarce. Consequently, in this study was verified the lethal concentration at 96 h (LC50-96h) for (NO2-) in juvenile silver catfish, Rhamdia quelen and the effect of four waterborne NO2- concentrations (0.06, 0.46, 1.19, and 1.52 mg.L-1) on growth, and hepatic and muscular lactate, glucose, glycogen and protein. Nitrite LC50-96h was 20.46 (confidence interval: 16.10-23.68) mg.L-1. In the growth experiment, exposure to NO2- did not affect weight, length or specific growth rate, but due to mortality (66.7% and 100% after 20 and 40 days, respectively), biomass of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nitrogenous compound; Jundiá; Glucose; Lactate.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000100013

Promotion of Ovarian Follicular Development by Injecting Vascular Endothelial Growth Factor (VEGF) and Growth Differentiation Factor 9 (GDF-9) Genes
Provedor de dados: 19
Autores: SHIMIZU, Takashi; 清水, 隆.
Ovarian follicular development in mammals is the complex process including endocrine, paracrine and autocrine. There is the development of four basic stages of ovarian follicles, i.e. the primordial, primary, secondary and tertiary or Graafian follicles. There are few blood vessels in the cortical area where primordial and primary follicles are assembled. The development of these follicles is stimulated by oocytes derived factor including growth differentiation factor 9 (GDF-9) or bone morphogenetic protein 15 (BMP-15). Porcine GDF-9 complementary DNA (cDNA) cloned, and then injected its gene into the ovary in gilts. The injection of porcine GDF-9 gene resulted in an increase in the number of primary, secondary and tertiary follicles, concomitant with a...
Palavras-chave: Follicle development; Gene injection; Growth differentiation factor 9 (GDF-9); Ovary; Vascular endothelial growth factor (VEGF).
Ano: 2005
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4059

Nutritional Studies and Development of a Practical Feed for Milkfish ( Chanos chanos) Culture in Zanzibar, Tanzania
Provedor de dados: 20
Autores: Jiddawi, N.S.; Mwangamilo, J.J.
A study was conducted to find a suitable diet and feeding level for the culture of milkfish (Chanos chanos) in Zanzibar. Two growth trials and one digestibility trial were done. The first growth trial was conducted using 25, 32 and 40% protein diets to determine the optimal level that could be used for the second growth trial on feeding levels. There were no significant differences on feed intake and growth performance of milkfish among the treatments (P&lt;0.896). Body composition analysis showed that fish had more fat (lipid) when fed 32 than 25 and 40% protein diets. The digestibility of protein increased with increasing protein levels: it was 87.3, 92 and 93% respectively. There were no significant differences among the diets (P&lt;0.291). The 32%...
Tipo: Journal Contribution
Palavras-chave: Milkfish culture.
Ano: 2003
URL: http://hdl.handle.net/1834/962

Análisis del crecimiento y la mortalidad de Anisotremus interruptus (Gill) (Perciformes: Haemulidae) en la Costa de Colima, México
Provedor de dados: 20
Autores: Espino-Barr, E.; Gallardo-Cabello, M.; González-Orozco, F.
This paper deals with the growth and mortality analysis of the burrito grunt Anisotremus interruptus on the coast of Colima, México. The estimated growth parameters are: L ¥ = 50.59 cm; W ¥ = 5,051.04 g; k = 0.147 years-1; to = -0.916 years; A0.95 = 19.46 years. Most of the growth occurred during the first year of life, when the grunt grows 12.52 cm, the second year it grows 4.95 cm and the third, 4.60 cm. The highest value of the condition index took place between February and September. The total mortality rate (Z) was calculated as 0.53 years-1. These values are basic for the plan of administration of the fishery of this species.
Tipo: Journal Contribution
Palavras-chave: Growth; Mortality; Growth; Mortality; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_4945.
Ano: 2004
URL: http://hdl.handle.net/1834/3060

Crecimiento de la merluza (Merluccius hubbsi) del Atlántico sudoccidental entre 1993-2003 al norte y sur de 41º S
Provedor de dados: 20
Autores: Renzi, M.A.; Santos, B.A.; Abachian, V.
The reading of otoliths sagittae collected during the INIDEP (National Institute for Fisheries Research and Development, Argentina) assessment cruises carried out in the 1993-2003 period allowed to estimate length and weight growth parameters and the condition factor of hake (Merluccius hubbsi) and to prospect the two management units of the species north and south of 41ºS (Argentine Sea, SW Atlantic). A great variability in total length and weight in each age group was observed; nevertheless, stable mean length and weight values per age group were observed in the period analyzed. Besides, the values estimated to determine possible growth variations in each and between both management units north and south of 41ºS were compared. The comparison of growth...
Tipo: Journal Contribution
Palavras-chave: Growth curves; Stock identification; Condition factor; Marine environment; Marine environment; Http://aims.fao.org/aos/agrovoc/c_4610.
Ano: 2009
URL: http://hdl.handle.net/1834/3458

The implications of heterozygosity in the scallop &lt;i&gt;Placopecten magellanicus&lt;/i&gt; (Gmelin)
Provedor de dados: 27
Autores: Volckaert, F.A.M.J.
In many instances, variation in phenotypic traits has been correlated with electrophoretic heterozygosity of plants, vertebrates and invertebrates. Enhanced growth of selected heterozygous molluscs has been attributed to lower energetic requirements for basal metabolism. I investigated the correlation between single- and multiple-locus heterozygosity and phenotype of the juvenile scallop &lt;i&gt;Placopecten magellanicus&lt;/i&gt; (Gmelin). Two questions were being asked: do heterozygous scallops grow faster and which metabolic processes are affected by the degree of heterozygosity? No significant correlation was observed between genotype (scored at 6 polymorphic loci) and growth in six different samples of juvenile scallops, all belonging to the same time...
Tipo: Info:eu-repo/semantics/doctoralThesis
Ano: 1988
URL: http://www.vliz.be/imisdocs/publications/226571.pdf

Effect of algal ration and substitution of algae by manipulated yeast diets on the growth of juvenile &lt;i&gt;Mercenaria mercenaria&lt;/i&gt;
Provedor de dados: 27
Autores: Coutteau, P.; Hadley, N.H.; Manzi, J.J.; Sorgeloos, P.
The development of a cost-effective algal substitute would greatly reduce the operating costs of bivalve hatcheries. Previous work has resulted in the development of a yeast diet with improved digestibility and nutritional composition. The use of this yeast product as a partial algal substitute for the culture of juvenile hard clams &lt;i&gt;Mercenaria mercenaria&lt;/i&gt; was investigated in a series of growth experiments. Juveniles of the hard clam (1 mg live weight) were batch cultured in a 1 8 1 recirculating system for 2 or 3 weeks. The optimal weight-specific daily ration for a mixture (50/50 on dry weight basis) of &lt;i&gt;Isochrysis galbana&lt;/i&gt; (clone T-Iso) and &lt;i&gt;Chaetoceros gracilis&lt;/i&gt; was found to be 1.5 to 2% dry weight per...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Algae Aquaculture techniques Clam culture Diets Food organisms Growth Yeasts Mercenaria mercenaria (Linnaeus; 1758) [Northern quahog].
Ano: 1994
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2567

Evaluation of Plant Growth Regulator, Immunity and DNA Fingerprinting of Biofield Energy Treated Mustard Seeds (Brassica juncea)
Provedor de dados: 21
Autores: Trivedi, Mahendra Kumar; Branton, Alice; Trivedi, Dahryn; Nayak, Gopal.
Among the oilseeds grown around the world, mustard is one of the important crop worldwide due to its wide adaptability and high yielding capacity. Owing to the importance of its utilities as condiment, cooking oil and some medical aids, the demand for its seed production is too high. The present study was carried out to evaluate the impact of Mr. Trivedi’s biofield energy treatment on mustard (Brassica juncea) for its growth-germination of seedling, glutathione (GSH) content in leaves, indole acetic acid (IAA) content in shoots and roots and DNA polymorphism by random amplified polymorphic-DNA (RAPD). The sample of B. juncea was divided into two groups. One group was remained as untreated and coded as control, while the other group was subjected to Mr....
Tipo: Journal paper
Palavras-chave: Crop health; Quality; Protection.
Ano: 2015
URL: http://orgprints.org/30774/1/10.11648.j.aff.20150406.16.pdf

It’s not always about growth! Development dynamics and management in food businesses and chains
Provedor de dados: 21
Autores: Münchhausen, von, Susanne; Häring, Anna Maria; Kvam, Gunn-Turid; Knickel, Karlheinz.
Growing small and medium enterprises face specific challenges, especially when they aim to maintain high quality products and processes. While growing, they tend to converge either towards niche markets or mainstream commodity markets, and as a result sacrifice higher quality and value. With this paper, we aim to show more about the growth processes of small and medium size enterprises and their related food supply chains. The focus is on the management of individual businesses, the coordination and cooperation along chains and the required realignment during growth. Particular attention is paid to discontinuities and an identification of the factors that limit or enable the sustainable development of food enterprises and chains. The methodological...
Tipo: Journal paper
Palavras-chave: Farm economics; Produce chain management.
Ano: 2017
URL: http://orgprints.org/30735/7/IJSAF-267-Special-Issue-munchhausen_etal.pdf

Understanding Trichoderma in the root system of Pinus radiata: associations between rhizosphere colonisation and growth promotion for commercially grown seedlings
Provedor de dados: 21
Autores: Hohmann, Pierre; Jones, E. Eirian; Hill, Robert A.; Stewart, Alison.
Two Trichoderma isolates (T. hamatum LU592 and T. atroviride LU132) were tested for their ability to promote the growth and health of commercially grown Pinus radiata seedlings. The colonisation behaviour of the two isolates was investigated to relate rhizosphere competence and root penetration to subsequent effects on plant performance. Trichoderma hamatum LU592 was shown to enhance several plant health and growth parameters. The isolate significantly reduced seedling mortality by up to 29 %, and promoted the growth  of shoots (e.g. height by up to 16 %) and roots (e.g. dry weight by up to 31 %). The introduction of LU592 as either seed coat or spray application equally improved seedling health and growth demonstrating the suitability of both application...
Tipo: Journal paper
Palavras-chave: Crop health; Quality; Protection.
Ano: 2011
URL: http://orgprints.org/30436/1/Hohmann%20et%20al.%20-%202011%20-%20Understanding%20iTrichodermai%20in%20the%20root%20system%20of%20iPinus%20radiatai%20associations%20between%20rhizosphere%20colonisation.pdf

Analysis of Genetic Diversity Using Simple Sequence Repeat (SSR) Markers and Growth Regulator Response in Biofield Treated Cotton (Gossypium hirsutum L.)
Provedor de dados: 21
Autores: Trivedi, Mahendra Kumar; Trivedi, Dahryn; Branton, Alice; Nayak, Gopal.
Cotton is the most important crop for the production of fiber that plays a key role in economic and social affairs. The aim of the study was to evaluate the impact of biofield energy treatment on cotton seeds regarding its growth, germination of seedling, glutathione (GSH) concentration, indole acetic acid (IAA) content and DNA fingerprinting using simple sequence repeat (SSR) markers for polymorphism analysis. The seeds of cotton cv. Stoneville-2 (Gossypium hirsutum L.) was obtained from DNA Land Marks Inc., Canada and divided into two groups. One group was remained as untreated, while the other was subjected to Mr. Trivedi biofield energy and referred as treated sample. The growth-germination of cotton seedling data showed higher germination (82%) in...
Tipo: Journal paper
Palavras-chave: Crop health; Quality; Protection.
Ano: 2015
URL: http://orgprints.org/30772/1/10.11648.j.ajaf.20150305.17.pdf

Effect of variety choice and use of resistant rootstock on crop yield and quality parameters of tomato plants grown in organic, low input and conventional production systems/growth media
Provedor de dados: 21
Autores: Theodoropoulou, A.; Giotis, C.; Hunt, J.; Gilroy, J.; Toufexi, E.; Liopa-Tsakalidis, A.; Markellou, A.; Lueck, L.; Seal, C.; Leifert, C.
Soil-borne diseases are one of the most important problems in organic and other ‘low input’ soil-based greenhouse production systems. While chemical soil disinfection has been the method of choice in conventional farming systems, soil steaming has been the main strategy for the control of soil borne diseases in organic production. Both methods are extremely expensive and have been increasingly restricted for environmental reasons by government and organic standard setting bodies respectively.  The use of tolerant varieties and of grafting onto resistant rootstocks were evaluated as potential replacements for soil steaming in organic and low input systems and found to be as effective in reducing root disease and increasing root fresh weight, fruit yield and...
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop health; Quality; Protection Breeding; Genetics and propagation Vegetables.
Ano: 2007
URL: http://orgprints.org/10449/1/theodoropoulou%2Detal%2D2007%2Dresistant_rootstocks.pdf

Control of the vegetative growth of 'Shinseiki' pear trees by prohexadione calcium and root pruning
Provedor de dados: 86
Autores: Carra,Bruno; Fachinello,José Carlos; Abreu,Everton Sozo de; Pasa,Mateus da Silveira; Spagnol,Daniel; Giovanaz,Marcos Antônio; Silva,Carina Pereira da.
Abstract: The objective of this work was to evaluate the effect of prohexadione calcium (P-Ca) and root pruning (RP) on the control of the vegetative growth and on fruit production and quality of 'Shinseiki' pear trees, under the climatic conditions of Southern Brazil. The experiment was conducted during the 2013/2014 and 2014/2015 crop seasons, in a 15-year-old orchard of 'Shinseiki' pear trees, trained to a central-leader system, with a 2x5 m spacing between plants, grafted onto Pyrus calleryana rootstock. The experiment was carried out in a randomized complete block design, with six treatments and four replicate. The treatments consisted of the control (without P-Ca application or RP), two P-Ca rates (300 and 600 mg L-1), two root pruning intensities...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pyrus pyrifolia; Fruit quality; Growth regulators; High-density orchard; Vegetative vigor; Yield components.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000300177

Estimation of weed dry biomass and grain yield as a function of growth and yield traits under allelopathic weed management in maize
Provedor de dados: 87
Autores: MAHMOOD,A.; KHALIQ,A.; IHSAN,M.Z.; NAEEM,M.; DAUR,I.; MATLOOB,A.; EL-NAKHLAWY,F.S.
Growing concerns about toxicity and development of resistance against synthetic herbicides have demanded looking for alternative weed management approaches. Allelopathy has gained sufficient support and potential for sustainable weed management. Aqueous extracts of six plant species (sunflower, rice, mulberry, maize, brassica and sorghum) in different combinations alone or in mixture with 75% reduced dose of herbicides were evaluated for two consecutive years under field conditions. A weedy check and S-metolachlor with atrazine (pre emergence) and atrazine alone (post emergence) at recommended rates was included for comparison. Weed dynamics, maize growth indices and yield estimation were done by following standard procedures. All aqueous plant extract...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Allelopathy; Crop growth indices; Mulberry; Plant combinations.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000100023

Allelopathic Influence of Residues from Sphagneticola trilobata on Weeds and Crops
Provedor de dados: 87
Autores: HERNÁNDEZ-ARO,M.; HERNÁNDEZ-PÉREZ,R.; GUILLÉN-SÁNCHEZ,D.; TORRES-GARCIA,S.
The allelopathic effect studied in many cultures has currently generated great expectations that displayed a natural and environmentally friendly tool for weed management using bioherbicides. The objective of this work was to assess allelopathic influence of residues of S. trilobata on the germination and growth of weeds, as well as their relation with some crops and effects on soil properties. Results show that residues from S. trilobata have inhibited the germination of weeds (31.6 - 72%), increasingly with the applied dose. All residue doses of this specie have inhibited dicotyledonous germination, but only maximum concentration has affected monocotyledons. The residues did not affect onion germination, but stimulated it in radish and tomato, while the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelopathy; Residues; Azotobacter; Soil microflora.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000100081

Hormesis Effect of Herbicides Subdoses on Submerged Macrophytes in Microassay Conditions
Provedor de dados: 87
Autores: PERES,L.R.S.; DELLA VECHIA,J.F.; CRUZ,C.
ABSTRACT: The goal of the study was to evaluate the effect of 2.4-D and clomazone doses on the growth of the submerged macrophytes Egeria densa and E. najas, in microassay conditions. Therefore, tests were conducted in a bioassay room at the temperature of 27.0 ± 2.0 °C, photoperiod of 24 light hours and illumination of 500 lux. The apical fragments (shoot tips) of the macrophytes with 5.0 cm of length were transferred to test tubes with a 100 mL capacity, containing 70 mL of water. The tested concentrations were: 0.1; 1.0; 3.5; 11.2; 36.5; and 118.0 mg L-1 and a control sample with seven replications. In the test with 2.4-D on E. densa, in the control sample treatment and the 0.1 mg L-1 treatment there was shorter length: at 1.0; 3.5; 11.2; 36.5 and 118.0...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth stimulation; Aquatic plants; Environmental dynamics; Pesticides.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100275

A Spatial Panel Simultaneous-Equations Model of Business Growth, Migration Behavior, Local Public Services and Household Income in Appalachia
Provedor de dados: 31
Autores: Gebremariam,   Gebremeskel H.; Gebremedhin,   Tesfa G.; Schaeffer,   Peter V.; Phipps,   Tim T.; Jackson,   Randall W.
In this paper we develop a spatial panel simultaneous-equations model of business growth, migration behavior, local public services and median household income in a partial lag-adjustment growth-equilibrium framework and utilizing a one-way error component model for the disturbances. This model is an extension of the “jobs follow people or people follow jobs” literature and it improved previous models in the growth-equilibrium tradition by: (1) explicitly modeling local government and regional income in the growth process; (2) explicitly modeling gross in-migration and gross out-migration separately in order to spell out the differential effects, which used to be glossed over under net population change in previous studies; (3) explicitly incorporating...
Tipo: Conference Paper or Presentation
Palavras-chave: Community/Rural/Urban Development.
Ano: 2007
URL: http://purl.umn.edu/9895

RECENT EVIDENCE ON AGRICULTURAL EFFICIENCY AND PRODUCTIVITY IN CHINA: A METAFRONTIER APPROACH
Provedor de dados: 31
Autores: Rungsuriyawiboon,   Supawat; Xiaobing,   Wang.
Economic reform in China helped transform the structure and volume of agricultural production and resulted in significant changes in efficiency and productivity. This paper measures agricultural technical efficiency (TE) and total factor productivity (TFP) in China by allowing producers operating under their own technologies. A metafrontier function approach is applied using a panel data set on 28 provinces during 1991-2005. The provinces are categorized into advanced- technology and low-technology provinces. Based on the metafrontier estimation, TFP growth is decomposed into TE change (TEC), technical change (TC) and scale efficiency change (SEC). This information is useful for policy makers to design suitable policies in enhancing agricultural TE and TFP...
Tipo: Working or Discussion Paper
Palavras-chave: Metafrontier; Agriculture; China; Technical Efficiency; Total Factor Productivity.; Agribusiness; Environmental Economics and Policy; Farm Management; Industrial Organization; Production Economics; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies; Q16; Q18; P27.
Ano: 2007
URL: http://purl.umn.edu/90863

Women Farmer’s and Agriculture Growth: Challenge and Perspective for Africa face the economic crisis
Provedor de dados: 31
Autores: Adeniyi,   Labintan.
In poor countries the agricultural sector is essential to growth, poverty reduction, and food security. In Sub- Saharan Africa, the agricultural sector employs 65 percent of the labor force and generates 32 per cent of GDP growth (Christian Friis Bach and all, 2008).More than half of rural employment in Sub- Saharan Africa consists of self-employed farmers, many of whom are women. Women generally own less land and the land they have is often of lower quality than the land owned by men. According to the International Development Research Centre, women in Africa only own 1 per cent of the land. Women have to contend with limited access to financial and technical resources. Women lack political influence. However the recent economic crisis that has affected...
Tipo: Conference Paper or Presentation
Palavras-chave: Women Farmer-Africa- Economic Crisis-Challenge and Perspective; International Development; Labor and Human Capital.
Ano: 2010
URL: http://purl.umn.edu/97062

Comparative Research on the Economic Development of Xinjiang in the Perspective of Development of the West Regions
Provedor de dados: 31
Autores: Liu,   Wenqiang; Xuehelaiti,   Mahemuti.
In the context of Development of the West Regions, by using the annual data from 1999 to 2009 in whole China and 12 provinces of the western regions, we analyze the achievements of socio-economic development of Xinjiang Uygur Autonomous Region from 1999 to 2009 as follows: the economic aggregate has increased prominently and the growth rate is increasing ceaselessly; the primary industry, secondary industry and tertiary industry develop evenly, and the industrial structure is incessantly optimized; the quality of economic growth is promoted increasingly and the living standard of people is improved greatly; the primary industry, secondary industry and tertiary industry stride in tandem, and the momentum of growth is strong. We conduct horizontal comparison...
Tipo: Journal Article
Palavras-chave: Development of the West Regions; Xinjiang; Economic development; Comparative analysis; China; Agribusiness.
Ano: 2011
URL: http://purl.umn.edu/118285

A Multi-level Analysis of Public Spending, Growth and Poverty Reduction in Egypt
Provedor de dados: 31
Autores: Fan,   Shenggen; Al-Riffai,   Perrihan; El-Said,   Moataz; Yu,   Bingxin; Kamaly,   Ahmed.
The overarching objective of this report is to use a multi-level analysis approach to assess the effects of various government spending on growth and poverty reduction and their trade-offs between these two goals and to offer future policy options to achieve the Millennium Development Goals (MDGs). The study involves analyses and simulations at the different levels: household, sector/region as well as macro levels. Different analytical tools are used at the different levels. Analyses at the different levels are initially executed independently, but final synergy is drawn through an integrated macro-micro framework. This new approach has enabled us to gain new knowledge as well as new policy insights. The study confirmed previous studies that universal...
Tipo: Working or Discussion Paper
Palavras-chave: Food Security and Poverty.
Ano: 2006
URL: http://purl.umn.edu/42813

Raising the Productivity of Public Investments in Zambia’s Agricultural Sector.
Provedor de dados: 31
Autores: Govereh,   Jones; Shawa,   Julius J.; Malawo,   Emma; Jayne,   Thomas S.
Agriculture provides the main support for Zambia’s rural economy, and because of this, growth in the agricultural sector is the clearest avenue through which poverty reduction can be achieved in Zambia. Yet despite widespread recognition of the strong connection between agricultural development and poverty reduction, there is continuing under-provision of public goods investments for over a decade. Zambia’s primary policy objective of achieving accelerated growth and competitiveness in the agricultural sector cannot be achieved unless adequate public resources are committed towards catalyzing the desired growth. Strong evidence from southern Africa as well as throughout the world indicates that long–term public investment in research and development,...
Tipo: Report
Palavras-chave: Food security; Food policy; Zambia; Public investment; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies; Q18.
Ano: 2006
URL: http://purl.umn.edu/54479

Food prices and obesity: long-run effect in US metropolitan areas
Provedor de dados: 31
Autores: Xu,   Xin; Variyam,   Jayachandran N.; Zhao,   Jenny; Chaloupka,   Frank J.
Once considered as a serious public health issue only in developed countries, now overweight and obesity have dramatically increased in low- and middle-income countries, especially in urban settings (WHO, 2008). The main purpose of this study is to explore the economic incentives for this rapid growth in obesity rates, by studying variations in obesity over time and across geographic regions in the United States. Although a number of researchers and policymakers have devoted significant resources to address the recent rapid rise in obesity in the United States, “the prevalence of overweight and obesity has increased sharply since the mid 1970s” (Centers for Disease Control, 2008) and most of this increase occurred in the 1980s and 1990s (Cutler, et al.,...
Tipo: Conference Paper or Presentation
Palavras-chave: Consumer/Household Economics; Food Consumption/Nutrition/Food Safety; Health Economics and Policy.
Ano: 2009
URL: http://purl.umn.edu/53344

Fiscal policy consistency and implications for macroeconomic aggregates: the case of Uganda
Provedor de dados: 31
Autores: Hisali,   Eria.
The relationship between growth in monetary aggregates and price changes continues to be a subject of considerable debate both in the academic and policy circles. Whereas the more ‘conservative’ policy makers hold that growth in monetary aggregates bear proportionately on prices, ‘liberals’ on the other hand suggest a fairly weak relationship and instead mainly attribute sustained price changes to other innovations (including structural weaknesses and poor productive capacity). This study employed vector autoregression techniques (and its variants) to examine both short term as well as long term interactions between selected macroeconomic aggregates with particular focus on the relationship between money growth and price changes. Results from both the...
Tipo: Report
Palavras-chave: Fiscal stance; Macroeconomic aggregates; Structural vector autogression; Budget accounting approach; EPRC; Agricultural Finance; Financial Economics; Labor and Human Capital; Production Economics; Productivity Analysis; H62; H63; H69.
Ano: 2010
URL: http://purl.umn.edu/102489

Macroeconomic Policy and Sustainability
Provedor de dados: 31
Autores: Harris,   Jonathan M.
The trend in mainstream economic thought about macroeconomic policy has been towards minimalism. In the optimistic Keynesian phase of the 1960's, it was assumed that both fiscal and monetary policy were effective tools for macroeconomic management. But the influence of monetarist and New Classical critiques has led to a gradual erosion of theoretical support for activist government policy. First fiscal policy fell by the wayside, perceived as too slow and possibly counterproductive in its impacts. Then New Classical and rational expectations critiques suggested that even monetary policy was ineffective. Thus the role of government policy has been reduced to a cautious effort not to make things worse - in effect a return to an economics of laissez-faire. In...
Tipo: Working or Discussion Paper
Palavras-chave: Macroeconomics; Growth; Equity; Sustainable development; Agribusiness.
Ano: 2001
URL: http://purl.umn.edu/15573

Effects of light stress on the growth of the epiphytic orchid Cattleya forbesii Lindl. X Laelia tenebrosa Rolfe
Provedor de dados: 88
Autores: STANCATO,GIULIO C.; MAZZAFERA,PAULO; BUCKERIDGE,MARCOS S.
Considering the performance of CAM epiphytes under high levels of radiation or in shaded environments, with growth rate proportional to light intensity, the objective of this work was to evaluate the effects of long-term light stress on the growth of a Brazilian epiphytic orchid, Cattleya forbesii Lindl. X Laelia tenebrosa Rolfe. Two groups of plants were used in the first experiment, one under 90% (&lt;FONT FACE=Symbol&gt;@&lt;/FONT&gt; 1,650 µmol.m-2.s-1) of Photosynthetically Active Radiation (PAR) and the other maintained under 22.5% (&lt;FONT FACE=Symbol&gt;@&lt;/FONT&gt; 400 µmol.m-2.s-1). In the second experiment the diffusive resistance, transpiration rate and fluorescence levels were monitored for plants that were under 22.5% of PAR, under 90% and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Photoinhibition; Storage; Orchids; Pseudobulb.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042002000200011

Effect of Dietary Lysine Regimens on Growth Performance and Meat Composition in Aseel Chicken
Provedor de dados: 89
Autores: Hussain,M; Mahmud,A; Hussain,J; Qaisrani,SN.
ABSTRACT A study was designed with the objective, to evaluate the effect of dietary lysine (Lys) regimens on growth performance and meat composition of Aseel chicken. In total, 540 day old chicks, 180 from each variety, were randomly assigned to 9 experimental groups in a 3 (Varieties: Mianwali (MW), Peshawari (PW), and Lakha (LK)) × 3 (Lys regimens: L1, L2 and L3:1.35, 1.30 and 1.25%) factorial arrangement under randomized complete block design (RCBD) with sex as block. Each experimental group was replicated 6 times with 10 birds in each with average weight of 29 gram. Feed intake (FI), weight gain (WG) and feed:gain ratio (F:G) parameters of growth performance and Dry Matter (DM), Ash, Crude Protein (CP) and Ether Extract (EE) parameters of meat...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino Acid; Aseel Chicken; Growth Performance; Meat Composition.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200203

THE SINGLE NUCLEOTIDE POLYMORPHISMS OF MYOSTATIN GENE AND THEIR ASSOCIATIONS WITH GROWTH AND CARCASS TRAITS IN DAHENG BROILER
Provedor de dados: 89
Autores: Zhang,XX; Ran,JS; Lian,T; Li,ZQ; Yang,CW; Jiang,XS; Du,HR; Cui,ZF; Liu,YP.
ABSTRACT Myostatin (MSTN) is a negative regulator of skeletal muscle growth. In order to investigate whether there is a correlation between MSTN polymorphisms and chicken production performance, in this study, single nucleotide polymorphisms (SNPs) in MSTN gene were examined across 180 Daheng broilers by direct sequencing of PCR product, and the correlations between the genotype and body weight at the age of 1-10 weeks and carcass traits at the age of 73 day were analyzed. Five SNPs (rs313622770, rs313744840, rs316247861, rs314431084, rs317126751) of MSTN gene were identified across Daheng broiler samples, and four haplotypes were reconstructed based on the five SNPs. Results of association analysis showed that four (rs313622770, rs313744840, rs316247861...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Association analysis; Chicken; Production performance; MSTN; SNP.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300319

Co-Supplementation of Dietary Seaweed Powder and Antibacterial Peptides Improves Broiler Growth Performance and Immune Function
Provedor de dados: 89
Autores: Bai,J; Wang,R; Yan,L; Feng,J.
ABSTRACT The feasibility of Laminaria japonica powder (LJP) combined with cecropin as a dietary supplement to enhance broiler growth performance and immune function was evaluated in this study. In total, 648 one-day-old Arbor Acres broiler chicks were randomly distributed into nine numerically-equal treatment groups: T1 (control group; fed a basal diet); T2 (fed the basal diet supplemented with 1% LJP);T3 (fed the basal diet supplemented with 300mg cecropin/kg); and T4,T5,T6,T7,T8 and T9, individually fed with the dietary supplemented with varying levels of LJP and cecropin). Compared with the control, dietary of LJP or cecropin supplementation slightly improved feed conversion ratio (FCR). However, the dietary supplementation of LJP combined with cecropin...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Cecropin; Laminaria japonica powder; Live Performance.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200308

Effects of Non-phytate Phosphorus and 1a-Hydroxycholecalciferol on Growth Performance, Bone Mineralization, and Carcass Traits of Broiler Chickens
Provedor de dados: 89
Autores: Han,JC; Ma,K; Wang,JG; Chen,GH; Zhang,JL; Qu,HX; Yan,YF; Cheng,YH.
ABSTRACT This study evaluated the effects of dietary non-phytate phosphorus (NPP) and 1a-hydroxycholecalciferol (1a-OH-D3) on the growth performance, bone mineralization, and carcass traits of 1- to 21-day-old broiler chickens. On the day of hatch, 600 male Ross 308 chicks were weighed and randomly assigned to 12 treatments, with five cages of 10 birds each. A 6 × 2 factorial arrangement was applied, consisting of 0.20%, 0.25%, 0.30%, 0.35%, 0.40%, or 0.45% NPP and 0 or 5 μg/kg of 1a-OH-D3. The basal diet contained 0.52% calcium (Ca) and was not supplemented with vitamin D3. Dietary NPP levels significantly affected growth performance and tibia mineralization (except width) of broilers; by contrast, meat yield and organ relative weight were not influenced...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Non-phytate phosphorus; 1a-hydroxycholecalciferol; Growth; Bone; Broiler chicken.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400503

Evaluation of the Effect of Bacillus Subtilis and Pediococcus Acidilactici Mix on Serum Biochemistry, Growth Promotation of Body and Visceral Organs in Lohmann Brown Chicks
Provedor de dados: 89
Autores: Yu,W; Hao,X; Zhiyue,W; Haiming,Y; Lei,X.
ABSTRACT Recently the use of antibiotic growth promoter (AGPs) in poultry feed is banned in China, leading to the increasing demand for AGPs substitutes. Probiotics have been considered as a potential substitute. The purpose of this study was to evaluate the effects of probiotic on serum biochemistry, and growth promotion of body weight and visceral organs and in Lohmann Brown chicks aged 0 to 9 weeks. Five hundred and forty 1-day-old male chicks were randomly divided into three groups, with six replicates and 30 chicks in each replicate. The experiment was carried out over 70 days. Dietary treatments were: (1) basal diet alone (control group); (2) basal diet containing 0.1% probiotics (probiotic group); and (3) basal diet containing 0.01% zinc bacitracin...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Probiotic; Bacillus subtilis; Pediococcus acidilactici; Chick; Growth performance; Serum biochemical variables.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000300304

Soybean root growth and crop yield in reponse to liming at the beginning of a no-tillage system
Provedor de dados: 90
Autores: Bortoluzzi,Edson Campanhola; Parize,Guilherme Luis; Korchagin,Jackson; Silva,Vanderlei Rodrigues da; Rheinheimer,Danilo dos Santos; Kaminski,João.
Analyzing the soil near crop roots may reveal limitations to growth and yield even in a no-tillage system. The purpose of the present study was to relate the chemical and physical properties of soil under a no-tillage system to soybean root growth and plant yield after five years of use of different types of limestone and forms of application. A clayey Oxisol received application of dolomitic and calcitic limestones and their 1:1 combination in two forms: surface application, maintained on the soil surface; and incorporated, applied on the surface and incorporated mechanically. Soil physical properties (resistance to mechanical penetration, soil bulk density and soil aggregation), soil chemical properties (pH, exchangeable cations, H+Al, and cation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dolomitic limestone; Calcitic limestone; Soil physical resilience; Cone index.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000100026

Leaf area of common bean genotypes during early pod filling as related to plant adaptation to limited phosphorus supply
Provedor de dados: 90
Autores: Trindade,Roberto Santos; Araújo,Adelson Paulo; Teixeira,Marcelo Grandi.
Low phosphorus supply markedly limits leaf growth and genotypes able to maintain adequate leaf area at low P could adapt better to limited-P conditions. This work aimed to investigate the relationship between leaf area production of common bean (Phaseolus vulgaris) genotypes during early pod filling and plant adaptation to limited P supply. Twenty-four genotypes, comprised of the four growth habits in the species and two weedy accessions, were grown at two P level applied to the soil (20 and 80 mg kg-1) in 4 kg pots and harvested at two growth stages (pod setting and early pod filling). High P level markedly increased the leaf number and leaf size (leaf area per leaf), slightly increased specific leaf area but did not affect the net assimilation rate. At...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genetic variability; Growth habit; Phaseolus vulgaris; Phosphorus efficiency; Plant growth analysis.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000100012

Seeds with high molybdenum concentration improved growth and nitrogen acquisition of rhizobium-inoculated and nitrogen-fertilized common bean plants
Provedor de dados: 90
Autores: Almeida,Fernanda Fátima Delgado; Araújo,Adelson Paulo; Alves,Bruno José Rodrigues.
Seeds of common bean (Phaseolus vulgaris) with high molybdenum (Mo) concentration can supply Mo plant demands, but to date no studies have concomitantly evaluated the effects of Mo-enriched seeds on plants inoculated with rhizobia or treated with N fertilizer. This work evaluated the effects of seed Mo on growth and N acquisition of bean plants fertilized either by symbiotic N or mineral N, by measuring the activities of nitrogenase and nitrate reductase and the contribution of biological N2 fixation at different growth stages. Seeds enriched or not with Mo were sown with two N sources (inoculated with rhizobia or fertilized with N), in pots with 10 kg of soil. In experiment 1, an additional treatment consisted of Mo-enriched seeds with Mo applied to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Nodulation; Biological N2 fixation; 15N isotope dilution; Ontogeny.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000200008

Productive traits of rye cultivars grown under different sowing seasons
Provedor de dados: 91
Autores: Kleinpaul,Jéssica A.; Cargnelutti Filho,Alberto; Carini,Fernanda; Pezzini,Rafael V.; Chaves,Gabriela G.; Thomasi,Rosana M.
ABSTRACT This study aimed to adjust the Gompertz and Logistic nonlinear models for the fresh and dry matter of aerial part and indicate the model that best describes the growth of two rye cultivars in five sowing seasons, as well as to characterize the growth of the cultivars regarding the fresh and dry matter of aerial part. Ten uniformity trials were conducted with the rye crop in 2016. A weekly sampling and evaluation of 10 plants per trial was performed from the time the plants presented one expanded leaf. For each plant, the fresh and dry matter of aerial part were weighed. The Gompertz and Logistic models were adjusted to the accumulated thermal time based on the measures of each trait in each assessment. Also the parameters a, b, and c for each...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Secale cereale; Growth models; Nonlinear models; Soil cover plant.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019001200937

Application of brassinosteroid to Tabebuia alba (Bignoniaceae) plants
Provedor de dados: 93
Autores: ONO,ELIZABETH ORIKA; NAKAMURA,TERUKO; MACHADO,SÍLVIA RODRIGUES; RODRIGUES,JOÃO DOMINGOS.
The objective of this study was to observe the effects of brassinosteroid, gibberelin, and auxin application on the development and foliar anatomy of Tabebuia alba (Cham.) Sandw. seedlings. T. alba seedlings were grown in plastic bags with fertilized soil and treated with the following: 1- water (control); 2- brassinolide (BR1) 0.104 mM; 3- BR1 0.208 mM; 4- 3-indoleacetic acid (IAA) 0.2854 mM; 5- IAA 0.5708 mM; 6- GA3 (gibberellin A3) 0.1443 mM; 7- GA3 0.2887 mM; 8- GA3 0.072 mM + IAA 0.1427 mM; 9- GA3 0.1443 mM + IAA 0.2854 mM; 10- GA3 0.072 mM + BR1 0.052 mM; and 11- GA3 0.1443 mM + BR1 0.104 mM. Plant height and petiole length were measured before the treatments and 21 days after application of the growth regulators. These data allowed the calculation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tabebuia alba L.; Brassinosteroids; GA3; Auxin; Growth.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-31312000000300002

Evaluation of the critical points of the most adequate nonlinear model in adjusting growth data of ‘green dwarf’ coconut fruits
Provedor de dados: 94
Autores: Silva,Édipo Menezes da; Fruhauf,Ariana Campos; Silva,Edilson Marcelino; Muniz,Joel Augusto; Fernandes,Tales Jesus; Silva,Victor Ferreira da.
Abstract  ‘Green Dwarf’ coconut is a fruit of great economic interest, since all its components are used, in addition to water, its main component. It is a culture of humid tropics, widely produced in northeastern Brazil, being an important income source for the region. The phenology study of this type of fruit is extremely important, but there are few studies in literature. Regression models, especially nonlinear growth models, can be of great value to understand how fruit growth behaves. The scarcity of works of this nature may be linked to some difficulties in estimating parameters of nonlinear models, such as assigning initial values to the itterative process. Overcoming this difficulty, for regression analysis, linear or not, several steps need to be...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Regression analysis; Selection of models; Goodness fit; Sigmoid; Fruit development.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452021000100503

Postweaning growth of the non-carcass components of Texel crossbred lambs
Provedor de dados: 96
Autores: Galvani,Diego Barcelos; Pires,Cleber Cassol; Wommer,Tatiana Pfüller; Oliveira,Franciele de; Kodayssi,Georges Petrarca Teixeira; Griebler,Letieri.
Twenty 11/16 Texel x 5/16 Ile de France crossbred lambs were slaughtered at different body weights to evaluate the growth of their non-carcass components. Animals were weaned at 42 days of age (15.9 ± 2.1 kg of body weight), housed in individual stalls, and fed ad libitum. After ten days of an experimental adaptation period, 5 lambs were slaughtered. The remaining lambs were randomly assigned to one of three following slaughter weights: 25, 30 or 35 kg of body weight at fast. At slaughter, all body components were individually weighed and expressed as percentage of the empty body weight. To determine allometric growth of individual components, the exponential equation Y = aXb was logarithmically transformed and used. Proportions of feet and head decreased,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometry gastrointestinal tract intestines; Organs sheep viscera.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000700023

Residual feed intake and relationships with performance of Nellore cattle selected for post weaning weight
Provedor de dados: 96
Autores: Lucila Sobrinho,T.; Branco,R.H.; Bonilha,S.F.M.; Castilhos,A.M.; Figueiredo,L.A.; Razook,A.G.; Mercadante,M.E.Z.
The objective of this work was to evaluate performance, efficiency parameters and phenotypic correlations among measurements of energy efficiency of Nellore cattle selected for post weaning weight and classified according to residual feed intake, calculated by the difference between observed and predicted intake, based on average metabolic body weight and average daily gain. Thus, animals were classified within three groups: high (&amp;gt; mean + 0.5 standard deviation, less efficient); medium (±0.5 standard deviation of the mean); and low (&lt; mean - 0.5 standard deviation, more efficient) residual feed intake. No differences were observed at initial and final body weights, average daily gain and dry matter intake among groups. Animals with low residual...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beef cattle; Efficiency parameters; Selection.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000400030

Weight and morphometric growth of different strains of tilapia (Oreochromis sp)
Provedor de dados: 96
Autores: Allaman,Ivan Bezerra; Reis Neto,Rafael Vilhena; Freitas,Rilke Tadeu Fonseca de; Freato,Thiago Archangelo; Lago,Aline de Assis; Costa,Adriano Carvalho; Lima,Renato Ribeiro de.
The objective of this study was to evaluate the morphometric growth and weight gain of strains of tilapia (Thai, Red, UFLA and Commercial) by nonlinear models. Initially, 500 male fingerlings of each strain, at 85 (Red and UFLA) and 86 (Thai and Commercial) days of age, were stocked separately in raceways with 56 m³. Twenty fish of each strain were randomly sampled, weighed and measured monthly. Five nonlinear models (Brody, von Bertalanffy, Gompertz, logistic and exponential) were tested, choosing one that best fit to the data. The variables studied were: weight, standard length (SL), head length (HL), height 1 (H1), height 2 (H2), height 3 (H3), first distance (D1), second distance (D2), first width (W1), second width (W2) and third width (W3). The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Absolute growth rate; Aquaculture; Nonlinear models; Relative growth rate.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000500001

Tree-ring growth patterns and temperature reconstruction from Nothofagus pumilio (Fagaceae) forests at the upper tree line of southern Chilean Patagonia
Provedor de dados: 97
Autores: ARAVENA,JUAN C.; LARA,ANTONIO; WOLODARSKY-FRANKE,ALEXIA; VILLALBA,RICARDO; CUQ,EMILIO.
Nothofagus pumilio (Poepp. et Endl. Krasser) is a deciduous species that dominates the upper tree line of the Chilean and Argentinean Andes between 35º 36' and 55º 31' S. In this study we describe the development of 21 tree-ring width chronologies of N. pumilio across its southernmost range of distribution (51-55º S) in Chile, and analyze the relationship between N. pumilio tree-growth and climate. Ten of the tree-ring chronologies in our study, show an increasing trend and/or above average tree-ring growth since ca. 1960 to 1996, which coincides with the increase in temperatures shown by instrumental records from southern Patagonia. Another dominant pattern in tree-growth is a remarkable ca. 7-year cycle present in three of the study sites from Isla...
Tipo: Journal article
Palavras-chave: Dendroclimatology Nothofagus; Tree-rings tree line Patagonia warming trend.
Ano: 2002
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2002000200008

Morphogenic responses of the roots of Arabidopsis thaliana (Magnoliophyta: Brassicales) to Cr(VI) stress
Provedor de dados: 97
Autores: MARTÍNEZ-TRUJILLO,MIGUEL; SOLÍS-GUZMÁN,GLORIA; JIMÉNEZ-SARAGOZ,JUAN CARLOS; LÓPEZ-HERNÁNDEZ,DOMINGO; CARREÓN-ABUD,YAZMÍN; RÍOS-CHÁVEZ,PATRICIA.
The growth response of roots to stress conditions is a strategy that allows the plant to either avoid the adverse conditions or to adapt to them. H an activities have resulted in the accumulation of some metals from certain concentrations have an adverse effect on plant growth. Among these, Chromiumumm (Cr) is a serious pollution caused by metal processing industries and leather tanning. To understand in detail the response of roots Cr(VI) stress, it was used an in vitro system with Arabidopsis thaliana utilizing three experimental conditions. (A) Plants germinated and grown for 6 days, without lateral roots, were transferred to media with different concentrations of Cr(VI). This allowed the evaluation as affecting the growth of the primary root to move...
Tipo: Journal article
Palavras-chave: Chromiumum; Development; Plant; Root.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2013000200009

Artificial light and growth regulators on the in vitro etiolation of Cattleya labiata
Provedor de dados: 124
Autores: Rodrigues,Antonio Anderson de Jesus; Santos,Eder de Oliveira; Takane,Roberto Jun; Carvalho,Ana Cristina Portugal Pinto de.
ABSTRACT The technique of etiolation is widely used in the micropropagation of various plant species. The aim of this study was to evaluate growth and development in shoots of Cattleya labiata grown in vitro, as a function of growth regulators and the presence and absence of light. Stem segments, approximately ± 1.0 cm in height, were inoculated in test tubes containing 15.0 mL of MS culture medium supplemented with different concentrations of BAP (0.0, 2.0 and 4.0 mg L-1) and NAA (0.0, 1.0 and 2.0 mg L-1), and in different growth environments (growth room, darkness and a photoperiod of 16 hours) in a completely randomised design. At 150 days, the following were evaluated: a) number of etiolated shoots; b) number of nodes per etiolated shoot; c) length of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Orchidaceae; Tissue culture; Photoperiod; 6-benzylaminupurine; Naphthaleneacetic acid.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000200296

Accumulation of salts in the soil and growth of cowpea under salinity and phosphorus fertilization
Provedor de dados: 124
Autores: Lima,Yuri Bezerra de; Sá,Francisco Vanies da Silva; Ferreira Neto,Miguel; Paiva,Emanoela Pereira de; Gheyi,Hans Raj.
ABSTRACT Cowpea is widely grown in the Brazilian semiarid region, however, due to excess salts in the soil and irrigation water constantly low crop productivity has been observed. Accumulation of salts in the soil, growth and biomass partition of cowpea under salt stress and phosphorus fertilization was evaluated in this study. The assay was conducted in a greenhouse in Mossoró, State of Rio Grande do Norte, Brazil, from September to December 2015, using a Alfissol Latosolic with low phosphorus content. The experiment was carried out in a randomized block design in a factorial 5 x 3 arrangement, consisting of five water salinity levels (0.5, 1.5, 2.5, 3.5 and 4.5 dS m-1) and three doses of superphosphate (60, 100 and 140% of the recommended dose for crop -...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vigna unguiculata; Soil fertility; Irrigation; Growth analysis; Saturation extract.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000500765

Growth rates and yields of cassava at different planting dates in a tropical savanna climate
Provedor de dados: 63
Autores: Phoncharoen,Phanupong; Banterng,Poramate; Vorasoot,Nimitr; Jogloy,Sanun; Theerakulpisut,Piyada; Hoogenboom,Gerrit.
ABSTRACT: Details on growth and yield for cassava planted on different dates are useful for determining suitable genotypes for particular growing seasons. Our aim was to study growth and yield of cassava planted on different dates. Four cassava genotypes (Kasetsart 50, Rayong 9, Rayong 11 and CMR38-125-77) were evaluated using a randomized complete block design (RCBD) with four replications in six growing periods (20 Apr, 25 May, 30 June, 5 Oct, 10 Nov and 15 Dec 2015-2016) at Khon Kaen, Thailand. Soil properties were determined prior to planting, and crop traits and weather data were recorded. The six planting dates had a statistically significant effect on all crop traits. Low temperatures and solar radiation related to low biomass accumulation rates and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Climatic factors; Environment; Growth analysis; Growing date.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001500376

Efficiency of garden waste compost teas on tomato growth and its suppressiveness against soilborne pathogens
Provedor de dados: 63
Autores: Morales-Corts,María Remedios; Pérez-Sánchez,Rodrigo; Gómez-Sánchez,María Ángeles.
ABSTRACT: The use of compost teas is of great interest to sustainable agriculture. Aerated compost tea (ACT) and aerated vermicompost tea (AVT) originating from garden waste have been analytically characterized and tested in vitro and in vivo on tomato plants to determine their suppressive effect on Rhizoctonia solani and Fusarium oxysporum f. sp. lycopersici. The nitrogen (N, 3840 ppm) and potassium superoxide (K2O, 5800 ppm) contents were relevant in ACT. Both ACT and AVT were shown to contain indoleacetic acid IAA (80 - 20 mg L−1), salicylic acid (5.85 - 1.33 ng L−1) and humic acids (190 - 140 mg L−1). Direct confrontation assays against the pathogens showed that ACT had a high suppressive effect on F. oxysporum f. sp. lycopersici (relative growth of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum lycopersicum; Compost and vermicompost; Growth effect; Sustainable agriculture.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000500400

Genome association study through nonlinear mixed models revealed new candidate genes for pig growth curves
Provedor de dados: 63
Autores: Silva,Fabyano Fonseca e; Zambrano,Maria Fernanda Betancur; Varona,Luis; Glória,Leonardo Siqueira; Lopes,Paulo Sávio; Silva,Marcos Vinícius Gualberto Barbosa; Arbex,Wagner; Lázaro,Sirlene Fernandes; Resende,Marcos Deon Vilela de; Guimarães,Simone Eliza Facioni.
ABSTRACT: Genome association analyses have been successful in identifying quantitative trait loci (QTLs) for pig body weights measured at a single age. However, when considering the whole weight trajectories over time in the context of genome association analyses, it is important to look at the markers that affect growth curve parameters. The easiest way to consider them is via the two-step method, in which the growth curve parameters and marker effects are estimated separately, thereby resulting in a reduction of the statistical power and the precision of estimates. One efficient solution is to adopt nonlinear mixed models (NMM), which enables a joint modeling of the individual growth curves and marker effects. Our aim was to propose a genome association...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: SNP markers; Body weight; Longitudinal data.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000100001

Performance of juvenile turbot (Scophthalmus maximus) fed varying dietary L-carnitine levels at different stocking densities
Provedor de dados: 63
Autores: Gonçalves,José Fernando Magalhães; Turini,Bruno Graziano da Silva; Ozório,Rodrigo Otávio de Almeida.
Commercial farming of turbot (Scophthalmus maximus) at high stocking densities may lead to growth depression and increasing production costs. Moreover, the high levels of accumulated waste in an intensive system may cause rapid deterioration of water quality, which may undermine the production. L-carnitine is known as a growth-enhancer which shows promise as mitigator of crowding effects. The effects of stocking densities (4, 8, 11 and 14 kg m²) on growth performance, feed utilization and body composition were evaluated during 75 days on turbot (75.6 ± 2.8 g) fed two dietary L-carnitine levels (40 or 240 mg kg¹). At the end of the feeding trial, total ammonia excretion (TAN) was measured postprandially for 24h. Specific growth rate and weight gain...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Compensatory growth; Feed additives; Stress; Husbandry; Nitrogen excretion.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000200004

วิกฤติโลกร้อนกับการวิจัยและพัฒนาพันธุ์ข้าวสาลี
Provedor de dados: 106
Autores: Nongnuch Pradit.
Crisis of Global Warming resulting in climate change seriously and have an impact on the production of cereals, especially wheat, a crop that requires low temperatures for growth. The growth arrest and lower productivity. Meteorological data of Thailand to global warming as well. The temperature rise and the overall decrease in rainfall. Effects of climate change has extended to include wheat varieties research and development in Rice research in the Upper North and the Northeast in Thailand, the region has the potential to grow wheat and research and development of such a long time. We found that wheat has been the impact of climate change with temperature higher than the optimum temperature for growth. It halts wheat growth, acceleration of growth and...
Tipo: PhysicalObject
Palavras-chave: Wheat; Global warming; Climate change; Growth; Productivity; ข้าวสาลี; ภาวะโลกร้อน; การเปลี่ยนแปลงสภาพภูมิอากาศ; การพัฒนาพันธุ์; การเจริญเติบโต; ผลผลิต.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5620

Evaluation of grain sorghum hybrids for aluminum tolerance in nutrient solution
Provedor de dados: 1
Autores: Menezes, Cicero Beserra de; Lima, Geisiane Matos; Marucci, Rosangela Cristina; Bernardino, Karine Costa; Santos, Crislene Vieira dos; Julio, Marcos Paulo Mingote; Schaffert, Robert Eugene.
 Sorghum (Sorghum bicolor L. Moench) is one of the most important cereal crops in the world. In Brazil, the acreage of grain sorghum during off-season is quite expansive. Most of this area is the Cerrado, a Brazilian biome that is similar to a Savannah and is characterized by high acidity and soluble aluminum at toxic levels for plants. The aluminum acts as a limiting factor in achieving high yields. The purpose of this work was to phenotype sorghum hybrids for aluminum tolerance. Eighteen hybrids were evaluated in a nutrient solution containing {0} or {27} µM Al3+. The work was carried out in a growth chamber at the Embrapa Maize and Sorghum, from April 4 to May 30, 2014. The lines ATF 13B (susceptible) and ATF 14B (tolerant) were used as check cultivars....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sorghum bicolor; Abiotic stress; Soil acidity; Plant breeding.; Melhoramento Vegetal.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/35304

Evaluation of grain sorghum hybrids for aluminum tolerance in nutrient solution
Provedor de dados: 1
Autores: Menezes, Cicero Beserra de; Lima, Geisiane Matos; Marucci, Rosangela Cristina; Bernardino, Karine Costa; Santos, Crislene Vieira dos; Julio, Marcos Paulo Mingote; Schaffert, Robert Eugene.
 Sorghum (Sorghum bicolor L. Moench) is one of the most important cereal crops in the world. In Brazil, the acreage of grain sorghum during off-season is quite expansive. Most of this area is the Cerrado, a Brazilian biome that is similar to a Savannah and is characterized by high acidity and soluble aluminum at toxic levels for plants. The aluminum acts as a limiting factor in achieving high yields. The purpose of this work was to phenotype sorghum hybrids for aluminum tolerance. Eighteen hybrids were evaluated in a nutrient solution containing {0} or {27} µM Al3+. The work was carried out in a growth chamber at the Embrapa Maize and Sorghum, from April 4 to May 30, 2014. The lines ATF 13B (susceptible) and ATF 14B (tolerant) were used as check cultivars....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.01.03.05-9 Sorghum bicolor; Abiotic stress; Soil acidity; Plant breeding. Melhoramento Vegetal.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/35304

Allometry in carcasses of lambs of the Pantaneiro genetic group slaughtered with different subcutaneous fat thickness
Provedor de dados: 2
Autores: Mora, Natália Holtz Alves Pedroso; Macedo, Francisco de Assis Fonseca de; Osório, José Carlos Silveira; Martins, Elias Nunes; Mexia, Alexandre Agostinho; Macedo, Thiago Gomes de.
Twenty-four female lambs of the Pantaneiro genetic group, with approximately 100 days of age, average body of 16.24 ± 1.78 kg, were slaughtered with 2.0, 3.0 and 4.0 mmof subcutaneous fat thickness, measured by ultrasound in the Longissimus, to evaluate the allometric growth. Lambs fed a complete pelleted diet calculated to ensure a daily weight gain of0.30 kg. Slaughtering was performed as the female lambs reached the pre-established fat thickness. After 24 hours in a cold chamber at 4ºC, chilled carcasses were cut in half and weighed. The right side was separated into five sections to determine the allometry of carcasses and cuts. Neck and rib showed isogonic growth in all treatments. Loin has remained late growth to 2.0 and3.0 mm. Shoulder and leg were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.05.00-4 growth; Females; Sheep; Loin; Shoulder; Leg.
Ano: 2014
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/23526

Evaluation of using Moringa oleifera on controlling weeds. i. Effect of leaf and seed water extracts of Moringa oleifera on broad and grassy weed associated narcissus tazetta L.
Provedor de dados: 111
Autores: El-Rokiek, Kowthar Gad.
     Abstract: This study was conducted to evaluate the effect of leaf and seed water extracts of Moringa oleifera at different concentrations (0, 1.25, 2.5 and 5%)   on the growth and flowering of Narcissus tazetta L as well as the growth of associated weeds. This study was achieved under greenhouse conditions at the National Research Center, Egypt, in the two winter seasons of the years 2014/2015 and 2015/2016. Leaf and seeds water extract of Moringa oleifera reduced the growth of both Beta vulgaris (broad weed) and Phalaris minor (grassy weed) as compared to the control. On the other hand, fresh and dry weights of leaves of Narcissus tazetta L., bulbs as well as flowering increased significantly by leaf and seed water extract over untreated control....
Tipo: Info:eu-repo/semantics/article
Ano: 2018
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4381

Population dynamics of  Rimapenaeus constrictus (Stimpson, 1874) (Penaeoidea) on the southeastern Brazilian coast: implications for shrimp fishing management from a 5-year study on a bycatch species
Provedor de dados: 42
Autores: LOPES,ANA ELISA B.; GRABOWSKI,RAPHAEL C.; GARCIA,JOYCE R.; FRANSOZO,ADILSON; COSTA,ROGÉRIO C. DA; HIROKI,KÁTIA A.N.; CASTILHO,ANTONIO L.
ABSTRACT This is the first study to evaluate in broad spatiotemporal scales the growth parameters and population structure of Rimapenaeus constrictus, a barely damaged species composing the bycatch from shrimp fishing in the Western Atlantic. The abundance and size-class frequency distribution, growth, longevity and sex ratio were evaluated from monthly samples obtained in the northern littoral of São Paulo state from Jan/1998 to Jun/2003. We measured 5,812 individuals in which the sex ratio was skewed toward females; this was more evident in size classes greater than 10 mm in CL (carapace length) (binomial test, p&lt;0.05). We selected 16 growth cohorts of females, and 8 of males, the majority consisting of younger individual cohorts excluded from the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fisheries biology; Latitudinal variation; Recruitment cohorts; Roughneck shrimp; Stock conservation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301013

Influence of feeding differentiation on the age at onset of puberty in Brazilian Bergamasca dairy ewe lambs
Provedor de dados: 45
Autores: Dantas,A.; Siqueira,E.R.; Fernandes,S.; Oba,E.; Castilho,A.M.; Meirelles,P.R.L.; Sartori,M.M.P.; Santos,P.T.R.
The objective of the study was to evaluate body growth and age at onset of puberty on lambs fed two specific diets for low and high growth rates. A herd of 20 Brazilian Bergamasca lambs was divided in two groups (n= 10) and kept confined throughout the experimental period, two animals of the same treatment/pen. Two phases were established: Phase 1, from 90 days of age until the onset of puberty; and Phase 2, from puberty onset up to 1 year old. For Phase 1, two distinct diets were formulated, being: Treatment A, which was formulated to obtain an average daily gain of approximately 150g; and Treatment B, for an average daily gain of about 250g. In Phase 2, a balanced, equal diet was provided to both groups. Every 14 days, the animals were weighed and given...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nutrition; Performance; Reproduction; Growth hormone; Sheep.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000100022

Productive response of hair ewes crossed with Damara and Dorper and growth of their lambs
Provedor de dados: 45
Autores: Salinas-Rios,T.; Ramírez-Godínez,J.A.; Rodríguez-Almeida,F.A.; Hernández-Bautista,J.; Torres-Salado,N.; Herrera-Pérez,J.
ABSTRACT Profitability of sheep production depends on the reproductive response of ewes and growth of their lambs, which can be improved through the ram genotype. The aim of this study was to evaluate the reproductive response of Blackbelly (Bb), Pelibuey (Pb), Katahdin (Kat) and Dorper (Dor) ewes crossed with Damara (Dam) and Dor rams and the growth of their offspring. To measure percentage of single and multiple lambings (MLP), 234 Bb, Pb, Kat and Dor ewes were used. To measure lamb growth, the offspring of 86 Bb x Pb (BbPb) ewes and 73 Kat x Dor (KatDOR) ewes were used. Four Dor x BbPb, six Dam x BbPb and six Dam x KatDor lambs were slaughtered for carcass assessment. MLP was analyzed with the CATMOD procedure considering the factors age and breed. Lamb...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lambs; Breeding; Weaning; Ewes; Lambing.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200429

Growth differentiation factor 9 and bone morphogenetic protein 15 expression in previtellogenic oocytes and during early embryonic development of Yellow-tail Kingfish Seriola lalandi
Provedor de dados: 48
Autores: Palomino,Jaime; Herrera,Giannina; Dettleff,Phillip; Martínez,Víctor.
BACKGROUND: During fish oocyte maturation, specific molecules are expressed and accumulated within oocyte until fertilization and embryo development. Special attention have been paid in members of the transforming growth factor (TGF-&amp;#946;) superfamily; growth differentiation factor 9 (GDF9/gdf9) and bone morphogenetic protein 15 (BMP15/bmp15), which exert regulatory functions during oocyte maturation and follicle development. However, little attention has been paid to the involvement of these molecules during embryogenesis considering its importance for the formation of a good quality egg and subsequent embryo survival. The purpose of this study was to analyze the expression of gdf9 andbmp15 in previtellogenic oocytes and during early embryonic...
Tipo: Journal article
Palavras-chave: Gdf9; Bmp15; Embryo development; Oocyte maturation; Fish.
Ano: 2014
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602014000100054

Screening the antifungal activity of essential oils against decay fungi from palmyrah leaf handicrafts
Provedor de dados: 48
Autores: Mahilrajan,Subajini; Nandakumar,Jeyarani; Kailayalingam,Robika; Manoharan,Nilushiny Aloysius; SriVijeindran,SriThayalan.
BACKGROUND: The whitish tender leaves of Palmyrah are used for making handicrafts. The problem with these articles is discolouration with time and become more brittle due to fungal attack. This could be prevented by some protective coating. Instead of expensive and harmful chemicals we decided to test natural plant essential oils to control fungal attack. Palmyrah leaf article decay fungi were isolated from two different sites of Jaffna peninsula. In this investigation Antifungal Activity of different plant essential oils from neem (Azadirachta indica), castor (Ricinus communis), citronella (Cymbopogon sp) and camphor (Cinnamomum camphora) obtained from local market have been evaluated against isolated fungi. For screening of Antifungal activity, tests and...
Tipo: Journal article
Palavras-chave: Essential oil; Growth inhibition; Minimal inhibitory concentration and Palmyrah leaf.
Ano: 2014
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602014000100035

Growth curve of free-ranging Trichechus inunguis
Provedor de dados: 49
Autores: Vergara-Parente,Jociery Einhardt; Parente,Cristiano Leite; Marmontel,Miriam; Silva,Jean Carlos Ramos; Sá,Fabrício Bezerra.
The objective of this work was to describe growth curves for free-ranging Amazonian manatees in Brazil. Data analyzed included age estimates and biometrics from 60 Amazonian manatees (33 males and 27 females) captured between 1993 and 2006 by local residents of the mid-Solimões and Pirativa Rivers, in Amazonia, and collected by the Instituto de Desenvolvimento Sustentável Mamirauá and Centro Nacional de Conservação e Manejo de Mamíferos Aquáticos/ICMBio. The non-linear mathematical model used to analyze the data was the von Bertalanffy's equation; two growth curves were calculated, one for males L(t)male = 299.4[1-e-0.0897507(t+6.55696)], and one for females L(t)female = 256.1[1-e-0.23731(t+ 3.01921)]. Based on these equations, length at birth for the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonian manatee; Age estimate; Von Bertalanffy; Sirenians.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032010000300009

Effect of temperature on growth of the threatened annual fish Austrolebias nigrofasciatus Costa &amp;amp; Cheffe 2001
Provedor de dados: 49
Autores: Volcan,Matheus Vieira; Fonseca,Alinca Peres da; Figueiredo,Mário Roberto Chim; Sampaio,Luís André; Robaldo,Ricardo Berteaux.
This study evaluated the effect of temperature on growth of Austrolebias nigrofasciatus, an endemic and threatened annual killifish species of the Patos-Mirim lagoon system in Southern Brazil. In order to verify the effect of temperature on initial growth of A. nigrofasciatus, eggs stored in the laboratory were hatched and juveniles reared for eight weeks at 16 and 22 ºC. The standard length of newly hatched fishes was 4.67 ± 0.25 mm and after eight weeks they reached 23.68 ± 3.73 and 22.68 ± 5.36 mm, respectively at 16 and 22 ºC. However, initial growth of fish reared at 22 ºC was faster and they reached sexual dimorphism at an earlier age compared to those reared at 16 ºC. Final length of females reared at 22 ºC was 23.00 ± 2.83 mm, they were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Annual fish; Laboratory conditions; Cyprinodontiformes; Rivulidae.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000400007

Somatic growth rates of the Hawksbill Turtle, Eretmochelys imbricata, in Gorgona Natural National Park, Colombia, between 2004 and 2018
Provedor de dados: 50
Autores: Cañas-Uribe,Mariana; Payán,Luis F.; Amorocho,Diego F.; Páez,Vivian P.
ABSTRACT The Hawksbill Turtle, Eretmochelys imbricata, is globally assessed as Critically Endangered, and information in the Eastern Pacific Ocean is limited. For this reason, this investigation evaluated the somatic growth rates in an immature hawksbill sea turtle aggregation using capture-mark-recapture on the coral reefs at Playa Blanca and La Azufrada in the Gorgona Natural National Park, Colombia. Between 2004 and 2018, we made 89 captures of 49 hawksbill individuals. The mean curved carapace length (CCL) obtained was 41.6 cm (range 32-58 cm), and the mean straight-line carapace length (SCL) was 39.1 cm (range 30.0-54.1 cm), showing these reefs to be critical foraging grounds for immature individuals. The mean body condition index was 1.3 (range...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sea turtle; Cheloniidae; Tropical Eastern Pacific; Body condition index; Foraging areas.
Ano: 2020
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612020000300013

Source-sink relationships in two soybean cultivars with indeterminate growth under water deficit
Provedor de dados: 53
Autores: Silva,Alexandre José da; Magalhães Filho,José Rodrigues; Sales,Cristina Rodrigues Gabriel; Pires,Regina Célia de Matos; Machado,Eduardo Caruso.
Abstract Water deficit is a major factor limiting crop yield in rainfed areas. We hypothesized that under water deficit the decrease of photosynthetic production stimulates: carbohydrate remobilization from leaves, stems and roots to reproductive organs; and decreasing flowering intensity and pod development. The present work aims to study the effect of water deficit during bloom and grain pod-filling stages in two indeterminate soybean cultivar, Vtop and Nidera. The following physiological parameters were evaluated by means of daily CO2 assimilation rate (Ai), dynamic of carbohydrates in tissues, plant growth, grain yield and yield components. The study was conducted in a greenhouse with plants sown in tanks of 0.5 m3. Regardless of the phenological...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max L. Merrill; Photosynthesis; Carbohydrate; Pod growth; Seed growth.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000100023

Co-transfection of hepatocyte growth factor and truncated TGF-β type II receptor inhibit scar formation
Provedor de dados: 56
Autores: Xu,Ji-Hua; Zhao,Wan-Yi; Fang,Qing-Qing; Wang,Xiao-Feng; Zhang,Ding-Ding; Hu,Yan-Yan; Zheng,Bin; Tan,Wei-Qiang.
Wound scarring remains a major challenge for plastic surgeons. Transforming growth factor (TGF)-β plays a key role in the process of scar formation. Previous studies have demonstrated that truncated TGF-β type II receptor (t-TGF-βRII) is unable to continue signal transduction but is still capable of binding to TGF-β, thereby blocking the TGF-β signaling pathway. Hepatocyte growth factor (HGF) is a multifunctional growth factor that promotes tissue regeneration and wound healing. Theoretically, the combination of HGF and t-TGF-βRII would be expected to exert a synergistic effect on promoting wound healing and reducing collagen formation. In the present study, lentivirus-mediated transfection of the two genes (t-TGF-βRII/HGF) into fibroblasts in vitro and in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Wound healing; Truncated transforming growth factor-β type II receptor; Hepatocyte growth factor; Scar; Rat; Lentivirus.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2020000100611

An evaluation and partial characterization of a bacteriocin produced by Lactococcus lactis subsp lactis ST1 isolated from goat milk
Provedor de dados: 58
Autores: Taheri,Parinaz; Samadi,Nasrin; Ehsani,Mohammad Reza; Khoshayand,Mohammad Reza; Jamalifar,Hossein.
A bacteriocin-like inhibitory substance producing Lactococcus lactis subsp lactis strain, ST1, isolated from goat milk of Iranian origin and with broad spectrum of activity and desirable technical properties was used for evaluating some futures of bacteriocin inhibitory activity. Cell growth and bacteriocin production studies were carried out in MRS medium incubated statically under uncontrolled pH condition. The antibacterial activity presented a primary metabolite pattern and showed a rapid decrease at the stationary phase. Microaerobiosis and capnophily growth conditions resulted in higher bacteriocin production while aerobiosis showed negative effect on both cell growth and bacteriocin production. Bacteriocin production, on the other hand, was favored...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactococcus lactis subsp lactis ST1; Bacteriocin production; Environmental factors; Bacteriocin release; Ultrasound shock.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000400029

Different resistance patterns of reference and field strains of Brucella abortus
Provedor de dados: 58
Autores: Miranda,Karina L.; Dorneles,Elaine M. S.; Poester,Fernando P.; Martins Filho,Paulo S.; Pauletti,Rebeca B.; Lage,Andrey P.
The aim of this study was to evaluate the growth of the B. abortus reference strains and field isolates on media containing different inhibitor agents. Reference strains were seeded on tryptose agar containing: i-erythritol (1.0 mg/mL), fuchsin (20 μg/mL and 80 μg/mL), thionin (2.5 μg/mL and 10 μg/mL), rifampicin (200 μg/mL) and safranin O (200 μg/mL). Field isolates were tested only on media containing i-erythritol, rifampicin and thionin. Furthermore, each suspension was also inoculated on tryptose agar incubated in air, to test its ability to grow without CO2. Sensitivity to fuchsin was similar among reference strains evaluated. Growth of S19, 544 and 2308 but not RB51 were inhibited on media containing rifampicin. Medium with safranin O showed no...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: B. abortus; Thionin; I-erythritol; Rifampicin.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000100265

Colonization and plant growth promoting characterization of endophytic Pseudomonas chlororaphis strain Zong1 isolated from Sophora alopecuroides root nodules
Provedor de dados: 58
Autores: Zhao,Long Fei; Xu,Ya Jun; Ma,Zhan Qiang; Deng,Zhen Shan; Shan,Chang Juan; Wei,Ge Hong.
The endophytic strain Zong1 isolated from root nodules of the legume Sophora alopecuroides was characterized by conducting physiological and biochemical tests employing gfp-marking, observing their plant growth promoting characteristics (PGPC) and detecting plant growth parameters of inoculation assays under greenhouse conditions. Results showed that strain Zong1 had an effective growth at 28 ºC after placed at 4-60 ºC for 15 min, had a wide range pH tolerance of 6.0-11.0 and salt tolerance up to 5% of NaCl. Zong1 was resistant to the following antibiotics (µg/mL): Phosphonomycin (100), Penicillin (100) and Ampicillin (100). It could grow in the medium supplemented with 1.2 mmol/L Cu, 0.1% (w/v) methylene blue and 0.1-0.2% (w/v) methyl red, respectively....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: PGPC; Endophyte; The gpf-marker; Colonization; Co-inoculation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200043

Exploring plant growth-promotion actinomycetes from vermicompost and rhizosphere soil for yield enhancement in chickpea
Provedor de dados: 58
Autores: Sreevidya,M.; Gopalakrishnan,S.; Kudapa,H.; Varshney,R.K.
Abstract The main objective of the present study was to isolate and characterize actinomycetes for their plant growth-promotion in chickpea. A total of 89 actinomycetes were screened for their antagonism against fungal pathogens of chickpea by dual culture and metabolite production assays. Four most promising actinomycetes were evaluated for their physiological and plant growth-promotion properties under in vitro and in vivo conditions. All the isolates exhibited good growth at temperatures from 20 °C to 40 °C, pH range of 7–11 and NaCl concentrations up to 8%. These were also found highly tolerant to Bavistin, slightly tolerant to Thiram and Captan (except VAI-7 and VAI-40) but susceptible to Benlate and Ridomil at field application levels and were found...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chickpea; Actinomycetes; PGP; Streptomyces; Biocontrol; Gene expression.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000100085

Mangrove endophyte promotes reforestation tree (Acacia polyphylla) growth
Provedor de dados: 58
Autores: Castro,Renata Assis; Dourado,Manuella Nóbrega; Almeida,Jaqueline Raquel de; Lacava,Paulo Teixeira; Nave,André; Melo,Itamar Soares de; Azevedo,João Lucio de; Quecine,Maria Carolina.
ABSTRACT Mangroves are ecosystems located in the transition zone between land and sea that serve as a potential source of biotechnological resources. Brazil's extensive coast contains one of the largest mangrove forests in the world (encompassing an area of 25,000 km2 along all the coast). Endophytic bacteria were isolated from the following three plant species: Rhizophora mangle, Laguncularia racemosa and Avicennia nitida. A large number of these isolates, 115 in total, were evaluated for their ability to fix nitrogen and solubilize phosphorous. Bacteria that tested positive for both of these tests were examined further to determine their level of indole acetic acid production. Two strains with high indole acetic acid production were selected for use as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Endophytic bacteria; IAA; Phosphorus and plant growth promoting bacteria (PGPB).
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000100059

Germination and mycelial growth of Bipolaris euphorbiae Muchovej &amp;amp; Carvalho as influenced by herbicides and surfactants
Provedor de dados: 58
Autores: Nemoto,Marta Cecília Mallasen; Nahas,Ely; Pitelli,Robinson Antonio; Coelho,Lisias.
Bipolaris euphorbiae Muchovej &amp;amp; Carvalho can be combined with herbicide in order to control a large spectrum of weed species, being a strong candidate for the biocontrol of Euphorbia heterophylla L. (milk weed). The fungus release can be combined with herbicide in order to control a broader spectrum of weed species. Thus, laboratory experiments were set up to study the feasibility of using tank mixes of B. euphorbiae spores with herbicides or surfactants recommended for soybean. Mycelial growth and conidia germination were evaluated in PDA medium enriched with the herbicides oxasulfuron (80 g/ha), glyphosate (4 L/ha), bentazon (1.5 L/ha), fomesafen (1 L/ha), chlorimuron-ethyl (80 g/ha), lactofen (1 L/ha) and imazetaphyr (1 L/ha), and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bipolaris euphorbiae; Mycelial growth; Conidia germination; Herbicides; Surfactants.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000400015

The interactive effect of phosphorus and nitrogen on "in vitro" spore germination of Glomus etunicatum Becker &amp;amp; Gerdemann, root growth and mycorrhizal colonization
Provedor de dados: 58
Autores: Bressan,Wellington.
The effects of P and N amendment and its interactions on spore germination, root growth and colonized root length by Glomus etunicatum Becker &amp;amp; Gerdemann (INVAM S329) was studied "in vitro" in RiT - DNA transformed roots of Anthylis vulneraria sub sp. Sampaiana (Kidney vetch). Three N media concentrations (5, 10 and 50 mg/l) at P constant level (2 mg/l) and three P media concentrations (2, 10 and 20 mg/l) at N constant level (5 mg/l) were utilized as a treatment. Bécard &amp;amp; Fortin medium was used as a basal medium for root growth and colonized root length, and water/agar (0.8%) media was the control for spore germination. Spore germination of G. etunicatum at low P level was reduced by N addition in relation to the control media, and at low N...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mycorrhiza; Glomus etunicatum; Spore germination; Root growth; Root colonization.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000400004

NaCl salinity affects germination, growth, physiology, and biochemistry of bambara groundnut
Provedor de dados: 61
Autores: Ambede,Jane Gayalwa; Netondo,Godffrey Wafula; Mwai,Gideon Njau; Musyimi,David Mutisya.
The effects of NaCl salinity on seed germination, growth, physiology, and biochemistry of two bambara groundnut landraces (Vigna subterranea (L.) Verdc), Kakamega (white seed coat) and Mumias (red seed coat), were investigated with the aim of establishing traits, which can provide a basis for breeding to salt tolerance in groundnuts. A study was conducted under laboratorial and greenhouse conditions. Bambara groundnut seeds and plants were subjected to five concentrations of NaCl solutions with several electrical conductivities: 0 (control), 6.96, 12.93, 19.89, and 25.86 dS m-1. Germination percentage, growth, chlorophyll fluorescence, and leaf chlorophyll content were determined. Sodium chloride salinity (p&lt;0.05) significantly decreased germination and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salinity; Vigna subterranea; Growth physiology; Saline water.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202012000300002

Growth, photosynthesis and stress indicators in young rosewood plants (Aniba rosaeodora Ducke) under different light intensities
Provedor de dados: 61
Autores: Gonçalves,José Francisco de Carvalho; Barreto,Denize Caranhas de Sousa; Santos Junior,Ulysses Moreira dos; Fernandes,Andreia Varmes; Sampaio,Paulo de Tarso Barbosa; Buckeridge,Marcos Silveira.
Aniba rosaeodora is an Amazonian tree species that belongs to the family Lauraceae. Due to intense exploitation for extraction of essential oils (mainly linalol), A. rosaeodora is now considered an endangered species. On the other hand, there is little information about its ecophysiology which would be useful to support future forest planting programs. Hence, the effect of different light intensities on the growth and photosynthetic characteristics of young plants of A. rosaeodora was studied. Nine-month-old plants were subjected to four light treatments (T1= 10 a 250 µmol.m-2.s-1 / control; T2=500 to 800, T3=700 to 1000 and T4=1300 to 1800 µmol.m-2.s-1 / full sunlight). Allometric variables, gas exchange, contents of pigments and chlorophyll a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chlorophyll a fluorescence; Chloroplast pigment contents; Gas exchanges; Photochemical efficiency of photosystem II; Relative growth rate; Tropical species.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202005000300007

Effects of the size of sown seed on growth and yield of common bean cultivars of different seed sizes
Provedor de dados: 61
Autores: Lima,Elvis Rodrigues; Santiago,Aline Silva; Araújo,Adelson Paulo; Teixeira,Marcelo Grandi.
A field experiment was conducted to evaluate the effects of planting different sizes of seed of the same cultivar on biomass accumulation and grain yield of common bean (Phaseolus vulgaris L.) cultivars of different seed sizes. A 6 X 2 split-plot factorial design with four replicates was employed, with six bean cultivars as main plots and two seed sizes (small and large, the latter twice as heavy as the former) of the same cultivar as subplots. Eight weekly samplings of biomass were performed, and yield components were measured at maturity. Large seeds increased the leaf area index and the shoot and root biomass of bean cultivars, particularly at the beginning of the growth cycle, but they did not affect the pod biomass. Improved growth associated with the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Genotype; Growth analysis; Leaf area; Yield components.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202005000300001

Light as an indicator of ecological succession in brazilwood (Caesalpinia echinata Lam.)
Provedor de dados: 61
Autores: Mengarda,Liana H. G.; Souza,Rogério L. F. de; Campostrini,Eliemar; Reis,Fabrício O.; Vendrame,Wagner A.; Cuzzuol,Geraldo R. F.
The ecophysiological behavior of brazilwood (Caesalpinia echinata Lam.) plants was evaluated as affected by light quantity and quality. Nine-month-old plants were cultivated under 0%, 50%, and 80% artificial shading, and natural shading imposed by a closed canopy for a period of 392 days. At the end of that period growth parameters were measured, including relative growth rate (RGR), net assimilation rate (NAR), leaf area ratio (LAR), specific leaf mass (SLM) and root:shoot ratio (R:S). Higher leaf area, dry mass and RGR were obtained under 50% artificial shade. Under full sunlight (0% shade), growth was satisfactory showing higher R:S and SLM. Growth was inhibited under 80% artificial and natural shading indicating that C. echinata is not...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chlorophyll fluorescence; Gas exchange; Growth; Light stress; Shade; Tropical tree.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202009000100007

Integrated use of Rhizobium leguminosarum, Plant Growth Promoting Rhizobacteria and Enriched Compost for Improving Growth, Nodulation and Yield of Lentil (Lens culinaris Medik.)
Provedor de dados: 117
Autores: Iqbal,Muhammad Asif; Khalid,Muhammad; Shahzad,Sher Muhammad; Ahmad,Maqshoof; Soleman,Nawaf; Akhtar,Naeem.
Maintenance of high bacterial population in the rhizosphere improves the efficiency of these organisms. This high bacterial population can be maintained by the application of enriched compost which supports their growth and activities. Thus integrated use of Rhizobium, plant growth promoting rhizobacteria (PGPR) containing 1-aminocyclopropane-1-carboxylate deaminase (ACC-deaminase) and P-enriched compost (PEC) could be highly effective for promoting growth, nodulation, and yield of lentil (Lens culinaris Medik.). A field study was conducted to evaluate the potential of Rhizobium, PGPR containing ACC-deaminase and PEC for promoting growth of lentil. For this study, the soil type was sandy clay loam soil having pH 7.6; EC (electrical conductivity) 2.8 dS...
Tipo: Journal article
Palavras-chave: Co-inoculation; Biological N fixation; Rhizobium; ACC-deaminase; P-enriched compost; Nodulation; Yield.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000100017

Effect of genus and growth stage on the chemical and mineral composition of tropical grasses used to feed dairy cows
Provedor de dados: 118
Autores: Arzate-Vázquez,Gerardo L; Castrejón-Pineda,Francisco A; Rosiles-Martínez,René; Carrillo-Pita,Silvino; Angeles-Campos,Sergio; Vargas-Bello-Pérez,Einar.
G.L. Arzate-Vázquez, F.A. Castrejón-Pineda, R. Rosiles-Martínez, S. Carrillo-Pita, S. Angeles-Campos, and E. Vargas-Bello-Pérez. 2016. Effect of genus and growth stage on the chemical and mineral composition of tropical grasses used to feed dairy cows. Cien. Inv. Agr. 43(3): 476-485. In tropical production systems, dairy cows are rarely supplemented with minerals, which often lead to mineral imbalances. Grasses grown together in the same soil type and sampled at the same growth stage can vary widely in chemical and mineral composition; therefore, the objective of this study was to characterize the chemical and mineral composition of Urochloa spp., Megathyrsus spp., and Andropogon spp. at three different stages of growth in the same soil type. The content...
Tipo: Journal article
Palavras-chave: Cows; Forage; Nutritive value; Ruminants; Trace minerals.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000300013

Nitrogen dose and type of herbicide used for growth regulation on the green coloration intensity of Emerald grass
Provedor de dados: 65
Autores: Gazola,Raíssa Pereira Dinalli; Buzetti,Salatiér; Gazola,Rodolfo de Niro; Castilho,Regina Maria Monteiro de; Teixeira Filho,Marcelo Carvalho Minhoto; Celestrino,Thiago de Souza; Dupas,Elisângela.
ABSTRACT: Nitrogen (N) is the main nutrient responsible for the green coloration of lawns but also stimulates the growth of the aerial portion of grass, thus increasing mowing expenses. Therefore, herbicides may be used as a growth regulator. The ideal herbicide will reduce lawn height without affecting esthetics. Toward this end, the aim of the present study was to evaluate the green coloration of Emerald grass ( Zoysia japonica Steud.) under the effect of different N doses or herbicides used as growth regulators. The study site consisted of randomized blocks containing 20 treatments arranged in a 5×4 factorial design with four treatment groups: four herbicides (glyphosate, imazaquin, imazethapyr, and metsulfuron-methyl, accounting for 200, 420, 80, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zoysia japonica Steud.; Lawn; Leaf chlorophyll content; Digital imaging; Fertilization; Glyphosate; Imazaquin; Imazethapyr; Metsulfuron-methyl.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000600984

Growth, survival and bone alterations in Piaractus mesopotamicus larvae under different rearing protocols
Provedor de dados: 65
Autores: Hernández,David Roque; Agüero,Carlos Hernán; Santinón,Juan José; González,Alfredo Oscar; Sánchez,Sebastián.
The pacu (Piaractus mesopotamicus) is a neotropical freshwater fish. It is one of the most important species farmed in areas of the Parana and Paraguay Rivers basins. The effects of different rearing protocols on growth, survival and incidence of skeletal malformations in pacu larvae were analyzed. A total of six experimental treatments were considered, consisting of: a semi-intensive larviculture (LS) in ponds; intensive larviculture (LIn) in laboratory (both LS and LIn until 60 days of life); and mixed larviculture, with 20 days of semi-intensive larviculture into cages in ponds after 14 (L1), 21 (L2), 33 (L3) or 40 (L4) days of laboratory larviculture. At the end of the experimental period, LSlarvae showed higher growth rate, with average weight values...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Piaractus mesopotamicus; Larviculture; Retention; Bone malformations.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000901667

Средние скорости роста и их свойства
Provedor de dados: 13
Autores: Парчевский, В. П.; Парчевский, К. В.
Проведен  критический  анализ  уравнений,  используемых биологами для  расчета скоростей роста организмов. Указаны ошибки, допускаемые исследователями. Даны  выводы уравнений для вычисления абсолютных и относительных средних скоростей, рассмотрены их свойства. Приведены практические рекомендации.
Tipo: Journal Contribution
Ano: 2000
URL: http://repository.ibss.org.ua/dspace/handle/99011/1111

Total replacement of fish oil by soybean or linseed oil with a return to fish oil in turbot (Psetta maxima) - 1. Growth performance, flesh fatty acid profile, and lipid metabolism
Provedor de dados: 5
Autores: Regost, Christelle; Arzel, Jacqueline; Robin, Jean; Rosenlund, Grethe; Kaushik, Sadasivam.
The aim of the study was to investigate the replacement of fish oil by vegetable oils and the effects of a washout with a return to fish oil on growth performances and lipid metabolism. three experimental fish meal-based isonitrogenous (crude protein content: 57.5%) and isolipidic (crude lipid content: 16.5%) diets were formulated containing either 9% of added fish oil (170), soybean oil (SO), or linseed oil (LO). Each diet was distributed to triplicate groups of 25 marketable size turbot (initial body weight of 579 g) grown in seawater at water temperature of 17 T. Fish were fed once a day to visual satiety. At the end of the growth trial, which lasted 13 weeks, all groups of turbot were fed with FO diet for 8 weeks. The growth of turbot was high, but the...
Tipo: Text
Palavras-chave: Lipogenesis; Fatty acids; Liver; Muscle; Body composition; Growth; Vegetable oil; Fish oil; Psetta maxima.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/publication-375.pdf

Evaluation of behavioral changes induced by a first step of domestication or selection for growth in the European sea bass (Dicentrarchus labrax): A self-feeding approach under repeated acute stress
Provedor de dados: 5
Autores: Millot, Sandie; Pean, Samuel; Leguay, Didier; Vergnet, Alain; Chatain, Beatrice; Begout, Marie-laure.
Among other strategies to improve fish welfare in rearing environment, domestication and/or selective breeding was proposed to minimize fish responsiveness to husbandry practices. To verify this hypothesis on a recently domesticated specie, the sea bass, Dicentrarchus labrax, L., an experiment was realized, using four populations differing according to their level of domestication or selection: one population produced from wild parents (Wild), one population produced from parents domesticated for one generation (Domesticated) and two produced from parents selected for growth for one generation (Selected A and Selected B). The experiment was carried out over 91 days with 600 fish (50 fish per tank, 150 fish per population). After a control period, the fish...
Tipo: Text
Palavras-chave: Feed intake; Feeding rhythm; Specific growth rate; Adaptation capacities; Welfare.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00011/12254/9030.pdf

Effect of broodstock diets on reproduction of fish.
Provedor de dados: 5
Autores: Watanabe, T.
Nutrition is known to have a profound effect upon gonadal growth and fecundity, however and recently, little information was available on broodstock nutrition of fish. The purpose of this review is, therefore, to summarize and discuss recent advances in knowledge of broodstock nutrition and to indicate the necessity for further research on detailed nutritional requirements of broodstock.
Tipo: Text
Palavras-chave: INW; Japan Pagrus major Fish culture Animal reproductive organs Feeding Eggs Marine fish Nutritional requirements Vitamins Lipids Proteins Fecundity Spawning Diets Growth Sexual reproduction.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1438.pdf

Utilisation de l'analyse mathématique de la croissance dans la comparaison de diverses techniques d'élevage de la Palourde
Provedor de dados: 5
Autores: Menesguen, Alain; Flassch, Jean-pierre; Nedelec, J.
In order to determine the best strategy for manilla clam rearing, twenty seven batches of the species Rudilapes philippinarum (Adams, Reeve, 1850) were reared under various technical conditions, over periods of up to two and-a-half years. The numerous data conceming the length growth (sampling was donc every one-and-a-half months) allowed us to quantify, by means of the parameters appearing in a seasonaly modulated von Bertalanffy growth curve, several aspects of the growth process in each balch. Subsequently, on the basis of a stepwise multilinear regression technique, we searched for an ernpirical relation between the technical characteristics of the various rearing procedures (independent variables) and the previous growth pararneters (dependent...
Tipo: Text
Ano: 1984
URL: http://archimer.ifremer.fr/doc/00018/12952/9927.pdf

Zooplankton production in the Mediterranean Sea
Provedor de dados: 5
Autores: Greze, V.
An attempt is made to calculate the specific production of major zooplankton groups using a physiological method proposed by Winberg. The present report is based on material obtained from 50 stations in the Aegean and Adriatic Seas; Tunisian Strait and Algerian-Provencal basin. The algorithm of Zharov, used by the author, includes the data biomass, abundance, relation between metabolism at given temperature and organism, dependence of production upon metabolism, and the food utilization coefficient for growth.
Tipo: Text
Palavras-chave: MED; Body weight; Biomass; Growth; Food conversion; Temperature effects; Animal metabolism; Secondary production; Zooplankton.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-1513.pdf

Mineral requirement of Penaeids
Provedor de dados: 5
Autores: Piedad-pascual, F.
Marine shrimps absorb minerals from their aquatic environment aside from the minerals that come from the food they eat. Thus, the dietary requirement of shrimps for certain minerals will depend on the amounts and availability of these minerals in the aquatic environment. Dietary sources for growth may be necessary due to losses during moltings.
Tipo: Text
Palavras-chave: Penaeus californiensis; Penaeus monodon; Penaeus japonicus; Penaeidae; Malacostraca; Juveniles; Moulting; Feed efficiency; Survival; Growth; Phosphorus; Calcium; Diets; Shrimp culture; Nutritional requirements.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1454.pdf

Summer mortality of the Pacific cupped oyster Crassostrea gigas in the Bay of Marennes-Oleron (France). Spatial variability of environmental parameters, growth and production rates using a Geographical Information System (GIS)
Provedor de dados: 5
Autores: Soletchnik, Patrick; Le Moine, Olivier; Razet, Daniel; Geairon, Philippe; Faury, Nicole; Goulletquer, Philippe; Robert, Stephane.
The Marennes-Oleron Bay is the first rearing area in Europe for the cupped oyster, with 35 000 tons proudced on a yearly basis. This species has suffered several chronic summer mortalities for the last 10 years.
Tipo: Text
Palavras-chave: Marennes Oleron Bay; Geogaphical Information System; GIS; Production; Growth; Crassostrea gigas; Oysters; Summer mortality.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/1999/acte-3376.pdf

The genetic correlation between feed conversion ratio and growth rate affects the design of a breeding program for more sustainable fish production
Provedor de dados: 5
Autores: Besson, Mathieu; Komen, Hans; Rose, Gus; Vandeputte, Marc.
Background Most fish breeding programs aim at improving growth rate and include feed conversion ratio (FCR) neither in the breeding goal nor in the selection index, although decreasing FCR is known to increase farm profit and decrease environmental impacts. This is because FCR is difficult to measure in fish that live in groups and FCR is assumed to have a favourable (negative) genetic correlation with growth, although the magnitude of this correlation is unknown. We investigated the effect of the genetic correlation between growth and FCR on the economic and environmental responses of a two-trait breeding goal (growth and FCR), compared to a single-trait breeding goal (growth only). Next, we evaluated the weights to assign to growth and FCR in a two-trait...
Tipo: Text
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00610/72195/70976.pdf

Growth of hyperthermophilic microorganisms for physiological and nutritional studies
Provedor de dados: 5
Autores: Godfroy, Anne; Postec, Anne; Raven, N.
Tipo: Text
Palavras-chave: BACTERIAL GROWTH; SCALE CULTIVATION; ORDER THERMOTOGALES; TEMPERATURE BIOREACTOR; HYDROSTATIC PRESSURE; CONTINUOUS CULTURE; PYROCOCCUS FURIOSUS; SP NOV; ARCHAEON THERMOCOCCUS LITORALIS; SEA HYDROTHERMAL VENT.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-3890.pdf

Intensive larval rearing trials of red drum (Sciaenops ocellata ) in Martinique (F.W.I.).
Provedor de dados: 5
Autores: Soletchnik, Patrick; Thouard, Emmanuel; Goyard, Emmanuel.
The red drum Sciaenops ocellata (Linneaus, 1766) was introduced in Martinique (F.W.I.) from the United States (Texas and Florida). Thirteen intensive larval rearing attempts, from 7 batches of imported eggs, have been conducted for two years.
Tipo: Text
Palavras-chave: Pisces; Growth; Larval development; Rearing; Hatching; Nutrition; Stocking density; Food conversion; Growth rate; Survival; Fingerlings; Fish; Eggs.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1434.pdf

A Dynamic Energy Budget (DEB) growth model for Pacific oyster larvae, Crassostrea gigas
Provedor de dados: 5
Autores: Rico-villa, Benjamin; Bernard, Ismael; Robert, Rene; Pouvreau, Stephane.
Tipo: Text
Palavras-chave: Dynamic Energy Budget; Crassostrea gigas; Bivalve larvae; Ecophysiology; Growth.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00009/11996/9040.pdf

Premieres donnees biologiques sur la langouste de Corse, Palinurus elephas Fabricius.
Provedor de dados: 5
Autores: Campillo, Albert; Amadei, Jacques.
Fishing for the red spiny lobster constitutes an important part of the artisanal fishery in Corsica. A biological study of the red spiny lobster was undertaken (fishing gear used, production and yield, biological data, relative growth, reproduction, growth, alimentary diet, bathymetric repartition).
Tipo: Text
Palavras-chave: Corsica MED; France Palinurus elephas Fishery data.
Ano: 1978
URL: http://archimer.ifremer.fr/doc/1978/publication-1963.pdf

Systematics and ecology of New Caledonian Faviinae (Coelenterata – Scleractinia)
Provedor de dados: 16
Autores: Wijsman-Best, Maya.
Taxonomic treatment of a large collection of recent corals from New Caledonia belonging to the subfamily Faviinae resulted in the full description of thirty-four species amongst which two are new, while some others are briefly mentioned. A pattern for the subfamily in the influence of environmental factors on growth was found. A comparison between this general pattern and the environment-induced modification of each different form allowed a particular growth form’s ecology to be used as a criterion for defining the species to which it should be allocated.
Tipo: Article / Letter to the editor
Ano: 1972
URL: http://www.repository.naturalis.nl/record/504444

Balanus tintinnabulum (Linnaeus, 1758) autochthonous in the Netherlands, with notes on size and growth rate of other operculate barnacles (Cirripedia, Balanomorpha)
Provedor de dados: 16
Autores: Buizer, D.A.G.
Balanus tintinnabulum (Linnaeus, 1758) is recorded as autochthonous from buoys in the coastal waters of the Netherlands. Dimensions reached within a limited time, giving an indication of growth rate, are given for Balanus tintinnabulum, Balanus perforatus Bruguière, 1789, B. improvisus Darwin, 1854, B. crenatus Bruguière, 1789, and Elminius modestus Darwin, 1854.
Tipo: Article / Letter to the editor
Ano: 1980
URL: http://www.repository.naturalis.nl/record/505536

Growth, reproduction and vertical migration in Clio pyramidata Linné, 1767 forma lanceolata (Lesueur, 1813), with notes on some other Cavoliniidae (Mollusca, Pteropoda)
Provedor de dados: 16
Autores: Spoel, S. van der.
Shell growth and size variation in populations of Diacria trispinosa Clio pyramidata, Cuvierina columnella, and Cavolinia gibbosa are studied. Attention is given to differences in the size variations of the four species caused by differences in their developmental biology. The reproductive cycle of Clio pyramidata forma lanceolata in the Bermuda Area is described and it is shown that there are more than one protandric hemaphrodite sexual cycles in one animal. The vertical migration of the four mentioned species is discussed.
Tipo: Article / Letter to the editor
Ano: 1973
URL: http://www.repository.naturalis.nl/record/505038

Estudio de edad y crecimiento de la raya hocicuda Dipturus chilensis (Guichenot,1848) en el Atlántico Sudoccidental (34º -55º LS y 52º -69º LW)
Provedor de dados: 20
Autores: Zavatteri, A.
This paper deals with the age and growth parameters of the Southwest Atlantic beaked skate Dipturus chilensis, as well as with some reproductive features of the species. Samples of individuals inhabiting 34°-55°S and 52°- 69°W were analyzed. They were taken during surveys carried out by the National Institute for Fisheries Research and Development (INIDEP) research vessels, as well as by a landing sampling at Mar del Plata port. The fish age was determined by counting growth rings from thin sections of the vertebral centra of 414 fish ranging 24-110 cm (203 males) and 24-115 cm (211 females) total length. The vertebral sections were stained using cobalt  hloride. Both average per cent error (APE=5.94) and precision (D=5.89) indexes suggested that the...
Tipo: Theses and Dissertations
Palavras-chave: Age; Age determination; Growth; Length-weight relationships; Sexual maturity; Age determination; Growth; Age; Sexual maturity; Http://aims.fao.org/aos/agrovoc/c_24110; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_186; Http://aims.fao.org/aos/agrovoc/c_7016.
Ano: 2010
URL: http://hdl.handle.net/1834/3585

Tasa de crecimiento de Anadara tuberculosa (Sowerby, 1833) (Bivalvia: Arcidae) en la reserva ecológica manglares Cayapas-Mataje (REMACAM): Un análisis basado en sistemas de cajas suspendidas
Provedor de dados: 20
Autores: Flores, L.
La tasa de crecimiento y el incremento neto de crecimiento de Anadara tuberculosa fue estudiada por medio de muestreos mensuales en sistemas de cultivo entre el 2002 y 2003 en la Comunidad El Bajito en la REMACAM. Ocho cajas suspendidas fueron utilizadas, cuatro con conchas entre los 30 y 34.9 mm y cuatro con conchas entre los 35 y 39.9 mm. No se encontraron diferencias significativas entre cada uno de los sistemas de acuerdo a cada uno de los rangos de tallas utilizados, lo que permitió establecer incrementos netos entre los 10.17 a 11.99 mm y de 8.55 a 10.68 mm, respectivamente. El periodo de mayor crecimiento de A. tuberculosa fue de octubre hasta abril. Se estimaron tasas de crecimiento mensual que variaron de 0.01 a 1.94 mm mes"-1 en el primer caso y...
Tipo: Journal Contribution
Palavras-chave: Growth rate; Shells; Experimental culture.
Ano: 2010
URL: http://hdl.handle.net/1834/4838

Estudio de edad y crecimiento del besugo Pagrus pagrus del sector costero bonaerense
Provedor de dados: 20
Autores: Cotrina, C.P.; Raimondo, M.C.
The samples analyzed for growth parameters determination both in length and weight of the red porgy Pagrus pagrus corresponded to the years 1972 up to 1981 and to two areas of the Buenos Aires (Argentina)coastal shelf: a northern one (35°-36°S)and a southern one (39°-40°). Through age determination, based on the countdown of rings in scales, the parameters of the von Bertalanffy growth equation for the two mentioned areas were estimated as follows: 1)northern area:Lý=44.7;k=0.154;to=-2.96, and 2)southern area:Lý=49.9;k=0.153;to=-2.81. The results shown that the infinite length of the red porgy from the southern area was the greatest. The maximum likelihood method permitted to calculate, for each region,the three parameters and the respective confidence...
Tipo: Journal Contribution
Palavras-chave: Age determination; Growth; Length-weight relationships; Age determination; Growth; Http://aims.fao.org/aos/agrovoc/c_24110; Http://aims.fao.org/aos/agrovoc/c_3394.
Ano: 1997
URL: http://hdl.handle.net/1834/1937

Results of the global survey on Voluntary Sustainability Standards
Provedor de dados: 21
Autores: Lernoud, Julia.
Results of the global survey on Voluntary Sustainability Standards:  - Voluntary Sustainability Standards (VSS) area worldwide and selected commodities  - Cocoa: Area growth by VSS 2008-2014  - Growth of VSS compliant area worldwide 2008-2013 (selected crops)
Tipo: Conference paper, poster, etc.
Palavras-chave: Surveys and statistics Markets and trade Education; Extension and communication.
Ano: 2015
URL: http://orgprints.org/29362/1/T4SD-2015-10-02-Session1-Lernoud-Julia-web.pdf

Organic in the supermarkets – global trends
Provedor de dados: 21
Autores: Richter, Toralf.
The presentation gives an overview of the current status of the markteing of organic productsion in supermarkets world-wide.     The main conclusions are:     - In 2004 thre waw an organic market growth in most observed countries  - Conventional retailer play a dominant role as organic market driver  - There are many countries with growing or emerging markets  - Also matured organic markets provide possibilities for market growth  - Organic and quality food constitute an opposite trend to discount food
Tipo: Conference paper, poster, etc.
Palavras-chave: Markets and trade.
Ano: 2005
URL: http://orgprints.org/4895/1/Richter%2D2005%2Dsupermarktreport.pdf

Growth Trends in European Organic Food and Farming
Provedor de dados: 21
Autores: Willer, Helga; Schaack, Diana; Lernoud, Julia; Meredith, Stephen.
Content  Organic market and production trends 2014  Organic market  Organic operators  Organic agricultural land  Organic land use, crops and livestock
Tipo: Book chapter
Palavras-chave: Surveys and statistics; European Union; Europe.
Ano: 2016
URL: http://orgprints.org/34111/1/willer-etal-2016-chapter2-ifoameu_organic_in_europe_2016.pdf

HealthyGrowth - France - Biocoop case study Fact sheet
Provedor de dados: 21
Autores: Lamine, Claire.
This document is a 2 pages synthesis of the overall report of the Healthygrowth project Biocoop’s case study - France (http://orgprints.org/29253/)
Tipo: Report
Palavras-chave: Food security; Food quality and human health Markets and trade Consumer issues Produce chain management.
Ano: 2015
URL: http://orgprints.org/30700/1/Lamine_2015_Biocoop_Case%20study_FactSheet.pdf

HealthyGrowth - France - Biovallée case study Fact sheet
Provedor de dados: 21
Autores: Lamine, Claire; Bui, Sibylle.
This document is a 2 pages synthesis of the overall report of the Healthygrowth project Biovallée’s case study - France (http://orgprints.org/29254/)
Tipo: Report
Palavras-chave: Community development Food security; Food quality and human health Markets and trade Consumer issues Policy environments and social economy Produce chain management.
Ano: 2015
URL: http://orgprints.org/30703/1/Lamine_2015_Biovallee_Case%20study_FactSheet.pdf

Continued growth in Europe: Current trends in organic production
Provedor de dados: 21
Autores: Willer, Helga.
This presentation gives an overview of current organic statistics in Europe
Tipo: Conference paper, poster, etc.
Palavras-chave: Europe.
Ano: 2005
URL: http://orgprints.org/2781/1/willer%2D2005%2Deurope%2Dbiofach.pdf

WP-3 Guideline for Data Collection
Provedor de dados: 21
Autores: Furtschegger, Christoph; Schermer, Markus; Milestad, Rebecka; Risku-Norja, Helmi.
The deliverable D3.1 of the HealthyGrowth project describes the methodological guideline for case studies selection procedure.
Tipo: Other
Palavras-chave: Surveys and statistics; Produce chain management.
Ano: 2013
URL: http://orgprints.org/27857/1/D3.1_Methodological%20Guidelines%20for%20case%20studies_HealthyGrowth_19.12.2013.pdf

Healthy growth: From niche to volume with integrity and trust. Om prosjektet
Provedor de dados: 21
Autores: Kvam, Gunn-Turid.
Presentasjon av prosjektet Healthygrowt for stakeholders i trøndersk landbruk.    Arr: Kompetansekafe, Kompetanseløft Trøndersk Landbruk. Norsk senter for bygdeforskning, Trondheim 13.12.2013.
Tipo: Conference paper, poster, etc.
Palavras-chave: "Organics" in general Values; Standards and certification Knowledge management.
Ano: 2013
URL: http://orgprints.org/27678/2/27678.pdf

Antimicrobial properties of berries
Provedor de dados: 21
Autores: Puupponen-Pimiä, Riitta.
Berries, especially their antimicrobial properties, have been studied intensively at VTT over the past ten years in several research projects. In these in vitro studies phenolic berry extracts of common Nordic berries selectively inhibited the growth of harmful bacteria and human intestinal pathogens, without affecting the growth of beneficial lactic acid bacteria.
Tipo: Conference paper, poster, etc.
Palavras-chave: Food security; Food quality and human health.
Ano: 2007
URL: http://orgprints.org/15993/1/berry.pdf

The effect of different mulches on the growth and yield of organically grown strawberry
Provedor de dados: 21
Autores: Kivijärvi, Pirjo; Prokkola, Soile.
Different mulches were studied in field trials over a three-year period under organic production in Mikkeli and Ruukki. The mulching materials were black plastic, flax fibre mat (woodchips+buckwheat husk in 2002), green mass, straw, buckwheat husk, birch woodchips and pine woodchips.
Tipo: Conference paper, poster, etc.
Palavras-chave: Fruit and berries.
Ano: 2003
URL: http://orgprints.org/4110/1/4110.pdf

Leaf series as an image of shoot growth
Provedor de dados: 21
Autores: Bloksma, Joke; Jansonius, Pieterjans.
The sequential leaves of the shoot show a 'biography' of the growing season. The shape of the leaves shows the conditions under which the leaves are formed.   This method was developed to help answer the questions of fruit growers and researchers. Fruit cultivation researchers need to record vegetative development during the course of the growing season. The quality of the shoots with the leaves determines the 'production capacity' of the tree and the quality of the fruit and the buds for the next year.
Tipo: Book
Palavras-chave: Fruit and berries.
Ano: 2000
URL: http://orgprints.org/10682/1/1146.pdf

MINNESOTA AGRICULTURAL GROWTH, 1880-1970
Provedor de dados: 31
Autores: Fitzharris,   Joseph C.
The growth of Minnesota's agricultural sector, 1880-1970, was quite considerable. More important than providing a history, this study provides the necessary background for examination of the agricultural research system of Minnesota. Here, the record will be detailed. This study examines, in turn, the record of: output and production; the factors of production; relative output and input prices changes; and the structural changes in the sector
Tipo: Working or Discussion Paper
Palavras-chave: Community/Rural/Urban Development.
Ano: 1976
URL: http://purl.umn.edu/14023

AN ECONOMIC INTERPRETATION OF IMPACT OF PHENOLOGICALLY TIMED IRRIGATION ON CORN YIELD
Provedor de dados: 31
Autores: Gowon,   Dawuda T.; Andersen,   Jay C.; Biswas,   Basudeb.
An economic production function was derived in an analysis of water application to corn by phonological time periods. The quantities of use of water by growth periods as delineated by physical stages were tested for influence on final output of dry matter and grain. Several years’ data for three locations were utilized. The results tend to confirm the conceptual models and previous work in this type of analysis. Certain periods of growth were more critical than others.
Tipo: Journal Article
Palavras-chave: Crop Production/Industries.
Ano: 1978
URL: http://purl.umn.edu/32553

GLOBALIZATION OF THE FROZEN POTATO INDUSTRY
Provedor de dados: 31
Autores: Plummer,   Charles; Makki,   Shiva S.
This paper examines the globalization of the frozen potato industry, including the expansion of production and processing of potato products in the global market place, and future prospects for the industry. We find that developing countries with high income growth rates could be major growth markets for U.S. frozen potato products in the future.
Tipo: Conference Paper or Presentation
Palavras-chave: International Relations/Trade.
Ano: 2004
URL: http://purl.umn.edu/19950

Impacts of Land Ownership and Debt Levels on Farm Survival and Financial Growth
Provedor de dados: 31
Autores: Cole,   John D.; Pattanaik,   Nalini; Janssen,   Larry.
This paper examines the impact of alternative land ownership and debt levels on profitability, growth, and survival of representative cash grain and beef farm, using South Dakota conditions as case examples. Baseline characteristics of three representative farms / ranches in South Dakota are discussed.
Tipo: Conference Paper or Presentation
Palavras-chave: Land Economics/Use.
Ano: 2006
URL: http://purl.umn.edu/21477

City Size Distribution and Growth
Provedor de dados: 31
Autores: Kopp,   Andreas.
We discuss theoretical approaches to study the relationship between the size distribution of a nation's cities and macroeconomic growth. The discussion is based on the hypothesis of the New Growth Theory that inter-personal spillovers of education and skills determine the long-run growth of the economy. Growth theory treats such externalities as being uniformly effective over national territories and completely internal to nation-state. This suggests a link to urban economics which has a long tradition of considering human capital externalities as driving forces of the growth of urban centers, with productivity increases inducing immigration. From the perspective of the urbanization literature long-run macroeconomic growth is thus determined by the...
Tipo: Working or Discussion Paper
Palavras-chave: Community/Rural/Urban Development.
Ano: 2000
URL: http://purl.umn.edu/26303

ECONOMIC GROWTH IN WESTERN AUSTRALIA
Provedor de dados: 31
Autores: Parker,   M.L.; Yeow,   A.G.
One measure of the economic activity generated by the primary sector is the extent to which the demand for its products is retained within the sector or is transmitted elsewhere. In this article an analysis is made of these inter-relationships between industries and between each industry and the trade sector, as they influence the rate and direction of economic growth in Western Australia. Two input-output models of the Western Australian economy are then used to examine structural changes implied in changes in input coefficients over time.
Tipo: Journal Article
Palavras-chave: Community/Rural/Urban Development.
Ano: 1966
URL: http://purl.umn.edu/22673

Financial Structure, Production and Productivity Growth in U.S. Food Manufacturing Industry
Provedor de dados: 31
Autores: Hossain,   Ferdaus; Jain,   Ruchi.
This paper examines the effects of financial decsion on production, input demands, profitability, and productivityis in U.S. food manufacturing industry. Empirical results shows that output supply, variable input demands, profitability and productivity are affected by agency costs of debt and signaling benefits of dividend payments. Positive contribution of signalling benefits of dividend payments was more than offset by the negative effects of agency cost of debt in TFP growth.
Tipo: Conference Paper or Presentation
Palavras-chave: Agribusiness.
Ano: 2001
URL: http://purl.umn.edu/20756

ECONOMIC GROWTH WITH LIMITED AGGLOMERATION ECONOMIES
Provedor de dados: 31
Autores: Murova,   Olga I.; Rainey,   Daniel V.
This study examined how various inputs including employment agglomeration in different industries affected economic growth of Arkansas during 1986-1999.  Analysis showed locations that are able to successfully substitute infrastructure, human capital, and amenities, are more likely to see increased incomes.
Tipo: Conference Paper or Presentation
Palavras-chave: Employment agglomeration; Input potentials; Input utilization; Personal income; Community/Rural/Urban Development; Labor and Human Capital.
Ano: 2002
URL: http://purl.umn.edu/19723

R&amp;D INVESTMENT AND PRODUCTIVITY GROWTH IN U.S. AND CANADIAN FOOD MANUFACTURING
Provedor de dados: 31
Autores: Chan-Kang,   Connie; Buccola,   Steven T.
Productivity growth in the Canadian processed food industry has lagged behind that in the United States because of a relatively low rate of R&amp;D investment.  Although U.S. firms generally have a technological advantage over Canadian firms, marginal rates of return to R&amp;D are higher in Canada.
Tipo: Conference Paper or Presentation
Palavras-chave: Agribusiness; Productivity Analysis.
Ano: 1998
URL: http://purl.umn.edu/20880

The Evolving Ethanol Industry in the United States
Provedor de dados: 31
Autores: Eidman,   Vernon R.
This paper discusses the likely growth in the production of ethanol from grain in the United States over the next 4 to 5 years. It describes how the costs of production have changed and some of the major factors that are likely to impact profitability and rate of growth in the industry over this period. It discusses co-product production and utilization, and the impact of expanding ethanol production on land use. The final section briefly discusses recent progress in the production of liquid fuels from cellulose.
Tipo: Conference Paper or Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2007
URL: http://purl.umn.edu/9305

THE ECONOMIC CONSEQUENCES OF RESERVING FEDERAL LAND FOR BIODIVERSITY PROTECTION IN THE U.S. PACIFIC NORTHWEST
Provedor de dados: 31
Autores: Hunt,   Gary L.; Kerkvliet,   Joe; Plantinga,   Andrew J.
We empirically investigate the effects of the Northwest Forest Plan on two widely-used economic indicators:  employment growth and net migration.  We find weak evidence that that setting aside 10 million acres of productive forest land for biodiversity protection had a large, but short-lived effect on employment growth.
Tipo: Conference Paper or Presentation
Palavras-chave: Labor and Human Capital; Land Economics/Use.
Ano: 2004
URL: http://purl.umn.edu/20288

PRODUCTIVITY GROWTH IN GERMAN AGRICULTURE: 1850 TO 1970; APPENDIX, DATA ON PRODUCTIVITY GROWTH IN GERMAN AGRICULTURE: 1850 TO 1970
Provedor de dados: 31
Autores: Weber,   Adolf.
The purpose of this paper is to describe the long-term trends in German agricultural development for the period since 1850 and to test the "induced innovation" hypothesis against German experience.
Tipo: Working or Discussion Paper
Palavras-chave: Productivity Analysis.
Ano: 1973
URL: http://purl.umn.edu/13404

CHINESE REGIONAL AGRICULTURAL PRODUCTIVITY IN THE 1990'S
Provedor de dados: 31
Autores: Tong,   Haizhi.
A nonparametric Malmquist index and a stochastic frontier translog production function are employed to measure the regional agricultural productivity growth in China during the 1990's. Both models show high average productivity growth in 1994 &amp; 1995 and average productivity decrease during 1996 to 1999, although the regional rates are different from two models.
Tipo: Conference Paper or Presentation
Palavras-chave: Productivity Analysis.
Ano: 2002
URL: http://purl.umn.edu/19804

SOIL DEGRADATION, TECHNICAL CHANGE AND GOVERNMENT POLICIES IN SOUTHERN MALI
Provedor de dados: 31
Autores: Dalton,   Timothy J.; Masters,   William A.
This study links intertemporal optimization to a biophysical crop growth model finding that agricultural intensification does not dramatically degrade soils in southern Mali.  Productivity growth can be sustained through adoption of new techniques, particularly with policy reforms to  reduce marketing costs and tax the use of common-property resources.
Tipo: Conference Paper or Presentation
Palavras-chave: Productivity Analysis.
Ano: 1997
URL: http://purl.umn.edu/21033

Spatial Variability of Tourism Demand and Differences in Economic Impact in a Rural Economic Development Context
Provedor de dados: 31
Autores: Das,   Biswa R.; Rainey,   Daniel V.
Statistically predicted future tourism demand is used to conduct an economic impact analysis in twelve tourism zones in the state of Arkansas. The analysis reveals spatial variability in employment, and output growth that will continue into the future. Tourism has the potential as an economic growth engine for the state, especially in economically disadvantaged regions with long-term benefits.
Tipo: Conference Paper or Presentation
Palavras-chave: Tourism Demand; Economic Impact Analysis; Rural Development; Community/Rural/Urban Development; Resource /Energy Economics and Policy; R15; R58.
Ano: 2008
URL: http://purl.umn.edu/6799

META-RULES
Provedor de dados: 31
Autores: Schreiner,   Mark.
Meta-rules, or rules for making rules, determine the costs of innovation and thus the pace of economic growth. Adapting rules to a changing economic environment through explicit, well-designed meta- rules makes economic growth quicker, less painful, and more certain than adapting rules through chance-based evolution.
Tipo: Working or Discussion Paper
Palavras-chave: Research and Development/Tech Change/Emerging Technologies.
Ano: 1995
URL: http://purl.umn.edu/28331

SUPPLY GROWTH AND DAIRY INDUSTRY DEREGULATION
Provedor de dados: 31
Autores: Chang,   Ching-Cheng; Stefanou,   Spiro E.
Optimal control models of aggregate milk supply and demand behavior are used to describe the optimal phasing of the deregulatory dairy price support in the presence of supply growth.  Producers are assumed to face costs of adjustment, and are myopic with respect to price expectations and the adoption of the new quasi-fixed factor augmenting technology.
Tipo: Journal Article
Palavras-chave: Demand and Price Analysis; Livestock Production/Industries.
Ano: 1987
URL: http://purl.umn.edu/28891

Farm Credit Employees' Perceptions of Loan Business Relative to Different Types of Borrowers
Provedor de dados: 31
Autores: Briggeman,   Brian C.; Kenkel,   Philip L.
Characteristics and potential loan volume growth of different borrower types is assessed relative to the opinions of Oklahoma Farm Credit senior officials and loan officers.  Senior officials are more positive relative to the characteristics of non-traditional borrowers; however, both agree these borrowers provide the best opportunity for loan growth.
Tipo: Conference Paper or Presentation
Palavras-chave: Agricultural Finance.
Ano: 2007
URL: http://purl.umn.edu/34895

Exploring Variations in Income Growth in Southeastern United States
Provedor de dados: 31
Autores: Gyawali,   Buddhi Raj; Banerjee,   Swagata (Ban); Hill,   Anquinette; Bukenya,   James O.
This paper examined income convergence in 875 counties of the 10-state southeastern region using Census data for 1980 and 2000. Logarithmic difference of average per capita income between those years was regressed on socioeconomic variables. Changes in education, labor force, and employment were strong determinants of income growth.
Tipo: Presentation
Palavras-chave: Consumer/Household Economics; Financial Economics; Public Economics.
Ano: 2012
URL: http://purl.umn.edu/120933

FINANCING OF GROWTH IN AGRICULTURAL COOPERATIVES
Provedor de dados: 31
Autores: Lerman,   Zvi; Parliament,   Claudia.
Sources and uses of funds in agricultural cooperatives are examined and compared to the aggregate of nonfinancial corporations for the period 1973-1987.  Cooperatives are observed to finance nearly half their growth with equity.  The equity financing proportion of cooperatives is statistically indistinguishable from the national average of nonfinancial corporations in the years 1973-1983 and is consistently higher than the national average since 1984.  This finding contradicts the hypothesis of equity shortage in cooperatives.
Tipo: Working or Discussion Paper
Palavras-chave: Agribusiness.
Ano: 1991
URL: http://purl.umn.edu/13410

Discerning Differences between Producer Groups and Organic Adoption Barriers in Texas
Provedor de dados: 31
Autores: Lau,   Michael H.; Hanagriff,   Roger D.; Constance,   Douglas H.; York,   Mary.
The number of certified organic operations in Texas has remained relatively stagnant while nationally the organic food sector has experienced double-digit growth. To understand why this occurring, a survey was distributed to a random sample of 4,006 Texas producers. The results will assist in developing strategies to promote the growth of organic production in Texas.
Tipo: Conference Paper or Presentation
Palavras-chave: Crop Production/Industries.
Ano: 2008
URL: http://purl.umn.edu/6873

CONSUMER RISK PERCEPTION PROFILES FOR THE FOOD-RELATED BIOTECHNOLOGY,  RECOMBINANT BOVINE GROWTH HORMONE (rbGH)
Provedor de dados: 31
Autores: Grobe,   Deana; Douthitt,   Robin; Zepeda,   Lydia.
Tipo: Conference Paper or Presentation
Palavras-chave: Consumer risk perception; Biotechnology; Bovine growth hormone; Food Consumption/Nutrition/Food Safety.
Ano: 1997
URL: http://purl.umn.edu/25953

Sustainable Development and Economic Growth in the Amazon Rainforest
Provedor de dados: 31
Autores: Nogueira,   Jorge Madeira; Kyle,   Steven C.
This paper analyzes the implications of the concept of sustainable development for economic growth. Most definitions of "sustainability" currently in use provide little guide for policy while some would in fact work against the process of development if they were to be operationalized. The difficulties in promoting "sustainable development" in the context of a growing economy where there is a large segment of the population living in absolute poverty are illustrated with the case of the Brazilian Amazon.
Tipo: Working Paper
Palavras-chave: International Relations/Trade; Resource /Energy Economics and Policy.
Ano: 1992
URL: http://purl.umn.edu/121364

System Level Economic Analysis of Swine Diet Modifications
Provedor de dados: 31
Autores: Stoecker,   Arthur L.; Lin,   Yi-Hung.
Experimental data from low nitrogen and phosphorus diets (Carter et al, 1999, 2000, 2003) are being used to validate and/or modify the NRC swine growth model. A profit maximizing daily growth model that considers feed costs, excretion, waste management costs, and length of feeding period is being developed.
Tipo: Conference Paper or Presentation
Palavras-chave: Livestock Production/Industries.
Ano: 2005
URL: http://purl.umn.edu/35533

THE AFRICAN GROWTH AND OPPORTUNITY ACT AND THE LATENT AGRICULTURAL EXPORT RESPONSE IN SUB-SAHARAN AFRICA
Provedor de dados: 31
Autores: Nouve,   Kofi; Staatz,   John M.
The African Growth Opportunity Act (AGOA) provides preferential access to Africa's products in US markets. While proponents expect that AGOA will expand Africa's exports to the US, opponents argue that such increases are unlikely, particularly regarding agricultural exports. This paper offers new empirical evidence that is inconclusive regarding the impact of AGOA on African exports to the US.
Tipo: Conference Paper or Presentation
Palavras-chave: Agricultural and Food Policy; International Relations/Trade.
Ano: 2003
URL: http://purl.umn.edu/21917

THE RETURNS TO INVESTMENT IN RESEARCH ON AUSTRALIAN WOOL PRODUCTION
Provedor de dados: 31
Autores: Scobie,   Grant M.; Mullen,   John D.; Alston,   Julian M.
A production function approach is used to estimate growth in farm productivity in the Australian wool industry from an estimated level of expenditure on wool production R &amp; D. A market equilibrium model of the wool industry is then used to measure the share of total benefits from this productivity growth accruing to Australia and its wool growers. A net return is estimated after allowing for lags in the development and adoption of technology.
Tipo: Journal Article
Palavras-chave: Production Economics; Productivity Analysis.
Ano: 1991
URL: http://purl.umn.edu/22764

Two Algorithms for Solving the Walrasian Equilibrium Inequalities
Provedor de dados: 31
Autores: Brown,   Donald J.; Kannan,   Ravi.
We propose two algorithms for deciding if the Walrasian equilibrium inequalities are solvable.  These algorithms may serve as  nonparametric tests for multiple calibration of applied general equilibrium models or they can be used to compute counterfactual equilibria in applied general equilibrium models defined by the Walrasian equilibrium inequalities.
Tipo: Working or Discussion Paper
Palavras-chave: Research Methods/ Statistical Methods.
Ano: 2006
URL: http://purl.umn.edu/28443

CAN EU ENLARGEMENT LEAD TO "IMMISERIZING GROWTH"? AN EMPIRICAL INVESTIGATION
Provedor de dados: 31
Autores: Tokgoz,   Simla.
The possibility of 'immiserizing growth' in the grain sectors of the acceding countries after the EU enlargement is explored. The impact of the enlargement on the EU, new member states, and world grains markets are projected with different technology transfer scenarios, and the net welfare changes in each scenario are computed.
Tipo: Conference Paper or Presentation
Palavras-chave: International Relations/Trade.
Ano: 2004
URL: http://purl.umn.edu/20100

Rural Employment At A Glance
Provedor de dados: 31
Autores: Kusmin,   Lorin D.; Parker,   Timothy S.
Rural Employment At A Glance is a six-page brochure that highlights the most recent indicators of employment and unemployment in rural areas. It documents changes and differences in metro and nonmetro employment growth, unemployment, earnings per job, and occupational mix, as well as differences across nonmetro areas by location and county type.
Tipo: Report
Palavras-chave: Employment; Unemployment; Metro; Nonmetro; Rural; Urban; Earnings; Occupation; Employment growth; Unemployment rate; Community/Rural/Urban Development; Crop Production/Industries.
Ano: 2006
URL: http://purl.umn.edu/59021

The application of trade and growth theories to agriculture: a survey
Provedor de dados: 31
Autores: van Berkum,   Siemen; van Meijl,   Hans.
This article reviews a broad range of theoretical concepts available to explain international trade in agricultural and food products. For many years agricultural trade analyses were largely based on traditional perceptions of comparative advantage following neoclassical theory. Observations of agricultural trade suggest, however, that concepts from modern trade and growth theories are increasingly relevant. This survey demonstrates that many opportunities exist for applying these new theories to the modern food economy.
Tipo: Journal Article
Palavras-chave: International Development; International Relations/Trade.
Ano: 2000
URL: http://purl.umn.edu/117851

A JOINT LIVESTOCK-CROP MULTI-FACTOR RELATIVE PRODUCTIVITY APPROACH
Provedor de dados: 31
Autores: Jones,   Keithly G.; Arnade,   Carlos Anthony.
An output distance function conditional on the expansion of a second output is presented.  These distance functions are used to calculate distinct relative Total Factor Productivity (TFP) scores for two jointly produced products-livestock and crops for 27 countries.  From these, TFP growth and direction of growth are calculated.
Tipo: Conference Paper or Presentation
Palavras-chave: Research Methods/ Statistical Methods.
Ano: 2003
URL: http://purl.umn.edu/35157

AGRICULTURAL RESEARCH AND THE FUTURE OF AMERICAN AGRICULTURE
Provedor de dados: 31
Autores: Ruttan,   Vernon W.
In this paper I first review the sources that have accounted for growth of agricultural production in the past. I then examine the more recent evidence on the contribution of research to growth in agricultural production. Finally, I present some of my own perspectives on issues related to the support for agricultural research and the focus of agricultural research effort over the next several decades.
Tipo: Working or Discussion Paper
Palavras-chave: Research and Development/Tech Change/Emerging Technologies.
Ano: 1980
URL: http://purl.umn.edu/13561

Tests of Independence in Separable Econometric Models: Theory and Application
Provedor de dados: 31
Autores: Brown,   Donald J.; Deb,   Rahul; Wegkamp,   Marten.
A common stochastic restriction in econometric models separable in the latent variables is the assumption of stochastic independence between the unobserved and observed exogenous variables.  Both simple and composite tests of this assumption are derived from properties of independence empirical processes and the consistency of these tests is established.  As an application, we stimulate estimation of a random quasilinear utility function, where we apply our tests of independence.
Tipo: Working or Discussion Paper
Palavras-chave: Research Methods/ Statistical Methods.
Ano: 2006
URL: http://purl.umn.edu/28395

PRODUCTIVITY GROWTH AND CATCHING-UP: IMPLICATIONS FOR CHINA'S TRADE IN LIVESTOCK PRODUCTS
Provedor de dados: 31
Autores: Nin Pratt,   Alejandro; Hertel,   Thomas W.; Foster,   Kenneth A.; Rae,   Allan N.
We develop projections of China's likely meat trade in the year 2010 using a general equilibrium model in conjunction with forecasts of productivity growth rates and macro-economic forecasts. Interestingly, macro-economic uncertainty appears to be more important in driving China's net trade position in meats than is sector-specific supply uncertainty.
Tipo: Conference Paper or Presentation
Palavras-chave: International Relations/Trade.
Ano: 2001
URL: http://purl.umn.edu/20590

Empirical Analysis on Fixed Assets Investment and Income of Rural Household
Provedor de dados: 31
Autores: Zhang,   Lin.
The related literatures were reviewed. According to the data in 1984-2005, the long-run equilibrium relation and causality of household income and fixed assets investment in China were studied empirically. The results showed that the restrictions of income growth on fixed assets investment of household were serious, but fixed assets investment was not the cause of household income growth. Finally, some policy proposals were put forward.
Tipo: Thesis or Dissertation
Palavras-chave: Farmers; China; Fixed assets investment; Income; Co-integration theory; Agricultural Finance; Financial Economics; Research Methods/ Statistical Methods.
Ano: 2009
URL: http://purl.umn.edu/53516

Standardizing anthropometric measures in children and adolescents with new functions for egen
Provedor de dados: 31
Autores: Vidmar,   Suzanna; Carlin,   John B.; Hesketh,   Kylie; Cole,   Tim.
A new function for egen has been developed to allow transformation of child anthropometric data to z-scores using the LMS method and the reference data available from the 1990 British Growth Reference and the 2000 US CDC Growth Reference. An additional function allows for children to be categorized according to body mass index (weight/height2) using international cutoff points recommended by the Childhood Obesity Working Group of the International Obesity Taskforce.
Tipo: Journal Article
Palavras-chave: Z-scores; LMS; Egen; Research Methods/ Statistical Methods.
Ano: 2004
URL: http://purl.umn.edu/116210

Urbanization and Rural development
Provedor de dados: 31
Autores: Molnar,   Melinda.
Urbanization means the growth of the number and size of the towns and the spreading of quality of life in towns (Enyedi, 1996). Naturally the growth and development is different in several parts of the world. On the other hand the urbanization is not only effect to towns. It has also an effect on rural region. Several attendant phenomenons belong to the urbanization (economic development, rural development, infrastructural development etc.). Primary target is to demonstrate the connection between urbanization and rural development.
Tipo: Journal Article
Palavras-chave: Urbanization; Regional development; Rural development; Urban-explosion; Relative deconcentration; Dezurbanization; Urbanization of informatics; Sustainable development; Community/Rural/Urban Development.
Ano: 2008
URL: http://purl.umn.edu/47552

The Local Economic Impacts of Ethanol Plant Expansion: A Missouri Case Study
Provedor de dados: 31
Autores: Altman,   Ira J.; Sanders,   Dwight R.; Johnson,   Thomas G.
Utilizing an input-output approach, this paper reports the local economic impacts from the expansion of an ethanol plant in Missouri. With the expansion ofthe U.S. ethanol industry in the form of both new and expandingplants both types of growth should be taken into account. This research estimates local economic impacts from an expanding ethanol plant as an example of what local impacts can be expected from the on-going growth in the U.S. ethanol industry. The results can have important ramifications for local businesses, grain producers, and property values.
Tipo: Article
Palavras-chave: Financial Economics.
Ano: 2011
URL: http://purl.umn.edu/118953

The Return to Capital in Ghana
Provedor de dados: 31
Autores: Anagol,   Santosh; Udry,   Christopher R.
We show that the real return to capital in Ghana's informal sector is high.  For farmers, we find annual returns ranging from 205-350% in the new technology of pineapple cultivation, and 30-50% in well-established food crop cultivation.  We also examine the relative prices of durable goods of varying durability, and estimate a lower bound to the opportunity cost of capital of 60%.
Tipo: Working or Discussion Paper
Palavras-chave: Financial Economics.
Ano: 2006
URL: http://purl.umn.edu/28417

AN ENERGY STRATEGY BASED ON ENERGY DEDICATED CROPS OR CORN: DIFFERENTIAL ECONOMIC AND REGIONAL IMPACTS
Provedor de dados: 31
Autores: Torre Ugarte,   Daniel de la.
The growth of the role of agriculture as a source of energy feedstock has been primarily concentrated on increasing corn use for ethanol. Alternatively, refocusing this growth in the utilization of dedicated energy crops could prove more advantageous as producers of more crops in a wider geographic area could benefit.
Tipo: Conference Paper or Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2003
URL: http://purl.umn.edu/35165

Land Police and Administration Reform in Mozambique: An Economic View in GDP Growth
Provedor de dados: 31
Autores: Massuanganhe,   Israel Jacob.
The Government of Mozambique (GoM) is attempting to pursue an integrated development policy which will both attract investment capital and increase local income, finances and new structure organization. The Land Policy and land Administration, more that social issue is today a economical issue oriented to the market, and is included in political agenda of the Government. The emphasis is driven to take overview of the future as important tools of the economic growth and development.
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 2002
URL: http://purl.umn.edu/15011

Instructivo técnico del cultivo de Cymbopogon citratus (D.C) Stapf (caña santa)
Provedor de dados: 98
Autores: Soto Ortiz,Rafaela; Vega Marrero,Gilberto; Tamajón Navarro,Aldo Luis.
Tipo: Journal article
Palavras-chave: CULTIVOS AGRICOLAS EXTRACTOS VEGETALES/uso terapéutico SEMILLAS/crecimiento &amp;amp; Desarrollo PLANTAS MEDICINALES/crecimiento &amp;amp; Desarrollo MEDICINA HERBARIA AGRONOMIA CROPS  AGRICULTURAL PLANT EXTRACTS/therapeutic use SEEDS/growth &amp;amp; Development PLANTS  MEDICINAL/growth &amp;amp; Development MEDICINE  HERBAL AGRONOMY.
Ano: 2002
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S1028-47962002000200007

การเจริญเติบโตและผลผลิตของสตรอเบอรี่ในสภาพพื้นที่ปลูกที่มีความสูงต่างๆ กัน
Provedor de dados: 106
Autores: Prapatsorn Riyaphan.
Thesis (M.Sc. in Agriculture)
Tipo: PhysicalObject
Palavras-chave: Strawberry; Fragaria ananassa; Tioga variety; Tochiotome variety; Cropping systems; Cultivars; Elevation; Daughter plant; Length runner; Growth; Yield; Chiangmai province; สตรอเบอรี่; พันธุ์ไทโอกา; พันธุ์โทชิโอโตเมะ; การปลูกพืช; สภาพพื้นที่ปลูก; ระดับความสูง; การเจริญเติบโต; ต้นไหล; ความยาวเส้นไหล; คุณภาพผลผลิต; จ.เชียงใหม่.
Ano: 2005
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5506

การส่งเสริมการเจริญเติบโตของอ้อยด้วยแบคทีเรียละลายฟอสเฟต ในสภาพเรือนทดลอง
Provedor de dados: 106
Autores: Tritanee Yiam-on; Nuntavun Riddech; Prasit Jaisil; Sophon Boonlue.
Tipo: PhysicalObject
Palavras-chave: Sugarcane; Phosphate solubilizing bacteria; PSB; Bacterial isolates; Biofertilizer; Phosphate solubilizing activity; Plant growth promotor; อ้อย; แบคทีเรียละลายฟอสเฟส; จุลินทรีย์; การคัดเลือกจุลินทรีย์; ปุ๋ยชีวภาพ; ปุ๋ยหินฟอสเฟต; การใส่ปุ๋ย; การตอบสนองของพืช; การเจริญเติบโตของพืช.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5828

การงอกและการเจริญเติบโตของเอมบริโอพืชในสกุล Prunus ที่ยังพัฒนาไม่เต็มที่โดยวิธีการเพาะเลี้ยงเอมบริโอ
Provedor de dados: 106
Autores: Nonglak Jeengool.
Thesis (M.Sc. in Agriculture)
Tipo: PhysicalObject
Palavras-chave: Peach; Prunus persica; Nectarine; Plum; Prunus domestica; Plant; Genus Prunus; Embryo; Germination; Growth; Embryo culture technique; Culture media; Woody plant medium; WPM; Brooks and Hough; BH; พีช; เนคทารีน; พลัม; พืช; เอมบริโอ; การงอก; การเจริญเติบโต; การเพาะเลี้ยงเอมบริโอ; อาหารเพาะเลี้ยง; สูตรอาหาร.
Ano: 2003
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5477

อิทธิพลของสารพาโคลบิวทราโซลที่มีต่อการเจริญเติบโต การออกดอก การติดผล ผลผลิต และคุณภาพของผลแอปเปิลพันธุ์ Anna และ Ein Shemer
Provedor de dados: 106
Autores: Phichit Sripinta.
Thesis (M.Sc. in Agriculture)
Tipo: PhysicalObject
Palavras-chave: Apple; Malus domestica; Anna; Ein Shemer; Paclobutrozol; Growth; Flowering; Fruit setting; Yield; Fruit quality; Royal Ang Khang Station; Chiang Mai province; แอปเปิล; พันธุ์; สารพาโคลบิวทราโซล; สารชะลอการเจิรญเติบโต; การเจริญเติบโต; การออกดอก; การติดผล; ผลผลิต; คุณภาพผล; สถานีเกษตรหลวงอ่างขาง; จ.เชียงใหม่.
Ano: 1990
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5512

ผลของการเปลี่ยนแปลงสภาพภูมิอากาศต่อการเจริญเติบโตและผลผลิตของข้าว
Provedor de dados: 106
Autores: Piyapan Srikoom; Nittaya Reunsuk.
The effect of climate change on rice growth and yield had been studied during December, 2010 through March, 2012 at Chiang Rai Rice Research Center, Chiang Rai Province. Experimental design was split plot with three replications. Main plots were planting dates which designed to plant at monthly interval. Sub plots were rice varieties, consisting of Suphan Buri 1 (SPR1), and Suphan Buri 2 (SPR2). Planting method was pre-germinated seed broadcasting with seed rate of 15 kg/rai. The research found that planting in July was appropriate for both SPR1 and SPR2 variety in term of growth, growth duration and yield. Averaged plant heights were 136.4 and 122.3 cm with of SPR1 and SPR2 variety, respectively. The average yields were 827, and 678 kg/rai for SPR1 and...
Tipo: PhysicalObject
Palavras-chave: Global Warming; Climatic change; Growth; Yield; ภาวะโลกร้อน; การเปลี่ยนแปลงสภาพภูมิอากาศ; วันปลูก; ผลผลิต; การเจริญเติบโต.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5591

การเจริญเติบโตของสตรอเบอรี่ระบบการผลิตแบบลอยฟ้าในโรงเรือนแบบระเหยน้ำและมุ้งตาข่าย
Provedor de dados: 106
Autores: Sawitrie Tiwong.
Special Problem (B.S. in Agriculture)
Tipo: PhysicalObject
Palavras-chave: Strawberry; Fragaria ananassa; Cropping systems; Plant production; Sky production system under evaporative cooling system; Net greenhouses; Vegetative growth; Flowers; Thailand; สตรอเบอรี่; พันธุ์โตโยโนกะ; การปลูกพืช; ระบบการผลิตแบบลอยฟ้า; โรงเรือนแบบระเหยน้ำ; มุ้งตาข่าย; การเจริญเติบโตทางก้านใบ; ปริมาณช่อดอก; ผลผลิต; ทรงพุ่ม; ประเทศไทย.
Ano: 2003
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5498

การเจริญเติบโตของผลพลัมญี่ปุ่น (Prunus salicina Lindl.) เหลืองบ้านหลวง, แดงบ้านหลวง, จูหลี่ และ Gulfruby
Provedor de dados: 106
Autores: Wilaiporn Intharasri.
Special Problem (B.S. in Agriculture)
Tipo: PhysicalObject
Palavras-chave: Prunus salicina; Japanese plum; Ban-laung yellow; Ban-luang red; Julie; Gulf rudy; Fruit growth; Fruit size; Fruit firmness; พลัมญี่ปุ่น; พันธุ์เหลืองบ้านหลวง; พันธุ์แดงบ้านหลวง; พันธุ์จูหลี่; พันธุ์กัลฟ์รูบี้; ผลพลัม; การเจริญเติบโตของผล; การวัดการเจริญเติบโต; ขนาดผล; ความหนาเนื้อ; ความแน่นเนื้อ.
Ano: 2000
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5482

ผลของ IBA ต่อการออกรากของกิ่งปักชำพลัมญี่ปุ่น (Prunus salicina Lindl.)ในช่วงเวลาต่างๆ
Provedor de dados: 106
Autores: Umavadee Limsateankun.
Special Problem (B.S. in Agriculture)
Tipo: PhysicalObject
Palavras-chave: Prunus salicina; Japanese plum; Stem cutting; IBA; Indolebutyric acid; Plant growth regulators; Root growth stimulation; พลัมญี่ปุ่น; การปักชำกิ่ง; การขยายพันธุ์; ฮอร์โมนไอบีเอ; สารควบคุมการเจริญเติบโต; การกระตุ้นการเกิดราก.
Ano: 2000
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5489

การศึกษาขนาดของเมล็ดพันธุ์ข้าวโพดหวานอินทรี 2 ที่มีผลต่อการเจริญเติบโตและคุณภาพของฝักสดในฤดูปลูกที่แตกต่างกัน
Provedor de dados: 106
Autores: Thomya Thongluang; Supranee Ngamprasitthi; Thamrongsilpa Pothisoong; Surapol Chowchong; Sangkhae Nawanich.
4 tables
Palavras-chave: Corn; Maize; Seed size; Hybrids; Insee 2; Growth; Quality; Fresh ear yield; ข้าวโพด; ข้าวโพดหวาน; ขนาดเมล็ดพันธุ์; การเจริญเติบโต; ผลผลิต; คุณภาพ; ฤดูปลูก; ชุดดินปากช่อง.
Ano: 2003
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4556

Nutritional Requirements for Growth of Agaricus brasiliensis - doi: 10.4025/actascibiolsci.v33i1.7010
Provedor de dados: 3
Autores: Gaspar Júnior, Pascoal José; Centro Universitário de Formiga - UNIFOR-MG; Tomizawa, Márcia Mayumi; Universidade Federal de Lavras; Schwan, Rosane Freitas; Universidade Federal de Lavras; Rinker, Danny Lee; University of Guelph; Dias, Eustáquio Souza; Universidade Federal de Lavras, Departamento de Biologia, Setor de Microbiologia.
The nutritional requirements of A. brasiliensis in culture media were assessed by supplementing a basal medium (g L-1): (glucose, 10, KH2PO4, 1, MgSO4.7H2O, 0.5, [NH4]2SO4, 1, pH 5.5) with CaCl2, trace elements (FeSO4.7H2O; MnCl2.4H2O; ZnSO4.7H2O; CuSO4.5H2O), casein, yeast extract, peptone, B-vitamins or amino acids. Evaluations were based on the mycelial growth in solid or liquid culture (mm day-1 or mg day-1) and visual analysis of the colony. The addition of CaCl2 and trace elements was very important for the major mycelial growth of the fungi. The addition of casein and inositol to the medium did not have a significant effect on growth. The best growth result in solid medium was obtained with the basal medium plus the addition of yeast extract and...
Tipo: Crescimento micelial, exigências nutricionais
Palavras-chave: 2.12.00.00-9 Mushroom; Trace elements; B-vitamins; Amino acids Microbiologia Mushroom; Trace elements; B-vitamins; Amino acids.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/7010

Effect of liquid poultry manure and injection depth on growth and yield of maize
Provedor de dados: 111
Autores: Manuwa, Seth Idowu; Ademosun, Olugboyega Cornelius; Akande, Lamidi Olawale.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural engineering; Farm power and machinery; Land application of biosolids Injection  liquid poultry manure  maize (Zea mays)  growth  yield.
Ano: 2015
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2784

Sucrose application suppresses infection of the parasitic plant Orobanche ramosa in tomato (Lycopersicon esculentum)
Provedor de dados: 115
Autores: González-Verdejo,Clara I.; Dita,Miguel A.; Nadal,Salvador; Moreno,M. Teresa; Román,Belen.
Orobanche ramosa is an achlorophyllous holoparasitic weed that causes devastating losses in many commercial crops. An experiment was made using sucrose to evaluate its effect on the early growth stages of the parasite. Although O. ramosa germination was not statistically affected by sucrose, the radicle length, the number of attachments sites and the nodules formed decreased significantly.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lycopersicon sculentum; Growth regulation; Parasitism; Sugar.
Ano: 2008
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952008000500003

Phylogenetic analysis of the emergence of main hepatitis C virus subtypes in São Paulo, Brazil
Provedor de dados: 55
Autores: Nishiya,Anna Shoko; Almeida-Neto,César de; Romano,Camila Malta; Alencar,Cecília Salete; Ferreira,Suzete Cleusa; Di-Lorenzo-Oliveira,Claudia; Levi,José Eduardo; Salles,Nanci Alves; Mendrone-Junior,Alfredo; Sabino,Ester Cerdeira.
ABSTRACTBACKGROUND: It is recognized that hepatitis C virus subtypes (1a, 1b, 2a, 2b, 2c and 3a) originated in Africa and Asia and spread worldwide exponentially during the Second World War (1940) through the transfusion of contaminated blood products, invasive medical and dental procedures, and intravenous drug use. The entry of hepatitis C virus subtypes into different regions occurred at distinct times, presenting exponential growth rates of larger or smaller spread. Our study estimated the growth and spread of the most prevalent subtypes currently circulating in São Paulo.METHODS:A total of 465 non-structural region 5B sequences of hepatitis C virus covering a 14-year time-span were used to reconstruct the population history and estimate the population...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth rate; HCV; Phylogenetic analysis; Subtypes.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702015000500473

Effects of growth temperature on polystyrene adhesion of Pseudomonas aeruginosa ATCC 27853
Provedor de dados: 58
Autores: Cappello,Simone; Guglielmino,Salvatore P.P.
The importance of avoiding bacterial adhesion to plastic medical devices is recognized. To better understand the interaction between bacteria and surface, we studied the influence of different growth temperatures (15, 30 and 47ºC) on the polystyrene adhesion capacity of Pseudomonas aeruginosa ATCC 27853.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Pseudomonas aeruginosa; Temperature; Hydrophobicity; Adhesion.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000300001

Growth of the black-lip pearl oyster, Pinctada margaritifera, at nine culture sites of French Polynesia: synthesis of several sampling designs conducted between 1994 and 1999
Provedor de dados: 5
Autores: Pouvreau, Stephane; Prasil, Vincent.
Between 1994 and 1999, several sampling designs were used to measure the growth of the black-lip pearl oyster, Pinctada margaritifera var. cumingi at different sites in French Polynesia. Using a common statistical method, growth data were analysed for nine sites and showed significant geographic variability. Parameters of the Von Bertalanffy model, fitted on the nine data sets, ranged from 147 to 186.5 mm for the H-infinity parameter and from 0.42 to 0.58 year(-1) for the k parameter. The phi parameter (combination of H-infinity and k) provided a ranking classification of growth in these nine sites: growth was low in closed atoll lagoons, such as Takapoto, whereas the island lagoons and ocean habitat supported a very promising shell growth. Calculated on...
Tipo: Text
Palavras-chave: Von Bertalanffy model; Tropical lagoon; Pinctada margaritifera; Pearl oyster; Growth; Modèle de Von Bertalanffy; Lagon tropical; Pinctada margaritifera; Huître perlière; Croissance.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/publication-549.pdf

Comparison of records of baleen plates and of ear plugs in female Fin Whales, Balaenoptera physalus (Linnaeus, 1758)
Provedor de dados: 16
Autores: Utrecht, W.L. van; Utrecht-Cock, C.N. van.
1. From 54 female fin whales chosen at random from a greater number of animals from which data and material were collected during the Antarctic whaling season 1962/1963, records have been made of the baleen plates and the ear plugs. For the records the complete baleen plates including the part of the plates embedded in the gum are used. All ear plugs used for this study were complete and undamaged. 2. According to their ovaries and baleen records 50 animals were sexually mature, 4 animals were sexually immature. 3. In each individual the record of the complete baleen plate is entirely comparable to the record of the ear plug, in its general trend and in the sequence of peaks and hollows. Also the regular cyclic repetition found in the records of the baleen...
Tipo: Article / Letter to the editor
Ano: 1969
URL: http://www.repository.naturalis.nl/record/504679

Influence of harvesting strategy on nutrient supply and production of dairy cows consuming diets based on grass and red clover silage
Provedor de dados: 21
Autores: Kuoppala, Kaisa.
The main objective of this thesis was to elucidate the effects of regrowth grass silage and red clover silage on nutrient supply and milk production of dairy cows as compared with primary growth grass silages.    In the first experiment (publication I), two primary growth and four regrowth grass silages were harvested at two stages of growth. These six silages were fed to 24 lactating dairy cows with two levels of concentrate allowance. Silage intake and energy corrected milk yield (ECM) responses, and the range in these response variables between the diets, were smaller when regrowth silages rather than primary growth silages were fed. Milk production of dairy cows reflected the intake of metabolizable energy (ME), and no differences in the ME utilization...
Tipo: Thesis
Palavras-chave: Feeding and growth.
Ano: 2010
URL: http://orgprints.org/17732/1/kuoppala.pdf

Age et croissance de Pagellus bellottii (Sparidae) des cotes Mauritaniennes
Provedor de dados: 20
Autores: Ould Yarba, L.; Ghorbel, M.; Bouain, A.
The red Pandora Pagellus bellottii is one of the most important demersal species in the fisheries of Mauritanian coasts. Several gears and fleet traditionally exploit it. The studies concerning this fish and particularly those of its age and growth are rare and haven't used the adequate method, which uses hard pieces like scale and vertebra. The objective of the present work is to contribute to the knowledge of the growth parameters of the red Pandora using the scales method not yet used in the studied area. To determine the age and to study the growth of Pagellus bellottii in Mauritanian coasts, we have used the scales of 544 individuals. We have taken, 8 scales under the fin pectoral and we have read the age using a binocular magnifying glass provided...
Tipo: Journal Contribution
Palavras-chave: Pagellus bellottii  Sparidae; Age; Age determination; Growth; Scale reading; Pagellus bellottii; Sparidae; Http://aims.fao.org/aos/agrovoc/c_43241; Http://aims.fao.org/aos/agrovoc/c_43233.
Ano: 2004
URL: http://hdl.handle.net/1834/4245

Dinámica de crecimiento y rendimiento de alfalfa (Medicago sativa L.) en respuesta a diferentes frecuencia de cosecha
Provedor de dados: 32
Autores: Cadena Villegas, Said.
Tesis (Maestría en Ciencias, especialista en Ganadería).- Colegio de Postgraduados, 2009.
Tipo: Tesis
Palavras-chave: Maestría; Ganadería; Alfalfa; Rendimiento; Dinámica de crecimiento; Medicago sativa; Cutting frequency; Herbage yield; Dinamic growth.
Ano: 2009
URL: http://hdl.handle.net/10521/1421

Resource use peak dates distract from real planetary limits
Provedor de dados: 7
Autores: O'Sullivan, Jane N.; School of Agriculture and Food Sciences, The University of Queensland; j.osullivan@uq.edu.au.
Tipo: Peer-Reviewed Insight
Palavras-chave: Limits to growth; Peak-rate year; Synchrony.
Ano: 2015

The application of resilience assessment&amp;#8212;resilience of what, to what, with what? A case study based on Caledon, Ontario, Canada
Provedor de dados: 7
Autores: Liu, Wai Ting; Alumna, Environment and Resource Studies Graduate Program,  University of Waterloo; sellearth@yahoo.com.
Resilience assessment can be used to determine major issues, stakeholders, vulnerabilities, and opportunities of a social&amp;#8211;ecological system to enhance resilience. A resilience assessment was conducted on the Town of Caledon, Ontario between 2010 and 2011 using the Resilience Assessment Workbook for Practitioners (version 1). The assessment explores the following three questions: Resilience of what? Resilience to what? Resilience with what? The answer to the first question describes the history, main issues, and stakeholders of the focal system. The answers to the remaining two questions describe potential resilience threats and assets, respectively. The assessment results include (1) identified resilience threats and assets of Caledon as a...
Tipo: Peer-Reviewed Reports
Palavras-chave: Conflicting interests; Resilience assessment; Resilience assets and threats; Urban growth.
Ano: 2014

Corrigendum to The effect of high concentrations of glycerol on the growth, metabolism and adaptation capacity of Clostridium butyricum DSP1
Provedor de dados: 69
Autores: Szymanowska-Powalowska,Daria.
Tipo: Journal article
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000500011

The use of chitosan in protecting wooden artifacts from damage by mold fungi
Provedor de dados: 69
Autores: El-Gamal,Rehab; Nikolaivits,Efstratios; Zervakis,Georgios I; Abdel-Maksoud,Gomaa; Topakas,Evangelos; Christakopoulos,Paul.
Background: Many buildings in Egypt e.g. museums, mosques and churches, do not possess controlled environments for minimizing the risks of damage of wooden artifacts due to the growth of fungi. Fungal damage usually appears as change in wood color, appearance of stains, and sometimes deformation of wooden surfaces. In this study we focused on the effect that some fungi exert on the properties of wooden artifacts and evaluated the effectiveness of different concentrations of chitosan on their protection against damage by mold fungi. Results: Samples were collected from different monuments and environments, and fungi growing on them were isolated and identified. The isolated Penicillium chrysogenum, Aspergillus flavus and /Aspergillus niger strains were used...
Tipo: Journal article
Palavras-chave: Archeological wood; Chitosan protection; Crystallinity index; Damage of wooden artifacts; Filamentous fungi; FTIR; Fungal damage; Prevention of fungal growth; UV spectrophotometry; Wood deterioration; XRD.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000600011

Bioconversion of mixed free fatty acids to poly-3-hydroxyalkanoates by Pseudomonas putida BET001 and modeling of its fermentation in shake flasks
Provedor de dados: 69
Autores: Makhdum Munawar,Khalil Munawar; Simarani,Khanom; Annuar,Mohamad Suffian Mohamad.
Background: The paper reports on the utilization of palm kernel oil (PKO) as a low cost renewable substrate for medium-chain-length poly-3-hydroxyalkanoates (mcl-PHA) production by Pseudomonas putida BET001. Investigation on the effects of selected key variables on growth, mixed free fatty acids consumption and mcl-PHA production by the bacterial culture in the shaken flask system were carried out along with its kinetic modeling. Results: The biomass production, fatty acids consumption and mcl-PHA production were found favorable when the strain was cultured in mineral medium at pH 6-7,28°C, aeration surface-to-volume ratio of 0.4 x 10(6) m-1, 250 rpm agitation rate for 48 h. Mcl-PHA production by this strain showed mixed growth and non-growth associated...
Tipo: Journal article
Palavras-chave: Biopolymer; Fermentation; Medium-chain-length PHA; Palm kernel oil; Pseudomonas putida.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000100008

Growth of Cunninghamella elegans UCP 542 and production of chitin and chitosan using yam bean medium
Provedor de dados: 69
Autores: Stamford,Thayza Christina Montenegro; Stamford,Tânia Lucia Montenegro; Stamford,Newton Pereira; Barros Neto,Benicio de; Campos-Takaki,Galba Maria de.
Microbiological processes were used for chitin and chitosan productions by Cunninghamella elegans (UCP 542) grown in a new economic culture medium. The assay was carried out to evaluate the growth of C. elegans using yam bean (Pachyrhizus erosus L. Urban) medium, in different times of growth (24, 48, 72 and 96 hrs), incubated at 28ºC in an orbital shaker at 150 rpm. The lyophilized biomass was determined by gravimetry. The polysaccharides were extracted by alkali-acid treatment, and characterized by infrared spectroscopy, titration and viscosity. C. elegans grown in the yam bean medium and produced higher yields of biomass (24.3 g/ mL) in 96 hrs. The high level was chitosan (66 mg/g), and chitin (440 mg/g) were produced at 48 and 72 hrs of growth,...
Tipo: Journal article
Palavras-chave: Biopolymers; Chitin; Chitosan.
Ano: 2007
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582007000100006

Specific nutrient supplementation of defined serum-free medium for the improvement of CHO cells growth and t-PA production
Provedor de dados: 69
Autores: Altamirano,Claudia; Illanes,Andrés; Canessa,Rossana; Becerra,Silvana.
Recombinant CHO TF70R cells are able to grow and produce t-PA on serum-free medium BIOPRO1 (BioWhitaker Europe, Belgium). The purpose of the present study was to determine the effect of medium supplementation with vitamins, lipids, and specific amino acids on cell growth, t-PA production and biological functionality. Among vitamins, only biotin, folic acid, cobalamine and benzoic acid were required for improving growth and t-PA production. Lipid supplement allowed a significant increase cell concentration and t-PA specific activity and concentration, though its specific production rate decreased slightly. Medium supplementation with proline, serine and asparagine had also positive effects on cell growth. Besides, the addition of asparagine (even in the...
Tipo: Journal article
Palavras-chave: Amino acid; Cholesterol; Vitamins.
Ano: 2006
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000100009

SUNFLOWER EMERGENCE AND INITIAL GROWTH IN SOIL WITH WATER EXCESS
Provedor de dados: 70
Autores: Loose,Luis H.; Heldwein,Arno B.; Lucas,Dioneia D. P.; Hinnah,Fernando D.; Bortoluzzi,Mateus P.
ABSTRACT: Sunflower crops are grown in different regions worldwide. However, the stress caused by water excess in the soil impairs this crop growth and yield. The aim of the present study was to determine the response of sunflower plants to long periods of water excess during initial development stages. Water excess treatments were applied at the initial development of these plants at the sowing day, three days after sowing, at plant emergence, and at V2 and V4 stages. The treatments had different duration periods (0, 48, 96, 144, 192, and 240 hours) and were applied at three sowing dates. The current experiment is factorial and was carried out according to a completely random design. Two plant pots, treated under greenhouse conditions, made up the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Helianthus annuus L.; Water stress; Plant emergence; Growth reduction.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000400644

SHADING LEVELS AND PLANT GROWTH REGULATOR FOR FORMATION OF SCHIZOLOBIUM AMAZONICUM COMPACT SEEDLINGS
Provedor de dados: 70
Autores: Binotti,Eliana D. C.; Binotti,Flávio F. da S.; Lucheti,Bruna Z.; Costa,Edilson; Pinto,Adriana H.
ABSTRACT Paricá (Schizolobium amazonicum) can be used for rehabilitation of degraded lands, timber manufacturing markets. However, for its planting, high-quality seedlings should be used. Thus, this study aimed to evaluate the effect of different types of paclobutrazol (PBZ) application and two shading levels on high-quality seedling production. As there was no replication of cultivation environments, we considered each one of them as an experiment. For each environment (35 and 50% shading screen), a completely randomized design was adopted, testing combinations of two types of PBZ application (direct seed immersion in 0.005% PBZ solution; substrate hydration with 0.005% PBZ solution; and 50% seed hydration and 50% substrate hydration; plus, a control),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Protected cultivation; Plant environment; High-quality seedlings; Plant growth reducer; Schizolobium amazonicum.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000500586

GROWTH OF ORNAMENTAL PEPPER IN COLORED CONTAINERS UNDER PROTECTED ENVIRONMENTS
Provedor de dados: 70
Autores: Costa,Edilson; Alixame,Danieli; Silva,Abimael G. da; Pupim,Rafael de S.; Binotti,Flávio F. da S.
ABSTRACT Ornamental pepper plants produced in containers under protected environments have high added value. We carried out research with an aim to evaluate the growth and development of ornamental pepper in containers of different colors under two protected environments, both with thermal-reflective screens under a polyethylene film: one with 18–22 % shading and the other with 42–50 % in colored containers (brown, blue, black, and red). The treatments formed by a 2 × 4 factorial (environments × container colors) were arranged in a completely random pattern with 4 replications and 5 plants per plot, and a joint analysis of experiments was used to compare environments. The protected environment covered with low-density polyethylene film having 42–50 % of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capsicum frutescens; Plant ambiance; Pot colors.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000500581

WATER RELATIONS AT THE INITIAL SUGARCANE GROWTH PHASE UNDER VARIABLE WATER DEFICIT
Provedor de dados: 70
Autores: Mauri,Robson; Coelho,Rubens D.; Fraga Junior,Eusímio F.; Barbosa,Fernando Da S.; Leal,Daniel P. V.
ABSTRACT This study aimed to quantify water deficit levels that compromise sugarcane initial growth exposed to different availability soil depths. The experiment was conducted in a greenhouse by using 100-liter capacity asbestos-cement boxes filled with different soil layers simulating depths of 10, 20, 30, and 40 cm. Water deficit levels were represented by accumulated reference evapotranspiration of 0, 40, 80, 120, 160, 200, 240, and 280 mm, which was considered from planting to irrigation return. Soil moisture at field capacity at planting time was sufficient to promote sprouting and emergence regardless the water deficit level that was subsequently exposed. For soil depths of 10 and 20 cm, a 160-mm water deficit level caused total plant death. On the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Irrigation; Sprouting; Saccharum spp.; Growth.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000200268

Is autotoxicity responsible for inhibition growth of new conspecific seedlings under the canopy of the invasive Acacia dealbata Link?
Provedor de dados: 73
Autores: Aguilera,Narciso; Guedes,Lubia M.; Becerra,José; González,Luis.
ABSTRACT Autotoxicity is a particular form of allelopathy and is suspected to be responsible for regulating intraspecific competition under the Acacia dealbata Link (Fabaceae) canopy. Was established a bioassay with controlled conditions following the natural patterns of plant material accumulation under the A. dealbata canopy to determine the effects of chemical compounds released by leaves, bark, flowers and pods of the invasive species on germination and early growth of conspecific seedlings. Morphological changes caused by A. dealbata plant parts in roots of A. dealbata seedlings grown in natural and controlled conditions were evaluated with scanning electron microscopy. The composition and behavior of the phytotoxicity of litter under the A. dealbata...
Tipo: Journal article
Palavras-chave: Allelopathy; Allelochemicals; Biological invasions; Intraspecific competition; Morphological changes; Non- native range.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432017000100001

Aluminium tolerance in the tropical leguminous N2-fixing shrub Acaciella angustissima (Mill.) Britton &amp;amp; Rose inoculated with Sinorhizobium mexicanum
Provedor de dados: 73
Autores: RINCÓN-ROSALES,REINER; RUÍZ-VALDIVIEZO,VÍCTOR M; MONTES-MOLINA,JOAQUÍN A; GUTIÉRREZ-MICELI,FEDERICO A; DENDOOVEN,LUC.
The tropical legume Acaciella angustissima inoculated with or without Sinorhizobium mexicanum ITTG R7T strain was cultivated in an aluminium (Al) spiked soil to study its tolerance towards this metal. Seedlings of A. angustissima were grown in soil with 0, 2, 4 or 6 mg Al kg-1. The effect of Al and inoculation on growth, nodulation, and nitrogen and tannins content in the plants was monitored. Height and total and dry root weight of plantlets decreased significantly when soil was spiked with Al, but increased when inoculated. Al decreased the number of nodules. Inoculum increased total N and tannin content of the plantlets. It was found that Al reduced the growth of the tropical leguminous N2-fixing shrub A. angustissima, while inoculation with S....
Tipo: Journal article
Palavras-chave: Aluminium tolerance; Plant growth; Nodulation; Nitrogen and tannins content; Sinorhizobium mexicanum ITTG R7T; Soil.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432011000200009

SEASONAL VARIATION IN LEAF LITTER NUTRIENT CONCENTRATIONS OF VALDIVIAN RAINFOREST TREES
Provedor de dados: 73
Autores: Lusk,Christopher H.; Matus,Francisco; Moreno-Chacón,María; Saldaña,Alfredo; Jiménez-Castillo,Mylthon.
Resorption of nutrients from senescing tissues is an important aspect of the nutrient economy of perennial plants, and a major influence on ecosystem nutrient dynamics. Attempts to interpret the adaptive significance of variation in nutrient resorption efficiency have met with little success, leading some scientists to emphasize the need for more work on the biochemical and physiological basis of resorption. One hypothesis suggests than variation in resorption is controlled by sink-source effects within the plant. According to this hypothesis, we might expect resorption to be positively correlated with plant growth rates. This could be expected not only for comparisons among species or populations, but also when comparing conspecific individuals growing at...
Tipo: Journal article
Palavras-chave: Nitrogen; Nutrient cycling; Phosphorus; Plant nutrition; Resorption.
Ano: 2003
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432003000100006

Growth and carcass traits associated with GH1/Alu I and POU1F1/Hinf I gene polymorphisms in Zebu and crossbred beef cattle
Provedor de dados: 74
Autores: Curi,Rogério A.; Palmieri,Darío A.; Suguisawa,Liliane; Oliveira,Henrique N. de; Silveira,Antonio C.; Lopes,Catalina R.
The objectives of the present study were to estimate the allele and genotype frequencies of the GH1/Alu I and POU1F1/Hinf I polymorphisms in beef cattle belonging to different genetic groups and to determine the effects of these polymorphisms on growth and carcass traits in cattle submitted to feedlot management, an intensive production model. Genotyping was performed on 384 animals, including 79 Nellore, 30 Canchim (5/8 Charolais + 3/8 Zebu), 30 Simmental x Nellore crossbred and 245 Angus x Nellore crossbred cattle. Body weight, weight gain, dressing percentage, Longissimus dorsi area and backfat thickness were fitted using the General Linear Model (GLM) procedure of the SAS program and the least square means of the genotypes were compared using the F...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beef cattle; Polymorphisms; Candidate gene; Growth; Carcass.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000100012

Functional abilities of cultivable plant growth promoting bacteria associated with wheat (Triticum aestivum L.) crops
Provedor de dados: 74
Autores: Moreira,Fernanda da S.; Costa,Pedro B. da; Souza,Rocheli de; Beneduzi,Anelise; Lisboa,Bruno B.; Vargas,Luciano K.; Passaglia,Luciane M. P.
Abstract In the pursuit of sustainable agriculture, bioinoculants usage as providers of a crop's needs is a method to limit environmental damage. In this study, a collection of cultivable putative plant growth promoting (PGP) bacteria associated with wheat crops was obtained and this bacterial sample was characterized in relation to the functional diversity of certain PGP features. The isolates were obtained through classical cultivation methods, identified by partial 16S rRNA gene sequencing and characterized for PGP traits of interest. Functional diversity characterization was performed using Categorical Principal Component Analysis (CatPCA) and Multiple Correspondence Analysis (MCA). The most abundant genera found among the 346 isolates were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant growth promoting bacteria; Categorical Principal Component Analysis; Functional analysis; Burkholderia genus.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572016000100111

Insulin-like growth factor II gene Apa I polymorphism is not associated with endometriosis susceptibility
Provedor de dados: 74
Autores: Hsieh,Yao-Yuan; Chang,Chi-Chen; Tsai,Fuu-Jen; Peng,Ching-Tien; Yeh,Lian-Shun; Lin,Cheng-Chieh.
Insulin-like growth factor II (IGF2) has been shown to play a role in abnormal cell growth and carcinogenesis. We investigated if the IGF2 gene Apa I polymorphism at exon 9 was associated with the susceptibility to endometriosis, analyzing 120 women with moderate/severe endometriosis and 103 controls. The genotype frequencies did not differ statistically between the endometriosis (aa = 25.4, ab = 57.4, bb = 17.2%) and control (aa = 20.8 ab = 52.8, bb = 26.4%) groups. The allele frequencies did not differ either: a = 54.1, b = 45.9% among women with endometriosis and a = 47.2, b = 52.8% in the control group. Therefore, no indication was found for an association of this polymorphism with endometriosis susceptibility.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Endometriosis; Insulin-like growth factor; IGF-2.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572004000200006

Genetic trends in the expected progeny difference of the asymptotic weight of Nelore females
Provedor de dados: 74
Autores: Garnero,Analía del Valle; Marcondes,Cintia Righetti; Gunski,Ricardo José; Oliveira,Henrique Nunes de; Lôbo,Raysildo Barbosa.
There are few studies on weight covering the full life cycle of Zebu cattle, and there is no entire growth description or mean growth pattern for animals belonging to this breed. In order to provide such data, 1,158 Nelore females born between 1985 and 1995 were weighed 14,563 times from birth to full growth maturity, in ten herds spread over seven Brazilian states. The Von Bertalanffy, Brody, logistic and Gompertz non-linear models were used to obtain the asymptotic weights (A) and the maturation rates (K). The (co)variance and breeding value components for A and K were obtained by using the multiple trait derivative free restricted maximum likelihood method under the animal model. Genetic trends were calculated in function of the mean expected progeny...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adult weight; Bovine(s); Genetic trends; Maturation rate; Simulation with growth curves.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000400012

Cutis laxa with growth and developmental delay, wrinkly skin syndrome and gerodermia osteodysplastica: a report of two unrelated patients and a literature review
Provedor de dados: 74
Autores: Steiner,Carlos Eduardo; Cintra,Maria Letícia; Marques-de-Faria,Antonia Paula.
Two unrelated patients of different sexes are described, both presenting with congenital redundant skin (cutis laxa), growth deficiency, mental retardation and bone dystrophy. Parental consanguinity in both families and a more pronounced severity of the neurological disease in the male patient were present. Both patients were diagnosed in infancy as having De Barsy syndrome, but clinical follow-up revealed that the clinical picture was compatible with the diagnosis of cutis laxa with growth and developmental delay (CLGDD), gerodermia osteodysplastica (GO) and wrinkly-skin syndrome (WWS). It has recently been suggested that cutis laxa with growth and developmental delay, gerodermia osteodysplastica and wrinkly skin syndrome are the same condition. A review...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cutis laxa; De Barsy syndrome; Gerodermia osteodysplastica; Wrinkly skin syndrome.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000200001

Plant growth-promoting rhizobacteria (PGPR): their potential as antagonists and biocontrol agents
Provedor de dados: 74
Autores: Beneduzi,Anelise; Ambrosini,Adriana; Passaglia,Luciana M.P.
Bacteria that colonize plant roots and promote plant growth are referred to as plant growth-promoting rhizobacteria (PGPR). PGPR are highly diverse and in this review we focus on rhizobacteria as biocontrol agents. Their effects can occur via local antagonism to soil-borne pathogens or by induction of systemic resistance against pathogens throughout the entire plant. Several substances produced by antagonistic rhizobacteria have been related to pathogen control and indirect promotion of growth in many plants, such as siderophores and antibiotics. Induced systemic resistance (ISR) in plants resembles pathogen-induced systemic acquired resistance (SAR) under conditions where the inducing bacteria and the challenging pathogen remain spatially separated. Both...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antagonism; Siderophore; Antibiotic; SAR; ISR.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000600020

Inheritance of rice cold tolerance at the germination stage
Provedor de dados: 74
Autores: Cruz,Renata Pereira da; Milach,Sandra Cristina Kothe; Federizzi,Luiz Carlos.
Cold tolerance during germination is important for ensuring fast and uniform establishment of a rice crop early in the season. However, evaluation of this trait under field conditions is limited by environmental variation, which makes it difficult to identify genetically superior lines. Evaluation of cold tolerance under controlled temperature conditions may be performed by assessing percentage of reduction in coleoptile length and coleoptile growth. Our study determined the inheritance and heritability of cold tolerance at the germination stage in crosses between six rice genotypes. Diallel analysis showed that while both additive and non-additive gene action were involved, the non-additive action was relatively more important for percentage of reduction...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chilling tolerance; Oryza sativa; Rice genetics; Seed germination.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000200020

Selenium biofortification on garlic growth and other nutrients accumulation
Provedor de dados: 75
Autores: Pérez,María B; Lipinski,Víctor Mario; Filippini,María Flavia; Chacón-Madrid,Katherine; Arruda,Marco Aurelio Z; Wuilloud,Rodolfo G.
ABSTRACT Selenium (Se) is an essential element for humans and has anti-cancer function. Garlic can accumulate Se, so it is an option to Se supplementation in the human diet. The aim of this research was to study Se uptake and accumulation during garlic growth. Four doses of Na2SeO4 and Na2SeO3 solution were applied in the substrate (0, 5, 10 and 15 kg ha-1 Se) for one time in August 2014, with a random plot design and 3 replicates on garlic clone Rubi INTA. Three harvests were made, in September, October and December 2014. After each harvest, leaves, bulbs and roots were separated and conditioned (peeled and chopped), lyophilized, and finally acid-digested prior to Se, Mg, Zn, Mn, Cu, Fe, P and S determination by inductively coupled plasma mass...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allium gender sativum; Selenium uptake; Bioaccumulation; Enriched crop.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000300294

Torulaspora globosa: rhizosphere yeast promoting lettuce growth on seedlings and under field conditions
Provedor de dados: 75
Autores: Cabrini,Paloma G; Sala,Fernando C; Magri,Márcia M Rosa.
ABSTRACT Among soil microorganisms, one group stands out as beneficial to agricultural activities: a plant growth-promoting rhizobacteria (PGPM). These microorganisms support plants through phytohormone production, nutrient provision and plant health maintenance. Among these PGPM, yeasts have a high potential, which is still not very well known.This study aimed to evaluate the effect of inoculation with the rhizosphere yeast Torulaspora globosa (strain 5S55) on development of lettuce (cv. Crocantela). The first research consisted of inoculating seeds with yeast (100 cells/seed), and inoculating seeds, 7 and/or 15 days after emergence (DAE) (1x106 cells/plant). The second one consisted of transplanting seedlings from the first experiment to field....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactuca sativa; Plant growth promotion; Biostimulant; Cv. Crocantela.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000300266

Physiological characterization of plant growth in sweet potato
Provedor de dados: 75
Autores: Ferreira,Marcos Aurélio M; Andrade Junior,Valter C; Oliveira,Altino JM; Ferreira,Evander A; Brito,Orlando G; Silva,Lidiane R.
ABSTRACT This research was installed to study plant growth of sweet potato and identify the most favorable harvest time for both roots and the aboveground part (stems). The experiment was carried out at the JK campus of the Federal University of the Vale do Jequitinhonha e Mucuri, in Diamantina, MG, complete blocks at random, with four replications. Three plants in the central part of the experimental plots were collected in twelve consecutive harvests at 15-day intervals. Plants were fractionated in roots, stems, and leaves to determine the dry matter of each part. Leaf area was also measured and growth rates were calculated. Data were analyzed by means of regression. Plants reached the highest dry matter accumulation between 75 and 156 days after...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ipomoea batatas; Physiological indexes; Human diet; Animal feeding; Harvest time.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000100112

Growth and production of basil under different luminosity and water replacement levels
Provedor de dados: 75
Autores: Oliveira,Rívia de Souza Vaz; Salomão,Leandro Caixeta; Morgado,Hélber Souto; Sousa,Cleiton Mateus; Oliveira,Henrique Fonseca E de.
ABSTRACT Basil is used as spice and for medicinal purposes. Its growth is influenced by environmental factors, mainly soil moisture and air temperature. Thus, this study was installed to evaluate growth and production of basil under different levels of luminosity and water replacement. The experimental design was completely randomized, with six replicates, arranged in split plot scheme, with three luminosity levels in the plots (full sun, 50% and 70% shading) and four water replacement levels in the subplots (25, 50, 75 and 100% ETc). We evaluated plant height, stalk diameter, number of leaves and branches, root system volume, the largest root length, fresh and dry mass of roots and leaves. Data were submitted to variance analysis to observe significant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ocimum basilicum; Shading; Water deficit.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000300324

Cuttings of Lippia alba with emphasis on time for seedling formation, substrates and plant growth regulators
Provedor de dados: 75
Autores: Lima,Cristina B; Boaventura,Ana C; Gomes,Marli M.
We aimed to establish the period of time required for seedlings formation, as well as to evaluate the effect of substrates and plant growth regulators in cuttings of L. alba. Three experiments were performed, with statistical designs chosen according to each test objectives. Rooting (%), shoot height (cm), longest root length (cm), leaves number, fresh and dry matter masses (g), were analyzed. The absolute rate of shoot and root system growth, together with the relationship between dry mass of roots and shoots were efficient in predicting the period of greatest speed and accumulation of organic matter in plants. The plant growth regulators favored the vegetative performance of seedlings, with better development 30 days after the cuttings containing mineral...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lippia alba; Propagation; IBA; Rooting.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362015000200015

Nutritional deficiency in crisphead lettuce grown in hydroponics
Provedor de dados: 75
Autores: Petrazzini,Lauro L; Souza,Guilherme A; Rodas,Cléber L; Emrich,Eduardo B; Carvalho,Janice G; Souza,Rovilson J.
The identification of nutrient deficiency symptoms in lettuce helps both producers and technical staff to keep the plant nutritional balance in their producing areas. The objective of this study was to evaluate production and describe and record the visual symptoms caused by the isolated or combined shortage of K, Ca, B and Zn in crisphead lettuce grown in hydroponics. The experimental design was completely randomized blocks with four replications and eight treatments, representing the single (K, Ca, B, Zn) and combined (Ca and B, K and Zn, B and Zn) omission of nutrients, with a control treatment containing a complete nutrient solution. We used the crisphead lettuce cultivar Rider Plus. Under Ca shortage, plant growth was reduced and chlorosis appeared in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactuca sativa; Nutrição mineral; Diagnose visual.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362014000300310

Рост пиленгаса Mugil soiuy Basilewsky,  1855 Mugilidae, Pisces) (Обзор)
Provedor de dados: 13
Autores: Царин, С. А.; Зуев, Г. В.; Болтачев, А. Р.
Tipo: Journal Contribution
Ano: 1999
URL: http://repository.ibss.org.ua/dspace/handle/99011/1269

Простейшие     модели     роста     микроводорослей . 4. Экспоненциальная и линейная фазы роста.
Provedor de dados: 13
Autores: Лелеков, А. С.; Тренкеншу, Р. П.
Предложен подход для анализа экспоненциальной и линейной фаз роста культуры микроводорослей. Модель основана на наличии лимитирующих факторов и их последовательном влиянии на рост при накопительном способе культивирования. Показано, что наличие линейной фазы свидетельствует о лимитировании роста углекислым газом, а продуктивность культуры прямо пропорциональна величине потока С02. Проанализирована точка сопряжения экспоненциальной и линейной фаз.
Tipo: Journal Contribution
Palavras-chave: Limiting factors; Batch culture; Mathematical models; Mathematical models; Http://aims.fao.org/aos/agrovoc/c_24199.
Ano: 2007
URL: http://repository.ibss.org.ua/dspace/handle/99011/610

Рост и продукция японской устрицы  (Crassostrea gigas Thunberg), акклиматизируемой в Черном море
Provedor de dados: 13
Autores: Золотницкий, А. П.; Монина, О. Б.
Tipo: Journal Contribution
Ano: 1992
URL: http://repository.ibss.org.ua/dspace/handle/99011/1515

Влияние поровой воды на развитие микроводорослей песчаных пляжей одесского побережья
Provedor de dados: 13
Autores: Гаркуша, О. П.
Tipo: Journal Contribution
Ano: 2009
URL: http://repository.ibss.org.ua/dspace/handle/99011/2340

Влияние температуры на интенсивность обмена и скорость роста изоподы Sphaeroma serratum Fabr.
Provedor de dados: 13
Autores: Аболмасова, Г. И.
Tipo: Journal Contribution
Ano: 1987
URL: http://repository.ibss.org.ua/dspace/handle/99011/1771

Изучение роста и размножения пелагических копепод Черного моря в ИнБЮМ НАН Украины
Provedor de dados: 13
Autores: Сажина, Л. И.
Tipo: Journal Contribution
Ano: 1996
URL: http://repository.ibss.org.ua/dspace/handle/99011/1364

Рост, выживаемость и химический состав личинок тюрбо (Sсophthalmus maximus L.) при  интенсивном выращивании в «чистой» и «зеленой» воде
Provedor de dados: 13
Autores: Ханайченко, А. Н.; Планас, М. И.; Карнеро, С. Д.
Проведено  сравнение роста, выживаемости и' химического  состава личинок  тюрбо (Scophthalmus maximus) в первые две недели развития при интенсивном выращивания в «чистой» и «зеленой» (внесение смеси микроводорослей Tetraselmis suecica  и Isochrysis galbana) воде и питании (последовательно) коловратками и науплиями артемий.
Tipo: Journal Contribution
Ano: 2000
URL: http://repository.ibss.org.ua/dspace/handle/99011/1180

Relative growth and sexual maturity of the freshwater shrimp Palaemon pandaliformis (Crustacea, Palaemonidae) in northeastern of Brazil (Canavieiras, Bahia)
Provedor de dados: 76
Autores: Paschoal,Lucas R. P.; Guimarães,Fernanda J.; Couto,Erminda C. G.
This study comprises the description of relative growth and sexual maturity of a population of Palaemon pandaliformis Stimpson, 1871 in Salsa River (Northeastern Brazil). Samples were collected monthly between September 2009 and August 2010. Females were larger, heavier, and showed a greater allometric coefficient (b) than male specimens. Only carapace length vs. pleura length in females presented a significant difference in the relative growth pattern, indicating a puberty moult. This relationship is strictly correlated to reproduction and its success rate in female shrimps. Estimated carapace length in 50% of mature females (CL50) was 4.53 mm. It was not possible to compare obtained CL50 results due to a lack of studies on this species. Comparison was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caridea; Allometric growth; Morphometric relationships.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212013000100004

Polyphasic growth in fish: a case study with Corydoras paleatus (Siluriformes, Callichthyidae)
Provedor de dados: 76
Autores: Barradas,José R. S.; Lermen,Isabel S.; Larré,Gabriel G.; Martins,Thaís P.; Fontoura,Nelson F.
ABSTRACT A weight-length relationship was established for Corydoras paleatus (Jenyns, 1842) (Siluriformes, Callichthyidae) (n=596) from samples taken in November-December 2009 and March-April 2010, in Pinguela Lagoon (29°46'57"S; 50°11'16"W), Rio Grande do Sul, Brazil. The species showed a polyphasic allometric growth pattern, each stanza described by an independent power equation controlled by a switch function: W = a1Lb1 ∙ (1 + eRsc ∙ (L-SCP))-1 + a2Lb2 ∙ [1 - (1 + eRsc ∙ (L-SCP))-1] ; where W is the expected weight for a specific length L, a1 and a2 are the proportionality coefficients for stanzas 1 and 2, b1 and b2 are the allometric coefficients for stanzas 1 and 2, Rsc is the stanza changing rate for the switch function and SCP is the stanza changing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometric growth; Length at first maturity; Reproduction; Sexual maturity; Length-weight relationship.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212016000100217

Shape and size variations of Aegla uruguayana (Anomura, Aeglidae) under laboratory conditions: A geometric morphometric approach to the growth
Provedor de dados: 76
Autores: Diawol,Valeria P.; Giri,Federico; Collins,Pablo A.
Crustacean growth studies typically use modal analysis rather than focusing on the growth of individuals. In the present work, we use geometric morphometrics to determine how organism shape and size varies during the life of the freshwater crab, Aegla uruguayana Schmitt, 1942. A total of 66 individuals from diverse life cycle stages were examined daily and each exuvia was recorded. Digital images of the dorsal region of the cephalothorax were obtained for each exuvia and were subsequently used to record landmark configurations. Moult increment and intermoult period were estimated for each crab. Differences in shape between crabs of different sizes (allometry) and sexes (sexual dimorphism; SD) were observed. Allometry was registered among specimens;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crustacea; Cephalothorax; Ontogeny; Intermoult; Morphometrics.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212015000100076

Compactação do solo: consequências para o crescimento vegetal.
Provedor de dados: 14
Autores: SA, M. A. C. de; SANTOS JUNIOR, J. de D. G. dos.
ABSTRACT: Soil compactation is problem in modern agriculture. Over cultivation, intensive cropping and inappropriate soil management leads to soil compactation. There are important factors which directly affect plant growth, such as water, oxygen, temperature and mechanical resistance to seedling emergence or root growth. By the way, factors indirectly affecting plant growth are soil physical attributes, such as bulk density, texture, aggregation, aggregate stability and pore size distribution. To identify compact layers in soil, trench assessment, bulk density, relative bulk density or compactness degree and penetrometer evaluations can be used. But, these methods request knowledge about other soil attributes for a correct interpretation of analytical...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Compactação do Solo; Crescimento; Manejo do Solo; Planta; Densidade de Plantio.
Ano: 2005
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/569996

Are growth and density quantitative indicators of essential fish habitat quality? An application to the common sole Solea solea nursery grounds
Provedor de dados: 5
Autores: Gilliers, Camille; Le Pape, Olivier; Desaunay, Yves; Morin, Jocelyne; Guerault, Daniel; Amara, Rachid.
Bio-indicators were measured on juvenile fish to assess the quality of eight coastal and estuarine nursery grounds in the Eastern English Channel and in the Bay of Biscay during 3 years. Growth (size and otolith daily increment width), body condition (morphometric index) and abundance of juvenile common soles were analysed together with xenobiotic concentrations (heavy metals and organic contaminants).   Condition indices displayed important variations and did not allow relevant estimation of environmental quality. On the contrary, growth and density indicators showed good steadiness above years but varied among sites. In spite of difficulties of interpreting these indicators on such a meso-scale approach, analyses highlighted the estuaries of Seine and...
Tipo: Text
Palavras-chave: Flatfish juvenile; Essential fish habitat quality; Quantitative bio indicators.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-2016.pdf

Long-term changes in density, population structure and growth rate of Tellina tenuis from Dublin Bay, Ireland
Provedor de dados: 5
Autores: Wilson, Jg.
Changes in the Tellina tenuis population in Dublin Bay, Ireland since 1977 are described. Population density at the monitoring site increased from 260 m(-2) (although a maximum density of 548 m(-2) was found nearby) in 1977 to a peak of 434 m(-2) in 1989. Densities recently have been the lowest recorded, around 170 m(-2). These changes do not seem to have been associated with any change in elevation of the site. The population structure has changed considerably, from one dominated by larger, older animals in 1977, when there did not seem to have been any significant recruitment for the previous two years, to one in which recruitment, if not in any great numbers, has at least been more or less regular, with the last two years (1993 and 1994) showing the...
Tipo: Text
Palavras-chave: Tellina tenuis; Long-term; Population; Growth; Ireland.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00093/20396/18063.pdf

Multiple growth-correlated life history traits estimated simultaneously in individuals
Provedor de dados: 5
Autores: Mollet, Fabian M.; Ernande, Bruno; Brunel, Thomas; Rijnsdorp, Adriaan D.
We present a new methodology to estimate rates of energy acquisition, maintenance, reproductive investment and the onset of maturation (four-trait estimation) by fitting an energy allocation model to individual growth trajectories. The accuracy and precision of the method is evaluated on simulated growth trajectories. In the deterministic case, all life history parameters are well estimated with negligible bias over realistic parameter ranges. Adding environmental variability reduces precision, causes the maintenance and reproductive investment to be confounded with a negative error correlation, and tends, if strong, to result in an underestimation of the energy acquisition and maintenance and an overestimation of the age and size at the onset of...
Tipo: Text
Ano: 2010
URL: http://archimer.ifremer.fr/doc/2010/publication-7386.pdf

Study of nutritional requirements and growth of penaeus merguiensis in tanks by means of purified and artificial diets
Provedor de dados: 5
Autores: Cuzon, G.; Febvre, A.; Melard, J.; Parker, G.; Fagnoni, G.; Calvas, J.; Griessinger, J.m.; Hatt, P.; Poullaouec, G.; Le Bitoux, J.f.; Martin, J.l.; Michel, A.
One of the criteria for selecting a shrimp of commercial interest in French Polynesia is the acceptability of artificial diet; such a criterion has been used to test Penaeus merguiensis.Experiments have been carried out in Centre Océanologique du Pacifique in Tahiti island where the water temperature range is 25-29°C, salinity 35 ppt, pH. 8.2, and photoperiod constant.Juveniles used in this study are hatched in CNEXO-COP at Vairao.It has been found that a 50-55% protein content diet gives a better growth performance. A carbohydrate such as starch appears more suitable than glucose or glucose plus starch in isonitrogenous purified diets.A vitamin mix rich in vitamin C, choline and inositol provides better results and a mineral mix with 3% magnesium reaches...
Tipo: Text
Palavras-chave: Histoire Ifremer.
Ano: 1979
URL: http://archimer.ifremer.fr/doc/1979/publication-5272.pdf

Growth and mortality of the European oyster Ostrea edulis in the Bay of Arcachon (France)
Provedor de dados: 5
Autores: Robert, René; Borel, Michel; Pichot, Yves; Trut, Gilles.
A study of the growth and mortality of the European oyster Ostrea edulis , including the effects of Marteilia refringens and Bonamia ostreae , was carried out in three oceanic areas in the Bay of Arcachon from May 1989 to February 1991. One-year-old spat, free from disease were used for the trials. Six months after beginning the trials, Marteilia refringens had severely infested the cultures. Although Bonamia ostreae was found during the first year, the rate of infestation was low. In the second year bonamiasis increased and high mortality (&gt; 60%) occurred in Ostrea edulis populations. Although the growth of the oysters was good, their condition index was generally poor. Moreover, shell perforations by Polydora sp. were observed. The influence of...
Tipo: Text
Palavras-chave: Ostrea edulis; Pathologie; Mortalité; Croissance; Reproduction; Composition biochimique; Bassin Arcachon; Ostrea edulis; Pathology; Mortality; Growth; Reproduction; Gross biochemical composition; Bay of Arcachon.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/00015/12600/9477.pdf

Age estimation and growth of some deep-sea fish from the northeast Atlantic ocean
Provedor de dados: 5
Autores: Allain, Valerie; Lorance, Pascal.
Age is a necessary parameter used in population dynamics to assess the state of exploited resources. This parameter is poorly known for most deep-sea species (depth &gt; 400 m). This work focused on age estimation from otoliths of Alepocephalus bairdii (Alepocephalidae), Coryphaenoides rupestris (Macrouridae), Helicolenus dactylopterus (Sebastidae) and Hoplostethus atlanticus (Trachichthyidae), which French fishery exploitation, off the west coasts of the British Isles, began the late 1980's. Considering otolith growth zones as annual, the four species all show high longevity: 38, 54, 43 and 130 years, respectively, together with slow growth. The differences in growth between sex were estimated and difficulties in accurately estimating the age were...
Tipo: Text
Palavras-chave: Alepocephalus bairdii; Coryphaenoides rupestris; Helicolenus dactylopterus; Hoplostethus atlanticus; ANE; Slope fish; Age estimation; Otoliths.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/00000/10396/7690.pdf

In situ growth potential of the subtidal part of green tide forming Ulva spp. stocks
Provedor de dados: 5
Autores: Merceron, Michel; Antoine, Virginie; Auby, Isabelle; Morand, P.
Ulva spp., the algae most responsible for green tides in Brittany (France), are found on the foreshore and in the most beachward wave area (MBWA) of many bays during green tide phenomena. These algae have recently been seen drifting at greater depths (reaching -20 m). In view of the significant quantities of algae found at these depths, and the less favorable conditions for algal growth than in the intertidal zone, we attempted to determine if they could grow there. For that, during their maximum growth period (from May to July), algae were picked up at three stations located on the foreshore, in the MBWA and in the subtidal (deep) zones of the Bay of Douarnenez, and their nitrogen, carbon and chlorophyll a+b contents were determined, and their...
Tipo: Text
Palavras-chave: Nutrients; Irradiance; Photosynthesis; Ulva sp.; Algal blooms; Eutrophication.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-3527.pdf

Magnetic resonance imaging as a means to assess the body growth and the gonad development of the oyster Crassostrea gigas
Provedor de dados: 5
Autores: Hatt, Philippe-jacques; Davenel, Armel; Eliat, Pierre-antoine; Quellec, Stephane.
To make a preliminary exploration of the possibilities and limits of magnetic resonance imaging (MRI) for assessing body growth and gonad development of the Pacific oyster, Crassostrea gigas, individual monitoring was conducted on diploid and triploid oysters in their second year, maintained from February to October in a pond on the French Atlantic coast. Magnetic resonance imaging was done on each oyster on five dates during the study period. From these images, variations in the volumes of the flesh, digestive gland-gonad and adductor muscle, and the surface of the gills were measured over time. Apart from the well known differences between diploids and triploids related to maturation of gametes, other original observations of assessing growth were made...
Tipo: Text
Palavras-chave: Crassostrea gigas; Oyster; Gonad development; Growth; Magnetic resonance imaging; MRI.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6872.pdf

Croissance et indice de condition de l'huître plate Ostrea edulis élevée en mer et en étang sur la côte méditerranéenne
Provedor de dados: 5
Autores: Paquotte, Philippe; Moriceau, Jacques.
A monitoring of the growth and condition index of the flat oyster Ostrea edulis has been conducted in the Thau Lagoon and in open sea off the Cap d'Agde. Between April and November, its growth is greater in open sea than in the lagoon. In winter, the growth doesn't stop in open sea, but one needs to get away from mussel collection in practicing seabed farming. In these conditions, the oyster's growth, throughout the year, is very close in open sea and in lagoons whereas the condition index is higher in open sea.
Tipo: Text
Palavras-chave: Méditerranée; Mer ouverte; Etang de Thau; Indice de condition; Croissance; Ostrea edulis.
Ano: 1986
URL: http://archimer.ifremer.fr/doc/1986/acte-6188.PDF

High levels of vegetable oils in plant protein-rich diets fed to gilthead sea bream (Sparus aurata L.): growth performance, muscle fatty acid profiles and histological alterations of target tissues
Provedor de dados: 5
Autores: Benedito Palos, L; Navarro, J; Sitja Bobadilla, A; Bell, J; Kaushik, Sadasivam; Perez Sanchez, J.
The feasibility of fish oil (FO) replacement by vegetable oils (VO) was investigated in gilthead sea bream (Sparus aurata L.) in a growth trial conducted for the duration of 8 months. Four isolipidic and isoproteic diets rich in plant proteins were Supplemented with L-lysine (0-55%) and soya lecithin (1%). Added oil was either FO (control) or a blend of VO, replacing 33% (33VO diet), 66% (66VO diet) and 100% (VO diet) of FO. No detrimental effects on growth performance were found with the partial FO replacement, but feed intake and growth rates were reduced by about 10% in fish fed the VO diet. The replacement strategy did not damage the intestinal epithelium, and massive accumulation of lipid droplets was not found within enterocytes. All fish showed...
Tipo: Text
Palavras-chave: Lipoid liver disease; Soya lecithin; Phospholipids; Essential fatty acids.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-4780.pdf

Climatic Constraints on Growth Rate and Geochemistry (Sr/Ca and U/Ca) of the Coral Siderastrea stellata in the Southwest Equatorial Atlantic (Rocas Atoll, Brazil)
Provedor de dados: 5
Autores: Evangelista, H.; Sifeddine, A.; Correge, T.; Servain, J.; Dassie, E. P.; Logato, R.; Cordeiro, R. C.; Shen, C. -c.; Le Cornec, F.; Nogueira, J.; Segal, B.; Castagna, A.; Turcq, B.
Although relatively rare compared to similar latitudes in the Pacific or Indian Oceans, massive coral colonies are present in the Tropical/Equatorial Southwestern Atlantic Ocean. However, detailed geo-chemical compositions of these corals are still largely unknown. In this work, we present growth rates, Sr/Ca, and U/Ca ratios of the coral colony (Siderastrea stellata) sampled at Rocas Atoll, off the Brazilian coast. These variables are primarily affected by sea surface temperature (SST) at seasonal scale, and by wind stress at interannual scale, these results represent a broad new finding. A lower significance at the interannual time scale between Sr/Ca and U/Ca with respect to SST is attributed to the low SST amplitude closed to Equator. An investigation...
Tipo: Text
Palavras-chave: Coral; Siderastrea stellata; Rocas Atoll; ITCZ; Equatorial Atlantic; Wind stress.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00623/73552/73796.pdf

Differential influence of life cycle on growth and toxin production of three   Pseudo-nitzschia   species (Bacillariophyceae)
Provedor de dados: 5
Autores: Sauvey, Aurore; Claquin, Pascal; Le Roy, Bertrand; Le Gac, Mickael; Fauchot, Juliette.
We used a multi‐strain approach to study the intra‐ and interspecific variability of the growth rates of three Pseudo‐nitzschia species – P. australis, P. fraudulenta, and P. pungens – and of their domoic acid (DA) production. We carried out mating and batch experiments to investigate the respective effects of strain age and cell size, and thus the influence of their life cycle on the physiology of these species. The cell size ‐ life cycle relationship was characteristic of each species. The influence of age and cell size on the intraspecific variability of growth rates suggests that these characteristics should be considered cautiously for the strains used in physiological studies on Pseudo‐nitzschia species. The results from all three species do not...
Tipo: Text
Palavras-chave: Cell size; Domoic acid; Growth; Life cycle; Pseudo-nitzschia strains.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00505/61679/65622.pdf

Application of a dynamic energy budget model to the Pacific oyster, Crassostrea gigas, reared under various environmental conditions
Provedor de dados: 5
Autores: Pouvreau, Stephane; Bourles, Yves; Lefebvre, Sebastien; Gangnery, Aline; Alunno-bruscia, Marianne.
The Dynamic Energy Budget (DEB) model (Kooijman, S.A.L.M., 1986. Energy budgets can explain body size relations. J. Theor. Biol. 121, 269¿282; Kooijman, S.A.L.M., 2000. Dynamic Energy and Mass Budgets in Biological Systems. Cambridge University Press, Cambridge, 424 pp.) has been adapted to describe the dynamics of growth and reproduction of the Pacific oyster (Crassostrea gigas) reared in different areas under conditions ranging from controlled to natural. The values of the model parameters were estimated from available physiological data and from published information. The sets of data used to validate the model came from three long-term growth experiments (&gt; 5 months) performed on Pacific oysters reared under different conditions of food and...
Tipo: Text
Palavras-chave: Reproductive effort; Reproduction; Growth; Ecophysiology; Dynamic energy budget; Crassostrea gigas.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1817.pdf

Fishes from the Bay of Biscay : Growth curve (weight and size) and sexual maturity
Provedor de dados: 5
Autores: Leaute, Jean-pierre; Mahe, Kelig.
Tipo: Text
Ano: 2008
URL: http://archimer.ifremer.fr/doc/00019/13053/10091.pdf

Calcein and manganese experiments for marking the shell of the common cockle (Cerastoderma edule): tidal rhythm validation of increments formation
Provedor de dados: 5
Autores: Mahe, Kelig; Bellamy, Elise; Lartaud, Franck; De Rafelis, Marc.
This work focuses on investigating the potential of calcein and manganese as growth markers of the common cockle (Cerastoderma edule) in the bay of Somme (France). Recapture of shells, previously marked using a chemical marking and then bred in natural conditions, was performed in order to determine the shell growth patterns. Calcein marking has shown a fluorescent increment in shells after only 30 min immersion time at 150 mg L-1, but also for shells immersed 3 h at 50 mg L-1. Likewise, manganese shell marking was revealed under cathodoluminescence for shells immersed 1 h at 120 mg L-1 as well as for shells which spent 4 h at 90 mg L-1. A numerical analysis performed on each marked cockles has revealed 23 micro-increments between the mark and the ventral...
Tipo: Text
Palavras-chave: Calcein; Manganese; Marking; Cathodoluminescence; Shellfish; Cerastoderma edule.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00025/13649/10758.pdf

Age et croissance de l'oursin Paracentrotus lividus Lamarck, 1816 (Echinodermata-Echinoidea) dans le golfe de Tunis (Méditerranée)
Provedor de dados: 5
Autores: Sellem, Fériel; Langar, Habib; Pesando, Danielle.
The age of Paracentrotus lividus in the gulf of Tunis was evaluated by analysing the natural growth banding in the interambulacral plates from the oral part of the test. It appeared that growth rates increased in spring and summer, and decreased in autumn and winter. The maximum age and diameter were estimated to be 8 years and 53 mm respectively, Compared to populations of Paracentrotus lividus from NW Mediterranean and Atlantic, that of the gulf of Tunis presented a more rapid growth.
Tipo: Text
Palavras-chave: Méditerranée; Oursin comestible; Âge et croissance; Mediterranean sea; Sea urchin; Age and growth.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/00323/43384/42830.pdf

Effects of dissolved mercury on embryogenesis, survival and growth of Mytilus galloprovincialis mussel larvae
Provedor de dados: 5
Autores: Beiras, R; His, Edouard.
The effects of Hg concentrations ranging from 0 (control) to 1024 mu g l(-1) upon embryogenesis, survival and growth of Mytilus galloprovincialis mussel larvae were investigated. Embryogenesis was abnormal in 50% of the individuals at 10 mu g l(-1). The 48 h LC(50) for D-shaped, early umbonate, late umbonate and eyed larvae were 51, 164, 322 and 383 pg l(-1) respectively. The LC(50) was an allometric function of ash-free dry weight with exponent b = 0.60. Larval growth was significantly reduced after 6 d exposure to 4 mu g Hg l(-1) and after 10 d exposure to 2 mu g l(-1). No significant differences in lethal or sublethal sensitivity to Hg were found between M. galloprovincialis and previously studied Crassostrea gigas embryos and larvae. The implications...
Tipo: Text
Palavras-chave: Mercury; Mytilus; Mussel; Larva; Growth; Embryo; Bioassay; Ecotoxicology.
Ano: 1995
URL: http://archimer.ifremer.fr/doc/00258/36946/35665.pdf

The development of the data system and growth in data sharing
Provedor de dados: 5
Autores: Pouliquen, Sylvie; Hankin, Steve; Keeley, Robert; Blower, Jon; Donlon, Craig; Kozyr, Alex; Guralnick, Robert.
Tipo: Text
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00029/14041/11234.pdf

Variability of key biological parameters of round sardinella Sardinella aurita and the effects of environmental changes
Provedor de dados: 5
Autores: Balde, Bocar Sabaly; Sow, Fambaye N.; Ba, Kamarel; Ekau, Werner; Brehmer, Patrice; Kantoussan, Justin; Fall, Massal; Diouf, Malick.
We examined growth rates and reproductive characteristics of Sardinella aurita off Senegal and other coastal areas over a 20 year period (1995-2014) to determine how they relate to variations in environmental characteristics of coastal waters. Based on fish length-frequency data and a coastal upwelling index, we found that S. aurita recruitment tends to occur during the periods of most intensive upwelling (March-April off Senegal). Peak reproduction corresponds to periods of low sea-surface temperature (in February or March). The sex ratio was remarkably consistent during the 30 year study period and so was not affected by environmental changes. We hypothesise that S. aurita takes advantage of the higher zooplankton productivity that occurs in coastal...
Tipo: Text
Palavras-chave: Data poor fisheries; Environmental variability; Size structure; Small pelagic; Spawning period; West Africa.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00491/60229/67183.pdf

Phased oscillations in cell numbers and nitrate in batch cultures of Alexandrium tamarense (Dinophyceae)
Provedor de dados: 5
Autores: Collos, Yves; Hadjadji, Imene; Plisson, Benoit; Cecchi, Philippe; Laabir, Mohamed; Bechemin, Christian; Masseret, Estelle.
Alexandrium tamarense (M. Lebour) Balech strains isolated in spring 2007 from a single bloom in Thau lagoon have been grown in nonaxenic artificial media. For three strains showing large oscillations in biomass (crashes followed by recoveries) on a scale of several days, a significant relationship was observed between changes in cell densities (as in vivo fluorescence) and changes in nitrate concentrations. Increases in cell densities were accompanied by decreases in nitrate, while decreases in cell densities corresponded to increases in nitrate, presumably due to nitrification. Net increases in nitrate could reach up to 15 mu mol N . L(-1) . d(-1) indicating a very active nitrifying archaeal/bacterial population. However, following population crashes,...
Tipo: Text
Palavras-chave: Alexandrium tamarense; Archaea; Bacteria; Decay; Growth; Nitrate; Nitrification; Oscillations.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00049/16046/13585.pdf

Ecological energy requirements of the green mussel, perna viridis linnaeus from ennore estuary, madras
Provedor de dados: 5
Autores: Shafee, Ms.
Ecological energies of growth and respiration were computed for individuals of the tropical intertidal green mussel, Perna viridis L. from Ennore estuary Madras for the period 1974-1975.Von Bertalanffy growth curve was fitted to data obtained from rearing marked animals in the field. Perna viridis has a higher rate of growth than all other mussels studied so far.Growth efficiency was computed for mussels of various sizes and the values were 56, 41, 32 and 19% for 2, 40, 80 and 120 mm sized mussels respectively. [NOT CONTROLLED OCR]
Tipo: Text
Ano: 1979
URL: http://archimer.ifremer.fr/doc/1979/publication-5270.pdf

Antiproliferative Activity of Cyanophora paradoxa Pigments in Melanoma, Breast and Lung Cancer Cells
Provedor de dados: 5
Autores: Baudelet, Paul-hubert; Gagez, Anne-laure; Berard, Jean-baptiste; Juin, Camille; Bridiau, Nicolas; Kaas, Raymond; Thiery, Valerie; Cadoret, Jean-paul; Picot, Laurent.
The glaucophyte Cyanophora paradoxa (Cp) was chemically investigated to identify pigments efficiently inhibiting malignant melanoma, mammary carcinoma and lung adenocarcinoma cells growth. Cp water and ethanol extracts significantly inhibited the growth of the three cancer cell lines in vitro, at 100 mu g.mL(-1). Flash chromatography of the Cp ethanol extract, devoid of c-phycocyanin and allophycocyanin, enabled the collection of eight fractions, four of which strongly inhibited cancer cells growth at 100 mu g.mL(-1). Particularly, two fractions inhibited more than 90% of the melanoma cells growth, one inducing apoptosis in the three cancer cells lines. The detailed analysis of Cp pigment composition resulted in the discrimination of 17 molecules, ten of...
Tipo: Text
Palavras-chave: Pigments; Microalgae; Cyanophora paradoxa; Melanoma; Cancer; Apoptosis; Zeaxanthin; Cryptoxanthin.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00177/28818/27289.pdf

Response to unintentional selection for faster development associated with inbreeding depression in Crassostrea gigas larvae, resulting from a broodstock selective breeding plan
Provedor de dados: 5
Autores: Taris, Nicolas; Batista, Frederico; Marissal, Eric; Boudry, Pierre.
Direct and indirect consequences of selective breeding in marine bivalves still remain largely unexplored. For species with two-phase life cycle, like the Pacific oyster (Crassostrea gigas), most studies have focused on juvenile and adult stages, but relatively few have focused on juvenile and adult stages, but relatively few have considered the larval stage, especially in a domestication context. We assessed the impact of hatchery practices on larval traits, notably on larval growth (due to the culling of slow growing larvae), by the study of larval progenies. Larvae originating from crosses using parental oysters both from natural beds and from hatchery broodstock which had been selected for adult growth and shell shape for seven generations. A set of...
Tipo: Text
Palavras-chave: Inbreeding depresion; Larvae stage; Genetic variability; Hatchery; Domestication; Genetic; Crassostrea gigas; Oyster.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/acte-3337.pdf

Effects of a storage at -2°C/-3°C before retail displaying on the qualities of smoked salmon
Provedor de dados: 5
Autores: Beaufort, Annie; Bourdin, Graziella; Lebail, Alain; Cardinal, Mireille.
Chilling is a technology consisting in storing smoked salmon at -2°C/-3°C during several weeks before retail displaying. This approach is an important point for controlling production and retail chain logistics. In agro-food industry, cold storage is made either at positive temperature in order to slow down the growth of bacteria or at negative temperature (freezing) in order to stop the growth of bacteria. Storing food between 0°C and the freezing point is an alternative and the results on microbial and sensorial qualities have been investigated in a research program aiming at : - highlighting determinant factors for the growth of Listeria monocytogenes (L.m): salt content, cold stiffening before slicing, kinetic characteristics of the strain, chilling...
Tipo: Text
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/acte-3983.pdf

Estimation of Age, Growth and Fishing Season of a Palaeolithic Population of Grayling (Thymallus thymallus) Using Scale Analysis
Provedor de dados: 5
Autores: Guillaud, Emilie; Elleboode, Romain; Mahe, Kelig; Bearez, Philippe.
The fish remains sampled from archaeological sites are generally the result of human food refuse; therefore, the study of retrieved fish scales may provide reliable information on the season of capture and on paleoclimate and paleoenvironmental changes. Among Western European freshwater fishes, the grayling, Thymallus thymallus¸ has the most easily recognizable scales and is a commonly recovered species from Paleolithic contexts. This study, therefore, is based on the growth pattern analysis of modern and archaeological scales from grayling specimens. The modern specimens were collected monthly in France (n = 22), Switzerland (n = 16), Finland (n = 20) and Sweden (n = 10). Scale growth patterns were measured using numerical analysis to a high accuracy. The...
Tipo: Text
Palavras-chave: France; Le Taillis des Coteaux; Marginal increment analysis; Scales; Scalimetry; Sclerochronology; Thymallus thymallus; Upper Paleolithic.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00379/48992/49436.pdf

Effects of upwelling duration and phytoplankton growth regime on dissolved oxygen levels in an idealized Iberian Peninsula upwelling system
Provedor de dados: 5
Autores: Bettencourt, João H.; Rossi, Vincent; Renault, Lionel; Haynes, Peter; Morel, Yves; Garçon, Véronique.
We apply a coupled modelling system composed of a state-of-the-art hydrodynamical model and a low complexity biogeochemical model to an idealized Iberian Peninsula upwelling system to identify the main drivers of dissolved oxygen variability and to study its response to changes in the duration of the upwelling season and in phytoplankton growth regime. We find that the export of oxygenated waters by upwelling front turbulence is a major sink for nearshore dissolved oxygen. In our simulations of summer upwelling, when phytoplankton population is generally dominated by diatoms whose growth is largely enhanced by nutrient input, net primary production and air-sea exchange compensate dissolved oxygen depletion by offshore export over the shelf. A shorter...
Tipo: Text
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00516/62747/67135.pdf

Effects of petroleum biodegradation products on phytoplankton growth.
Provedor de dados: 5
Autores: Goutx, H; Berland, B; Leveau, M; Bertrand, J.
The effects of products resulting from petroleum biodegradation in continuous culture, have been studied on the growth of two marine algae. Sugars, lipids and amino acids are the main components resulting from petroleum degradation in the bacteria used medium. Their concentrations are respectively 600 mg.l super(-1), 46 mg.l super(-1) and 74.2 mu M.l super(-1). The algae growth is inhibited when products are enough concentrated; it is stimulated by low concentration. Among these products, lipids are more toxic than others. The two species show different sensitivity towards the used medium. Prorocentrum micans growth is more inhibited than that of Phaeodactylum tricornutum .
Tipo: Text
Palavras-chave: Bacteria; Phytoplankton; Toxicity; Oil pollution; Crude oil; Biodegradation.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-1017.pdf

Approche de la capacité trophique d'un écosystème conchylicole
Provedor de dados: 5
Autores: Heral, Maurice; Deslous-paoli, Jean-marc; Prou, Jean.
After a short bibliographical study of the different approaches for determination of the trophic capacity of a bay for molluscs culture, the authors, with a global mode, show the relations between the growth performance of the oysters Crassostrea gigas in relation with the cultivated stocks. The volumes of consumed and assimilated food are calculated for the stocks in relation with the incoming volumes of water in the bay and the residence time for neap tide and spring tide. The authors find a decrease of growth rate in relation with the volume of consumed food. When it is above 60% and when the volume of assimilated food is above 20%, there is a large decrease of the growth of oysters.
Tipo: Text
Palavras-chave: Crassostrea gigas; Oysters; Stock assessment; Models; Food consumption; Growth; Biomass; Stock cultivé; Biomasse; Croissance; Modèle; Crassostrea gigas; Huîtres; Capacité trophique.
Ano: 1988
URL: http://archimer.ifremer.fr/doc/1988/acte-3834.PDF

Economic and Environmental Impacts of Improving Growth Rate and Feed Efficiency in Fish Farming Depend on Nitrogen and Density Limitation
Provedor de dados: 5
Autores: Besson, Mathieu; Komen, H; Vandeputte, Marc; Aubin, Joel; De Boer, I J M; Van Arendonk, J A M.
The aim of fish breeding is to increase profit by producing faster growing fish with lower feed intake. However, little is known about the economic and environmental impacts of selective breeding programs for fish. We modelled a fish farm producing African catfish in a Recirculating Aquaculture System (RAS) to calculate economic values of growth rate and feed efficiency with production limited by fish density in rearing tanks and fish nitrogen emission. We also calculated “environmental values” with Life Cycle Assessment. The economic and environmental values of growth rate and feed efficiency depended on the limiting factor. When nitrogen was the limiting factor, economic and environmental values of growth rate were zero. But, on the other hand, feed...
Tipo: Text
Palavras-chave: Economic values; Environmental impacts; Fish farming.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00205/31641/30046.pdf

Effect of xanthan on the growth of sulphate-reduction bacteria in marine sediments.
Provedor de dados: 5
Autores: Battersby, N; Stewart, D; Sharma, A.
Chemical additives are used extensively in the offshore oil industry. For secondary oil recovery, the biopolymer xanthan has been recommended as a viscosifying agent but its use may provoke microbial problems. The effect of adding xanthan to marine sediments on the growth and metabolic activity of sulphate-reducing bacteria (SRB) was studied. In all instances, its addition resulted in an increasing in SRB numbers of up to 250-fold. This was accompanied by a marked increase in the electron transport activity of the sediments when these were incubated under either aerobic or anaerobic conditions. The products formed as a result of the biodegradation of the polymer by indigenous heterotrophic bacteria in these sediments appear to have acted as suitable...
Tipo: Text
Palavras-chave: Bacteria; Growth; Additives; Pollution effects; Oil recovery; Biodegradation; Polymers; Sediment pollution; Sulfate reduction.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-1015.pdf

Theory of turbid microalgae cultures.
Provedor de dados: 5
Autores: Martinez, Carlos; Mairet, Francis; Bernard, Olivier.
Microalgae can be cultivated in closed or open photobioreactors (PBR). In these systems, light rapidly decreases as it passes through the culture due to the turbidity of the medium. Thus, microalgae experiment different light intensities depending on their position in the medium. In this paper, we study theoretically how the growth rate of microalgae is affected by different factors; incident light intensity, form of the PBR, microalgae population density, turbidity of non-microalgae components, and light path-length of the reactor. We show that for different types of PBR the average growth rate is completely determined by the incident light intensity and the optical depth. In the case of vertical cylindrical PBRs illuminated from above (e.g. race-way or...
Tipo: Text
Palavras-chave: Photobioreactor; Optical depth; Photoinhibition; Light limitation; Turbidity; Modelling.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00450/56133/57675.pdf

Exploitation, éléments de croissance et de dynamique du stock de coquilles Saint-Jacques (Pecten maximus, L.) des Pertuis Charentais
Provedor de dados: 5
Autores: Blanchard, Fabian.
Tipo: Text
Palavras-chave: Bay of Biscay; Pecten maximus; Growth; Exploitation; Stock assesment.
Ano: 1995
URL: https://archimer.ifremer.fr/doc/1995/rapport-523.pdf

Les Sars Deplodus sargus (Linne 1758) du Golfe du Lion: croissance et caracteristiques des debarquements aux criees de Sete et du Grau-du-Roi.
Provedor de dados: 5
Autores: Man-wai, Rabenevanana; Quignard, Jean-pierre.
Age and growth of seabream D. sargus in the Gulf of Lions (Mediterranean Sea) were examined using scale reading. Growth was expressed by the von Bertalanffy's equation based on the estimation of total lengths at the time of annual ring formation. The growth in weight and the length-weight relationship were calculated for both sexes separately and combined during and after spawning periods. Preliminary investigations on the characteristics of commercial catches (from Sete and Grau-du-Roi commercial fishing grounds) were also carried out.
Tipo: Text
Palavras-chave: Diplodus sargus; Sparidae; Pisces; Fishing grounds; Spawning; Fishery biology; Age determination; Fish catch statistics; Length weight relationships; Scale reading; Growth.
Ano: 1982
URL: http://archimer.ifremer.fr/doc/1982/publication-1845.pdf

Possible link between prey quality, condition and growth of juvenile hake (Merluccius merluccius) in the Gulf of Lions (NW Mediterranean)
Provedor de dados: 5
Autores: Harmelin Vivien, Mireille; Mahe, Kelig; Bodiguel, Xavier; Mellon, Capucine.
The energy value of the main prey and the growth of juvenile hake in the Gulf of Lions were analysed to determine whether fish condition could be linked to difference in prey quality and resulted in growth difference. Large differences in energy content (15.6 to 23.6 kJ g(-1) DW) among prey types were recorded with low values found in amphipods and natantid shrimps, intermediate values in euphausiids and mysids, and high values in fish. High condition in juvenile hake was linked to the consumption of prey with high energy content. However, no difference in fish growth was observed by the analysis of otolith micro-increments.
Tipo: Text
Palavras-chave: Merluciidae; Merluccius merluccius; Hake; Mediterranean Sea; Energy; Condition; Otolith microstructure.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00092/20332/18611.pdf

The food limitation hypothesis for juvenile marine fish
Provedor de dados: 5
Autores: Le Pape, Olivier; Bonhommeau, Sylvain.
Coastal zones are productive areas that serve as nursery grounds for a large number of marine species. However, the processes involved in survival success during the juvenile phase are not well-known. Some authors suggest that the availability of prey is important to support the production of pre-recruit fish whose fitness is enhanced through optimal feeding conditions. Accordingly, recruitment is limited by the carrying capacity of the nursery habitat. In contrast, other authors state that the carrying capacity of the nursery grounds is not fully exploited, suggesting that there is no effect of food limitation. This study combines an overview of the literature, focused on flatfish that are especially dependent on coastal and estuarine nursery grounds, an...
Tipo: Text
Palavras-chave: Estuaries and coasts; Food limitation; Habitat functionality; Juvenile fish growth; Size-dependent mortality; Trophic capacity of nursery habitat.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00164/27542/25712.pdf

Effects of dietary linoleic and linolenic acids on growth of prawn
Provedor de dados: 5
Autores: Kanazawa, A; Teshima, S; Tokiwa, S; Ceccaldi, Hj.
Tipo: Text
Ano: 1979
URL: http://archimer.ifremer.fr/doc/00122/23356/21183.pdf

Morphometry and growth of a Bivalve : the common cockle, Cerastoderma edule in the Bay of Somme
Provedor de dados: 5
Autores: Bellamy, Elise; Mahe, Kelig; Lefebvre, Alain.
Cockle (Cerastoderma edule) growth has not been studied a lot yet and the current approach of counting external ridges in order to make age estimation is limited. Nevertheless, growth is a key parameter for the monitoring of bivalve populations, which are heavily exploited in French estuaries. This morphometric study is based on the analysis of cockles shells collected in the Bay of Somme. This site, which has an area of 70 km², is located in the eastern Channel in the north of France, and is one of the most important French cockles fields.  This analysis is part of a study of the dynamic of cockles stocks in the Bay of Somme, which shows sharp inter-annual abundance fluctuations. High-resolution pictures analysis were performed with the TNPC software...
Tipo: Text
Ano: 2008
URL: http://archimer.ifremer.fr/doc/00011/12269/9055.pdf

Sea-temperature anomalies and population dynamics variations : effects on growth and density of three bivalves
Provedor de dados: 5
Autores: Menesguen, Alain; Dreves, Luc.
The demographic structure of stable populations is usually modelled by a simple exponential decay mode. For 3 mollusc species, this model has been improved by taking inlo account monthly sea-temperature anomalies calculated on a 20 yr daily temperature chronicle. For the 3 species examined, Tapes rhomboïdes, Glycymeris glycymeris and Spisula ovalis, from the southern part of the Western English Channel, only temperature anomalies during the 2 mo following the major spawning period were positively eorrelated with density anomalies, probably in eonneetion with larval stage sensitivity. Comparison of temperature anomalies and mean annual growth va riability suggests an apparent positive effeet of temperature during autumn or winter months, significant for T....
Tipo: Text
Ano: 1987
URL: http://archimer.ifremer.fr/doc/00155/26639/24880.pdf

Bioaccumulation of metals in sediment elutriates and their effects on growth, condition index, and metallothionein contents in oyster larvae
Provedor de dados: 5
Autores: Geffard, A; Geffard, O; Amiard, J; His, Edouard; Amiard Triquet, C.
The bioavailability of Cd, Cu, Zn, and Pb from two metal-contaminated sediments (Bidassoa and Dunkerque) was studied using Crassostrea gigas larvae exposed to sediment elutriates. The metal contents within the sediments, the larvae and larval growth, the condition index, and the induction of metallothionein in the larvae were measured. The larval growth and condition index were only affected after exposure to the highest elutriates concentration (5 to 25%) from the most contaminated sediment (Dunkerque). Bioaccumulation of all metals was observed in larvae exposed to Dunkerque elutriatre; only Cu bioaccumulation was observed in the Bidassoa elutriate. The results from larvae exposed to both sediment elutriates show a strong correlation between...
Tipo: Text
Palavras-chave: Metallothionein; Metal bioaccumulation; Larval growth; Crassostrea gigas larvae; Sediment elutriates.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-4748.pdf

Water quality, feed intake and growth in European seabass (Dicentrarchus labrax L.) in relation to water renewal rate
Provedor de dados: 5
Autores: Lemarie, Gilles; Toften, Hilde.
Tipo: Text
Ano: 2002
URL: http://archimer.ifremer.fr/doc/00134/24534/22566.pdf

On Growth Rate of Wind Waves: Impact of Short-Scale Breaking Modulations
Provedor de dados: 5
Autores: Kudryavtsev, Vladimir; Chapron, Bertrand.
The wave generation model based on the rapid distortion concept significantly underestimates empirical values of the wave growth rate. As suggested before, inclusion of the aerodynamic roughness modulations effect on the amplitude of the slope-correlated surface pressure could potentially reconcile this model approach with observations. This study explores the role of short-scale breaking modulations to amplify the growth rate of modulating longer waves. As developed, airflow separations from modulated breaking waves result in strong modulations of the turbulent stress in the inner region of the modulating waves. In turn, this leads to amplifying the slope-correlated surface pressure anomalies. As evaluated, such a mechanism can be very efficient for...
Tipo: Text
Palavras-chave: Atm; Ocean Structure; Phenomena; Atmosphere-ocean interaction.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00313/42414/41759.pdf

Comparative analysis of phylogenetic and fishing effects in life history patterns of teleost fishes
Provedor de dados: 5
Autores: Rochet, Marie-joelle; Cornillon, Pierre-andré; Sabatier, Robert; Pontier, Dominique.
The effects of fishing on life history traits and life history strategies of teleost fishes are analysed by a new comparative method that splits traits into an allometric part (size effect), an autoregressive phylogenetic component, and an environmental component (fishing effect). Both intra- and inter-specific variation of age and size at maturity, fecundity, adult size and egg size are analysed by comparing 84 populations of 49 species submitted to various fishing pressures. Two axes of life history diversification are found among teleosts. One is the well-known slow-fast continuum separating short-lived and early maturing species (like Clupeiformes) From longer-lived species that mature late relative to their size and spawn larger eggs (like salmonids...
Tipo: Text
Palavras-chave: Stocking; Recreational fisheries; Habitat rehabilitation; Freshwater fisheries; Ecosystem management; Angling.
Ano: 2000
URL: https://archimer.ifremer.fr/doc/2000/publication-667.pdf

Aspects morphologiques et dynamiques de constructions de l'Annelide polychete Sabellaria alveolata (Linne).
Provedor de dados: 5
Autores: Gruet, Yves.
The study is illustrated by photographs, consideration being given to the stages in the establishment of colonies on shells and pebbles. Stages of implantation and the types of construction thereby formed are described, and the process of growth in height examined. Implantation of other individuals, hydrodynamics, tube density, temperature and age or average sizes of the population are thought to influence this growth. The surface area occupied by the constructions may be extended by colonization of pebby or shelly areas or by transportation of parts broken away. Destruction and death of the constructions may be extended by colonization of pebby or shelly areas the constructions is described. It was found that the reefs underwent a particular mode of...
Tipo: Text
Palavras-chave: Colonization; Morphological and dynamic aspects; Sabellaria alveolata; Constructions.
Ano: 1972
URL: http://archimer.ifremer.fr/doc/1972/publication-2061.pdf

Notes on the biology of the bigeye scad, Selar crumenophthalmus (Carangidae) around Reunion Island, southwest Indian Ocean
Provedor de dados: 5
Autores: Roos, David; Roux, Olivier; Conand, François.
The main characteristics of the biology of bigeye scad were studied from commercial fishery catches around Reunion Island. Biometric relationships were calculated. The monitoring of size distribution, aggregated by month, allowed us to estimate the theoretical growth equation using the ELEFAN software. The von Bertalanffy growth parameters were adjusted with a seasonal modulation: L8 = 265 mm; K = 1.64 year-1; c = 0.068; ? = 0.38. The growth of the cohort was quite high during the austral summer (November-April) and decreased during the austral winter (May-October). The arrival of a new cohort with homogeneous small sizes (65 to 90 mm) in the fishery in November coincided with the disappearance of large individuals. A feature of the reproductive biology...
Tipo: Text
Palavras-chave: Indian Ocean; Reunion Island; Growth; Reproduction; Selar crumenophthalmus; Carangidae.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-2335.pdf

Does coastal lagoon habitat quality affect fish growth rate and their recruitment? Insights from fishing and acoustic surveys
Provedor de dados: 5
Autores: Brehmer, Patrice; Laugier, Thierry; Kantoussan, J.; Galgani, Francois; Mouillot, D.
Ensuring the sustainability of fish resources necessitates understanding their interaction with coastal habitats, which is becoming ever more challenging in the context of ever increasing anthropogenic pressures. The ability of coastal lagoons, exposed to major sources of disturbance, to provide resources and suitable habitats for growth and survival of juvenile fish is especially important. We analysed three lagoons with different ecological statuses and habitat quality on the basis of their eutrophication and ecotoxicity (Trix test) levels. Fish abundances were sampled using fishing and horizontal beaming acoustic surveys with the same protocols in the same year. The relative abundance of Anguilla anguilla, Dicentrarchus labrax or the Mugilidae group was...
Tipo: Text
Palavras-chave: Fish; Shallow water; Ecotoxicity; Lagoon; Habitat quality; Amphidromous.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00148/25963/24083.pdf

Phytoplankton seasonal dynamics in a Mediterranean coastal lagoon: emphasis on the picoeukaryote community
Provedor de dados: 5
Autores: Bec, Béatrice; Husseini Ratrema, Julie; Collos, Yves; Souchu, Philippe; Vaquer, André.
The dynamics of the phytoplankton community were investigated in a marine coastal lagoon (Thau, NW Mediterranean) from February 1999 to January 2000. Dilution experiments, chlorophyll a (Chl a) size-fractionation and primary production measurements were conducted monthly. Maximum growth and microzooplankton grazing rates were estimated from Chl a biomass fractions to separate pico- from nano- and microphytoplankton and by flow cytometry to distinguish between picoeukaryotes and picocyanobacteria. In spring, the phytoplankton community was dominated by Chaetoceros sp. and Skeletonema costatum, which represented most of biomass (B) and primary production (P). Nano- and microphytoplankton growth was controlled by nutrient availability and exceeded losses due...
Tipo: Text
Palavras-chave: Coastal lagoon; NW Mediterranean; Picoeukaryote; Phytoplankton.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/publication-726.pdf

Effects of dissolved mercury on embryogenesis, survival, growth of Mytilus galloprovincialis mussel larvae
Provedor de dados: 5
Autores: Beiras, Ricardo; His, Edouard.
The effects of Hg concentrations ranging from 0 (control) to 1024 µg 1-1 upon embryogenesis, survival and growth of Mytilus galloprovincialis mussel larvae were investigated . Embryogenesis was abnormal in 50 % of the individuals at 10µg 1-1. The 48 h LC50 for D-shaped, early umbonate, late umbonate and eyed larvae were 51, 164, 322 and 383 µg 1- 1 respectively. The LC50 was an allometric function of ash-free dry weight with exponent b = 0.60. Larval growth was significantly reduced alter 6 d exposure to 4 µg Hg 1-1 and alter 10 d exposure to 2 µg 1-1. No significant differences in lethal or sublethal sensitivity to Hg were found between M. galloprovincialis and previously studied Crassostrea gigas embryos and larvae. The implications of these findings for...
Tipo: Text
Palavras-chave: Mercury; Mytilus galloprovincialis; Mussel; Larvae; Growth; Embryonic development; Bioassay; Ecotoxicology.
Ano: 1995
URL: http://archimer.ifremer.fr/doc/00037/14868/12192.pdf

Domestication modifies behaviour of first generation of domesticated abalone
Provedor de dados: 5
Autores: Roussel, Sabine; Bish, Thomas; Day, Rob; Boudry, Pierre; Huchette, Sylvain; Lambert, Christophe; Lachambre, Sébastien.
The domestication of Haliotis tuberculata began recently. During this domestication process, abalone may acquire behavioural and physiological traits to become more adapted to their captive environment. These modifications could be the result of intentional selection on production traits, or of unintentional selection due to specific conditions experienced in the farm environment. In order to study this process, progenies of 3 different broodstock origins were studied. Wild abalone, farmed abalone selected for faster growth at 5% selection pressure and randomly selected farmed abalone were used as broodstock. Farmed abalone were the third generation of abalone resulting from systematic mating between wild and farmed broodstock (either males or females were...
Tipo: Text
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00404/51546/52138.pdf

Response of Listeria monocytogenes to liquid smoke
Provedor de dados: 5
Autores: Guilbaud, Morgan; Chafsey, Ingrid; Pilet, Marie-france; Leroi, Francoise; Prevost, Herve; Hebraud, Michel; Dousset, Xavier.
Aims: To investigate the effect of liquid smoke on growth, survival, proteomic pattern and haemolytic potential of Listeria monocytogenes.   Methods and Results: Growth and survival curves were recorded in brain-heart infusion broth supplemented with three concentrations of liquid smoke. L. monocytogenes growth was inhibited in the presence of 15 mu g ml(-1) phenol while a rapid decrease in cell viability occurred in the presence of 30 mu g ml(-1) phenol. The proteome of L. monocytogenes cytosoluble proteins was slightly modified after 2-h incubation with 30 mu g ml(-1) phenol but no protein already characterized in response to other known stresses was induced, except the protease ClpP. Liquid smoke inhibited the haemolytic potential without affecting hly...
Tipo: Text
Palavras-chave: Survival; Stress; Proteome analysis; Listeria monocytogenes; Liquid smoke; Haemolysis.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-4522.pdf

Growth and reproduction of the deep-sea brittlestar ophiomusium-lymani-wyville-thomson
Provedor de dados: 5
Autores: Gage, Jd; Tyler, Pa.
Tipo: Text
Ano: 1982
URL: http://archimer.ifremer.fr/doc/00121/23192/21037.pdf

Diffusion parameters of grain-growth inhibitors in WC based hardmetals with Co, Fe/Ni and Fe/Co/Ni binder alloys
Provedor de dados: 5
Autores: Buchegger, Christoph; Lengauer, Walter; Bernardi, Johannes; Gruber, Jakob; Ntaflos, Theo; Kiraly, Franz; Langlade, Jessica.
The diffusion behaviour of the grain-growth inhibitors (GGI) Cr and V during early sintering stages from 950-1150 °C was investigated by means of diffusion couples of the type WC-GGI-binder/WC-binder. Besides Co, also alternative Fe/Ni and Fe/Co/Ni binder alloys were investigated. It was found that the diffusion in green bodies differs significantly from sintered hardmetals. Diffusivities in the binder phase were determined from diffusion couples prepared from model alloys and were found to be almost equal for Co and alternative binder alloys. The diffusion parameters determined from green bodies allowed to estimate the GGI distribution in a hardmetal during heat up. This was subsequently used to estimate an appropriate grain size of VC and Cr3C2 in...
Tipo: Text
Palavras-chave: Hardmetal; Early sintering stage; Grain-growth inhibitor; Diffusion; Alternative binder.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00194/30491/28896.pdf

How Does Protein Malnutrition or Food Deprivation Interfere with the Growth of the Epiphyseal Plate in Animals?
Provedor de dados: 77
Autores: da Silva,Karina de Carvalho; Silva,Camilla Rodrigues de Souza; Costa,Rita de Cássia da Silva; de Moraes,Sílvia Regina Arruda.
the aim of this study was to conduct a literature review of impacts of protein malnutrition and/or early food deprivation on the formation of the growth plate in young animals. A search was performed using the databases PubMed/MEDLINE, LILACS, SciELO and the Cochrane Library, without language restrictions or any limit as to year. Initially, 150 articles were identified, however, after application of the inclusion and exclusion criteria only five remained. In three studies the nutritional stress was due to protein malnutrition, another due to fasting and the fifth was due to food restriction. All the studies had some methodological omissions. The studies included in this review-demonstrated corroboration in the results obtained, regardless of whether the...
Tipo: Journal article
Palavras-chave: Epiphyseal plate; Bone growth; Protein malnutrition; Food deprivation.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000200037

Immunohistochemical Study of Amelogenin and Lysosome-Associate Membrane Proteins (LAMPs) in Cartilage
Provedor de dados: 77
Autores: Hatakeyama,Yuji; Hatakeyama,Junko; Oka,Kyoko; Tsuruga,Eichi; Inai,Tetsuichiro; Anan,Hisashi; Sawa,Yoshihiko.
Amelogenin is one of the enamel matrix proteins secreted by ameloblasts during enamel formation in tooth development. Recent studies showed that the amelogenin is expressed in chondrocyte. Lysosome-associated membrane proteins (LAMPs) have been identified as binding partner proteins to amelogenin and it has been suggested they act as signaling receptors of amelogenin. The purpose of this study is to clarify the localization of amelogenin and LAMPs in growth plate cartilage and cartilaginous nodules in micromass culture. Mouse knee joints including tibia growth plate at 4 weeks old and micromass cultures of limb bud mesenchymal cells after 2 weeks were fixed in paraformaldehyde, routinely processed, sections were cut and immunostained with amelogenin,...
Tipo: Journal article
Palavras-chave: Amelogenin; Lysosome-associated membrane proteins (LAMPs); Chondrogenesis; Cartilage.
Ano: 2014
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000200040

Morphological and Biochemical Changes of Salmonella hadar Exposed to Aqueous Garlic Extract
Provedor de dados: 77
Autores: Belguith,H; Kthiri,F; Ben Ammar,A; Jaafoura,H; Ben Hamida,J; Landoulsi,A.
The effect on Salmonella hadar growth was investigated using fresh sterile liquid medium (Pronadisa, Hispanlab) containing aqueous garlic extract (AGE) at different concentration (0, 11, 12, and 13 mg/ml). The garlic extract added at these final concentrations had a bacteriostatic effect on Salmonella hadar. The effect of these bacteriostatic concentration of AGE on the growth of the tested serovar, revealed a pattern of inhibition characterized by: (i) a transitory inhibition phase whose duration was proportional to AGE concentration (ii) a resumed growth phase which showed a lower rate of growth than in uninhibited controls, and (iii) an entry into stationary phase at a lower culture density. The minimal inhibitory concentration and minimum bactericidal...
Tipo: Journal article
Palavras-chave: Allium sativum; Allicin; Antimicrobial effects; Garlic; Salmonella hada; Ultrastructure.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000300013

Maternal Malnutrition Diet During Lactation Period Leads to Incomplete Catch-Up Growth in Femur of the Pups at Adulthood
Provedor de dados: 77
Autores: Babinski,Monique S. D; Ramos,Cristiane F; Fernandes,Rodrigo M. P; Cardoso,Gilberto P; Babinski,Marcio A.
The aim of this study was to evaluate the effects of maternal protein and energy restriction during lactation, analyzing on morphological dimensions whether there was catch-up growth through normative nutrition restored, as well as on mechanical axis of femur of the offspring at adulthood. At parturition, Wistar rat dams were randomly assigned to the following groups: 1) control group (C) - free access to a standard laboratory diet containing 23 % protein, 2) protein-energy restricted group (PER) - free access to an isoenergetic, protein-restricted diet containing 8 % protein, and 3) energy-restricted group (ER) ­ fed with restricted amounts of a standard laboratory diet. At weaning, all pups were separated of dams and received free access to a standard...
Tipo: Journal article
Palavras-chave: Rats; Femur; Undernutrition; Growth; Morphometry.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000100011

Inhibition of the Processes of Growth and Differentiation in the Embryonic Development of the Axolotl (Ambystma mexicanum)
Provedor de dados: 16
Autores: Stolk, Anth.
The problem of the retardation of the processes of growth and differentiation is certainly as important as the processes of growth and differentiation themselves. It is striking, therefore, that whereas the analysis of growth has been carried out for a considerable period of time already, the analysis of inhibition was only commenced a few decades ago. It has to be admitted that Wiesner (1894) succeeded in demonstrating the presence of a substance retarding germination in the slime of the mistletoe (Viscum album), but this remained a solitary observation for some time. About 1920 a series of important publications appeared which deal with inhibiting substances. Oppenheimer (1922) discovered a substance of this kind in the fruit pulp of ripe tomatoes,...
Tipo: Article / Letter to the editor
Ano: 1954
URL: http://www.repository.naturalis.nl/record/504839

First report on large scleractinian (Cnidaria: Anthozoa) accumulations in cold-temperate shallow water of south Chilean fjords
Provedor de dados: 16
Autores: Försterra, G.; Häussermann, V.
South Chilean fjords contain an astonishing diverse benthic macrofauna of which anthozoans form a major portion. Azooxanthellate solitary scleractinians, which were hitherto known from major depths, were found as shallow as 8 m during several expeditions to the south Chilean fjord region. At some sites, stony corals dominate the macrofauna and form dense aggregations, which may cover several 10’s of square meters in depths below 25 m. The discovery of these communities in shallow water for the first time allows for in situ observations and structural analysis of these populations by means of SCUBA diving. For further studies, living and dead corals were sampled, photographed, and dried for preservation. Several specimens and tissue samples were preserved...
Tipo: Article / Letter to the editor
Palavras-chave: Azooxanthellate solitary corals Desmophyllum dianthus Caryophyllia fjords; Chile benthos cold-temperate waters shallow water 42.79.
Ano: 2003
URL: http://www.repository.naturalis.nl/record/220299

Finite Predation Rate: a Novel Parameter for the Quantitative Measurement of Predation Potential of Predator at Population Level
Provedor de dados: 17
Autores: Hsin Chi; De-Fen Mou; Hossein Allahyari; Jih-Zu Yu; Yu-Bing Huang; Ta-Chi Yang; Roya Farhadi; Majid Gholizadeh.
Demography and population growth are the most important subjects of population ecology and economics. Finite and intrinsic growth rates have been used as standard parameters for describing and comparing growth potentials of populations. The predation potentials of predator populations or consumption potentials of consumer populations cannot be properly described using these growth rates alone. A standard parameter is needed for the description of the predation or consumption potential, as well as for the quantitative evaluation of a predator population in an ecosystem or biological control program. We show that the finite predation rate can be the standard parameter by linking the finite rate, the stable age-stage distribution, and the age-stage specific...
Tipo: Manuscript
Palavras-chave: Ecology.
Ano: 2011
URL: http://precedings.nature.com/documents/6651/version/1

Isolation and maintenance of symbiotic fungi of ants in the tribe Attini (Hymenoptera: Formicidae)
Provedor de dados: 82
Autores: Silva-Pinhati,Ana C.O.; Bacci Jr.,Maurício; Siqueira,Célia G.; Silva,Aline; Pagnocca,Fernando C.; Bueno,Odair C.; Hebling,Maria J.A.
The isolation and maintenance of symbiotic basidiomycete fungi living in association with ants of the tribe Attini has been hindered by the slow growth rate of these fungi and the presence of other microorganisms on the surface of the material which the ants maintain inside their nests to provide a growth substrate for their symbiont. In this paper we describe a method which increases the efficiency of isolation of these fungal symbionts by over seven fold as compared to traditional isolation procedures. Underground nests of attine ants of the genera Atta, Acromyrmex, Trachymyrmex and Mycetarotes were located, from which samples containing the fungal symbiont and ants were collected and transported to the laboratory where the ants were able to clean the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atta; Acromyrmex; Trachymyrmex; Mycetarotes; Basidiomycete; Symbiosis.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000100001

Ontogenetic trajectories and hind tibia geometric morphometrics of Holymenia clavigera (Herbst) and Anisoscelis foliacea marginella (Dallas) (Hemiptera: Coreidae)
Provedor de dados: 82
Autores: Rodrigues,Daniela; Sanfelice,Daniela; Monteiro,Leandro R.; Moreira,Gilson R.P.
Holymenia clavigera (Herbst) and Anisoscelis foliacea marginella (Dallas) (Hemiptera: Coreidae) are distributed in southern Brazil and belong to the poorly studied tribe Anisoscelini. Preliminary observations indicate an ample coexistence of these species in terms of host-plant use. There is also a strong similarity regarding egg and nymph morphology. We characterized and compared their ontogenetic trajectories by means of growth curves and multivariate ontogenetic allometry, since the only apparent difference between these species is a remarkable growth in the hind tibia of A. foliacea marginella. Because their hind tibia is similar in the early instars, the shape variation of this structure was quantified by the thin plate splines function with the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometry; Anisoscelini; Growth; Immature stage; Shape analysis.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000500008

A test of Allen's rule in ectotherms: the case of two south American Melanopline Grasshoppers (Orthoptera: Acrididae) with partially overlapping geographic ranges
Provedor de dados: 82
Autores: Bidau,Claudio J.; Martí,Dardo A.
We studied the geographic variation of three morphometric characters in relation to body size in two South American grasshoppers (Acrididae), Dichroplus vittatus Bruner and D. pratensis Bruner to test Allen's rule in these ectotherms. Since both species follow the converse to Bergmann's rule owing to latitudinal and/or altitudinal variation in time available for growth and reproduction, geographic variation in body size proportions of protruding parts may obey to differential allometric growth in different geographic areas. Alternatively, it could reflect true Allenian variation related to thermoregulation. Body proportions were studied by correlation/regression analyses with geographic and climatic variables. In D. pratensis, body proportions increased...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometry; Body proportion; Body size; Dichroplus; Geographic variation.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2008000400004

Freshwater temperature in the state of Rio Grande do Sul, Southern Brazil, and its implication for fish culture
Provedor de dados: 83
Autores: Garcia,Luciano de Oliveira; Copatti,Carlos Eduardo; Wachholz,Flávio; Pereira Filho,Waterloo; Baldisserotto,Bernardo.
In this study we verified data of water temperatures collected by CORSAN-RS from 1996 to 2004 in several cities of the state of Rio Grande do Sul, southern Brazil, and analyzed the possibility of raising the most cultivated fish species in Brazil. The water temperature from 1996 to 2004 was 16 to 28ºC in summer, 17 to 23ºC in fall, 14 to 17ºC (down to 9ºC in the coldest months) in winter and 14 to 21ºC in spring. Native species of this state, such as silver catfish (Rhamdia quelen), traíra (Hoplias malabaricus), dorado (Salminus brasiliensis), pintado (Pimelodus maculatus), as well as carps (family Cyprinidae), are resistant to the low winter temperatures. These species have a lower growth rate in coldest months (winter/spring) but a good development in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish growth; Mortality; Growth; Freshwater fish; Water temperature.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000200016

Life-history characteristics of Pseudoplatystoma metaense (Teleostei: Siluriformes: Pimelodidae) from the northwestern Orinoco River Basin
Provedor de dados: 83
Autores: Pérez,Alfredo; Fabré,Nidia Noemí.
ABSTRACT The tiger shovelnose catfish (Pseudoplatystoma metaense) identified in literature prior to 2007 as P. tigrinum is the most important catfish species in the Orinoco River fishery, because of its abundance and high market price. The aim of this study was to obtain age, growth and population parameters of the of tiger shovelnose catfish. A total of 2,183 catfish, were sampled during 1996-2003 from the commercial fishery of the northwestern Orinoco River Basin in Venezuela, and were aged by examination of otoliths. Validation of otolith annuli was achieved with marginal increment analysis. Results suggest that, the opaque and translucent zones of otoliths were formed once per year. Length-weight relation and the von Bertalanffy growth model parameters...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Age; Growth; Otoliths; Overfishing; Venezuela.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000100209

Age and growth estimation of bigeye tuna, Thunnus obesus (Teleostei: Scombridae) in the southwestern Atlantic
Provedor de dados: 83
Autores: Duarte-Neto,Paulo; Higa,Fábio M.; Lessa,Rosangela P.
The purpose of the current study was to supply the first information on age and growth for Thunnus obesus caught in the equatorial south-western Atlantic using dorsal spines, an approach that has been successfully employed for ageing tuna species. The study was conducted using a multi-model inference based on information theory for back-calculated and observed length-at-age data. Uncertainty associated with the parameter estimation was verified and results were compared to other accounts on the species, considering both the statistical and methodological contexts. Samples were collected in Natal city (Rio Grande do Norte State, Brazil) from February 1999 to January 2000, of tuna vessels and from surveys, aimed at providing information on the Brazilian...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ageing techniques; Dorsal-fin spine; Growth parameters; Multi-model inference.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000100014

Determination of limited histotrophy as the reproductive mode in Mustelus schmitti Springer, 1939 (Chondrichthyes: Triakidae): analysis of intrauterine growth of embryos
Provedor de dados: 83
Autores: Orlando,Luis; Pereyra,Inés; Silveira,Santiago; Paesch,Laura; Oddone,Maria Cristina; Norbis,Walter.
ABSTRACT This work analyzed length-mass relationship, growth in length, mass variations and dynamic of yolk sac depletion of Mustelus schmitti embryos, extracted from females catched by the artisanal fishery acting off La Paloma (34°39'S, 54°10'W, Uruguay) during 2006 and 2007. Differences in total length and total mass between sexes were not significant. Embryos showed a negative allometric growth for both years with a slope change near the day 170 of the year, likely to be associated with the depletion of the external yolk sac. Gompertz and Von Bertalanffy curves were adjusted for each year. Parturition date was determined around the day 300 of the year. Yolk depletion followed a logistic dynamic Yt=1/(1+e(-13.749 + 0.072*t)) for 2006 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Embryo growth; Matrotrophy; Narrownose smoothhound; Reproductive mode; Southwestern Atlantic.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000400699

Population dynamics of Prochilodus nigricans (Characiformes: Prochilodontidae) in the Putumayo River
Provedor de dados: 83
Autores: Bonilla-Castillo,César A.; Córdoba,Edwin Agudelo; Gómez,Guber; Duponchelle,Fabrice.
ABSTRACT The black prochilodus (Prochilodus nigricans) is one of the most landed scaled fish species of the middle and upper parts of the Putumayo River, in the tri-national area between Colombia, Ecuador and Peru. Despite its importance, biological information about this species is too scant to guide fisheries management in this portion of the Colombian Amazon. In this study, 10884 individuals were sampled in the fish markets of Puerto Leguízamo between 2009 and 2017. This sampling was used to document reproductive patterns, but also growth and mortality parameters from length frequency distributions. The size at which all fish were mature was 22 cm Ls, which should be the established as the minimum size of capture to ensure that all fish have had a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Black prochilodus; Colombia; Growth; Mortality; Reproduction.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000200212

トウモロコシの生育に関する研究 : 第1報  一葉葉面積の簡便推定法
Provedor de dados: 19
Autores: 沢田, 壮兵; 長岡, 泰良; 園田, 直明; Sawada, Souhei; Nagaoka, Yasuyoshi; Sonoda, Naoaki.
Ano: 1974
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1373

カーフハッチで飼育した乳用子牛の発育と行動に対する季節の影響
Provedor de dados: 19
Autores: 池滝, 孝; 内山, 和夫; 広瀬, 由里子; 東条, 康三; 太田, 三郎; Iketaki, Takashi; Uchiyama, Kazuo; Hirose, Yuriko; Tojo, Yasuzo; Ota, Saburo.
Ano: 1983
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1415

Effect of continuous cropping of corn on the mineral uptakes
Provedor de dados: 19
Autores: Yamamoto, Shinro; Mino, Yosuke; 山本, 紳朗; 美濃, 羊輔.
Palavras-chave: Continuous cropping; Growth suppression; Mineral uptake; Zea mays; ミネラル吸収; 連作; 生育抑制; トウモロコシ.
Ano: 1998
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1292

コムギおよびインゲンの発芽過程と生育におよぽす乳酸菌発酵代謝産物の影響
Provedor de dados: 19
Autores: 横山, 和成; 藤間, 充; 美濃, 羊輔; Yokoyama, Kazunari; Toma, Mitsuru; Mino, Yosuke.
Ano: 1989
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1563

Effect of mechanical stress on growth of quackgrass(Agropyron repens(L.) BEAUV.) : III. Effect of pretreated rubbing stress on tolerance for treading and soil compaction
Provedor de dados: 19
Autores: 本江, 昭夫; Hongo, Akio.
Ano: 1985
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1468

マツ科樹木の産生する二次代謝物質が示す他感作用力の検定と作物栽培への応用
Provedor de dados: 19
Autores: 永田, 智子; Nagata, Tomoko.
畜産学研究科畜産環境科学専攻
Ano: 2010
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2642

放牧飼養およびドライロット飼養における乳用育成牛の発育と栄養摂取量の比較
Provedor de dados: 19
Autores: 池滝, 孝; 斎藤, 博昭; 黒沢, はるみ; 長谷川, 信美; 岡本, 明治; 佐藤, 基佳; 太田, 三郎; 吉田, 則人; Iketaki, Takashi; Saito, Hiroaki; Kurosawa, Harumi; Hasegawa, Nobumi; Okamoto, Meiji; Sato, Motoyoshi; Ota, Saburo; Yoshida, Norihito.
Ano: 1987
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1523

The impact of the host CCR5, TLR2 and TLR11 on production of nitric oxide, IL-6, IL-12 and growth of Toxoplasma gondii
Provedor de dados: 19
Autores: Ibrahim, H. M.; Nishikawa, Y.
The current study investigated the impact of the CCR5, TLR2 and TLR11 on production of nitric oxide (NO), IL-6 and IL-12 and growth of T. gondii, high virulent RH strain and avirulent PLK strain. All examined knockout macrophages infected with PLK strain produced significant lower levels of IL-12. On the other hand, TLR2 and TLR11 macrophages infected with RH strain produced significantly reduced levels of IL-12 as compared to wild-type macrophages. TLR2 and TLR11 macrophages infected with PLK strain significantly inhibited the production of IL-6 when compared to wild-type macrophages. Interestingly, significant reduction in the IL-6 and NO production was observed in TLR2 macrophages infected with PLK strain as compared to wild-type macrophages or to the...
Palavras-chave: Toxoplasma gondii; CCR5; TLR2; TLR11.
Ano: 2016
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4495

高熱処理牛骨粉の土壌の微生物相および大豆の生育におよぼす影響
Provedor de dados: 19
Autores: 横山, 和成; 美濃, 羊輔; Yokoyama, Kazunari; Mino, Yosuke.
Palavras-chave: 高熱処理牛骨粉; 土壌微生物相; 大豆の生育.
Ano: 1990
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1570

Alfalfa-Verticillium Albo-atrum Interactions : In Vitro Responses of Alfalfa Callus to Fungal Culture Filtrate and Cell Wall Components
Provedor de dados: 19
Autores: Koike, Masanori; Nanbu, Kouhei; Shimada, Tohru.
日本草地学会Journal of Japanese Society of Grassland Science 37(4):412-419(1992)より転載
Palavras-chave: Verticillium albo-atrum; Alfalfa; Callus; Cell wall components Culture filtrates; Disease resistance.
Ano: 1992
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1772

Effects of nitrogen，pH and soil factor on seedling growth of rumex obtusifolius and rumex crispus
Provedor de dados: 19
Autores: Hongo, Akio; 本江, 昭夫.
Ano: 1986
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1479

Analytical study of agricultural growth in Korea : Significance of research, development and extension of new high yield varieties of rice in the period of 1960-1979
Provedor de dados: 19
Autores: 李, 勝男; 出村, 克彦; 田島, 重雄; Lee, Seung Nam; Demura, Katsuhiko; Tagima, Shigeo.
Ano: 1983
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1420

Orchardgrass の分げつに関する研究 : 第3報　帯広地方におけるorchardgrassの季節的生長と刈取期について
Provedor de dados: 19
Autores: 丸山, 純孝; MARUYAMA, Junkoh.
http://www.obihiro.ac.jp/~library/kenkyu.html
Ano: 1976
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3629

日本短角種産肉能力検定間接法の成績に関する遺伝的パラメータの推定
Provedor de dados: 19
Autores: 口田, 圭吾; 山岸, 敏宏; 八巻, 邦次; 水間, 豊; Kuchida, Keigo; Yamagishi, Toshihiro; Yamaki, Kuniji; Mizuma, Yutaka.
Palavras-chave: Japanese Shorthorn; Progeny test; Genetic parameters.
Ano: 1990
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/928

In vitro inhibitory effect of fosmidomycin on the asexual growth of Babesia bovis and Babesia bigemina
Provedor de dados: 19
Autores: Sivakumar, T; Aboulaila, M. R. A.; Khukhuu, A; Iseki, H; Alhassan, A; Yokoyama, Naoaki; Igarashi, Ikuo; 横山, 直明; 五十嵐, 郁男.
The in vitro inhibitory effect of fosmidomycin was evaluated against the asexual growth of bovine Babesia parasites (Babesia bovis and Babesia bigemina). In the cultures with these parasites, severe reduction of parasite growth was observed by the addition of 1.25 μg/ml of the final drug concentration. Under these conditions, B. bigemina was completely cleared until the third day of cultivation. On the other hand, B. bovis was completely eliminated on the fourth day when the concentration was 6.25 μg/ml in the culture. These parasites failed to grow again when a drug-free medium was substituted for the subsequent cultivation. The IC50 values of fosmidomycin against B. bovis were determined as 0.88 and 0.63 μg/ml in the in vitro cultures with...
Palavras-chave: Fosmidomycin; Babesia bovis; Babesia bigemina; Asexual growth; In vitro culture.
Ano: 2008
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2235

Effect of Erythrocyte Pyridoxal Kinase Activity on the In Vitro Growth Rates of Plasmodium falciparum
Provedor de dados: 19
Autores: Inyama, J. S.; Orgo, A. S.; Ofulla, A. V. O.; Oloo, A.; Mulaya, N.; Roberts, C. R.; Martin, S. K.
Palavras-chave: Plasmodium falciparum; Pyridoxal kinase; Vitamin B.
Ano: 1993
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/196

黒毛和種・日本短角種およびヘレフォード種の発育曲線の推定について
Provedor de dados: 19
Autores: 盛田, 信太郎; 田島, 信一; 相馬, 和男; 鵜飼, 昭宗; 西村, 博; 柳谷, 和人; 光本, 孝次; Morita, Shintaro; Tajima, Shin-ichi; Sohma, Kazuo; Ukai, Akimune; Nishimura, Hiroshi; Yanagitani, Kazuto; Mitsumoto, Takatsugu.
Ano: 1972
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1298

The promoting effect and utilization of alcohol on legume and grass forage plants : I. The growth and production of alfalfa and orchard grass
Provedor de dados: 19
Autores: Oohara, Hisatomo; Yoshida, Norihito; Murakawa, Eitaro; Chang, Nam K.; 大原, 久友; 吉田, 則人; 村川, 栄太郎; 張, 楠基.
Ano: 1971
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1168

ダチョウの成長と産卵に伴う血液成分の変動
Provedor de dados: 19
Autores: 小川, 理紗; Ogawa, Risa.
畜産管理学専攻 家畜生産機能学講座
Ano: 2010
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2628

Analysis of factors affecting the postpartum metabolic status, milk production and fertility in dairy cow, and growth and metabolic state in their calf : Metabolic status during late gestation and gene polymorphism
Provedor de dados: 19
Autores: 宗像, めぐみ.
畜産衛生学専攻
Ano: 2013
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3570

Synthetic retinoid Am80 controls growth of intracellular Toxoplasma by inhibiting acquisition and synthesis of cholesterol in macrophages
Provedor de dados: 19
Autores: Ihara, F.; Nshikawa, Y.
Palavras-chave: Toxoplasma gondii; Cholesterol; Triacylglycerols.
Ano: 2014
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4091

Genetic Study on the Expression of the Color Factor of the Ascospore in Sordaria fimlicola : II. Effects of Carbon and Nitrogen Source to Mycelial Growth and Black Pigment Formation in the Medium
Provedor de dados: 19
Autores: 伊藤, 太郎; 守下, 憲治; Ito, Taro; Morishita, Kenji.
Ano: 1962
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2428

Statistical analyses on the quantitative traits in dairy cattle : VI. On the estimation of growth curves of Holstein bulls
Provedor de dados: 19
Autores: 光本, 孝次; 三好, 俊三; 若林, 敏継; MITSUMOTO, Takatsugu; MIYOSHI, Shunzo; WAKABAYASHI, Toshitsugu.
Ano: 1973
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1159

耕地防風林の作物生育及び収量に及ぼす影響について Ⅰ. 微気象の観測
Provedor de dados: 19
Autores: 村越, 信夫; 迫田, 英一; Murakoshi, Nobuo; Sakoda, Eiichi.
Ano: 1955
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2051

トウモロコシの生育に関する研究 : 第3報 帯広の過去33年間の気温からみた，十勝地方に適するサイレージ用トウモロコシ品種の早晩性
Provedor de dados: 19
Autores: 沢田, 壮兵; Sawada, Souhei.
Ano: 1984
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1450

FUCOIDAN INHIBITS THE IN VITRO GROWTH OF BABESIA BOVIS
Provedor de dados: 19
Autores: Takabatake, Noriyuki; Hashiba, Shintaro; Bork, Sabine; Okamura, Masashi; Yokoyama, Naoaki; Igarashi, Ikuo; 横山, 直明; 五十嵐, 郁男.
Palavras-chave: Babesia bovis; Fucoidan.
Ano: 2004
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/646

非線形成長曲線モデルを用いたホルスタイン雌牛の成長に関する研究
Provedor de dados: 19
Autores: 師, 守堃; 平方, 健; 鈴木, 三義; 三好, 俊三; 光本, 孝次; Shi, Shoukuin; Hirakata, Takeshi; Suzuki, Mitsuyoshi; Miyoshi, Shunzo; Mitsumoto, Takatsugu.
Ano: 1985
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1457

根粒菌の増殖と代謝系に及ぼすヒドロキシリシンの影響
Provedor de dados: 19
Autores: 大和田, 琢二; 井川, 香子; 佐藤, 哲也; OHWADA, Takuji; IGAWA, Keiko; SATO, Tetsuya.
Palavras-chave: Rhizobium; バクテロイド; ヒドロキシリシン(Hyl); グルタミン酸; 窒素固定; Rhizobium; Bacteroid; Hydroxylysine; Glutamic acid; Nitrogen fixation.
Ano: 1998
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1294

産卵鶏における体重推移と産卵性との関係
Provedor de dados: 19
Autores: 三好, 俊三; 太田, 奈緒; 口田, 圭吾; 光本, 孝次; Miyoshi, Syunzo; Ohta, Nao; Kuchida, Keigo; Mitsumoto, Takatsugu.
Palavras-chave: 産卵鶏; 体重推移; 産卵率; 卵構成; Egg-type chicken; Body weight; Egg production; Egg components.
Ano: 1995
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1403

エゾノギシギシとナガバギシギシの生長におよぼす踏圧と刈取りの影響
Provedor de dados: 19
Autores: 本江, 昭夫; HONGO, Akio.
http://www.obihiro.ac.jp/~library/kenkyu.html
Ano: 1987
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3133

Effects of different temporal foods in early nymphal　stage　on　later growth　of palomena angulosa MOTSCHULSKY(Hemiptera:Pentatomidae)
Provedor de dados: 19
Autores: Hori, Koji; Saruta, Motoi; 堀, 浩二; 猿田, 基.
Ano: 1986
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1503

バベシア原虫のジヒドロオロト酸デヒドロゲナーゼを標的としたバベシア症に対する有効な治療法の開発
Provedor de dados: 19
Autores: Kamyingkerd, Ketsarin.
Doctoral Program in Animal and Food Hygiene
Ano: 2014
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3872

土壌中に埋没したシバムギ地下茎からの苗条の生長 : とくに地下茎の齢と施用窒素レベルの影響について
Provedor de dados: 19
Autores: 本江, 昭夫; Hongo, Akio.
Ano: 1982
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1409

Effect of Soil Compaction on the Early Growth of Herbage Plants
Provedor de dados: 19
Autores: OHTOMO, Koichi; TOMIYA, Naohiro; MINO, Yosuke; SAKAI, Ryutaro; 大友, 功一; 富谷, 尚博; 美濃, 羊輔; 酒井, 隆太郎.
http://www.obihiro.ac.jp/~library/kenkyu.html
Ano: 1979
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3730

土壌の堅密性が牧草の根の初期生長におよぼす影響について
Provedor de dados: 19
Autores: 大友, 功一; 藤本, 長之; 美濃, 羊輔; OHTOMO, Kohichi; FUJIMOTO, Nagayuki; MINO, Yosuke.
http://www.obihiro.ac.jp/~library/kenkyu.html
Ano: 1978
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3692

Dynamic Scaling in the Growth of a Non-Branching Plant, Cardiocrinum cordatum
Provedor de dados: 19
Autores: Koyama, Kohei; Hidaka, Yoshiki; Ushio, Masayuki.
We investigated whole-plant leaf area in relation to ontogenetic variation in leaf-size for a forest perennial herb, Cardiocrinum cordatum. The 200-fold ontogenetic variability in C. cordatum leaf area followed a power-law dependence on total leaf number, a measure of developmental stage. When we normalized for plant size, the function describing the size of single leaves along the stem was similar among different-sized plants, implying that the different-sized canopies observed at different times in the growth trajectory were fundamentally similar to each other. We conclude that the growth trajectory of a population of C. cordatum plant leaves obeyed a dynamic scaling law, the first reported for a growth trajectory at the whole-plant level.
Ano: 2012
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4525

マツ科樹木の樹液の施用がトマトの生育と食味におよぼす影響
Provedor de dados: 19
Autores: 工藤, 悠; 本多, 博一; 徳橋, 和也; 秋本, 正博.
平成21年度年次講演会一般講演
Ano: 2009
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2736

Growth and yield of spring wheat sown in autumn and early winter in the Tokachi district
Provedor de dados: 19
Autores: 沢田, 壮兵; 新発田, 修治; 高橋, 浩司; 角谷, 啓登; Sawada, Souhei; Shibata, Shuji; Takahashi, Kouji; Kakutani, Hiroto.
Palavras-chave: 秋播き栽培; コムギ; 収量; 生育; 春播き品種.
Ano: 1991
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1672

黒毛和種去勢牛枝肉脂肪組織の成長と生体及び枝肉測定値からの枝肉脂肪量の推定
Provedor de dados: 19
Autores: 吉田, 浩; 日高, 智; 岡田, 光男; Yoshida, Hiroshi; Hidaka, Satoshi; Okada, Mitsuo.
Ano: 1985
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1465

Inhibitory Effects of Pepstatin A and Mefloquine on the Growth of Babesia Parasites
Provedor de dados: 19
Autores: Munkhjargal, Tserendorj; AbouLaila, Mahmoud; Mohamad Alaa Terkawi; Sivakumar, Thillaiampalam; Ichikawa, Madoka; Davaasuren, Batdorj; Nyamjargal, Tserendorj; Yokoyama, Naoaki; Igarashi, Ikuo; 横山, 直明; 五十嵐, 郁男.
We evaluated the inhibitory effects of pepstatin A and mefloquine on the in vitro and in vivo growths of Babesia parasites. The in vitro growth of Babesia bovis, B. bigemina, B. caballi, and B. equi was significantly inhibited (P &lt; 0.05) by micromolar concentrations of pepstatin A (50% inhibitory concentrations = 38.5, 36.5, 17.6, and 18.1 μM, respectively) and mefloquine (50% inhibitory concentrations = 59.7, 56.7, 20.7, and 4 μM, respectively). Furthermore, both reagents either alone at a concentration of 5 mg/kg or in combinations (2.5/2.5 and 5/5 mg/kg) for 10 days significantly inhibited the in vivo growth of B. microti in mice. Mefloquine treatment was highly effective and the combination treatments were less effective than other treatments....
Ano: 2012
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3829

Growth of conifers planted in Commemorative Forest of Obihiro-no-mori
Provedor de dados: 19
Autores: 紺野, 康夫; 平工, 哲夫; Konno, Yasuo; Hiraku, Tetsuo.
Palavras-chave: 帯広の森; ふるさとの森; 都市公園; 自然環境復元; 針葉樹.
Ano: 1996
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1401

The Growth of the Lymphoid Organs and the Gonads in the Japanese Quails (Coturnix coturnix japonica)
Provedor de dados: 19
Autores: YAMADA, Junzo; TANAKA, Hiroshi; IWASA, Kenji; YAMASHITA, Tadayuki; MISU, Mikio; 山田, 純三; 田中, 宏; 岩佐, 憲二; 山下, 忠幸; 三須, 幹男.
Ano: 1971
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3595

Estudio sobre el crecimiento en peso y factor de condición en larvas de anchoíta, Engraulis anchoita Hubbs &amp; Marini. Variaciones regionales, estacionales y anuales
Provedor de dados: 20
Autores: de Ciechomski, J.D.; Sánchez, R.P.; Alespeiti, G.; Regidor, H.
The equation log W=a+bL (where W=dry weight in ug, and L=total length in mm)was used to describe the growth in weight of larval anchovy collected in two areas of the Argentine sea, sampled in different months and several years. Regression lines were compared by covariance analysis applied to two size groups, namely larvae less and over 10 mm total length, as an evident break in the slopes indicated the existence of a chenge of rythm in the trajectory of larval growth in length. Significant differences between the slopes of the growth lines were observed within the smaller size group. No regional or yearly differences could be established fo larvae larger than 10 mm.
Tipo: Journal Contribution
Palavras-chave: Length-weight relationships; Fish larvae; Condition factor; Fish larvae; Http://aims.fao.org/aos/agrovoc/c_2924.
Ano: 1986
URL: http://hdl.handle.net/1834/2023

Fijación y crecimiento del ostión de mangle Ostrea columbiensis (Hanley) 1946 a nivel de cultivo
Provedor de dados: 20
Autores: Yoong, F.; Reinoso, B.
The present study was carried out in samples of Ostrea columbiensis (Hanley) taken from the estero ”Las Alforjas”, during de period between march-december of 1989. Three stations were selected in the estero, in order to observe the fixation, growth and survival of the larvae in special collectors designed by the authors. The percentage of fixation in the station 1 was 25,8%, in the station 2, 37,8% and in the station 3, 36,4%. The larvae oyster got fixed, preferably, by the external face of the collector (big valve) in a percentage of 64,3, while on the external face this percentage was 35,7%. The average height of the oysters during the whole period of study was 52 mm, with a monthly increment of 5,2 mm. The percentage of the oysters survival was 84,4%....
Tipo: Journal Contribution
Palavras-chave: Ostrea columbiensis; Mollusc culture; Growth; Larval development; Survival; Mollusc culture; Growth; Survival; Http://aims.fao.org/aos/agrovoc/c_4896; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_7538.
Ano: 1993
URL: http://hdl.handle.net/1834/3053

Determinación de la capacidad antiepibiótica de los extractos orgánicos crudos de las esponjas marinas Cribrochalina infundibulum y Biemna cribaria
Provedor de dados: 20
Autores: Arias, J.; Zea, S.; Newmark, F.; Santos-Acevedo, M.
As a contribution to the biological knowledge about the sea fan Gorgonia ventalina and the use of this information as a tool to generate conservation and management strategies for this threatened species, a study about its annual growth rate, in different reef areas in Santa Marta and the National Natural Park Tayrona in the Colombian Caribbean took place. Manual measurements of 35 colonies were analyzed and images of 11 colonies were recorded in the beginning and in the end of the field stage. The annual growth rate varies among colonies and areas where measurements were taken. The average annual growth rate obtained with both of the methods was high and oscillated between 7.6 and 8.1 cm/year in height and between 6.9 and 8.3 cm/year wide. The total area...
Tipo: Journal Contribution
Palavras-chave: Antifouling substances; Environmental impact; Fans; Environmental impact; Http://aims.fao.org/aos/agrovoc/c_24420.
Ano: 2006
URL: http://hdl.handle.net/1834/1975

Requerimientos de proteína en subjuveniles de Tortuga Carey (Eretmochelys imbricata)
Provedor de dados: 20
Autores: Pelegrín, E.; Álvarez, J.S.; Fraga, I.; Galindo, J.
Se evaluó el efecto de dietas isocalóricas e isolipídicas que contenían 45, 47, 49, 51, 53 y 55% de proteína sobre el crecimiento y supervivencia de subjuveniles de tortuga carey (Eretmochelys imbricata). Se desarrolló un diseño experimental completamente aleatorizado durante 68 días en condiciones controladas de laboratorio y se utilizaron ejemplares con peso promedio inicial de 76 g. Los mayores crecimientos en peso se obtuvieron con las dietas que contenían 49 y 51% de proteína, lográndose crecimientos diarios de 2.8 g. El factor de conversión del alimento varió entre 1.98 y 2.68 y los mayores valores de eficiencia proteica lo alcanzaron los ejemplares que obtuvieron los mayores crecimientos. Se recomienda el empleo de piensos que contengan 49-51% de...
Tipo: Journal Contribution
Palavras-chave: Proteins; Diets; Growth; Growth; Proteins; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_6259.
Ano: 2003
URL: http://hdl.handle.net/1834/3710

Untersuchungen über Wachstum und Altersverteilung einer Population des Grünen Leguans Iguana iguana iguana L. (Reptilia: Iguanidae)
Provedor de dados: 20
Autores: Müller, H.
Una población de Iguanas verdes (Iguana iguana iguana L., = Iguana tuberculata Laur.) fue observada durante un año y el crecimiento de los animales controlado. Dependiendo de la longitud desde la cabeza hasta la cavidad anal fueron clasificados en grupos de diferentes tamaños. Según el aumento de su peso fue deducida la distribución de edad dentro de la población y la edad máxima de vida.
Tipo: Journal Contribution
Palavras-chave: Growth; Aquatic reptiles; Growth; Http://aims.fao.org/aos/agrovoc/c_3394.
Ano: 1968
URL: http://hdl.handle.net/1834/3252

Presencia de tubos Calcáreos biogénicos en la estructura del coral Madracis myriaster (Scleractinia: Pocilloporidae) de aguas profundas en el Caribe colombiano.
Provedor de dados: 20
Autores: López, N.; Santodomingo, N.; Reyes, J.
A large number of branches from the scleractinian coral Madracis myriaster, collected in deep waters of the Colombian Caribbean, showed both inside and around the skeleton calcareous structures constructed by tubiculous organisms. Here, based on the growth strategy of the coral and the physical conditions of deep-water areas, we describe the functional effect of the tube structures on deep coral frameworks formation and growth.
Tipo: Journal Contribution
Palavras-chave: Deep water; Growth; Growth; Http://aims.fao.org/aos/agrovoc/c_3394.
Ano: 2008
URL: http://hdl.handle.net/1834/3513

Crecimiento y mortalidad de la castañeta Cheilodactylus bergien la zona común de pesca Argentino-Uruguaya
Provedor de dados: 20
Autores: Wöhler, O.C.
Growth parameters based on age assignation, length-weight relationship and mortality rates of castañeta Cheilodactylus bergi were studied. Samples came from landings at Mar del Plata Port(Buenos Aires province, Argentina) during 1989, and from a research cruise carried out in the Argentine-Uruguayan Common Fishing Zone(CFZ) during 1991. Castañeta is a longeval demersal species. The growth parameters of von Bertalanffy special model were: 1) Lý 31.95,34.69, 32,30; 2) K 040, 033, 039; and 3) t0 0.00, -0.16, 0.03 corresponding to males, females and all fish respectively. The rates of total mortality (Z) were 0.18, 0.16 and 0.17 for males, females and all fish, respectively. Because of the low rate of exploitation during the study, this values can be used as...
Tipo: Journal Contribution
Palavras-chave: Growth; Mortality; Length-weight relationships.
Ano: 1997
URL: http://hdl.handle.net/1834/5792

Evaluación de diferentes densidades de la microalga Nannochloropsis oculata como alimento Paraartemia
Provedor de dados: 20
Autores: Tizol-C., Rafael.
Laboratory experimente were carried out to determine the possibility of using the microalgae Nannochloropsis oculata as a food source for brine shirmp. Among the range concentrations studied (3 x 105 to 14 x 105 cells/ml), 12 x 105 cells/ml offered the best resulte of survival and growth rate and it is recommended as the most effective. From correlation matrix, high valúes (r &gt; 0.90; a = 0.05) were obtained for the relation of microalgae concentration and survival, growth rate and the variation of average lenght. The mínimum cellular concentration of microalgae which is necessary for brine shrimp culture ¡s 5.6 x 105 cells/ml
Tipo: Journal Contribution
Palavras-chave: Density; Food; Growth rate; Food; Density; Growth rate; Http://aims.fao.org/aos/agrovoc/c_9001003; Http://aims.fao.org/aos/agrovoc/c_2186; Http://aims.fao.org/aos/agrovoc/c_16130.
Ano: 1994
URL: http://hdl.handle.net/1834/3771

Estudio de edad y crecimiento de la sardina fueguina (Sprattus fuegensis)de las costas de la provincia de Santa Cruz e Islas Malvinas
Provedor de dados: 20
Autores: Cousseau, M.B.; Gru, D.L.
Samples of Sardina fueguina (Sprattus fuegensis)were taken during research cruises carried out in 1974 and 1978. Length and age frequency distributions were analyzed, and von Bertalanffy growth parameters were calculated for the coastal waters of two geographical regions: Province of Santa Cruz and northern part of Malvinas Islands. Lenght and weight growth curves have been calculated for each region and each year. Marked differences have been found between gowth parameters of both regions, and the calculated values showed a good fit with the observed ones. According to these results, it is possible to assume that the sardines of both regions constitute two different populations. However, more information on the total distribution of the species will have...
Tipo: Journal Contribution
Palavras-chave: Age composition; Growth curves; Stock identification; Sardine fisheries; Age composition; Http://aims.fao.org/aos/agrovoc/c_29093.
Ano: 1982
URL: http://hdl.handle.net/1834/2052

Assessment of opportunities to map pearl millet tolerance to salinity during germination and early seedling growth
Provedor de dados: 30
Autores: Mukhopadhyay, R.
Palavras-chave: Millets; Tolerance; Genotypes; Phenotypes; Genetic markers; Genomes; Heritability; Soil salinization; Feed crops; Humus.
Ano: 2005
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3215

Variation in sensitivity to salinity in groundnut cultivars during seed germination and early seedling growth
Provedor de dados: 30
Autores: Singh,R.
Palavras-chave: Viruses; Groundnuts; Tolerance; Vegetative stage; Water; Genotypes; Seed testing; Protocols; Germinability; Irrigation water.
Ano: 2007
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3357

Growth and development of the pearl millet plant
Provedor de dados: 30
Autores: R.K.
Palavras-chave: Leaf area; Millets; Grain; Stages; Dry matter; Reproductive stage; Developmental stages; Vegetative stage; Bakery products; Cereal crops.
Ano: 1981
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4211

Effect of dates of planting, plant geometry and number of seedlings on growth and yield of hybrid rice (Oryza sativa L.)
Provedor de dados: 30
Autores: V.K.
Palavras-chave: Hybrids; Grain; Heterosis; Planting date; Dry matter; Spacing; Yields; Field experimentation; Plant population; Leaf area index.
Ano: 2008
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4676

Modeling the Growth and Development of Sorghum and Pearl Millet
Provedor de dados: 30
Autores: S.M.
Palavras-chave: Leaf area; Photoperiodicity; Crop modelling; Soil water; Genotypes; Sorghum; Transpiration (animals); Water balance; Dry matter.
Ano: 1989
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4082

Effects of micronutrients on growth and yield of pigeonpea
Provedor de dados: 30
Autores: Malla Reddy,M.
Palavras-chave: Pigeonpeas; Boron; Seed treatment; Inorganic acid salts; Molybdenum; Soil sciences; Genetic soil types; Chickpeas; Grain legumes; Rhizobium.
Ano: 2007
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3336

Aspects of the life-cycle of &lt;i&gt;Monhystera parelegantula&lt;/i&gt; (Nematoda; Monhysteridae)
Provedor de dados: 27
Autores: Vranken, G.; Thielemans, L.K.; Heip, C.H.R.; Vandycke, M.
&lt;i&gt;Monhystera parelegantula&lt;/i&gt; (De Coninck,1943) was collected from the sediment of the Sluice-dock, a euhaline-polyhaline lagoon near the harbour of Ostend (Belgium). The species was cultivated in large numbers on a bacto-agar medium with bacterial growth. Embryonic growth was studied at 30 °C and 30 promille S. Maximum embryonic length-growth occurs at the vermiform stage. Post-embryonic length-growth, studied at 25 °C and 30 promille S, is a linear function of time and may be expressed as l = 160.46 + 29.55(t-t&lt;sub&gt;o&lt;/sub&gt;), where t&lt;sub&gt;o&lt;/sub&gt; = time at the beginning of development; t and l = time (d) and length (µm). At 25 °C and 30 promille S, average embryonic development time and generation time are 4 and 9 d...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Life cycle Monhystrella parelegantula ANE; Belgium; Oostende Harbour; Sluice Dock.
Ano: 1981
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3410

An intensive approach to Atlantic halibut fry production
Provedor de dados: 27
Autores: Holmefjord, I.; Gulbrandsen, J.; Lein, I.; Refstie, T.; Léger, P.; Harboe, T.; Huse, I.; Sorgeloos, P.; Bolla, S.; Olsen, Y.; Reitan, K.I.; Vadstein, O.; Øie, G.; Danielsberg, A.
The larval stage is regarded to be the main bottleneck of halibut production. Halibut eggs were obtained from captive broodstock both by stripping and by natural spawning. Artificial photoperiods were used to increase the total spawning season. Yolk sac larvae are presently produced either in small stagnant units or in large flow through systems. A major consideration is to avoid stress of the larvae, caused by mechanical disturbances of the larvae and by high bacterial load or high ammonia levels in the water.The experimentation showed that halibut larvae began to ingest algae earlier than rotifers &lt;i&gt;Brachionus&lt;/i&gt; sp. Supplementation of algae to first feeding tanks resulted in enhanced survival and growth rate of the larvae. Both rotifers...
Tipo: Info:eu-repo/semantics/article
Ano: 1993
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2709

Studies of the life-history and energetics of marine and brackish-water nematodes: 2. Production, respiration and food uptake by &lt;i&gt;Monhystera disjuncta&lt;/i&gt;
Provedor de dados: 27
Autores: Herman, P.M.J.; Vranken, G.
An energy budget was constructed for the marine nematode &lt;i&gt;Monhystera disjuncta&lt;/i&gt;. Respiration was measured with a modified Cartesian diver technique, in which the nematodes were kept in agar inside the diver 'head'. The relationship between respiration and body weight was: R=1.53 W&lt;sup&gt;0.75&lt;/sup&gt;. Body growth was exponential during the juvenile phase, with a growth rate equal to 0.61 d&lt;sup&gt;-1&lt;/sup&gt;. After maturation the growth rate fell to 0,17 d&lt;sup&gt;-1&lt;/sup&gt;. Food uptake was measured in experiments with radiolabeled bacteria. In one series of experiments the accumulation of radiolabel in the nematodes was followed. In a second series the decrease in labeling was followed when pre-labeled nematodes fed on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioenergetics; Brackishwater environment; Energy budget; Energy flow; Feeding; Life history; Meiobenthos; Respiration; Monhystera disjuncta; Nematoda [Nematodes].
Ano: 1988
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3146

Organic in Europe: Prospects and Developments
Provedor de dados: 21
Autores: Willer, Helga; Meredith, Stephen; Moeskops, Bram; Busacca, Emanuele.
In 2016/2017 the European organic food and farming sector continued to excel both in terms of organic production and market growth as well as the latest developments in  European Union (EU) food and farming policy. Data for 2016 shows the European organic food market recording significant growth – increasing by 11.4 percent (EU: 12.0 percent). At the same time, the organic sector faces a number of challenges, notably that the growth rates in organic production continue to lag behind the dynamic growth seen within the organic food market. In the public policy arena at the EU level, there are some opportunities for the organic sector to capitalise on the growing awareness and interest in tackling sustainability concerns in the agri-food sector amongst...
Tipo: Book chapter
Palavras-chave: Surveys and statistics; European Union; Europe.
Ano: 2018
URL: http://orgprints.org/34673/1/willer-etal-europe-developments.pdf

Incorporation of Residues of the Medicinal Plant Echinacea purpurea for Weed Management in an Organic Sunflower
Provedor de dados: 21
Autores: Douros, Nektarios; Angelopoulou, Fotini; Papastylianou, Panagiota; Papatheohari, Yolanda; Travlos, Ilias; Konstantas, Aris; Bilalis, Dimitrios.
Eastern purple coneflower [Echinacea purpurea (L.) Moench.] is globally recognized as one of the most popular medicinal herbs. In the present study, the effects of incorporation of the plant residues of this medicinal plant on weed flora and early growth of a sunflower crop were investigated. A field and a pot experiment were conducted at the Agricultural University of Athens. The field experiment was conducted under organic conditions, while in the pot experiment the focus was on the early growth of sunflower plants under the effect of plant residues. The results showed that there was a significant effect of plant residues on weed flora and the producted biomass, especially during the first crucial growth stages of sunflower. Particularly, the...
Tipo: Conference paper, poster, etc.
Palavras-chave: Production systems; Crop combinations and interactions; Weed management.
Ano: 2014
URL: http://orgprints.org/23797/1/23797%20Douros_MM.pdf

Residual effects of cutting and grazing on grass/clover growth
Provedor de dados: 21
Autores: Eriksen, J.; Søegaard, K.; Askegaard, M.
The residual effect of cutting and grazing during the growing season was investigated in the spring and summer growth in an organic crop rotation with 1-4 year-old grass-clover mixtures of white clover (Trifolium repens L.) and perennial ryegrass (Lolium perenne L.) either with or without red clover (Trifolium pratense L.) and with and without slurry. The white clover mixtures had significantly higher yields in spring and summer in swards that were previously grazed compared to previously cut swards, when slurry was applied. The percentage of white clover in spring was considerably reduced by previous grazing and this caused the yield response of slurry application to be highest following grazing. A similar effect on the clover content was not found in the...
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop combinations and interactions; Crop husbandry.
Ano: 2010
URL: http://orgprints.org/17877/4/17877.pdf

State of the art review - On healthy growth initiatives in the mid-scale values-based chain of organic food
Provedor de dados: 21
Autores: Kvam, Gunn-Turid; Bjørkhaug, Hilde.
The aim of the paper is to present results from a review of successful mid-scale organic values-based chains, where characteristics of such chains and their strategies for growth are in focus. The work is part of an EU-project, Healthy Growth, where ten European countries participate. Results are based on reviewed research in each participating country and a general review of research on successful chains. Results show that successful mid-scale values-based chains are characterized by an emphasis on diverse values and product qualities, they emphasize personal relationships between chain actors, are based on a diversity of consciously chosen sale channels both direct and indirect and utilize a variety of communication channels/means to communicate values...
Tipo: Conference paper, poster, etc.
Palavras-chave: "Organics" in general; Food systems; Environmental aspects; Knowledge management.
Ano: 2014
URL: http://orgprints.org/27675/7/27675.pdf

Studies on Soil fertility, Cow urine and Panchagavya levels on Growth and Yield of Maize
Provedor de dados: 21
Autores: Devakumar, N.; Subha, S.; Rao, G.G.E.; ImranKhan, J.
The present study revealed that higher grain and stover yield, plant height and number of leaves in maize with panchagavya, cow urine but it was comparable to recommended fertilizer treatments at higher level (200% and 300%). It can be concluded that presence of rich plant growth substances, both major and micro nutrients, beneficial microbial population in organic liquid manures help to bring rapid changes in phenotypic characteristics of plants and also improves the growth and ultimately improve the productivity of the crops. Liquid organic manure like panchagavya could be prepared locally by farming community and obtain increased yield levels. Such practices would pave way to reduce use of external inputs and increase sustainability among organic...
Tipo: Conference paper, poster, etc.
Palavras-chave: Composting and manuring; Nutrient turnover.
Ano: 2014
URL: http://orgprints.org/23358/1/23358%20N.%20Devakumar_OWC_research%20track%202014%20Panchagavya-1_MM.pdf

Skatole pattern during the growth period 50 to 100 kg liveweight in entire male pigs of the crossbreed combinations YDxLYD and HxLYD kept in groups of entire male pigs or in groups with dominant female pigs
Provedor de dados: 21
Autores: Hansen, L.L.; Jensen, J.A.; Hansen-Møller, J.; Hermansen, J.
1. Dominant females do not decrease the skatole and androstenone concentration in entire male pigs being dominated during the growth period from 50-100 kg liveweight (see fig. 1 and 3).  2. The amount of entire male pigs having higher skatole concentrations in blood – corresponding to skatole in backfat &gt; 0.15 µg/g – are surprisingly high at 50 kg and 75 kg liveweight compared to 100 kg (10, 9 and 13 entire male pigs).  3. Furthermore it is not the same pigs having high skatole concentrations during the period from 50 over 75 to 100 kg liveweight.  4. The crossbreed HxLYD had significant higher skatole concentration in backfat at slaughter (100 kg liveweight) compared to the crossbreed YDxLYD (P&lt;0.05)(see fig. 2). However, there was no significant...
Tipo: Conference paper, poster, etc.
Palavras-chave: "Organics" in general; Health and welfare; Feeding and growth.
Ano: 2005
URL: http://orgprints.org/10056/1/10056.pdf

Growth of barley (Hordeum vulgare L.) roots in biopores   with differing carbon and nitrogen contents
Provedor de dados: 21
Autores: Kautz, Timo; Athmann, Miriam; Köpke, Ulrich.
Large sized, vertical biopores can provide preferential pathways for root growth, hence facilitating the exploration of great soil depths by crop roots. This is of particular importance for organic production systems, where crops are more dependent on nutrient acquisition from the solid soil phase than under conditions of mainstream agriculture. The relevance of biopores for nutrient acquisition from the subsoil can possibly depend on their individual properties. The aim of this study was to test how different chemical pore wall properties affect the growth of barley (Hordeum vulgare L.) roots in large sized biopores. Bulk soil, pore wall material and roots from individual biopores were collected from three depth layers in 45-75 cm soil depth. C and N...
Tipo: Conference paper, poster, etc.
Palavras-chave: Soil biology Cereals; Pulses and oilseeds Nutrient turnover.
Ano: 2014
URL: http://orgprints.org/23806/1/23806_MM.pdf

Low-P solution culture may assist screening of root growth vigor in soil for high nutrient uptake of spring wheat varieties
Provedor de dados: 21
Autores: Wang, Yaosheng; Andersen, Sven Bode; Thorup-Kristensen, Kristian; Jensen, Lars Stoumann; Magid, Jakob.
Root and root hairs of plants have been intensively studied in solution culture; however, correlation of such measurements in solution culture with development in soil is poorly understood. This study compared growth of roots and root hairs as well as uptake of macro- and micronutrients of six spring wheat varieties in solution culture under P stress and P abundance and in a low fertility soil. Results showed that root length and surface area under P stress was significantly positively correlated with that in the low fertility soil, while no such correlation was apparent for root hair length and density. In absolute terms the root length, surface area, root hair length and density of spring wheat varieties were substantially higher in soil than in solution...
Tipo: Journal paper
Palavras-chave: Soil quality Breeding; Genetics and propagation.
Ano: 2014
URL: http://orgprints.org/27913/3/27913.pdf

Effect of colostrum type on serum gamma globulin concentration, growth and health of goat kids until three months
Provedor de dados: 21
Autores: Iepema, G.L.; van Eekeren, N.
In this study the effect of three colostrum types; goat, cow and artificial colostrum, on serum gamma globulin concentration (GGC), growth and health of goat kids during the first three months of the rearing phase was measured. Thirty newborn goat kids were randomly assigned to three experimental groups; goat colostrum (GC), cow colostrum (CC) and artificial colostrum (AC). At 2, 28, 56 and 86 days serum GGC and live weight were measured. The three colostrum types were analysed on immunoglobulin G (IgG). Goat colostrum contained twice as much IgG as cow colostrum and artificial colostrum. At 2 and 28 days GC kids had a higher serum GGC than CC and AC kids. At 56 and 86 days no significant differences in serum GGC between the groups were found. No effect of...
Tipo: Conference paper, poster, etc.
Palavras-chave: Sheep and goats; Health and welfare; Feeding and growth.
Ano: 2008
URL: http://orgprints.org/11943/1/Iepema_11943_ed.doc

University of Warwick: Climate chamber
Provedor de dados: 21
Wide range of controlled environment facilities. Plant growth chambers, insect rearing facility.
Tipo: Research facility description
Palavras-chave: Crop health; Quality; Protection Crop husbandry.
Ano: 2023

Sortenbedingte Unterschiede der N-Effizienz und Beziehung zum Wurzelwachstums von Weizen (Triticum aestivum L.) unter den Bedingungen des Ökologischen Landbaus
Provedor de dados: 21
Autores: Baresel, J P; Reents, H J; Zimmermann, G.
N Uptake at EC 32, 62 and 92 was determined in 6 wheat varieties in field trials under conditions of conventional and organic farming over 3 years. Root growth potential was assessed in a separate trial under controlled conditions. Rank of varieties regarding N-uptake was dependent on yield level of the test environments and was mainly due to differences in uptake during grain filling. In one variety high N uptake potential coincided with high root growth in later growth stages.
Tipo: Conference paper, poster, etc.
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation.
Ano: 2005
URL: http://orgprints.org/3763/1/3763.pdf

Root growth response of spring wheat (Triticum aestivum L.) and mallow (Malva sylvestris L.) to biopore generating precrops
Provedor de dados: 21
Autores: Perkons, Ute; Kautz, Timo; Köpke, Ulrich.
Little is known about root growth in biopores. The aim of this study was to quantify differences of root-length density (RLD) in biopores between a tap root system (mallow) and a fibrous root system (wheat).  A field experiment was undertaken near Bonn, Germany on a Haplic Luvisol developed from loess. Lucerne (Medicago sativa L.) and chicory (Cichorium intybus L.) were grown as precrops in a field trial followed by spring wheat (Triticum aestivum L.) and mallow (Malva sylvestris L.). Biopore density was measured on horizontal areas of 50 x 50 cm. RLD was estimated using the profile wall method to 160 cm soil depth. Roots growing in biopores with a diameter &gt; 2 mm were recorded separately from the roots in the bulk soil.  Biopore density was higher...
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop combinations and interactions Cereals; Pulses and oilseeds.
Ano: 2014
URL: http://orgprints.org/23996/1/23996%20Perkons_et_al_final_MM.pdf

Selectivity of weed harrowing in lupin
Provedor de dados: 21
Autores: Jensen, Rikke K.; Rasmussen, Jesper; Melander, Bo.
Three field experiments were conducted in lupin in 1997, 1998 and 1999 to study two aspects of selectivity of post-emergence weed harrowing; the ability of the crop to resist soil covering (the initial damage effect), and the ability of the crop to tolerate soil covering (the recovery effect). Each year soil covering curves and crop tolerance curves were established in three early growth stages of lupin. Soil covering curves connected weed control and crop soil cover in weedy plots, and crop tolerance curves connected crop yield and crop soil cover in weed-free plots. The experiments showed that both resistance and tolerance were unaffected by the growth stage of lupin within the range from the cotyledon to the 7 to 8 leaf growth stages. Tolerance to soil...
Tipo: Journal paper
Palavras-chave: Weed management.
Ano: 2004
URL: http://orgprints.org/3086/1/wre_396.pdf

Wachstum und Produktqualität verschiedener Schweineherkünfte aus ökologischer Haltung
Provedor de dados: 21
Autores: Küster, Simone; Baulain, Ulrich; Henning, Martina; Brandt, Horst.
In order to investigate if there are differences between endangered or modern pig breeds concerning growth and product quality a total of ninety fattened pigs were housed and fed after the principles of the organic farming. During the fattening period the animals got regularly weight and measured alive with magnetic resonance tomo-graphy (MRT) in order to research tissue growth. After achieving a live weight of about 120 kilogram the pigs got slaughtered. After slaughtering the carcass quality was acquired, samples were taken for investigating the meat quality and one carcass side was measured again with the MRT. Results point out that differences exist between the breeds concerning the attributes of growth, carcass and meat quality.
Tipo: Conference paper, poster, etc.
Palavras-chave: Breeding and genetics.
Ano: 2007
URL: http://orgprints.org/9530/1/9530_K%C3%BCster_Poster.pdf

Apfeltrester im Schweinefutter reduziert die durch das Mykotoxin Deoxynivalenol verursachte Wachtumsreduktion
Provedor de dados: 21
Autores: Gutzwiller, Andreas; Stoll, Peter.
Fusarium head blight and the contamination of cereals with the Fusarium toxins deoxynivalenol (DON) and zearalenone is more prevalent when fields are not tilled in order to conserve the soil structure. DON impairs the feed intake and the growth rate of young pigs, whereas both, DON and zearalenone affect the fertility of sows. In two feeding trials using a total of 220 weaner pigs the hypothesis was tested that apple pomace alleviates the negative effects of Fusarium toxins. The two experiments had a 2 x 2 factorial design: Fusarium contaminated and uncontaminated wheat, and 8 % apple pomace and no pomace in the diet. In both trials, the animals receiving the mycotoxin contaminated diets without pomace gained less weight than the pigs receiving either...
Tipo: Conference paper, poster, etc.
Palavras-chave: Pigs; Health and welfare; Feeding and growth.
Ano: 2005
URL: http://orgprints.org/3423/1/3423.pdf

Fact sheet Sweden Ekolådan
Provedor de dados: 21
Autores: Milestad, Rebecka; von Oelreich, Jacob.
Fact sheet about a case study in the Healthy growth project
Tipo: Report
Palavras-chave: Markets and trade.
Ano: 2015
URL: http://orgprints.org/28891/1/Factsheet_Sweden_Ekol%C3%A5dan_short%20version_final_proof_read.pdf

The Role of Mulching with Residues of two Medicinal Plants on Weed Diversity in Maize
Provedor de dados: 21
Autores: Kamariari, Iliana; Papastylianou, Panagiota; Bilalis, Dimitrios; Travlos, Ilias; Kakabouki, Ioanna.
In the present study, there were studied the effects of mulch with the residues of two aromatic and medicinal plants (Sideritis scardica Griseb and Echinacea purpurea) on weed flora and first growth of a maize crop. A field and a pot experiment were conducted at Agricultural University of Athens. In particular, the field experiment was conducted under organic conditions, while in the pot experiment special attention was paid to the first growth of maize plants under the effect of plant residues. Our results showed that there was a significant effect of plant residues on weed flora. The incorporation of Sideritis sp. residues resulted to a lower number of different weed species (low richness) and an intense effect on most weed species. During the early...
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop combinations and interactions Cereals; Pulses and oilseeds Weed management.
Ano: 2014
URL: http://orgprints.org/23911/1/23911_MM.pdf

Roots below one meters depth are important for nitrate uptake by annual crops
Provedor de dados: 21
Autores: Kristensen, Hanne L.; Thorup-Kristensen, Kristian.
The root depths of annual crops vary from 0.2 m to more than 2 m depending on root growth rate and length of growing season. However, studies of root growth and N uptake are often restricted to a depth of 1 m or less, as root biomass is assumed to be negligible below this depth. We have studied the importance of root growth and N uptake to a depth of 2.5 m in fully grown field vegetables and cover crops by use of minirhizotrons and deep point placement of 15N. Deep rooted crucifereous crops were found to have high root densities to a depth of 1.5-2 m and high 15N uptake to this depth. The work shows that knowledge of the interactions between root growth and soil N below a depth of 1 m are important to understand crop N uptake and nitrate leaching from...
Tipo: Conference paper, poster, etc.
Palavras-chave: Nutrient turnover; Crop combinations and interactions; Vegetables.
Ano: 2006
URL: http://orgprints.org/11461/1/Deep_Roots_and_N_Uptake.htm

Kropf- und Muskelmageninhalt von Öko-Masthühnern und Legehennen
Provedor de dados: 21
Autores: Lorenz, Carina; Kan, Torsten; Grashorn, Michael.
The objective of this study was to evaluate the variation of feed intake from pasture in organic broilers and in laying hens. In the broiler experiment, in total 288 broilers of breeds Ross 708 (fast growth; FG), Isa 657 (medium growth; MG) and Isa 757 (slow growth, SG) were kept in mixed groups. Between week 7 and 12 of life birds were slaughtered, crops and gizzards were collected and investigated for contents of feed, grit and plant particles. FG broilers had higher feed proportions in crops than MG and SG broilers. Proportions of plant particles have been higher in SG broilers than in MG and FG broilers. SG broilers had higher proportions of plant particles and grit in the gizzard. It is estimated that the proportion of plant particles amounts to 5-10...
Tipo: Conference paper, poster, etc.
Palavras-chave: Animal husbandry; Feeding and growth.
Ano: 2013
URL: http://orgprints.org/21315/1/21315_Grashorn.pdf

Associations between pig leg health and lean meat growth in commercial organic herds
Provedor de dados: 21
Autores: Wallenbeck, A.; Eliasson, C.; Alarik, M.
Sustainable development of organic pig production needs to include both animal welfare and productivity aspects. Knowledge about associations between animal welfare and productivity could be a key for constructive, long-term development of organic as well as conventional pig production systems. Poor leg health is considered a central animal welfare issue in organic pig production in Sweden. The preliminary results presented in this paper indicate that pigs in organic herds with more severe leg problems have poorer lean meat growth. However, the majority of the lame pigs had milder forms of leg problems, which were not found to be associated with lean meat growth.
Tipo: Conference paper, poster, etc.
Palavras-chave: Health and welfare; Pigs.
Ano: 2013
URL: http://orgprints.org/24597/1/24597.pdf

Zur Ausnutzung eines kompensatorischen Wachstumseffektes in der ökologischen Schweinemast
Provedor de dados: 21
Autores: Weißmann, Friedrich; Berk, Andreas; Joost-Meyer zu Bakum, Rudolf.
Due to a lack of organic feed with a high quality amino acid pattern it is difficult to achieve the required Lysine-Metabolisable-Energy-ratio in organic grower diets with the danger of reduced value creation. Hence, the present study should investigate whether a moderate oversupply of lysine in the finisher diet after a marginal lysine supply in the grower diet results in compensatory growth. 96 fattening pigs were divided into four groups characterised by different Lysine-ME-ratios in the grower/finisher diets (Experimental Group: 0.69/0.69; Negative Control Group: 0.69/0.59; Positive Control Group: 0.89/0.69; Regular Control Group: 0.89/0.59). Performance and carcass quality were recorded. The economic success was calculated under varying feed cost...
Tipo: Conference paper, poster, etc.
Palavras-chave: Feeding and growth.
Ano: 2011
URL: http://orgprints.org/17311/3/Weissmann_17311.pdf

The effects of compost and compost extract on soil properties and lettuce growth.
Provedor de dados: 21
Autores: CAVOSKI, Ivana.
The work was conducted at the experimental field of the Mediterranean Agronomic Institute of Bari, Italy in 2004. The aim was to study the effects of compost and compost extract on soil properties and lettuce growth. The chemical, biological and phytotoxic tests of compost extract proved its high  selected soil properties (pH, EC, Organic matter, available nutrients, cations and anions contents) markedly with depth and time, the most prominent changes showed by compost extract application. The applications of compost and compost extract significantly increased lettuce growth, yield, yield components and storage, all were highly significantly influenced by compost. The relation between chlorophyll-meter readings and nitrogen concentration showed highly...
Tipo: Thesis
Palavras-chave: Nutrient turnover; Vegetables; Soil quality; Composting and manuring.
Ano: 2004
URL: http://orgprints.org/6871/1/IvanaCavoski04.pdf

Foder til økologisk regnbueørre-yngel
Provedor de dados: 21
Autores: Ingerslev, Hans-Christian.
Kan vi forbedre sundheden hos ørredyngel ved en optimal fodersammensætning?
Tipo: Newspaper or magazine article
Palavras-chave: Feeding and growth; Health and welfare.
Ano: 2013
URL: http://orgprints.org/24805/6/24805.pdf

Studies on the attractional effect of root exudates on hyphal growth of an arbuscular mycorrhizal fungus in a soil compartment-membrane system
Provedor de dados: 21
Autores: Vierheilig, H.; Alt-Hug, M.; Engel-Streitwolf, R.; Mäder, P.; Wiemken, A.
The effects of tomato and bean rhizospheres on hyphal spreading of the arbuscular mycorrhizal (AM) fungus Glomus mosseae were studied using a soil compartment system in combination with hydrophobic polytetrafluorethylene (PTFE) membranes. Both the nylon screen and the PTFE membrane were freely permeable to hyphae but not to roots. Furthermore, the hydrophobic PTFE membrane seemed to be a barrier to the flux of soil solutions containing root exudates. The results show that water soluble exudates of tomato and bean roots greatly stimulate hyphal growth in the soil compartment system used. Moreover, water soluble root exudates of bean exert a clear attractional effect on AM hyphal growth.
Tipo: Journal paper
Palavras-chave: Soil biology.
Ano: 1998
URL: http://orgprints.org/26774/1/Vierheilig_et_al_1998_PS_1.pdf

Effects of compost tea and organic fertilizers on organic potato
Provedor de dados: 21
Autores: Kochbati, Hela.
The aim of this work is to compare the effects of compost tea and organic fertilizers allowed in organic agriculture on potato growth, development, tuberisation and nutrition (cv. Spunta).Many observations related to agronomic aspects were released as height of plants, diameter of stems, foliar surface, vegetative vigor and evaluation of late blight. The results obtained during the potato development cycle showed us good vegetative growth and tolerance to late blight.Comparison between compost tea produced on farm and commercial organic fertilizers imported costly, in order to characterize the effects of these treatments on potato crop gave us in general similar results regarding the plant growth, yield and plant nutrition. Soil fertility was improved,...
Tipo: Thesis
Palavras-chave: Production systems; Composting and manuring.
Ano: 2003
URL: http://orgprints.org/6862/1/6862.pdf

Managing growth in higher value food chains
Provedor de dados: 21
Autores: Knickel, Karlheinz; Münchhausen, von, Susanne; Vilija, Girgzdiene; Virgilius, Skulskis.
Higher value food chains tend to converge either towards rather narrow market segments and niches or towards conventionalisation and loss in added value when volumes and turnover start growing more significantly. In this paper we will present the findings from a set of case studies of growth in agri-food chains implemented during 2014 in ten European countries, including in Eastern Europe and Turkey. The comparative analysis will help to better understand different development pathways with their particular challenges, management strategies and instruments.
Tipo: Book chapter
Palavras-chave: Farm economics; Markets and trade; Produce chain management.
Ano: 2016
URL: http://orgprints.org/28231/3/Managing%20growth%20in%20food%20chains_Knickel%20et%20al.pdf

Timing of post-emergence weed harrowing
Provedor de dados: 21
Autores: Rasmussen, Jesper; Mathiasen, Helle; Bibby, Bo Martin.
The timing of post-emergence weed harrowing was evaluated  for two years in spring barley with crop-weed selectivity and crop recovery as the key parameters measured. selectivity describes the relationship between weed control and crop soil cover immediately after harrowing, with crop soil cover as the percentage of the crop that has been covered by soil due to harrowing. Crop recovery describes the relationship between crop yield loss and crop soil cover in the absence of weeds. Neither selectivity nor crop recovery  was affected by timing within a period of two weeks in the early growth stages of spring barley. Selectivity was unaffected by year and 80% weed control was associated with crop soil cover in the range of 23–33%, for all combinations of year...
Tipo: Journal paper
Palavras-chave: Weed management.
Ano: 2010
URL: http://orgprints.org/17844/4/17844.pdf

Biological profitability of maize inoculation with selected rhizosphere micro organisms (Pseudomonas fluorescens and Glomus intraradices) under Water Deficit Stress
Provedor de dados: 21
Autores: Aghaalikhani, Dr. Majid; Ehteshami, Dr. Seyyed Mohammad Reza.
This research focused on evaluating the usefulness of an arbuscular mycorrhizal fungus (Glomus intraradices) and a plant growth-promoting rhizobacterium (Pseudomonas fluorescens) to maize growth under water deficit stress. Field experiment was conducted at Soil and water research institute, Karaj Station, Iran, during 2006 growing season.  Biological positive effects of the micro organisms  on plant growth, nutrient uptake, grain yield and yield components in maize plants was recorded in the treatment receiving mixed inoculums of G. intraradices  and P. fluorescens.  Maize shoot  P content, grain yield, yield components, harvest index, grain N and P, soil available P, root colonization percentage and water use efficiency increased significantly with the G....
Tipo: Conference paper, poster, etc.
Palavras-chave: Soil biology; Irrigation and drainage.
Ano: 2008
URL: http://orgprints.org/11833/1/Aghaalikhani_11833_ed.doc

ORMILKQUAL, presentation of project
Provedor de dados: 21
Autores: Larsen, Mette Krogh.
Overall presentation of ORMILKQUAL project
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop combinations and interactions Food security; Food quality and human health Feeding and growth.
Ano: 2010
URL: http://orgprints.org/19692/2/19692.pdf

Subsoil loosening eliminated plough pan but had variable effect on crop yield
Provedor de dados: 21
Autores: Munkholm, Lars J.; Olesen, Jørgen E.; Schjønning, Per.
The effect of subsoil loosening to c. 35 cm depth was studied in an organic crop rotation experiment at Flakkebjerg (sandy loam) and Foulum (loamy sand). In each of the years 2000-2003 half of 4 plots per site was loosened in the autumn in a young grass-clover. Penetration resistance was recorded yearly. Detailed soil physical properties were determined for the Foulum site in 2003. Aboveground winter wheat growth was followed during the 2002/03 growing season using spectral reflectance measurements. Root growth was followed during the 2002/03 growing season at Foulum using the minirhizotron technique. Crop yield was determined every year in all treated plots. The Paraplow treatment effectively loosened the plough pan. Loosening in the grass-clover crop...
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop health; Quality; Protection Crop combinations and interactions Soil quality Soil tillage.
Ano: 2005
URL: http://orgprints.org/7824/1/7824.doc

Fitoterapia en ganadería
Provedor de dados: 21
Autores: Escribano, A.J.
Introduction about the application of phytotherapy in organic livestock farming. An educational preliminary approach.
Tipo: Conference paper, poster, etc.
Palavras-chave: Production systems; Feeding and growth; Health and welfare; Knowledge management.
Ano: 2011
URL: http://orgprints.org/29563/1/PRO004.pdf

Incompatibility between fertility building measures and the  management of perennial weeds in organic cropping systems
Provedor de dados: 21
Autores: Melander, Bo; Rasmussen, Ilse A.; Olesen, Jørgen E.
Fertility building measures are important components in improving the productivity of organic cropping  systems without livestock. However, some measures seem to be incompatible with the control of  perennial weeds that can have adverse effects such as significant weed competition. The influence of  fertility building measures (N2-fixing crops in the crop sequence, cover crops and manuring) and the  abundance of perennial weeds were studied in a long-term crop rotation experiment at two locations in  Denmark. The aim was to gain insight into the factors that influence the growth of perennial weed species  occurring in mixed stands. Data were obtained from three cycles of four-year arable crop rotations  comprising various cash crops in rotations with and...
Tipo: Journal paper
Palavras-chave: Weed management.
Ano: 2016
URL: http://orgprints.org/29791/1/Published_paper.pdf

The Success and Failure of Australia’s Organic Agriculture
Provedor de dados: 21
Autores: Paull, John.
Two recently published maps of the world of organic agriculture reveal Australia’s bold success as well as its disappointing failure.Firstly there is the ‘Fat Australia’ map that shows the leadership position of Australia in the world of organic agriculture. Australia has more certified organic hectares than any other country. It accounts for 32% of the world’s total. In the organic projection of the world, country areas are proportional to reported certified organic agriculture hectares. Argentina holds the second place. Europe is well represented, as are China and India, while Africa shrinks in the organics projection. But the ‘Slow-grow Australia’ map shows Australia lagging the world in the rate of growth of the organics sector. Australia has been...
Tipo: Journal paper
Palavras-chave: "Organics" in general; Australia; World; Knowledge management.
Ano: 2012
URL: http://orgprints.org/20948/4/Paull2012Maps.Acres.pdf

Localized application of sewage sludge improved plant nitrogen and phosphorus uptake by rhizobox-grown spring wheat
Provedor de dados: 21
Autores: Wang, Yaosheng; Stoumann Jensen, Lars; Magid, Jakob.
Sewage sludge (SS) can be used as an alternative fertilizer in agriculture. It is normally broad- casted and plowed into soil, but it is not clear if it has a potential as a placement fertilizer. A rhizo- box experiment was conducted to investigate the placement effect of SS and mineral nitrogen (N) fertilizer on shoot and root growth as well as nutrient uptake of spring wheat (Triticum aesti- vum L.). The treatments included localized SS, mixed SS, localized SS and ammonium, local- ized ammonium, and a control without addition of SS and ammonium to examine the effect of SS placement and, further, if ammonium co-localization would enhance the placement effect. The re- sults show that SS fertilization improved soil N and P availability, which significantly...
Tipo: Journal paper
Palavras-chave: Composting and manuring; Nutrient turnover.
Ano: 2016
URL: http://orgprints.org/30701/1/Wang%20Localized%20application%20JPNSS%202016.pdf

Global area and trends of organic fruit production
Provedor de dados: 21
Autores: Granatstein, D.; Kirby, E.; Willer, H.
Growth of the organic food market slowed in 2009 in response to global economic stresses. Markets in Europe were more affected than in the USA, but sales still expanded in these two dominant markets. Organic fruit and vegetable sales in the USA maintained about 11% growth from 2008 to 2011. Overall, the global area of organic fruit (converted and in conversion) was over 648,000 ha in 2010, accounting for 7% of organically-managed arable and permanent crop land. Leading fruits were grapes and tropical and subtropical fruits, accounting for 34 and 29% of all organic fruit area in 2010. An estimated 56% of the total world organic fruit production area was in Europe, with grapes the leading crop. Over 6% of the grape hectarage in Italy was certified organic or...
Tipo: Conference paper, poster, etc.
Palavras-chave: Markets and trade; Fruit and berries.
Ano: 2013
URL: http://orgprints.org/23577/1/granatstein-etal-2013-actahorti-1001-p383-394.pdf

Inoculation affects nitrogen balances of composts and growth, yield and microflora of Phaseolus beans
Provedor de dados: 21
Autores: Sangakkara, Dr Ravi; Weerasekera, Mr Danesh; Attanayake, Mr K B; Attanayake, Ms A M U.
The impact of organic matter and two types of inoculums on composting and subsequent growth of common beans was evaluated under tropical field conditions. The composts were made of commonly available organic matter with different C:N ratios, and inoculums consisting of  cattle manure slurry, Effective Micro organisms or a mixture of both were added. The  mixture of cattle manure and Effective Microorganisms increased N availability and reduced C: N ratios of compost than when applied individually. Legume green matter enhanced compost quality and growth yields. The nodulation and mycorrhizal populations of roots of beans were increased by a mixture of inoculums and using diverse materials in the compost. The usefulness of inoculums such as EM, which is...
Tipo: Conference paper, poster, etc.
Palavras-chave: Composting and manuring.
Ano: 2008
URL: http://orgprints.org/12526/1/Sangakkara_12526_ed.doc

Wasserlinsen als Forellenfutter
Provedor de dados: 21
Autores: Stadtlander, Timo.
Taugen Wasserlinsen als Proteinquelle in Fischfutter? Die Ergebnisse eines FiBL-Versuchs zeigen das Potenzial auf.
Tipo: Newspaper or magazine article
Palavras-chave: Feeding and growth; Aquaculture.
Ano: 2017
URL: http://orgprints.org/31631/1/bioaktuell-stadtlander-3.pdf

Beim Silieren das Unheil abwenden
Provedor de dados: 21
Autores: Hirschi, Christian.
Silieren ist eine lohnende Futterkonservierungsmethode. Für ein gutes Ergebnis im biologischen Landbau braucht es besondere Aufmerksamkeit.
Tipo: Newspaper or magazine article
Palavras-chave: Feeding and growth.
Ano: 2018
URL: http://orgprints.org/33803/1/Bioaktuell_6_2018_Ch.Hirschi.pdf

BIOCONVAL
Provedor de dados: 21
Autores: Nordentoft, S.
Integreret larveproduktion til foder i økologisk ægproduktion
Tipo: Conference paper, poster, etc.
Palavras-chave: Feeding and growth; Farm nutrient management.
Ano: 2011
URL: http://orgprints.org/20072/1/Bioconval_Status_2011.pdf

Testing of pear trees on their own roots in comparison with important used rootstocks under organic farming conditions with special regard to fire blight (E. amylovora)
Provedor de dados: 21
Autores: Spornberger, A.; Brunmayer, R.; Fischer, G.; Kaufmann, C.; Osterc, G.
Pear trees on their own roots are tested in comparison to grafted trees in growth and yield  characteristics and with special regard to the tolerance to diseases, above all fire blight  (Erwinia amylovora). In spring 2004 15 randomized trees of the cultivar 'Williams' from  three variants (self rooted in vitro, self rooted long cuttings, grafted on Quince A) were  planted in a pear orchard, which was heavily infected with fire blight (Erwinia amylovora)  the previous years. The trees were left untreated. Growth and yield characteristics, plant  diseases and tree losses were observed. After four years the in vitro self rooted trees were  significantly more vigorous in growth than those grafted on quince A. The self rooted long  cuttings were comparable in...
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop health; Quality; Protection Fruit and berries.
Ano: 2008
URL: http://orgprints.org/13683/1/216%2D219.pdf

Scottish Agricultural College (SAC): Free range poultry research facilities
Provedor de dados: 21
Free-range (replicated) poultry unit, controlled environment growth rooms, hatchery, processing plant and feed mill.
Tipo: Research facility description
Palavras-chave: Poultry.
Ano: 2023

Vertrauen stärken
Provedor de dados: 21
Autores: Schermer, Markus.
Bericht zu den Ergebnissen von HealthyGrowth, insbesonders zum Bereich der Kommunikation in indirekten Vermarktugswegen
Tipo: Newspaper or magazine article
Palavras-chave: Markets and trade; Produce chain management.
Ano: 2016
URL: http://orgprints.org/30749/1/BioAustriaZeitung_Artikel_Schermer.docx

Different compost fertilizations on growth, yield and quality of Organic Melon in Venezuela
Provedor de dados: 21
Autores: Perez-H, Elimar; Pina, Ruben; Rodriguez, Josefina; Ramirez-Guerrero, Hugo.
An experiment was set up at the agricultural community “Montana Verde” (9º 52’ N, 67º 9’ W) in Torres county of Lara State, Venezuela to study the effect of five organic fertilization plans on the growth and productivity of a melon crop (Cucumis melo L.) in an organic cultivation system. Treatments consisted of five fertilization plans (i) 10 Mg ha-1 goat manure compost (GMC), (ii) 25 Mg ha-1 cattle manure compost (CMC), (iii) 35 Mg ha-1 goat manure vermicompost (GMV),  (iv) 21 Mg ha-1 sugarcane filtercake compost (FCC) and (v) control without any fertilizer (Control).  The growth and melon productivity was higher from plots managed under the fertilization plan using animal wastes (manure), mainly goat manure vermicomposted by the earthworm Eisenia foetida.
Tipo: Conference paper, poster, etc.
Palavras-chave: Vegetables.
Ano: 2005
URL: http://orgprints.org/4443/4/Perez_etal_2005_melon_4p_revised%2Ded.doc

Growth and carcass quality of suckler calves grazing at the farm or in the mountain
Provedor de dados: 21
Autores: Steinshamn, Håvard; Höglind, Mats; Havrevoll, Øystein; Saarem, Kristin; Lombnæs, Inger Helene; Svendsen, Asgeir.
The objective was to examine the effect of mountain grazing on the growth and meat quality of suckler calves. Suckler calves with their dams were raised on either cultivated pasture (C) or free range on mountain/forest pasture (M) on four and five commercial farms in 2006 and 2007, respectively. The M included different vegetation types from open, grass-dominated meadows to forests with patches of grasses, herbs and shrubs among the trees. All calves were slaughtered at the end of the grazing season at an average age of 203 (2006) and 193 days (2007). On average, there was no effect of pasture type on production traits except for carcass fatness that was higher on M than on C. In 2006, significantly higher live weight gain and carcass weight were found in...
Tipo: Conference paper, poster, etc.
Palavras-chave: Feeding and growth; Beef cattle.
Ano: 2008
URL: http://orgprints.org/13812/1/Steinshamn_etal_2008.pdf

Organically fertilized plants can manage water-limited growth conditions better than minerally fertilized plants. Results from a multi-year experiment
Provedor de dados: 21
Autores: Raupp, J.; Oltmanns, M.
Since 1980 a field trial is carried out on a sandy soil under dry-warm climate conditions (590 mm annual precipitation, 9.5°C annual mean air temperature) comparing farmyard manure with and without biodynamic preparations and mineral fertilizer, each treatment at three application rates between 60 and 140 kg total nitrogen per hectare. The amount of water available in June was a relevant yield determining factor (p&lt;0.05) only for minerally fertilized wheat. During 13 years the manure fertilized wheat yielded between 30 and 50 dt ha-1, irrespective to water availability. Manure fertilization gave lower maximum yields but higher minimum yields showing a better yield stability. With manure fertilization the wheat plants realized a better harvest index of...
Tipo: Conference paper, poster, etc.
Palavras-chave: Cereals; Pulses and oilseeds Soil biology Composting and manuring.
Ano: 2008
URL: http://orgprints.org/16099/1/ciec08_sw.pdf

Growth of ‘M9’ apple root in five Central Europe replanted soils
Provedor de dados: 21
Autores: Polverigiani, Serena; Kelderer, Markus; Neri, Davide.
Soil sickness is a widespread problem in replanted apple orchards with a complex symptomatology and etiology influenced by soil and climate conditions. Consequently, a conclusive technical solution is still lacking for intensive apple orchards. The present work aims to analyze the morphological and functional changes occurring in the M9 apple root systems growing in pot filled with soil derived from five different European growing areas. For each growing area, the soil was collected from the apple orchard and used directly in the pot or gamma-ray sterilized before potting. Soil from a neighborhood fallow was also used as control for each growing area. In the non-sterilized replant soils plants developed poor root systems due to a limited biomass...
Tipo: Journal paper
Palavras-chave: Fruit and berries Crop health; Quality; Protection.
Ano: 2014
URL: http://orgprints.org/27995/1/plant%20root%20polv%20keld%20neri.pdf

EVALUATION OF DIFFERENT RATES OF JATHROPHA (Jathropha curcas) SEED CAKE ON THE GROWTH OF AMARANTHUS CAUDATUS
Provedor de dados: 21
Autores: Olowoake, Adebayo A.
A field experiment was conducted at Kwara State University Teaching and Research Farm, Malete, Kwara State, Nigeria to evaluate the performance of different rates of Jathropha seed cake on the growth and yield of Amaranthus caudatus. The five treatments tested were; 3 Jathropha seed cake application rates (2.0, 2.5 and 3.0 t/ha), NPK at 100kg N/ha and control. The treatments were laid out in a randomized complete block design with three replications. Growth and yield parameters such as plant height, number of leaves, stem girth and fresh weight were taken. The results (p&lt;0.05) indicated that application of Jathropha seed cake at 2.5 t/ha produced taller plants more profuse leaves and higher shoot fresh weight compared to NPK or the control treatment. In...
Tipo: Conference paper, poster, etc.
Palavras-chave: Soil.
Ano: 2014
URL: http://orgprints.org/23246/1/23246%20Olowoake_MM.pdf

FruitGrowth - Nye Økologiske løsninger sikrer fremtidig vækst
Provedor de dados: 21
Autores: Williams, Michelle.
Den økologiske produktion af æbler i Danmark er lille og ustabil på grund af udbytte- og kvalitetstab forårsaget af  skadedyr og sygdomme.    Projektet fokuserer på sunde sorter af æbler, nye innovative metoder til ukrudtsbekæmpelse, samt udvidelse af sæsonen og dermed udbuddet og tilgængeligheden af æbler ved ny teknologi ved lagring. Der arbejdes med løsninger på kort- og langt sigt for de alvorligste skadevoldere (æblevikler, æblebladhvepse og æbleskurv, nyttedyr i blomsterbræmmer, samt naturstoffer til bekæmpelse af de alvorligste skadevoldere.
Tipo: Web product
Palavras-chave: Food security; Food quality and human health Fruit and berries Breeding; Genetics and propagation Crop health; Quality; Protection Weed management Post harvest management and techniques.
Ano: 2011
URL: http://orgprints.org/20329/4/20329.pdf

NO-CAST
Provedor de dados: 21
Autores: Jensen, B.B.
Økologisk svineproduktion 2014 – uden kastration.
Tipo: Conference paper, poster, etc.
Palavras-chave: Feeding and growth; Pigs.
Ano: 2011
URL: http://orgprints.org/20070/1/No_cast_Status_2011.pdf

Facilitative root interactions in intercrops
Provedor de dados: 21
Autores: Hauggaard-Nielsen, Henrik; Jensen, Erik Steen.
Facilitation takes place when plants ameliorate the environment of their neighbours, and increase their growth and survival. Facilitation occurs in natural ecosystems as well as in agroecosystems. We discuss examples of facilitative root interactions in intercropped agroecosystems; including nitrogen transfer between legumes and non-leguminous plants, exploitation of the soil via mycorrhizal fungi and soil-plant processes which alter the mobilisation of plant growth resources such as through exudation of amino acids, extra-cellular enzymes, acidification, competition-induced modification of root architecture, exudation of growth stimulating substances, and biofumigation. Facilitative root interactions are most likely to be of importance in nutrient poor...
Tipo: Journal paper
Palavras-chave: Crop combinations and interactions.
Ano: 2005
URL: http://orgprints.org/4054/1/4054.pdf

Publikationsliste Alberta Velimirov
Provedor de dados: 21
Autores: Velimirov, Alberta.
Publikationen von 1992-2006
Tipo: Other
Palavras-chave: Food security; Food quality and human health Feeding and growth.
Ano: 2006
URL: http://orgprints.org/9032/1/Velimirov%2D2006%2Dpublikationsliste.pdf

Presentation of Organic Eprints
Provedor de dados: 21
Autores: Rasmussen, Ilse A.
Presentation at training for the Productivity and Growth in Organic Value-chains (ProGrOV) project
Tipo: Teaching resource
Palavras-chave: Technology transfer; Research communication and quality.
Ano: 2011
URL: http://orgprints.org/19429/4/19429.pdf

Die Mastleistung und Schlachtkörperqualität unterschiedlicher genetischer Schweineherkünfte in konventioneller und ökologischer Haltung
Provedor de dados: 21
Autores: Werner, Daniela; Brandt, Horst; Quanz, Gerhard.
A study was conducted to examine growth and carcass composition of genetically different pigs under conventional and organic conditions. The pig genotypes were Bundeshybridzuchtprogramm (BHZP), Schwäbisch Hällisches Schwein (SH), Angler Sattelschwein (AS), Piétrain x SH (PIxSH), Piétrain x AS (PIxAS), Piétrain x Deutsches Edelschwein (PIxDE) and Duroc x Deutsche Landrasse (DUxDL). A total number of 650 pigs were kept at two test stations. This paper presents results of the test station Neu-Ulrichstein where the genotypes BHZP, SH and PIxSH were tested. Growth and carcass chracteristics of 80 pigs per environment (conventional housing and feeding vs. organic housing and feeding) were analysed using a linear model including the fixed effects of sex,...
Tipo: Conference paper, poster, etc.
Palavras-chave: Pigs; Breeding and genetics.
Ano: 2007
URL: http://orgprints.org/9343/1/9343_Werner_Vortrag.pdf

Preliminary study on temperatures for the development of Valsa ceratosperma
Provedor de dados: 190
Autores: Auer, Celso Garcia; Krugner, Tasso Leo.
The growth of Valsa ceratosperma (Tode:Fr.) Maire was analyzed under axenic conditions at several temperatures. An isolate obtained from cankers on trunks of Eucalyptus grandis was inoculated on Petri dishes with PDA medium with plugs of mycelium-agar and incubated under temperatures of 10, 15, 20, 25, 30, 35 and 40 ºC. The growth was evaluated based on linear growth rate of colony (mm/day). The development of V. ceratosperma occurred in the 15 to 35 °C range and the higher rate was verified at 30 °C.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eucalyptus; Fungus; Growth Crescimento; Eucalyptus; Fungo.
Ano: 2004
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1601

In vitro conservation of blackberry genotypes under minimal growth conditions and subsequent large-scale micropropagation
Provedor de dados: 86
Autores: Gomes,Hugo Teixeira; Bartos,Patrícia Monah Cunha; Andrade,Maíra Teixeira de; Almeida,Raphael Ferreira; Lacerda,Luciana Florencio de; Scherwinski-Pereira,Jonny Everson.
Abstract: The objective of this work was to evaluate the micropropagation of blackberry (Rubus spp.) cultivars, after in vitro conservation under minimal growth conditions. Nodal segments of the 'Guarani', 'Caingangue', 'Ébano', and 'Xavante' genotypes were conserved under minimal growth conditions at 20ºC, for 15 months. Microshoots were regenerated and multiplied by up to five successive subcultures, when they were rooted and acclimatized. After 30 days of acclimatization in a greenhouse, rooted plantlets showed no significant losses. Blackberry cultivars can be conserved in vitro for 15 months, without subcultures and, after this time, they can be micropropagated on a large-scale, maintaining the regenerative potential and multiplication.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rubus; Ex situ conservation; Plant genetic resources; Plant propagation; Slow-growth.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001201286

Growth and quality of potted ornamental peppers treated with paclobutrazol
Provedor de dados: 86
Autores: França,Christiane de Fátima Martins; Ribeiro,Wellington Souto; Santos,Mirelle Nayana Sousa; Petrucci,Kharen Priscilla de Oliveira Salomão; Rêgo,Elizanilda Ramalho do; Finger,Fernando Luiz.
Abstract: The objective of this work was to evaluate the action of paclobutrazol (PBZ) on the growth and ornamental value of two pepper accessions and two commercial cultivars of ornamental pepper - Biquinho Vermelha and Bode Amarela. A PBZ aqueous solution (250 mL) was used to soak the substrate at 0, 20, 40, and 60 mg L-1 a.i. concentrations when the plants had 12 cm height. At the end of plant growth, the follwoing parameters were evaluated: plant height, chlorophyll content in leaves, number of fruit and leaves, and canopy compactness at the time the plants reached maturity to be marketed, with 30% of ripe fruit. Irrespective of the applied PBZ concentration, plant height diminished, and chlorophyll content increased. PBZ did not improve the ornamental...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capsicum annuum; Capsicum chinense; Chlorophyll; Growth regulator.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000300316

Fungicidal effect of silver nanoparticles on toxigenic fungi in cocoa
Provedor de dados: 86
Autores: Villamizar-Gallardo,Raquel; Cruz,Johann Faccelo Osma; Ortíz-Rodriguez,Oscar Orlando.
Abstract: The objective of this work was to evaluate the microbicidal effect of silver nanoparticles (AgNPs) on potentially toxigenic fungi affecting cocoa (Theobroma cacao) crops. These fungi, isolated from diseased cocoa pods, were characterized phenotypically and genotypically. The microbicidal effect was assessed by measuring radial mycelial growth, in synthetic culture media, and at different AgNP concentrations in plant tissues. The inhibition effect was monitored in Petri dishes, and changes in fungal structures were observed through scanning electron microscopy. Two potentially toxigenic fungi were highly prevalent: Aspergillus flavus and Fusarium solani. The inhibition assays, performed in liquid and solid synthetic culture media, showed that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aspergillus flavus; Fusarium solani; Theobroma cacao; Alternative control; Agri-food nanotechnology; Ochratoxin A.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016001201929

In vitro conservation of Piper aduncum and Piper hispidinervum under slow-growth conditions
Provedor de dados: 86
Autores: Silva,Tatiane Loureiro da; Scherwinski-Pereira,Jonny Everson.
The objective of this work was to evaluate in vitro storage of Piper aduncum and P. hispidinervum under slow-growth conditions. Shoots were stored at low temperatures (10, 20 and 25°C), and the culture medium was supplemented with osmotic agents (sucrose and mannitol - at 1, 2 and 3%) and abiscisic acid - ABA (0, 0.5, 1.0, 2.0 and 3.0 mg L-1). After six-months of storage, shoots were evaluated for survival and regrowth. Low temperature at 20ºC was effective for the in vitro conservation of P. aduncum and P. hispidinervum shoots. In vitro cultures maintained at 20ºC on MS medium showed 100% survival with slow-growth shoots. The presence of mannitol or ABA, in the culture medium, negatively affected shoot growth, which is evidenced by the low rate of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ex situ conservation; Germplasm bank; Micropropagation.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000400007

Growth of Crassostrea gasar cultured in marine and estuary environments in Brazilian waters
Provedor de dados: 86
Autores: Lopes,Gustavo Ruschel; Gomes,Carlos Henrique Araujo de Miranda; Tureck,Cláudio Rudolfo; Melo,Claudio Manuel Rodrigues de.
The objective of this work was to evaluate the growth of the mangrove oyster Crassostrea gasar cultured in marine and estuarine environments. Oysters were cultured for 11 months in a longline system in two study sites - São Francisco do Sul and Florianópolis -, in the state of Santa Catarina, Southern Brazil. Water chlorophyll-α concentration, temperature, and salinity were measured weekly. The oysters were measured monthly (shell size and weight gain) to assess growth. At the end of the culture period, the average wet flesh weight, dry flesh weight, and shell weight were determined, as well as the distribution of oysters per size class. Six nonlinear models (logistic, exponential, Gompertz, Brody, Richards, and Von Bertalanffy) were adjusted to the oyster...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mangrove oyster; Mariculture; Nonlinear models.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013000800027

Growth, mineral composition, fruit yield, and mycorrhizal colonization of feijoa in response to lime and phosphorus application
Provedor de dados: 86
Autores: Nava,Gilberto; Santos,Karine Louise dos; Costa,Murilo Dalla; Ciotta,Marlise Nara.
Abstract: The objective of this work was to investigate the effect of liming and phosphorus fertilization on the growth, mineral composition of the leaves, fruit yield, and mycorrhizal colonization of young feijoa (Acca sellowiana) plants. Treatments consisted of four liming levels - 0, 25, 50, and 100% of the dose required to raise the soil pH to 6.5 - and of five levels of P - 0, 60, 120, 180, and 240 kg ha-1 P2O5 -, placed in a randomized complete block design, in a split-plot arrangement, with three replicates. The orchard was established in 2010 with the Helena cultivar. In 2012, 2013, and 2014, plant growth was evaluated by measuring trunk perimeter, plant height, and tree canopy width. Mineral composition of the leaves, regarding P, N, K, Ca, and Mg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acca sellowiana; Mineral nutrition; Mycorrhizal colonization; Nutritional status; Phosphorus fertilization; Soil acidity.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000800942

Gas exchange rates, plant height, yield components, and productivity of upland rice as affected by plant regulators
Provedor de dados: 86
Autores: Alvarez,Rita de Cássia Félix; Crusciol,Carlos Alexandre Costa; Nascente,Adriano Stephan; Rodrigues,João Domingos; Habermann,Gustavo.
The objective of this work was to evaluate gas exchange rates, plant height, yield components, and productivity of upland rice, as affected by type and application time of plant growth regulators. A randomized block design, in a 4x2 factorial arrangement, with four replicates was used. Treatments consisted of three growth regulators (mepiquat chloride, trinexapac-ethyl, and paclobutrazol), besides a control treatment applied at two different phenological stages: early tillering or panicle primordial differentiation. The experiment was performed under sprinkler-irrigated field conditions. Net CO2 assimilation, stomatal conductance, plant transpiration, and water-use efficiency were measured four times in Primavera upland rice cultivar, between booting and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oryza sativa; Net photosynthesis; Stomatal conductance; Transpiration; Water-use efficiency.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012001000007

Effect of growth regulators on 'Brookfield' apple gas diffusion and metabolism under controlled atmosphere storage
Provedor de dados: 86
Autores: Brackmann,Auri; Thewes,Fabio Rodrigo; Anese,Rogerio de Oliveira; Both,Vanderlei.
The objective of this work was to evaluate the effect of growth regulators on gas diffusion and on metabolism of 'Brookfield' apple, and to determine their correlation with quality characteristics of fruit stored in controlled atmosphere. A completely randomized design was used with four replicates. After eight months of storage, the effects of water (control), aminoethoxyvinylglycine (AVG), AVG + ethephon, AVG + naphthaleneacetic acid (NAA), ethephon + NAA, sole NAA, 1-MCP, ethylene absorption by potassium permanganate (ABS), AVG + ABS, and of AVG + 1-MCP - applied at different rates and periods - were evaluated on: gas diffusion rate, ethylene production, respiratory rate, internal ethylene concentration, internal CO2 content, mealiness, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malus domestica; Aminoethoxyvinylglycine; Ethylene absorption; Fruit quality; 1-methylcyclopropene.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000500323

Growth, biomass, and energy quality of Acacia mangium timber grown at different spacings
Provedor de dados: 86
Autores: Tonini,Helio; Schwengber,Dalton Roberto; Morales,Marina Moura; Magalhães,Ciro Augusto de Souza; Oliveira,Jane Maria Franco de.
Abstract: The objective of this work was to assess the effect of spacing on the growth, biomass allocation, and wood quality for energy purposes of Acacia magium. A randomized complete block design was carried out with three replicates and five treatments consisting of trees planted at different spacings: 2.0x2.0, 2.5x2.5, 3.0x2.0, 3.0x2.5, and 3.0x3.0 m. At 67 months after planting, the following species parameters were evaluated: performance (mortality, diameter growth, height, bark factor, and bark and biomass volume yield) and wood energy quality (basic density, higher-calorific value, ash, fixed carbon, and volatile materials) through the analysis of variance. Plant spacing did not affect volume and biomass production per hectare nor wood quality for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon; Biomass accumulation; Energy productivity; Forest plantation; Roraima.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000700791

Growth regulator and maize response to the increase in plant density
Provedor de dados: 86
Autores: Leolato,Lucieli Santini; Sangoi,Luis; Durli,Murilo Miguel; Panison,Fernando; Voss,Ramon.
Abstract: The objective of this work was to evaluate the effect of application of the growth regulator Trinexapac-ethyl on maize response to the increase in plant density at two sowing dates. A field experiment was carried out in the municipality of Lages, state of Santa Catarina, Brazil, during the 2014/2015 and 2015/2016 growing seasons. Two sowing dates (10/15 - preferential, and 12/5 - late), four plant densities (5, 7, 9, and 11 plants m-2), with and without Trinexapac-ethyl application, were tested. The growth regulator was sprayed at a rate of 150 g a.i. ha-1, when hybrid P30F53YH was at the V5 and V10 growth stages. The spraying of Trinexapac-ethyl decreased the stem length above the ear insertion node at both growing seasons. Grain yield ranged...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Grain yield; Trinexapac-ethyl.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001100997

Insulin-like growth factor and growth hormone receptor in postpartum lactating beef cows
Provedor de dados: 86
Autores: Schneider,Augusto; Pfeifer,Luiz Francisco Machado; Hax,Lucas Teixeira; Paludo,Giane Regina; Pino,Francisco Augusto Burkert Del; Dionello,Nelson José Laurino; Corrêa,Marcio Nunes.
The objective of this study was to evaluate the plasma concentrations of insulin-like growth factor-I (IGF-I), and the mRNA hepatic expression of IGF-I and of the growth hormone receptors GHR and GHR 1A, in postpartum beef cows. Four Angus and four crossbred (Angus x Nelore) postpartum suckled beef cows were used. Liver and blood samples were collected every 10 days, from calving to 40 days postpartum, for gene expression and for β-hydroxybutyrate and IGF-I assays, respectively. Samples for progesterone assay were collected every other day, from day 10 to 40 postpartum. Three cows ovulated before 40 days postpartum. IGF-I concentration was higher in Angus x Nelore than in Angus cows. There was no difference in the expression of GHR, GHR 1A and IGF-I...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bos indicus; Bos taurus; GHR; IGF-I; MRNA hepatic expression; Ovulation.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010000800019

Prohexadione calcium on the growth and quality of eggplant seedlings
Provedor de dados: 86
Autores: Ozbay,Nusret; Ergun,Nazan.
Abstract:The objective of this work was to evaluate the effects of prohexadione calcium concentrations on the growth and quality of eggplant (Solanum melongena) seedlings. The effects of prohexadione calcium concentrations of 0, 50, 100, or 150 mg L-1 on seedling growth parameters were evaluated in a greenhouse experiment. After the greenhouse experiment, the seedlings were transplanted to the field. During the field experiment, the number of days to flowering, plant height, number of fruits per plant, average fruit weight and yield were evaluated. Both experiments were carried out in a completely randomized design with four replicates. All prohexadione calcium concentrations significantly reduced shoot height and internode length, when compared to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum melongena; Growth retardant; Seedling height control.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015001000932

Detrimental effect of rutin on Anticarsia gemmatalis
Provedor de dados: 86
Autores: Hoffmann-Campo,Clara Beatriz; Ramos Neto,José Augusto; Oliveira,Maria Cristina Neves de; Oliveira,Lenita Jacob.
Behavioral and nutritional effect of rutin (quercetin 3-O-rutinosídeo) on Anticarsia gemmatalis Hübner (Lep.: Noctuidae), a major soybean defoliator in Brazil, was evaluated from the third instar to pupation. Rutin is one of the flavonol glycosides identified in the leaves of the wild soybean PI 227687. Larval weight and amount of ingested food decreased as rutin concentration in the diet increase. An interactive effect between feeding time and diet (treatment) was observed on insect growth; when larvae fed on pure-diet, feeding time elongation resulted in heavier pupae. Differently, the weight of larvae fed on rutin-diet remained almost stable, in spite of eating for longer. A. gemmatalis growth was negatively influenced by rutin-diet not only by feeding...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Feeding deterrence; Insect nutrition; Flavonol glycoside; Lepidoptera.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2006001000001

Growth and yield of teak stands at different spacing
Provedor de dados: 86
Autores: Medeiros,Reginaldo Antonio; Paiva,Haroldo Nogueira de; D’Ávila,Flávio Siqueira; Leite,Helio Garcia.
Abstract: The objective of this work was to evaluate the growth and yield of teak (Tectona grandis) stands at different spacing and in different soil classes. Twelve spacing were evaluated in an Inceptisol and Oxisol, in plots with an area of 1,505 or 1,548 m2, arranged in a completely randomized design with nine replicates. The teak trees were measured at 26, 42, 50, and 78 months of age. Total tree height was less affected by spacing. Mean square diameter was greater in wider spacing, whereas basal area and total volume with bark were greater in closer spacing. An increase in volume with bark per tree was observed with the increase of useful area per plant. For teak trees, growth stagnation happens earlier, the growth rate is higher in closer spacing,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tectona grandis; Initial spacing; Modeling.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018001001109

Plant growth and phosphorus uptake in mycorrhizal rangpur lime seedlings under different levels of phosphorus
Provedor de dados: 86
Autores: Nogueira,Marco Antonio; Cardoso,Elke Jurandy Bran Nogueira.
The objective of this work was to evaluate the response of rangpur lime (Citrus limonia) to arbuscular mycorrhiza (Glomus intraradices), under P levels ranging from low to excessive. Plants were grown in three levels of soluble P (25, 200 and 1,000 mg kg-1), either inoculated with Glomus intraradices or left noninoculated, evaluated at 30, 60, 90, 120 and 150 days after transplanting (DAT). Total dry weight, shoot P concentration and specific P uptake by roots increased in mycorrhizal plants with the doses of 25 and 200 mg kg-1 P at 90 DAT. With 1,000 mg kg-1 P, mycorrhizal plants had a transient growth depression at 90 and 120 DAT, and nonmycorrhizal effects on P uptake at any harvesting period. Root colonization and total external mycelium correlated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus; Glomus; Active external mycelium; Growth depression; Rootstock; Total external mycelium.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2006000100013

Potato crop growth as affected by nitrogen and plant density
Provedor de dados: 86
Autores: OLIVEIRA,CARLOS ALBERTO DA SILVA.
Growth and development variables and dry matter characteristics were studied for cultivar Snowden of potato (Solanum tuberosum L.) to evaluate nitrogen and plant density influence. Disregarding ending of season plant stress, the average number of actives haulms per plant was five and it was not affected by plant spacing. However, seasonal and final number of active haulms per plant were increased at 200 kg/ha of nitrogen. Maximum stem elongation was reached quickly with double density and had the tendency to keep constant at the highest and lowest nitrogen levels after 70 days after planting. Specific stem mass defined as mass per unit stem length was established as an indirect measure of stem thickness and load capacity. Specific leaf mass position in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Snowden cultivar; Plant nutrition; Canopy; Leaf area; Tubers; Stems; Dry matter; Plant population.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2000000500011

Calcium anacardate as growth promoter for piglets at the nursery phase
Provedor de dados: 86
Autores: Matos,Amanda Veruska Silva de; Watanabe,Pedro Henrique; Freitas,Ednardo Rodrigues; Santos,Kassia Moreira; Araújo,Lina Raquel Santos; Nepomuceno,Rafael Carlos; Vieira,Alini Mari; Vieira,Eloisa Helena Mendes.
Abstract: The objective of this work was to evaluate the effects of the dietary inclusion of calcium anacardate on the performance, diarrhea incidence, blood parameters, intestinal morphometry, and pH of gastrointestinal contents in piglets from 21 to 42 days of age. Sixty weaned Topigs piglets, with initial weight of 6.049±0.311 kg, were distributed in the following treatments: diet with or without antibiotic growth promoter (zinc bacitracin) and diets supplemented with increasing levels of calcium anacardate (0.4, 0.8, and 1.2%), with six replicates and two animals per experimental unit. No differences in performance (21 to 42 days of age), blood parameters, and villus height:crypt depth ratio were found between piglets fed diets containing calcium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anacardic acid; Intestinal morphometry; Organic acids; Phenolic compounds; Post-weaning; Zinc bacitracin.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001201253

Nitrogen fertilization in consecutive cycles and its impact on high-density peach crops
Provedor de dados: 86
Autores: Ferreira,Letícia Vanni; Picolotto,Luciano; Pereira,Ivan dos Santos; Schmitz,Juliano Dutra; Antunes,Luis Eduardo Corrêa.
Abstract: The objective of this work was to evaluate the effect of nitrogen fertilization on the mineral composition of leaves, initial growth, and yield of peach (Prunus persica) tree advanced selections grown at a high-planting density. The experiment was carried out between 2012 and 2015 in a randomized complete block design, with a combination of advanced selections of the 'Cascata 1513' and 'Cascata 1067' peach trees and of N fertilization doses (0, 30, 60, and 120 kg ha-1 N). Green weight after pruning, diameter, and increase of trunk diameter, canopy volume, plant height, branch length, number of buds per centimeter of shoot, chlorophyll index, leaf area, rust incidence, average production, number of fruit, and mass of fruit were evaluated. Genotype...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prunus persica; Growth; Nitrogen; Nutrition; Planting density.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000200172

Defoliation of strawberry mother plants for the production of runner tips
Provedor de dados: 86
Autores: Picio,Miriane Dal; Andriolo,Jerônimo Luiz; Cardoso,Francieli Lima; Lerner,Maíne Alessandra; Souza,Jéssica Maronez de.
The objective of this work was to determine the sink-source relationships and their effects on the number and growth of runner tips of 'Camino Real' strawberry stock plants. Three types of sources were evaluated: one defoliation at 96 days after planting (DAP), two defoliations at 50 and 96 DAP, and mother plants without defoliation. Four types of sink were accessed: runner tips collected weekly and monthly, four stolons with rooted runner tips in pots, and four freely-grown stolons. A completely randomized experimental design was used in a split-plot arrangement, with four replicates. The source types were placed in the plots, and sink types in the subplots. The number of runner tips, the crown diameter, and the dry matter mass were determined. Number and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fragaria xananassa; Plug plants; Propagation; Sink strength; Source-sink relationship.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000700515

Performance of common snook subjected to different feeding frequencies and rates using automatic feeders
Provedor de dados: 86
Autores: Herrera,Leandro Amaral; Santos,Ana Paula dos; Sousa,Otávio Mesquita de; Kuhnen,Vanessa Villanova; Sanches,Eduardo Gomes.
Abstract: The objective of this work was to evaluate the growth performance of common snook (Centropomus undecimalis) subjected to different feeding rates and frequencies using automatic feeders. Two experiments of 60 days each were carried out. In the first one, 20 fishes per tank were distributed in three feeding rates of: 5, 10, and 15% body weight per day. In the second experiment, 20 fishes per tank were distributed in nine tanks, in three feeding frequency: once a day, three times a day, and six times a day. Water parameters were maintained at the recommended level for the species. Final weight, body weight gain, specific growth rate, and feed conversion rate did not differ significantly between the 10 and 15% feeding rates. However, both rates...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Centropomus undecimalis; Automatic feeders; Feeding management; Mariculture; Precision aquaculture; Recirculation system.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000101101

In vitro conservation of apical meristem-tip of Melia azedarach L. (Meliaceae) under slow-growth conditions: (with 1 table &amp;#38; 2 figures)
Provedor de dados: 85
Autores: Scocchi,AM; Mroginski,LA.
Studies on in vitro storage of Melia azedarach -"paradise tree"- under slow-growth conditions were carried out to develop an efficient protocol for the conservation of the genetic diversity of the crop. The response to different growth retardation treatments was examined using clone E. In vitro cultures of apical meristem-tips (0.2-0.3 mm in length) could be effectively maintained for 12 months at 4ºC on ¼ MS basal medium supplemented with 0.5 µM BA. Shoot proliferation was observed on 67 % of the recovered apical meristem-tips, after 12 months at 4ºC. Rooting of the regenerated shoots was achieved by reculturing them on MS + 17.5 µM IBA, during 4 days and subsequently transferred to MS medium lacking growth-regulators for 30 days. Complete plants were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conservation; Germplasm; In vitro culture; Melia azedarach; Meristem.
Ano: 2004
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572004000100017

Apparent cross-talk of two signaling pathways that regulate Zea mays coleoptile growth
Provedor de dados: 85
Autores: Buentello Volante,B; Díaz de León-Sánchez,F; Rivera-Cabrera,F; Aguilar Caballero,R; Ponce-Valadez,M; Sánchez de Jiménez,E; Pérez-Flores,LJ.
Auxin and insulin promote Zea mays embryo growth, induce S6 ribosomal protein (S6rp) phosphorylation, and promote specific protein synthesis. The objective of this research was to test a possible cross-talk between insulin and auxin transduction pathways in Z. mays coleoptiles, typical auxin target tissues. Auxin and insulin produced differential quantitative and qualitative stimulation of cytoplasmic and ribosomal protein phosphorylation, and specific patterns of de novo synthesized cytoplasmic proteins. In addition, insulin induced S6rp phosphorylation was strongly inhibited by rapamycin, indicating target of rapamycin (TOR) kinase participation; auxin-induced S6rp phosphorylation was insensitive to this inhibitor. Phosphatidic acid (PA), a second...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Auxins; Insulin; Phosphatidic acid; ZmS6K; TOR; Plant growth.
Ano: 2010
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572010000100015

Linking relative growth rates to biomass allocation: the responses of the grass Leymus chinensis to nitrogen addition
Provedor de dados: 85
Autores: Li,YY; Lü,X-T; Wang,Z-W; Zhou,C; Han,X-G.
Relative growth rate (RGR) of plants is a key component of fitness. Theoretically, the RGR of plants would be closely related with biomass allocation. Our mechanistic understanding of the relationship between RGR and biomass allocation under global change scenarios is still limited. We examined the responses of RGR and biomass allocation of Leymus chinensis, a dominant grass in the temperate steppe of northern China, to a wide range of N addition. We found that N addition increased RGR of L. chinensis up to a threshold of 10 g N/m². While leaf and stem weight ratios were positively correlated with N addition rates, root weight ratio showed a negative correlation. The RGR of total biomass was positively correlated with both leaf and stem weight ratios, but...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant functional traits; Nitrogen deposition; Growth dynamics; Temperate steppe; Allometry.
Ano: 2014
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572014000200008

Sustainable management and use of a medicinal emblematic plant in Chile: Buddleja globosa Hope
Provedor de dados: 85
Autores: Wilckens,P; Fernández,MP; Gómez,M; Peña,I; Montenegro,G.
Buddleja globosa Hope is a well-known native, medicinal plant because of its digestive and cicatrizing properties. Due to the increasing domestic and international demand, B. globosa abundance and distribution in Chile has resulted in the intensive exploitation of the plant's natural habitat, without consideration of the plant's regenerative capacity. The main objective of this research was to establish the B. globosa growth cycle and model its regeneration cycle. This would allow for more productive, efficient and sustainable use and management of this species, thus ensuring its long-term conservation. We selected two study sites, one wild and another one cultivated. In each one, ten individuals were marked as control treatments, for further observations,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomass; Growth cycle; Medicinal resource; Regeneration rate; Sustainable use.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572013000100012

Bioherbicidal Assessment of Aqueous Extracts of Mesquite (Prosopis juliflora) on Weeds Control and Growth, Yield and Quality of Wheat
Provedor de dados: 87
Autores: SHAH,R.H.; BALOCH,M.S.; KHAN,A.A.; IJAZ,M.; ZUBAIR,M.
ABSTRACT: Two-year field experiments were conducted to investigate the phytotoxicity of mesquite (Prosopis juliflora) on weed control and yield of wheat in 2013-14 and 2014-15. Mesquite aqueous extracts were prepared with 10, 20, 30 and 40% concentration of leaves, stems, and roots and were compared with tap water (control). These experiments were laid out in a completely randomized block design with four replications. All parameters (weed density, fresh weed biomass, dry weed biomass, chlorophyll content, leaf area index, leaf area duration, crop growth rate, net assimilation rate, plant height and number of tillers) were significantly reduced by applying the mesquite extracts. Among different concentrations, the maximum level (40%) of all three plant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelopathy; Extract; Weeds; Wheat yield.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100214

Grass Weeds Interfering with Eucalypt: Effects of the Distance of Coexistence on the Initial Plant Growth
Provedor de dados: 87
Autores: Graat,Y.; Rosa,J.O.; Nepomuceno,M.P.; Carvalho,L.B.; Alves,P.L.C.A.
Two experiments were carried out to evaluate the initial plant growth of Eucalyptus urograndis growing in coexistence with Urochloa decumbens and U. ruziziensis. In 100-L box, one plant of U. decumbens or U. ruziziensis grew in coexistence with one plant of E. urograndis clones C219H or H15, respectively, in the distances of 0, 5, 10, 15, 20, 25, 30, 35, and 40 cm from the crop. After 30, 60, 90 (both clones), and 150 days (just for H15), growth characteristics were evaluated. Plants of both clones, growing in weed-free situations, showed a better growth and development than plants that grew in weedy situations, independently of the distance, having the highest plant height, stem diameter, dry mass of stem, and dry mass of leaves. As the same way, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eucalyptus urograndis; Urochloa decumbens; Urochloa ruziziensis; Weed competition.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000200203

AUTOTOXICITY IN TOUGH LOVEGRASS ( Eragrostis plana )
Provedor de dados: 87
Autores: FAVARETTO,A.; SCHEFFER-BASSO,S.M.; PEREZ,N.B.
ABSTRACT Autotoxicity in tough lovegrass has been analyzed in the field, but has never been tested in allelopathy bioassays. Therefore, this study aimed to verify and compare the autotoxicity of leaves and roots from aqueous extracts of tough lovegrass on its germination and early seedling growth. Extracts of green leaves (GL), senescent leaves (SL), and roots (R) at concentrations of 0.05, 0.15, and 0.25 g mL-1 were analyzed on how they affected seed germination and seedling growth. The extracts, regardless of the source or concentration of the material used, have significantly reduced germination percentage, index of germination speed, and root growth of seedlings of tough lovegrass. Effects on mean germination time and shoot length varied according to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelopathy; Aqueous extracts; Eragrostis plana; Germination.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100241

Growth Analysis of Chloris elata
Provedor de dados: 87
Autores: CORREIA,N.M.; RESENDE,I.
ABSTRACT: In Brazil, in agricultural areas where there is no establishment of cover crops in the off season, as well as in citrus orchards in the state of São Paulo, an increase in the infestation of Chloris elata has been observed. This is a perennial species, propagated by seeds and short rhizomes, erect and slightly caespitose. With the objective of evaluating the growth and development of plants from two accessions of C. elata, a greenhouse experiment was conducted. The experimental design was completely randomized, in a 2 (accessions of C. elata) x 15 (evaluation periods) factorial arrangement, with four replications. Fifteen destructive evaluations were performed 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98, 112 and 126 days after sowing (DAS)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biotype; Tall windmill grass; Plant development.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100328

Growth and Development of Digitaria insularis Biotypes Susceptible and Resistant to Glyphosate
Provedor de dados: 87
Autores: PEREIRA,,G.R.; COSTA,,N.V.; MORATELLI,G.; RODRIGUES-COSTA,A.C.P.
ABSTRACT The study aimed to evaluate the growth and development of biotypes of Digitaria insularis susceptible and resistant to glyphosate. Samples of biotypes were collected in Western Paraná in Cascavel, one susceptible (24o57'29.06" S and 53o30'23.73" W) and one resistant (24o54'54.99" S and 53o30'08.55" W; with Resistance Factor of 2.96). The experiment was arranged in a completely randomized design with four replications. The treatments consisted of different plant collection timings, carried out at regular intervals of 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98, 105 and 112 days after emergence. The growth curve of susceptible and resistant biotypes were similar; however, the susceptible biotypes accumulated more leaf dry mass, while the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth analysis; Chemical control; Sourgrass; Weeds.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100224

Erratum: Allelopathic Effect of Santa Maria (Parthenium hysterophrous) Mulch on Growth and Yield of Soybean (Glycine max)
Provedor de dados: 87
Tipo: Info:eu-repo/semantics/other
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100901

Allelopathic Effects of Invasive Prosopis juliflora on Grass Species of Potohar Plateau, Pakistan
Provedor de dados: 87
Autores: QAYYUM,A.; RAFIQ,M.K.; ZAHARA,K.; BIBI,Y.; SHER,A.; RAFIQ,M.T.; AZIZ,R.; MANAF,A.
ABSTRACT The present study was conducted to investigate the allelopathic effects of Prosopis juliflora (Sw.) DC. (Mesquite) on various growth parameters of three promising grass species (Cenchrus ciliaris, Panicum antidotale and Panicum maximum) on the Potohar Plateau, Pakistan, under nursery conditions. The experiment was carried out under a completely randomized design with two factors and three replicates. Different concentrations of the foliage aqueous extract of P. juliflora were prepared and their effect was studied on root length, shoot length, fresh and dry biomass of tested grass species. All grass species showed a concentration dependent inhibition. However, among all grasses, C. ciliaris was affected most severely whereas P. antidotale was the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelopathy; Cenchrus ciliaris; Panicum antidotale; Panicum maximum; Growth.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100322

Residues of Invasive Forage Species Inhibits the Growth of Caryocar brasiliense
Provedor de dados: 87
Autores: LIMA,S.F.; ARAÚJO,A.C.F.; TAVARES,C.J.; FREITAS,M.A.M.; JAKELAITIS,A.; PEREIRA,L.S.
ABSTRACT: Native species seedling growth may be affected by allelopathic substances released by invasive forage species, mainly in natural regrowth areas. Thus, this research aimed to evaluate the growth characteristics of pequi trees influenced by concentrations of plant residues of different forage species (Urochloa decumbens, Melinis minutiflora and Paspalum notatum). A randomized block experimental design was arranged in a factorial 3 x 4 + 1, with four replications. Treatments consisted of incorporating plant shoot residues of three forage species to pequi seedling substrate (soil + fertilizer) at four concentrations (1%, 2%, 3%, and 4% mass/mass), plus pequi seedlings grown in a residue-free substrate (control). Pequi plant height, stem diameter, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caryocar brasiliense; Urochloa decumbens; Melinis minutiflora; Paspalum notatum; Allelopathy.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100168

Trinexapac-Ethyl and Sulfometuron-Methyl Selectivity to Young Eucalyptus Plants
Provedor de dados: 87
Autores: Correia,N.M.; Villela,G.B.
Trinexapac-ethyl and sulfometuron-methyl are the most widely used ripeners in sugarcane. The application is performed by airborne spraying. Thus, if weather conditions are unfavorable, spray drift to neighboring areas may occur. The objective of this study was to assess the selectivity of the plant growth regulators trinexapac-ethyl and sulfometuron-methyl, used as sugarcane ripeners, to eucalyptus (Eucalyptus urograndis) young plants. The experiment was installed in an eucalyptus commercial yield area, in the municipality of Tambaú, state of São Paulo, Brazil, and arranged in a 2 x 8 factorial design in randomized blocks with four replications. The treatments studied were trinexapac-ethyl and sulfometuron-methyl, sprayed in eight doses, 0; 1.0; 2.5; 5.0;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eucalyptus urograndis; Phytotoxicity; Ripener.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000200259

Growth and yield of corn grain and green ear in competition with weeds
Provedor de dados: 87
Autores: Silva,P.S.L; Damasceno,A.P.A.B; Silva,K.M.B; Oliveira,O.F; Queiroga,R.C.F.
Studies on plant growth are interesting because they provide explanations for the factors that influence yield in various crops. The objective of this work was to evaluate growth and yield in corn cultivar AG1051, when in competition with weeds. Cultivar AG 1051 was submitted to two groups of treatments: weed control, and sampling periods for dry biomass evaluation. The weed control treatments consisted of hoeing (two hoeings performed at 20 and 40 days after sowing) and no hoeing. Sampling periods consisted of collecting the above-ground part and roots of corn every fifteen days, until 105 days after sowing (DAS); the first sampling was performed 30 DAS. A completely randomized block design with ten replicates was used. For the characteristics evaluated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Green corn; Dry matter.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582009000500008

GROWTH AND YIELD RESPONSE OF MAIZE (Zea mays) TO INTER AND INTRA-ROW WEED COMPETITION UNDER DIFFERENT FERTILIZER APPLICATION METHODS
Provedor de dados: 87
Autores: MAQBOOL,M.M.; TANVEER,A.; ALI,A.; ABBAS,M.N.; IMRAN,M.; AHMAD,M.; ABID,A.A.
A field experiment was conducted for two consecutive years to study the effect of fertilizer application methods and inter and intra-row weed-crop competition durations on density and biomass of different weeds and growth, grain yield and yield components of maize. The experimental treatments comprised of two fertilizer application methods (side placement and below seed placement) and inter and intra-row weed-crop competition durations each for 15, 30, 45, and 60 days after emergence, as well as through the crop growing period. Fertilizer application method didn't affect weed density, biomass, and grain yield of maize. Below seed fertilizer placement generally resulted in less mean weed dry weight and more crop leaf area index, growth rate, grain weight...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Competition; Fertilizer; Grain yield; Maize; Plant growth.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000100047

Elimination of the Effect of Some Herbicides on the Growth of Zea mays and Accumulation in the Soil Using Urea
Provedor de dados: 87
Autores: ELHAKEM,A.H.; ABD EL-SALAM,M.M.
ABSTRACT: This study evaluates the effect of urea on growth of herbicide-treated maize and its accumulation in the soil. When the seedlings were 15 days old, the plots were divided into five groups. One group served as control, two received treatments with metolachlor and isoproturon at the dose of 1.5 kg ha-1 and 2.5 L ha-1, respectively. The two remaining groups received the same dose of herbicide along with urea added at a rate of 129 kg ha-1. The application of the two herbicides appeared to cause a significant decrease in shoot dry weight, photosynthetic pigments, d-aminolevulinate dehydratase enzyme [ALA-D, EC 4.2.1.24] and total soluble carbohydrates of the maize plants. The application of urea appeared to alleviate the effects of both herbicides on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Maize; Soil accumulation; Nitrogen fertilizer.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100308

Erratum: Phenolics in Two Alternanthera Species Residues Affect the Germination and Early Seedling Growth of Rice (Oryza sativa)
Provedor de dados: 87
Tipo: Info:eu-repo/semantics/other
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100903

Effects of 2,4-D Herbicide on Species of the Digitaria Genus
Provedor de dados: 87
Autores: GAZOLA,T.; DIAS,M.F.; DIAS,R.C.; CARBONARI,C.A.; VELINI,E.D.
ABSTRACT: The objective of this work was to evaluate the effects of the 2,4-D herbicide on the growth and development of Digitaria insularis and Digitaria horizontalis plants under different climatic conditions. Two greenhouse experiments were conducted in a completely randomized design, with 11 treatments (rates of the herbicide) and four replications. Rate-response curves were determined for the 2,4-D rates of 0, 50.37, 100.75, 201.5, 403, 806, 1,612, 3,224, 6,448, 12,896, and 25,792 g a.i. ha-1. The plants presented growth stimulus with low rates of 2,4-D in the autumn-winter period, but this stimulus was not found in the spring-summer period. The plants subjected to application of high rates of 2,4-D had significantly lower growth and development than...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Synthetic auxin; Digitaria insularis; Digitaria horizontalis; Hormesis.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100173

Growth, biomass allocation and photosynthesis of Rolandra fruticosa (asteraceae) in response to shade
Provedor de dados: 87
Autores: Dias-Filho,Moacyr B.; Chagas Júnior,Aloisio F.
The effects of shade on growth, biomass allocation patterns and photosynthetic response was examined for Rolandra fruticosa (L.) Kuntze, a common perennial weed shrub in cultivated pastures and agricultural areas of Brazilian Amazonia, for plants grown in full sunlight and those shaded to 30 % of full sunlight over a 34-d period. Specific leaf area and leaf area ratio were higher for shade plants during all the experimental period. Shade plants allocated significantly less biomass to root tissue than sun plants and relative growth rate was higher in sun plants. Sun leaves had significantly higher dark respiration and light saturated rates of photosynthesis than shade leaves. The apparent quantum efficiency was higher for shade leaves, while light...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Specific leaf area; Leaf area ratio; Growth analysis; Tropics.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582000000100007

ALLELOPATHIC EFFECTS OF ROSE WOOD, GUAVA, EUCALYPTUS, SACRED FIG AND JAMAN LEAF LITTER ON GROWTH AND YIELD OF WHEAT ( Triticum aestivum L.) IN A WHEAT-BASED AGROFORESTRY SYSTEM
Provedor de dados: 87
Autores: IQBAL,J.; RAUF,H.A.; SHAH,A.N.; SHAHZAD,B.; Bukhari,M.A.
ABSTRACT Selection of tree species under agroforestry systems is crucial to sustain the productivity of a crop. In present study, allelopathic effects of the leaf litters of 5 trees named Rose wood (Dalbergia sissoo), Guava (Pisidium guajava), Eucalyptus (Eucalyptus camaldulensis), Sacred fig (Ficus religiosa) and Jaman (Syzygium cumini) species on wheat growth and yield was examined. Leaf litter of each tress species was mixed in soil with two doses @ 100 and 200 g of leaves of each species per pot. Higher shoot length, shoot dry weight, number of spikelets per spike and biological yield were recorded in 200 g sun dried Jaman (Syzygium cumini) leaves. Total number of tillers per plant and number of ears per plant were higher under the application of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelopathy; Agroforestry; Wheat growth; Crop production.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100258

Physiological response of vicia faba to prohexadione-calcium under saline conditions
Provedor de dados: 87
Autores: Bekheta,M.A.; Abdelhamid,M.T.; El-Morsi,A.A.
Changes in the activities of oxidative enzymes (indole acetic acid oxidase, peroxidase and catalase), endogenous hormones (gibberellic acid (GA3), indole acetic acid (IAA), abscisic acid (ABA) and cytokinins (AsZeatin), photosynthetic pigments (chlorophyll a, chlorophyll b and carotenoids), total carbohydrates, total soluble sugars, amino acid proline and vegetative growth parameters were used as indicators to explain the physiological role of the growth retardant prohexadione-calcium on Vicia faba seedlings 40 days after sowing under salinity stress for 30 days. The obtained results show that soaking faba bean seeds prior to sowing at different concentrations of prohexadione-calcium (0, 10, 20 and 30 ppm) significantly increased the activities of indole...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Endogenous hormones; Faba bean; Growth retardant; Oxidative enzymes; Salinity.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582009000400015

Allelopathic Effect of Santa Maria (Parthenium hysterophrous) Mulch on Growth and Yield of Soybean (Glycine max)
Provedor de dados: 87
Autores: HUSSAIN,S.; SHEHZAD,M.; SIDDIQUI,M.H.; AWAN,S.I.
ABSTRACT To determine the effect of Santa Maria (Parthenium hysterophrous) mulch on growth and yield of soybean, a study was conducted at the Department of Agronomy, Faculty of Agriculture, The University of Poonch, Rawalakot, Azad Jammu and Kashmir. The experiment was conducted in the laboratory as well as in the greenhouse. Parthenium surface mulch and soil incorporation was practiced at different levels in laboratory as well as in greenhouse. Higher allelopathic potential was found by the treatments of Parthenium soil incorporation, especially when soil incorporation of Parthenium herbage @ 5 ton ha-1 was practiced. This could be because of the presence of soil moisture that enhanced the decomposition of Parthenium therefore, retarded the growth and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Parthenium hysterophrous; Surface mulching; Soil incorporation; Glycine max.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000400631

Phytochemistry and Allelophatic Potential of Torelliodora Eucalyptus Leaves on Germination and Initial Growth of Mutambo
Provedor de dados: 87
Autores: PEREIRA,S.R.; FONSECA,D.R.; MATIAS,R.; CORRÊA,B.O.; PEDRINHO,D.R.
ABSTRACT: Considering the possibility of a intercropping between exotic and native wood species for Legal Reserve areas restoration, information is needed about the possible interactions (positive or negative) between the involved species. The aim of this study was to determine the allelochemicals classes of aqueous extracts from dried and fresh leaves of torelliodora eucalyptus, as well as to evaluate the allelopathic potential of these extracts in the germination and initial growth of Guazuma ulmifola, a native species from Cerrado. To obtain the aqueous extracts at the concentrations of 25 mg mL-1, 50 mg mL-1, 100 mg mL-1 and 200 mg mL-1, the fresh and dried leaves of the eucalyptus were separately subjected to turbolize, followed by an ultrasound bath...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelochemicals; Legal Reserve restoration; Guazuma ulmifolia; Exotic species.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100349

Anatomy and physiology of Cattail as related to different population densities
Provedor de dados: 87
Autores: CORRÊA,F.F.; MADAIL,R.H.; BARBOSA,S.; PEREIRA,M.P.; CASTRO,E.M.; SORIANO,C.T.G.; PEREIRA,F.J.
The objective of this work was to evaluate the effects of the population density of Typha angustifolia plants in the anatomical and physiological characteristics. Plants were collected from populations of high density (over 50% of colonization capacity) and low density (less than 50% of colonization capacity) and cultivated under controlled greenhouse conditions. Plants from both populations were grown in plastic trays containing 4 L of nutritive solution for 60 days. At the end of this period, the relative growth rate, leaf area ratio, net assimilatory rate, root/shoot ratio, leaf anatomy, root anatomy, and catalase and ascorbate peroxidase activities were evaluated. Plants from high density populations showed increased growth rate and root/shoot ratio....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Macrophytes; Typha angustifolia; Morphological plasticity; Plant growth; Ecological plant anatomy.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000100001

Hormesis Effect of Dichlorophenoxy Acetic Acid Sub-Doses and Mepiquat Chloride on Cotton Plant
Provedor de dados: 87
Autores: AMÉRICO,G.H.P.; AMÉRICO-PINHEIRO,J.H.P.; FURLANI JR,E.
ABSTRACT: The aim of this study was to evaluate the hormesis effect of sub-doses of dichlorophenoxy acetic acid herbicide and the plant growth regulator mepiquat chloride on the vegetative and productive characteristics of two cotton cultivars (FMT 701 and Fibermax 966). The experiment was conducted from November 2013 to May 2014. The experimental design was a randomized block in a factorial scheme 6 x 2 x 2, with four replications, totaling 96 installments with 24 treatments: the witness and five sub-doses of the herbicide 2,4-D: 0.68, 1.36, 2.04, 2.72 and 3.40 g equivalent acid (e.a) per ha, with and without application of mepiquat chloride at a dose of 200 mL ha-1 in the cotton cultivars FMT 701 and Fibermax 966. The sub-doses applied were 2,4-D at 45...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gossypium hirsutum; Herbicide; Growth regulator.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100277

ECONOMIC GROWTH AND DEVELOPMENT
Provedor de dados: 31
Autores: Pandya-Lorch,   Rajul.
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 1994
URL: http://purl.umn.edu/16335

Rapid Growth in Adoption of Genetically Engineered Crops Continues in U.S.
Provedor de dados: 31
Autores: Fernandez-Cornejo,   Jorge.
Tipo: Article
Palavras-chave: Consumer/Household Economics; Crop Production/Industries.
Ano: 2008
URL: http://purl.umn.edu/124034

Modeling Migration Effects on Agricultural Lands: A Growth Equilibrium Model
Provedor de dados: 31
Autores: Hailu,   Yohannes G.; Rosenberger,   Randall S.
We estimate a system-of-equations model designed to measure the interaction between intertemporal patterns of changes in population, employment, and agricultural land densities. The model is applied to West Virginia for the 1990-1999 period. Consistent with recent findings on migration patterns, the results show that jobs followed people. New jobs were captured by commuters, while agricultural land losses were occurring in the commuters' counties of origin or bedroom communities. However, counties with relatively more profitable and concentrated agricultural enterprises were less susceptible to alternative land use pressure than counties with less productive or fragmented agricultural land. Elasticities indicate population change is elastic, whereas...
Tipo: Journal Article
Palavras-chave: Land Economics/Use.
Ano: 2004
URL: http://purl.umn.edu/31379

Targeting Industry Clusters for Regional Economic Development: An Overview of the REDRL Approach
Provedor de dados: 31
Autores: Barkley,   David L.; Henry,   Mark S.
An industry cluster is a geographically bounded collection of similar and/or related firms that together create competitive advantages for member firms and the local economy. The targeting of economic development programs at industry clusters provides three principal advantages: multiplier effects are stronger, employment growth potential is enhanced, and new firm spin-offs are promoted. The Clemson University Regional Economic Development Research Laboratory (REDRL) targeting method uses a screening process to identify local industry clusters with high potential for future growth. The region’s industries must pass five screens to be selected as a targeted cluster: substantial local presence as indicated by number of establishments and employees, industry...
Tipo: Report
Palavras-chave: Community/Rural/Urban Development.
Ano: 2005
URL: http://purl.umn.edu/113803

MULTIFUNCTIONAL AGRICULTURE AND REGIONAL ECONOMIC GROWTH
Provedor de dados: 31
Autores: Randall,   Alan.
Paper from Plenary session
Tipo: Conference Paper or Presentation
Palavras-chave: Agribusiness; Agricultural and Food Policy; Community/Rural/Urban Development.
Ano: 2009
URL: http://purl.umn.edu/57334

Economic Feasibility of Bovine Growth Hormone
Provedor de dados: 31
Autores: Hatch,   L. Upton; Kinnucan,   Henry W.; Molnar,   Joseph J.
Tipo: Journal Article
Palavras-chave: Livestock Production/Industries; Production Economics.
Ano: 1987
URL: http://purl.umn.edu/59886

Long-Term Agricultural GHG Emissions and Economic Growth: The Agricultural Environmental Kuznets Curve across Italian Regions
Provedor de dados: 31
Autores: Coderoni,   Silvia; Esposti,   Roberto.
Tipo: Conference Paper or Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2011
URL: http://purl.umn.edu/114426

China’s Consumption Driven Growth Path
Provedor de dados: 31
Autores: Lardy,   Nicholas R.
Tipo: Book
Palavras-chave: International Development.
Ano: 2007
URL: http://purl.umn.edu/55019

Austrian Border Regions and Eastern Integration A Low Competitiveness - High Growth Paradoxon
Provedor de dados: 31
Autores: Mayerhofer,   Peter.
Many regions on the EU Eastern borders have developed favourably after the opening up of the border and the implementation of association agreements with the CEECs. This was often seen as a positive sign for the further perspectives of these regions after EU enlargement. In this paper we take a closer look at the mechanisms involved in a case study for Austria. Based on a very disaggregated data set at a regional as well as sectoral level we find that neither sectoral preconditions nor locational advantages can explain the good performance of (rural) border regions after 1989. Using multivariate cluster analyses we group 3-digit-industries to theoretically founded typologies indicating different sector characteristics and find that (fast growing) rural...
Tipo: Working or Discussion Paper
Palavras-chave: Border Regions; Integration; EU Enlargement; Regional Competitiveness; Austria; International Relations/Trade; F02; F15; R11; R12.
Ano: 2002
URL: http://purl.umn.edu/26234

Tourism Development as a Dimension of Globalisation: Experiences and Policies of China and Australia
Provedor de dados: 31
Autores: Tisdell,   Clement A.
Both China and Australia have participated in the process of growing economic globalisation in recent decades.  This paper compares trends in the openness of China’s and Australia’s economy in terms of international trade and foreign direct investment, and then examines global trends in international tourism.  This dimension of growing globalisation indicates an accelerating trend in the second half of the 20th century.  The article shows how China was able to take advantage of this trend as a consequence of its economic reforms and opening up to the outside world.  A mini-case study of the expansion of China’s tourism industry and its evolving policy framework is provided.  Australia also has obtained significant growth in its tourism industry in recent...
Tipo: Working or Discussion Paper
Palavras-chave: Globalisation; China; Australia; International trade; Foreign direct investment; International tourism; International Relations/Trade.
Ano: 2004
URL: http://purl.umn.edu/90535

INFLATION, CASH FLOWS, AND GROWTH: SOME IMPLICATIONS FOR THE FARM FIRM
Provedor de dados: 31
Autores: Robison,   Lindon J.; Brake,   John R.
Tipo: Journal Article
Palavras-chave: Agribusiness.
Ano: 1980
URL: http://purl.umn.edu/29474

Spatial Networks, Labor Supply and Income Dynamics: Evidence from Indonesian Villages
Provedor de dados: 31
Autores: Yamauchi,   Futoshi; Muto,   Megumi; Chowdhury,   Shyamal K.; Dewina,   Reno; Sumaryanto,   Sony.
This paper examines the impact of spatial connectivity development on household income growth and non-agriculture labor supply, combining household panel data and village census in Indonesia. Empirical results show that the impacts of the improvement of local road quality in the area (positively correlated with transportation speed) on income growth and the transition to non-agricultural labor markets depends on the distance to economic centers and household education. In particular, post-primary education significantly increases the benefit from the local spatial connectivity improvement in remote areas and labor transition to non-agricultural sectors. Education and local road quality are complementary, mutually increasing income growth and...
Tipo: Conference Paper or Presentation
Palavras-chave: Income growth; Spatial Connectivity; Rural economy; Education; Indonesia; Community/Rural/Urban Development; Labor and Human Capital; O12; R40.
Ano: 2009
URL: http://purl.umn.edu/51571

Policy and Strategy for the Growth of Agriculture Industry in Korea (Power Point)
Provedor de dados: 31
Autores: Joo-ryang,   Lee.
Tipo: Conference Paper or Presentation
Palavras-chave: Agricultural and Food Policy; Land Economics/Use; Production Economics; Productivity Analysis.
Ano: 2011
URL: http://purl.umn.edu/115417

Demographic Determinants of Savings: Estimating and Interpreting the Aggregate Association in Asia
Provedor de dados: 31
Autores: Schultz,   T. Paul.
Life cycle savings is proposed as one explanation for much of the increase in savings and economic growth in Asia. The association between the age composition of a nation’s population and its savings rate, observed within 16 Asian countries from 1952 to 1992, is reestimated here to be less than a quarter the size reported in a seminal study, which assumed lagged savings is exogenous. Specification tests as well as common sense imply, moreover, that lagged savings is likely to be endogenous, and when estimated accordingly there remains no significant dependence of savings on the age composition, measured in several ways. Research should consider lifetime savings as a substitute for children, and model the causes for the decline in fertility which changes...
Tipo: Working or Discussion Paper
Palavras-chave: Life cycle savings; Aging; Asian growth; Demographic transition; Financial Economics; D91; J11; O11; O53.
Ano: 2004
URL: http://purl.umn.edu/28409

INTERSTATE TAX DIFFERENTIALS RELATED TO ECONOMIC GROWTH
Provedor de dados: 31
Autores: Helmberger,   John D.
Tipo: Working or Discussion Paper
Palavras-chave: Public Economics.
Ano: 1985
URL: http://purl.umn.edu/13637

GROWTH, TRENDS AND SOME IMPLICATIONS OF LEISURE IN AMERICA
Provedor de dados: 31
Autores: Blank,   Uel.
Tipo: Working or Discussion Paper
Palavras-chave: Labor and Human Capital; Resource /Energy Economics and Policy.
Ano: 1970
URL: http://purl.umn.edu/13283

Land Use Change: A Spatial Multinomial Choice Analysis
Provedor de dados: 31
Autores: Carrion-Flores,   Carmen E.; Flores-Lagunes,   Alfonso; Guci,   Ledia.
Urban decentralization and dispersion trends have led to increased conversion of rural lands in many urban peripheries and exurban regions of the U.S. The growth of the exurban areas has outpaced growth in urban and suburban areas, resulting in growth pressures at the urban-rural fringe. A thorough analysis of land use change patterns and the ability to predict these changes are necessary for the effective design of regional environmental, growth, and development policies. We estimate a multinomial discrete choice model with spatial dependence using parcel-level data from Medina County, Ohio. Accounting for spatial dependence should result in improved statistical inference about land use changes. Our spatial model extends the binary choice “linearized...
Tipo: Conference Paper or Presentation
Palavras-chave: Land Use Change; Multinomial Logit; Spatial Dependence; Community/Rural/Urban Development; Land Economics/Use; Research Methods/ Statistical Methods; R14; C21; C25.
Ano: 2009
URL: http://purl.umn.edu/49403

Agricultural Productivity Growth in the Caucasian Countries
Provedor de dados: 31
Autores: Khachaturyan,   Marianna.
Tipo: Conference Paper or Presentation
Palavras-chave: International Development; Production Economics.
Ano: 2010
URL: http://purl.umn.edu/61874

The Relationship Between Poverty, Inequality, and Growth in the Rural Ethiopia: Micro Evidence
Provedor de dados: 31
Autores: Gelaw,   Fekadu.
This paper attempted to analyses the dynamic relationship between the three development objectives: inequality, growth and poverty. Given the vast majority of the population (about 85 percent) is living in the rural area and poverty being higher in rural than in urban Ethiopia, the Government’s focus on rural development can be acceptable if the country is to achieve its poverty reduction targets in near future. Contrary to this, the result of study shows that there has been no promising reduction in poverty in the past. The study used five rounds data collected from 18 rural villages through Ethiopian Rural Household Survey. FTG poverty measures, Gini index and General Entropy classes of inequality measures were calculated. Fixed Effect estimation was...
Tipo: Conference Paper or Presentation
Palavras-chave: Food Security and Poverty; International Development.
Ano: 2009
URL: http://purl.umn.edu/51915

SUSTAINABLE GROWTH IN AGRICULTURAL PRODUCTION: POETRY, POLICY AND SCIENCE
Provedor de dados: 31
Autores: Ruttan,   Vernon W.
Tipo: Working or Discussion Paper
Palavras-chave: Environmental Economics and Policy; International Development.
Ano: 1991
URL: http://purl.umn.edu/13601

MEASURING ECONOMIC GROWTH IN RURAL COMMUNITIES: THE SHIFT-SHARE APPROACH
Provedor de dados: 31
Autores: Gordon,   John; Darling,   David L.
Tipo: Journal Article
Palavras-chave: Community/Rural/Urban Development.
Ano: 1976
URL: http://purl.umn.edu/29754

GROWTH AND FISCAL HEALTH IN WISCONSIN CITIES
Provedor de dados: 31
Autores: McCullough,   Stacey W.; Deller,   Steven C.
The intent of the applied research reported in this paper is to examine the relationship between growth and the fiscal health of a subset of local governments (incorporated cities) over the last decade. While any number of researchers has raised this question, the literature has tended to focus on larger urban areas during economic downturns. Ladd's (1994) most recent research looking at the fiscal effects of growth has become perhaps the most influential in this line of work. Ladd's research, however, is limited in that she focused on per capita spending, a variable of interest in itself and because it can be conceptually linked to service quality and tax burden. While the data used in her analysis do not reflect a period of economic downturn, the data...
Tipo: Working or Discussion Paper
Palavras-chave: Community/Rural/Urban Development.
Ano: 2002
URL: http://purl.umn.edu/12647

Forces behind China's Surging Trade: Competitiveness or Policy Driven?
Provedor de dados: 31
Autores: Somwaru,   Agapi; Tuan,   Francis C.; Gehlhar,   Mark J.; Diao,   Xinshen; Langley,   Suchada V.
This paper delves into China's differential growths in trade flows with high income countries by focusing on bilateral content of trade data over the time period 1962-2005.  Unlike other studies, we account for end use of traded goods ranging from primary, intermediate, and finished goods because China's policies impact all segments China's trade flows.  China's trade growth patterns with major high income countries clearly indicate that the adjacency-neighborhood partners alone is unlikely to explain its unprecedented growth in exports and imports.  China's outstanding performance in trade growth can be traced back to the 1970s with changes in its policies and increased involvement in the international segmentation of production processes and preferential...
Tipo: Conference Paper or Presentation
Palavras-chave: China; International trade; Growth; Policies; International Relations/Trade.
Ano: 2007
URL: http://purl.umn.edu/9907

Export Performance in Papua New Guinea, 1960 to 1999
Provedor de dados: 31
Autores: Fleming,   Euan M.; Blowes,   Anita.
Stochastic dominance analysis was used to assess export performance in Papua New Guinea from 1960 to 1999. A country with abundant natural resources, Papua New Guinea was able to experience significant growth in total export values throughout the final four decades of the 20th century, with each succeeding decade stochastically dominating the previous one. The expansion of mineral and energy exports from the early 1970s was the major source of this growth.  The powerful influence of an expanding minerals and energy sector must nevertheless be of concern in that this sector and other non-agricultural resource sectors comprise mainly extractive or quasi-extractive industries given the production practices that currently exist. Little progress has been made...
Tipo: Working or Discussion Paper
Palavras-chave: Export performance; Papua New Guinea; Stochastic dominance; International Relations/Trade.
Ano: 2003
URL: http://purl.umn.edu/12927

Scenic Landscapes Enhance Rural Growth
Provedor de dados: 31
Autores: McGranahan,   David A.
Tipo: Article
Palavras-chave: Community/Rural/Urban Development; Resource /Energy Economics and Policy.
Ano: 2009
URL: http://purl.umn.edu/124181

HOW FAST HAVE CHINA'S AGRICULTURAL PRODUCTION AND PRODUCTIVITY REALLY BEEN GROWING? NEW MEASUREMENT AND EVIDENCE
Provedor de dados: 31
Autores: Fan,   Shenggen.
Output in Chinese agriculture has grown rapidly for the last several decades, as reported by the Statistical System in China. However, reported total output is aggregated using constant prices, which has been proven to be inappropriate by many economists. As a result, growth rates of output reported by the government may be biased. This bias can be large, particularly at a time when relative prices of agricultural products were changed substantially as part of the policy reforms during the 1980s and 1990s. A similar problem exists in the aggregation of total input. Consequently, estimates of total factor productivity, an index of output minus input, can also be biased. This study uses a more appropriate approach to measure growth in output, input and total...
Tipo: Working or Discussion Paper
Palavras-chave: Productivity Analysis.
Ano: 1997
URL: http://purl.umn.edu/16118

POPULATION GROWTH--IS ENOUGH, ENOUGH?
Provedor de dados: 31
Autores: Hoyt,   John S., Jr.
Tipo: Working or Discussion Paper
Palavras-chave: Labor and Human Capital.
Ano: 1974
URL: http://purl.umn.edu/13693

POPULATION GROWTH AND POLICY OPTIONS IN THE DEVELOPING WORLD
Provedor de dados: 31
Autores: Bongaarts,   John; Bruce,   Judith.
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 1998
URL: http://purl.umn.edu/16208

Commodity Payments, Farm Business Survival, and Farm Size Growth
Provedor de dados: 31
Autores: Key,   Nigel D.; Roberts,   Michael J.
In the last 25 years, U.S. crop farms have steadily declined in number and grown in average size, as production has shifted to larger operations. Larger farms tend to receive more commodity program payments because most payments are tied to a farm’s current or historical production, but whether payments have contributed to farm growth is uncertain. This study uses farm-level data from the census of agriculture to determine whether there is a statistical relationship between farm commodity program payments and greater concentration in production. The analysis indicates that, at the regional level, higher commodity program payments per acre are associated with subsequent farm growth. Also, higher payments per acre are associated with higher rates of farm...
Tipo: Report
Palavras-chave: Agricultural payments; Farm size; Farm survival; Concentration; Consolidation; Government payments; Commodity programs.; Agribusiness; Agricultural and Food Policy; Community/Rural/Urban Development; Crop Production/Industries; Farm Management.
Ano: 2007
URL: http://purl.umn.edu/55968

RICE MARKETS, AGRICULTURAL GROWTH, AND POLICY OPTIONS IN VIETNAM
Provedor de dados: 31
Autores: Goletti,   Francesco; Minot,   Nicholas.
Viet Nam has undergone a profound transformation in recent years and, as a result of a series of macroeconomic and institutional reforms since 1986, it has made substantial progress toward becoming a market economy. As this transition continues, Viet Nam faces the challenge of formulating and implementing a growth strategy which is both economically and politically feasible. Critical to this growth strategy is the role of agriculture and, within agriculture, the development of an efficient rice marketing system. The emergence of Viet Nam as a major rice exporter has raised a number of important policy questions. First, will the country be able to continue its impressive growth? Second, how far has Viet Nam moved along the path toward a market economy?...
Tipo: Working or Discussion Paper
Palavras-chave: Crop Production/Industries; Marketing.
Ano: 1997
URL: http://purl.umn.edu/102532

A FARM LEVEL ANALYSIS OF THE RELATION BETWEEN CAP REFORMS AND LOCAL ENVIRONMENTAL LEGISLATIONS: HOW AND IN WHICH EXTENT FLEMISH DAIRY FARMERS CAN FILL UP EXTRA MILK QUOTA?
Provedor de dados: 31
Autores: Van der Straeten,   Bart; Buysse,   Jeroen; Nolte,   Stephan; Marchand,   Fleur L.; Lauwers,   Ludwig H.; Claeys,   Dakerlia; Van Huylenbroeck,   Guido.
The agricultural policies shift gradually from EU-level organised market interventions to local organised environmental policies. This paper explores the growth possibilities of the Flemish dairy sector with the outlook of a quota abolishment as a case study of this policy shift. The dairy quota policy seems very restrictive for the highly profitable Flemish dairy sector, but the environmental restrictions from the manure regulation can limit the growth of the dairy sector as well. The paper uses a spatial multi-agent simulation model applied to a sample of 40.000 farms to estimate price development of emission rights and their possible impact on the growth of the dairy production. The results show that a higher milk production leads to higher prices for...
Tipo: Conference Paper or Presentation
Palavras-chave: Milk quota; Manure emission rights; Mathematical programming; Flanders; Agricultural and Food Policy; Industrial Organization; Research Methods/ Statistical Methods; C02; C61; L11; Q18.
Ano: 2008
URL: http://purl.umn.edu/44846

GROWTH STAGE THEORIES AND AGRICULTURAL DEVELOPMENT POLICY
Provedor de dados: 31
Autores: Ruttan,   Vernon W.
Tipo: Journal Article
Palavras-chave: International Development.
Ano: 1965
URL: http://purl.umn.edu/22652

DISCUSSANT'S COMMENTS FOR AMERICAN AGRICULTURAL ECONOMICS ASSOCIATION ANNUAL MEETING, SELECTED PAPERS SESSION SP-7AA: "LOCATION DECISIONS AND ECONOMIC GROWTH"
Provedor de dados: 31
Autores: Kilkenny,   Maureen.
Rural decision makers use taxes and other resources to encourage growth. The session begins with an evaluation of rural employment patterns, then evaluates three economic development policy levers. Moderator: Daniel Rainey, Clemson University. Rural Employment Growth in the "New Economy:" A Test of the Spatial  Division of Labor Hypothesis Timothy Wojan, University of Kentucky. Relationship of Non-Basic Sector Employment Growth and the Gaming Sector Thomas Harris and Rangesan Narayanan, University of Reno-Nevada. Location Decisions of Energy-Intensive Manufacturing Firms: Estimating the Potential Impact of Electric Utilities Deregulation Stephan Goetz, University of Kentucky. A Self-Selection Model for Local and Regional Economic Development Programs Todd...
Tipo: Conference Paper or Presentation
Palavras-chave: Community/Rural/Urban Development; Labor and Human Capital; Resource /Energy Economics and Policy.
Ano: 1998
URL: http://purl.umn.edu/20923

Factors Affecting the Growth of Food and Beverage Manufacturers in New York State
Provedor de dados: 31
Autores: Hall,   Jeffrey S.; Schmit,   Todd M.
Tipo: Conference Paper or Presentation
Palavras-chave: Community/Rural/Urban Development; Marketing.
Ano: 2010
URL: http://purl.umn.edu/61396

PRICE STABILITY AND ECONOMIC GROWTH
Provedor de dados: 31
Autores: Wallis,   W. Allen.
Tipo: Conference Paper or Presentation
Palavras-chave: Agricultural Finance.
Ano: 1960
URL: http://purl.umn.edu/16994

PUBLIC CONSERVATION LAND AND EMPLOYMENT GROWTH IN THE NORTHERN FOREST REGION
Provedor de dados: 31
Autores: Lewis,   David A.; Hunt,   Gary L.; Plantinga,   Andrew J.
As with many environmental issues, debates about increasing public conservation lands in the Northern Forest region frequently center on a perceived tradeoff between jobs and the environment.  In particular, opponents of conservation lands often argue that employment will decline significantly when land is diverted from commodity-oriented uses such as wood products production.  To evaluate this claim, we estimate a model of simultaneous employment and net migration growth using data on the 92 non-metropolitan counties comprising the region.  Growth in employment and net migration are measured over the period 1990 to 1997 and the set of exogenous variables includes the 1990 share of the county land base in public conservation uses.  We find that net...
Tipo: Conference Paper or Presentation
Palavras-chave: Labor and Human Capital; Land Economics/Use.
Ano: 2001
URL: http://purl.umn.edu/20748

Korea's Export Growth: An Alternative Explanation
Provedor de dados: 31
Autores: Castley,   R.J.
Tipo: Working or Discussion Paper
Palavras-chave: International Relations/Trade.
Ano: 1995
URL: http://purl.umn.edu/30558

The Role of Clustering in Rural Industrialization:  A Case Study of the Footwear Industry in Wenzhou
Provedor de dados: 31
Autores: Huang,   Zuhui; Zhang,   Xiaobo; Zhu,   Yunwei.
Wenzhou used to be one of the poorest regions in eastern China. With limited arable land, poor road access to major cities, and little support from the upper level governments, this region seemed to lack all the conditions necessary for economic growth. However, over the past several decades Wenzhou has developed the most dynamic private sector in China, and has accordingly achieved one of the fastest growth rates. In particular, the footwear industry in Wenzhou has grown from a negligible market share to the largest in China. Here, we report a survey of 140 Wenzhou-based footwear enterprises of various scales, and use this information to examine the driving forces behind the dramatic rural industrial growth seen in this region. Our results show that...
Tipo: Working or Discussion Paper
Palavras-chave: Cluster; Industrialization; Finance; Economic development; Nonfarm economy.; Community/Rural/Urban Development.
Ano: 2007
URL: http://purl.umn.edu/42408

Relationship between Rural Financial Development and Farmer’s Income Growth
Provedor de dados: 31
Autores: Li,   Jing-jing; Qi,   Yan-bin.
According to the research on the relationship between rural finance and farmers’ income growth by domestic scholars, there are certain disadvantages in the stationary test, model design, data collection of time series data. According to the data from 1992 to 2005, per capita net income of farmers (y), rural credit investment (i), structure of rural employees (S) and price index of agricultural products (P) are selected as four indices. Eviews 5.0 software is used to analyze the relationship between rural financial development and income growth. OLS regression mode is established by Granger causality test, ADF test and co-integration relation test. Result shows that test statistic value is -2.8718, which is smaller than the -1.9710 critical value at 5%...
Tipo: Journal Article
Palavras-chave: Rural finance; Income growth of farmers; Granger Causality Test; Co-integration Test; China; Agribusiness.
Ano: 2009
URL: http://purl.umn.edu/93406

AGRICULTURAL GROWTH LINKAGES IN ZIMBABWE: INCOME AND EQUITY EFFECTS
Provedor de dados: 31
Autores: Bautista,   Romeo M.; Thomas,   Marcelle.
"September 1998." "MERRISA: Macro Economic Reforms and Regional Integration in Southern Africa." "Presented as a contributed paper at the IAAE Inter-conference Symposium, Challenges Facing Agriculture in Southern Africa, held in Badplaas, South Africa, on August 10-16, 1998"--P. 3. Includes bibliographical references (p. 13-14).
Tipo: Working or Discussion Paper
Palavras-chave: Income -- Rural areas -- Africa; Agricultural development -- Africa; Agricultural policy -- Economic aspects; Households -- Zimbabwe; Social accounting; International Development.
Ano: 1998
URL: http://purl.umn.edu/97549

Farm Growth, Consolidation, and Diversification: Washington Dairy Industry
Provedor de dados: 31
Autores: Skolrud,   Tristan D.; O'Donoghue,   Erik J.; Shumway,   C. Richard; Melhim,   Almuhanad.
Tipo: Journal Article
Palavras-chave: Farm Management; Q12.
Ano: 2007
URL: http://purl.umn.edu/94489

ECONOMIC GROWTH - ITS LABOR ASPECTS
Provedor de dados: 31
Autores: Wickens,   Aryness Joy.
Tipo: Conference Paper or Presentation
Palavras-chave: Labor and Human Capital.
Ano: 1963
URL: http://purl.umn.edu/17035

DISTRIBUTION AND GROWTH IN LATIN AMERICA IN AN ERA OF STRUCTURAL REFORM
Provedor de dados: 31
Autores: Morley,   Samuel A.
The first section of this paper reviews the most recent evidence on inequality in 18 Latin American countries and shows that in all but four the changes in inequality over the 1990s were small and insignificant. The distribution depends on the ownership and rate of return on assets, particularly human capital. In the short run changes in these two variables tend to be offsetting-growth widens skill-differentials which is regressive, but advances in education are progressive. The two effects roughly cancel each other out absent severe macroeconomic shocks or revolutionary changes in the rules of the game. The paper then summarizes various recent papers as well as the author’s recent work on the impact of structural reforms on inequality. That work shows...
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 2001
URL: http://purl.umn.edu/16312

Sources of Productivity Growth in Wheat: A Review of Recent Performance and Medium- to Long-Term Prospects
Provedor de dados: 31
Autores: Rejesus,   Roderick M.; Heisey,   Paul W.; Smale,   Melinda.
Sources of yield growth in wheat are investigated based on a stylized framework of technical change. Evidence suggests that the relative contribution of input intensification to yield growth has diminished in recent years and is likely to continue to decline in the future. One potential source of yield growth in wheat during the medium to long term is improved efficiency of input use, rather than input intensification, through sustainable wheat production practices rather than pure input increases. Other large gains could be made with continuous adoption of newer and better modern varieties based on advances in wheat breeding. Wide crossing and biotechnology could improve the stability of wheat yields in the intermediate term; their long-term impact on...
Tipo: Working or Discussion Paper
Palavras-chave: Crop Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/7693

Indian Agriculture: Managing Growth with Equity
Provedor de dados: 31
Autores: Gulati,   Ashok; Landes,   Maurice R.; Ganguly,   Kavery.
Tipo: Journal Article
Palavras-chave: International Development; Q13; Q17; Q18.
Ano: 2009
URL: http://purl.umn.edu/94722

LOCAL GOVERNMENT TAXING, SPENDING AND ECONOMIC GROWTH: NEW EVIDENCE FOR WISCONSIN
Provedor de dados: 31
Autores: Deller,   Steven C.; Lledo,   Victor.
Wisconsin is generally viewed as a high tax state. Depending on how one measures tax burdens, Wisconsin's rankings range from either the top five, or right in the middle of the national average. While these rankings have always been a source of discussion in Wisconsin, the state's current budget deficit, and the proposed solutions, has renewed the public debate about Wisconsin's fiscal policies with a vengeance. Accusations of duplication of services, higher costs inherent to the small scale of operation and a general tendency to be "big spenders" have created a firestorm of controversy. Further, a range of business support organizations has renewed yet again the call for tax reductions in the name of economic growth.  In this applied research study we...
Tipo: Working or Discussion Paper
Palavras-chave: Political Economy.
Ano: 2002
URL: http://purl.umn.edu/12665

Crescimento dos vales do Tietê e Paraná: um enfoque de estoques de capitais
Provedor de dados: 31
Autores: Bernardes,   Elaine Mendonca; Peres,   Fernando Curi; Pavarina,   Paula R. de J. Pinsetta.
The study aimed at identifying factors limiting the Tietê and Paraná valleys economic growth. Specifically, it analyzed the importance of the capital stocks for economic growth of these and the other counties in São Paulo State. Nine factors were generated by Principal Components Method to represent the capital stocks and were denominated: Human Capital I; Physical Capital; Social Capital I; Human Capital II; Financial Capital I; Social Capital II; Natural Capital I; Financial Capital II; Natural Capital II. The percentage of the total variance explained by each stock of capital was 19.5% (human); 8.3% (social); 6.0% (financial); 5.9% (physical), and 4.8% (natural). The study indicated that there are two different groups concerning the income index in the...
Tipo: Journal Article
Palavras-chave: Economic growth; Economic development; Regional development; Capital stocks; Income; Community/Rural/Urban Development.
Ano: 2007
URL: http://purl.umn.edu/54143

Microeconomic Flexibility in Latin America
Provedor de dados: 31
Autores: Caballero,   Ricardo J.; Engel,   Eduardo M.R.A.; Micco,   Alejandro.
We characterize the degree of microeconomic inflexibility in several Latin American economies and find that Brazil, Chile and Colombia are more flexible than Mexico and Venezuela. The difference in flexibility among these economies is mainly explained by the behavior of large establishments, which adjust more promptly in the more flexible economies, especially when accumulated shocks are substantial. We also study the path of flexibility in Chile and show that it declined in the aftermath of the Asian crisis. This decline can account for a substantial fraction of the large decline in TFP-growth in Chile since 1997 (from 3.1 percent per year for the preceding decade, to about 0.3 percent after that). Moreover, if it were to persist, it could permanently...
Tipo: Working or Discussion Paper
Palavras-chave: Microeconomic rigidities; Creative-destruction; Job flows; Restructuring and reallocation; Productivity growth; Financial Economics; E2; J2; J6.
Ano: 2004
URL: http://purl.umn.edu/28527

Eine empirische Untersuchung zum Wachstum von Milchviehbetrieben mittels der Ereignisanalyse
Provedor de dados: 31
Autores: Francksen,   Tammo; Hagemann,   Martin; Latacz-Lohmann,   Uwe.
This paper investigates determinants of growth of milk production in German dairy farms. Event history analysis is applied to estimate the likelihood of a farm’s moving from a nongrowing episode into a growing episode and to assess the impact of various covariates on that likelihood. The analysis is based upon a balanced panel of annual farm accounts from 616 specialised dairy farms from Germany, covering the financial years 1995/96 to 2008/09. Im vorliegenden Beitrag wird innerbetriebliches Wachstums von deutschen Milchviehbetrieben mittels der Ereignisanalyse untersucht. Dabei wird die Wahrscheinlichkeit des Austritts aus einer Nicht-Wachstumsepisode bzw. des Eintritts in eine Wachstumsepisode eines Bebetriebes geschätzt. Darüber hinaus werden...
Tipo: Conference Paper or Presentation
Palavras-chave: Event history analysis; Dairy farms; Internal growth; Determinants of growth; Ereignisanalyse; Milchviehbetriebe; Innerbetriebliches Wachstum; Einflussfaktoren auf Wachstum; Agribusiness.
Ano: 2011
URL: http://purl.umn.edu/114494

THE IMPORTANCE OF FINANCIAL SECTOR DEVELOPMENT FOR GROWTH AND POVERTY REDUCTION
Provedor de dados: 31
Tipo: Working or Discussion Paper
Palavras-chave: Financial Economics; Food Security and Poverty.
Ano: 2004
URL: http://purl.umn.edu/12886

The Bases for Regional Growth: A Review
Provedor de dados: 31
Autores: Edwards,   Clark.
Tipo: Book
Palavras-chave: Community/Rural/Urban Development.
Ano: 1981
URL: http://purl.umn.edu/100768

RESOURCE AND ENVIRONMENTAL CONSTRAINTS ON SUSTAINABLE GROWTH IN AGRICULTURAL PRODUCTION: REPORT ON A DIALOGUE
Provedor de dados: 31
Tipo: Working or Discussion Paper
Palavras-chave: Environmental Economics and Policy; Farm Management.
Ano: 1990
URL: http://purl.umn.edu/13427

EDUCATION AND ECONOMIC GROWTH
Provedor de dados: 31
Autores: Maki,   Wilbur R.
Tipo: Working or Discussion Paper
Palavras-chave: Community/Rural/Urban Development.
Ano: 1987
URL: http://purl.umn.edu/13538

Economic Growth and Poverty Reduction in Indochina: Lessons from East Asia
Provedor de dados: 31
Autores: Bautista,   Romeo M.
"September 1999." Includes bibliographical references (p. 25-27).
Tipo: Working or Discussion Paper
Palavras-chave: East Asia -- Economic conditions; Poverty.; Exports -- East Asia; Agricultural development; Vietnam; Viet Nam; Food Security and Poverty; International Development.
Ano: 1999
URL: http://purl.umn.edu/97534

Are High-Tech Employment and Natural Amenities Linked?: Answers from a Smoothed Bayesian Spatial Model
Provedor de dados: 31
Autores: Dorfman,   Jeffrey H.; Patridge,   Mark D.; Galloway,   Hamilton.
We investigate the recently advanced theory that high-technology workers are drawn to high amenity locations and then the high-technology jobs follow the workers.  Using a novel data set that tracks high-technology job growth by U.S. county, we estimate spatial parameters of the response of job growth to the level of local natural amenities.  We achieve this estimation with a reasonably new class of models, smooth coefficient models.  The model is employed in a spatial setting to allow for smooth, but nonparametric response functions to key variables in an  otherwise standard regression model. With spatial data this allows for flexible modeling such as a unique place-specific effects to be estimated for each location, and also for the responses to key...
Tipo: Conference Paper or Presentation
Palavras-chave: Bayesian econometrics; Employment growth; High technology; Smooth coefficient models; Spatial modeling.; Labor and Human Capital; Resource /Energy Economics and Policy.
Ano: 2008
URL: http://purl.umn.edu/6459

EMPLOYMENT GENERATION STRATEGIES FOR SMALL TOWNS:  AN OVERVIEW OF ALTERNATIVES
Provedor de dados: 31
Autores: Barkley,   David L.
Employment growth is a primary economic development goal of most small communities.  More jobs generally mean more residents, more spending at local businesses, and more tax revenues for local governments.  Thus job growth permits the expansion and improvement of public goods and services, leading to an improved local quality of life and enhanced prospects for future employment growth.  The purpose of this paper is to summarize the principal advantages and disadvantages associated with alternative employment generation strategies.  The discussion of community approaches to more and better jobs is organized as follows.  First, two theories of community economic growth are presented as background to the causes and effects of local employment change.  Second,...
Tipo: Working or Discussion Paper
Palavras-chave: Labor and Human Capital.
Ano: 2001
URL: http://purl.umn.edu/18791

EFFECTS OF TECHNOLOGICAL CHANGE AND INSTITUTIONAL REFORM ON PRODUCTION GROWTH IN CHINESE AGRICULTURE
Provedor de dados: 31
Autores: Fan,   Shenggen.
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 1990
URL: http://purl.umn.edu/13454

Macroeconomic and Global Growth Influences on the U.S. Agricultural Trade Balance
Provedor de dados: 31
Autores: Gehlhar,   Mark J.; Dohlman,   Erik.
Replaced with revised version of paper 07/20/06.
Tipo: Conference Paper or Presentation
Palavras-chave: International Relations/Trade.
Ano: 2006
URL: http://purl.umn.edu/21324

Linkages between government spending, growth, and poverty in rural India
Provedor de dados: 31
Autores: Fan,   Shenggen; Hazell,   Peter B.R.; Thorat,   Sukhadeo.
This research report on India addresses an important policy issue faced by policymakers in many developing countries: how to allocate public funds more efficiently in order to achieve both growth and poverty-reduction goals in rural areas. This research is particularly important at a time when many developing countries are undergoing substantial budget cuts as part of macroeconomic reforms and adjustment. The econometric model employed in this research includes a broad range of government expenditure items. It traces their effects on productivity growth and poverty alleviation and ranks them, exploring the potential trade-offs and complementarities of the two goals. Of the various investments weighed, the report finds that investments in rural roads and...
Tipo: Report
Palavras-chave: Rural poor; India; Domestic Economic assistance; Public investments; Government spending policy; Agricultural and Food Policy; Food Security and Poverty.
Ano: 1999
URL: http://purl.umn.edu/37898

RESPONSE - EXTERNAL FINANCE: A NECESSARY COMPONENT IN GROWTH PROJECTIONS FOR SOUTHERN AGRICULTURE
Provedor de dados: 31
Autores: Penson,   John B., Jr.
Tipo: Journal Article
Palavras-chave: Agricultural Finance.
Ano: 1977
URL: http://purl.umn.edu/29287

Open Markets, Economic Growth and Shared Prosperity - "The Luckiest Generation" (PowerPoint)
Provedor de dados: 31
Autores: Ambrose,   Albert J.
Tipo: Conference Paper or Presentation
Palavras-chave: Marketing.
Ano: 2007
URL: http://purl.umn.edu/8035

POPULATION: PAST GROWTH AND FUTURE CONTROL
Provedor de dados: 31
Autores: Poleman,   Thomas T.
Tipo: Working or Discussion Paper
Palavras-chave: Food Security and Poverty.
Ano: 1994
URL: http://purl.umn.edu/6845

GOVERNMENT SPENDING, GROWTH AND POVERTY: AN ANALYSIS OF INTERLINKAGES IN RURAL INDIA
Provedor de dados: 31
Autores: Fan,   Shenggen; Hazell,   Peter B.R.; Thorat,   Sukhadeo.
Poverty in rural India has declined substantially in recent decades. The percentage of the rural population living below the poverty line fluctuated between 50 and 65 percent prior to the mid-1960s, but then declined steadily to about one-third of the rural population by the early 1990s. This steady decline in poverty was strongly associated with agricultural growth, particularly the green revolution, which in turn was a response to massive public investments in agriculture and rural infrastructure. Public investment in rural areas has also benefitted the poor through its impact on the growth of the rural nonfarm economy, and government expenditure on rural poverty and employment programs, which has grown rapidly, has directly benefitted the rural poor....
Tipo: Working or Discussion Paper
Palavras-chave: Community/Rural/Urban Development.
Ano: 1998
URL: http://purl.umn.edu/16071

Linking Globalization, Economic Growth and Poverty: Impacts of Agribusiness Strategies on Sub-Saharan Africa
Provedor de dados: 31
Autores: Weatherspoon,   Dave D.; Cacho,   Joyce A.; Christy,   Ralph D.
Tipo: Working Paper
Palavras-chave: Agribusiness; International Development.
Ano: 2001
URL: http://purl.umn.edu/121131

ENTREPRENEURIAL RISK-TAKING VERSUS GROWTH MANAGEMENT: THE CASE OF PREMIER TECHNOLOGY, INC.
Provedor de dados: 31
Autores: Brester,   Gary W.; Boland,   Michael A.
Tipo: Journal Article
Palavras-chave: Agribusiness.
Ano: 2002
URL: http://purl.umn.edu/26827

International Trade and the Natural Resource 'Curse' in Southeast Asia: Does China's Growth Threaten Regional Development
Provedor de dados: 31
Autores: Coxhead,   Ian A.
China's growth, along with its increasing integration with world markets through WTO accession, abolition of Multifiber Arrangement (MFA) quotas, and reduced trade barriers with ASEAN, is expected to have significant effects on the structure of regional production and trade. Through bilateral trade growth as well as through competition with China in global markets, Southeast Asia's resource-abundant economies will become more intensive in natural resource-based exports and much less so in low-end, labor-intensive manufacturing such as garments. Both these effects will tend to increase demand for natural resources, one through a direct product market effect, the other by driving down the price of a complementary input, low-skill labor.  A question that then...
Tipo: Working or Discussion Paper
Palavras-chave: International Relations/Trade.
Ano: 2004
URL: http://purl.umn.edu/12600

Agricultural Research Sustains Productivity Growth and Earns High Returns
Provedor de dados: 31
Autores: Fuglie,   Keith O.; Heisey,   Paul W.
Tipo: Article
Palavras-chave: Productivity Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2008
URL: http://purl.umn.edu/124002

Owners' perceptions of factors that constrain the survival and growth of small, medium and micro agribusinesses in KwaZulu-Natal, South Africa
Provedor de dados: 31
Autores: Clover,   T.A.; Darroch,   Mark A.G.
Public and private sector institutions in KwaZulu-Natal (KZN), South Africa (SA) can identify policies and strategies to increase the survival and growth rates of small, medium and micro-enterprise (SMME) agribusinesses if they have more information about the factors that constrain business performance. The sustained growth of these SMMEs could, in turn, help to reduce poverty, income inequality and unemployment problems in the province. The owners of 44 agribusiness SMMEs in a stratified random sample of Ithala Development Finance Corporation clients in KZN were, therefore, surveyed during October 2003 and January 2004 to identify what factors they perceive constrain business survival and growth. The respondents identified eight dimensions of constraints,...
Tipo: Journal Article
Palavras-chave: Agribusiness.
Ano: 2005
URL: http://purl.umn.edu/31694

The Impact of Consulting Services on Small and Medium Enterprises: Evidence from a Randomized Trial in Mexico
Provedor de dados: 31
Autores: Bruhn,   Miriam; Karlan,   Dean S.; Schoar,   Antoinette.
We test whether managerial human capital has a first order effect on the performance and growth of small enterprises in emerging markets. In a randomized control trial in Puebla, Mexico, we randomly assigned 150 out of 432 small and medium size enterprises to receive subsidized consulting services, while the remaining 267 enterprises served as a control group that did not receive any subsidized training. Treatment enterprises were matched with one of nine local consulting firms and met with their consultants once a week for four hours over a one year period.  Results from a follow-up survey, conducted after the intervention, show that the consulting services had a large impact on the performance of the enterprises in the treatment group: monthly sales went...
Tipo: Working Paper
Palavras-chave: Enterprise growth; Entrepreneurship; Managerial capital; Labor and Human Capital; D21; D24; L20; M13; O12.
Ano: 2012
URL: http://purl.umn.edu/121675

Growth in Agricultural Productivity Limits Price Increases
Provedor de dados: 31
Autores: Kassel,   Kathleen; MacDonald,   James M.
Tipo: Article
Palavras-chave: International Relations/Trade; Productivity Analysis.
Ano: 2008
URL: http://purl.umn.edu/124045

World Trade Organization and Globalization Help Facilitate Growth in Agricultural Trade
Provedor de dados: 31
Autores: Effland,   Anne; Roberts,   Donna; Normile,   Mary Anne; Wainio,   John.
Tipo: Article
Palavras-chave: International Relations/Trade.
Ano: 2008
URL: http://purl.umn.edu/122956

The Effect of Entrepreneurship on Economic Growth in Alabama
Provedor de dados: 31
Autores: Starks,   Danyelle N.
Tipo: Presentation
Palavras-chave: Agribusiness.
Ano: 2012
URL: http://purl.umn.edu/119810

International Agricultural Productivity Growth: is there a consistent pattern across the methods?
Provedor de dados: 31
Autores: Nivievskyi,   Oleg.
Tipo: Conference Paper or Presentation
Palavras-chave: Productivity Analysis.
Ano: 2011
URL: http://purl.umn.edu/114609

ECONOMIC GROWTH IN MINNESOTA: COMPARED TO NEIGHBORING STATES AND THE U.S.
Provedor de dados: 31
Autores: Helmberger,   John D.
Tipo: Working or Discussion Paper
Palavras-chave: Community/Rural/Urban Development.
Ano: 1972
URL: http://purl.umn.edu/14036

Biodiesel: An Industry Poised for Growth?
Provedor de dados: 31
Autores: Gustafson,   Cole R.
Tipo: Journal Article
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2003
URL: http://purl.umn.edu/93713

Can Brazil Meet the World's Growing Need for Ethanol?
Provedor de dados: 31
Autores: Valdes,   Constanza.
Brazil will need to sustain production growth in the ethanol sector in order to meet increasing domestic demand and maintain its export share.
Tipo: Article
Palavras-chave: International Relations/Trade.
Ano: 2011
URL: http://purl.umn.edu/120791

AN EMPIRICAL ANALYSIS OF THE LINK BETWEEN ENTREPRENEURSHIP AND ECONOMIC GROWTH IN WEST VIRGINIA
Provedor de dados: 31
Autores: Mojica,   Maribel N.; Gebremedhin,   Tesfa G.; Schaeffer,   Peter V.
Tipo: Conference Paper or Presentation
Palavras-chave: Community/Rural/Urban Development.
Ano: 2009
URL: http://purl.umn.edu/46723

EDUCATION, TRAINING, AND ECONOMIC GROWTH
Provedor de dados: 31
Autores: Eldridge,   Eber.
Tipo: Conference Paper or Presentation
Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 1962
URL: http://purl.umn.edu/17994

Understanding Value Addition in Indian Dairy Sector: Some Perspectives
Provedor de dados: 31
Autores: Singh,   Shiv Raj; Datta,   K.K.
Indian dairy sector has shown tremendous growth in terms of milk production, from 17 million tonnes (1950-51) to 112 million tonnes (2009-10). This transition from deficiency to sufficiency has been achieved by a series of policy interventions by the government. It has been found that in the first phase of ‘Operation Flood’, growth rate of value-added products was 0.93 per cent per annum, but in the third phase, it became 9.10 per cent per annum. Milk processing in India is around 35 per cent, of which the organized dairy industry accounts for only 13 per cent of the milk produced, the remaining 22 per cent is processed in the unorganized sector. To explore the diversity and market exploration for enhancing the value in milk, the study has identified the...
Tipo: Journal Article
Palavras-chave: Agricultural and Food Policy.
Ano: 2010
URL: http://purl.umn.edu/96924

A Dynamic Approach to the FDI-Environment Nexus: The Case of China and India
Provedor de dados: 31
Autores: Baek,   Jungho; Koo,   Won W.
The cointegration analysis and a vector error-correction (VEC) model are applied to examine the short- and long-run relationships among foreign direct investment (FDI), economic growth, and the environment in China and India. The results show that FDI inflow plays a pivotal role in determining the short- and long-run movement of economic growth through capital accumulation and technical spillovers in the two countries. However, FDI inflow in both countries is found to have a detrimental effect on environmental quality in both the short- and long-run, supporting pollution haven hypothesis. Finally, it is found that, in the short-run, there exists a unidirectional causality from FDI inflow to economic growth and the environment in China and India - a change...
Tipo: Conference Paper or Presentation
Palavras-chave: China; Cointegration analysis; Environment; FDI; India; Vector error-correction; Research Methods/ Statistical Methods.
Ano: 2008
URL: http://purl.umn.edu/6508

Natural Resource Abundance and Economic Growth in a Two Country World
Provedor de dados: 31
Autores: Roe,   Terry L.; Gaitan,   Beatriz.
We investigate the dynamics of nonrenewable resource abundance on economic growth and welfare in a two-country world.  One country is endowed with a nonrenewable-resource, otherwise, countries are identical, except possibly for their initial endowments of capital.  Unlike previous studies analyzing small open economies, we show that once interactions between resource-rich and resource-less economies are considered the effect of the nonrenewable resource on the resource rich economy's performance can be positive.  We derive the necessary condition for the nonrenewable resource to have a positive (negative) effect on the growth rate of the resource-rich economy.  The endowment of the nonrenewable resource has a positive effect on the growth rate of the...
Tipo: Working or Discussion Paper
Palavras-chave: International Development; Resource /Energy Economics and Policy.
Ano: 2005
URL: http://purl.umn.edu/12979

Labor Specialization and Endogenous Growth
Provedor de dados: 31
Autores: Mohtadi,   Hamid; Kim,   Sunwoong.
Tipo: Working or Discussion Paper
Palavras-chave: International Development; Labor and Human Capital.
Ano: 1992
URL: http://purl.umn.edu/7452

Cashew Sub-sector Strategic Framework- Using Cashew Sector Markets for Pro-Poor Growth in Nigeria
Provedor de dados: 31
Autores: Nugawela,   Patrick; Oroh,   Roland.
Tipo: Report
Palavras-chave: Agricultural and Food Policy; Community/Rural/Urban Development; Crop Production/Industries.
Ano: 2005
URL: http://purl.umn.edu/53672

SOME IMPACTS OF INFLATION ON FARM FIRM GROWTH
Provedor de dados: 31
Autores: Patrick,   George F.
Tipo: Journal Article
Palavras-chave: Agricultural Finance.
Ano: 1978
URL: http://purl.umn.edu/30480

The influence of the natural environment and climate on life satisfaction in Australia
Provedor de dados: 31
Autores: Ambrey,   Christopher L.; Fleming,   Christopher M.
The narrative of the twentieth century is dominated by three key trends: population growth, economic growth and urbanisation. Moreover, these trends are expected to continue well into the twenty-first century. Australia has not been immune to these trends. Australia’s population is projected to increase by 65% to over 35 million by 2049, and be accompanied by an average growth in per-capita Gross Domestic Product of 1.5% per annum. Much of this population and economic growth will be concentrated in an already highly urbanised environment. As a consequence, the natural environment in which the majority of Australians live is likely to undergo rapid change. It is useful therefore, to better understand our relationship with this environment. Using data from...
Tipo: Conference Paper or Presentation
Palavras-chave: Resource /Energy Economics and Policy; C21; I31; R10.
Ano: 2011
URL: http://purl.umn.edu/100548

PRICE INFLATION AND MONEY STOCK GROWTH
Provedor de dados: 31
Autores: Starleaf,   Dennis R.
Tipo: Conference Paper or Presentation
Palavras-chave: Financial Economics.
Ano: 1979
URL: http://purl.umn.edu/17302

ECONOMIC GROWTH THROUGH REGIONAL ASSOCIATIONS
Provedor de dados: 31
Tipo: Conference Paper or Presentation
Palavras-chave: Community/Rural/Urban Development.
Ano: 1962
URL: http://purl.umn.edu/17970

Agricultural Productivity and Policies in Sub-Saharan Africa
Provedor de dados: 31
Autores: Yu,   Bingxin; Nin Pratt,   Alejandro.
We analyze the evolution of Sub-Saharan Africa’s agricultural total factor productivity (TFP) over the past 45 years, looking for evidence of recent changes in growth patterns using an improved nonparametric Malmquist index. Our TFP estimates show a remarkable recovery in the performance of Sub-Saharan Africa’s agriculture between 1984 and 2006 after a long period of poor performance and decline. That recovery is the consequence of improved efficiency in production resulting from changes in the output structure and an adjustment in the use of inputs. Policy interventions, including fiscal, trade and sector specific policies, appear to have played an important role in improving agriculture’s performance. Despite the improved agricultural performance, SSA...
Tipo: Conference Paper or Presentation
Palavras-chave: Agriculture; Efficiency; Malmquist index; Total factor productivity; Technical change; Sub-Saharan Africa; Policy; Agricultural and Food Policy; International Development; Productivity Analysis.
Ano: 2011
URL: http://purl.umn.edu/105400

Influencing Factors and Optimization of Agricultural Listed Companies in China
Provedor de dados: 31
Autores: Lin,   Xue; Jia,   Xian-wei.
This paper reviews the connotation of agricultural listed company and the related researches on capital structure theory of enterprises in China. Based on this, research hypothesis is put forward. Capital structure has positive correlation with the scale, growth and debt paying ability of agricultural listed company, and has negative correlation with the profitability, operating capability and cash capacity. Taking 37 agricultural listed companies as the research samples, a total of 15 financial indices reflecting the growth, profitability, enterprise scale, operating capacity, cash capability and debt paying ability are selected to conduct factor analysis. Based on the principle of eigenvalue greater than 1, five factors are ascertained, which can explain...
Tipo: Thesis or Dissertation
Palavras-chave: Agricultural listed company; Capital structure; Influencing factor; Optimization; China; Agribusiness; Industrial Organization.
Ano: 2009
URL: http://purl.umn.edu/54074

LOCAL BANK OFFICE OWNERSHIP, DEPOSIT CONTROL, MARKET STRUCTURE, AND ECONOMIC GROWTH
Provedor de dados: 31
Autores: Collender,   Robert N.; Shaffer,   Sherrill L.
The restructuring of commercial banking has heightened interest in its economic consequences both for the economy as a whole and for those most likely to bear adverse consequences:  small businesses, small banks, and rural areas.  Most previous research on bank restructuring focuses on changes in bank behavior.  In contrast, this paper focuses on the empirical association between local economic performance and changes in local bank market regulation and structure.  Findings suggest that mergers or acquisitions of local banks by nonlocal banks need not impair local economic growth, and may even have beneficial effects in rural markets, with the possible exception of farm-dependent areas.  These findings are derived from empirical models that relate both...
Tipo: Report
Palavras-chave: Commercial banking; Economic growth; Geographic liberalization; Bank ownership; Community/Rural/Urban Development; Financial Economics.
Ano: 2000
URL: http://purl.umn.edu/33555

Understanding Long-Term Energy Use and Carbon Dioxide Emissions in the USA
Provedor de dados: 31
Autores: Socolow,   Robert; Pacala,   Stephen W.; Tol,   Richard S.J.
We compile a database of energy uses, energy sources, and carbon dioxide emissions for the USA for the period 1850-2002. We use a model to extrapolate the missing observations on energy use by sector. Overall emission intensity rose between 1850 and 1917, and fell between 1917 and 2002. The leading cause for the rise in emission intensity was the switch from wood to coal, but population growth, economic growth, and electrification contributed as well. After 1917, population growth, economic growth and electrification pushed emissions up further, and there was no net shift from fossil to non-fossil energy sources. From 1850 to 2002, emissions were reduced by technological and behavioural change (particularly in transport, manufacturing and households),...
Tipo: Working or Discussion Paper
Palavras-chave: Environmental Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/12043

SOME IMPLICATIONS OF GROWTH IN THE MINERAL SECTOR: ERRATA
Provedor de dados: 31
Autores: Gregory,   R.G.
Tipo: Journal Article
Palavras-chave: Community/Rural/Urban Development; Resource /Energy Economics and Policy.
Ano: 1979
URL: http://purl.umn.edu/22596

CAPITAL MARKETS AND THE DYNAMICS OF GROWTH
Provedor de dados: 31
Autores: Shane,   Mathew.
Tipo: Working or Discussion Paper
Palavras-chave: Financial Economics.
Ano: 1973
URL: http://purl.umn.edu/13633

Measuring the Efficiency Effect of Banning Anti-Microbial Growth Promoters: The Case of Danish Pig Production
Provedor de dados: 31
Autores: Lawson,   Lartey Godwin; Sauer,   Johannes; Jensen,   Peter V.; Jensen,   Helen H.
This study examines the effect of banning antimicrobial growth promoters on efficiency in the production of weaned and slaughter (finishing) pigs. We focus on the reaction of producers and production efficiency. We evaluate the estimated output and input shadow prices relative to market prices to analyse producer reactions and capture the impact on production efficiency by evaluating the effects of the ban changes on total factor productivity. To this end we model a multi product shadow profit function and incorporate output and input related shadow prices by using a second order flexible functional form. The development in total factor productivity is subsequently measured by calculating the Malmquist index on the farm level. To make infer-ences on the...
Tipo: Conference Paper or Presentation
Palavras-chave: Animal health economics; Food economics; Shadow prices; Efficiency; Antimicrobial growth promoters; Pig production; Livestock Production/Industries; Q1; Q11; Q12; Q24.
Ano: 2007
URL: http://purl.umn.edu/9995

Toward Better Defining the Field of Agribusiness Management
Provedor de dados: 31
Autores: Ng,   Desmond W.; Siebert,   John W.
www.ifama.org
Tipo: Journal Article
Palavras-chave: Agribusiness management; Authority; Bounded rationality; Diversified growth; Resources.; Agribusiness; Resource /Energy Economics and Policy; Q1.
Ano: 2009
URL: http://purl.umn.edu/92566

WHAT IS THE CAUSE OF GROWTH IN REGIONAL TRADE: TRADE LIBERALIZATION OR RTA'S? THE CASE OF AGRICULTURE
Provedor de dados: 31
Autores: Diao,   Xinshen; Roe,   Terry L.; Somwaru,   Agapi.
This paper delves into the debate on the proliferation of regional trade arrangements by focusing on bilateral agricultural trade data over the 1962-1995 period for countries that currently are members of NAFTA, Mercosur, the EU and APEC.  Agricultural is chosen because it has historically been protected by developed and dis-protected by developing nations, while in the case of the EU, its Common Agricultural Policy was the major policy jointly managed and funded by member countries. We suggest that the literature has tended to focus on factors explaining the level of trade, and neglected factors affecting growth in trade. While neighborhood characteristics affect neighborhood trade, they also appear to affect the policy regimes of neighboring countries....
Tipo: Working or Discussion Paper
Palavras-chave: International trade; Regional trade arrangements; Agricultural trade; International Relations/Trade.
Ano: 1999
URL: http://purl.umn.edu/14605

Agricultural Inter-Sectoral Linkages and Its Contribution to Economic Growth in the Transition Countries
Provedor de dados: 31
Autores: Subramaniam,   Vijay; Reed,   Michael R.
This study estimates an econometric model that incorporates the linkages among agriculture, manufacturing, service and trade sectors using a vector error correction model for Poland and Romania. Three cointegrating vectors for Poland and one for Romania confirm that the different sectors in the Poland and Romania moved together over the sample period, and for this reason, their growth rates are interdependent. The long-run relationship of industrial, service and trade sectors to agricultural sector were established, and the results show that the industrial sector in Poland contributes positively to the agricultural sector while the growing service sector shows mixed results. The results of Romania indicate that the industrial sector is detrimental to...
Tipo: Conference Paper or Presentation
Palavras-chave: Transition economy; Inter-sectoral growth linkages; Cointegration analysis; International Development; Research Methods/ Statistical Methods; P20; 041; C32.
Ano: 2009
URL: http://purl.umn.edu/51586

The Food Problem and the Evolution of International Income Levels
Provedor de dados: 31
Autores: Gollin,   Douglas; Parente,   Stephen L.; Rogerson,   Richard.
This paper examines the effect of agricultural development on a country’s overall development and growth experience. In most poor countries, large fractions of land, labor, and other productive resources are devoted to producing food for subsistence needs. This “food problem” can delay a country’s industrial development for a long period of time, causing its per capita income to fall far behind the world leader. Once industrialization begins, this trend is reversed. The extent to which a country catches up to the leader depends primarily on factors that affect productivity in non-agricultural activities: agricultural productivity is thus largely irrelevant in the very long run. But in the short run, a country that experiences large improvements in...
Tipo: Working or Discussion Paper
Palavras-chave: Agriculture; Economic growth; Subsistence; Food problem; Agricultural technology; Long-run growth; Food Security and Poverty; E130; O400; O410; Q100.
Ano: 2004
URL: http://purl.umn.edu/28416

FACTORS IN ECONOMIC GROWTH
Provedor de dados: 31
Autores: Saulnier,   Raymond J.
Tipo: Conference Paper or Presentation
Palavras-chave: Community/Rural/Urban Development.
Ano: 1963
URL: http://purl.umn.edu/17029

Dynamic Decomposition of Total Factor Productivity Change in the EU Food, Beverages, and Tobacco Industry: The Effect of R&amp;D
Provedor de dados: 31
Autores: Emvalomatis,   Grigorios; Stefanou,   Spiro E.; Oude Lansink,   Alfons G.J.M.
The main objective of this paper is to generate measures of TFP change for the food, beverages, and tobacco industry in the EU. Explicitly taking into account the fact that some of the inputs used in the industry are fixed in the short run, the generated measures of TFP change reflects the dynamic nature of the problem. The second objective is to analyse TFP change into its components and explicitly examine the effect of Research and Development (R&amp;D) effort on TFP growth. Data are collected from EU KLEMS and the OECD Structural Analysis database. The data contain country-level information on output volume, input prices and capital stock, as well as R&amp;D expenditure for the food, beverages, and tobacco industry for the 15 “old” EU Member States....
Tipo: Conference Paper or Presentation
Palavras-chave: TFP change; Food Industry; R&amp;D.; Agricultural and Food Policy.
Ano: 2009
URL: http://purl.umn.edu/58011

The environment in the dynamics and interactions between economic growth and openness to international trade
Provedor de dados: 31
Autores: Nappo,   Alessandra Francesca.
Tipo: Conference Paper or Presentation
Palavras-chave: Environmental Economics and Policy; International Relations/Trade.
Ano: 2011
URL: http://purl.umn.edu/114631

Empirical Research on the Relations between farmers’ income increase and economic development in Henan Province
Provedor de dados: 31
Autores: Wang,   Hao.
According to data of per capita net income of rural households and the per capita regional gross output from 1978 to 2008 provided by the Henan Statistical Yearbook , we know that both of the time series obey the unit root process, so they belong to non-stationary time series.    The results of the Engle-Granger two-stage estimation method show that the two terms have long-term stable integration equilibrium relations.  The results of Granger Causality Test show that there is only the one way Granger Causality relation from farmers’ income increase to economic growth. Connecting with the reality of Henan Province, the possible reasons are analyzed. The population of rural residents is huge and the income level of the rural residents are low, and the...
Tipo: Journal Article
Palavras-chave: Farmers’ income; Economic growth; Granger Causality Test; Co-integration analysis; China; Agribusiness.
Ano: 2010
URL: http://purl.umn.edu/102383

Market Potential for U.S. Distillers' Grains Exceeds Likely Supply Growth
Provedor de dados: 31
Autores: Hoffman,   Linwood A.; Dohlman,   Erik.
Tipo: Article
Palavras-chave: Food Security and Poverty.
Ano: 2011
URL: http://purl.umn.edu/120967

SIMULATING ALTERNATIVE GROWTH POLICY SCENARIOS FOR A METROPOLITAN REGION
Provedor de dados: 31
Autores: Maki,   Wilbur R.
Tipo: Working or Discussion Paper
Palavras-chave: Community/Rural/Urban Development.
Ano: 1977
URL: http://purl.umn.edu/13882

China's Growth Strategies
Provedor de dados: 31
Autores: Headey,   Derek D.; Kanbur,   Ravi; Zhang,   Xiaobo.
Tipo: Working or Discussion Paper
Palavras-chave: Food Security and Poverty; International Development; Political Economy.
Ano: 2008
URL: http://purl.umn.edu/51156

THE ANATOMY OF 'BALANCED' GROWTH IN AGRICULTURE
Provedor de dados: 31
Autores: Rembisz,   Wlodzimierz.
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 1989
URL: http://purl.umn.edu/13650

The wage and employment policy impact for productive sectors in Nicaragua, 1994-2010
Provedor de dados: 31
Autores: Zúniga-González,   Carlos Alberto.
This paper is a serie work as Researching Centre for Agrarian Sciences and Applied Economic contribution to rural development.
Tipo: Working Paper
Palavras-chave: Malmquist Index; Economic Growth; Economic Sub sector; Wage Policy; Employ Policy; Total factor Productivity (TFP; Productivity Analysis; E:58; E:61; O:11; O:47.
Ano: 2011
URL: http://purl.umn.edu/118454

From Coffee Beans to Microchips: Export Diversification and Economic Growth in Costa Rica
Provedor de dados: 31
Autores: Ferreira,   Gustavo F.C.
During the early 1980s Costa Rica experienced its worst economic crisis since World War II, which led to the abandonment of the import substitution model of development adopted in the 1960s. This severe economic downturn also spurred the implementation of a series of new policies supporting foreign investment in high-value-added industries and the diversification of the nation’s exports. As a result, Costa Rica has diversified its economic activity, moved away from its historical dependence on agricultural exports, and gained new competitive advantages in the manufacturing sector. This study presents a straightforward generalization of the model proposed by Herzer and Nowak-Lehnmann’s (2006) to test the hypothesis that export diversification has influenced...
Tipo: Working or Discussion Paper
Palavras-chave: International Relations/Trade.
Ano: 2009
URL: http://purl.umn.edu/47178

AGRICULTURAL POLICIES AND ECONOMIC GROWTH
Provedor de dados: 31
Autores: Southworth,   Herman M.
Tipo: Conference Paper or Presentation
Palavras-chave: Agricultural and Food Policy.
Ano: 1960
URL: http://purl.umn.edu/16987

DISCUSSION: RISK AND FINANCIAL MANAGEMENT IMPLICATIONS FOR FIRM GROWTH IN AN UNCERTAIN MARKET
Provedor de dados: 31
Autores: Martin,   Neil R., Jr.
Tipo: Journal Article
Palavras-chave: Risk and Uncertainty.
Ano: 1979
URL: http://purl.umn.edu/29553

Study on Population Forecast Model in Planning of Land Use
Provedor de dados: 31
Autores: Zhang,   Yan-fen; Li,   Ying-chao; Chen,   Wei-qiang.
On the basis of describing characteristics and condition of application of natural growth model of population, weighted average growth model, regression forecast model and GM（1,1）forecast model, taking Gushi County in Henan Province as an example, according to the statistics of population in Gushi County Statistical Yearbook from 1991 to 2007, we establish four models to conduct fitting on population change respectively, and meanwhile, we predict population size from 2008 to 2009 and conduct preciseness test on the population size. The test results show that the preciseness of forecast results of natural growth model is not high, and the preciseness of forecast results of weighted average growth model is not scientific when the total size of population is...
Tipo: Journal Article
Palavras-chave: Planning of land use; GM ( 1-1）gray forest model; Population forecast model; Regression forecast model; China; Agribusiness.
Ano: 2011
URL: http://purl.umn.edu/113485

Productivity growth and the returns from public investment in R&amp;D in Australian broadacre agriculture
Provedor de dados: 31
Autores: Mullen,   John D.
Investment in R&amp;D has long been regarded as an important source of productivity growth in Australian agriculture. Perhaps because research lags are long, current investment in R&amp;D is monitored closely. Investment in R&amp;D has been flat while productivity growth has remained strong, relative both to other sectors of the Australian economy and to the agricultural sectors of other countries. Such productivity growth, at a time when the decline in terms of trade facing Australian farmers has slowed, may have enhanced the competitiveness of Australian agriculture. The econometric results presented here suggest no evidence of a decline in the returns from research from the 15 to 40 per cent per annum range estimated by Mullen and Cox. In fact the...
Tipo: Article
Palavras-chave: Productivity; Research and development; Research evaluation; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2007
URL: http://purl.umn.edu/118518

INFLATION AND ECONOMIC GROWTH
Provedor de dados: 31
Autores: McCracken,   Paul W.
Tipo: Conference Paper or Presentation
Palavras-chave: Financial Economics.
Ano: 1969
URL: http://purl.umn.edu/17012

CAPITAL MARKETS AND THE STABILITY OF THE GROWTH PROCESS
Provedor de dados: 31
Autores: Shane,   Mathew.
Tipo: Working or Discussion Paper
Palavras-chave: Financial Economics.
Ano: 1970
URL: http://purl.umn.edu/13795

STRATEGIES DEVELOPED BY LEADING EU AGRI-FOOD COOPERATIVES IN THEIR GROWTH MODEL
Provedor de dados: 31
Autores: Julia-Igual,   Juan F.; Garcia-Martinez,   Gabriel; Melia-Marti,   Elena.
The rationale for this paper is the problem relating to the growth of agricultural cooperatives in Spain in recent years in comparison to increasingly concentrated food distribution, which captures most of the value added. This paper analyses the evolution and status of other countries within Europe where the need for business consolidation has been successfully addressed. For this purpose, there have been identified 7 cases to be studied: Kerry group, Irish Dairy Board, Arla Foods, The Greenery BV, Danish Crown, Agrifirm and DLG. The specific results of interviews with the senior management of this cooperatives were analyzed and organized into four blocks in which the issues raised are grouped (legal and institutional framework, strategic vision, business...
Tipo: Conference Paper or Presentation
Palavras-chave: Agribusiness.
Ano: 2011
URL: http://purl.umn.edu/114453

The Rise of China and India and the Commodity Boom: Economic and Environmental Implications for Low-Income Countries
Provedor de dados: 31
Autores: Coxhead,   Ian A.; Jayasuriya,   Sisira.
The rapid growth of China and, more recently, of India, is having major effects on every facet of the global economy. The supply of labor-intensive manufactured exports (from China in particular) has been accompanied by a huge expansion in their imports both of raw materials and of skill-intensive manufactured parts and components. This ‘offshoring’ of intermediates production by large, labor-abundant economies has economic and environmental implications for other developing economies drawn into their trade networks. We sketch a trade-theoretic model showing how the growth of the ‘giants’ generates adjustment pressures on their trading partners and competitors among developing economies. We discuss in particular how differences in relative factor...
Tipo: Working or Discussion Paper
Palavras-chave: Environmental Economics and Policy; International Development.
Ano: 2008
URL: http://purl.umn.edu/92208

Threshold Effects and Regional Economic Growth - Evidence from West Germany
Provedor de dados: 31
Autores: Funke,   Michael; Niebuhr,   Annekatrin.
We study an overlapping generations model of human capital accumulation with threshold effects using regional data for West Germany. Our basic goal is to shed light on the growth of West German regions. The paper finds that the relative income distribution appears to be stratifying into a trimodal distribution. Thus, application of the threshold model to a real world case, here West Germany, shows that the model might help to explain regional growth patterns. Ausgangspunkt der Analyse ist ein Modell überlappender Generationen der Humankapitalakkumulation mit Schwellenwert-Effekten. Die empirische Überprüfung des Modells basiert auf einem regionalen Datensatz für Westdeutschland. Das zentrale Ziel der Untersuchung ist es, Erkenntnisse zum Wachstum...
Tipo: Working or Discussion Paper
Palavras-chave: Regional Economic Growth; Human Capital; Germany; Labor and Human Capital; J24; O40; R11; C31.
Ano: 2001
URL: http://purl.umn.edu/26141

Relationship between ethics and Fair Trade supply chain organisation and performance: the case of Italian Alternative Trade Organisations (ATO’s)
Provedor de dados: 31
Autores: Zanasi,   Cesare; Paluan,   Lorenzo.
Fair Trade related import from developing countries is quickly growing although it still represents a small share of the total import. Its influence on the development of  rural areas in developing countries is  related to both quantitative growth and the respect of its ethical code. Large food multi-national companies are increasingly interested in Fair Trade; part of the Fair Trade movement considers the risk of a related loss in the products’ identity; others consider the refusal of a more "professional" approach to Fair Trade management as a constraint to its growth. This debate is particularly felt in Italy. The goal of this paper is to evaluate how the most important Italian Fair Trade importers (ATO’s) business models influenced their growth...
Tipo: Conference Paper or Presentation
Palavras-chave: Fair Trade; Logistics; Alternative Trade Organisations; Agribusiness; International Relations/Trade.
Ano: 2007
URL: http://purl.umn.edu/7889

Growth and Prosperity: Still the Best Ways of Reducing Poverty
Provedor de dados: 31
Autores: Cutbertson,   Sandy.
Tipo: Presentation
Palavras-chave: Food Security and Poverty.
Ano: 2001
URL: http://purl.umn.edu/124436

IDENTIFYING RESOURCE BARRIERS TO LOCAL ECONOMY GROWTH
Provedor de dados: 31
Autores: Roberts,   Kenneth J.
Tipo: Journal Article
Palavras-chave: Community/Rural/Urban Development.
Ano: 1975
URL: http://purl.umn.edu/29677

GROWTH, DISTRIBUTION AND POVERTY IN MADAGASCAR: LEARNING FROM A MICROSIMULATION MODEL IN A GENERAL EQUILIBRIUM FRAMEWORK
Provedor de dados: 31
Autores: Cogneau,   Denis; Robilliard,   Anne-Sophie.
This paper presents an applied microsimulation model built on household data with explicit treatment of heterogeneity of skills, labor preferences and opportunities, and consumption preferences at the individual and/or household level, while allowing for an endogenous determination of relative prices between sectors. The model is primarily focused on labor markets and labor allocation at the household level, but consumption behavior is also modeled. Modeling choices are driven by a desire to make the best possible use of microeconomic information derived from household data. This framework supports analysis of the impact of different growth strategies on poverty and income distribution, without making use of the “representative agent” assumption. The model...
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 2000
URL: http://purl.umn.edu/16314

Productivity Growth Drives Expanded Agricultural Production
Provedor de dados: 31
Autores: Kassel,   Kathleen; MacDonald,   James M.; Wang,   Sun Ling.
Tipo: Article
Palavras-chave: Productivity Analysis.
Ano: 2008
URL: http://purl.umn.edu/124040

Economic Growth and the Environment with Clean and Dirty Consumption
Provedor de dados: 31
Autores: Orecchia,   Carlo; Tessitore,   Maria Elisabetta.
This paper aims to verify the existence of the Environmental Kuznets Curve (EKC) or inverted U-shaped relationship between economic growth and environmental degradation in the context of endogenous growth. An important feature of this study is that the EKC is examined in the presence of pollution as a by product of consumption activities; also, pollution is a stock variable rather than a flow and tends to accumulate over time. In order to highlight the role of consumption on the environment, consumers do not consider directly pollution in the maximization problem and are assumed to choose between two different consumption types, characterized by a different impact on the environment (i.e. dirty and clean consumption). We find that substitution of dirty...
Tipo: Working or Discussion Paper
Palavras-chave: Environmental Kuznets Curve; Economic Growth; Pollution; Consumption; Consumption behaviour; Environmental Economics and Policy; C61; Q56; O44.
Ano: 2011
URL: http://purl.umn.edu/115734

THE POTENTIAL IMPACT OF AIDS ON POPULATION AND ECONOMIC GROWTH RATES
Provedor de dados: 31
Autores: Brown,   Lynn R.
Tipo: Working or Discussion Paper
Palavras-chave: Health Economics and Policy; International Development.
Ano: 1997
URL: http://purl.umn.edu/16334

A Note on Technical Efficiency, Productivity Growth and Competitiveness
Provedor de dados: 31
Autores: Nivievskyi,   Oleg; Brümmer,   Bernhard; von Cramon-Taubadel,   Stephan.
‘Productivity and efficiency growth enhances competitiveness’. Similarly formulated statements are common in the literature on the economic performance of firms, industries and nations. This conventional perception in the economic literature, originating from trade and growth theory models, however, lacks a clearly defined mathematical formulation. Earlier work by Page (1980) and Nishimizu and Page (1986) provides an elegant formalization of the relationship between the productivity growth and competitiveness measured by the Domestic Resource Costs (DRC) ratio. However, the relationship between technical efficiency and competitiveness has not been addressed in the literature. Moreover, the DRC is a biased measure of competitiveness. We propose static and...
Tipo: Conference Paper or Presentation
Palavras-chave: Agribusiness.
Ano: 2010
URL: http://purl.umn.edu/61759

The trend and financing of investment at the macro level in Uganda: The implications for sustainable growth
Provedor de dados: 31
Tipo: Report
Palavras-chave: Investment; Capital flows; Trade finance; EPRC; Agribusiness; Financial Economics; Institutional and Behavioral Economics; Marketing.
Ano: 2005
URL: http://purl.umn.edu/93815

The Internet's Contribution to Progress and Growth in Germany: The Economic Impact of the Internet and the Price Structure of Access
Provedor de dados: 31
Autores: Cigan,   Heidi.
Tipo: Working or Discussion Paper
Palavras-chave: International Development; Public Economics.
Ano: 2002
URL: http://purl.umn.edu/26072

THE IMPACT OF RESEARCH LED AGRICULTURAL PRODUCTIVITY GROWTH ON POVERTY REDUCTION IN AFRICA, ASIA AND LATIN AMERICA
Provedor de dados: 31
Autores: Thirtle,   Colin G.; Lin,   Lin; Piesse,   Jenifer.
Twenty percent of the world population, or 1.2 billion live on less than $1 per day; 70% of these are rural and 90% in Asia and Sub-Saharan Africa.  Research led technological change in agriculture generates sufficient productivity growth to give high rates of return in African and Asia and has a substantial impact on poverty, currently reducing this number by 27 million per annum, whereas productivity growth in industry and services has no impact.  The per capita "cost" of poverty reduction by means of agricultural research expenditures in Africa is $144 and in Asia $180, or 50 cents per day, but this is covered by output growth.  By contrast, the per capita cost for the richer countries of Latin America is over $11,000.
Tipo: Conference Paper or Presentation
Palavras-chave: Agricultural Productivity; Poverty Reduction; Food Security and Poverty; Research and Development/Tech Change/Emerging Technologies; 011; 013; 015.
Ano: 2003
URL: http://purl.umn.edu/25834

DISCUSSION: ECONOMIC GROWTH OF THE SOUTH VERSUS OTHER REGIONS: PAST TRENDS AND FUTURE PROSPECTS
Provedor de dados: 31
Autores: Waldrop,   John E.
Tipo: Journal Article
Palavras-chave: Community/Rural/Urban Development.
Ano: 1982
URL: http://purl.umn.edu/29591

MINNESOTA AGRICULTURAL GROWTH, 1880-1970: APPENDIX
Provedor de dados: 31
Autores: Fitzharris,   Joseph C.
Tipo: Working or Discussion Paper
Palavras-chave: Community/Rural/Urban Development.
Ano: 1976
URL: http://purl.umn.edu/13374

Input-output Concepts, Profits and Productivity Growth: An Application Using Flemish Farm Level Data
Provedor de dados: 31
Autores: de Mey,   Yann; Vancauteren,   Mark; Van Passel,   Steven.
Tipo: Conference Paper or Presentation
Palavras-chave: Farm Management; Productivity Analysis.
Ano: 2011
URL: http://purl.umn.edu/114448

THE ECONOMICS OF COMMUNITY GROWTH: AN IMPACT MODEL
Provedor de dados: 31
Autores: Clayton,   Kenneth C.; Whittington,   David.
Tipo: Journal Article
Palavras-chave: Community/Rural/Urban Development.
Ano: 1977
URL: http://purl.umn.edu/29299

Divergence - Is it Geography?
Provedor de dados: 31
Autores: Straubhaar,   Thomas; Suhrcke,   Marc; Urban,   Dieter.
This paper tests a geography and growth model using regional data for Europe, the US, and Japan. We set up a standard geography and growth model with a poverty trap and derive a log-linearized growth equation that corresponds directly to a threshold regression technique in econometrics. In particular, we test whether regions with high population density (centers) grow faster and have a permanently higher per capita income than regions with low population density (peripheries). We find geography driven divergence for US states and European regions after 1980. Population density is superior in explaining divergence compared to initial income which the most important official EU eligibility criterium for regional aid is built on. Divergence is stronger on...
Tipo: Working or Discussion Paper
Palavras-chave: Threshold estimation; New economic geography; Regional income; Growth; Poverty trap; Regime shifts; Bootstrap; International Development; O41; R11; F12.
Ano: 2002
URL: http://purl.umn.edu/26350

ECONOMIC GROWTH OF THE SOUTH VERSUS OTHER REGIONS: PAST TRENDS AND FUTURE PROSPECTS
Provedor de dados: 31
Autores: Bluestone,   Herman.
Tipo: Journal Article
Palavras-chave: Community/Rural/Urban Development.
Ano: 1982
URL: http://purl.umn.edu/29567

Sustaining and Accelerating Africa’s Agricultural Growth Recovery in the Context of Changing Global Food Prices
Provedor de dados: 31
Autores: Badiane,   Ousmane.
Tipo: Report
Palavras-chave: International Development.
Ano: 2008
URL: http://purl.umn.edu/50000

STOCHASTIC FRONTIER ANALYSIS OF NEW ZEALAND'S MANUFACTURING INDUSTRIES: SOME EMPIRICAL RESULTS
Provedor de dados: 31
Autores: Gounder,   Rukmani; Xayavong,   Vilaphonh.
This paper examines the sources of total factor productivity growth (TFP) in New Zealand's manufacturing industries over the period 1978-98 and over various sub-periods. Examination of the data adopts two stages using a stochastic frontier approach. The first stage involves the specification and estimation of the stochastic frontier production function and the prediction of technical efficiency effects. The second stage involves the specification of a regression model for the predicted technical efficiency effects. The sources of TFP growth have been decomposed into four components; i.e. technical progress, changes in technical efficiency, scale effects, and change in allocative efficiency. The empirical results show that productivity has been largely due...
Tipo: Working or Discussion Paper
Palavras-chave: New Zealand Manufacturing Sector; Total Productivity Growth; Technical Progress; Technical Efficiency; Scale Components; Allocative Efficiency; Industrial Organization; D24; C23; O47.
Ano: 2004
URL: http://purl.umn.edu/23714

CHILD NUTRITION AND ECONOMIC GROWTH IN VIETNAM IN THE 1990S
Provedor de dados: 31
Autores: Glewwe,   Paul; Koch,   Stefanie; Nguyen,   Bui Linh.
Child malnutrition is pervasive in almost every developing country. Economic growth can lead to better child nutrition, but the size and nature of this effect can vary widely across countries.  This first part of this paper examines the impact of increased household income on children's nutritional status on Vietnam, a country with a high rate of economic growth in the 1990s.  It finds that increases in household incomes lead to statistically significant improvements in children's nutritional status, but the size of this effect explains only a small proportion of the reduction in child malnutrition in Vietnam in the 1990s.  This suggests that something else occurred in Vietnam during those years that reduced child malnutrition.  A preliminary analysis of...
Tipo: Conference Paper or Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2001
URL: http://purl.umn.edu/20443

REDIRECTING STATE ECONOMIC GROWTH
Provedor de dados: 31
Autores: Maki,   Wilbur R.
Tipo: Working or Discussion Paper
Palavras-chave: Community/Rural/Urban Development.
Ano: 1985
URL: http://purl.umn.edu/13874

Risk in Output Growth of Oilseeds in the Rajasthan State: A Policy Perspective
Provedor de dados: 31
Autores: Jain,   Praveen Kumar; Singh,   I.P.; Kumar,   Anil.
Today, India is one of the largest producers of oilseeds in the world and this sector occupies an important position in the agricultural economy. Rajasthan state occupies a prominent place in the oilseeds production of India. The important oilseed crops of the Rajasthan state are groundnut, soyabean, rapeseed &amp; mustard, sesamum and taramira. The growth pattern of these crops in the state has been prone to risk over time and across the agro-climatic regions because of the rainfall behaviour, prolonged drought-periods, limited water-resources and facilities available in the state Under such a situation, growth performances of these crops are subjected to high degree of risks in the sector. Therefore, it is important to describe the growth pattern of...
Tipo: Journal Article
Palavras-chave: Agricultural and Food Policy.
Ano: 2005
URL: http://purl.umn.edu/58465

DEVELOPMENT AND THE ENVIRONMENT IN ASIA: A SURVEY OF RECENT LITERATURE
Provedor de dados: 31
Autores: Coxhead,   Ian A.
Economic growth and environmental damage are associated, but the relationship is neither linear nor even monotonic. This is clearly seen in the diverse experiences of tropical Asian economies over recent decades. The nature of the growth-environment link depends on the changing composition of production and on growth-related changes in techniques and environmental policies; the enforcement of property rights over natural resources and over air and water quality is another important element. Moreover, environmental and economic policies interact: in effect, every economic policy that affects resource allocation is a de facto environmental measure. One important implication is that the environmental consequences of major policy shifts, such as the...
Tipo: Working or Discussion Paper
Palavras-chave: Environmental Economics and Policy.
Ano: 2002
URL: http://purl.umn.edu/12650

Does Human Capital Affect Rural Economic Growth? Evidence from the South
Provedor de dados: 31
Autores: Barkley,   David L.; Henry,   Mark S.; Li,   Haizhen.
Tipo: Report
Palavras-chave: Community/Rural/Urban Development; Labor and Human Capital.
Ano: 2004
URL: http://purl.umn.edu/113779

ECONOMIC GROWTH AND NEW MIDDLE CLASS CONSUMERS IN DEVELOPING NATIONS
Provedor de dados: 31
Autores: Chambliss,   Mary.
REMARKS
Tipo: Conference Paper or Presentation
Palavras-chave: Consumer/Household Economics.
Ano: 2002
URL: http://purl.umn.edu/33537

RURAL DEVELOPMENT POLICY AND BALANCED NATIONAL GROWTH
Provedor de dados: 31
Autores: Coffey,   Joseph D.
Tipo: Conference Paper or Presentation
Palavras-chave: Community/Rural/Urban Development.
Ano: 1972
URL: http://purl.umn.edu/17335

Priorities and Preconditions for Successful Investment in Smallholder Agriculture in Sub-Saharan Africa
Provedor de dados: 31
Autores: Poulton,   Colin; Dorward,   Andrew; Jowett,   A.; Peacock,   C.; Urey,   Ian.
In the past couple of years, there has been resurgence in interest in smallholder agriculture as a potential driver for growth and poverty reduction in Sub-Saharan Africa. However, there remains considerable skepticism as to whether public investment in smallholder agriculture will lead to the desired growth and poverty reduction, given a general pessimism about "absorptive capacity" for (public) investment in Africa, the perception of failure of past agricultural investment and the observation that current conditions are unconducive to agricultural growth in Africa. This paper combines experiences of two UK-based NGOs dedicated to promoting smallholder agriculture and strengthening rural livelihoods in Africa with insights from academic literature on...
Tipo: Conference Paper or Presentation
Palavras-chave: International Development.
Ano: 2004
URL: http://purl.umn.edu/9516

The Growth of the Organic Market: Producers' Perspectives
Provedor de dados: 31
Autores: Edberg,   Kevin.
Tipo: Conference Paper or Presentation
Palavras-chave: Demand and Price Analysis.
Ano: 2004
URL: http://purl.umn.edu/33029

AGRICULTURAL GROWTH AGAINST A LAND RESOURCE CONSTRAINT: THE PHILIPPINE EXPERIENCE: COMMENT
Provedor de dados: 31
Autores: James,   William E.
Tipo: Journal Article
Palavras-chave: Land Economics/Use.
Ano: 1978
URL: http://purl.umn.edu/22728

On Turkey's European Trade Policy: How Desirable is a Status Quo
Provedor de dados: 31
Autores: Mercenier,   Jean; Yeldan,   A. Erinc.
Tipo: Conference Paper or Presentation
Palavras-chave: International Relations/Trade.
Ano: 1996
URL: http://purl.umn.edu/50865

O COMPLEXO AGROINDUSTRIAL DA SOJA NO BRASIL E NO PARANÁ: EXPORTAÇÕES E COMPETITIVIDADE NO PERÍODO 1990 A 2007
Provedor de dados: 31
Autores: Caldarelli,   Carlos Eduardo; Camara,   Marcia Regina Gabardo da; Sereia,   Vanderlei Jose.
This article analyzes the exportation of soy, and other derived products, in Brazil and in Paraná state, from 1990 to 2007. The methodological procedures consist of identification of the most representative products of the chain - the soy in grain, the soy bran and soy oil, and analysis of the results using the Constant Market-Share (CMS) model. The sources of the growth in exportations were divided into four components: the growth of world-wide commerce, definition of the exportation guideline, destination of the exported products and the competitiveness effects. In the period studied, the soy complex as a whole diversified its commercial partners due to a decrease in the concentration of the Brazilian and paranaense exportations. However, a concentration...
Tipo: Journal Article
Palavras-chave: Agro-industrial complex soy; International trade; Constant Market-share model (CMS); Competitiveness; Agribusiness; Agricultural Finance; Industrial Organization.
Ano: 2009
URL: http://purl.umn.edu/62150

Indonesian Agricultural Growth Leads to Increased Trade and Food Security
Provedor de dados: 31
Autores: Rada,   Nicholas E.
Tipo: Article
Palavras-chave: Food Consumption/Nutrition/Food Safety; International Relations/Trade.
Ano: 2010
URL: http://purl.umn.edu/121969

Endogenous Growth, Health and the Environment
Provedor de dados: 31
Autores: Mohtadi,   Hamid; Roe,   Terry L.
Tipo: Working or Discussion Paper
Palavras-chave: Environmental Economics and Policy; Health Economics and Policy; International Development.
Ano: 1992
URL: http://purl.umn.edu/7521

DISCUSSION:  EXTERNAL FINANCE: A NECESSARY COMPONENT IN GROWTH PROJECTIONS FOR SOUTHERN AGRICULTURE
Provedor de dados: 31
Autores: Melichar,   Emanuel.
Tipo: Journal Article
Palavras-chave: Agricultural Finance.
Ano: 1977
URL: http://purl.umn.edu/29277

EMPIRICAL TESTING OF A FARM FIRM GROWTH THEORY
Provedor de dados: 31
Autores: Rafeld,   Frederick J.; Shaudys,   Edgar T.
Tipo: Journal Article
Palavras-chave: Agricultural Finance.
Ano: 1970
URL: http://purl.umn.edu/29870

Chinese Apple Juice Export Growth Follows Investments in the Industry
Provedor de dados: 31
Autores: Gale,   H. Frederick, Jr.; Huang,   Sophia Wu.
Tipo: Article
Palavras-chave: Agribusiness; Crop Production/Industries.
Ano: 2011
URL: http://purl.umn.edu/121242

The productivity situation in Macedonian agriculture: Gainers and losers during the first decade of the 21st century
Provedor de dados: 31
Autores: Martinovska-Stojcheska,   Aleksandra; Surry,   Yves R.
This paper examines the production and productivity growth of Macedonian agriculture. Furthermore, having in mind the distinctive dual structure of Macedonian agriculture, this study investigates the differences in productivity surplus between family farms and agricultural companies. In the period from 1998 to 2008, the sector experienced an increase in terms of volume with an average annual rate of 0.8%, and a productivity or growth rate of 0.7% per annum. The partial productivity of the production factors generally increased throughout the whole period. The productivity growth mainly originated from the increase in agricultural output prices and was distributed to the input suppliers. Additionally, an important benefit was received by family labour with...
Tipo: Conference Paper or Presentation
Palavras-chave: Productivity gains; Surplus accounts; Macedonian agriculture; Farm Management; Productivity Analysis.
Ano: 2011
URL: http://purl.umn.edu/114667

Group versus Individual Liability: A Field Experiment in the Philippines
Provedor de dados: 31
Autores: Gine,   Xavier; Karlan,   Dean S.
Group liability is often portrayed as the key innovation that led to the explosion of the microcredit movement, which started with the Grameen Bank in the 1970s and continues on today with hundreds of institutions around the world.  Group lending claims to improve repayment rates and lower transaction costs when lending to the poor by providing incentives for peers to screen, monitor and enforce each other’s loans.  However, some argue that group liability creates excessive pressure and discourages good clients from borrowing, jeopardizing both growth and sustainability.  Therefore, it remains unclear whether group liability improves the lender’s overall profitability and the poor’s access to financial markets.  We worked with a bank in the Philippines to...
Tipo: Working or Discussion Paper
Palavras-chave: Financial Economics.
Ano: 2006
URL: http://purl.umn.edu/28413

TOTAL FACTOR PRODUCTIVITY AND THE BIO ECONOMY EFFECTS
Provedor de dados: 31
Autores: Zúniga-González,   Carlos Alberto.
Selected Paper prepared for presentation at the International Association of Agricultural Economists (IAAE) Triennial Conference, Foz do Iguaçu, Brazil, 18-24 August, 2012
Tipo: Presentation
Palavras-chave: Bio Economy Total Factor Productivity Growth; Malmquist Index; Data Envelopment Analysis; Bio-Economy; Bio-Ethanol; Productivity Analysis; D: 24; O: 13; O: 47; P: 51; Q: 10.
Ano: 2012
URL: http://purl.umn.edu/122939

ON KNOWLEDGE-BASED ECONOMIC GROWTH
Provedor de dados: 31
Autores: Tsur,   Yacov; Zemel,   Amos.
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 2002
URL: http://purl.umn.edu/14997

Decomposition of output growth in the Tunisian olive-growing sector: A frontier production function approach
Provedor de dados: 31
Autores: Dhehibi,   Boubaker; Lachaal,   Lassaad; Karray,   B.; Chebil,   Ali.
The aim of this paper is to investigate the relative contribution of technical efficiency, technological change and increased input use to the output growth of the Tunisian olive oil growing farms using a stochastic frontier production function approach applied to panel data for the period 1995- 1997. The proposed methodology is based on the use of a flexible translog functional form. Results indicate that technical efficiency of production in the sample of olive producing farms investigated ranges from a minimum of 24.8% to a maximum of 84.6% with an average technical efficiency estimate of 48.5%. This suggests that olive producers may increase their production by as much as 51.5% through more efficient use of production inputs. Further, the production is...
Tipo: Conference Paper or Presentation
Palavras-chave: Olive oil sector; Tunisia; Productivity; Crop Production/Industries; Demand and Price Analysis.
Ano: 2006
URL: http://purl.umn.edu/10037

GROWTH, SCARCITY AND R&amp;D
Provedor de dados: 31
Autores: Tsur,   Yacov; Zemel,   Amos.
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 2002
URL: http://purl.umn.edu/14994

U.S. Agriculture, 1960-96 A Multilateral Comparison of Total Factor Productivity
Provedor de dados: 31
Autores: Ball,   V. Eldon; Butault,   Jean-Pierre; Nehring,   Richard F.
This study provides estimates of the growth and relative levels of agricultural productivity for the 48 contiguous States for the period 1960 to 1996. For the full 1960-96 period, every State exhibits a positive and generally substantial average annual rate of productivity growth. There is considerable variance, however. The wide disparity in growth rates resulted in substantial changes in the ranking order of States by productivity. For each year, we calculate the coefficient of variation of productivity levels. We use these coefficients to show that the range of levels of productivity has narrowed over time, although the pattern of convergence was far from uniform. The fact that in some States, productivity grew faster than others and yet the...
Tipo: Report
Palavras-chave: Production accounts; Multilateral index numbers; Total factor productivity; Productivity Analysis.
Ano: 2001
URL: http://purl.umn.edu/33590

EDUCATION AND ECONOMIC GROWTH
Provedor de dados: 31
Autores: York,   E.T., Jr.
Tipo: Conference Paper or Presentation
Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 1963
URL: http://purl.umn.edu/17036

POLICIES TO MEET ACCELERATED GROWTH
Provedor de dados: 31
Autores: Heady,   Earl O.
Tipo: Conference Paper or Presentation
Palavras-chave: Agricultural and Food Policy.
Ano: 1961
URL: http://purl.umn.edu/17634

Decomposition of Total Factor Productivity Change in the U.S. Hog Industry, 1992-2004
Provedor de dados: 31
Autores: Key,   Nigel D.; McBride,   William D.; Mosheim,   Roberto.
There have been dramatic structural changes in the U.S. hog industry in the last two decades that have coincided with substantial increases in farm productivity.  This study used a stochastic frontier analysis to measure TFP growth between 1992 and 2004 and to decompose the TFP growth into four components: technical change and changes in technical efficiency, scale efficiency, and allocative efficiency.  The study finds that productivity gains in the twelve year study period are explained almost entirely by technical progress and by improvements in scale efficiency.  The study also disaggregates TFP growth in the Southeast and Heartland to better understand the implications of large spatial shifts in production.  Results indicate that regional differences...
Tipo: Conference Paper or Presentation
Palavras-chave: Livestock Production/Industries.
Ano: 2006
URL: http://purl.umn.edu/21323

Can Growth Compensate Inequality and Risk?---a welfare analysis for Chinese households
Provedor de dados: 31
Autores: Cao,   Heping; Ligon,   Ethan; Meng,   Xiangyi.
It has been widely observed that China’'s break-neck growth has not been equally shared between rural and urban areas, with urban households' enjoying a much larger proportion. To further test whether regional inequality exists within urban areas, we measure urban households’ vulnerability in a risky environment and decompose this measure to quantify China aggregate risks, province-level risks and idiosyncratic risks faced by households situated in 31 provinces. Besides, under this framework of analysis, we are able to make welfare comparisons between growth, inequality and different risks. We find that inequality has very big negative effect on households'’ welfare, while growth is able to compensate nearly half of it; households seem to be able to smooth...
Tipo: Conference Paper or Presentation
Palavras-chave: Community/Rural/Urban Development; Risk and Uncertainty.
Ano: 2006
URL: http://purl.umn.edu/21458

Outward-Orientation and Development: Are Revisionists Right?
Provedor de dados: 31
Autores: Srinivasan,   T.N.; Bhagwati,   Jagdish.
The costs of import substitution (IS) as a strategy for industrialization, which was deemed synonymous with economic development by many development economists of the fifties and sixties, were shown to be substantial in the influential and nuanced studies of the seventies and eighties under the auspices of OECD, NBER and World Bank. These studies played a critical role in shifting policies in several developing countries away from the IS strategy. Recently there has been a proliferation of cross country regressions as a methodology of analysis of issues relating to growth, trade and other issues. Both proponents (e.g. Sachs and Warner (1995)) and opponents (Rodriguez and Rodrik (1999)) of the view that openness to trade is linked to higher growth have...
Tipo: Working or Discussion Paper
Palavras-chave: Developing countries; Economic development; Economic growth; International trade; Openness; Import substitution; Export promotion; Cross-country regressions; International Development; E13; F11; F14; F43; 041; 057.
Ano: 1999
URL: http://purl.umn.edu/28476

Empirical Analysis of Agricultural Productivity: Growth in Benin and Mainly Factors which Influence Growth
Provedor de dados: 31
Autores: Constant,   Labintan Adeniyi.
This study examined changes in agricultural productivity at Benin in the context of diverse institutional arrangements using Data Envelopment Analysis (DEA).A time series data which consists of information on agricultural production and means of production were obtained from World Research Institute database, INSAE and rainfall data from AMMA database. The information was for a 43-year period (1961-2003); DEA method was used to measure Malquist index of total factor productivity to evaluate technical change efficiency and technological efficiency change across the country’s 12 provinces. A decomposition of TFP measures revealed whether the performance of factors productivity is due to technological change or technical efficiency change over the reference...
Tipo: Conference Paper or Presentation
Palavras-chave: Data Envelopment Analysis; Efficiency; Productivity; Benin; Agribusiness; N57; C01; C23.
Ano: 2011
URL: http://purl.umn.edu/100538

Revisiting the palm oil boom: An examination of consumption in the oils complex
Provedor de dados: 31
Autores: Sanders,   Daniel J.; Balagtas,   Joseph Valdes; Gruere,   Guillaume P.
The production, trade, and market share of palm oil has shown impressive growth in the last two decades. As a result of sustainability concerns over issues such as deforestation in Indonesia, the causes of the growth in the palm oil market have received considerable attention.  The growth of the biofuels market is one potential culprit that has been notably discussed, but it is not the only possible driver of growth in the palm oil market.  Restrictions on genetically-modified organisms may have played a role, especially as they relate to limits on oil produced from GMO soybeans.  Additionally, increasing concerns over health issues such as trans-fats may have spurred substitution to the low trans-fats palm oil.  This analysis details some of the changes...
Tipo: Conference Paper or Presentation
Palavras-chave: Palm oil; Biofuels; Edible oils; Consumption; Demand and Price Analysis.
Ano: 2011
URL: http://purl.umn.edu/103726

THE ENTRY-GROWTH-EXIT PROCESSES IN AGRICULTURE
Provedor de dados: 31
Autores: Boehlje,   Michael.
Tipo: Journal Article
Palavras-chave: Farm Management.
Ano: 1973
URL: http://purl.umn.edu/30409

Trade Induced Growth Impacts of Corporate Entry in the Food Sector: A Case Study of Fruits &amp; Vegetables Sub-Sector in the Punjab State of India
Provedor de dados: 31
Autores: Goel,   Veena.
Study indicated that the entry of corporate sector in the Punjab State is both in retail and wholesale trade of the fruits &amp; vegetables sub sector. At the organized retail stores these companies have provided its consumers a single window service for the various product assortments while within the fruits &amp; vegetables category (have minuscule scales) widened the product selection choices. Corporate entry in wholesale trade has linked several product specific production belts with medium to high income consumers through various market segments such as organized stores, traditional wholesale/retail markets and the food service. These companies have also provided product variety through imports while opportunities for crop diversification towards...
Tipo: Conference Paper or Presentation
Palavras-chave: Fruits &amp; vegetables trade; Corporate groups; Growth; Agribusiness.
Ano: 2011
URL: http://purl.umn.edu/115534

GROWTH, INEQUALITY, AND POVERTY  IN RURAL CHINA: THE ROLE OF PUBLIC INVESTMENTS
Provedor de dados: 31
Autores: Fan,   Shenggen; Zhang,   Linxiu; Zhang,   Xiaobo.
In the past two decades, China has achieved world renown for reducing rural poverty. However, it is becoming harder to reduce poverty and inequality further in China, even though its economy continues to grow. This report compares the impact specific rural public investments can have on promoting growth and reducing poverty and inequality. Returns to these investments are calculated for the nation as a whole and for three economic zones in the west, central, and coastal regions of the country. Government expenditures that have the highest impact on poverty and growth include education, agricultural research and development, and rural infrastructure (roads, electricity, and telecommunications). Notably, spending on irrigation and anti-poverty loans had...
Tipo: Report
Palavras-chave: Food Security and Poverty; International Development; Public Economics.
Ano: 2002
URL: http://purl.umn.edu/16523

ANALYZING ESTABLISHMENT GROWTH WITHIN NEW YORK FOOD MANUFACTURING INDUSTRIES FROM 1987 THROUGH 1995
Provedor de dados: 31
Autores: Ing,   Charmaine; Christy,   Ralph D.
Tipo: Journal Article
Palavras-chave: Agribusiness.
Ano: 1999
URL: http://purl.umn.edu/26795

Theme Overview: Local Food - Perceptions, Prospects, and Policies
Provedor de dados: 31
Autores: King,   Robert P.
Tipo: Journal Article
Palavras-chave: Local Food; Relocalization; Consumer Perception; Growth Prospects; Policy; Food Consumption/Nutrition/Food Safety.
Ano: 2010
URL: http://purl.umn.edu/93820

Structural Adjustment and Trade in Turkey: A General Equilibrium Analysis of the Export-Led Versus Domestic Demand-Led Strategies of Development
Provedor de dados: 31
Autores: Yeldan,   A. Erinc.
This paper attempts to assess the feasibility of the current strategy of manufactured export-led growth for Turkey over the Fifth and Sixth Five-Year Plan periods (1985-1994). The explicit hypothesis of the paper is that a domestic market, wage-goods oriented development strategy with agriculture leading the process will be more conducive to Turkey's long-term economic growth, as compared to an export-oriented strategy. The simulation experiments are conducted with the aid of a dynamic micro-planning model which belongs to a class of price-endogenous constructs known as Computable General Equilibrium (CGE) models. The model as applied to Turkey distinguishes seven economic sectors, four types of labor, three consumer groups, seven social classes, and a...
Tipo: Working or Discussion Paper
Palavras-chave: International Development; International Relations/Trade.
Ano: 1987
URL: http://purl.umn.edu/7464

MARKETING IN ECONOMIC DEVELOPMENT
Provedor de dados: 31
Autores: Delins,   Everton R.
The increase of the rate of growth in the underdeveloped areas of the world bears today outstanding interest for both developed and underdeveloped nations.  For developed societies, if only for an interest in the maintenance abroad of a leadership position, there are the needs for protection of the national investments overseas, for assurance of raw materials that may be needed, or for reflecting the increasing concern with development underway among underdeveloped nations.  In the underdeveloped countries in general, where today about two thirds of the world population live, there is a widespread awareness that their economies are not keeping pace with the more developed nations, a great desire to speed up the growth of the various sectors of the national...
Tipo: Thesis or Dissertation
Palavras-chave: International Development; Marketing.
Ano: 1970
URL: http://purl.umn.edu/11260

Estimating the effects of aggregate agricultural growth on the distribution of expenditures
Provedor de dados: 31
Autores: Ligon,   Ethan; Sadoulet,   Elisabeth.
Tipo: Working Paper
Palavras-chave: International Development.
Ano: 2011
URL: http://purl.umn.edu/120420

DISTRIBUTION, GROWTH AND PERFORMANCE OF MICROFINANCE INSTITUTIONS IN AFRICA, ASIA, AND LATIN AMERICA
Provedor de dados: 31
Autores: Lapenu,   Cecile; Zeller,   Manfred.
Tipo: Report
Palavras-chave: Financial Economics.
Ano: 2001
URL: http://purl.umn.edu/15965

Is War Necessary for Economic Growth? Military Procurement and Technology Development
Provedor de dados: 31
Autores: Ruttan,   Vernon W.
New radical general purpose technologies have been the drivers of economic growth in the United States economy in recent economic history. In this paper I review the role of military and defense related research, technology development, and procurement in the development of the aircraft, nuclear power, computer, semiconductor, internet and the space communication and earth observing industries. The development of each of these industries would have been substantially delayed in the absence of support for research, technology development and procurement by the military and defense related agencies. Rates of productivity and output growth would have been substantially slower. By the early 1990's it was becoming clear that changes in the United States...
Tipo: Working or Discussion Paper
Palavras-chave: International Development; Research and Development/Tech Change/Emerging Technologies.
Ano: 2006
URL: http://purl.umn.edu/13534

Agriculture for development: New paradigm and options for success
Provedor de dados: 31
Autores: de Janvry,   Alain.
In the classical paradigm of development economics that prevailed in the 1960s, agricultural growth was held to be the key pillar for industrial growth, itself seen to be synonymous with economic development. The paradigm was anchored in telling success stories, from the long history of the “Western Experience” to the then-recent “Asian miracles”. And it was supported by rigorous modeling exercises. But, in spite of success stories, implementation of this paradigm was running into increasing difficulty in the 1970s and early 1980s as policy favored import substitution industrialization with strong anti-agriculture price policy biases. Integrated rural development strategies, designed to meet the broadened development objectives introduced in the 1970s that...
Tipo: Conference Paper or Presentation
Palavras-chave: International Development.
Ano: 2009
URL: http://purl.umn.edu/53202

SUITABLE ENVIRONMENT FOR ECONOMIC GROWTH
Provedor de dados: 31
Autores: Brownlee,   O.H.
Tipo: Conference Paper or Presentation
Palavras-chave: Agricultural and Food Policy.
Ano: 1955
URL: http://purl.umn.edu/17442

Effective Labor Regulation and Microeconomic Flexibility
Provedor de dados: 31
Autores: Caballero,   Ricardo J.; Cowan,   Devin N.; Engel,   Eduardo M.R.A.; Micco,   Alejandro.
Microeconomic flexibility, by facilitating the process of creative-destruction, is at the core of economic growth in modern market economies. The main reason for why this process is not infinitely fast is the presence of adjustment costs, some of them technological, others institutional. Chief among the latter is labor market regulation. While few economists would object to such a view, its empirical support is rather weak. In this paper we revisit this hypothesis and find strong evidence for it. We use a new sectoral panel for 60 countries and a methodology suitable for such a panel. We find that job security regulation clearly hampers the creative-destruction process, especially in countries where regulations are likely to be enforced. Moving from the...
Tipo: Working or Discussion Paper
Palavras-chave: Microeconomic rigidities; Creative-destruction; Job security regulation; Adjustment costs; Rule of law; Productivity growth; Labor and Human Capital; E24; J23; J63; J64; K00.
Ano: 2004
URL: http://purl.umn.edu/28486

AN ANALYSIS OF NONMETROPOLITAN GROWTH IN MINNESOTA
Provedor de dados: 31
Autores: Dorf,   Ronald J.; Hoppe,   Robert A.
Tipo: Working or Discussion Paper
Palavras-chave: Community/Rural/Urban Development.
Ano: 1976
URL: http://purl.umn.edu/13492

Agricultural R&amp;D and Economic Growth
Provedor de dados: 31
Autores: Dinopoulos,   Elias.
The paper develops a dynamic general-equilibrium model of Schumpeterian growth which is fueled by industrial and agricultural R&amp;D. The former is private and results in better production processes, whereas the latter is government-financed (public and applied) R&amp;D and generates better crop varieties. The arrival of innovations in either sector is stochastic. The model is used to calculate the steady-state equilibrium and the growth-maximizing mix of agricultural and industrial R&amp;D investments. It is also used to highlight the properties of social rates of return (ROR) of R&amp;D which are based on partial-equilibrium calculations. These measures overestimate the true agricultural social ROR and underestimate the true industrial social ROR of...
Tipo: Report
Palavras-chave: Food security; Food policy; Research and development; Economic growth; International Development; Research and Development/Tech Change/Emerging Technologies; Downloads July 2008 - June 2009: 14; Q16.
Ano: 1996
URL: http://purl.umn.edu/54690

POPULATION AND THE ENVIRONMENT: FRAMEWORKS FOR ANALYSIS
Provedor de dados: 31
Autores: Ness,   Gayl D.
This working paper is one of a series the EPAT/MUCIA Population and Environmental and Natural Resources team is producing.  It examines major ways of thinking about the population-environment relationship over the past two centuries.  The paper begins with Malthus and reviews developments to the present.  Then it examines in detail six current frameworks or models for analyzing population-environment relationships.  The six models include Bongaarts', Clark's, and Harrison's attempts to identify the relative impact of population growth on a limited number of forms of environmental degradation.  It also examines the more complex Meadows, Meadows, and Randers WORLD3 dynamic model of the global system and International Institute of Applied Systems Analysis...
Tipo: Working or Discussion Paper
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 1994
URL: http://purl.umn.edu/11884

Cointegration Analysis on the Relation between Urbanization and Economic Growth in China
Provedor de dados: 31
Autores: Liu,   Ai-ying; Yao,   Li-fen; Li,   Qing-chen.
This paper utilizes cointegration theory, error correcting model and Granger causality testing theory to make an empirical research on the relation between urbanization and GDP in China, and also implements a comparative analysis to the relation between three industries and degree of urbanization, the related coeffecient is 0.97, 0.95, 0.97, 0.97. And the result shows a long-term balance between these two factors, and the promoting effect to tertiary industry by urbanization is more obvious. Urbanization and economic growth are the long-term balanced relations. In the long-term balance, every 1% increment of urbanization can make 4.82% increment of GDP; In short-term balance, if the balance depart from the long-term balance at the i-th term, the model will...
Tipo: Journal Article
Palavras-chave: Economic growth; Urbanization; Cointegration test; Error correction model; China; Agribusiness.
Ano: 2011
URL: http://purl.umn.edu/113441

Effects of Clean Water Act Regulations on Firm-Level Decisions in Agriculture
Provedor de dados: 31
Autores: Sneeringer,   Stacy E.; Key,   Nigel D.
U.S. environmental regulations often vary by the size of the operation, with larger operations facing more regulatory stringency.  When the size distribution of firms is heavily skewed, regulation size thresholds can reduce transaction costs for regulatory agencies while bringing most production within a regulatory framework.  However, size-based regulation may have unintended consequences if operations downsize, slow their growth, or enter at a smaller size in order to avoid regulation.  These unintended consequences from regulation may include less pollution abatement and diminished economic efficiency.  In this study we examine recently revised Clean Water Act (CWA) regulations targeting large-scale livestock operations to identify and quantify farm...
Tipo: Conference Paper or Presentation
Palavras-chave: Livestock; Clean Water Act; Growth; Regulation; Agricultural and Food Policy; Environmental Economics and Policy; Farm Management; Q5.
Ano: 2010
URL: http://purl.umn.edu/61461

Targeting Growth Opportunities for Lancaster County, 2002
Provedor de dados: 31
Autores: Barkley,   David L.; Henry,   Mark S.; Warner,   Mellie L.
Tipo: Report
Palavras-chave: Community/Rural/Urban Development.
Ano: 2002
URL: http://purl.umn.edu/113333

AGRICULTURAL GROWTH AS A KEY TO POVERTY ALLEVIATION
Provedor de dados: 31
Autores: Brown,   Lynn R.; Haddad,   Lawrence James.
Tipo: Working or Discussion Paper
Palavras-chave: Food Security and Poverty; International Development.
Ano: 1994
URL: http://purl.umn.edu/16352

Tiger or turtle?: exploring alternative futures for Egypt to 2020
Provedor de dados: 31
Autores: Lofgren,   Hans; Robinson,   Sherman; Nygaard,   David F.
Includes bibliographical references (p. 20-22). In association with the Economic Research Forum for the Arab Countries, Iran and Turkey. Published, in 1998, in Raed Safadi, ed. Opening doors to the world: a new trade agenda for the Middle East. pp. 167-197. (Chapter 5).
Tipo: Working or Discussion Paper
Palavras-chave: Equilibrium (Economics) -- Egypt; Agriculture -- Economic aspects -- Egypt; Water-supply; Agricultural -- Egypt; Computable general equilibrium (CGE); International Development.
Ano: 1996
URL: http://purl.umn.edu/97765

Beyond Agriculture? The Promise of the Rural Economy for Growth and Poverty Reduction
Provedor de dados: 31
Autores: Anriquez,   Gustavo.
Tipo: Journal Article
Palavras-chave: Community/Rural/Urban Development; Food Security and Poverty; International Development.
Ano: 2007
URL: http://purl.umn.edu/112590

AN ECONOMETRIC MODEL OF MANUFACTURING EMPLOYMENT GROWTH IN RURAL TENNESSEE COUNTIES FROM 1962 TO 1976
Provedor de dados: 31
Autores: Leuck,   Dale J.
Tipo: Journal Article
Palavras-chave: Labor and Human Capital.
Ano: 1979
URL: http://purl.umn.edu/30037

The Effects of Class Size on the Long Run Growth in Reading Abilities and Early Adult Outcomes in the Christchurch Health and Development Study
Provedor de dados: 31
Autores: Boozer,   Michael A.; Maloney,   Tim.
This paper utilizes the feature of the CHDS data from New Zealand that children are sampled for extremely long individual histories of their class size experiences as well as their scholastic and early labor market outcomes. Our interest is to explore the full set of empirical implications of the recent experimental evidence on class size effects on student achievement from the United States in Project STAR for observational data. We argue that one implication of Project STAR is that only persistent class size reduction policies may have detectable effects, and so the longitudinal aspect of CHDS is necessary to detect class size effects. We account for the observational nature of the CHDS (in that children were not randomly assigned to different class...
Tipo: Working or Discussion Paper
Palavras-chave: School quality; Value-added model; Experimental evidence; Labor and Human Capital; C51; C81; I21; C23.
Ano: 2001
URL: http://purl.umn.edu/28384

Fiscal policy consistency and its implications for macroeconomic aggregates: The case of Uganda
Provedor de dados: 31
Autores: Hisali,   Eria.
The relationship between growth in monetary aggregates and price changes continues to be a subject of considerable debate both in the academic and policy circles. Whereas the more ‘conservative’ policy makers hold that growth in monetary aggregates bear proportionately on prices, ‘liberals’ on the other hand suggest a fairly weak relationship and instead mainly attribute sustained price changes to other innovations (including structural weaknesses and poor productive capacity). This study employed vector autoregression techniques (and its variants) to examine both short term as well as long term interactions between selected macroeconomic aggregates with particular focus on the relationship between money growth and price changes. Results from both the...
Tipo: Report
Palavras-chave: Fiscal stance; Macroeconomic aggregates; Structural vector autogression; Budget accounting approach; Agribusiness; Agricultural Finance; Financial Economics; Institutional and Behavioral Economics; Public Economics; H62; H63; H69.
Ano: 2010
URL: http://purl.umn.edu/113615

Effects of the rural credit subsidy on economic growth and welfare of Brazilian regions
Provedor de dados: 31
Autores: Cardoso,   Debora Freire; Teixeira,   Erly Cardoso; Gurgel,   Angelo Costa; Castro,   Eduardo Rodrigues de.
The objective of this paper is to evaluate the impact of government spending with the Interest Rates Equalization (IRE) policy on the economic growth of Brazilian regions. Additionally, it aims to measure the opportunity cost of the subsidy in relation to an alternative application in the transportation sector. The model, database, and software from the General Equilibrium Analysis Project of the Brazilian Economy (PAEG) are applied to the simulations. The result shows that the IRE policy provides economic growth in the Midwestern, Northeastern and Southern regions above the cost of the policy. Besides, in the Northern and Southeastern regions, there is a decrease in the GDP. For Brazil, the policy is cost-effective and offers a 34% rate of return....
Tipo: Working or Discussion Paper
Palavras-chave: Subsidies; Economic growth; Brazilian regions; PAEG; Agricultural and Food Policy.
Ano: 2011
URL: http://purl.umn.edu/114464

ACTUAL VERSUS POTENTIAL GROWTH OF A FARM FIRM: AN EX POST ANALYSIS
Provedor de dados: 31
Autores: Humberd,   D. Ray.
Tipo: Journal Article
Palavras-chave: Farm Management.
Ano: 1971
URL: http://purl.umn.edu/30499

SOURCES OF AGRICULTURAL GROWTH IN JAPAN, 1880-1965
Provedor de dados: 31
Autores: Akino,   Masakatsu; Hayami,   Yujiro.
Tipo: Working or Discussion Paper
Palavras-chave: International Development.
Ano: 1973
URL: http://purl.umn.edu/13486

Trends in Kenyan Agricultural Productivity: 1997-2007
Provedor de dados: 31
Autores: Kibaara,   Betty; Ariga,   Joshua; Olwande,   John; Jayne,   Thomas S.
Egerton University Tegemeo Institute of Agricultural Policy and Development
Tipo: Working or Discussion Paper
Palavras-chave: Africa; Kenya; Productivity; Productivity Analysis; Q10.
Ano: 2008
URL: http://purl.umn.edu/56117

Transitions Out of Poverty: Drivers of Real Income Growth for the Poor in Rural Pakistan
Provedor de dados: 31
Autores: Dorosh,   Paul A.; Malik,   Sohail J.
In spite of rapid overall economic growth in the 1990s, rural poverty in Pakistan did not decline. Panel data covering rural households in four districts in Pakistan suggest that real incomes of many households declined between the early 1990s and 2002, in spite of modest gains in agricultural output at the provincial and national levels. Net crop income increased by 38 percent for the total sample and by 81 percent growth for poor farmers, whose total incomes rose by 23 percent. Nevertheless, rural non-agricultural incomes fell by 30 percent overall and by 16 percent for poor households, indicating that the income and employment multipliers of agricultural growth were insufficient to lead to substantial gains in rural non-farm incomes. A decline in...
Tipo: Conference Paper or Presentation
Palavras-chave: Rural Development; Poverty; South Asia; Food Security and Poverty; I3; O18; O2.
Ano: 2006
URL: http://purl.umn.edu/25387

Productivity Growth, Technical Progress and Efficiency Change in the Caribbean: Key Ingredients for "International Competitiveness"
Provedor de dados: 31
Autores: Roberts,   Sharon D.; Langham,   Max R.
Tipo: Journal Article
Palavras-chave: International Competitiveness for the Caribbean; Productivity Analysis.
Ano: 2001
URL: http://purl.umn.edu/45704

Targeting Growth Opportunities for Florence County, 2006
Provedor de dados: 31
Autores: Barkley,   David L.; Henry,   Mark S.; Dudensing,   Rebekka M.
Tipo: Report
Palavras-chave: Community/Rural/Urban Development.
Ano: 2006
URL: http://purl.umn.edu/113808

Productivity Growth and the Returns from Public Investment in R&amp;D in Australian Broadacre Agriculture
Provedor de dados: 31
Autores: Mullen,   John D.
Investment in R&amp;D has long been regarded as an important source of productivity growth in Australian agriculture. Perhaps because research lags are long, current investment in R&amp;D is monitored closely. Investment in R&amp;D has been flat while productivity growth has remained strong, relative both to other sectors of the Australian economy and to the agricultural sectors of other countries. Such productivity growth, at a time when the decline in terms of trade facing Australian farmers has slowed, may have enhanced the competitiveness of Australian agriculture. The econometric results presented here suggest no evidence of a decline in the returns from research from the 15- 40 percent per annum range estimated by Mullen and Cox. In fact the marginal...
Tipo: Conference Paper or Presentation
Palavras-chave: Productivity; Research and development; Research evaluation; Productivity Analysis.
Ano: 2007
URL: http://purl.umn.edu/9451

Identifying Growth and Diversification Relationship in Washington Agriculture
Provedor de dados: 31
Autores: Skolrud,   Tristan D.; O'Donoghue,   Erik J.; Shumway,   C. Richard; Melhim,   Almuhanad.
Tipo: Journal Article
Palavras-chave: Agricultural and Food Policy; Q12.
Ano: 2009
URL: http://purl.umn.edu/94702

A two-stage productivity analysis using bootstrapped Malmquist index and quantile regression
Provedor de dados: 31
Autores: Kaditi,   Eleni A.; Nitsi,   Elisavet I.
This paper examines the effects of farm characteristics and government policies in enhancing productivity growth for a sample of Greek farms, using a two-stage procedure. In the 1st-stage, non-parametric estimates of Malmquist index and its decompositions are computed, while a bootstrapping procedure is applied to provide their statistical precision. In the 2nd-stage, the productivity growth estimates are regressed on various covariates using a bootstrapped quantile regression approach. The effect that the covariates exert on productivity growth of the average producer is analyzed, as well as the marginal effect of a given covariate for individuals at different points in the conditional productivity distribution. The results indicate that there exists...
Tipo: Conference Paper or Presentation
Palavras-chave: Malmquist productivity index; Quantile regression; Bootstrap; Research Methods/ Statistical Methods; C14; C21; D24.
Ano: 2009
URL: http://purl.umn.edu/52845

EXTERNAL FINANCE: A NECESSARY COMPONENT IN GROWTH PROJECTIONS FOR SOUTHERN AGRICULTURE
Provedor de dados: 31
Autores: Penson,   John B., Jr.
Tipo: Journal Article
Palavras-chave: Agricultural Finance.
Ano: 1977
URL: http://purl.umn.edu/29301

A decomposition of China's productivity through calibration of an endogenous growth model
Provedor de dados: 31
Autores: Luckstead,   Jeff; Choi,   Seung Mo; Devadoss,   Stephen; Mittelhammer,   Ronald C.
Tipo: Conference Paper or Presentation
Palavras-chave: China; IST; Human capital; International Development; O30.
Ano: 2011
URL: http://purl.umn.edu/103072

Sinningia allagophylla(Gesneriaceae): in vitro cultivation of a native plant of the Brazilian cerrado
Provedor de dados: 88
Autores: ALMEIDA,VILMA PALAZETTI DE; SHEPHERD,SIMONE LILIANE KIRSZENZAFT.
We used axillary buds as initial explants for hormone interaction studies required for in vitro cultivation of S. allagophylla. Callus production was achieved on gelled Murashige &amp;amp; Skoog medium (MS) supplemented with indole-3-acetic acid (IAA= 0.1 and 0.5 mg.l­1 alone or combined with 6 benzylaminopurine) (BA= 0.01 and 0.1 mg.l-1). A hormone balance between IAA and BA that would encourage shoot bud development was not found. Nodal segments from axenic cultures grown in the presence of cytokinin (0.1 mg.1­1 of BA) without any auxin on MS medium with half-strength macronutrients were used as a standard explant source for subsequent experiments on optimum mineral culture media composition for S. allagophylla in vitro cultivation. We found that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerrado; Plant tissue culture; Growth regulators; Nitrogen levels.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041999000300005

Tree population and community dynamics in a Brazilian tropical semideciduous forest
Provedor de dados: 88
Autores: Appolinário,Vivette; Oliveira Filho,Ary T.; Guilherme,Frederico A.G.
The dynamics of the tree community and 30 tree populations were examined in an area of tropical semideciduous forest located on the margin of the Rio Grande, SE Brazil, based on surveys done in 1990 and 1997 in three 0.18 ha plots. The main purpose was to assess whether variations in dynamics were related to topography and the effects of a catastrophic flood in 1992. Rates of mortality and recruitment of trees and gain and loss of basal area in two topographic sites, lower (flooded) and upper (non-flooded), were obtained. Projected trajectories of mean and accelerated growth in diameter were obtained for each species. In both topographic sites, mortality rates surpassed recruitment rates, gain rates of basal area surpassed loss rates, and size...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Forest dynamics; Tree community dynamics; Tree growth; Tree population dynamics; Tropical semideciduous forest.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042005000200014

Growth and leaf demography of two Cecropia species
Provedor de dados: 88
Autores: SANTOS,FLAVIO A.M.
Allometry, growth and leaf demography of two Cecropia species, one with ant mutualist (C. glazioui) and another without it (C. hololeuca), were studied in an Atlantic Rain Forest area in the State of Rio de Janeiro, SE Brazil. Stem diameter was allometrically related to height in both species. Cecropia glazioui showed higher annual growth rates and longer internodes than C. hololeuca. Leaf phenology showed a seasonal pattern in both species, but the number of leaves on each plant was more variable along the year in C. hololeuca than in C. glazioui. Survivorship curves for leaves were intermediate between Deevey's Type I and Type II curves, with young leaves of C. glazioui showing a greater survival rate and life expectancy than those of C. hololeuca. Low...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometry; Atlantic Rain Forest; Cecropia; Growth; Leaf demography.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042000000200003

Germination and morphological characterization of the fruits, seeds, and seedlings of Pilosocereus gounellei
Provedor de dados: 88
Autores: Abud,Haynna Fernandes; Gonçalves,Nayara Roberto; Pereira,Magnum de Sousa; Pereira,Diego de Sousa; Reis,Rodrigo de Góes Esperon; Bezerra,Antonio Marcos Esmeraldo.
The present work examined the germination and morphology of the fruits and seeds of the cactus Pilosocereus gounellei (xique-xique) and describeb the different stages of seedling growth. Germination tests examined the effects of combinations of two illumination regimes (a 12 hour photoperiod and total darkness) and three temperature regimes (25, 30, and 20-30 ºC) on the seeds of this species. Germination counts were made daily until the 16th day after sowing and the germination percentage and velocity index, and average germination time were evaluated. Descriptions of seed morphology considered both their external and internal aspects. The processes of germination and seedling growth were evaluated during 150 days and eight developmental stages were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cactaceae; Morphology; Seedling growth.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042012000100003

Monostromatic green algae (Ulvales, Chlorophyta) of São Paulo and Paraná states (Brazil): distribution, growth, and reproduction
Provedor de dados: 88
Autores: Braga,Maria do Rosário de A.; Fujii,Mutue T.; Cordeiro-Marino,Marilza.
(Monostromatic green algae (Ulvales, Chlorophyta) of São Paulo and Paraná states (Brazil): distribution, growth, and reproduction). Culture studies were used for taxa identification and to understand aspects of the biology and physiology of monostromatic green blades growing in various sites along the coast of São Paulo state (23º30'-25ºl2'S, 45º10'-48ºW) and one site in Paraná state (25º35'S, 48º21'W), southeast and south Brazil, respectively. Possible variations of the growth rate, age of reproduction and life history were tested under different conditions of temperature, salinity and day length. Two species were found: Ulvaria oxysperma (Kützing) Bliding and Monostroma sp. The first one has been previously reported for many temperate and tropical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ulvaria; Monostroma; Growth rate; Reproduction.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041997000200010

The Effect of Early Post Hatch Feeding Times on the Growth and Development of the Gastrointestinal Tract of Mule Ducklings to Five Days of Age
Provedor de dados: 89
Autores: Williams,MA; Lallo,CHO; Sundaram,V.
ABSTRACT The present study evaluated the effects of early post-hatch feeding on the growth and development of the gastrointestinal tract (GIT) of mule ducks reared in the humid tropics to five days of age. A total of 120 newly hatched mule ducklings were selected and randomly assigned to four treatment groups. Each with 30 birds, (T1, T2, T3, and T4) is based on four feeding regimes (feed accessed at 3, 24, 36, and 48 hours post-hatch) for five days. The ducklings were euthanized each day and the parameters: small intestinal samples were processed for histological analysis and histometrical parameters including villi length and width, crypt width and depth, and the number of goblet cells per villus was measured, statistically analyzed using ANOVA and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Post hatch feed times; Growth and development; Small intestine; Gastrointestinal tract; Mule ducklings.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000100311

The role of poultry industry in indian economy
Provedor de dados: 89
Autores: Vetrivel,SC; Chandrakumarmangalam,S.
Poultry farming in India, in spite of several constraints, has progressed considerably during the last decade. The present study has been undertaken to examine various aspects related to the growth and development of poultry production in the country. Poultry production in India was confined to backyards till recently. Local breed of birds were reared for the supply of eggs and meat. The increasing demand for poultry products necessitates augmenting the supply by importing improved breeds of poultry. In 1961, the proportion of hybrid populations in the total population of poultry was about 2 percent. Within a couple of decades, these birds have dominated the market sidelining the indigenous birds. The technological advances have revolutionized the role and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eggs; Supply; Production; Technology; Growth; Population.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000400001

Analyzing Growth Curves of Turkeys Reared in Different Breeding Systems (Intensive and Free-Range) with some Nonlinear Models
Provedor de dados: 89
Autores: Sogut,B; Celik,S; Ayasan,T; Inci,H.
ABSTRACT The objective of this study was to identify the growth curve of live weight of turkeys reared in different systems (intensive and free- range) with the best mathematical model. To achieve this goal, the live weight of male and female turkeys (Large White) reared for 0-18 weeks were used. Logistic, Gompertz, Von Bertalanffy, and Gauss were used to determine the best model for the turkeys. In comparison of the models, values of Coefficient of Determination (R2), Mean Squares of Error (MSE) and Model Efficiency (ME) were used. In Von Bertalanffy model, the coefficient of determinations for males and females were found as 0.9974 and 0.99915 in intensive system and 0.9794 and 0.9804 in Free-Range system, respectively. As a result of this study, because...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breeding system; Growth models; Large white turkey; Live weight.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400619

Productive traits of broiler chickens fed diets containing different growth promoters
Provedor de dados: 89
Autores: Pelicano,ERL; Souza,PA de; Souza,HBA de; Leonel,FR; Zeola,NMBL; Boiago,MM.
This study evaluated the effect of different probiotics and prebiotics on the performance of broilers. One-day-old male broiler chicks from the Cobb strain (n=1,260) were randomly distributed in a 3 x 3 factorial arrangement, considering 3 probiotics and 3 prebiotics sources. Nine treatments with 4 repetitions and 35 birds per parcel were used. The results showed that there was no influence of treatment on feed intake at the different rearing phases. Better weight gain (p&lt;0.05) was seen when diet was supplemented with the phosphorylated mannanoligosaccharide-based prebiotic (MOS) compared to diets without prebiotics. Feed conversion of birds fed diets with probiotics and prebiotics was better than feed conversion of birds not receiving such additives....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chickens; Performance; Prebiotics; Probiotics.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000300008

Performance, Growth Curves and Carcass Yield of Four Strains of Broiler Chicken
Provedor de dados: 89
Autores: Nogueira,BRF; Reis,MP; Carvalho,AC; Mendoza,EAC; Oliveira,BL; Silva,VA; Bertechini,AG.
ABSTRACT The objective of this study was to evaluate the performance, carcass yield and growth curves of different commercial strains of broiler chicken. 2400 day-old chicks, males and females of the Cobb500, RossAp95, Hubbard Flex and a new Francesa line were used. The birds were distributed in a completely randomized design in a factorial arrangement 4x2 (line x sex), forming eight treatments with 10 replicates each. The birds were fed with the same diet. Feed intake, weight gain and feed conversion were determined. At 42 days, it was determined at the request of carcass and cuts of each lineage. The Gompertz model was applied to a growth curve for each line. The RossAP95 line shows the best performance results. Growth curves showed lower sexual...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chicken genetics; Gompertz; Viscera yield.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400309

Growth Performance and Fatty Acid Profiles of Ducks Fed a Diet Supplemented with Aronia (Aronia Melanocarpa) Powder
Provedor de dados: 89
Autores: Lee,GD; Shin,JH; Choi,IH.
ABSTRACT The present study evaluated the effects of aronia powder on growth performance and fatty acid profiles of ducks. A total of 90 ducks (one-day-old pekin, 48 males and 42 females) were distributed according to a completely randomized design into two treatments (control and 1% aronia powder) with 3 replicates of 15 birds per pen for 42 d. Apart from the feed:gain ratio, the other growth performance parameters, including initial body weight, final body weight, weight gain, and feed intake, did not differ significantly between treatments (p&gt;0.05). In addition, there was no significant difference (p&gt;0.05) in fatty acid profiles between treatments. However, oleic acid (C18:1), linoleic acid (C18:2), and polyunsaturated fatty acid (PUFA) were...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Aronia powder; Growth performance; Fatty acid profiles.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200193

Growth Performance and Fatty Acid Profiles of Broilers Given Diets Supplemented with Fermented Red Ginseng Marc Powder Combined with Red Koji
Provedor de dados: 89
Autores: Chung,TH; Choi,IH.
ABSTRACT In this study, 240 one-d-old Arbor Acres broiler chicks (160 males and 80 females) were randomly allocated in a completely randomized design with four treatments and four replicates. Broilers were fed from hatching to 28 d of age four diets: a basal diet (control), 2% red ginseng marc, 1% fermented red ginseng marc with red koji, and 2% liquid red ginseng. Growth performance and fatty acid profiles in broiler were evaluated. Supplementing diets with different types of red ginseng did have significant effects (p&lt;0.05) on initial body weight, due to differences in the birth weights of birds, including weight gain, and mortality. However, no significant differences between the treatments (p&gt;0.05) were found for final body weight, feed intake,...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Fermented red ginseng marc powder; Red koji; Red ginseng marc; Growth performance; Fatty acid.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400733

Bayesian Analysis for the Comparison of Nonlinear Regression Model Parameters: an Application to the Growth of Japanese Quail
Provedor de dados: 89
Autores: Firat,MZ; Karaman,E; Başar,EK; Narinc,D.
ABSTRACT This paper discusses the Bayesian approach as an alternative to the classical analysis of nonlinear models for growth curve data in Japanese quail. A Bayesian nonlinear modeling method is introduced and compared with the classical nonlinear least squares (NLS) method using three non-linear models that are widely used in modeling the growth data of poultry. The Gompertz, Richards and Logistic models were fitted to 499 Japanese quail weekly averaged body weight data. Normal prior was assumed for all growth curve parameters of the models with assuming Jeffreys' non-informative prior for residual variances. Models were compared based on the Bayesian measure of fit, deviance information criterion (DIC), and our results indicated the better fit of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gompertz; Logistic; Richards; Non-linear; Bayesian.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000500019

An alternative for antibiotic se in poultry: probiotics
Provedor de dados: 89
Autores: Edens,FW.
Over the past 50 years, there has been increasing amounts of antibiotics used prophylactically and as growth promoters. Today, there is a consumer and governmental outcry to eliminate that practice from poultry and livestock production. Evidence has been accumulated to show that there is a link between risk of zoonotic disease and growth promoting antibiotic usage in livestock and poultry. Therefore, alternatives to the use of growth promoting antibiotics must be found to promote growth or production at or near the genetic potential of the modern day broiler, turkey, and egg producer. The use of probiotics has many potential benefits and include modified host metabolism, immuno-stimulation, anti-inflammatory reactions, exclusion and killing of pathogens in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibiotics; Antibiotic resistance; Benefits; Characteristics; Chickens; Defined culture; Functions; History; Human health risk; Mechanism of action; Probiotics; Turkeys; Undefined culture; Zoonotic disease.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000200001

Effects of Acidified Yeast and Whey Powder on Performance, Organ Weights, Intestinal Microflora, and Gut Morphology of Male Broilers
Provedor de dados: 89
Autores: Kermanshahi,H; Heravi,RM; Attar,A; Pour,AR Abbasi; Bayat,E; Zadeh,M Hossein; Daneshmand,A; Ibrahim,SA.
ABSTRACT In the present study, we investigated the effects of acidified dried whey and acidified yeast product and their combination on broiler growth characteristics, intestinal microflora and gut morphology. Seven hundred and fifty day-old Ross 308 male broilers were fed one of 10 dietary treatments with 5 replicates in a randomized design. A corn-soybean meal based diet (control group) was supplemented with 3 levels (0.15, 0.30 and 0.45%) of acidified whey powder (AW), acidified yeast product (AY), and acidified whey powder and yeast product (AWY). Acidified yeast product improved ADG and FCR at d 42, but the effects of additives on productive performance were not significant across the entire rearing period. The highest level of AY increased the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Microbial population; Yeast product; Gut morphology; Growth performance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200309

Root growth of tomato seedlings intensified by humic substances from peat bogs
Provedor de dados: 90
Autores: Silva,Alexandre Christofaro; Canellas,Luciano Pasqualoto; Olivares,Fábio Lopes; Dobbss,Leonardo Barros; Aguiar,Natalia Oliveira; Frade,Daniele Ângela Rossinol; Rezende,Carlos Eduardo; Peres,Lázaro Eustáquio Pereira.
Peats are an important reserve of humified carbon in terrestrial ecosystems. The interest in the use of humic substances as plant growth promoters is continuously increasing. The objective of this study was to evaluate the bioactivity of alkaline soluble humic substances (HS), humic (HA) and fulvic acids (FA) isolated from peats with different decomposition stages of organic matter (sapric, fibric and hemic) in the Serra do Espinhaço Meridional, state of Minas Gerais. Dose-response curves were established for the number of lateral roots growing from the main plant axis of tomato seedlings. The bioactivity of HA was greatest (highest response in lateral roots at lowest concentration) while FA did not intensify root growth. Both HS and HA stimulated root...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Physiological effects; Bioactivity.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000500015

Orchid growth and nutrition in response to mineral and organic fertilizers
Provedor de dados: 90
Autores: Rodrigues,Donizetti Tomaz; Novais,Roberto Ferreira; Alvarez V.,Víctor Hugo; Dias,José Maria Moreira; Villani,Ecila Mercês de Albuquerque.
Orchid fertilization is fundamental for a satisfactory plant growth and development for commercial orchid production as well as in collections. Mineral and/or organic sources can be used for fertilization. The objective of this study was to evaluate the effect of the use of organic and/or mineral fertilizers on the nutrition and growth of orchid (Laelia purpurata 'werkhanserii' x L. lobata 'Jeni') seedlings in greenhouse. The following fertilizers were tested: an NPK fertilizer + micronutrients; a Ca source in the form of calcium nitrate; two organic fertilizers, one prepared with a mixture of bone meal, castor meal and ash, and a similar commercial fertilizer. The organic fertilizers were distributed on the surface of the pots every two months and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Orchidaceae; Fertilizer; B toxicity; Bone meal; Castor meal; Ash.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000500014

Tree Growth and Nutrient Dynamics in Pine Plantations in Southern Brazil
Provedor de dados: 90
Autores: Barros Filho,Nairam Felix de; Schumacher,Mauro Valdir; Neves,Júlio César Lima; Barros,Nairam Felix de; Valadares,Samuel Vasconcelos.
ABSTRACT For the development of nutrient budget models to recommend lime and fertilizers for agricultural and forestry crops, curves of plant growth and nutrient accumulation are required. Information about how nutrients are partitioned between the different plant organs is also necessary, but still scarce for pine in Brazil. This study evaluated the growth, biomass partitioning, and nutrient dynamics in pine forests in southern Brazil. To this end, we assessed unthinned 2, 4, 6, and 8-year-old stands of Pinus taeda L. Three plots of 20 × 30 m per stand were delimited, in which three trees of different classes of diameter at breast height (DBH) were chosen. These trees were measured, felled, and the weight of their fresh components (leaves, branches, bark,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pinus taeda; Nutrient content; Nutrient partitioning; Nutrient use efficiency.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100536

Peach palm growth and heart-of-palm yield responses to liming
Provedor de dados: 90
Autores: Bovi,M. L. A.; Spiering,S. H.; Saes,L. A.
The effects of liming rates on growth and heart-of-palm yield of peach palm plants (Bactris gasipaes Kunth) were studied in a two-year field experiment conducted in Pariquera-Açu, State of Sao Paulo, Brazil. Soils in this region are allic (sub group Ultic Haplorthox), with base saturation ranging from 15 to 26 % of the cation exchange capacity (CEC). A randomized complete block design, with five rates of dolomitic limestone (0, 0.7, 4.7, 8.7, and 14.6 Mg ha-1) and five replications was utilized. Individual plots were composed of 80 plants but only the inner rows (24 plants) were used for data recording. Planting spacing was 2 x 1 m. There was a cubic effect of liming rates on growth and yield. Maximum heart-of-palm yield was estimated to be achieved at 4.3...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bactris gasipaes; Biomass; Limestone; Pejibaye.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832004000600009

Initial growth of Schizolobium parahybae in Brazilian Cerrado soil under liming and mineral fertilization
Provedor de dados: 91
Autores: Coneglian,Ademilson; Ribeiro,Pedro H. P.; Melo,Bruno S.; Pereira,Rennan F.; Dorneles Junior,Joáz.
ABSTRACT High prices and the scarcity of hardwoods require the use of alternative wood sources, such as the Guapuruvu (Schizolobium parahybae), an arboreal species native to the Atlantic Forest, which has fast growth and high market potential. However, there is no information on its cultivation in the Brazilian Cerrado. Thus, this study aimed to analyze the contribution of mineral fertilization and liming in a Cerrado soil on the initial growth of Schizolobium parahybae. The experiment was set in a randomized block design, with 4 treatments (Cerrado soil; soil + liming; soil + fertilizer; and soil + fertilizer + liming) and 15 replicates. The following variables were analyzed: plant height, stem diameter, number of leaves, total, shoot, leaf, root and stem...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Guapuruvu; Native species; Timber potential.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016001000908

Mineral composition and growth of babycorn under swine wastewater combined with chemical fertilization
Provedor de dados: 91
Autores: Meneghetti,Adriana M.; Nóbrega,Lúcia H. P.; Sampaio,Silvio C.; Ferques,Rafael G.
The objective of this study was to evaluate the application of wastewater from swine manure (ARS) and chemical fertilization on foliar concentrations of macronutrients and micronutrients, and its relationship with the growth of babycorn. An experiment was conducted in completely randomized design with eight treatments and three replications in 4 x 2 factorial arrangement, which consisted of the application of four doses of swine wastewater (0, 40, 80 and 120 kg N ha-1) and two levels of chemical fertilization (0 and 40 kg ha-1). The results indicated that the increase in fertilization using swine wastewater manure resulted in significant differences for babycorn's foliar concentrations of N and P, promoting levels below the adequate for N and K,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays L.; Leaf content nutrients.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662012001100008

Formation of ‘Crioula’ guava rootstock under saline water irrigation and nitrogen doses
Provedor de dados: 91
Autores: Souza,Leandro de P.; Nobre,Reginaldo G.; Silva,Evandro M. da; Lima,Geovani S. de; Pinheiro,Francisco W. A.; Almeida,Luana L. de S.
ABSTRACT The objective of this research was to evaluate the growth and formation of fresh and dry weight of ‘Crioula’ guava rootstock irrigated with waters of different saline levels and nitrogen (N) doses, in an experiment conducted in plastic tubes under greenhouse conditions. The experimental design was randomized blocks, in a 5 x 4 factorial scheme with four replicates, and the treatments consisted of five levels of water electrical conductivity - ECw (0.3, 1.1, 1.9, 2.7 and 3.5 dS m-1) and four N doses (70, 100, 130 and 160% of the N dose recommended for the cultivation of guava seedlings, cv. ‘Paluma’). The dose referring to 100% corresponds to 773 mg of N dm-3. The highest growth of ‘Crioula’ guava rootstock was obtained with ECw of 0.3 dS m-1 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Psidium guajava L.; Water electrical conductivity; Nitrogen.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000800739

Growth and production components of West Indian cherry cultivated with saline waters and potassium fertilization
Provedor de dados: 91
Autores: Lima,Geovani S. de; Pinheiro,Francisco W. A.; Dias,Adaan S.; Gheyi,Hans R.; Soares,Lauriane A. dos A.; Silva,Saulo S. da.
ABSTRACT Due to water limitations in terms of both quantity and quality in the semi-arid region of northeastern Brazil, the use of waters with high concentrations of salts become necessary in irrigated agriculture. Thus, this study aimed to evaluate the growth and production of grafted West Indian cherry under saline water irrigation and potassium fertilization. The experiment was carried out in drainage lysimeters under protected environment conditions, using a Regolithic Neosol with sandy loam texture. Treatments resulted from the combination of two levels of electrical conductivity - ECw (0.8 and 3.8 dS m-1) of irrigation water and four doses of potassium (50, 75, 100 and 125% of the recommendation of Musser), arranged in a randomized block design, with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malpighia emarginata; Salt stress; Osmoregulation.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000400250

Irrigation and lithothamnium fertilization in bell pepper cultivated in organic system
Provedor de dados: 91
Autores: Evangelista,Adão W. P.; Sá,André R. M. de; Alves Júnior,José; Casaroli,Derblai; Leandro,Wilson M.; Souza,Jorge L. M. de.
ABSTRACT For proper plant growth and achievement of satisfactory yield, it is essential to replenish water and nutrients, in the right amount and time. Therefore, the aim of this study was to evaluate the effects of soil water potential and lithothamnium doses on the growth and yield of bell pepper fruits in an organic production system. The experimental design was randomized blocks in a 5 x 4 factorial scheme, with four replicates. The treatments were five lithothamnium doses (0, 0.5, 1, 2 and 4 g dm-3) and four soil water potentials (-6, -24, -42 and -60 kPa). Increasing lithothamnium doses and irrigations based on increasing soil water potentials produced linear increase in plant growth and fruit production. The maximum economic efficiency of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capsicum annuum L.; Marine input; Soil water potential.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000900830

Saline water irrigation managements on growth of ornamental plants
Provedor de dados: 91
Autores: Oliveira,Francisco I. F.; Medeiros,Wiliana J. F. de; Lacerda,Claudivan F. de; Neves,Antônia L. R.; Oliveira,Davi R.
ABSTRACT Biosaline agriculture is an option for using waters with lower quality. Thus, the objective of this study was to evaluate the growth of ornamental species under irrigation with increasing water salinity levels in two methods of water application. The study was conducted in a greenhouse, in the municipality of Fortaleza, Ceará, Brazil. The treatments were distributed in randomized blocks in split plots, with six levels of water salinity in the plots (0.6 - control, 1.2, 1.8, 2.4, 3.0 and 3.6 dS m-1), two methods of water application in the subplots (localized and sprinkler irrigation) and four ornamental species in the sub-subplots (Catharanthus roseus, Allamanda cathartica, Ixora coccinea and Duranta erecta), with four replicates. Increase in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Water quality; Salt stress; Salt tolerance; Ornamentals species.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017001100739

Sanitary landfill leachate as a source of nutrients on the initial growth of sunflower plants
Provedor de dados: 91
Autores: Nunes Júnior,Francisco H.; Gondim,Franklin A.; Pereira,Magnum de S.; Braga,Brennda B.; Pontes Filho,Roberto A.; Barbosa,Francisca E. L.
ABSTRACT The aim of this study was to evaluate the initial growth of sunflower seedlings under different concentrations of sanitary landfill leachate, considering the feasibility of its use as source of nutrients for agricultural production. Biometric and vigor variables were analyzed through the measurements of collar diameter, shoot height, number of leaves and shoot and root fresh and dry matters, from January to February 2015. The experimental design was completely randomized in a 5 x 4 factorial scheme: five leachate concentrations (0, 40, 60, 80 and 100 kg N ha-1) x four harvest periods (14, 21, 25 and 29 days after sowing), with five replicates each containing two plants. The data were subjected to analysis of variance and polynomial regression, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Urban waste; Helianthus annus L.; Growth analysis.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000800746

Growth and fiber quality of colored cotton under salinity management strategies
Provedor de dados: 91
Autores: Soares,Lauriane A. dos A.; Fernandes,Pedro D.; Lima,Geovani S. de; Suassuna,Janivan F.; Brito,Marcos E. B.; Sá,Francisco V. da S.
ABSTRACT Using saline water in the agricultural activity has become a reality in several regions of the world. Due to the increase in the demand for fresh water, it is necessary to use cultivation strategies and genotypes tolerant to saline stress to make the production viable. In this context, effects of irrigation management strategies with low-salinity water (0.8 dS m-1) and high-salinity water (9.0 dS m-1) were evaluated, varying the phenological stages of the plants, on the growth and fiber quality of colored cotton. Three cotton cultivars submitted to seven irrigation management strategies were used, constituting a 3 x 7 factorial scheme, in a randomized block design with three replicates, in plots and in protected environment. Saline water...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gossypium hirsutum L.; Saline stress; Phenological stages.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000500332

Tolerance of castor bean cultivars under salt stress
Provedor de dados: 91
Autores: Sá,Francisco V. da S.; Paiva,Emanoela P. de; Mesquita,Evandro F. de; Bertino,Antonio M. P.; Barbosa,Marcelo A.; Souto,Lauter S.
ABSTRACT This study aimed to evaluate the tolerance of castor bean cultivars under salt stress during the initial growth stage. The experiment was set in randomized blocks, in a 5 x 4 factorial scheme, resulting in 20 treatments, 5 salinity levels (0.6-control, 1.2, 1.8, 2.4 and 3.0 dS m-1) and 4 castor bean cultivars (BRS Energy, LA Guarani, BRS Gabriela and IAC 028)] with 3 replicates. At 30 days after sowing, plants were evaluated for growth, dry matter accumulation and salt tolerance. Increased salinity levels in the water used for irrigation reduced the growth of all the studied cultivars. The salt tolerance of the studied castor bean cultivars follows the following order: BRS Energia &gt; BRS Gabriela = IAC 028 &gt; LA Guarani.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ricinus communis L.; Growth; Selection germoplasm; Water quality.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000600557

Organic compost and wastewater on the initial growth of oilseed plants
Provedor de dados: 91
Autores: Pereira,Júlia S.; Guimarães,Jean P.; Lopes,Riuzuani M. B. P.; Farias,Maria S. S. de; Lima,Vera L. A. de; Azevedo,Carlos A. V. de.
ABSTRACT The study was conducted in two experiments in greenhouse of the CTRN/UFCG, aiming to evaluate the use of organic compost from household garbage and irrigation with treated domestic wastewater on the growth of castor bean 'BRS-188/Paraguaçu' and sunflower 'Embrapa 122-V2000'. Both experiments were conducted a randomized block design in 6 x 2 factorial scheme, with three replicates, which corresponded to six doses of organic compost (0, 1.2, 2.0, 2.8, 3.6 and 4.4 kg pot-1, equivalent to 0, 60, 100, 140, 180 and 220 kg N ha-1) and two types of water (freshwater and wastewater). It was found that the organic compost doses significantly influenced the growth of sunflower and castor bean in all evaluations, except for stem diameter. The maximum plant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Castor bean; Sunflower; Solid waste.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000600501

Cultivation of cherry tomato under irrigation with saline water and nitrogen fertilization
Provedor de dados: 91
Autores: Vieira,Ianne G. S.; Nobre,Reginaldo G.; Dias,Adaan S.; Pinheiro,Francisco W. A.
ABSTRACT The study was carried out from August 2013 to January 2014 to evaluate growth and production of cherry tomato cultivated under irrigation with water of different salinity levels and fertilized with different nitrogen (N) doses, in experiment conducted in drainage lysimeters under greenhouse conditions, at the Center for Agrifood Science and Technology of the Federal University of Campina Grande. The statistical design was randomized blocks in a 5 x 4 factorial scheme, with three replicates, and the treatments consisted of five levels of electrical conductivity of water (0.3, 1.5, 2.5, 3.5 and 4.5 dS m-1) and four N doses (60, 100, 140 and 180 mg kg-1). Growth and production variables of cherry tomato decrease linearly from the irrigation water...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lycopersicon esculentum Mill.; Salt stress; Mineral nutrition; Growth.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000100055

Maize growth in response to Azospirillum brasilense, Rhizobium tropici, molybdenum and nitrogen
Provedor de dados: 91
Autores: Picazevicz,Angelita A. C.; Kusdra,Jorge F.; Moreno,Andréia de L.
ABSTRACT The objective of this research was to evaluate the effect of Azospirillum brasilense, Rhizobium tropici, nitrogen (N) and molybdenum (Mo) fertilization on maize growth. The experiment was carried out in a greenhouse from October to November 2015, in a completely randomized design, in 2 x 2 x 2 x 5 factorial scheme, with 5 replicates, corresponding to the absence and presence of Azospirillum brasilense, Rhizobium tropici, N (30 kg ha-1) and five Mo doses (0, 7.5, 15.0, 22.5 and 30.0 g ha-1). The analyzed variables were: plant height, basal stem diameter, dry biomass of shoots, roots, total and N accumulated in the shoots. There was double or triple interaction between N fertilization, Azospirillum brasilense and Rhizobium tropici for the evaluated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; PGPR; Diazotrophic microorganisms; Co-inoculation; BNF.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000900623

Organic fertilization to attenuate water salinity effect on papaya growth
Provedor de dados: 91
Autores: Sousa,Mônica S. da S.; Lima,Vera L. A. de; Brito,Marcos E. B.; Silva,Luderlândio de A.; Moreira,Rômulo C. L.; Oliveira,Carlos J. A.
ABSTRACT The salinity of water and soil reduces the growth and production of crops, especially the fruit trees, such as papaya. Thus, it is necessary to obtain management alternatives for cultivation under these conditions. Therefore, the objective of this study was to evaluate the growth and phytomass of papaya cultivated under irrigation with saline water and organic fertilization. An experiment was set up using a randomized block design, with the treatments distributed in a 5 x 2 factorial scheme, consisting of five levels of salinity of irrigation water (0.6, 1.2, 1.8, 2.4 and 3.0 dS m-1) and two levels of organic fertilization (10 and 20 L of bovine manure per plant), with three replications, totaling thirty experimental plots. Growth variables of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carica papaya; Saline stress; Organic matter.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000200079

Growth of seedlings and young plants of coffee in composts of textile industry residues
Provedor de dados: 91
Autores: Neiva Júnior,Eudes; França,André C.; Grazziotti,Paulo H.; Porto,Douglas W. B.; Araújo,Fausto H. V.; Leal,Felipe D. S.
ABSTRACT The final destination of solid industrial waste is one of the main environmental problems currently facing, due to its potential for contamination. With the evolution of environmental policy and awareness, the proper destination of these wastes is stimulated, seeking new technologies to fulfil the demand for the products generated. One of the solutions to this environmental problem is to use these residues as fertilizers in agriculture. The objective of this study was to evaluate the use of toxic textile residues as a substrate component of coffee seedlings and as fertilizer in the initial growth of coffee plants. The study was divided into three experiments: production of seedlings, initial growth of potted plants and in the field. In the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Organic fertilization; Coffea arabica; Composting.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000300188

Initial growth of Brachiaria subquadripara (Trin.) Hitchc. plants under different nutritional conditions
Provedor de dados: 91
Autores: Domingos,Vanessa D.; Martins,Dagoberto; Costa,Neumarcio V.; Costa,Andreia C. P. R. da; Marchi,Sidnei R. de.
ABSTRACT The objective of this study was to evaluate the initial growth of emergent plants of Brachiaria subquadripara under different conditions of availability levels of the nutrients nitrogen (N), phosphorus (P), and potassium (K) provided to the plants via nutrient solution in a greenhouse. The treatments consisted of five concentrations of N (0, 42.0, 84.0, 126.0, and 168.0 mg L-1), five concentrations of P (0, 6.2, 12.4, 18.6, and 24.8 mg L-1) and five concentrations of K (0, 46.8, 93.6, 140.4, and 187.2 mg L-1) which were adapted from a base solution. The results showed that the initial growth of plants was slow up to 21 days after transplantation (DAT) and it increased in accordance with increments in N, P, and K concentrations in the nutrient...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Urochloa subquadripara; Urochloa arrecta; Aquatic plant; Weed; Eutrophication; Water reservoir.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015000600560

Changes in osmoregulatory metabolism of cotton genotypes during water deficit and recovery period
Provedor de dados: 91
Autores: Macêdo,Érika C. F. de; Zonta,João H.; Melo,Yuri L.; Melo,Alberto S. de; Silva,Duval C. da; Andrade,Wellerson L. de.
ABSTRACT The aim of this study was to evaluate the changes in osmoregulatory metabolism of cotton genotypes subjected to water deficit and recovery period. In a greenhouse, six cotton genotypes and two water managements were combined in a 6 x 2 factorial scheme, in a completely randomized design, evaluated after 14 and 22 days under water stress and recovery conditions, respectively. The water status, growth indicators and compatible solutes in the leaves were evaluated. The genotypes BRS Seridó, BRS Aroeira and BRS 7MH withstand better the stress condition because they had lower variations in their water potentials due to the osmotic adjustment and maintained their growth under water deficit conditions. The BRS 286 is the most sensitive genotype to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gossypium hirsutum L.; Osmotic adjustment; Compatible osmolytes; Drought.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000800607

Morphological and photosynthetic adaptations of Tabebuia aurea seedlings in the nursery
Provedor de dados: 91
Autores: Gonçalves,Eduardo R; Souza,Felipe C.; Santos,Luan N. dos; Silva,José V.; Ferreira,Vilma M.; Endres,Lauricio.
Tabebuia aurea (Benth. &amp;amp; Hook. f. ex S. Moore) (Bignoniaceae) is a boreal species common in Brazil. It is used for ornamental parks and along sidewalks. Its timber is also used for furniture. The objective of this study was to evaluate the effect of nursery shading on the growth and photosynthesis of T. aurea and their photosynthetic adaptation after being transferred to direct sunlight. The T. aurea seedlings were grown under 0, 50, 70 or 95% shade. The photosynthetic active radiation and leaf gas exchange were measured over two distinct periods: 51 (young seedlings) and 70 days after having been sown under each shade treatment. Immediately after the measurements were taken, the seedlings were transferred into full sunlight and the measurements...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bignoniaceae; Nursery; Atlantic Forest; Leaf gas exchange.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662013001100011

Gas exchanges and growth of cotton cultivars under water salinity
Provedor de dados: 91
Autores: Silva,André A. R. da; Veloso,Luana L. de S. A.; Nascimento,Ronaldo do; Nascimento,Elka C. S.; Bezerra,Carlos V. de C.; Pereira,Márcia C. de A.
ABSTRACT Indication of salt-tolerant cotton cultivars can make the agricultural exploitation with saline water irrigation feasible in the Brazilian semi-arid region. Thus, this study aimed to evaluate the gas exchanges and growth of cotton cultivars irrigated with saline water. The study was conducted in pots adapted as drainage lysimeters under greenhouse conditions, using a sandy loam Entisols as substrate. Treatments were distributed in completely randomized design, in 5 x 2 factorial arrangement, relative to five levels of irrigation water electrical conductivity - ECw (1.5, 3.0, 4.5, 6.0 and 7.5 dS m-1) and two cotton cultivars (BRS 368 RF and BRS Safira). Increase in irrigation water salinity inhibits the vegetative growth and gas exchanges of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gossypium hirsutum L.; Tolerance; Cultivar BRS Safira.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000600393

Population growth and within-plant distribution of the striped mealybug Ferrisia virgata (Cockerell) (Hemiptera, Pseudococcidae) on cotton
Provedor de dados: 92
Autores: Oliveira,Martin D.; Silva-Torres,Christian S. A.; Torres,Jorge B.; Oliveira,José E. Morais.
Population growth and within-plant distribution of the striped mealybug Ferrisia virgata (Cockerell) (Hemiptera, Pseudococcidae) on cotton. The striped mealybug, Ferrisia virgata (Cockerell) (Hemiptera, Pseudococcidae), is a widely distributed and polyphagous pest species, which naturally occurs on cotton plants in Brazil. This study evaluated the establishment and population growth as well as the within-plant distribution of F. virgata on four cotton cultivars: CNPA 7H (white fibers), BRS Verde, BRS Safira, and BRS Rubi (colored fibers). The experiment was conducted in a complete randomized design with four treatments (cultivars) and 18 replications of each. Thus, cotton plants of each cultivar were infested with 100 newly hatched nymphs of F. virgata....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colored fiber cotton; Gossypium hirsutum; Host susceptibility; Insecta.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262014000100012

ENDOPHYTIC BACTERIA USED AS BIOINOCULANTS IN MICROPROPAGATED BANANA SEEDLINGS
Provedor de dados: 94
Autores: SOUZA,GLEIKA LARISSE OLIVEIRA DORASIO DE; SILVA,DEIVISSON FERREIRA DA; NIETSCHE,SILVIA; XAVIER,ADELICA APARECIDA; PEREIRA,MARLON CRISTIAN TOLEDO.
ABSTRACT  The use of bio-fertilizers and microbial inoculants that promote plant growth and increased yield has been accepted as an alternative to reduce the use of chemical fertilizers. The objective of the present study was to evaluate the effect of plant growth promoting bacteria inoculation on growth and quality of micropropagated banana seedlings ‘Prata Anã’. The experimental design was completely randomized, with four replications and the treatments consisted of 24 isolates of endophytic bacteria. The isolates EB-50 (Bacillus sp.) and EB-133 (Bacillus amyloliquefaciens) characterized as diazotrophic, the EB-51 (Bacillus pumilus) indicate for inorganic phosphate solubilization and EB-55(Bacillus subtilis) and EB-40 (Bacillus sp.) indole-3-acetic acid...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Musa sp; Nitrogen fixation; Phosphate solubilization; IAA; Plant growth promoting bacteria.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000200702

Tipping off pruning and use of biofertilizer in the growth of pecan trees
Provedor de dados: 94
Autores: Lange Junior,Hélio; Martins,Carlos Roberto; Schwartz,Elisane; Malgarim,Marcelo Barbosa.
Abstract  In Brazil, the cultivation of pecan trees has substantially increased in the last years, thus requiring the development of scientific research and technologies to improve it. Thus, the aim of this study was to evaluate the tipping off effect associated with the use of biofertilizer in the growth of newly implanted plants in their final site. The treatments consisted of : control; application of “supermagro” biofertilizer; tipping off of plants, and tipping off associated with the use of biofertilizer. The variables evaluated were: plant height; plant growth rate; stem thickness; number of leaves, and number of leaves/stem height ratio. In addition, leaf nutrient content analysis was performed. Tipping off and the use of biofertilizer provide...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Pecan culture; Barton cultivar; Carya illinoinensis; Management; Fruit culture.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452020000503001

Growth, production and quality of pineapple in response to herbicide use
Provedor de dados: 94
Autores: Maia,Leonardo Carvalho Brant; Maia,Victor Martins; Lima,Mário Henrique Melo e; Aspiazú,Ignacio; Pegoraro,Rodinei Facco.
In pineapple fields, weed competition is exacerbated by the fact that the crop is small and has a very slow vegetative development. The objective of this study was to determine the effects of herbicides on growth, yield and quality of pineapple, cultivar 'Pérola'. The experimental design was in randomized blocks with four treatments and four replications. Treatments consisted of weeding by hoe and the herbicides diuron; fluazifop-p-butyl and atrazine + S-metolachlor applied in post-emergence. The characteristics evaluated monthly during the vegetative stage were stem diameter, D-leaf length, number of leaves, number of emitted leaves and percentage of natural floral induction. In the reproductive phase, evaluations were made of average fruit weight (g)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ananas comosus var. comosus; Weeds; Herbicides; 'Pérola'.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452012000300020

Citrus tristeza disease severity and agronomic performance of ‘Pêra’ sweet orange cultivars and selections in the North and Northwest regions of the State of Paraná, Brazil
Provedor de dados: 94
Autores: GIAMPANI,JOSÉ SEGUNDO; TAZIMA,ZULEIDE HISSANO; BABA,VIVIANE YUMI; YADA,INÊS FUMIKO UBUKATA; LEITE JÚNIOR,RUI PEREIRA.
ABSTRACT ‘Pêra’ sweet orange is the most important citrus cultivar in Brazil, but it is highly susceptible to Citrus tristeza virus (CTV), the causal agent of citrus tristeza disease. In this study, we evaluated the severity of citrus tristeza disease and its relation with the agronomic performance of seven cultivars and six selections of ‘Pêra’ sweet orange under field conditions in the North and Northwest regions of the State of Paraná, Brazil. The citrus tristeza disease severity was determined based on symptoms of stem pitting. The vegetative growth assessed in trees of all four locations for the 2012 season, and in two field plots for the 2011, 2012 and 2013 harvests, respectively. The cultivar ‘IPR 153’ (Bianchi) had the best performance concerning...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus sinensis; Stem pitting; Yield; Vegetative growth; Citrus tristeza virus.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000300403

GROWTH AND NUTRITION OF CACAO SEEDLINGS INFLUENCED BY ZINC APLICATION IN SOIL
Provedor de dados: 94
Autores: CRUZ NETO,RAIMUNDO DE OLIVEIRA; SOUZA JÚNIOR,JOSÉ OLIMPIO DE; SODRÉ,GEORGE ANDRADE; BALIGAR,VIRUPAX CHANABASAPPA.
ABSTRACT  Levels of Zn in tropical soils profoundly influences growth and nutrition of tree crops. Research was undertaken to assess the effect of soil Zn on growth and nutrition of clonal cacao tree seedlings of PH 16. Three acidic Oxisol soils differing in texture were used with nine doses of Zn (0, 1, 2, 4, 8, 16, 32, 48, and 64 mg dm-3). Rooted clonal seedlings were grown in plastic pot with 11 dm-3 of the soils at varying Zn levels for 240 days. At harvest growth (dry matter mass of leaves, stems, shoots, roots, and total) and nutrient concentrations were determined. The clonal cacao seedlings showed differences for production of dry matter mass and foliar nutrient concentrations for P, K, Ca, Mg, Mn, Fe, Zn, and Cu. There was Zn toxicity in all soils.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Theobroma cacao L.; Micronutrient; Calibration fertilization.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452015000401053

NONLINEAR AGROMETEOROLOGICAL MODELS FOR ESTIMATING LYCHEE FRUIT GROWTH
Provedor de dados: 94
Autores: APARECIDO,LUCAS EDUARDO DE OLIVEIRA; FERREIRA,RAFAEL BIBIANO; ROLIM,GLAUCO DE SOUZA; SOUZA,BIANCA SARZI DE; SOUZA,PAULO SERGIO DE.
ABSTRACT  The influence of climate on the development of lychee fruit is complex, but few studies have discussed the problem. We developed agrometeorological models for simulating the development of fruit fresh matter (FM), fruit dry matter (DM), fruit length (LE), fruit diameter (DI), fruit volume (VO), and fruit number per cluster (FN) of the “Bengal” lychee cultivar as functions of climatic conditions. We conducted three analyses: (a) the influence of mean meteorological elements on the rates of fruit growth, (b) estimation of fruit development by the agrometeorological models using sigmoidal adjustments, and (c) simulation of fruit development using multiple nonlinear regression of two meteorological elements to improve the accuracy. A rate of water...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Analysis of growth; Water deficit; Fruit number; Climate.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000200701

Effects of temperature and volume of water on the growth and development of tadpoles of Pleurodema diplolister and Rhinella granulosa (Amphibia: Anura)
Provedor de dados: 103
Autores: Maciel,Thely A.; Juncá,Flora A.
The capacity of tadpoles to reduce their metamorphosis time and body size in response to fluctuations in environmental variables of temporary ponds has been recorded in field and laboratory studies. The main alterations in this habitat are related to the decrease of the water level and increase in temperature. However, few studies tried to dissociate the effect of these two variables. The aim of the present study was to analyze simultaneously the effects of water volume reduction and temperature on the development and growth in tadpoles of Pleurodema diplolister (Peters, 1870) and Rhinella granulosa (Spix, 1824) - species that use temporary ponds for reproduction. The tadpoles of these two species were subject to four treatments: (1) constant volume of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bufonidae; Leiuperidae; Temporary ponds.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000300005

Growth, sexual maturity and sexual dimorphism of Aegla georginae (Decapoda: Anomura: Aeglidae) in a tributary of the Ibicuí River in southern Brazil
Provedor de dados: 103
Autores: Copatti,Carlos Eduardo; Legramanti,Rosemari Parise; Trevisan,André; Santos,Sandro.
ABSTRACT This study aimed to estimate the growth and size at the onset of sexual maturity in a population of Aegla georginae . Specimens were sampled from November 2007 to October 2008 in the Perau Creek (Ibicuí-Mirim sub-basin; Uruguay River basin). All captured specimens were sexed, and their cephalothoracic length (CL), minor and larger propodi length (MPL, LPL, respectively), height of major chela (HMQ), and abdomen width (AW) were measured. The lengthwise growth of males and females was evaluated using the Bertalanffy model, and the morphological sexual maturity was evaluated using the REGRANS program. The smallest ovigerous female presented a 10.45 mm CL. Males reached larger sizes than did females, but the growth rate was similar between the sexes....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Age estimative; Bertalanffy; Longevity; Size at onset maturity.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702016000300501

Spatial and temporal variation in population structure of Hemigrammus marginatus (Characiformes: Characidae) in streams of the Ivinhema River Basin, Brazil
Provedor de dados: 103
Autores: Lourenço,Luzia da Silva; Fernandes,Izaias Médice; Súarez,Yzel Rondon.
The present study has assessed spatial and temporal variations in the length structure of Hemigrammus marginatus Ellis, 1911 and estimated growth parameters for the species. Sampling was carried out in five streams in the Vitória and Piravevê sub-basins of the Ivinhema River from January to December 2002. A total of 933 specimens of H. marginatus were caught (97 in the Vitória sub-basin and 836 in the Piravevê sub-basin). Mean length of the individuals caught in the Piravevê sub-basin was shorter (21.58 mm, SD = 4.67) than that of individuals caught in the Vitória sub-basin (29.24 mm, SD = 4.42). Analysis of condition factor calculated from the weight/length relationship revealed that the values were constant both spatially (between sub-basins) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Age; Growth; Mortality; Recruitment; Weight-length relationship.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702012000400003

Growth and mortality rates of yellowfin tuna, Thunnus albacares (Perciformes: Scombridae), in the eastern and central Pacific Ocean
Provedor de dados: 103
Autores: Zhu,Guoping; Xu,Liuxiong; Dai,Xiaojie; Liu,Wei.
Age and growth parameters were estimated for the yellowfin tuna Thunnus albacares (Bonnaterre, 1788). Atotal of 443 individuals were sampled from China longline fisheries in the eastern and central Pacific Ocean from February to November 2006. The von Bertalanffy growth parameters were estimated at L∞ = 175.9 cm fork length, k = 0.52 year-1, and t0 = 0.19 year. The total mortality rate (Z) was estimated to be from 1.19 to 1.93 year-1, the fishing mortality (F) and the natural mortality (M) were calculated to be 0.91 year-1 and 0.65 year-1, respectively. The rate of exploitation (U) was estimated to be 0.46. This study provides estimates of growth and mortality rate for yellowfin tuna in the eastern and central Pacific Ocean, which may be used as biological...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological parameters; Size frequency analysis; Yellowfin tuna.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000200007

Reassessing flavophospholipol effects on broiler performance
Provedor de dados: 96
Autores: Barros,Rafael de; Vieira,Sergio Luiz; Favero,André; Taschetto,Diogo; Mascarello,Natacha Camilotti; Cemin,Henrique Scher.
The objective of this study was to evaluate bird responses to flavophospholipol at higher doses than those recommended by the Brazilian legislation. A trial was conducted with 900 male broilers divided into five doses of flavophospholipol: 0, 2, 4, 8 and 16 mg/kg. The performance evaluation was conducted weekly until 42 days of age. The evaluated parameters were: weight gain, feed conversion corrected for mortality, feed intake and mortality. At the end of experimental period, birds supplemented with growth promoter differed from the negative control for weight gain and feed conversion in the period from 1 to 42 days. Body weight gain and feed conversion were significantly higher for birds fed 16 mg/kg of flavophospholipol, compared with treatment without...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Bambermycin; Broiler chicken; Flavomycin; Flavophospholipol; Growth promoter.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012001200011

Effect of stock density of cultured Amazon Apple Snail Pomacea dolioides (Gastropoda: Ampullariidae) in Brazil
Provedor de dados: 96
Autores: Pires-Júnior,Amilcar Nogueira; Hattori,Gustavo Yomar; Sant'Anna,Bruno Sampaio.
ABSTRACT This study evaluated the biomass gain, specific growth rate, absolute weight gain, and survival rate of the gastropod Pomacea dolioides cultivated in different stocking densities. To perform the experiment, samples were collected in March and June 2015. A total of 40 adult specimens were collected in the Jauary neighborhood (03°08′19.9"S, 58°27′32.5"W), municipality of Itacoatiara, AM, Brazil. They were kept in the laboratory for breeding to obtain the young P. dolioides, which were distributed into tanks containing 4 L of water and an aeration system, in three densities: 2.5 animals/L, 5 animals/L, and 10 animals/L, and were fed fish ration (34% gross protein). The specimens were measured for shell length and weight every fifteen days. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture; Growth; Mollusk; Stock enhancement.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100153

Influence of eggshell colour on egg yolk antibody level, incubation results, and growth in broiler breeders
Provedor de dados: 96
Autores: Baylan,Mikail; Celik,Ladine Baykal; Akpinar,Gulsen Copur; Alasahan,Sema; Kucukgul,Altug; Dogan,Sibel Canogullari.
ABSTRACT This study was performed to determine the effect of shell colour in eggs acquired from Ross-308 broiler breeders on the interior and exterior quality of the egg, the antibody content of the egg yolk, and growth performance. The shell colours of a total of 1350 eggs were classified, using a colorimeter, into three groups: dark (E&lt;64), medium (E:64.00-67.00), and light (E&gt;67). The difference between groups with respect to egg weight, shape index, shell weight, and Haugh unit value was significant. Egg yolk antibody content (IgY) was 6.658 mg/mL in the dark colour group, 5.130 mg/mL in the medium colour group, and 5.242 mg/mL in the light colour group. Among incubation characteristics, the fertility rate as, in order, 94.66%, 92.14%, and 87.92%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Embryonic mortality; Hatchability; Growth performance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000200105

Genetic evaluation of partial growth trajectory of Santa Inês breed using random regression models
Provedor de dados: 96
Autores: Oliveira,Kassiana Adriano Pinto de; Lôbo,Raimundo Nonato Braga; Facó,Olivardo.
It was evaluated data set of 19,303 weight records of Santa Inês sheep in order to evaluate distinct polynomial functions with different order for better adjustements of fixed and random regressions of growth trajectory and to estimate (co)variances components and genetic parameters of this trajectory. Fixed effects used in analysis were contemporary group, sex and birth type. Ordinary and Legendre polynomials, ranging from two to four orders, were evaluated for fixed regression of average growth trajectory. Legendre and quadratic b-spline functions, ranging from three to four orders, were evaluated for random regressions. Legendre polynomials of order fourth were suitable to fit random regression, while ordinary polynomials of third order were the best...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Β-spline functions; Genetic correlation; Heritability; Legendre polynomials; Ordinary polynomials.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000500013

Morphophysiological characterization of giant missionary grass accessions
Provedor de dados: 96
Autores: Lajús,Cristiano Reschke; Scheffer-Basso,Simone Meredith; Miranda,Mario; Denardin,Rosiane Berenice Nicoloso; Valls,José Francisco Montenegro.
In this study, the phenotypic diversity of five accessions of giant missionary grass (Axonopus jesuiticus × A. scoparius) was evaluated by using morphophysiological traits. Accessions V 14337, V 14403, V 14404, V 14405 and V 14406 are hybrids derived from spontaneous crossing that occurred in Vale do Itajaí, Santa Catarina, Brazil. Plants were cultivated in greenhouse and evaluated at 60, 90, 120, 150, 180, 210 and 240 days of growth. Variation was observed for dry matter production, phenology and morphological traits, showing the possibility of selection. Flowering started at 210 days of growth and only in accessions V 14337 and V 14404. The Mahalanobis distance among accessions ranged from 35.64 (V 14403 and V 14405) to 183.38 (V 14337 and V 14405), and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: A. catharinensis; Dry matter production; Growth analysis; Phenology.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001100004

Traditional and alternative nonlinear models for estimating the growth of Morada Nova sheep
Provedor de dados: 96
Autores: Souza,Laaina de Andrade; Carneiro,Paulo Luiz Souza; Malhado,Carlos Henrique Mendes; Silva,Fabyano Fonseca e; Silveira,Fernanda Gomes da.
In the present study, alternative and traditional nonlinear models to describe growth curves of Morada Nova sheep reared in the state of Bahia, Brazil, were applied. The nonlinear models were: Schnute, Mitscherlich, Gompertz, Logistic, Meloun I Meloun II, III Meloun, Gamito and Meloun IV. The model adjustment was evaluated by using: Adjusted Coefficient of Determination (R²aj), Akaike Information Criterion (AIC), Bayesian Information Criterion (BIC), Mean Squared Error of Prediction (MEP) and Coefficient of Determination of Prediction (R²p). The selection of the best model was based on cluster analysis, using the evaluators as variables. Six out of the nine tested models converged, while Meloun I and Meloun IV were equally effective in explaining animal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cluster analysis; Growth curve; Naturalized breed.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000900007

Carcass quality, parts and tissue development of lambs finished in three systems
Provedor de dados: 96
Autores: Hashimoto,Juliano Hideo; Osório,José Carlos da Silveira; Osório,Maria Teresa Moreira; Bonacina,Marlice Salete; Lehmen,Rosilene Inês; Pedroso,Carlos Eduardo da Silva.
The objective of this study was to evaluate the effect of finishing systems on natural pasture and gender on the carcass quality, parts and tissue development of lambs. Forty-five non-castrated males and forty-five females were distributed in a completely randomized design into three treatments: lamb with mother kept on pasture; weaned lamb kept on pasture and weaned lamb kept on pasture with supplementation (soybean hulls at 1% of body weight). The criteria for slaughter was body condition score (2.0 - 3.0). The carcass characteristics and parts composition were influenced by the sex. The finishing system with supplementation promoted greater carcass yield and longer leg length. The tissue composition was different only for the sex, with the males...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometry; Growth; Leg; Sheep; Shoulder; Tissue composition.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000200029

Adjustment of four growth models through Bayesian inference on weight and body nutrient depositions in laying quail
Provedor de dados: 96
Autores: Finco,Eline Maria; Marcato,Simara Márcia; Furlan,Antonio Claudio; Rossi,Robson Marcelo; Grieser,Daiane de Oliveira; Zancanela,Vittor; Oliveira,Taciana Maria Moraes de; Stanquevis,Caroline Espejo.
ABSTRACT An experiment was conducted to estimate the parameters of the Gompertz, Brody, Logistic, and Von Bertalanffy equations through Bayesian inference and evaluate the potential for growth in terms of weight and body composition of laying female quail (Coturnix coturnix japonica). The weights and body compositions of the birds were obtained weekly (1-119 days), allowing the adjustment of the four equations by Bayesian inference. The parameters mature weight (β1), integration constant (β2), maturity rate (β3), and their credibility intervals in four models on body weight and body components were properly estimated by Bayesian inference to describe the body growth in laying quail. The inflection point was determined by the 1st and 2nd derivatives of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adjust quality; Development; Maturity rate; Nonlinear models; Weight at maturity.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016001200737

Comparison of growth curve models in Japanese quail raised in cages enriched with different colored lights
Provedor de dados: 96
Autores: Karadavut,Ufuk; Taskin,Atilla; Genc,Serdar.
ABSTRACT This study compared the growth curve models for the live weight and body length of Japanese quail raised under lights of various colors. The Brody, Gompertz, and von Bertalanffy growth models were used to investigate the effect of different colored lights on Japanese quail growth over a period of six weeks (1-42 days). Four lights of different colors, comprising yellow, red, blue, and white, were used in the study. According to the different light colors, the mean and standard error for the live weight and body length on day 42 were calculated as 196.09 and 3.87 g and 29.48 and 0.192 cm, respectively. Furthermore, while the differences in live weight according to the color of the light being used were statistically significant on days 14, 21, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bird; Body parametrs; Environmental enrichment; Led light.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017001100839

Protein requirement for Trichogaster lalius, blue variety
Provedor de dados: 96
Autores: Zuanon,Jener Alexandre Sampaio; Carneiro,Antonio Policarpo Souza; Nascimento,Lidiane da Silva; Silva,Donizete Aparecido da; Pontes,Marcelo Duarte; Kanashiro,Márcio Yoshiyuki; Salaro,Ana Lúcia.
The objective of the present study was to evaluate the protein requirement of juvenile Trichogaster lalius, blue variety. The experimental design was of randomised blocks (B1 = initial weight of 1.04±0.05 g and B2 = 1.36±0.02 g), with two replicates within each block and five treatments (230, 270, 310, 350 and 390 g CP/kg diet). The fish were fed to satiation, three times a day for 90 days. The study evaluated: survival rate, weight gain, final length, feed intake, feed conversion ratio, protein efficiency ratio, specific growth rate and condition factor. There was a linear effect of dietary protein levels for protein efficiency ratio, specific growth rate (positive linear effect) and feed conversion ratio (negative linear effect). For weight gain, final...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dwarf gourami; Growth performance; Nutrient requirements; Ornamental fish.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000200010

Essential oils in the initial phase of broodstock diets of Nile tilapia
Provedor de dados: 96
Autores: Freccia,André; Sousa,Sília Maria de Negreiros; Meurer,Fábio; Butzge,Arno Juliano; Mewes,Juliana Kasper; Bombardelli,Robie Allan.
This study evaluated the effect of feed supplementation (at doses of 0, 50, 100, 150, and 200 mg/kg) with SALUTO®, a microencapsulated blend of essential oils including carvacrol, cinnamaldehyde, 1,8-cineol, and pepper oleoresin, in Nile tilapia (Oreochromis niloticus) broodstock on reproductive and growth parameters during the initial phase of rearing. The growth parameters, somatic indexes and gonadal and hepatic parameters were analyzed. Quantitative parameters of growth, ovary fat and crude protein were not affected by supplementation of the additive. However, an increase in crude protein in the female liver was observed in correlation with increased essential oil levels. The female hepatosomatic index was also correlated with supplementation of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Additive; Fish nutrition; Growth promoter; Hepatosomatic index.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000100001

Ability of non-linear mixed models to predict growth in laying hens
Provedor de dados: 96
Autores: Galeano-Vasco,Luis Fernando; Cerón-Muñoz,Mario Fernando; Narváez-Solarte,William.
In this study, the Von Bertalanffy, Richards, Gompertz, Brody, and Logistics non-linear mixed regression models were compared for their ability to estimate the growth curve in commercial laying hens. Data were obtained from 100 Lohmann LSL layers. The animals were identified and then weighed weekly from day 20 after hatch until they were 553 days of age. All the nonlinear models used were transformed into mixed models by the inclusion of random parameters. Accuracy of the models was determined by the Akaike and Bayesian information criteria (AIC and BIC, respectively), and the correlation values. According to AIC, BIC, and correlation values, the best fit for modeling the growth curve of the birds was obtained with Gompertz, followed by Richards, and then...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chickens; Mathematical models; Poultry; Regression analysis; Weight gain.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014001100573

Influence of photoperiod on growth, uniformity, and survival of larvae of the Amazonian ornamental  Heros severus (Heckel, 1840)
Provedor de dados: 96
Autores: Veras,Galileu Crovatto; Paixão,Daércio José de Macedo Ribeiro; Brabo,Marcos Ferreira; Soares,Lourdes Marília Oliveira; Sales,Abner Dias.
ABSTRACT The objective of this work was to evaluate the influence of photoperiod on growth, uniformity, and survival of larvae of the Amazonian ornamental fish severum (Heros severus). A completely randomized study was used with five treatments (0L:24D, 6L:18D, 12L:12D, 18L:6D, 24L:0D) and four replicates, with the aquaria as the experimental unit. Two hundred severum larvae (3.20±0.16 mg and 5.60±0.00 mm) were distributed into 20 aquariums of one litre at a density of 10 larvae per litre. For a period of 15 days, feed was supplied four times daily with Artemia nauplii in a proportion of 160 nauplii/larvae/feeding. At the end of the experimental period, growth, uniformity, and survival data were subjected to analyses of variance and significance....
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Circadian rhythm; Hatchery; Live food; Ornamental fish; Severum.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016000700422

Creep feeding improves growth performance of suckling piglets
Provedor de dados: 96
Autores: Lee,Sang In; Kim,In Ho.
ABSTRACT The present study evaluated the optimal duration of creep feeding that improves the growth performance and fecal score of piglets and the performance and estrus interval of sows. Sixteen sows (Yorkshire × Landrace) and their litters were used in this 24-day trial. Dietary treatments were: Treatment 1, in which creep feed was not provided; treatment 2, in which creep feed was provided at the 7th day of life (day 7 to weaning); treatment 3, in which creep feed was provided at the 14th day of life (day 14 to weaning); and treatment 4, in which creep feed was provided at the 21st day of life (day 21 to weaning). There was no difference in body weight or loss, backfat thickness or loss, or estrus interval among treatments in the sows. Piglets in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Creep feeding; Growth performance; Sow; Suckling piglets.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100542

Effect of ractopamine on Nile tilapia in the end of grow-out period
Provedor de dados: 96
Autores: Tovo Neto,Aldo; Bittarello,Alis Correia; Tovo,Rogério Paulo; Meurer,Fábio; Santos,Lilian Dena dos; Bombardelli,Robie Allan.
ABSTRACT This experiment was conducted in outdoor tanks to evaluate the effect of inclusion of ractopamine at increasing levels (0, 4, 8, 12, and 16 mg kg−1) as additive in Nile tilapia (Oreochromis niloticus) diet in the final grow-out period (750-920 g) during 31 days. Therefore, 400 fish were housed into 20 experimental tanks, in a completely randomized design with five treatments and four replications. Growth performance, body yield, and chemical composition of fish muscle and organs were evaluated. Fish fed diets containing up to 16 mg kg−1 of ractopamine for 31 days did not improve growth or performance parameters. However, lipid percentage of abdominal muscle was different in fish fed ractopamine, reaching the lowest level of 199.3 g kg−1 of ether...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beta-adrenergic; Feed additive; Fish nutrition; Growth promoters.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000500367

Morphological and growth responses to water stress of two sub-populations of Bromus pictus from soils with contrasting water availability
Provedor de dados: 97
Autores: ROTUNDO,JOSÉ L; CIPRIOTTI,PABLO A; GUNDEL,PEDRO E.
We studied morphological and growth responses to drought of two sub-populations of Bromus pictus from communities with soils with different water availability from the Patagonian steppe. After a process of acclimatization common to both sub-populations, individuals from both sub-populations were subjected to three levels of water availability during 44 days. Independently of the water availability treatment, the sub-population from the community of high soil water availability showed higher aboveground relative growth rate (RGR) and higher leaf size (area and weight) compared to the sub-population from the community of low soil water availability. These results prove the expected evolution of higher growth rates and leaf sizes in resource rich...
Tipo: Journal article
Palavras-chave: Arid lands; Drought; Ecotypes; Genetic variation; Soil depth.
Ano: 2006
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2006000100006

Lichenometric analysis using genus Rhizocarpon, section Rhizocarpon (Lecanorales: Rhizocarpaceae) at Mount San Lorenzo, southern Chile
Provedor de dados: 97
Autores: MORANO-BÜCHNER,CAROLINA; ARAVENA,JUAN. C.
In this study we present preliminary results on the use of the lichenometric method for age estimation of moraine formation in the Mount San Lorenzo area (47°30' S, 72°21' W), southern Chile. We estimated lichen growth rates of individuals of genus Rhizocarpon, section Rhizocarpon, at two glacier-proximal sites for which independent age estimates were available. These two sites, Lake Shore and Moraine A, presented lichen mean annual growth rates of 0.33 mm and 0.15 mm, respectively. We applied these growth rates to two sites lacking previous dating control: Bedrock and Moraine B, and obtained minimum ages of 70 and 473 years, respectively. Our results allow us to confirm that there is a quantifiable relationship between Rhizocarpon size and age of the...
Tipo: Journal article
Palavras-chave: Chilean Patagonia; Glacial moraines; Lichenometry; Mount San Lorenzo.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2013000400008

Growth and early seedling survival of four Atacama Desert shrub species under experimental light and water availability regimes
Provedor de dados: 97
Autores: Carvajal,Danny E; Loayza,Andrea P; López,Ramiro P; Toro,Pablo J; Squeo,Francisco A.
BACKGROUND: In arid environments, where light and water supply are patchy in space and time, differences in how seedlings tolerate drought and shade conditions will determine the ability of a species to establish. Understanding seedling responses to the interactive effects of water and shade is critical to predict the future impact of increasing drought frequencies on plant communities across many arid ecosystems of the world. In this study, we used an experimental field approach to assess how different light (15%, 75%, and 95%) and water (natural rainfall (NR), NR +50 mm, NR +100 mm) levels affect seedling survival and growth of four Atacama Desert shrub species (Calliandra chilensis, Encella canescens, Proustia cuneifolia, and Senna cumingii). We...
Tipo: Journal article
Palavras-chave: Seedling establishment; Facilitation; Drought; Atacama Desert.
Ano: 2014
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2014000100025

Substrates of Mauritia flexuosa and wastewater from pig farming on growth and quality in seedlings of Acacia mangium
Provedor de dados: 124
Autores: Araújo,Emanuel França; Arauco,Adriana Miranda de Santana; Dias,Bruna Anair Souto; Silva,Gustavo Cassiano da; Nóbrega,Rafaela Simão Abrahão.
ABSTRACT Sustainable alternatives should be adopted to minimise the negative environmental impacts of agricultural activities. The use of wastewater as well as organic waste, from agricultural activities or found naturally, such as the decomposed stems of the Buriti palm (Mauritia flexuosa), can be a sustainable alternative in the production of seedlings for the reforestation of areas in the process of degradation or desertification, common in the State of Piauí, Brazil. The aim of this study was to evaluate growth and quality in seedlings of Acacia mangium Willd grown in substrates with different proportions of decomposed stems of Mauritia flexuosa (DSB), and irrigated with wastewater from pig farming (WPF). The experimental design was completely...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seedling propagation; Organic waste; Natural nodulation.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000200298

Calcium anacardate in the diet of broiler chickens: the effects on growth and bone quality
Provedor de dados: 124
Autores: Cruz,Carlos Eduardo Braga; Freitas,Ednardo Rodrigues; Aguiar,Germana Costa; Braz,Nádia de Melo; Trevisan,Maria Tereza Salles.
ABSTRACT The aim of this research was to evaluate the effects of adding calcium anacardate (ACa) as a source of anacardic acid to the diet of broiler chickens on the growth, quality and bone composition of the femur and tibia of the birds. A total of 840 male chicks, one day old, were kept in a completely randomised experimental design, with six treatments and seven replications of 20 birds. The following treatments were applied: a diet without the addition of growth promoter (GP), a diet with added GP and other diets with no GP and the addition of ACa at levels of 0.25, 0.50, 0.75 and 1%. The variables under analysis were the weight, length, diameter, Seedor index, and the resistance and deformity of the left femur and tibia of the birds. For bone...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Organic acid; Bone development; Femur; Tibia.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000200329

Biofiltration, growth and body composition of oyster Crassostrea rhizophorae in effluents from shrimp Litopenaeus vannamei1
Provedor de dados: 124
Autores: Azevedo,Rafael Vieira de; Tonini,William Cristiane Telles; Santos,Marcel José Martins dos; Braga,Luís Gustavo Tavares.
The objective of this study was to use oyster as biofilter to improve the quality of effluent from shrimp farming and to assess its growth performance and body composition. It was distributed 1,080 oysters into lanterns in fiberglass tanks (170 L) in a completely randomized design with three treatments (0, 60 and 120 oysters) and six replicates. It was used the effluent from the sedimentation tank. It was measured weekly: temperature, salinity, dissolved oxygen and pH, and it was analyzed ammonia-N, nitrite-N, nitrate-N, orthophosphate-P, suspended solids and chlorophyll-α of the input effluent. The control tanks (without oysters) were more efficient at removing ammonia-N, nitrite-N, nitrate-N and orthophosphate-P. The tanks containing oysters were more...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture; Integrated system; Performance.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902015000100193

Cytokinins in the in vitro multiplication and analysis of the volatile fraction of Hyptis marrubioides
Provedor de dados: 124
Autores: Rodrigues,Mariane Aparecida; Bertolucci,Suzan Kelly Vilela; Alvarenga,Ivan Caldeira Almeida; Silva,Sâmia Torres; Carvalho,Alexandre Alves de; Pinto,José Eduardo Brasil Pereira.
ABSTRACT The aim of this study was to evaluate different concentrations of two cytokinins in the in vitro propagation of the medicinal plant Hyptis marrubioides Epl. and to analyse the volatile fraction of the compounds. Nodal segments of plants were inoculated onto Murashige and Skoog (MS) solid medium with different concentrations of benzylaminopurine (BAP) or tidiazuron (TDZ) under a 16/8 h light/dark cycle at 25 ± 2 °C. After 45 days growth, the plants were evaluated for the number and length of the shoots and for shoot dry matter. The volatile constituents were analysed by headspace-GC/MS. The greatest number of shoots was obtained with 1.0 mg L-1 TDZ in the MS medium. The greatest values ​​for shoot length and dry matter were obtained with BAP....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth regulators; Proliferation; Terpenes; Medicinal plant; Hyptis smarrubioides.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000100090

Macronutrients uptake rate and biomass partitioning during early growth of Jatropha plants
Provedor de dados: 124
Autores: Santos,Elcio Ferreira; Macedo,Fernando Giovannetti; Zanchim,Bruno José; Camacho,Marcos Antonio; Lavres,José.
ABSTRACT Jatropha seeds oil can replace fossil fuels, but the nutrient supply management for this species is not fully described. The objective with this work was to establish curves of macronutrient (nitrogen - N; phosphorus - P; potassium - K; calcium - Ca; magnesium - Mg and sulfur - S) content in leaves, stem and roots, and to evaluate the relative growth rate (RGR), absolute growth rate (AGR) and the foliar mass ratio (FMR). The experiment was arranged in completely randomized design with five replications. Jatropha plants were grown in nutrient solution and collected at intervals of 14 up to 119 days after treatments started. The period of highest uptake of nutrients occurred from 7 to 35 days after treatments started, which coincides with highest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Jatropha curcas; Nutrient uptake; Relative growth rate; Macronutrients uptake curves; Macronutrient uptake rates.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000400565

Dynamic of dominance, growth and bromatology of Eragrostis plana Nees in secondary vegetation area
Provedor de dados: 124
Autores: Scheffer-Basso,Simone Meredith; Cecchin,Kalinca; Favaretto,Adriana.
ABSTRACT The objective of this work was to evaluate the dominance, growth and bromatology of tough lovegrass or 'annoni' grass (Eragrostis plana) in secondary vegetation area. The evaluations were carried out at 23, 45, 64, 86, 111, 132, 153, and 174 days of growth after a mowing. The tough lovegrass was the dominant species on the area, accounting for 76 to 90% of biomass. There was a linear increase for leaf (9.8 kg DM ha-1 day-1) and total dry mass (16.9 kg DM ha-1 day-1) of the tough lovegrass. During the 111 days of the vegetative stage, the biomass was composed only of leaves, and the flowering started at 132 days. At 174 days, the tough lovegrass accumulated about 4,000 kg DM ha-1, 650 kg DM ha-1 of which was composed of inflorescences. The growth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crude Protein; Dry matter; Fiber; Leaf area index; Leaf area ratio.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902016000300582

Nonlinear models to describe height and diameter of sugarcane RB92579 variety
Provedor de dados: 124
Autores: Jane,Sérgio Alberto; Fernandes,Felipe Augusto; Muniz,Joel Augusto; Fernandes,Tales Jesus.
ABSTRACT Brazil is the world’s largest sugarcane producer (Saccharum spp.), followed by India and China. In 2019, Brazil produced 642.7 million tons of sugarcane, having collected 1.44 billion and 983.52 million dollars from sugar and ethanol exports, respectively. For crop management, it is important to monitor plant growth, duration of growth phases and point of physiological maturation. The aim of this study was to evaluate the fit of nonlinear Logistic, Gompertz, Brody and von Bertalanffy models to the height and diameter growth of ratoon cane stalk RB92579 variety, considering age in days. The parameters of models were estimated using R software routines, applying the least squares method and the iterative Gauss-Newton process. The adjustment of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth curves; Logistic; Gompertz.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000400402

Water-retaining polymer and seedling type when planting irrigated coffee
Provedor de dados: 124
Autores: Souza,Antonio Jackson Jesus; Guimarães,Rubens José; Dominghetti,Anderson William; Scalco,Myriane Stella; Rezende,Tiago Teruel.
ABSTRACT The aim of this work was to evaluate the use of a water-retaining polymer on the initial growth of coffee plants for different levels of irrigation and types of seedling. The experiment was set up in pots with a clayey soil, in a greenhouse of the Sector for Coffee Production of the Federal University of Lavras, Brazil. The experiment was arranged in a randomised block design into sub-lots with three replications, giving a total of 48 experimental units. Four levels of irrigation (25%, 50%, 75% and 100% of the available water) were randomly assigned to the lots; the type of seedling (grown in bags or tubes) were randomly assigned to the sub-lots, and the use or not of the water-retaining polymer randomly assigned to the sub-sub-lots. In the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seedling containers; Implementation; Coffea arabica L.; Hydrogel.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902016000200334

Growth of seedlings in banana plant cv. Prata Catarina micropropagated in organic substrates
Provedor de dados: 22
Autores: Cardoso, Edvaldo Renner da Costa; Silva, Francisco Nildo da; Maia, Sandra Sely Silveira; Hernandez, Fernando Felipe Ferreyra; Santos, Rosemery Alesandra Firmino dos; Nazareno, Lailla Sabrina Queiroz.
In commercial bananas there is an increasing increase for seedlings of high genetic quality and free of pathogens; thus, the use of micropropagation has been increasingly encouraged for the production of seedlings. However, the success of establishing these seedlings in the environment depends on several factors, in which, the substrate has a relevant role. The objective of this study was to evaluate the growth of micropropagated banana seedlings under the influence of different formulations of substrates based on soil, bovine manure and vegetable ash for organic production system. The experiment was carried out on a certified rural property under an organic production system in the municipality of Palmácia (CE). The experimental design used was completely...
Tipo: Info:eu-repo/semantics/article
Ano: 2019
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/22283

Growth and vegetative development of soybean plants in soil type Concrectionary Petric Plinthosol
Provedor de dados: 22
Autores: Nikkel, Marcio; Lima, Saulo de Oliveira.
The central-north of Brazil is a region with strong presence of concrectionary soil, whose supposed disadvantages from the agronomic point of view, do not prevent their use in agriculture. However, more in-depth information about the behavior of crops of agricultural interest cultivated in this type of soil is few. Due to the observation of agricultural stands in this type of soil, it was hypothesized that plinthite ironstones concretions negatively interfere in the development of crops of agro-economic interest. The objective was to verify the growth and development of soybean cultivated in soil with the presence and absence of plinthite ironstones. Concretionary Petric Plinthosol were collected in the 0-0,20 m layer and part of the soil was sieved so...
Tipo: Info:eu-repo/semantics/article
Ano: 2019
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/22452

Overcoming dormancy in seeds of biribá and seedling growth
Provedor de dados: 22
Autores: Coutinho, Pablo Wenderson Ribeiro; Villa, Fabíola; Pires, Ely; Siqueira, Hingrit Mazurek.
The study aimed to evaluate the influence of overcoming dormancy of seeds of biribá through chemical and mechanical method in the emergence and initial growth of seedlings. The fruits were acquired from a mother plant in Cascavel (PR).  The experimental design was a completely randomized in factorial 2 x 3, with four repetition, containing 25 seeds each repetition. The first factor was constituted of scarification with sandpaper n.80 of the two sides opposite the micropyle (with and without), the second factor was the soaking for 24 h (water, GA3 in the concentration of 1000 mg L-1 and without soaking). The count was performed for up to 60 days, being calculated the emergence speed index, average time of emergence and speed of emergence. When the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rollinia mucosa (Jacq.) Baill; Emergence; Sexual propagation; Plant growth regulator.
Ano: 2018
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/19647

Production of streptomycete inoculum in sterilized rice
Provedor de dados: 63
Autores: Soares,Ana Cristina Fermino; Sousa,Carla da Silva; Garrido,Marlon da Silva; Perez,Jane Oliveira.
Actinomycetes are important plant disease control and growth promotion agents, which makes it necessary to develop technology to produce large quantities of inoculum for green-house and field work. The present study had the objective of evaluating the growth of several isolates of Streptomyces in sterile rice for inoculum production. The sterile rice was inoculated with isolates of S. thermotolerans, S. griseus subsp. griseus, Streptomyces sp. N0035, S. purpurascens, and Streptomyces sp., and incubated at 28 ± 2ºC. Five days after its inoculation, mycelial growth and sporulation was observed for all Streptomyces isolates on the rice grains. Twelve days after incubation, the colonized rice was transferred to envelopes of dark brown paper and let to dry in...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Actinomycetes; Biological control; Growth substrates.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000600013

Growth, development, and fertilizer-15N recovery by the coffee plant
Provedor de dados: 63
Autores: Fenilli,Tatiele Anete Bergamo; Reichardt,Klaus; Dourado-Neto,Durval; Trivelin,Paulo César Ocheuze; Favarin,José Laercio; Costa,Flávio Murilo Pereira da; Bacchi,Osny Oliveira Santos.
The relationship between growth and fertilizer nitrogen recovery by perenial crops such as coffee is poorly understood and improved understanding of such relations is important for the establishment of rational crop management practices. In order to characterize the growth of a typical coffee crop in Brazil and quantify the recovery of 15N labeled ammonium sulfate, and improve information for fertilizer management practices this study presents results for two consecutive cropping years, fertilized with 280 and 350 kg ha-1 of N, respectively, applied in four splittings, using five replicates. Shoot dry matter accumulation was evaluated every 60 days, separating plants into branches, leaves and fruits. Labeled sub-plots were used to evaluate N-total and 15N...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea arabica L.; Stable isotope; Nitrogen; Dry matter accumulation; 15N.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000500012

Growth of Bauhinia forficata Link, Curcuma zedoaria Roscoe and Phaseolus vulgaris L. cell suspension cultures with carbon sources
Provedor de dados: 63
Autores: Mello,Marcia Ometto; Dias,Carlos Tadeu Santos; Amaral,Antônio Francisco Campos; Melo,Murilo.
Cell suspension cultures of Bauhinia forficata Link, Curcuma zedoaria Roscoe and Phaseolus vulgaris L. were used to test plant ability to utilize an alternative to sucrose as carbon source and energy for growth. Glycerol, sorbitol and galactose were the alternative carbon sources tested. Cell suspension cultures established on liquid medium containing sucrose were transferred to culture medium supplemented with sucrose or glycerol, or sorbitol, or galactose as the sole carbon source. Fresh and dry weight increasing and protein content showed marked differences among the different carbon sources used. Sucrose was the best carbon source for all the three plant species tested. Galactose and glycerol promoted slow or no growth of the three studied species....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sucrose; Glycerol; Sorbitol; Galactose; Tissue culture.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162001000300007

Attributes related to seasonal herbage growth in white clover
Provedor de dados: 63
Autores: Scheneiter,Omar; Rosso,Beatriz; Corletto,Mauro.
When breeding temperate forage species is investigated, some attributes such as herbage accumulation and seasonal growth patterns have to be considered. To modify some of these traits, knowledge of the detailed process might be useful. In order to evaluate seasonal growth of contrasting white clover populations an experiment was carried out. Treatments were five cultivars and three local populations collected in Argentina. Weekly measures were taken during each season to calculate leaf appearance and flower appearance rates, stolon growing rate and dry matter (DM) net accumulation. Different germplasm of this species have different mechanisms for DM accumulation. Leaf size, more than leaf appearance rate, was the variable with most differences among...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trifolium repens L.; Germplasm; Leaves; Inflorescences; Stolon growth.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000100003

Emergence and growth of corn and soybean under saline stress
Provedor de dados: 63
Autores: Blanco,Flávio Favaro; Folegatti,Marcos Vinícius; Gheyi,Hans Raj; Fernandes,Pedro Dantas.
Emergence and seedling growth may be severely affected by salinity, mainly for sensitive crops. The objective of the present study was to verify the tolerance of corn and soybean to the irrigation water salinity (ECi) during the emergence and initial development stages. Seeds of corn, hybrid 'AG-6690', and soybean, cv. 'Conquista', were sown in pots containing material from a sandy-loam soil and irrigated with water of increasing salinity levels, from 0.3 to 5.9 dS m-1, giving nine levels of ECi obtained by the addition of an equivalent proportion of sodium and calcium chloride, except for ECi = 0.3 dS m-1 (tap water). Emergence of corn was not affected by salinity but seedling development was reduced for ECi above 1.5 dS m-1. Emergence and growth of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Glycine max; Salinity tolerance; Soil solution.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000500001

Ecophysiological and anatomical changes due to uptake and accumulation of heavy metal in Brachiaria decumbens
Provedor de dados: 63
Autores: Gomes,Marcelo Pedrosa; Marques,Teresa Cristina Lara Lanza de Sá e Melo; Nogueira,Mariana de Oliveira Gonçalves; Castro,Evaristo Mauro de; Soares,Ângela Maria.
The growth and developmental characteristics of grasses and their high biodiversity make such plants suitable for remediation of areas contaminated by heavy metals. Nevertheless, heavy metal toxic effect on the plants may cause alteration in their metabolic pathways, such as photosynthesis, respiration, and growth, modifying plant anatomy. This work aimed to evaluate the effect of levels of soil contamination (0, 7.5 % and 15 % m³ m-3) on biomass production, on photosynthetic characteristics and on anatomical changes in roots and leaves of brachiaria (Brachiaria decumbens Stapf.). After seeds were planted, seedlings were uprooted and replanted in vases containing soil at different contamination levels, being left to rest for 120 days. At the end of that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Contaminated soil; Chlorophyll; Growth; Potencial photosynthesis.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000500009

Rhizobia and other legume nodule bacteria richness in brazilian Araucaria angustifolia forest
Provedor de dados: 63
Autores: Lammel,Daniel Renato; Brancalion,Pedro Henrique Santin; Dias,Carlos Tadeu Santos; Cardoso,Elke Jurandy Bran Nogueira.
The Araucaria Forest is a sub-type of the Atlantic Forest, dominated by Araucaria angustifolia, which is considered an endangered species. The understory has a high diversity of plant species, including several legumes. Many leguminous plants nodulate with rhizobia and fix atmospheric nitrogen, contributing to forest sustainability. This work aimed at bacteria isolation and phenotypic characterization from the root nodules of legumes occurring in Araucaria Forests, at Campos do Jordão State Park, Brazil. Nodule bacteria were isolated in YMA growth media and the obtained colonies were classified according to their growth characteristics (growth rate, color, extra cellular polysaccharide production and pH change of the medium). Data were analyzed by cluster...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: N fixation; Ombrophilous mixed forest; Symbiotic bacteria; Phenotypical characterization.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000400011

Field performance of "marsh seedless" grapefruit on trifoliate orange inoculated with viroids in Brazil
Provedor de dados: 63
Autores: Stuchi,Eduardo Sanches; Silva,Simone Rodrigues da; Donadio,Luiz Carlos; Sempionato,Otávio Ricardo; Reiff,Eduardo Toller.
Some viroids reduce citrus tree growth and may be used for tree size control aiming the establishment of orchards with close tree spacing that may provide higher productivity than conventional ones. To study the effects of citrus viroids inoculation on vegetative growth, yield and fruit quality of 'Marsh Seedless' grapefruit (Citrus paradisi Macf.) grafted on trifoliate orange [Poncirus trifoliata (L.) Raf.], an experiment was set up in January 1991, in Bebedouro, São Paulo State, Brazil. The experimental design was randomized blocks with four treatments with two plants per plot: viroid isolates Citrus Exocortis Viroid (CEVd) + Hop stunt viroid (HSVd - CVd-II, a non cachexia variant) + Citrus III viroid (CVd-III) and Hop stunt viroid (HSVd - CVd-II, a non...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth; Yield; Fruit quality; Exocortis; Dwarfing.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000600004

Growth and sporulation of Metarhizium flavoviride var. Flavoviride on culture media and lighting regimes
Provedor de dados: 63
Autores: Onofre,Sideney Becker; Miniuk,Cindia Mara; Barros,Neiva Monteiro de; Azevedo,João Lúcio.
Entomopathogenic fungi from the genus Metarhizium are largely used for the biological control of agricultural pests by conidia spreading on the field. Although conidia production is well studied in M. anisopliae, only few research studies were done in M. flavoviride. The present work was carried out alming to evaluate the Mycelial growth and sporulation of the entomopathogenic fungus Metarhizium flavoviride var. flavoviride growing at 27 ± 2°C on Potato-dextrose-agar (PDA), Czapek-agar (CZP) and a complete agar medium (CM) under three lighting regimes, (continuous illumination, light/dark cycle and an black light/dark cycle) were investigated. A completely randomized 3 × 3 (culture media × lighting regime) factorial design with four replicates was used....
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Metarhizium flavoviride; Mycelial growth; Culture media; Lighting regimes.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162001000300026

Genetic variability for girth growth and rubber yield in Hevea brasiliensis
Provedor de dados: 63
Autores: Gonçalves,Paulo de Souza; Silva,Marcelo de Almeida; Gouvêa,Ligia Regina Lima; Scaloppi Junior,Erivaldo José.
Basic knowledge of genetic characteristics of populations is necessary to conduct effective breeding and selection. The objective of this paper is describing the genetic variation of rubber yield and the correlation with other traits, and estimating the genetic parameters for girth growth and total number of latex vessels. Sixty seven clones of Hevea brasiliensis (Willd. ex Adr. de Juss.) Muell.-Arg. were tested at five sites during 10 years. Characters girth growth at panel opening and rubber yield, showed broad sense heritability on plot mean level, from 0.32 to 0.66 and 0.59 to 0.92, respectively. Predicted genetic gains equal to 0.73 cm and 0.79 g increase respectively on girth and yield in the opening panel and mature phases seems realistic, even with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rubber tree; Heritability; Genetic correlations; Genotype-environment interaction.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000300006

Plant bioassays to assess toxicity of textile sludge compost
Provedor de dados: 63
Autores: Araújo,Ademir Sérgio Ferreira; Monteiro,Regina Teresa Rosim.
Composting of industrial wastes is increasing because of recycling requirements set on organic wastes. The evaluation of toxicity of these wastes by biological testing is therefore extremely important for screening the suitability of waste for land application. The toxicity of a textile sludge compost was investigated using seed germination and plant growth bioassays using soybean and wheat. Compost samples were mixed with water (seed germination bioassay) or nutrient solution (plant growth bioassay) at concentrations of 0, 19, 38, 76 and 152 g L-1. No negative effects were observed after five days of compost water-extract in relation to soybean and wheat seed germination. After fifteen days, under a hydroponics system, plant growth had harmful effects of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phytotoxicity; Seed germination; Solid residue; Hydroponics.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000300013

Low carbon/nitrogen ratio increases laccase production from basidiomycetes in solid substrate cultivation
Provedor de dados: 63
Autores: D'Agostini,Érica Clarissa; Mantovani,Talita Rafaele D'Agostini; Valle,Juliana Silveira do; Paccola-Meirelles,Luzia Doretto; Colauto,Nelson Barros; Linde,Giani Andrea.
Basidiomycetes are laccase producers used for hydrolysis of lignocellulosic byproducts in fermentative processes and could be used on biofuel production or ruminant feeding. The objective of this study was to evaluate the effect of concentrations of non-protein nitrogen sources on laccase production and mycelial growth of Pleurotus ostreatus, Lentinula edodes and Agaricus blazei. The fungi were grown on soybean hulls to which urea (U), ammonium sulfate (AS) or mixture of AS:U (1:1) were added to achieve carbon/nitrogen (C/N) ratios of 5, 15, 20 or 30. The average longitudinal mycelial growth was measured and laccase activity was determined by the oxidation of 2,2'-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid. Higher C/N ratios increased mycelial growth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Industrial byproduct; Lignocellulolytic; Enzyme; Lignolytic; Soybean hull.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000300004

Growth and survival of pink shrimp (Farfantepenaeus paulensis) postlarve in cages and pen enclosures
Provedor de dados: 63
Autores: Vaz,Luciano Jensen; Wasielesky Jr.,Wilson; Cavalli,Ronaldo Olivera; Peixoto,Silvio; Santos,Marcos Henrique Silva; Ballester,Eduardo.
Technology for the culture of the pink shrimp Farfantepenaeus paulensis in low-cost cages and pen enclosures was developed together with artisanal fishermen of the Patos Lagoon estuary, southern Brazil. Although the production of postlarvae (PL) under laboratory conditions is well documented, survival and growth during the nursery phase cages and pen enclosures in the nature has not yet been analyzed. Therefore, the present study compared survival and growth of F. paulensis postlarvae reared either in cages or pens. Six cages (2.0 ´ 2.0 ´ 1.4 m) of PVC-coated polyester with a mesh size of 1.5 mm were stocked with 800 PL26 each. To assess the effect of the substrate, a 10 cm layer of sand was added to three of these cages to simulate a pen enclosure. No...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Penaeidae; Aquaculture; Shrimp farming; Nursery.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000300016

Bioprospecting and selection of growth-promoting bacteria for Cymbidium sp. orchids
Provedor de dados: 63
Autores: Gontijo,Júlia Brandão; Andrade,Gracielle Vidal Silva; Baldotto,Marihus Altoé; Baldotto,Lílian Estrela Borges.
ABSTRACT: Inoculants containing bacteria which promote growth in plants can increase productivity and both the economic and the environmental cost in plant crop systems. Similarly, in the flower and ornamental plant sector, the use of diazotrophic bacteria is a promising approach for improving orchid propagation from tissue culture to the ex vitro environment. We isolated diazotrophic bacteria from the roots and leaves of Cymbidium sp. The isolates were used to inoculate Cymbidium sp. plantlets during acclimatization in the nursery. After 150 days, plants were collected and their morphological and nutritional characteristics assessed. Eight bacterial strains were isolated containing traits that promote plant growth: Bacillus thuringiensis, Burkholderia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Orchidaceae; Diazotrophic bacteria; Phosphate-solubilizing bacteria; Endophytic bacteria; Acclimatization.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000500368

Gorgonian Seafan
Provedor de dados: 23
Autores: Curry, Rob.
On seabed, possibly feeding.
Tipo: Image
Palavras-chave: Phylum Cnidaria (Cnidarians).
Ano: 2009
URL: http://archive.serpentproject.com/1604/

Gorgonian Seafan
Provedor de dados: 23
Autores: Curry, Rob.
On seabed, possibly feeding.
Tipo: Image
Palavras-chave: Phylum Cnidaria (Cnidarians).
Ano: 2009
URL: http://archive.serpentproject.com/1605/

Cup Coral (probably dead)
Provedor de dados: 23
Autores: Curry, Rob.
On the seabed.
Tipo: Image
Palavras-chave: Scleractinia (Stony corals).
Ano: 2009
URL: http://archive.serpentproject.com/1642/

Impact of drought during early growth on cassava starch quality
Provedor de dados: 106
Autores: Sriroth, K.; Piyachomkwan, K.; Chotineeranat, S.; Chollakup, R.; Santisopasri, V.; Oates, C.G.
Palavras-chave: Cassava; Starch.
Ano: 1998
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4835

Studies on mycorrhiza in corn
Provedor de dados: 106
Autores: Poonpilai Suwanarit; Yanee Tretanuchai; Charan Chettanachitara; Amara Chantanao.
4 tables
Palavras-chave: Corn; Maize; Mycorrhiza; Roots; Root culture; Growth; ข้าวโพด; ไมคอร์ไรซา; การเพาะเลี้ยงเนื้อเยื่อราก.
Ano: 1981
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4069

Effect of vitamin C levels on growth performance, feed conversion rates, survival rates, and histopathology of gill, liver, and kidney of nile tilapia, Oreochromis niloticus
Provedor de dados: 106
Autores: Wutiporn  Phromkunthong.
Tipo: Research
Palavras-chave: Tilapia; Fishes  Feeding and feeds; Fishes  Physiology.
Ano: 1993
URL: http://kb.psu.ac.th/psukb/handle/2553/3656

Effects of N and P fertilizers on the behaviour of baby corn
Provedor de dados: 106
Autores: Amnat Suwanarit; Sodsai Changsaluk.
10 ill.
Palavras-chave: Corn; Maize; Baby corn; NP fertilizers; Corn growth; ข้าวโพดฝักอ่อน; การเจริญเติบโต; ผลผลิต; ปุ๋ยไนโตรเจน; ปุ๋ยฟอสฟอรัส.
Ano: 1987
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4251

การลดโรคกาบใบแห้งและการส่งเสริมการเจริญเติบโตของข้าวโดยใช้แบคทีเรียปฏิปักษ์
Provedor de dados: 106
Autores: Patcharaporn Thampiban-udom; Chiradej Chamsawarng; Wanwilai Intanoo.
Rhizobacteria were isolated from rhizosphere soil of rice plants grown in Kanchanaburi Provience. All bacterial isolates were evaluated for the efficacy to inhibit mycerial growth of Rhizoctonia solani, a causal agent of sheath blight on rice by dual culture test on potato dextrose agar (PDA). Six gram positive and three gram negative bacterial isolates effectively inhibited mycerial growth of R. solani by 30.62-75.00 % as compared to the control. Selected bacteria were further tested for the efficacy to promote growth of rice (Chai Nat 1) seedling by seed soaking in bacterial cell suspension (108 CFU/ml) for 24 hr. Soaked seed were incubated for 24 hr before sowing. The results indicated that isolate RRK1 was the most promising isolates that provided the...
Tipo: PhysicalObject
Palavras-chave: Biological control; Antagonistic bacteria; Rice disease; Bacterial pesticides; การควบคุมโรคพืชโดยชีววิธี; แบคทีเรียปฏิปักษ์; โรคข้าว; สารป้องกันกำจัดศัตรูพืชจากแบคทีเรีย; ข้าว.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5435

ผลของความเข้มแสงต่อการเจริญเติบโต และการสะสมการแอนโทไซยานินในใบข้าวเหนียวดำ
Provedor de dados: 106
Autores: Kanyakarn Poonsiri; Kanlaya Kongngaon.
Light intensity is an important factor affected rice growth and productivity. A comparative study on the effects of light intensity were investigated in three cultivars of black glutinous rice No.19, 27 and 51. Seeds were hydroponically grown for 30 days then divided into 3 groups: grow under natural light condition (300 Klux) and under low light condition 2 levels (3 and 1 Klux) using shaded net. The effect of light intensity on four growth-stages including; seedling, tillering, heading and maturity was observed. The results showed that the low light intensity caused decrease fresh weight, dry weight and anthocyanin contents in all cultivars. Moreover, the heading stage had higher anthocyanin content than other stages. The No. 51 had the highest level of...
Tipo: PhysicalObject
Palavras-chave: Black glutinous rice; Light intensity; Anthocyanin; ข้าวเหนียวดำ; ความเข้มแสง; แอนโทไซยานิน; การเจริญเติบโต; ผลผลิต.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5417

Agronomy
Provedor de dados: 106
9 tables
Palavras-chave: Corn; Maize; Sorghum; Fertilizers; Varieties; Growth; Yields; Chainat paddy field; ข้าวโพด; ข้าวฟ่าง; การเพาะปลูก; การเขตกรรม.
Ano: 1974
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3796

Regional testing
Provedor de dados: 106
1 ill., 23 tables
Palavras-chave: Corn; Maize; Sorghum; Variety testing; Regional testing; Varieties; Variety trials; Growth; Yields; ข้าวโพด; ข้าวฟ่าง; การทดสอบพันธุ์; การทดสอบพันธุ์ในหลายท้องที่.
Ano: 1974
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3797

Regional sorghum variety test
Provedor de dados: 106
Autores: Chalaw Chawanapong; Chawana Boonreung; Somrak Noradechanon; Prakob Jan-aram.
4 tables
Palavras-chave: Sorghum; Regional test; Variety test; Growth; Yields; ข้าวฟ่าง; การทดสอบพันธุ์ในหลายท้องที่; การทดสอบสายพันธุ์.
Ano: 1975
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3833

Corn breeding and genetics
Provedor de dados: 106
Autores: Ampol Senanarong.
28 tables
Palavras-chave: Corn; Maize; Plant breeding; Genetics; Variety trials; Selection; Downy mildew; Disease resistance; Growth; Yields; Quality; ข้าวโพด; การปรับปรุงพันธุ์.
Ano: 1975
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3825

อิทธิพลของเวลาปลูกต่อการเจริญเติบโตและผลผลิตของถั่วเหลือง เมื่อปลูกในภาคใต้ของประเทศไทย
Provedor de dados: 106
Autores: วัลลภ สันติประชา; นที เนียมศรีจันทร์; ขวัญจิตร ศศิปรียจันทร์.
Tipo: งานวิจัย
Palavras-chave: ถั่วเหลือง.
Ano: 2012
URL: http://kb.psu.ac.th/psukb/handle/2553/5280

Sweet corn breeding
Provedor de dados: 106
Autores: Tavat Lavapauraya.
3 tables
Palavras-chave: Corn; Maize; Sweet corn; Plant breeding; Selection; Variety trials; Growth; Yields; ข้าวโพด; ข้าวโพดหวาน; การปรับปรุงพันธุ์; โรคราน้ำค้าง; รสชาติ; ผลผลิตฝักสด.
Ano: 1975
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3824

อิทธิพลของเวลาปลูกต่อการเจริญเติบโตและผลผลิตของถั่วเหลือง เมื่อปลูกในภาคใต้ของประเทศไทย
Provedor de dados: 106
Autores: วัลลภ สันติประชา; นที เนียมศรีจันทร์; ขวัญจิตร ศศิปรียจันทร์.
Tipo: งานวิจัย
Palavras-chave: ถั่วเหลือง.
Ano: 2012
URL: http://kb.psu.ac.th/psukb/handle/2553/5280

International training
Provedor de dados: 106
Autores: Smeltzer, Dale G.
9 tables
Palavras-chave: Corn; Maize; Mungbeans; Training programs; Variety trials; Mixed cropping; Nitrogen fertilizers; Growth; Yields; ข้าวโพด; โครงการฝึกอบรม.
Ano: 1976
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3885

Endomycorrhizal effects on phosphorus uptake and yield increasing in corn
Provedor de dados: 106
Autores: Omsub Nopamornbodi; Yenchai Vasuvat.
4 tables
Palavras-chave: Corn; Maize; Endomycorrhiza; Phosphate fertilizers; Phosphorus uptake; Growth; ข้าวโพด; เอนโดไมคอร์ไรซา; การเจริญเติบโต; การดูดใช้ฟอสฟอรัส.
Ano: 1980
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4020

Sorghum breeding
Provedor de dados: 106
Autores: Aran Patanothai; Hasachai Boonjoong; Sutiporn Anansuchatkul; Kamol Lertrat.
16 tables
Palavras-chave: Sorghum; Plant breeding; Yield trials; Lines; Growth; Yields; ข้าวฟ่าง; การทดสอบผลผลิต; การประเมินสายพันธุ์.
Ano: 1975
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3821

Effect of rate and time of application of phosphorus and nitrogen on corn
Provedor de dados: 106
Autores: Sibawihi.
1 table
Palavras-chave: Corn; Maize; Phosphorus fertilizers; Nitrogen fertilizers; Application rates; Timing; Growth; Yields; ข้าวโพด; ปุ๋ยฟอสฟอรัส; ปุ๋ยไนโตรเจน.
Ano: 1971
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3779

Effect of environment on photosynthesis by corn
Provedor de dados: 106
Autores: Musgrave, R.B.
6 ill.
Palavras-chave: Corn; Maize; Photosynthesis; Environment; Growth rate; ข้าวโพด; การสังเคราะห์แสง; อัตราการเจริญเติบโต.
Ano: 1964
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3743

Physiological processes to understand genotype × environment interactions in maize silking dynamics
Provedor de dados: 26
Autores: Borrás, L.; Westgate, M.E.; Astini, J.P.
Variation in maize yield across environments often reflects genotype-specific responses in crop-flowering dynamics. The most widely observed effect is the temporal separation of male (anthesis) and female (silking) floral maturity, referred to as the anthesis–silking interval (ASI). Many studies have shown that maize yield also is a function of crop growth rate around flowering. At present, however, the relationship between growth rate and flowering dynamics is not fully understood. In this chapter, we present a conceptual basis and experimental approach for quantifying and analysing maize female flowering responses to variation in plant growth. We show how this approach can be applied to resolve contrasting genotypic behaviour under a range of...
Tipo: Conference proceedings
Ano: 2007
URL: http://library.wur.nl/ojs/index.php/frontis/article/view/1299

Crescimento de Aegla platensis Schmitt em ambiente natural (Crustacea, Decapoda, Aeglidae)
Provedor de dados: 104
Autores: Bueno,Alessandra Angélica de Pádua; Bond-Buckup,Georgina; Buckup,Ludwig.
The crustaceans of the genus Aegla Leach, 1820 are found in streams, rivers and lakes from Franca, São Paulo, Brazil (20º60'S, 47º40'W), to Ilha Madre de Dios, Chile (50º01'10"S, 75º18'45"W) in South America. The growth and cheliped asymmetry of Aegla platensis Schmitt, 1942 were analyzed. The animals were collected from July 1997 to September 1998 at Arroio do Mineiro, Taquara, Rio Grande do Sul, Brazil (29º46'S, 50º53"W). The sex, length, width of the carapace and the total weight of the crab were registered. And after that, the animals were returned to the stream. In the statistical analysis von Bertalanffy's model was used. The growth curves in length (mm) of males and females are described, respectively, by the following equations: L1 = 17.39 [1 - e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crustacea; Decapoda; Aegla platensis; Growth.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000100006

The influence of diet and isolation on growth and survival in the land snail Bulimulus tenuissimus (Mollusca: Bulimulidae) in laboratory
Provedor de dados: 104
Autores: Meireles,Liliane M. O.; Silva,Lidiane C.; Junqueira,Flávia O.; Bessa,Elisabeth C. A.
Feed influences directly growth and survival in land snails. Here, we investigate the influence of diet and isolation on growth and survival in Bulimulus tenuissimus (d'Orbigny, 1835) in the laboratory. Animals were maintained individually and in groups and three different types of diets: lettuce, ration and both lettuce and ration (mixed diet) for 210 days. Isolated animals, in all diet types, grew more rapidly than grouped animals. Also, snails fed with lettuce grew most slowly in isolated or grouped treatments. Within isolated or grouped treatments, growth rates were similar for the ration and the mixed diet. Mortality rate was higher in animals fed on lettuce only, in both density treatments. Thus, diet and density are important components of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diet; Feed; Land snail; Mortality.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752008000200010

Crescimento em Goniopsis cruentata (Latreille) (Crustacea, Brachyura, Grapsidae) em laboratório
Provedor de dados: 104
Autores: Silva,Zilanda de Souza; Oshiro,Lídia Miyako Yoshii.
The growth of the crab Goniospis cruentata (Latreille. 1803), was studied in the laboratory, through of the molt increment and intermolt period. A total of 86 crabs (48 males and 38 females) were collected in the ltacuruçá's Mangrove in Mangaratiba's county. Rio de Janeiro. The crabs were maintened in the laboratory in four 1000 l tanks, with continuous water circulation during fifteen months. They were fed each two days with pieces of fish and fruits. The crabs varied in size from 19.3 to 56.0 mm in males and 23.3 to 48.8 mm in females. The males presented until four molts during the experiment and the females until six molts. The molts oceurred during ali the months. The mean percentage of molt increment was 6.1 ± 2.7%, for both sexes and it decreased...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brachyura; Goniopsis cruentata; Growth; Molt increment; Intermolt period; Laboratory.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000300028

Idade e crescimento de Gymnogeophagus lacustris Reis &amp;amp; Malabarba, um Cichlidae endêmico da bacia hidrográfica do Rio Tramandaí, Rio Grande do Sul, Brasil
Provedor de dados: 104
Autores: Hartz,Sandra Maria; Bruschi Junior,Willi; Formehl,Márcio Vanini.
In the present study it was examined the age and growth of Gymnogeophagus lacustris Reis &amp;amp; Malabarba, 1988 in Caconde lagoon (Tramandaí River Basin). The specimens (1080 males and 267 females) were collected monthly, between July 1992 and June 1993. The growth curve in total length was obtained by von Bettalanffy expression and the weight curve through the dedutive method supported by the mathematical expressions of the length growth curve and the length/weight relationship. Formation of the annulli in scales ocurred between winter and spring, and the first anual ring appears when the animals are aproximately 1.5 years old. L∞ and W∞ obtained for males and females, were 206.6mm and 157.3g and 120.2mm and 30.2g, respectively, demonstrating a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gymnogeophagus; Growth; Coastal lagoon; Rio Grande do Sul; Brazil.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000300005

Maturation and growth curves of Macrobrachium Carcinus (Linnaeus) (Crustacea, Decapoda, Palaemonidae) from Ribeira de Iguape River, southern Brazil
Provedor de dados: 104
Autores: Valenti,Wagner C; Mello,Jeanette de T.C. de; Lobão,Vera L.
In this paper, female Macrobrachium carcinus (Linnaeus, 1758) maturation curve, weight/length relationship, length and weight growth curves were studied. Prawns were captured, by traps, in Ribeira de Iguape river (24ºS and 47ºW), southern Brazil. There were used 207 females. It was observed that M. carcinus presents several spawnings during its life cycle and reproductive period goes on, at least till six years old. Weight/length relationship can be represented for the equation W = 8.73 E-3 L3.28. Expressions obtained for length and weight growth curves are Lt = 21 .0 (1-e-0493t) and Wt= 190 (1-e-0493t)3.28. respectively. A symptotic maximum length and asymptotic maximum weight are nearly attained at six and eight years old, respectively.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crustacea; Macrobrachium; Maturation; Growth; Prawn.
Ano: 1994
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751994000400009

Ex situ potential conservation of ipecacuanha ( Psychotria ipecacuanha (Brot.) Stokes . ) , a critically endangered medicinal plant species
Provedor de dados: 109
Autores: Urrea Trujillo,Aura Inés; Botero Giraldo,Catalina; Naranjo Gómez,Esther Julia.
Abstract Psychotria ipecacuanha is a medicinal plant endangered in Colombia, due to the indiscriminate exploitation suffered several decades ago for its therapeutic importance. Its great medicinal value is due to emetine production and its derivatives, mainly in the roots. Given these concerns, the aim of this research was to evaluate different parameters for in vitro conservation of P. ipecacuanha by a limited plant growth, using as in vitro explants plant nodes. Plant growth response to 18, 23 and 25°C with and without addition to MS basal culture medium 15 and 30 gL-1 of mannitol osmotic regulator was evaluated. Registration of plant survival data (%), plant height (cm), plant development of axillary shoots, number of leaves, callus formation and vigour...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: In vitro conservation; Plant limited growth; Osmotic regulator; Recovery phase; Vigour.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122017000400598

Byrsonima crassifolia seedlings growth on ground basalt rock
Provedor de dados: 109
Autores: Ferreira-Melo,Valdinar; Keiko-Welter,Marina; Alves-Chagas,Edvan; Pereira-Uchôa,Sandra Cátia; da Silva-Siqueira,Raphael Henrique.
Abstract Ground basalt rock may represent a labile reservoir of nutrients, providing a low-cost, nutrient-rich substrate for seedling formation and plant growth. The study aimed to evaluate the development of a native plant murici [Byrsonima crassifolia (L.) H.B.K.] seedlings using two different application rates of ground basalt rock with two particles sizes. The experiment was performed in a greenhouse, in which treatments were arranged in a random block design with five replications in a factorial scheme (2 x 5 + 1), with five doses of finely ground basaltic rock (0.42; 1.04; 2.08; 4.17 and 8.33 g kg-1), two grain sizes (G1Ø &lt; 0.05 and G2 Ø &lt; 0.10 mm mesh), and a treatment with soil without rock powder addition (the control 0.0 g kg-1 of rock...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative fertilizers; Native fruit; Byrsonima crassifolia rocks for crops.
Ano: 2021
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122021000100007

Plant growth and yield of butter kale (Brassica olerácea L. var. acephala), as influenced by the combined application of bovine manure and rock powder
Provedor de dados: 109
Autores: Pereira,Micaela B.; Dias,Thiago J.; Lima,Neriane R.; Justino,Evandra S.; Oliveira,Daivyd S.; Martins-Veras,Mario L.
Abstract The supply of organic matter in soil of arid and semiarid in Brazilian regions is very import, as it allows to increase crop yields. However, there are few studies on alternative sources of fertilizer for vegetables. Therefore, the objective was to evaluate the effect of different doses of bovine manure and rock powder (RP) on growth characteristics, concentration of chlorophyll, and physiological indices and production of (B. oleracea L. var. acephala). The treatments were arranged in five randomized blocks in a factorial 4 x 4 reference doses of bovine manure (60, 120, 180 and 240 g pit-1) combined with doses of rock powder (6, 12, 18 and 24 g pit-1). Doses of bovine manure and rock powder of 180 and 18 g, respectively, increased the growth of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brassica oleracea; Agricultural fertilizers; Organic matter.
Ano: 2020
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122020000100038

Dendroecology of Macrolobium acaciifolium (Fabaceae) in Central Amazonian floodplain forests
Provedor de dados: 36
Autores: BATISTA,Eliane Silva; SCHÖNGART,Jochen.
ABSTRACT The forest dynamics in the Amazonian floodplains is strongly triggered by the flood pulse. Trees respond to unfavorable growth conditions during the flood period by cambial dormancy, which results in the formation of annual growth rings. We determined tree age and compared the mean annual rates of increase in the diameter of Macrolobium acaciifolium with hydrological and climatic factors in three regions of central Amazonian floodplain forest. A wood sample was obtained from each tree using an increment borer. Ring growth was assessed by marginal parenchyma bands to determine tree age and the mean diameter increment. Ring widths were indexed to construct cross-dating chronologies and correlated with climatic and hydrological variables. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tropical forests; El Niño; Tree rings; Dendroclimatology; Sea surface temperature (SST).
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672018000400311

Photosynthesis, growth, and survival in seedlings of four tropical fruit-tree species under intense radiation
Provedor de dados: 36
Autores: ORTIZ,Daniel; MORENO,Flavio; DÍEZ,Maria Claudia.
ABSTRACT In the Amazon region, agroforestry systems (AFSs) are recommended as a sustainable production alternative for local communities. A common component in Amazonian AFSs are tropical fruit trees, which can form the canopy or grow in the understory. In this study, we evaluated the effect of high radiation on photosynthesis, growth and seedling survival of four Amazonian fruit-tree species: Theobroma cacao, Eugenia stipitata, Inga edulis and Psidium guajava. Growth, chlorophyll fluorescence, gas exchange, and leaf pigments were measured in seedlings of each species grown for 12 months inside shade houses with low (8%), medium (30%) and high relative illumination (100%). Eugenia stipitata and T. cacao had the lowest acclimation capacity to high solar...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acclimation; Agroforestry systems; Carotenoids; Chloroplasts; Photosystem II.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672021000100001

Effect of dietary taurine supplementation on the growth and blood physiological parameters of juvenile pirarucu
Provedor de dados: 36
Autores: RODRIGUES,Ana Paula Oeda; SILVA,Marcello Cappio Nunes; BERETTA,Emiliano Salvatore; FONSECA,Flávio Augusto Leão da; PARISI,Giuliana; CONCEIÇÃO,Luís Eugênio Castanheira da; GONÇALVES,Ligia Uribe.
ABSTRACT For some fish species, dietary taurine supplementation has been proven necessary in feeds with considerable utilization of vegetable proteins to substitute fishmeal. Pirarucu, Arapaima gigas feeds mainly on taurine-rich animal items in nature, therefore this study aimed to evaluate the effect of dietary taurine supplementation (0, 0.5, 1, 1.5 and 3%) on the growth and blood physiological parameters of juvenile pirarucu. A commercial feed was utilized as the basal diet for the experimental diets. Three hundred fish (20.8 ± 2.3 g) were randomly distributed in 15 tanks and fed for 28 days. At the end of the trial, dietary taurine supplementation did not affect fish growth, feed consumption and feed efficiency. The original amounts of taurine (0.18%)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fishmeal; Vegetable proteins; Methionine; Arapaima gigas.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000400289

Daldinia eschscholtzii (Ascomycota, Xylariaceae) isolated from the Brazilian Amazon: taxonomic features and mycelial growth conditions
Provedor de dados: 36
Autores: Yuyama,Kamila Tomoko; Pereira,Jadergudson; Maki,Cristina Sayuri; Ishikawa,Noemia Kazue.
The Amazon has a high diversity of fungi, including species of the genus Daldinia (Ascomycota, Xylariaceae), which produce secondary metabolites with recognized nematicidal and antimicrobial activity. The ecological role of Daldinia is important, as stromata serve as refuges to many insects and arthropodes, and the fungi contribute to the degradation of vegetable organic matter. The aim of this study was to analyze the taxonomic features and mycelial growth conditions in vitro of a Daldinia specimen collected in the Brazilian Amazon. Morphological and molecular studies of the fungus identified it as D. eschscholtzii. To evaluate mycelial growth, we cultivated the fungus at 20, 25, 30, 35, and 40 °C in malt extract-peptone agar (MEPA), malt extract-peptone...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Daldinia eschscholzii; Fungal diversity; Macrofungus; Occurrence.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000100001

Feeding frequency affects feed intake and growth in juvenile pirarucu (Arapaima gigas)
Provedor de dados: 36
Autores: RODRIGUES,Ana Paula Oeda; LIMA,Adriana Ferreira; ANDRADE,Caniggia Lacerda; MEDEIROS,Rafaella Machado dos Santos de.
ABSTRACT Pirarucu is one of the main fish species for the development of aquaculture in the Amazon. In this study, the optimal feeding frequency for juvenile pirarucu was assessed based on growth and feed efficiency. Juvenile pirarucu weighing ca. 80 g were fed once, twice, three or four times daily until apparent satiation for 63 days. Fish fed three or four times per day presented higher growth, feed intake, and fat body content than those fed once or twice per day. There was no significant difference for feed conversion ratio, and protein and energy retention rates among treatments, suggesting that increased feeding frequency did not affect feed utilization efficiency. Mean feed intake per meal was higher when fish were fed once per day, possibly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feed management; Feed utilization; Feeding practice; Osteoglossiformes.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672019000100011

Seasonal changes of leaf Nitrogen content in trees of Amazonian floodplains
Provedor de dados: 36
Autores: PAROLIN,Pia; ARMBRÜSTER,Nicole; JUNK,Wolfgang J.
In Amazonian floodplains the trees are exposed to extreme flooding of up to 230 days a year. Waterlogging of the roots and stems affects growth and metabolic activity of the trees. An increased leaf fall in the aquatic period and annual increment rings in the wood indicate periodical growth reductions. The present study aims at documenting seasonal changes of metabolism and vitality of adult trees in the annual cycle as expressed by changes of leaf nitrogen content. Leaves of six tree species common in floodplains in Central Amazonia and typical representants of different growth strategies were collected every month between May 1994 and June 1995 in the vicinity of Manaus, Brazil. Mean leaf nitrogen content varied between 1.3% and 3.2% in the non-flooded...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leaf nitrogen; Growth strategy; Waterlogging; Várzea; Floodplain; Amazonia.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672002000200231

Growth and survival over ten years of Brazil-nut trees planted in three anthropogenic habitats in northern Amazonia
Provedor de dados: 36
Autores: SCOLES,Ricardo; GRIBEL,Rogério.
ABSTRACT We examined the growth and survival of Brazil-nut trees, Bertholletia excelsa (Lecythidaceae) under different environmental conditions and levels of canopy openness within experimental plantations in the Trombetas River valley, in northern Brazil. We planted 144 seedlings in three anthropogenic habitats with different levels of sunlight exposition: crop field (100% canopy opening), shrub fallow (20-80% canopy opening) and Brazil-nut forest (&lt; 10% canopy opening). We measured plant height and diameter annually and recorded mortality and resprouting over ten years. The performance of B. excelsa differed significantly among habitats, with the highest growth rate observed at the highest level of canopy openness (crop field). Survival was highest in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bertholletia excelsa; Plantation; Light-demanding; Land restoration; Resprouting.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672021000100020

PLANKTIC FORAMINIFERAL DIVERSITY: LOGISTIC GROWTH OVERPRINTED BY A VARYING ENVIRONMENT
Provedor de dados: 37
Autores: CÁRDENAS-ROZO,Andrés L; HARRIES,Peter J.
This study statistically assesses the relationship between the planktic foraminiferal long-term diversity pattern (~170 Ma to Recent) and four major paleobiological diversification models: (i) the 'Red Queen' (Van Valen, 1973; Raup et al., 1973), (ii) the turnover-pulse (Vrba, 1985; Brett and Baird, 1995), (iii) the diversity-equilibrium (Sepkoski, 1978; Rosenzweig, 1995), and (iv) the 'complicated logistic growth' (Alroy, 2010a). Our results suggest that the long-term standing diversity pattern and the interplay between origination and extinction rates displayed by this group do not correspond to the first three models, but can be more readily explained by the fourth scenario. Consequently, these patterns are likely controlled by a combination of planktic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abiotic and biotic controls; Complicated logistic growth; Diversity dynamics; Macroevolution; Planktic foraminifera; Paleobiology.
Ano: 2016
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2016000300005

COMPARING INOCULATION METHODS TO EVALUATE THE GROWTH OF Xanthomonas axonopodis pv. manihotis ON CASSAVA PLANTS
Provedor de dados: 37
Autores: MUÑOZ BODNAR,Alejandra; CRUZ GÓMEZ,Leidy Mariel; BERNAL,Adriana; SZUREK,Boris; LÓPEZ CARRASCAL,Camilo Ernesto.
Xanthomonas axonopodis pv. manihotis (Xam) is the causal agent of cassava bacterial blight (CBB), a major disease for cassava crops in South America and Africa. Until now the development of the disease is measured via AUDPC (Area Under Disease Progress Curve) but no reliable quantitative methods are available probably due to high variability of bacterial growth in planta. To establish an accurate method for bacterial quantification during the course of Xam infection within the host tissues, we analyzed bacterial populations upon stem and leaf-puncturing as well as leaf-clipping of cassava varieties MCOL1522 and SG107-35 challenged with the virulent Xam strain CIO151. Here, we show that the movement of bacteria along the tissues and especially in leaves is...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacterial growth; Cassava; Inoculation methods.
Ano: 2015
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2015000200005

Allelopathic suppression by Conyza canadensis depends on the interaction between latitude and the degree of the plant’s invasion
Provedor de dados: 39
Autores: Wang,Congyan; Jiang,Kun; Zhou,Jiawei; Liu,Jun.
ABSTRACT Allelopathic suppression of the growth of co-occurring plant species in invaded ecosystems is an important factor in some plant invasions. This study uses leaf extracts of the invasive plant species Conyza canadensis to determine its allelopathic effects along a latitudinal gradient, and under different cover classes and degrees of invasion, on seed germination and growth of Lactuca sativa, a sensitive bioindicator of allelochemicals. The allelopathic effects of C. canadensis on seedling height, root length, seedling biomass, germination percentage, germination potential, germination index, germination rate index, and vigor index of L. sativa increased significantly with increasing latitude. A possible explanation is that the leaves of plants...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelopathic effects; Conyza canadensis; Invasive plant species; Lactuca sativa; Seed germination and growth.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200212

Algicidal effects of aqueous leaf extracts of neem (Azadirachta indica) on Scenedesmus quadricauda (Turp.) de Brébission
Provedor de dados: 39
Autores: Chia,Mathias Ahii; Akinsanmi,Jamiu Taiwo; Tanimu,Yahuza; Ladan,Zakari.
The application of synthetic algaecides for the control of algae produces by-products that are sometimes toxic to the environment. There is a need for natural and cheap alternatives to synthetic algaecides. In the present study, we investigated the potential of aqueous crude extract of Azadirachta indica to inhibit the growth of Scenedesmus quadricauda. Phytochemical screening of the extract revealed the presence of groups of bioactive compounds that are capable of inhibiting microalgal growth. Chlorophyll a concentration, dry weight production and cell density of microalga decreased with increasing crude extract concentration. After three days of exposure, the 1000 mg/L extract concentration resulted in complete growth inhibition and cell lysis....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Algaecide; Growth inhibition; Microalgae; Neem; Oxidative stress; Phenotypic plasticity.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000100001

Growth and carbon assimilation limitations in Ricinus communis (Euphorbiaceae) under soil water stress conditions
Provedor de dados: 39
Autores: Sausen,Tanise Luisa; Rosa,Luís Mauro Gonçalves.
Water availability may influence plant carbon gain and growth, with large impacts on plant yield. Ricinus communis (L.), a drought resistant species, is a crop with increasing economic importance in Brazil, due to its use in chemical industry and for the production of biofuels. Some of the mechanisms involved in this drought resistance were analyzed in this study by imposing progressive water stress to pot-grown plants under glasshouse conditions. Water withholding for 53 days decreased soil water gravimetric content and the leaf water potential. Plant growth was negatively and significantly reduced by increasing soil water deficits. With irrigation suspension, carbon assimilation and transpiration were reduced and remained mostly constant throughout the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: A/Ci curves; Diurnal changes; Photosynthesis; Stomatal limitations; Water stress.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062010000300008

Influence of arbuscular mycorrhizal fungi inoculum produced on-farm and phosphorus on growth and nutrition of native woody plant species from Brazil
Provedor de dados: 39
Autores: Goetten,Luis Claudio; Moretto,Geraldo; Stürmer,Sidney Luiz.
Mycorrhizal fungus inoculum produced on-farm can be used during production of woody plant seedlings to reduce costs associated with purchase of commercial inoculant and fertilization. This study aimed to test the efficiency of a mycorrhizal inoculant produced on-farm to promote growth and nutrition of woody species in combination with different levels of phosphorus. Plants were submitted to different treatments of phosphorus (0, 40 and 80 mg P/dm3) and mycorrhizal inoculation (uninoculated, and inoculation with Rhizophagus clarus [Rc] or Claroideoglomus etunicatum [Ce]). Species included were Luehea divaricata, Centrolobium robustum, Schinus terebinthifolius, Garcinia gardneriana, Cedrella fissilis, and Lafoensia pacari. The inoculum was produced using the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biofertilizers; Inoculation; Mycorrhizal efficiency; Nursery; Seedlings growth; Tropical species.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000100009

Does inter-plant variation in sprouting time affect the growth/reproduction trade-off and herbivory in a tropical tree species?
Provedor de dados: 39
Autores: Fagundes,Marcilio; Xavier,Renata C.; Ramos,Letícia F.L.; Siqueira,Walisson K.; Reis-Junior,Ronaldo; Souza,Matheus L.
ABSTRACT The timing of phenological events varies within and among populations, affecting the performance of individual plants differently. We evaluated the effects of relative variation in sprouting time on the display of reproductive events, vegetative growth and herbivory in Copaifera langsdorffii (Fabaceae). A total of 93 trees of C. langsdorffii was monitored daily to determine their sprouting time. We collected ten terminal branches of each plant to evaluate vegetative growth, production of defense compounds and insect herbivore damage. The sprouting time for the studied population lasted 67 days. Variation in sprouting time did not affect the probability of plants to enter the reproductive stage. Plants that entered the reproductive stage showed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Copaifera langsdorffii; Flowering trigger; Herbivory escape; Phenological asynchrony; Resource allocation.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000400602

Combined effects of low light and water stress on Jatropha curcas L. promotes shoot growth and morphological adjustment
Provedor de dados: 39
Autores: Carneiro,Isabella Christina Silveira; Pereira,Eduardo Gusmão; Souza,João Paulo.
Jatropha curcas (physic nut) is a plant with economic and pharmaceutical uses. Basic studies on the influence of environmental factors on the early development of J. curcas are important for improving farming techniques and increasing productivity. This study investigated the adjustments of J. curcas to the environmental factors of drought and light stress in order to determine which factors most strongly affect the allocation of biomass during early growth. Leaves, stems, and roots of young plants were sampled and leaf area was measured during January and June in 2011. Plants of J. curcas that were grown in shade and subjected to water stress showed higher biomass allocation to aerial parts (mainly stems), which can be explained as a strategy for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth; Jatropha curcas; Leaf area; Light stress; Water deficit.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000400467

Tannins in Baccharis dracunculifolia (Asteraceae): effects of seasonality, water availability and plant sex
Provedor de dados: 39
Autores: Espírito-Santo,Mário M; Fernandes,G. Wilson; Allain,Luciana R; Reis,Ticiana R. F.
Several ecological, genetic, and environmental factors are known to influence tannin concentration in plant tissues. In this study, the effects of seasonality, water availability, and sex of the plant on tannin concentration in the dioecious shrub Baccharis dracunculifolia were assessed. The effects of water availability on plant shoot growth and its relationship to tannin concentration were also experimentally evaluated. Tannins occurred in B. dracunculifolia from November to May, peaking during the summer (December to March). However, no relationship between tannin concentration, rainfall and temperature was found. No difference in tannin concentration and shoot growth was found between plants in the irrigated and control treatments, this suggesting that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tannins; Baccharis dracunculifolia; Irrigation; Gender; Phenology.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33061999000200006

Comparison of seedling growth among three co-occurring varieties of Araucaria angustifolia (Bertol.) Kuntze under greenhouse conditions
Provedor de dados: 39
Autores: Coutinho,André Luiz; Dillenburg,Lúcia Rebello.
Araucaria angustifolia (Bertol.) Kuntze is a tall, long-lived tree species, which grows as an emergent tree in the araucaria forests of southern Brazil. Four varieties have been described for this species, and three of them were selected for this study: "angustifolia" (the type variety), "caiova" and "indehiscens". These are co-occurring varieties that differ in external seed color and timing of seed maturation. The purpose of this study was to compare the initial growth of plants originated from seeds of these three varieties, in order to test the hypothesis that these varieties also differ in the initial growth of their seedlings. Seeds were collected from a single forest location, and 60 plants per variety were grown in pots for a period of 244 days....
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Araucariaceae; Brazilian pine; Monkey pine; Caiova pine; Phenotypic variation.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062010000200025

Effect of salt stress on the growth of Lippia gracilis Schauer and on the quality of its essential oil
Provedor de dados: 39
Autores: Ragagnin,Roberto Carlos Grillo; Albuquerque,Cynthia Cavalcanti; Oliveira,Francisco Fábio Mesquita; Santos,Ricardo Gonçalves; Gurgel,Eleneide Pinto; Diniz,Jaécio Carlos; Rocha,Simone Alves Serafim; Viana,Francisco Arnaldo.
This study evaluated the effect of salt stress on the growth of Lippia gracilis Schauer, a species native to the caatinga (shrublands) of Brazil and rich in essential oils, as well as on the quality of its oil. We exposed individuals of L. gracilis to NaCl, in the following concentrations, for a period of 40 days: 25 mM; 50 mM; 75 mM; and 100 mM. An additional group of plants was not exposed to NaCl (controls). Data were collected on days 20 and 40. We evaluated relative growth rate; shoot and root dry weight; relative water content; proline concentration in leaves; and chemical composition of the essential oil. At all concentrations, NaCl reduced the relative growth rate in comparison with that observed for the controls. No significant difference in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alecrim-da-chapada; Carvacrol; Salt stress; Thymol.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000300006

Morpho-physiological responses of a subtropical strain of Cylindrospermopsis raciborskii (Cyanobacteria) to different light intensities
Provedor de dados: 39
Autores: Wojciechowski,Juliana; Fernandes,Luciano Felício; Fonseca,Fernanda Vitória Buck.
ABSTRACT The toxigenic cyanobacterium Cylindrospermopsis raciborskii previously restricted to tropical latitudes, has been increasingly reported in temperate lakes in recent decades. The causes of its biogeographical expansion are under investigation, but efficient physiological adaptation to changes in temperature and light regimes are likely to be involved. The present study evaluated the morpho-physiological responses of a strain of C. raciborskii from southern Brazil to nine light intensities, from 9 to 250 µmol photons m-2 s-1. Blooms of this cyanobacterium are regularly recorded in the region. Morpho-physiological responses were measured based on growth rate and trichome length. Cylindrospermopsis raciborskii showed slow growth at low light...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cylindrospermopsis; Cyanobacteria blooms; Experiments; Light intensities; Morpho-physiological responses; Southern Brazil; Subtropical.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000200232

Improvement in light utilization and shoot growth in Hymenaea stigonocarpa under high CO 2 concentration attenuates simulated leaf herbivory effects
Provedor de dados: 39
Autores: Maia,Renata A.; Fernandes,Geraldo W.; Silva,Advanio I. S.; Souza,João Paulo.
ABSTRACT This study evaluated the photochemical responses of photosystem II and growth of Hymenaea stigonocarpa under CO2-enriched conditions with exposure to simulated herbivory events. After herbivory simulation in two distinct parts of the stem of plants (apex and base), chlorophyll a fluorescence, chlorophyll index, growth, extrafloral nectary density, leaf mineral nutrition, and biomass production were evaluated. Plants of H. stigonocarpa grown under high [CO2] after simulated herbivory in the apical part of the stem had higher electron transport rate, effective quantum yield of photosystem II, and chlorophyll contents. However, simulated herbivory in the basal portion of plants grown under high [CO2] increased plant height, branch and root length,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomass allocation; Cerrado; Climate change; Leaf damage; Leaf development.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000300558

The effect of plant growth regulators on height control in potted  Arundina graminifolia orchids (Growth regulators in Arundina graminifolia)
Provedor de dados: 1
Autores: Wanderley, Christina da Silva; Faria, Ricardo Tadeu de; Ventura, Mauricio Ursi; Vendrame, Wagner.
Orchids have become an important portion of the international floriculture market.  Arundina graminifolia is a terrestrial orchid that produces attractive flowers, and, although the species could be a potential candidate for the floriculture market, its considerable height makes it difficult to transport and commercialize.  A number of plant growth regulators have been utilized to control plant height in ornamentals and other species.  Thus, the aim of this study was to evaluate the efficiency of growth regulators, paclobutrazol and chlormequat chloride on the vegetative development of containerized A. graminifolia orchid aiming at height control.  Paclobutrazol (Cultar) was applied at 0, 5, 10, and 20 mg L-1, and CCC (Cycocel) was applied at 0, 2000,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.01.03.00-8 paclobutrazol; Chlormequat chloride; Vegetative development Fitotecnia.
Ano: 2014
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/18085

Phytotoxic effects of aqueous leaf extracts of four Myrtaceae species on three weeds
Provedor de dados: 1
Autores: Imatomi, Maristela; Novaes, Paula; Miranda, Maria Augusta Ferraz Machado; Gualtieri, Sonia Cristina Juliano.
Research on allelopathic interactions can be useful in the search for phytotoxins produced by plants that may be employed as natural herbicides. The aim of this study was to assess the phytotoxic action of aqueous leaf extract of Blepharocalyx salicifolius, Myrcia multiflora, Myrcia splendens and Myrcia tomentosa on the germination and development of three weeds. The working hypothesis was that leaf extracts of Myrtaceae may negatively influence the development of weed species. Aqueous leaf extracts at 5 and 10% (g mL-1) were tested on the germination and growth of Euphorbia heterophylla, Echinochloa crus-galli and Ipomoea grandifolia and compared with the herbicide oxyfluorfen and distilled water (control). The most extracts caused pronounced delays in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agronomia e fisiologia vegetal allelopathy; Germination; Growth; Herbicide Agronomia.
Ano: 2015
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/19079

Di-nitrogen fixation at the early and late growth stages of soybean
Provedor de dados: 1
Autores: Hamawaki, Raphael Lemes; Kantartzi, Stella K.
 Soybean derives a significant portion of the required nitrogen (N) from the symbiosis with rhizobia bacteria. However, information on the available genetic variation for N2 fixation capacity in different growth stages of soybean is limited. The objective of this study was to investigate the N2 fixation capacity of 22 soybean lines compared with that of non-nodulating and supernodulating checks at the early and late growth stages and identify the most informative traits for selection. Two cycles of greenhouse experiments were carried out to estimate the percentage of N derived from the atmosphere (%Ndfa) as well as 10 different traits related to N2 fixation. The results showed that %Ndfa was significantly different among the lines at the early and late...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; %Ndfa; 15N dilution technique; Nodulation; Symbiosis.; (Agronomia; Fitotecnia; Melhoramento Vegetal).
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/36372

Adaptability and stability of jabuticaba tree genotypes based on plant growth
Provedor de dados: 1
Autores: Radaelli, Juliana Cristina; Silva, Marciéli da; Kosera Neto, Carlos; Wagner Júnior, Américo; Domingues, Lucas da Silva.
The aim of this work was to verify by means of adaptability and stability analyses which genotype of Plinia sp. (jabuticaba tree) is more adapted to orchard conditions, based on the measures of stem growth and primary shoots. During a three-year period, the initial growth of jabuticaba tree genotypes from the native fruit collection of the Experimental Station of the Universidade Tecnológica Federal do Paraná - Câmpus Dois Vizinhos was evaluated. These genotypes included seedlings from forest fragments of the southwestern region of Paraná State and some from Minas Gerais State, Brazil. Analysis of variance (ANOVA) was performed, in a 29 x 3 factorial design, with three replicates in each treatment. Phenotypic adaptability and genotypic stability were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eberhart and Russel; Lin and Binns; AMMI; Plinia sp.; Jabuticaba tree; Domestication; 1.02.03.00-1.
Ano: 2019
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42573

Trough and pot crop systems with leaching recirculation and defoliation levels for mini tomatoes
Provedor de dados: 1
Autores: Perin, Lais; Peil, Roberta Marins Nogueira; Höhn, Daniela; Rosa, Douglas Schulz Bergman da; Wieth, Albertina Radtke; Grolli, Paulo Roberto.
The use of raw rice husk as substrate allows the use of crop systems that promote the recirculation of leachate in long crop cycles. Mini tomatoes present relatively low demand for photoassimilates. Thus, partial defoliation of the sympodium could benefit the crop without damage to the production or quality of the fruits. The objective of this work was to evaluate the plant growth, fruit yield and fruit quality of Cherry Hybrid Wanda and Grape Hybrid Dolcetto mini tomatoes cultivated in two recirculation crop systems (pots and troughs), using raw rice husk as substrate, under three defoliation conditions (without defoliation, removal of one and two leaves of the sympodium). The Cherry cultivar showed higher plant growth, fruit yield and mean fruit size....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciências Agrárias; Agronomia; Fitotecnia cherry; Grape; Growth; Solanum lycopersicum; Rice husk; Substrate. Olericultura.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/34992

Trough and pot crop systems with leaching recirculation and defoliation levels for mini tomatoes
Provedor de dados: 1
Autores: Perin, Lais; Peil, Roberta Marins Nogueira; Höhn, Daniela; Rosa, Douglas Schulz Bergman da; Wieth, Albertina Radtke; Grolli, Paulo Roberto.
The use of raw rice husk as substrate allows the use of crop systems that promote the recirculation of leachate in long crop cycles. Mini tomatoes present relatively low demand for photoassimilates. Thus, partial defoliation of the sympodium could benefit the crop without damage to the production or quality of the fruits. The objective of this work was to evaluate the plant growth, fruit yield and fruit quality of Cherry Hybrid Wanda and Grape Hybrid Dolcetto mini tomatoes cultivated in two recirculation crop systems (pots and troughs), using raw rice husk as substrate, under three defoliation conditions (without defoliation, removal of one and two leaves of the sympodium). The Cherry cultivar showed higher plant growth, fruit yield and mean fruit size....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cherry; Grape; Growth; Solanum lycopersicum; Rice husk; Substrate.; Olericultura.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/34992

Di-nitrogen fixation at the early and late growth stages of soybean
Provedor de dados: 1
Autores: Hamawaki, Raphael Lemes; Kantartzi, Stella K.
 Soybean derives a significant portion of the required nitrogen (N) from the symbiosis with rhizobia bacteria. However, information on the available genetic variation for N2 fixation capacity in different growth stages of soybean is limited. The objective of this study was to investigate the N2 fixation capacity of 22 soybean lines compared with that of non-nodulating and supernodulating checks at the early and late growth stages and identify the most informative traits for selection. Two cycles of greenhouse experiments were carried out to estimate the percentage of N derived from the atmosphere (%Ndfa) as well as 10 different traits related to N2 fixation. The results showed that %Ndfa was significantly different among the lines at the early and late...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: (5.01.00.00-9; 5.01.03.00-8; 5.01.03.05-9) Glycine max; %Ndfa; 15N dilution technique; Nodulation; Symbiosis. (Agronomia; Fitotecnia; Melhoramento Vegetal).
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/36372

Eichhornia crassipes biomass as a dietary supplement for Pterophyllum scalare (Schultze, 1823)
Provedor de dados: 2
Autores: Sipaúba-Tavares, Lúcia Helena; Silva, Juliane dos Santos Alves da; Fernandes, João Batista Kochenborger.
Current study evaluates the macrophyte biomass of water hyacinth, Eichhornia crassipes, in diet food to improve the growth and survival of angelfish, Pterophyllum scalare. The liquid (extract) and ground modes are employed. Specific growth rate, weight gain, feed intake and final body weight in basal diet and macrophyte extract biomass diets were similar (p &gt; 0.05). Fish survival was high in all dietary treatments (&gt; 90%), while survival percentage of 100% was reported in ground macrophyte biomass treatment. Ground macrophyte biomass may be included in the diet of P. scalare up to 5%. The inclusion of E. crassipes in the diet of P. scalare proved similar or better results than basal diet. The macrophyte proved to be a food strategy in angelfish diets...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquicultura biochemical composition; Growth performance; Macrophyte biomass.
Ano: 2019
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/43690

Adjusting weight growth curve of male quails Coturnix japonica reared in the semi-arid region of the State of Pernambuco
Provedor de dados: 2
Autores: Lucena, Leandro Ricardo Rodrigues de; Holanda, Marco Aurélio Carneiro de; Holanda, Mônica Calixto Ribeiro de; Anjos, Marcelo Lopes dos.
This study adjusted different regression models to describe the growth pattern of meat quails from birth to 42 days of age. Data of 300 male quails were used. Weight and height information of all quails were collected weekly from the 1st to the 42nd day of age. Body weight of poultry was subjected to the polynomial, logistic, Gompertz, Weibull, and log-normal regression models. The criteria used to choose the best model to explain the growth curve of quails were the coefficient of determination of the model, Akaike’s information criterion, sum of squared residuals and Willmott’s index. For all the models used, the variables age and height were significant to explain the weight of quails. The polynomial (R² = 99.99%, AIC = 24.68, SSR = 27.5, d = 0.9999) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Modelling; Poultry; Regression model.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/42563

Production of pigments in Alternanthera sessilis calli mediated by plant growth regulators and light
Provedor de dados: 3
Autores: Milech, Cristini; Lucho, Simone Ribeiro; Kleinowski, Alítcia Moraes; Dutra, Débora Barwaldt; Soares, Mariana Mühlenberg; Braga, Eugenia Jacira Bolacel.
Among the compounds produced by plants, pigments such as betalains have received attention from both food and pharmaceuticals industries. The Alternanthera sessilis species produces these pigments, though in small quantities, and so it is necessary to increase production. Thus, many studies use elicitors that are capable of triggering physiological or morphological responses in plants. The objective was to establish callus production in A. sessilis grown under different combinations of growth regulators and light qualities and to assess whether these factors can increase betalain and flavonoid production. Leaf and internodal explants in MS medium with different growth regulators were used to obtain calli, which were subsequently transferred to a betacyanin...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Betalain; Flavonoids; Secondary metabolites; Medicinal plants.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/36312

Efficiency of jojoba oil and bio-nematicide on Meloidogyne incognita and performance of flame seedless grapevine cuttings
Provedor de dados: 111
Autores: El-Nagdi, Wafaa Mohamed.
The whole world is moving to lay off chemical pesticides and replaced with natural compounds. Fortunately, jojoba oil is one of these alternatives, being a special type of plant oils containing many compounds that can improve growth, nutritional status of plants and tolerance to nematodes infection. The present study was conducted during the successive growing seasons 2015 and 2016, in the Pomology greenhouse, NRC, Dokki, Giza, Egypt. Flame Seedless grapevine cuttings (one year old) were selected to study the effect of jojoba oil at 5 and 10 %, either with or without Meloidogyne incognita infection and Bio-Nematicide “Nema-Foo®” at 5 and 10 %, with infection, was a comparison factor in addition to the control (uninfected  and infected plants). These...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flame Seedless grapevine cutting; Vigor growth; Leaf nutrient content; Meloidogyne incognita.
Ano: 2018
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4415

Field Measurements of Spray Drift in Strawberry
Provedor de dados: 111
Autores: Nils Bjugstad; Petter Hermansen.
Passive drift samplers were mounted on a frame, attached to the sprayer, at 2 m behind the nozzles of different strawberry spraying systems. The spraying systems were operated at a common tractor speed of 2 m/s.  The drift samplers were made of cotton and acryl thread of 2 mm diameter, 3 m long and these were mounted horizontally on a frame at different heights up to 2.0 m above the ground. Comparing measurements at different growth stages (1. in May and 2. in August) demonstrated that drift was reduced by 75% due to the increased filtering effect of the leaf density in August. The drift from a tunnel sprayer was 10 and 13% of a reference sprayer when using an end-curtain and 55% and 37% without any end-curtain at growth stages 1 and 2, respectively.  At...
Ano: 2009
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1048

Growth inhibitory effect of extracts from Reynoutria sp. plants against Spodoptera littoralis larvae
Provedor de dados: 115
Autores: Pavela,Roman; Vrchotová,Nadezda; Šerá,Bozena.
Laboratory studies were conducted to determine the effects of methanolic extracts from three Reynoutria species on feeding, development and mortality of larvae S. littoralis. The extracts of all three Reynoutria species did not reveal feeding deterrence in the Spodoptera littoralis larvae. However they significantly decreased the larvae growth and the efficiency of conversion of the ingested and digested food. Conversion of the ingested food was lower, when compared with control larvae. The use of food provoked prolongation of the larvae development and chronic toxicity. Even if extracts of all three plant species were effecting the larvae mortality with the same results (LC50 ranged from 0.5 to 1 mg g-1 in all extracts), the impact on growth inhibition in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reynoutria; Spodoptera littoralis; Growth inhibition; Botanical insecticides; Toxicity test; Plant extracts.
Ano: 2008
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952008000500009

Growth, photosynthetic pigments and production of essential oil of long-pepper under different light conditions
Provedor de dados: 42
Autores: LIMA,VANDIMILLI A.; PACHECO,FERNANDA V.; AVELAR,RAFAELLA P.; ALVARENGA,IVAN C.A.; PINTO,JOSÉ EDUARDO B.P.; ALVARENGA,AMAURI A. DE.
ABSTRACT Piper hispidinervum C. DC. is popularly known as long-pepper and it owns a commercial value due to the essential oil it produces. Long-pepper oil is rich in safrole and eugenoln components that have insecticidal, fungicidal and bactericidal activity. It has been establish that to medicinal plants light influences not only growth but also essential oil production. The growth, the content of photosynthetic pigments and the essential oil production of Piper hispidinervum at greenhouses with different light conditions was evaluated. The treatments were characterized by cultivation of plants for 180 days under different light conditions, produced by shading greenhouses with 50% and 30% of natural incident irradiance, two colored shading nets red (RN)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colored nets; Light quality; Medicinal plants; Safrole.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301167

Ground level photosynthetically active radiation dynamics in stands of Acacia mearnsii De Wild
Provedor de dados: 42
Autores: PÉLLICO NETTO,SYLVIO; SANQUETTA,CARLOS R.; CARON,BRAULIO O.; BEHLING,ALEXANDRE; SIMON,AUGUSTO A.; CORTE,ANA PAULA D.; BAMBERG,ROGÉRIO.
ABSTRACTThe objective is to study the dynamics of photosynthetic radiation reaching the soil surface in stands of Acacia mearnsii De Wild and its influence on height growth in stands. This fact gives rise to the formulation of the following hypothesis for this study: "The reduction of the incidence of light inside the stand of black wattle will cause the inflection point in its height growth when this reaches 4 to 5 m in height, i.e. when the stand is between 2 and 3 years of age". The study was conducted in stands in the state of Rio Grande do Sul, Brazil, where diameters at breast height, total height and photosynthetically active radiation available at ground level were measured. The frequency tended to be more intense when the age of the stands...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Burr function; Light intensity; Probabilistic models; Temporal variation.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000401833

Growth and intestinal morphology of juvenile pacu Piaractus mesopotamicus (Holmberg 1887) fed dietary prebiotics (mannanoligosaccharides - MOS)
Provedor de dados: 42
Autores: SADO,RICARDO Y.; BICUDO,ÁLVARO J.A.; CYRINO,JOSÉ E.P.
Intensification of aquaculture production systems exposes fish to numerous stressors, which may negatively affect their growth and limit profitability of aquaculture systems. This study determined effects of increasing levels of dietary mannanoligosaccharides on growth and intestine morphology of pacu. Fish (44.04 g) were randomly distributed into 32 tanks (500 L; 10 fishes per tank) and fed during 63 days with a commercial diet supplemented with 0.0; 0.2; 0.4; 0.6; 0.8; 1.0; 1.5 and 2.0% dietary mannanoligosaccharides. Growth parameters did not differ (P&gt;0.05) between fish fed control diet and mannanoligosaccharide supplemented diets. Intestinal villi perimeter was performed in fish fed control diet, 0.4 and 1.5% dietary mannanoligosaccharides and also...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish nutrition; Histology; Piaractus mesopotamicus; Prebiotics.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000301517

Growth and hematology of juvenile pacu Piaractus mesopotamicus (Holmberg 1887) fed with increasing levels of vitamin E (DL-α-tocopheryl acetate)
Provedor de dados: 42
Autores: SADO,RICARDO Y.; BICUDO,ÁLVARO J.A.; CYRINO,JOSÉ E.P.
Intensive fish production systems are characterized by 100% artificial feeding, so any dietary imbalances or deficiencies may lead to diseases outbreaks and economic losses. This study was set out to determine the effects of increasing levels of dietary vitamin E on growth and hematology of juvenile pacu. Fishes were fed for 90 days, twice a day until apparent satiation with semi-purified diets containing 0.0; 25; 50; 150; 300 or 600 mg.kg−1 diet DL-α-tocopheryl acetate in a completely randomized design trial (n=4); biometrical and hematological data were collected and analyzed. Fishes fed with vit E diet (150 mg.kg−1) showed higher (p&lt;0.05) weight gain and specific growth. Hematocrit, erythroblast number and total plasma protein were increased...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish nutrition; Hematology; Piaractus mesopotamicus; Vitamin E.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100385

Growth of tree species and sugarcane production in agroforestry systems
Provedor de dados: 42
Autores: CARON,BRAULIO O.; ELLI,ELVIS F.; BEHLING,ALEXANDRE; ELOY,ELDER; SCHMIDT,DENISE; STOLZLE,JOHN.
Abstract The appropriate choice of tree species and planting arrangement for use in agroforestry systems is very important in order to maximize productivity and sustainability. The aim of this study was to evaluate the growth of five tree species and its effect on sugarcane yields in different planting arrays in agroforestry systems. The study was conducted from 2007 to 2011 in the city of Frederico Westphalen, RS, Brazil. The five studied tree species were: guapuruvu (Schizolobium parahybae), bracatinga (Mimosa scabrella), canafístula (Peltophorum dubium), angico-vermelho (Parapiptadenia rigida) and eucalypt (Eucalyptus urophylla S.T. Blake x Eucalyptus grandis Hill ex Maiden). Root collar diameter, diameter at breast height, plant height and mean...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Array of plants; Competition; Crown diameter; Height.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000502425

Colored shade nets induced changes in growth, anatomy and essential oil of Pogostemon cablin
Provedor de dados: 42
Autores: RIBEIRO,AURISLAINE S.; RIBEIRO,MARIANA S.; BERTOLUCCI,SUZAN K.V.; BITTENCOURT,WANDERLEY J.M.; CARVALHO,ALEXANDRE A. DE; TOSTES,WESLEY N.; ALVES,EDUARDO; PINTO,JOSÉ E.B.P.
ABSTRACT The purpose of this investigation was to determine the influence of colored shade nets on the growth, anatomy and essential oil content, yield and chemical composition of Pogostemon cablin. The plants were cultivated under full sunlight, black, blue and red nets. The harvesting was performed 5 months after planting and it was followed by the analysis of plant growth parameters, leaf anatomy, essential oil content, yield and chemical composition. The plants grown under red net have produced more leaf, shoot, total dry weight and leaf area. Plants cultivated under colored nets showed differences in morphological features. Plants maintained under red net had a higher leaf blade thickness and polar and equatorial diameter of the stomata ratio....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Light quality; Patchouli; Patchoulol; Radiation intensity.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000401823

Pequi leaves incorporated into the soil reduce the initial growth of cultivated, invasive and native species
Provedor de dados: 42
Autores: ALLEM,LAÍSA N.; GOMES,ANABELE S.; BORGHETTI,FABIAN.
Studies have identified the phytotoxicity of many native species of the Cerrado; however, most of them were conducted either in inert substrates, or using exaggerate proportions of plant material. We investigated the phytotoxicity of pequi leaves added to substrate soil in quantities compatible with the litter produced by this species. Pequi leaves were triturated and added to red latosol in concentrations of 0.75%, 1.5% and 3%; the control was constituted of leafless soil. These mixtures were added to pots and irrigated daily to keep them moist. Germinated seeds of the cultivated sorghum and sesame, of the invasive brachiaria and of the native purple ipê, were disposed in the pots to grow for five to seven days at 30°C within a photoperiod of 12 h....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelopathy; Caryocar brasiliense; Cerrado; Phytotoxicity; Tabebuia impetiginosa; Urochloa decumbens.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000401761

High quality synthetic quartz crystal growth for the information technology
Provedor de dados: 42
Autores: Shinohara,Armando H.
Tipo: Info:eu-repo/semantics/article
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652000000400031

Modulators of axonal growth and guidance at the brain midline with special reference to glial heparan sulfate proteoglycans
Provedor de dados: 42
Autores: CAVALCANTE,LENY A.; GARCIA-ABREU,JOSÉ; MOURA NETO,VIVALDO; SILVA,LUIZ CLAUDIO; WEISSMÜLLER,GILBERTO.
Bilaterally symmetric organisms need to exchange information between the left and right sides of their bodies to integrate sensory input and to coordinate motor control. Thus, an important choice point for developing axons is the Central Nervous System (CNS) midline. Crossing of this choice point is influenced by highly conserved, soluble or membrane-bound molecules such as the L1 subfamily, laminin, netrins, slits, semaphorins, Eph-receptors and ephrins, etc. Furthermore, there is much circumstantial evidence for a role of proteoglycans (PGs) or their glycosaminoglycan (GAG) moieties on axonal growth and guidance, most of which was derived from simplified models. A model of intermediate complexity is that of cocultures of young neurons and astroglial...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Astrocytes; Axon growth; Extracellular matrix; Heparan sulfate; Midline; Midbrain.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652002000400010

Plant growth, radiation use efficiency and yield of sugarcane cultivated in agroforestry systems: An alternative for threatened ecosystems
Provedor de dados: 42
Autores: SCHWERZ,FELIPE; MEDEIROS,SANDRO L.P.; ELLI,ELVIS F.; ELOY,ELDER; SGARBOSSA,JAQUELINE; CARON,BRAULIO O.
Abstract Sugarcane (Sacharum officinarum L.) monocropping has had a great socio-economic and environmental impact in Brazil, and agroforestry systems have been considered as an alternative for more sustainable production; however, there is a lack of field research under such conditions. The aim of this study was to evaluate the growth rates, radiation use efficiency and yield traits in sugarcane cultivated in the understory of Aleurites fordii, in two agroforestry arrangements and monocropping systems. A field experiment was conducted from July 2015 to June 2016 in the city of Frederico Westphalen, Rio Grande do Sul, Brazil. The radiation use efficiency, assimilate partitioning, leaf area index, absolute growth rate, net assimilation rate, number of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomass partitioning; Crop systems; Growth rates; Sacharum officinarum; Yield traits.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703265

Influences of dietary crude protein and stocking density on growth performance and body measurements of ostrich chicks
Provedor de dados: 42
Autores: MAHROSE,KHALID M.; EL-HACK,MOHAMED E. ABD; AMER,SHYMAA A.
Abstract: Thirty-six African Black ostrich chicks were used to investigate the effects of dietary crude protein (CP) levels (180, 210 and 240 g/kg), stocking density (4.5 and 3 m2/bird) and their interactions. A factorial arrangement was used to examine the impact of treatments on growth performance and body measurements of ostrich chicks during 2 to 10 weeks of the age. Results indicated that factors studied did not change growth performance traits. The highest value of protein efficiency ratio was observed in ostrich chicks fed diet contained 240 g/kg diet. Birds fed diet contained 240 g CP /kg diet and kept at stocking density of 3 m2 per bird had numerically the highest protein efficiency ratio. Shank girth and tibiotarsus length decreased with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crude Protein; Stocking density; Growth; Body measurements; Ostrich.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000100630

Morpho-physiological characteristics by sweet potato cultivars as function of irrigation depth
Provedor de dados: 42
Autores: DELAZARI,FÁBIO T.; ASSIS,IGOR R.; CABRERA,DIEGO F.V.; FERREIRA,MARIANE G.; DIAS,LUIZ E.; RUEDA,ANGELICA; ZANUNCIO,JOSÉ C.; SILVA,DERLY J.H.
Abstract The sweet potato is an alternative energy source, but its sustainability depends on efficient water use. The objective of this study was to evaluate sweet potato morpho-physiological characteristics, and water use efficiency (WUE). Irrigation depths of 50, 75, 100, and 125% of crop evapotranspiration (ETc) were applied. The morpho-physiological indicators, WUE, leaf area index (LAI), leaf water potential, leaf temperature, and leaf chlorophyll index (ICF), were evaluated. The WUE of the sweet potato cultivars increased until the 75% water depth of the ETc. The LAI of these cultivars increased with irrigation depth, with higher values at 100% of the ETc. The leaf water potential of the two sweet potato cultivars was lowest with the lower irrigation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ipomoea batatas; Irrigation management; Leaf temperature; Water stress; Water use efficiency.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703541

Effect of prey concentrations and feed training on production of Hoplias lacerdae juvenile
Provedor de dados: 42
Autores: LUZ,RONALD K.; PORTELLA,MARIA CÉLIA.
The aim of this work was to investigate the effects of daily prey concentration during the first 15 days of active feeding of Hoplias lacerdae larvae, and the juvenile size on the feed training. In the first phase, the larvae received five Artemia nauplii concentrations (P). In the second phase, the juveniles from each treatment were trained to accept formulated diet. Superior growth was related to higher initial daily prey concentrations (900 and 1100 nauplii larvae-1). During feed training, the growth tendency was similar to that verified in the first phase. The lowest values of specific growth rate (SGR) were registered after the introduction of the semi-moist diet used in the feed training. However, the values of SGR recovered along the experiment and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artemia; Feeding management; Larviculture; Formulated diet.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000201125

Orange and Passion Fruit Wastes Characterization, Substrate Hydrolysis and Cell Growth of Cupriavidus necator, as Proposal to Converting of Residues in High Value Added Product
Provedor de dados: 42
Autores: LOCATELLI,GABRIEL O.; FINKLER,LEANDRO; FINKLER,CHRISTINE L.L.
Abstract: Brazil is the world’s largest producer of orange and passion fruit, which are destined mainly for industrialization, generating grand volumes of wastes. The solid portion of these residues is a rich source of pectin - composed mainly of galacturonic acid and neutral sugars, which through the hydrolysis process can be used in biological conversion processes, as the production of polyhydroxyalkanoates (PHAs). This way, we characterized these wastes, followed by the extraction and hydrolysis of pectin for employ as a substrate for the cell growth of Cupriavidus necator. The results confirmed the large portion of pectin (almost 40 g.100g-1) and soluble sugars, present in these wastes. The hydrolyzed extract showed as a good source of carbon for the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological conversion processes; Enzymatic hydrolyses; Orange wastes; Passion fruit wastes; Pectin; Polyhydroxyalkanoates.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000100629

Caracteres culturais das bactérias dos nódulos de algumas leguminosas tropicais
Provedor de dados: 43
Autores: Galli,Ferdinando.
23 isolates from root nodules of 13 leguminous species were tested in laboratory for cultural and physiological characteristics. The following conclusions can be drawn: 1 - The cultural and physiological characters were not enough to identify the different isolates. 2 - The data from cultural and physiological tests help the identification of the bacteria, when checked with data from cross-inoculation tests reported elsewhere (GALLI, 1958). The bacteria studied herein may be grouped as the following: a) nodule bacteria from Vigna sinensis, Calopogonium muconoides, Centrosema pubescens, Desmodium adscendens, D. discolor, Indigofera mucronata, I. subulata, I. sumatrana, Stylosanthes guyanensisA Tephrosia cândida and Teramnus uncinatus: bacteria with scanty...
Tipo: Info:eu-repo/semantics/article
Ano: 1959
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0071-12761959000100008

Vegetative growth and yield of tomato (Lycopersicum esculentum Mill.) in response to the systemic insecticide phorate
Provedor de dados: 44
Autores: Guedes,Raul N. C.; Guedes,Nelsa M. P.; Picanço,Marcelo.
The effect of the systemic insecticide phorate on vegetative growth and yield of tomato (Lycopersicum esculentum Mill.) was studied in the greenhouse. Three dosages of phorate (1.5, 7.5, and 13.5 mg a.i./ 1.5 L pot) were applied along with a control (without insecticide application). The plants were harvested at 17, 32, 51, 69, and 90 days after tilling. Regression analysis did not show any significant effect of insecticide dosages in plant and root length. However, an overall negative effect of phorate was observed on leaf area, shoot and root dry weights, and fruit fresh weight. Based on multiple regression models, maximum leaf area was obtained with 6.7 mg a.i./pot and maximum shoot and root dry weights were obtained with no insecticide application and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tomato; Systemic insecticide; Vegetative growth.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591998000300013

Growth and hematological responses of tambaqui fed different amounts of cassava (Manihot esculenta)
Provedor de dados: 45
Autores: Aride,P.H.R.; Oliveira,A.T.; Oliveira,A.M.; Ferreira,M.S.; Baptista,R.B.; Santos,S.M.; Pantoja-Lima,J.
ABSTRACT Tambaqui,Colossoma macropomum is a fish of primary importance in Brazilian aquaculture and in the Amazon region in particular. The aim of this work is to analyze the combined effects of physical training and levels of dietary cassava (Manihot esculenta) on the hematological parameters, food intake, conversion efficiency, growth ratio and swimming performance of this fish. A diet for tambaqui consisting of 30% cassava caused decreases in weight gain and specific growth rate compared with the control group. Diets containing 15% or 45% cassava did not affect these indices and did not cause hematological changes in tambaqui juveniles, indicating that some amount of cassava can be used as an alternative energy source for this important aquaculture...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Teleosts; Growth; Feed evaluation; Stress; Blood.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000601697

Growth, body composition and hematology of juvenile pacu (Piaractus mesopotamicus) fed increasing levels of ractopamine
Provedor de dados: 45
Autores: Bicudo,A.J.A.; Sado,R.Y.; Cyrino,J.E.P.
The effects of four levels of dietary ractopamine (RAC) on growth, body composition and hematology of pacu, Piaractus mesopotamicus juveniles (103.6±3.3g) were studied. Fish were housed into 12 circular tanks of 1 m3 - 15 fish per tank - and fed for 60 days with practical diets supplemented with 0; 10; 20 or 40mg RAC per kg of diet, in a totally randomized design trial (n=3). Fish fed diets containing up to 40mg RAC/kg diet for 60 days did not have improved growth or body composition parameters. There were no significant differences in hematocrit, hemoglobin and mean corpuscular hemoglobin. Plasma glucose and triglycerides were significantly smaller in fish fed with RAC; however no significant differences between RAC levels were detected. The inclusion of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish; Feed additive; Repartitioning agents; Piaractus mesopotamicus; Nutrition; Hematological parameters.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352012000500034

Effect of dietary fiber concentrates on growth performance, gut morphology and hepatic metabolic intermediates in jundiá (Rhamdia quelen)
Provedor de dados: 45
Autores: Goulart,F.R.; Lovatto,N.M.; Klinger,A.C.; Adorian,T.J.; Mombach,P.I.; Pianesso,D.; Martinelli,S.G.; Veiga,M.L.; Silva,L.P.
ABSTRACT A study was conducted to investigate the effect of Dietary Fiber Concentrates (DFCs) on growth performance, gut morphology, and hepatic metabolic intermediates in jundiá (Rhamdia quelen). At the end of the trial, growth and intestinal villus height was significantly (P&lt; 0.05) higher in fish fed diets supplemented with DFCs. However, the animals in commercial prebiotic group showed higher values for this variable compared to the other treatments. Regarding the thickness of the epithelium bowel, it was greater in the Control group compared to animals supplemented with β-glucan+mannan. Likewise, treatment with commercial prebiotic showed higher values of epithelium bowel compared to the DFCs. The fish supplemented with DFCs, had higher glycogen...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prebiotics; Rhamdia quelen; Mucilage; Pectin; Β-glucan + mannan.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000501633

Feeding frequency and growth performance of juvenile pink shrimp (Farfantepenaeus paulensis)
Provedor de dados: 45
Autores: Pontes,C. S.; Marques,L. C.; Andreatta,E. R.; Moura,R. S. T.; Henry-Silva,G. G.
ABSTRACTIt is generally believed that increasing feeding frequency has immediate benefits, including reduced nutrient leaching and increased shrimp growth. In this context, the aim this work was to evaluate the effect of feeding frequency in growth performance of Farfantepenaeus paulensis. Juveniles of Farfantepenaeus paulensis were grown for 30 days in pen enclosures, at a stocking density of 5 shrimp/m2. The shrimp were fed on feeding trays at a rate of 8% of their biomass per day, with treatments of one, two, three and four times per day, with four replicates each. The results showed no differences (5% probability) in biomass gain of F. paulensis when feed was offered two, three or four times per day. However, it was observed that the once a day...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feeding frequency; Shrimp culture; Aquaculture.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352015000501415

Effect of clenbuterol on growth performance in broilers
Provedor de dados: 45
Autores: Ortiz M.,R.; Valdivia F.,A.; Martínez R.,J.; Martínez de A.,A.
The objective of this study was to evaluate the effect of clenbuterol (CB), a beta2-adrenergic agonist, as a growth and weight gain promoter in broilers. Effects of CB were assessed, mixing it in feed at 0.0, 0.21, 0.42 and 0.84ppm, and feeding during four weeks to four groups (n=75) of 28 day-old Arbor Acres chickens. The body weight (BW) and food intake at 0, 12, 20 and 28 days of the study were recorded. Also abdominal fat (AF) and total muscle proteins were measured. Results indicate that from day 20 until the last of the experimental period (56-day-old), efficacy of CB was evident to increase growth and decrease AF deposition rates (P&lt;0.01), in a dose-response pattern, suggesting that CB has a profitable growth promoting effect in broiler chickens.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chick; Clembuterol; Muscle protein; Weight gain; Abdominal fat; Food conversion.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352000000300015

Impact of pituitary FSH purification on in vitro early folliculogenesis in goats
Provedor de dados: 47
Autores: Magalhães,D.M.; Araújo,V.R.; Lima-Verde,I.B.; Matos,M.H.T.; Silva,R.C.; Lucci,C.M.; Báo,S.N.; Campello,C.C.; Figueiredo,J.R.
Porcine pituitary follicle stimulating hormone (pFSH) is known to regulate the production of growth factors that have an essential role in early foliculogenesis. However, the effects of different preparations of pFSH on the survival and development of caprine follicles are not yet known. The aim of this study was to evaluate the effects of different pFSH (Stimufol® and Folltropin®) on the in vitro survival and growth of caprine preantral follicles. Pieces of caprine ovarian tissues were cultured for either one or seven days in a supplemented Minimum Essential Medium, alone or containing either Stimufol® (50 ng/mL) or Folltropin® (10, 50, 100 and 1000 ng/mL). Fresh control ovarian tissues as well as cultured tissued were processed for histological and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Goat; Preantral follicles; FSH; Follicular growth.
Ano: 2009
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452009000200003

Taxus globosa S. cell lines: Initiation, selection and characterization in terms of growth, and of baccatin III and paclitaxel production
Provedor de dados: 47
Autores: Barradas-Dermitz,Dulce Ma.; Hayward-Jones,Patricia M.; Mata-Rosas,Martín; Palmeros-Sánchez,Beatriz; Platas-Barradas,Oscar B. J.; Velásquez-Toledo,Rodolfo F.
Of the initial six cell lines originating from explants of Taxus globosa, or Mexican yew (stem internode, leaves and meristematic tissue), three were selected for their microbial and oxidation resistance, two from leaves and the other from stem internode. A study of their behavior, both in terms of cell growth, and of baccatin III and paclitaxel production, was developed in suspension cultures with an initially standardized biomass (fresh weight 0.23 g/L) using modified Gamborg's B5 medium, and an elicitor (methyl jasmonate), on either the first or seventh day of culture, at several levels (0, 0.1, 1, 10, 100 &amp;#956;M). In most of the conditions used, the three cell lines showed growth associated baccatin III production. The cell line from stem...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth-associated metabolites; Methyl jasmonate; Paclitaxel precursor; Secondary metabolism; Suspension cell culture.
Ano: 2010
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452010000100001

Osteogenic molecules for clinical applications: improving the BMP-collagen system
Provedor de dados: 48
Autores: Arrabal,Pilar M; Visser,Rick; Santos-Ruiz,Leonor; Becerra,José; Cifuentes,Manuel.
Among the osteogenic growth factors used for bone tissue engineering, bone morphogenetic proteins (BMPs) are the most extensively studied for use in orthopaedic surgery. BMP-2 and BMP-7 have been widely investigated for developing therapeutic strategies and are the only two approved for use in several clinical applications. Due to the chemical and biological characteristics of these molecules, their authorised uses are always in combination with a carrier based on collagen type I. Although the use of these growth factors is considered safe in the short term, the very high doses needed to obtain significant osteoinduction make these treatments expensive and their long-term safety uncertain, since they are highly pleiotropic and have the capacity to induce...
Tipo: Journal article
Palavras-chave: BMPs; Collagen; FGF-2; Growth factors; Osteogenesis; Recombinant proteins; RGD peptide.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000400013

Effects of plant growth promoting rhizobacteria (PGPR) on rooting and root growth of kiwifruit (Actinidia deliciosa) stem cuttings
Provedor de dados: 48
Autores: ERTURK,YASAR; ERCISLI,SEZAI; HAZNEDAR,AYHAN; CAKMAKCI,RAMAZAN.
The effects of plant growth promoting rhizobacteria (PGPR) on the rooting and root growth of semi-hardwood and hardwood kiwifruit stem cuttings were investigated. The PGPR used were Bacillus RC23, Paenibacillus polymyxa RC05, Bacillus subtilis OSU142, Bacillus RC03, Comamonas acidovorans RC41, Bacillus megaterium RC01 and Bacillus simplex RC19. All the bacteria showed indole-3-acetic acid (IAA) producing capacity. Among the PGPR used, the highest rooting ratios were obtained at 47.50% for semi-hardwood stem cuttings from Bacillus RC03 and Bacillus simplex RC19 treatments and 42.50% for hardwood stem cuttings from Bacillus RC03. As well, Comamonas acidovorans RC41 inoculations indicated higher value than control treatments. The results suggest that these...
Tipo: Journal article
Palavras-chave: PGPR; Stem cuttings; Kiwifruit; Rooting; Auxin.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602010000100011

Phospholipid synthesis, diacylglycerol compartmentation, and apoptosis
Provedor de dados: 48
Autores: WRIGHT,MARCIA M.; MCMASTER,CHRISTOPHER R.
Apoptosis is a means by which organisms dispose of unwanted cells without inducing an inflammatory response. Alterations in apoptosis is a common process by which cells become cancerous. Paradoxically, many cancer chemotherapeutics preferentially kill cancer cells by inducing apoptosis. Diacylglycerol is a lipid second messenger that regulates cell growth and apoptosis and is produced during signal transduction by hydrolysis of membrane phospholipids. Protein kinase Cs are a family of diacylglycerol responsive enzymes that are recruited to cellular membranes as a consequence of diacylglycerol production where they phosphorylate specific target proteins responsible for regulating cell growth. In this review, we will first summarize our current understanding...
Tipo: Journal article
Palavras-chave: Apoptosis; Diacylglycerol; Farnesol; Phorbol ester; Protein kinase C.
Ano: 2002
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602002000200014

Assessment of allelopathic properties of Aloe ferox Mill. on turnip, beetroot and carrot
Provedor de dados: 48
Autores: Arowosegbe,Sunday; Afolayan,Anthony J.
Turnip (Brassica rapa var. rapa L.), beetroot (Beta vulgaris L.) and carrot (Daucus carota L.) are common vegetables in South Africa. The allelopathic potential of aqueous leaf and root extracts of Aloe ferox Mill.- a highly valued medicinal plant- was evaluated against seed germination and seedling growth of the three vegetables in Petri dish experiments. The extracts were tested at concentrations of 2, 4, 6, 8, and 10 mg/mL. Leaf extract concentrations above 4 mg/mL inhibited the germination of all the crops, while the root extract had no significant effect on germination irrespective of concentration. Interestingly, the lowest concentration of leaf extract stimulated root length elongation of beetroot by 31.71%. Other concentrations significantly...
Tipo: Journal article
Palavras-chave: Allelopathy; Aloe ferox; Aqueous extracts; Intercrops; Vegetable crops.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602012000400006

Peroxidase and phenylalanine ammonia-lyase activities, phenolic acid contents, and allelochemicals-inhibited root growth of soybean
Provedor de dados: 48
Autores: HERRIG,VANESSA; FERRARESE,MARIA DE LOURDES L.; SUZUKI,LETÍCIA S.; RODRIGUES,JOÃO DOMINGOS; FERRARESE-FILHO,OSVALDO.
The influence of the allelochemicals ferulic (FA) and vanillic (VA) acids on peroxidase (POD, EC 1.11.1.7) and phenylalanine ammonia-lyase (PAL, EC 4.3.1.5) activities and their relationships with phenolic acid (PhAs) contents and root growth of soybean (Glycine max (L.) Merr.) were examined. Three-day-old seedlings were cultivated in nutrient solution containing FA or VA (0.1 to 1 mM) for 48 h. Both compounds (at 0.5 and 1 mM) decreased root length (RL), fresh weight (FW) and dry weight (DW) and increased PhAs contents. At 0.5 and 1 mM, FA increased soluble POD activity (18% and 47%, respectively) and cell wall (CW)-bound POD activity (61% and 34%), while VA increased soluble POD activity (33% and 17%) but did not affect CW-bound POD activity. At 1 mM, FA...
Tipo: Journal article
Palavras-chave: Roots; Phenolic acids; Phenylalanine ammonia-lyase; Peroxidase; Soybean.
Ano: 2002
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602002000100009

Screening of plant growth promoting bacteria associated with barley plants (Hordeum vulgare L.) cultivated in South Brazil
Provedor de dados: 49
Autores: Pontes,Andress P.; Souza,Rocheli de; Granada,Camille E.; Passaglia,Luciane M.P.
The occurrence of associations between bacteria and plant roots may be beneficial, neutral or detrimental. Plant growth promoting (PGP) bacteria form a heterogeneous group of beneficial microorganisms that can be found in the rhizosphere, the root surfaces or in association with host plant. The aim of this study was to isolate and characterize PGP bacteria associated to barley plants (Hordeum vulgare L.) aiming a future application as agricultural inoculant. One hundred and sixty bacterial strains were isolated from roots or rhizospheric soil of barley based on their growth in nitrogen-free selective media. They were evaluated for their ability to produce indolic compounds (ICs) and siderophores, and to solubilize tricalcium phosphate inin vitro assays....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacterial 16S rRNA gene; Inoculant; Barley; Phosphate solubilization.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000200108

Growth and extracellular laccase production in liquid cultures of Minimidochium parvum LPSC # 548 Strain
Provedor de dados: 51
Autores: Saparrat,Mario C. N.; Arambarri,Angélica M.; Balatti,Pedro A.
Minimidochium parvum LPSC # 548, a fungus isolated from litter floating on waters of Río Santiago (Provincia de Buenos Aires, Argentina) polluted with industrial effluents and crude-oil, was grown as a shaking culture on a C-limited medium to evaluate its ability to produce extracellular laccase. The effect of anthracene, CuSO4 · 5H2O, ethanol, guaiacol, humic acids, Kraft lignin, MnSO4· H2O, Tween 20 and veratryl alcohol on its growth and extracellular laccase activity levels was also analyzed. The cultures grown on basal medium produced maximum biomass (over 420 mg/100 ml) and maximum extracellular laccase activity (351.7 ±53.3 pkat/ml) after 5 days of incubation. Among the different factors tested, only the humic acids at 0.1 % (w/v) were found to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth; Laccase; Minimidochium parvum.
Ano: 2007
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722007000100006

Effect of moisture content and inoculum on the growth and conidia production by Beauveria bassiana on wheat bran
Provedor de dados: 52
Autores: Nuñez-Gaona,Oscar; Saucedo-Castañeda,Gerardo; Alatorre-Rosas,Raquel; Loera,Octavio.
The aim of the present work was to study the effect of moisture content and inoculum on the growth and conidia production by Beauveria bassiana on wheat bran (WB).The highest growth rate of B. bassiana 885.2 on WB media was obtained at a w=1.0, with no detected growth at a w &lt; 0.97. Solid-state fermentation (SSF) using WB (66% moisture; a w=1.0) achieved a maximal yield of 1.18x10 10 conidia per gram of dry substrate (gds). This yield decreased one order of magnitude with higher moisture contents or the addition of sugarcane bagasse (SCB) as a texturiser. In SSF using WB (66% humidity),the time to obtain a yield of 1x10(10) conidia/gds, referred to as t10, could be predicted using a model considering common inoculum levels and maximal yields. For...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beauveria bassiana; Wheat bran; Water activity; Texturiser; Conidial yields.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000400004

Influence of static magnetic fields on S. cerevisae biomass growth
Provedor de dados: 52
Autores: Muniz,João B.; Marcelino,Milton; Motta,Mauricio da; Schuler,Alexandre; Motta,Mauricy Alves da.
Biomass growth of Saccharomyces cerevisiae DAUFPE-1012 was studied in eight batch fermentations exposed to steady magnetic fields (SMF) running at 23ºC (± 1ºC), for 24 h in a double cylindrical tube reactor with synchronic agitation. For every batch, one tube was exposed to 220mT flow intensity SMF, produced by NdFeB rod magnets attached diametrically opposed (N to S) magnets on one tube. In the other tube, without magnets, the fermentation occurred in the same conditions. The biomass growth in culture (yeast extract + glucose 2%) was monitored by spectrometry to obtain the absorbance and later, the corresponding cell dry weight. The culture glucose concentration was monitored every two hours so as the pH, which was maintained between 4 and 5. As a result,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: S. cerevisiae; Biomass; Magnetic fields; Fermentation.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000300017

Assessment of Rice Associated Bacterial Ability to Enhance Rice Seed Germination and Rice Growth Promotion
Provedor de dados: 52
Autores: Gholamalizadeh,R.; Khodakaramian,G.; Ebadi,A. A.
ABSTRACT The application of beneficial bacteria has recently been used for sustainable agriculture. In current research, 71 bacterial isolates were obtained from rice plant and the rhizosphere soil of different paddy fields in Guilan province, Iran. After primitive investigation, 40 bacteria with typical predominant characteristics were selected. By PCR-RFLP of their 16S r-DNA gene, 8 Operational Taxonomic Units (OTUs) totally consisted of 33 isolates were obtained. From all of them, 8 isolates were selected for rice seed germination experiment, then, effective isolates were used for pot experiment to evaluate their ability for promoting rice growth. All of them were able to increase rice growth and yield, but in different potential. These tested isolates...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rice associated bacteria; Plant growth promoting bacteria; PCR-RFLP of 16S r-DNA; IAA production; Phosphate solubilizing bacteria.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100204

Relative growth and sexual maturity of the stone crab Menippe nodifrons Stimpson, 1859 (Brachyura, Xanthoidea) in southeastern Brazil
Provedor de dados: 52
Autores: Bertini,Giovana; Braga,Adriane Araújo; Fransozo,Adilson; Corrêa,Michéle de Oliveira Dias Alves; Freire,Fulvio Aurélio de Morais.
The relative growth and size at onset of morphological sexual maturity of the stone crab Menippe nodifrons were investigated. A total of 399 crabs was captured on Praia Grande and Tenório beaches at Ubatuba. Carapace width (CW) and length, cheliped propodus length and height, abdomen width in females, and gonopod length in males were recorded. In females, the abdominal width showed negative allometry for juveniles and positive allometry for adults; the puberty molt occurred at 31.6 mm CW. In males, the size at onset of morphological sexual maturity was estimated as 29.7 mm CW; the gonopod growth showed positive allometry for juveniles, and an isometric relationship for adults. The gonopod length and the abdominal width were the most appropriate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth; Sexual Maturity; Menippe; Xanthoidea.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000200011

Effect of eugenol on growth and listeriolysin o production by Listeria monocytogenes
Provedor de dados: 52
Autores: Filgueiras,Cristina Tostes; Vanetti,Maria Cristina Dantas.
The inhibitory effect of eugenol, a naturally occurring compound mainly present in the essential oil fraction of cloves, was studied on the growth and listeriolysin O (LLO) production by Listeria monocytogenes. Potassium efflux from cells promoted by eugenol was also determined after 24 h incubation in phosphate buffered saline. Eugenol promoted a delay on the growth of L. monocytogenes at concentrations of 100, 300 and 500 µg mL-1and above 800 µg mL-1 the effect was bactericidal. Production of LLO by L. monocytogenes in the presence of eugenol was reduced 80-100%. An accumulation of external K+ was observed above 300 µg mL-1 of eugenol which indicated that the cell membrane was affected. The results showed the effectiveness of eugenol in controlling...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eugenol; Listeria monocytogenes; Antilisteric; LLO.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000400008

Effect of proteins from the red seaweed Hypnea musciformis (Wulfen) Lamouroux on the growth of human pathogen yeasts
Provedor de dados: 52
Autores: Cordeiro,Rossana Aguiar; Gomes,Valdirene Moreira; Carvalho,Ana Fontenele Urano; Melo,Vânia Maria Maciel.
A protein fraction, rich in lectin, obtained from the red seaweed Hypnea musciformis by precipitation with ammonium sulfate (F40/70) was screened for chitinase and beta-1,3-glucanase activity and assessed for antifungal potential against the human pathogen yeasts Candida albicans and C. guilliermondii. The F40/70 fraction showed chitinase and beta-1,3-glucanase enzymes, with specific activities of 276.43 and 1880.7 Units.mg -1 protein, respectively. It was capable of inhibiting the growth of C. guilliermondii at the concentrations of 45, 100 and 450 µg protein.ml -1 but it showed only a discrete inhibition against C. albicans irrespective of the tested concentrations. The inhibitory action was shown to be fungistatic and the presence of the glycoprotein...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hypnea musciformis antifungal activity beta-1; 3-glucanase chitinase lectin.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000700008

Urban secondary sewage: an alternative medium for the culture of Tetraselmis chuii (Prasinophyceae) and Dunaliella viridis (Chlorophyceae)
Provedor de dados: 52
Autores: Costa,Rauquírio André Albuquerque Marinho da; Koening,Maria Luise; Macedo,Sílvio José de.
The effect of different concentrations (10, 20, 30 and 40%) of urban secondary sewage on the growth of Tetraselmis chuii (Prasinophyceae) and Dunaliella viridis (Chlorophyceae) was examined to verify the possibility of its use as an alternative culture medium for these species. Stocks and 700mL duplicate batch cultures were maintained under controlled laboratory conditions. 30% and 40% additions were the most efficient for the growth of both species. Statistical analysis of the adjusted growth (cell.mL-1) and biomass (µg chlorophyll-a.mL-1) curves performed using the Chi-square test (p&lt;0.05) demonstrated significant differences between the nutritive medium f/2 and the 40% addition used for these two species. The results suggested that some of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microalgae; Culture; Urban secondary sewage; Alternative medium.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000300016

Monitoring the effect of pyrene on the germination and radial growth of the wild and mutant strains of Rhizopus arrhizus UCP402
Provedor de dados: 52
Autores: Shiosaki,Ricardo Kenji; Albuquerque,Clarissa Daisy da Costa; Okada,Kaoru; Fukushima,Kazutaka; Campos-Takaki,Galba Maria.
The physiological mutant of Rhizopus arrhizus was obtained in the pyrene resistance gradient test. Comparative studies were carried out about the behavior of the germination process and the radial growth of the mutant and wild strains of R. arrhizus UCP 402. Sabouraud Sucrose and Yeast Malt Broth cultures containing pyrene (10 mg/L) induced the germination process of the sporangiospores of the wild and mutant strains of R. arrhizus. The radial growth of the strains was inversely proportional to the pyrene concentration in the culture medium. The results showed an adaptation of R. arrhizus UCP 402x (mutant) in the pyrene (50mg/L) and suggested a higher ability of application in the removal of pyrene from the contaminated areas.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pyrene; Rhizopus arrhizus; Mutant; Radial growth; Germination.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000300024

Production of polyhydroxyalkanoates (PHAs) by Bacillus subtilis and Escherichia coli grown on cane molasses fortified with ethanol
Provedor de dados: 52
Autores: Gomaa,Eman Zakaria.
The aim of this work was to study the production of polyhydroxyalkanoates (PHAs) by Bacillus subtilis and Escherichia coli isolated from the industrial contaminated soil samples using cane molasses as an inexpensive substrate. The amount of PHA accumulated followed a similar pattern to its growth for each of treatment indicating a growth-related production, yielding maximum PHA production of 54.1 and 47.16% for B. subtilis and E. coli, respectively after 96 h cultivation in the medium containing 6 and 8 % molasses, respectively and decreased thereafter. The growth and PHA yields were improved by introducing 1% ethanol into the molasses medium. Ammonium sulphate and ammonium nitrate at a concentration of 1 g/L served as the best nitrogen sources for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Polyhydroxyalkanoates; Cane molasses; Infrared spectroscopy.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000100020

Survival and the growth of pintado (Pseudoplatystoma corruscans) post-larvae on different salinities
Provedor de dados: 52
Autores: Beux,Luis Fernando; Zaniboni Filho,Evoy.
The aim of this study was to evaluate the survival and growth of pintado, Pseudoplatystoma corruscans, post-larvae (PL) submitted to seven salinities: S1: 0; S2: 1.7; S3: 3.3; S4: 5; S5: 6.7; S6: 8.3 and S7: 10‰ distributed in a complete randomized design with three replicates. PL were stocked in 5-l round plastic containers at a density of 15 PL/liter and maintained in the dark. The water was salinized with iodine-free sodium chloride (NaCl). PL were fed six times a day with 500 Artemia sp. nauplii/PL. Survival was high up to salinity 1.7‰, both on the fifth and on the tenth day of experiment, but decreased quickly in salinities above 5‰. Better growth rates were observed in salinities 0 and 1.7‰, however, high growth observed in freshwater was due to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pseudoplatystoma corruscans; Salinity; Pintado; Artemia sp.; Post-larvae; Survival.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000500010

Performance of Soybean Seedlings Upon Nutrient Application by Seed Coating
Provedor de dados: 52
Autores: Rufino,Cassyo de Araújo; Tavares,Lizandro Ciciliano; Martín-Ramos,Pablo; Fernandes-Vieira,Jucilayne; Abreu Júnior,José de Souza; Silva,Fábio Júnior Araújo; Fernandes-Correa,Marciabela; Martín-Gil,Jesús.
ABSTRACT The aim of this study was to evaluate the effect of different seed coatings consisting of various combinations of three nutrients (calcium, magnesium and silicon) on two soybean cultivars (BRS 243 RR and CD 233 RR). Dolomitic limestone and aluminum silicate were chosen as the nutrient sources. Leaf area, plant height, shoots dry matter, crop growth rate, relative growth rate and net assimilation rate were the studied variables, evincing that the seed coating that comprised calcium, magnesium and silicon led to better performance in terms of growth rates 30 days after emergence. Significant differences in the response to the seed coatings were also observed between the two studied soybean genotypes.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max (L.) Merr.; Growth rate; Leaf area; Micronutrients; Seed treatment.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100500

Conjoint effect of oil-seed cakes and Pseudomonas fluorescens on the growth of chickpea in relation to the management of plant-parasitic nematodes
Provedor de dados: 52
Autores: Rizvi,Rose; Mahmood,Irshad; Tiyagi,Sartaj A; Khan,Zehra.
Soil application of organics has been explored as an alternative means of organic management of plant-parasitic nematodes. Efficiency of different oil-seed cakes of neem (Azadirachta indica), castor (Ricinus communis), groundnut (Arachis hypogaea), linseed (Linum usitatissimum), sunflower (Helianthus annuus) and soybean (Glycine max) were evaluated in field conditions with association of Pseudomonas fluorescens in relation to growth parameters of chickpea and population of plant-parasitic nematodes. Their efficacious nature was highly effective in reducing the population of these dominant soil nematodes. Significant improvement was observed in plant-growth parameters such as plant weight, percent pollen fertility, pod numbers, root-nodulation and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chickpea; Oil-seed cakes; Organic management; Plant-parasitic nematodes; PGPR.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000600001

Pigment production and growth of Alternanthera plants cultured in vitro in the presence of tyrosine
Provedor de dados: 52
Autores: Kleinowski,Alítcia Moraes; Brandão,Isabel Rodrigues; Einhardt,Andersom Milech; Ribeiro,Márcia Vaz; Peters,José Antonio; Braga,Eugenia Jacira Bolacel.
The aim of the present study was to investigate the influence of tyrosine on the in vitro growth and the production of the betacyanin pigment in Alternanthera philoxeroides and A. tenella. Nodal segments were inoculated in MS medium containing different concentrations of tyrosine (0, 25, 50 and 75 μM), and the number of sprouts and buds, height, root length, fresh matter of shoots and roots and betacyanin content were evaluated. In A. philoxeroides , the highest production of betacyanin (51.30 mg 100 g-1 FM) was in the stems with the addition of approximately 45 μM tyrosine, while the increase in the leaves was proportional to the tyrosine concentration, and the best average was obtained with a tyrosine concentration of 75 μM (15.32 mg 100 g-1 FM). Higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Betacyanin; Elicitors; In vitro propagation; Alligator weed; Joy weed.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000200014

Erratum: Effect of Gamma Radiation on Growth and Metabolic Activities of Arthrospira platensis
Provedor de dados: 52
Tipo: Info:eu-repo/semantics/other
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100908

Regression equations between body and head measurements in the broad-snouted caiman (Caiman latirostris)
Provedor de dados: 57
Autores: VERDADE,L. M.
In the present study, regression equations between body and head length measurements for the broad-snouted caiman (Caiman latirostris) are presented. Age and sex are discussed as sources of variation for allometric models. Four body-length, fourteen head-length, and ten ratio variables were taken from wild and captive animals. With the exception of body mass, log-transformation did not improve the regression equations. Besides helping to estimate body-size from head dimensions, the regression equations stressed skull shape changes during the ontogenetic process. All age-dependent variables are also size-dependent (and consequently dependent on growth rate), which is possibly related to the difficulty in predicting age of crocodilians based on single...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Relative growth; Sexual dimorphism; Size estimates; Broad-snouted caiman; Caiman latirostris.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082000000300012

Molecular bases of growth hormone deficiency
Provedor de dados: 54
Autores: Carvallo,Pilar.
Tipo: Info:eu-repo/semantics/article
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84551997000300026

The nucleolus: a paradigm for cell proliferation and aging
Provedor de dados: 56
Autores: Comai,L.
The nucleolus is the cellular site of ribosome biosynthesis. At this site, active ribosomal DNA (rDNA) genes are rapidly transcribed by RNA polymerase I (pol I) molecules. Recent advances in our understanding of the pol I transcription system have indicated that regulation of ribosomal RNA (rRNA) synthesis is a critical factor in cell growth. Importantly, the same signaling networks that control cell growth and proliferation and are deregulated in cancer appear to control pol I transcription. Therefore, the study of the biochemical basis for growth regulation of pol I transcription can provide basic information about the nuclear signaling network. Hopefully, this information may facilitate the search for drugs that can inhibit the growth of tumor cells by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nucleolus; RNA pol I; Aging; Transcription; Werner syndrome.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999001200004

The use of genes for performance enhancement: doping or therapy?
Provedor de dados: 56
Autores: Oliveira,R.S.; Collares,T.F.; Smith,K.R.; Collares,T.V.; Seixas,F.K.
Recent biotechnological advances have permitted the manipulation of genetic sequences to treat several diseases in a process called gene therapy. However, the advance of gene therapy has opened the door to the possibility of using genetic manipulation (GM) to enhance athletic performance. In such ‘gene doping’, exogenous genetic sequences are inserted into a specific tissue, altering cellular gene activity or leading to the expression of a protein product. The exogenous genes most likely to be utilized for gene doping include erythropoietin (EPO), vascular endothelial growth factor (VEGF), insulin-like growth factor type 1 (IGF-1), myostatin antagonists, and endorphin. However, many other genes could also be used, such as those involved in glucose...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genetic manipulation; Erythropoietin; Vascular endothelial growth factor; Insulin-like growth factor-1; Myostatin; Bioethics.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011001200001

Cantharidin suppressed breast cancer MDA-MB-231 cell growth and migration by inhibiting MAPK signaling pathway
Provedor de dados: 56
Autores: Gu,X.-D.; Xu,L.-L; Zhao,H.; Gu,J.-Z; Xie,X.-H.
As an active constituent of the beetle Mylabris used in traditional Chinese medicine, cantharidin is a potent and selective inhibitor of protein phosphatase 2A (PP2A) that plays a crucial role in cell cycle progression, apoptosis, and cell fate. The role and possible mechanisms exerted by cantharidin in cell growth and metastasis of breast cancer were investigated in this study. Cantharidin was found to inhibit cell viability and clonogenic potential in a time- and dose-dependent manner. Cell cycle analysis revealed that cell percentage in G2/M phase decreased, whereas cells in S and G1 phases progressively accumulated with the increasing doses of cantharidin treatment. In a xenograft model of breast cancer, cantharidin inhibited tumor growth in a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cantharidin; Breast cancer; ERK/MAPK pathway; Growth; Migration; Invasion.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000700608

Angiotensin II-mediated vascular smooth muscle cell growth signaling
Provedor de dados: 56
Autores: Inagami,T.; Eguchi,S.
The mechanism by which Ang II stimulates the growth of vascular smooth muscle cells was investigated by measuring the phosphorylation of mitogen-activated protein kinases ERK 1 and ERK 2. Ca2+ ionophore was found to have effects practically analogous to Ang II. We found that the signaling pathway involves the activation of epidermal growth factor receptor (EGFR) kinase, activation of the adaptor proteins Shc and Grb2, and the small G-protein Ras. Although the mechanism of AT1- (or Ca2+)-induced activation of EGFR is not yet clear, we have found that calcium-dependent protein kinase CAKß/PYK2 and c-Src are involved in this process. These studies indicate a transactivation mechanism that utilizes EGFR as a bridge between a Gq-coupled receptor and activation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Angiotensin II; Type 1 receptor; Epidermal growth factor receptor; Vascular smooth muscle cells.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000600002

Vertical growth phase and positive sentinel node in thin melanoma
Provedor de dados: 56
Autores: Oliveira Filho,R.S.; Ferreira,L.M.; Biasi,L.J.; Enokihara,M.M.S.S.; Paiva,G.R.; Wagner,J.
Sentinel node (SN) status is the most important prognostic factor for localized melanoma. Usually, patients with Breslow thickness of less than 1.0 mm are not included in SN protocols. However, the literature presents a rate ranging from 3 to 7% of nodal recurrence in thin melanoma. Ulceration, regression and high mitotic rate have been considered to be indications for an SN biopsy. The metastatic potential of the vertical growth phase is uncertain. To correlate pathological features in thin melanoma with SN metastasis, we reviewed 358 patients submitted to SN biopsy. Seventy-seven patients with lesions of 1 mm or smaller were included in the study group. Histological evaluation of the primary tumor included thickness, Clark level, mitotic rate,...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Thin melanoma; Sentinel node; Lymphoscintigraphy; Immunohistochemistry; Micrometastasis.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000300009

Blastocyst-endometrium interaction: intertwining a cytokine network
Provedor de dados: 56
Autores: Castro-Rendón,W.A.; Castro-Álvarez,J.F.; Guzmán-Martinez,C.; Bueno-Sanchez,J.C.
The successful implantation of the blastocyst depends on adequate interactions between the embryo and the uterus. The development of the embryo begins with the fertilized ovum, a single totipotent cell which undergoes mitosis and gives rise to a multicellular structure named blastocyst. At the same time, increasing concentrations of ovarian steroid hormones initiate a complex signaling cascade that stimulates the differentiation of endometrial stromal cells to decidual cells, preparing the uterus to lodge the embryo. Studies in humans and in other mammals have shown that cytokines and growth factors are produced by the pre-implantation embryo and cells of the reproductive tract; however, the interactions between these factors that converge for successful...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Embryo implantation; Trophoblast; Cytokines; Prostaglandins; Aspirin.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006001100001

Plasmablastic multiple myeloma is associated with increased vascular endothelial growth factor immunoexpression
Provedor de dados: 56
Autores: Ribas,C.; Colleoni,G.W.B.; Almeida,M.S.S.; Aguiar,K.C.C.; Silva,M.R.R.; Bordin,J.O.
The biologic basis of the negative prognosis of plasmablastic myeloma is not fully understood. To determine whether histologically aggressive multiple myeloma (MM) is associated with a more angiogenic marrow environment, bone marrow samples from 50 recently diagnosed MM patients were evaluated. Twelve percent (6/50) of patients presented plasmablastic MM, and this feature correlated with moderate/strong intensity of vascular endothelial growth factor staining of plasma cells (P = 0.036). Although plasmablastic MM was not associated with increasing of microvessel density, this new evidence of increased expression of vascular endothelial growth factor on plasmablasts suggests that the adverse prognosis conferred by plasmablastic disease may be due, at least...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Multiple myeloma; Angiogenesis; Vascular endothelial growth factor.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005001100007

Inhibitory effect of Cinnamomum zeylanicum Blume (Lauraceae) essential oil and beta-pinene on the growth of dematiaceous moulds
Provedor de dados: 58
Autores: Moreira,Ana Carolina Pessoa; Lima,Edeltrudes de Oliveira; Souza,Evandro Leite de; Van Dingenen,Monique Araújo; Trajano,Vinícius Nogueira.
Dematiaceous moulds are pathogen microorganisms able to act as etiological agents of mycoses with different degrees of severity. This study evaluated the effectiveness of Cinnamomum zeylanicum Blume essential oil and beta-pinene in inhibiting the growth of various strains of dematiaceous moulds (Alternaria brassicola, Cladosporium herbarium, C. resinae, C. cladosporioides, Chaetomum globosum, Curvularia sp., Fonsecaea compacta, Piedraia hortae). Antimicrobial assays were led by determining the Minimum Inhibitory Concentration-MIC using the solid medium diffusion procedure and observing the interference of the MIC values on the mould radial mycelial growth along 14 days. MIC values found to C. zeylanicum essential oil oscillated between 63 and 125 µL/mL....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dematiaceous moulds; Cinnamomum zeylanicum Blume; Beta-pinene; Antimould activity.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000100008

Detection of trypsin inhibitor in seeds of Eucalyptus urophylla and its influence on the in vitro growth of the fungi Pisolithus tinctorius and Rhizoctonia solani
Provedor de dados: 58
Autores: Tremacoldi,Célia Regina; Pascholati,Sérgio Florentino.
Inhibitors of plant proteases can regulate the hydrolysis of proteins inside the cells and also participate in the mechanisms of plant defense against herbivore insects and pathogens. Here, we demonstrated that seeds of Eucalyptus urophylla exhibit activities of trypsin and papain inhibitors, two proteases commonly found in living cells. Low amounts of proteins of the crude protein extract of seeds and fractions partially purified by gel filtration, with inhibitory activity against trypsin, inhibited in vitro the mycelial growth of a compatible isolate of the ectomycorrhizal fungus Pisolithus tinctorius and allowed an unsatisfactory growth of another isolate from Pinus taeda, considered incompatible for this eucalyptus species. The same amounts of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Protease; Inhibitor; Trypsin; Pisolithus tinctorius; Rhizoctonia solani.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000400001

Effects of hurdle technology on Monascus ruber growth in green table olives: a response surface methodology approach
Provedor de dados: 58
Autores: Cappato,Leandro P.; Martins,Amanda M. Dias; Ferreira,Elisa H.R.; Rosenthal,Amauri.
ABSTRACT An ascomycetes fungus was isolated from brine storage of green olives of the Arauco cultivar imported from Argentina and identified as Monascus ruber. The combined effects of different concentrations of sodium chloride (3.5-5.5%), sodium benzoate (0-0.1%), potassium sorbate (0-0.05%) and temperature (30-40 °C) were investigated on the growth of M. ruber in the brine of stored table olives using a response surface methodology. A full 24 factorial design with three central points was first used in order to screen for the important factors (significant and marginally significant factors) and then a Face-Centered Central Composite Design was applied. Both preservatives prevented fungal spoilage, but potassium sorbate was the most efficient to control...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Preservatives; Monascus ruber; Face-Centered Central Composite Design; Design; Table olives.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000100112

Copper influence on polyphosphate metabolism of Cunninghamella elegans
Provedor de dados: 58
Autores: Souza,Patrícia Mendes de; Marinho,Petrusk Homero; Lima,Marcos Antônio Barbosa de; Nascimento,Aline Elesbão do; Takaki,Galba Maria de Campos.
The aim of this work was to evaluate the physiological aspects of polyphosphate metabolism of Cunninghamella elegans grown in presence of copper. The growth profile was obtained by means of biomass yields, orthophosphate consumption, polyphosphate accumulation and phosphatases activities. The results revealed the influence of copper on the growth, observed by biomass yields. Orthophosphate consumption was faster in cells grown in the presence of copper. The presence of copper in the culture medium induced polyphosphate accumulation. The polyphosphate level was almost constant in the beginning of control culture growth, and could be related to the exponential growth phase. On the other hand, the copper treated cultures exhibited a significant reduction in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cunninghamella elegans; Copper; Polyphosphate; Phosphatases.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822005000400002

Comparative study of wild and transformed salt tolerant bacterial strains on Triticum aestivum growth under salt stress
Provedor de dados: 58
Autores: Afrasayab,Shazia; Faisal,Muhammad; Hasnain,Shahida.
Eleven salt tolerant bacteria isolated from different sources (soil, plants) and their transformed strains were used to study their influence on Triticum aestivum var. Inqlab-91 growth under salt (100 mM NaCl) stress. Salt stress caused reduction in germination (19.4%), seedling growth (46%) and fresh weight (39%) in non-inoculated plants. In general, both wild and transformed strains stimulated germination, seedling growth and fresh weight in salt free and salt stressed conditions. At 100 mM NaCl, Staphylococcus xylosus ST-1 caused 25% increments in seedling length over respective control. Soluble protein content significantly enhanced (49%) under salt stress as compared to salt free control. At 100 mM NaCl parental strain PT-5 resulted about 32%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum; Plasmid; Rhizobacteria; Salinity; Auxin; Transformation.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000400013

A method to estimate the biomass of Spirulina platensis cultivated on a solid medium
Provedor de dados: 58
Autores: Pelizer,Lúcia Helena; Moraes,Iracema de Oliveira.
This paper presents a method to estimate the biomass of Spirulina cultivated on solid medium with sugarcane bagasse as a support, in view of the difficulty in determining biomass concentrations in bioprocesses, particularly those conducted in semi-solid or solid media. The genus Spirulina of the family Oscillatoriaceae comprises the group of multicellular filamentous cyanobacteria (blue-green microalgae). Spirulina is used as fish feed in aquaculture, as a food supplement, a source of vitamins, pigments, antioxidants and fatty acids. Therefore, its growth parameters are extremely important in studies of the development and optimization of bioprocesses. For studies of biomass growth, Spirulina platensis was cultured on solid medium using sugarcane bagasse...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spirulina platensis; Solid state cultivation; Estimative of biomass; Sugarcane bagasse; Protein content.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000300024

Submerged culture conditions for the production of mycelial biomass and antimicrobial metabolites by Polyporus tricholoma Mont.
Provedor de dados: 58
Autores: Vieira,Gladys Rosane Thomé; Liebl,Mariane; Tavares,Lorena Benathar Ballod; Paulert,Roberta; Smânia Júnior,Artur.
Basidiomycete fungi of the Polyporus genus are a source of secondary metabolites which are of medicinal interest as antibacterial compounds. As these substances are produced in a small amount by the fungi, the study of the cultivation conditions in vitro that could possibly optimize their production seems of major importance. The effects of glucose and lactose, pH and agitation on biomass concentration and on the specific growth rate caused by the basidiomycete Polyporus tricholoma were investigated. The initial pH (4.5, 6.5 and 8.5) was autoregulated at pH 5.5, and the agitation increased the mycelial growth and the specific growth rate. The high concentration of carbon sources (4%) increased biomass production. The lactose concentration and the absence...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Polyporus tricholoma; Specific growth rate; Antibacterial activity; Isodrimenediol.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000300029

Mutants with heteroresistance to amphotericin B and fluconazole in Candida
Provedor de dados: 58
Autores: Claudino,A.L.R.; Peixoto Junior,R.F.; Melhem,M.S.C.; Szeszs,M.W.; Lyon,J.P.; Chavasco,J.K.; Franco,M.C.
Several studies have reported the occurrence of infections caused by Candida yeasts as well as the increasing prevalence of non albicans species. The aim of the present work is focused on the obtaining of heteroresistance to amphotericin B and fluconazole in Candida species using two distinct methodologies: selection and induction. Resistant samples were obtained by selective pressure using a medium with fluconazole for growth, followed by growth in a medium with amphotericin B. The selective pressure was also created beginning with growth in amphotericin B medium followed by growth in fluconazole medium. Concomitantly, samples were submitted to the induction of resistance through cultivation in increasing concentrations of fluconazole, followed by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amphotericin B; Antifungal agents; Candida spp.; Fluconazole; Heteroresistance; Resistant mutants.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000400028

Effect of caffeine and tannins on cultivation and fructification of Pleurotus on coffee husks
Provedor de dados: 58
Autores: Fan,Leifa; Soccol,Andréa Thomaz; Pandey,Ashok; Vandenberghe,Luciana Porto de Souza; Soccol,Carlos Ricardo.
The objective of this work was to study the effect of caffeine and tannins on Pleurotus sp. cultivation and to evaluate the feasibility of using coffee husks as substrate for mushroom cultivation. Eight strains of P. ostreatus and two strains of P. sajor-caju were screened on a medium prepared from agar extract of coffee husk. Based on best mycelial growth and biomass production, the strain P. ostreatus LPB 09 was selected for detailed studies. With the increase of caffeine concentration, the mycelial growth and the biomass production decreased, and no growth was observed when concentration of caffeine was 2500 mg/L. Furthermore, Pleurotus did not degrade the caffeine, but absorbed it. Tannin under 100 mg/L in the medium stimulated the growth of mycelia,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cultivation; Pleurotus; Caffeine; Tannin; Detoxification.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000400003

Use of photocatalytic reduction to hasten preparation of culture media for saccharolytic Clostridium species
Provedor de dados: 58
Autores: Fukushima,Romualdo S.; Weimer,Paul J.; Kunz,Daniel A.
Cysteine is the preferred reducing agent used in the preparation of culture media for the growth of many strictly anaerobic microorganisms; however, redox potential reduction of cysteine is very slow, making it inconvenient if the medium is needed immediately or in large quantity. The time required to reduce culture medium containing resazurin (an indicator of reducing conditions) was dramatically shortened when the medium, after being injected with the reducing agent cysteine, was irradiated with incandescent light from a halogen lamp. Light intensity had an effect upon reduction time: tubes kept in the dark took more than 12 h to achieve the desired degree of anaerobiosis (measured spectrophotometrically by the bleaching of the indicator, resazurin)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anaerobiosis; Culture medium; Cysteine; Light; Resazurin.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000100006

Promotion of iron nutrition and growth on peanut by Paenibacillus illinoisensis and Bacillus sp. strains in calcareous soil
Provedor de dados: 58
Autores: Liu,Di; Yang,Qianqian; Ge,Ke; Hu,Xiuna; Qi,Guozhen; Du,Binghai; Liu,Kai; Ding,Yanqin.
ABSTRACT This study aimed to explore the effects of two siderophore-producing bacterial strains on iron absorption and plant growth of peanut in calcareous soil. Two siderophore-producing bacterial strains, namely, YZ29 and DZ13, isolated from the rhizosphere soil of peanut, were identified as Paenibacillus illinoisensis and Bacillus sp., respectively. In potted experiments, YZ29 and DZ13 enhanced root activity, chlorophyll and active iron content in leaves, total nitrogen, phosphorus and potassium accumulation of plants and increased the quality of peanut kernels and plant biomass over control. In the field trial, the inoculated treatments performed better than the controls, and the pod yields of the three treatments inoculated with YZ29, DZ13, and YZ29 +...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant growth-promoting rhizobacteria; Peanut; Paenibacillus illinoisensis; Siderophores; Iron.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400656

Bioinformatics based structural characterization of glucose dehydrogenase (gdh) gene and growth promoting activity of Leclercia sp. QAU-66
Provedor de dados: 58
Autores: Naveed,Muhammad; Ahmed,Iftikhar; Khalid,Nauman; Mumtaz,Abdul Samad.
Glucose dehydrogenase (GDH; EC 1.1. 5.2) is the member of quinoproteins group that use the redox cofactor pyrroloquinoline quinoine, calcium ions and glucose as substrate for its activity. In present study, Leclercia sp. QAU-66, isolated from rhizosphere of Vigna mungo, was characterized for phosphate solubilization and the role of GDH in plant growth promotion of Phaseolus vulgaris. The strain QAU-66 had ability to solubilize phosphorus and significantly (p &lt; 0.05) promoted the shoot and root lengths of Phaseolus vulgaris. The structural determination of GDH protein was carried out using bioinformatics tools like Pfam, InterProScan, I-TASSER and COFACTOR. These tools predicted the structural based functional homology of pyrroloquinoline quinone domains...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glucose dehydrogenase; Pyrroloquinoline quinone; Leclercia sp; PGPR; Bioinformatics.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000200031

Mycelial growth of strains of Pleurotus ostreatus developed on agar and its correlation with the productivity in pilot production farm
Provedor de dados: 58
Autores: Sastre-Ahuatzi,M.; Téllez-Téllez,M.; Díaz-Godínez,G.; Montiel-González,A.M.; Díaz,R.; Sánchez,C.
Radial growth rate, intracellular laccases and proteases activities, and protein content were evaluated in five strains of Pleurotus ostreatus, grown on starch-based and glucose-based agar media containing different concentrations of the glucose analogue 2-deoxyglucose (2-DG). Productivity of the strains in pilot scale cultivation was also determined. The mycelium of four strains had approximately between 0.6- to 3-fold higher protein content when grown on glucose medium containing 0.01 g/L of 2-DG than when grown on glucose medium. The radial growth rate and intracellular laccases activity of some strains showed a positive and a negative correlation with the productivity, respectively. These results suggest that the strains with high radial growth rate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pleurotus ostreatus; 2-deoxyglucose; Laccases activity; Proteases activity; Mushroom production.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000300035

A novel acidophilic, thermophilic iron and sulfur-oxidizing archaeon isolated from a hot spring of tengchong, yunnan, China
Provedor de dados: 58
Autores: Ding,Jiannan; Zhang,Ruiyong; Yu,Yizun; Jin,Decai; Liang,Changli; Yi,Yang; Zhu,Wei; Xia,Jinlan.
A novel thermoacidophilic iron and sulfur-oxidizing archaeon, strain YN25, was isolated from an in situ enriched acid hot spring sample collected in Yunnan, China. Cells were irregular cocci, about 0.9-1.02 µm×1.0-1.31 µm in the medium containing elemental sulfur and 1.5-2.22 µm×1.8-2.54 µm in ferrous sulfate medium. The ranges of growth and pH were 50-85 (optimum 65) and pH 1.0-6.0 (optimum 1.5-2.5). The acidophile was able to grow heterotrophically on several organic substrates, including various monosaccharides, alcohols and amino acids, though the growth on single substrate required yeast extract as growth factor. Growth occurred under aerobic conditions or via anaerobic respiration using elemental sulfur as terminal electron acceptor. Results of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Isolation; Identification; Acidianus manzaensis; Bioleaching.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000200016

Characterization of Bacillus isolates of potato rhizosphere from andean soils of Peru and their potential PGPR characteristics
Provedor de dados: 58
Autores: Calvo,Pamela; Ormeño-Orrillo,Ernesto; Martínez-Romero,Esperanza; Zúñiga,Doris.
Bacillus spp. are well known rhizosphere residents of many crops and usually show plant growth promoting (PGP) activities that include biocontrol capacity against some phytopatogenic fungi. Potato crops in the Andean Highlands of Peru face many nutritional and phytophatogenic problems that have a significant impact on production. In this context is important to investigate the natural presence of these microorganisms in the potato rhizosphere and propose a selective screening to find promising PGP strains. In this study, sixty three Bacillus strains isolated from the rhizosphere of native potato varieties growing in the Andean highlands of Peru were screened for in vitro antagonism against Rhizoctonia solani and Fusarium solani. A high prevalence (68%) of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacillus; Plant growth-promoting rhizobacteria; Potato; Antagonism; Phosphate solubilization; 16S rRNA gene.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000400008

Contribution of dark septate fungi to the nutrient uptake and growth of rice plants
Provedor de dados: 58
Autores: Vergara,Carlos; Araujo,Karla Emanuelle Campos; Alves,Luiziene Soares; Souza,Sônia Regina de; Santos,Leandro Azevedo; Santa-Catarina,Claudete; Silva,Krisle da; Pereira,Gilmara Maria Duarte; Xavier,Gustavo Ribeiro; Zilli,Jerri Édson.
ABSTRACT The use of dark septate fungi (DSE) to promote plant growth can be beneficial to agriculture, and these organisms are important allies in the search for sustainable agriculture practices. This study investigates the contribution of dark septate fungi to the absorption of nutrients by rice plants and their ensuing growth. Four dark septate fungi isolates that were identified by Internal transcribed spacer phylogeny were inoculated in rice seeds (Cv. Piauí). The resulting root colonization was estimated and the kinetic parameters Vmax and Km were calculated from the nitrate contents of the nutrient solution. The macronutrient levels in the shoots, and the NO3--N, NH4+-N, free amino-N and soluble sugars in the roots, sheathes and leaves were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oryza sativa L.; DSE; NO3−-N; Tillering; Colonization.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000100067

The osmoprotective effect of some organic solutes on Streptomyces sp. mado2 and nocardiopsis sp. mado3 growth
Provedor de dados: 58
Autores: Ameur,Hanane; Ghoul,Mostefa; Selvin,Joseph.
The response of two marine actinomycetes such as Streptomyces sp. MADO2 and Nocardiopsis sp. MADO3 to osmotic stress in minimal medium M63 and in glycerol-asparagine medium (ISP5) was studied. The two strains were moderately halophilic and the behavior of the strain Streptomyces sp. MADO2 and Nocardiopsis sp. MADO3 towards the salt stress was varied depends on the media composition and the salinity concentration. The strain Streptomyces sp. was more sensitive to salt stress than Nocardiopsis sp. The growth of both Streptomyces sp. and Nocardiopsis sp. were inhibited at 1 M NaCl irrespective of the medium used. The Nocardiopsis sp. acquired osmoadaptation on ISP5 medium whereas the Streptomyces sp. showed poor growth on M63 medium. Glycine betaine (GB),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Streptomyces sp.; Nocardiopsis sp.; Osmoprotective effect; M63 medium; ISP5 medium.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000200019

Growth kinetics, effect of carbon substrate in biosynthesis of mcl-PHA by Pseudomonas putida Bet001
Provedor de dados: 58
Autores: Gumel,A.M.; Annuar,M.S.M.; Heidelberg,T.
Growth associated biosynthesis of medium chain length poly-3-hydroxyalkanoates (mcl-PHA) in Pseudomonas putida Bet001 isolated from palm oil mill effluent was studied. Models with substrate inhibition terms described well the kinetics of its growth. Selected fatty acids (C8:0 to C18:1) and ammonium were used as carbon and nitrogen sources during growth and PHA biosynthesis, resulting in PHA accumulation of about 50 to 69% (w/w) and PHA yields ranging from 10.12 g L-1 to 15.45 g L-1, respectively. The monomer composition of the PHA ranges from C4 to C14, and was strongly influenced by the type of carbon substrate fed. Interestingly, an odd carbon chain length (C7) monomer was also detected when C18:1 was fed. Polymer showed melting temperature (Tm) of 42.0...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biopolymers; Kinetics; Polyesters; Polyhydroxyalkanoates; Pseudomonas.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000200009

Growth and enzymatic responses of phytopathogenic fungi to glucose in culture media and soil
Provedor de dados: 58
Autores: Costa,Beatriz de Oliveira; Nahas,Ely.
The effect of inoculation of Aspergillus flavus, Fusarium verticillioides, and Penicillium sp. in Dystrophic Red Latosol (DRL) and Eutroferric Red Latosol (ERL) soils with or without glucose on the total carbohydrate content and the dehydrogenase and amylase activities was studied. The fungal growth and spore production in culture medium with and without glucose were also evaluated. A completely randomized design with factorial arrangement was used. The addition of glucose in the culture medium increased the growth rate of A. flavus and Penicillium sp. but not of F. verticillioides. The number of spores increased 1.2 for F. verticillioides and 8.2 times for A. flavus in the medium with glucose, but was reduced 3.5 times for Penicillium sp. The total...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fusarium verticillioides; Aspergillus flavus; Penicillium sp; Dehydrogenase; Amylase.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000100039

Bacterial selection for biological control of plant disease: criterion determination and validation
Provedor de dados: 58
Autores: Mota,Monalize Salete; Gomes,Cesar Bauer; Souza Júnior,Ismail Teodoro; Moura,Andréa Bittencourt.
Abstract This study aimed to evaluate the biocontrol potential of bacteria isolated from different plant species and soils. The production of compounds related to phytopathogen biocontrol and/or promotion of plant growth in bacterial isolates was evaluated by measuring the production of antimicrobial compounds (ammonia and antibiosis) and hydrolytic enzymes (amylases, lipases, proteases, and chitinases) and phosphate solubilization. Of the 1219 bacterial isolates, 92% produced one or more of the eight compounds evaluated, but only 1% of the isolates produced all the compounds. Proteolytic activity was most frequently observed among the bacterial isolates. Among the compounds which often determine the success of biocontrol, 43% produced compounds which...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rhizobacteria; Antibiosis; Mesocriconema xenoplax; Obligate parasites; Perennial plants.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100062

Plant growth promoting rhizobacteria reduce aphid population and enhance the productivity of bread wheat
Provedor de dados: 58
Autores: Naeem,Muhammad; Aslam,Zubair; Khaliq,Abdul; Ahmed,Jam Nazir; Nawaz,Ahmad; Hussain,Mubshar.
Abstract Plant growth promoting rhizobacteria increase plant growth and give protection against insect pests and pathogens. Due to the negative impact of chemical pesticides on environment, alternatives to these chemicals are needed. In this scenario, the biological methods of pest control offer an eco-friendly and an attractive option. In this study, the effect of two plant growth promoting rhizobacterial strains (Bacillus sp. strain 6 and Pseudomonas sp. strain 6K) on aphid population and wheat productivity was evaluated in an aphid susceptible (Pasban-90) and resistant (Inqlab-91) wheat cultivar. The seeds were inoculated with each PGPR strain, separately or the combination of both. The lowest aphid population (2.1 tiller−1), and highest plant height...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pseudomonas; Bacillus; Aphid; Bread wheat; PGPR; Eco-friendly.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000500009

Effect of surfactants and temperature on germination and vegetative growth of Beauveria bassiana
Provedor de dados: 58
Autores: Mwamburi,Lizzy A.; Laing,Mark D.; Miller,Ray M.
Three non-ionic surfactants: Tween20, Tween80 and Breakthru® were screened for their effects on spore germination and mycelial growth rates and for their influence on three isolates of Beauveria bassianaspore germination at various temperatures. Tween20 and Tween80 were compatible with all the B. bassiana isolates in the germination studies, but inhibited germination at higher surfactant concentrations, irrespective of the conidial concentrations. Breakthru® had an inhibitory effect on germination even at the lowest concentration of 0.1% on all the B. bassiana isolates. The effects of the surfactants on spore germination did not correspond with their effects on colony growth. Conidial viability within the same formulation declined significantly with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beauveria bassiana; Surfactant; Temperature; Conidia germination; Mycelial growth.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000100067

Costus root aqueous extract modulates rat liver toxicity, DNA damage, injury, proliferation alterations induced by plant growth regulator Ethephon
Provedor de dados: 60
Autores: Tousson,Ehab; El-Atrsh,Afaf; Mansour,Merfaat; Assem,Abdallah.
Ethephon (Ethrel®) is an ethylene-based plant growth regulator that used in agriculture and it has direct and indirect effects on human health, direct effect via its inhalation during usage in agriculture and indirect effect through the diet (Fruits and vegetables) that is sprayed with it. The current study aimed to examine the possible modifying effects of costus (Saussurea lappa) root aqueous extract against Ethephon induced liver toxicity, injury, DNA fragmentation and PCNA alterations in male rats. Fifty adult male rats were divided into 5 groups (1st, control; 2nd, Costus; 3rd, Ethephon; 4th, Post treated Ethephon with costus; 5th, self-healing Ethephon). Current results revealed that; a significant increase in aspartate transaminase (AST), alanine...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant growth regulator; Ethephon; Costus; Liver; DNA damage; PCNA expression; Rat.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100600

The effects of salt stress on growth, nitrate reduction and proline and glycinebetaine accumulation in Prosopis alba
Provedor de dados: 61
Autores: Meloni,Diego Ariel; Gulotta,Marta Rosalía; Martínez,Carlos Alberto; Oliva,Marco Antonio.
Prosopis alba (algarrobo) is one of the most important salt-tolerant legumes used in the food and furniture industries. The effects of salinity on some growth and physiological parameters in algarrrobo seedlings were investigated. 17-Day-old seedlings were subjected to three salt treatments by adding NaCl to the growth medium in 50 mmol.L-1 increments every 24 h until the final concentrations of 0, 300 and 600 mmol.L-1 were reached. Only the highest NaCl concentration affected all of the considered parameters. Thus, 600 mmol.L-1 NaCl caused a significant reduction in root and shoot growth, but an increase in the root/shoot ratio. Leaf relative water content, nitrate content and nitrate reductase activity in leaves and roots were also decreased. At 300 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycinebetaine; Nitrate reductase; Proline; Salinity.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202004000100006

Flowering and vegetative growth of olive tree submitted to pruning and paclobutrazol application
Provedor de dados: 61
Autores: Cruz,Maria C. M.; Oliveira,Adelson F.; Oliveira,Dili L.; V. Neto,João.
This work focuses on the evaluation of flowering and vegetative growth of olive tree submitted to pruning and paclobutrazol application under field conditions with low temperatures during the winter. Two-years-old olive plant variety Grappolo 575, were submitted to light pruning, removing apical dominance, before treatments application. The treatments were organized in a 4×2 factorial scheme, respective to four PBZ concentrations tested: 0, 200, 400 and 800 mg L-1 of PBZ and two plants groups, with and without pruning, in randomized block with four replications. Paclobutrazol concentrations tested did not affect the olive tree flowering. The plant vegetative growth was reduced until 60 days after paclobutrazol application. Pruning resulted in stimulation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Floral induction; Growth regulators; Management; Olea europaea L.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202011000200002

Effect of plant growth regulators on oil yield and biodiesel production of safflower (Carthamus tinctorius L.)
Provedor de dados: 61
Autores: Ullah,Faizan; Bano,Asghari.
The aim of the present investigation was to determine the effect of plant growth regulators viz., kinetin, chlorocholine chloride (CCC) and salicylic acid (SA) on achene yield and oil quality of safflower (Carthamus tinctorius L.) cv. Thori pertaining to biodiesel production. The growth regulators were applied at 10-5M as foliar spray during flowering (140 days after sowing). Kinetin was highly effective in increasing achene yield, 100 achene weight and oil refractive index. Maximum achene oil content was found in CCC treatment. Kinetin and CCC significantly decreased oil acid value, free fatty acid content (% oleic acid) and specific gravity but increased oil pH. Kinetin was highly effective in increasing oleic acid (C18:1) but decreased the content of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiesel; Plant growth regulators; Safflower; Oil quality.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202011000100005

Evaluation of physiological traits in upland rice for adaptation to no-tillage system
Provedor de dados: 61
Autores: Heinemann,Alexandre B.; Stone,Luís Fernando; Fageria,Nand K.; Castro,Lucas M. de.
In the cerrado region of Brazil, no-tillage is an alternative management practice to conserve soil and reduce cost of crop production. However, many studies have been showed that there is a decrease in the yield when upland rice is cropped in this system. Therefore, there is a need that new breeding initiatives introgress favorable traits into upland rice for no-tillage adaptation. Key traits include faster emergence, ability to germinate when deep seeded, faster root development, and early canopy closure during the vegetative stages. All those traits can be summarized as "early vigor". So, the objective of this study was to evaluate physiological traits of four contrasting parental upland rice cultivars to verify their adaptation to no-tillage system. A...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leaf area; Leaf expansion; Oryza sativa L; Shoot dry weight.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202009000200004

Moderate warm temperature improves shoot growth, affects carbohydrate status and stimulates photosynthesis of sweet orange plants
Provedor de dados: 61
Autores: Ribeiro,Rafael Vasconcelos; Machado,Eduardo Caruso; Espinoza-Núñez,Erick; Ramos,Rômulo Augusto; Machado,Daniela Favero São Pedro.
Citrus plants were grown under two thermal conditions for evaluating carbon metabolism acclimation to moderate warm temperature (30/20ºC, day/night), and its likely impact on plant growth. As reference, plants were grown at 25/20ºC, in which they were subjected to optimum temperature for photosynthesis during the diurnal period (25ºC). Higher photosynthetic rates were found at 30/20ºC as compared to 25/20ºC in both mature and young leaves, being this response associated with higher stomatal conductance. After 30 days of thermal treatment, plants grown at 30/20ºC presented higher shoot growth as compared to those at 25/20ºC. The carbohydrate concentration decreased in stem and root tissues, while it increased in leaf tissues under moderate warm conditions....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus; Biomass; Carbohydrate; Leaf gas exchange; Acclimation.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202012000100006

Growth, photosynthate partitioning and fructan accumulation in plants of Vernonia herbacea (Vell.) Rusby under two nitrogen levels
Provedor de dados: 61
Autores: Cuzzuol,Geraldo Rogério Faustini; Carvalho,Maria Angela Machado de; Zaidan,Lilian B.P.
The effect of two nitrogen concentrations on fructan accumulation and plant growth was analysed in plants of Vernonia herbacea during a year period. Plants of this species accumulate inulin-type fructans in the underground reserve organs (rhizophores). The plants were cultivated in glasshouse conditions and received weekly nutrient solutions containing 1.3 mmol.L-1 NO3- (N-limited) or 10.7 mmol.L-1 NO3- (N-sufficient). Plants treated with N-sufficient solution presented an increase in total growth with higher biomass, more but smaller leaves resulting in higher total leaf area, higher net assimilation rate, specific leaf mass and higher biomass allocation to aerial organs. In addition, these plants presented higher contents of reducing sugars and lower...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Asteraceae; Cerrado; Fructans; Underground reserve organs.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202005000400008

Essays on economic stability and growth
Provedor de dados: 121
Autores: Nicholas Kaldor; Kaldor, Nicholas.
Tipo: Text
Palavras-chave: PRECIO; IMPUESTOS.
Ano: 1960
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=1501&tab=opac&oai:flacso.org.ec:1501

Development theory and the economics of growth
Provedor de dados: 121
Autores: Jaime Ros; Ros, Jaime.
Tipo: Text
Ano: 2001
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=127429&tab=opac&oai:flacso.org.ec:127429

Growth, equality, and the mexican experience
Provedor de dados: 121
Autores: Morris, Singer; Singer, Morris.
Tipo: Text
Palavras-chave: IMPUESTOS.
Ano: 1969
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=3212&tab=opac&oai:flacso.org.ec:3212

Globalization, growth, and poverty building an inclusive world economy
Provedor de dados: 121
Autores: World Bank.
Tipo: Text
Palavras-chave: POBREZA; POBRES.
Ano: 2002
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=117401&tab=opac&oai:flacso.org.ec:117401

Introduction to modern economic growth
Provedor de dados: 121
Autores: Daron Acemoglu; Acemoglu, Daron.
Tipo: Text
Ano: 2009
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=125889&tab=opac&oai:flacso.org.ec:125889

The economics of adjustment and growth
Provedor de dados: 121
Tipo: Text
Palavras-chave: AJUSTE ESTRUCTURAL.
Ano: 2000
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=12456&tab=opac&oai:flacso.org.ec:12456

The brazilian economy growth and development
Provedor de dados: 121
Autores: Werner Baer; Baer, Werner.
Tipo: Text
Palavras-chave: BRASIL.
Ano: 2014
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134156&tab=opac&oai:flacso.org.ec:134156

How universities promote economic growth
Provedor de dados: 121
Autores: ed. por Shahid Yusuf; Kaoru Nabeshima.
Tipo: Text
Palavras-chave: UNIVERSIDADES.
Ano: 2007
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=117239&tab=opac&oai:flacso.org.ec:117239

Prosperity without growth economics for a finite planet
Provedor de dados: 121
Autores: Tim Jackson; Jackson, Tim.
Tipo: Text
Palavras-chave: DESARROLLO SUSTENTABLE.
Ano: 2009
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=125932&tab=opac&oai:flacso.org.ec:125932

Underdevelopment and economic growth studies in hungarian social and economic history
Provedor de dados: 121
Tipo: InteractiveResource
Palavras-chave: SUBDESARROLLO; HUNGRIA; PLANIFICACION ECONOMICA.
Ano: 1979
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=7322&tab=opac&oai:flacso.org.ec:7322

Theories of economic growth
Provedor de dados: 121
Tipo: Text
Ano: 1960
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=1355&tab=opac&oai:flacso.org.ec:1355

Growth, distribution, and prices
Provedor de dados: 121
Autores: Stephen A. Marglin; Marglin, Stephen A.
Tipo: Text
Palavras-chave: CAPITALISMO.
Ano: 1984
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=105067&tab=opac&oai:flacso.org.ec:105067

The economics of adjustment and growth
Provedor de dados: 121
Tipo: Text
Palavras-chave: TIPOS DE CAMBIO.
Ano: 2004
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=111065&tab=opac&oai:flacso.org.ec:111065

Political parties, growth and equality conservative and social democratic economic strategies in the world economy
Provedor de dados: 121
Autores: por Carles Boix; Boix, Carles.
Tipo: Text
Ano: 1998
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=122113&tab=opac&oai:flacso.org.ec:122113

Striving for growth after adjustment the role of capital formation
Provedor de dados: 121
Tipo: Text
Palavras-chave: AHORRO.
Ano: 1993
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=117907&tab=opac&oai:flacso.org.ec:117907

Potential effects of income redistribution on economic growth Latin American cases
Provedor de dados: 121
Tipo: Text
Palavras-chave: CONSUMO.
Ano: 1972
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=609&tab=opac&oai:flacso.org.ec:609

Alternative management of a problematic weed of wheat Avena fatua L. by metabolites of Trichoderma
Provedor de dados: 117
Autores: Javaid,Arshad; Ali,Sajjad.
Wild oat (Avena fatua L.) is a problematic weed of wheat (Triticum aestivum L.) in Pakistan. The present study was designed to evaluate the herbicidal activity of culture filtrates of four Trichoderma spp., namely T. harzianum, T. pseudokoningii, T. reesei and T. viride, against this weed species. In a laboratory bioassay, original (100%) and diluted (50%) culture filtrates of T. harzianum and T. pseudokoningii significantly reduced shoot and root growth of A. fatua seedlings. Only original culture filtrates of T. reesei exhibited significant effects, while the effect of filtrates of T. viride was insignificant against shoot and root growth of the target weed species. Generally, original concentrations of culture filtrates of all Trichoderma spp., except...
Tipo: Journal article
Palavras-chave: Alternative herbicides; Fungal metabolites.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000200004

Effect of Arbuscular Mycorrhizal Fungi Glomus spp. Inoculation on Alfalfa Growth in Soils with Copper
Provedor de dados: 117
Autores: Novoa M,Daniela; Palma S,Soledad; Gaete O,Hernán.
Soils near mining centers usually have high heavy metal (HM) levels. It has been found that some plants associated with arbuscular mycorrhizal fungi (AMF) improve growth and tolerance to HM in soils. This symbiosis is a biological resource for degraded soil recovery. The objective of this study was to determine the effect of inoculating AMF (Glomus spp.) on alfalfa (Medicago sativa L.) growth in agricultural soils with different copper (Cu) levels for degraded soil recovery. To this effect, alfalfa seeds were grown in soils from the Catemu and Casablanca valleys and inoculated with AMF. Plant height, stem diameter, and number of leaves were measured weekly. Dry matter, mycorrhizal colonization, and Cu concentration in alfalfa plant tissues were measured...
Tipo: Journal article
Palavras-chave: Mycorrhizal colonization; Soil recovery.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000200009