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Registros recuperados: 132
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Abiotic factors influencing tropical dry forests regeneration BABT
Ceccon,Eliane; Huante,Pilar; Rincón,Emanuel.
Tropical dry forests represent nearly half the tropical forests in the world and are the ecosystems registering the greatest deterioration from the anthropogenic exploitation of the land. This paper presents a review on the dynamics of tropical dry forests regeneration and the main abiotic factors influencing this regeneration, such as seasonal nature, soil fertility and humidity, and natural and anthropic disturbances. The main purpose is to clearly understand an important part of TDF succession dynamics.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Tropical dry forests; Regeneration; Disturbances; Seasonal variability; Fertility; Moisture.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000300016
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Actiflagelin, a new sperm activator isolated from Walterinnesia aegyptia venom using phenotypic screening J. Venom. Anim. Toxins incl. Trop. Dis.
El-Aziz,Tarek Mohamed Abd; Khoury,Sawsan Al; Jaquillard,Lucie; Triquigneaux,Mathilde; Martinez,Guillaume; Bourgoin-Voillard,Sandrine; Sève,Michel; Arnoult,Christophe; Beroud,Rémy; Waard,Michel De.
Abstract Background Sperm contains a wealth of cell surface receptors and ion channels that are required for most of its basic functions such as motility and acrosome reaction. Conversely, animal venoms are enriched in bioactive compounds that primarily target those ion channels and cell surface receptors. We hypothesized, therefore, that animal venoms should be rich enough in sperm-modulating compounds for a drug discovery program. Our objective was to demonstrate this fact by using a sperm-based phenotypic screening to identify positive modulators from the venom of Walterinnesia aegyptia. Methods Herein, as proof of concept that venoms contain interesting compounds for sperm physiology, we fractionated Walterinnesia aegyptia snake venom by RP-HPLC and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Snake venom; Walterinnesia aegyptia; Bioactive compounds; Fertility; Sperm motility; Venomics; Tandem mass spectrometry; De novo sequencing; Edman degradation.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992018000100301
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Additive transcriptomic variation associated with reproductive traits suggest local adaptation in a recently settled population of the Pacific oyster, Crassostrea gigas ArchiMer
Sussarellu, Rossana; Huvet, Arnaud; Lapegue, Sylvie; Quillen, Virgile; Lelong, Christophe; Cornette, Florence; Jensen, Lasse Fast; Bierne, Nicolas; Boudry, Pierre.
Background Originating from Northeast Asia, the Pacific oyster Crassostrea gigas has been introduced into a large number of countries for aquaculture purpose. Following introduction, the Pacific oyster has turned into an invasive species in an increasing number of coastal areas, notably recently in Northern Europe. Methods To explore potential adaptation of reproductive traits in populations with different histories, we set up a common garden experiment based on the comparison of progenies from two populations of Pacific oyster sampled in France and Denmark and their hybrids. Sex ratio, condition index and microarray gene expression in gonads, were analyzed in each progeny (n = 60). Results A female-biased sex-ratio and a higher condition index were...
Tipo: Text Palavras-chave: Crassostrea gigas; Adaptation; Invasiveness; Fertility; Sex-ratio; Transcriptome; Microarray.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00287/39829/38343.pdf
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Age and multiple mating effects on reproductive success of Grapholita molesta (Busck) (Lepidoptera, Tortricidae) Rev. Bras. entomol.
Morais,Rosana M. de; Redaelli,Luiza R.; Sant'Ana,Josué.
The reproductive success of the oriental peach moth was evaluated in four experiments: 1) assessment of the mating duration, fecundity, fertility and longevity of females paired with virgin and immediately mated males; 2) mating duration, spermatophore size, fecundity, fertility and longevity in females paired with virgin and up to four times mated males; 3) receptivity of females to additional copulations after mating with virgin or mated males, and the effects of this behavior in female fecundity, fertility and longevity; 4) influence of insects age in the reproductive output. Males (33%) could copulate immediately after a previous copula. They were fertile until the fourth mating, but only in the first copula they transferred the longest (1.43 ± 0.10...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Age; Copulations; Fertility; Oriental fruit moth.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262012000300009
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Age at Menarche and Related Factors in Girlsof Urban Areas of Markazi (Central) Province of Iran International Journal of Morphology
Bayat,ParvinDokht; Ghanbari,Ali; Khazaei,Mozafar; Ghorbani,Rostam; Amiri,Sara.
The age at menarche is an indicator of racial, geographical and nutritional patterns of different societies. This cross-sectional study conducted on 1223 girls aged 14-20 in the Markazi (Central) Province, Iran in 2010. In this research, the age at menarche, as the main variable, was determined for each city and compared between different cities. The statistical analyses included c2 test for determining statistically significant differences, variance analysis for determining the difference between groups, and Pearson correlation coefficient for determining the relationship between variables. The average age of first menstruation was 13.21±1.33 years in the Markazi Province, with no significant difference among the cities of the province. This age is...
Tipo: Journal article Palavras-chave: Fertility; Growth; Iran; Menarche.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000100002
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Amostragem de solo para análise de fertilidade. Infoteca-e
FARIA, C. M. B. de.
Mostra como coletar amostra de solo para determinar fertilidade.
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Amostra; Fertility; Sample.; Solo; Fertilidade.; Soil..
Ano: 1992 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/131991
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Análise de fertilidade de gemas em videira. Infoteca-e
LEAO, P. C. de S.; MASHIMA, C. H..
Introdução; Amostragem no campo; Análise da gema em microscópio estereoscópio.
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Fertility; Analysis; Grape.; Uva; Análise; Fertilidade; Gema; Vitis Vinifera.; Buds; Grapes..
Ano: 2000 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/134143
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ANALYSIS OF SOIL FERTILITY TESTING PROCEDURES USING UNIFORM, TOPOGRAPHICAL AND OTHER SITE-SPECIFIC METHODS AgEcon
Haugen, Ronald H.; Aakre, Dwight G..
This study summarizes an analysis of uniform, topographical and other site-specific soil fertility testing procedures based on observations of various crops at various locations in North Dakota and one location in Minnesota for 2001 through 2004. Results showed little difference in economic returns among the soil fertility testing methods by crop or location.
Tipo: Working or Discussion Paper Palavras-chave: Fertility; Topography; Soil testing; Site-specific; North Dakota; Land Economics/Use.
Ano: 2005 URL: http://purl.umn.edu/23580
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Anatomy of a field trial: Wood-based biochar and compost influences a Pacific Northwest soil NWISRL
Ippolito, J.A.; Grob, J; Donnelly, A.
Biochar land application research in elevated rainfall areas (980 millimeters of annual rainfall) of the U.S. Pacific Northwest is lacking. A proof-of-concept field study examined the effects of spruce-pine-fir wood chip biochar (slow pyrolysis; 450-500 degrees Celsius; 35 megagrams per hectare), dairy manure compost (105 megagrams per hectare), compost + biochar (35 and 105 megagrams per hectare, respectively), and a control (no biochar or compost) on glacially altered soil (sandy or loamy skeletal, isotonic, mesic humic or aquic Dystroxerepts) chemical properties and growth characteristics of vetch and sweet corn over a growing season. In-season liming (5.4 megagrams per hectare) occurred to raise the soil pH for adequate crop growth. Biochar, alone...
Tipo: Article Palavras-chave: Chemistry; Manure; Research methodology; Fertility.
Ano: 2015 URL: http://eprints.nwisrl.ars.usda.gov/1595/1/1553.pdf
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Avaliacao da eficiencia de fosfatos de rocha parcialmente acidulados e tratados termicamente. Infoteca-e
PEREIRA, J. R.; FARIA, C. M. B. de.
Avaliacao da eficiencia e efeito residual de diversos fosfatos em Latossolo Vermelho Amarelo do submedio Sao Francisco. Constituiu-se de dois experimentos, o primeiro foi avaliada a eficiencia dos seguintes fosfatos na produtividade do milho var. Centralmex: catalao moido, catalao 350, catalao 600, catalao tratado termicamente, patos moidos; patos 250, patos 600, patos tratado termicamente, araxa moido e araxa tratado termicamente. Foi avaliado, tambem, o efeito residual desses fosfatos atraves de dois ciclos da cultura do milho. O segundo expeimento foi realizado com as mesmas caracteristicas do anterior. Como fontes de fosforo foram usados os seguintes produtos: termofosfato goisfertil; fosfato RNC, dapinho, fosfatos parcialmente acidulados fosforico.
Tipo: Outras publicações técnicas (INFOTECA-E) Palavras-chave: Variety; Soils; Fertility; Phosphate; Fertilidade; Fosfato; Milho; Variedade; Solo; Zea Mays; Corn.
Ano: 1988 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/132825
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Avaliacao da fertilidade do solo. Infoteca-e
SILVA, D. J.; LEITE, J. P.; SILVA, M. C. L. da.
Metodos de avaliacao da fertilidade do solo; Analise do solo; Avaliacao nutricional da plantas.
Tipo: Capítulo em livro técnico (INFOTECA-E) Palavras-chave: Fertility; Analysis; Análise; Fertilidade; Solo; Soil.
Ano: 1998 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/133293
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Avaliação da fertilidade do solo do Projeto de Irrigação de Bebedouro em Petrolina. Infoteca-e
FARIA, C. M. B. de; CABRAL, F. J. G.; FERRAZ, M. L.; CHOUDHURY, E. N.; MARTINS, C. E..
Atraves da analise de solo, foi realizada uma avaliacao da fertilidade do solo em uma area de 1.100 ha do perimetro irrigado do Projeto de Irrigacao de Bebedouro, apos 13 anos de exploracao. Os dados dos elementos obtidos, foram comparados com os do solo virgem e classificados em niveis baixo, medio e alto. Quando comparado o solo em estudo com o solo virgem, houve aumento nos teores de potassio, fosforo, calcio, magnesio e da condutividade eletrica, e um decrescimo do teor de sodio, e o valor do pH praticamente nao se alterou. No que se refere a classificacao dos niveis, constatou-se que a maior parte da area do Projeto apresentou niveis altos de potassio, niveis medios de fosforo, calcio, magnesio e pH e niveis baixos de aluminio e da Capacidade de Troca...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Classificação; Brasil; Pernambuco; Petrolina; Fertility; Project.; Solo; Fertilidade; Irrigação.; Soil; Classification; Irrigation..
Ano: 1982 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/131997
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BANANA CULTIVAR TRIALS FOR FRUIT PRODUCTION, ORNAMENTAL-LANDSCAPE USE, AND ORNAMENTAL-NURSERY PRODUCTION IN SOUTH GEORGIA AgEcon
Fonsah, Esendugue Greg; Krewer, Gerard; Rieger, Mark.
North America is the largest net importer of bananas on a regional basis. The United States is still the world’'s number- one importer and consumer of bananas. U.S. companies spend approximately $1.1 billion each year on banana imports, purchasing 31.1% of total world imports (Fonsah 2002; FAO 2001). Bananas and plantains together have been rated the fourth most important crop in the world in terms of food value and food security. This research is aimed at determining the feasibility and suitability of Annual Cropping Production (ACP) for a niche market under Georgia weather conditions and, determining which cultivars have the greatest potential for ornamental-landscape use and ornamental-nursery production. Phenological and pomological sampling and data...
Tipo: Journal Article Palavras-chave: Banana; Cultivars; Input application; Fertility; Field operations; Production; Marketing; Quality; Landscape; Green industry; Finger length; Calibration; Pseudo-stem; Crop Production/Industries.
Ano: 2004 URL: http://purl.umn.edu/27149
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Bibliografia de solos. Infoteca-e
NASSAR, N. L..
Conceituação geral dos solos. Física do solo. Química do solo. Biologia do solo. Fertilidade e fertilizantes do solo. Levantamento do solo. Conservação do solo. Solos de floresta. Mineralogia do solo. Localidades geográficas. Culturas. Economica. Métodos analíticos. Aerofotogrametria, fotointerpretação e cartografia. Instrumentos e equipamentos.
Tipo: Livro técnico (INFOTECA-E) Palavras-chave: Cultivo; Biology; Fertility; Survey; Conservation; Plant; Cultivation; Analysis.; Análise; Biologia; Conservação; Fertilidade; Levantamento; Planta; Química; Solo.; Chemistry; Soil..
Ano: 1974 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/373265
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Biochar: Agronomic and environmental potential in Brazilian savannah soils AGRIAMBI
Petter,Fabiano A.; Madari,Beata E..
Due to the high activity of microorganisms, the loss of soil organic matter is high in tropical regions. This loss becomes even greater if the soil is managed improperly or when there is no technology that leverages the permanence of the soil carbon by maintaining appropriate levels of organic matter, providing chemical, physical and biological soil improvements and contributing to reduce CO2 emissions to the atmosphere. Due to its aromatic structure, biochar is a highly stable form of carbon in the soil that may contribute to the reduction of greenhouse gas emissions, such as CO2, N2O and CH4, and act as a soil conditioner, improving the physical and chemical properties of the soil. Biochar may also result in increased productivity due to the improvement...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pyrogenic carbon; Fertility; Yield; Greenhouse gas emission.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662012000700009
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Biochar elemental composition and factors influencing nutrient retention NWISRL
Ippolito, J.A.; Spokas, K.A.; Novak, J.M.; Lentz, R.D.; Cantrell, K.B..
Biochar is the carbonaceous solid byproduct of the thermochemical conversion of a carbon-bearing organic material, commonly high in cellulose, hemicelluloses, or lignin content, for the purposes of carbon sequestration and storage. More specifically, the thermal conversion process known as pyrolysis occurs when carbon-containing substances are introduced to elevated temperatures in the absence of oxygen at varying residence times, yielding biochar. Several pyrolysis techniques employed to produce biochar differ in the temperature of reaction and residence time in the reactor. Different reactor residence times are described as slow (hours to days), fast (seconds to minutes), and flash (seconds). Fast or flash pyrolysis typically occurs around 500oC with...
Tipo: Book Section Palavras-chave: Fertility; Soil quality; Fertilizer.
Ano: 2015 URL: http://eprints.nwisrl.ars.usda.gov/1590/1/1547.pdf
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Bioeconomic impact of bull breeding soundness examination in cow-calf systems R. Bras. Zootec.
Menegassi,Sílvio Renato Oliveira; Barcellos,Júlio Otávio Jardim; Lampert,Vinícius do Nascimento; Borges,João Batista Souza; Peripolli,Vanessa.
It was evaluated the bioeconomic impact of the breeding soundness evaluation on beef cattle production in southern Brazil. Two similar production systems, with and without the use of breeding soundness evaluation, were compared during 4 years in the municipality of Júlio e Castilhos. The rate of unsound bulls in the first examination was 22.8%. By performing the examination, calf production increased by 31%, 13.8 calves/bull/year and 24 kg of calves/cow/year. The benefit/cost ratio on the investment with the breeding soundness evaluation was R$ 35.84. The breeding soundness evaluation improves bioeconomic aspects of beef cow-calf systems.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Beef cattle; Efficiency; Fertility; Productivity.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000200028
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Biological aspects of Tetranychus marianae McGregor (Acari, Tetranychidae) reared on yellow passion fruit (Passiflora edulis Sims f. flavicarpa Deg.) leaves Zoologia
Noronha,Aloyséia C. da S..
The passion fruit plant is a host for several different phytophagous mites, mainly those belonging to the Tarsonemidae, Tenuipalpidae and Tetranychidae families. Among the Tetranychidae species are Tetranychus mexicanus (McGregor, 1950) and Tetranychus desertorum Banks, 1900. The occurrence of Tetranychus marianae McGregor, 1950 was detected on yellow passion fruit Passiflora edulis Sims f. flavicarpa Degener plants under field and greenhouse conditions at the headquarters of Embrapa Cassava & Fruits Tropical Research in Cruz das Almas County, State of Bahia, Northeast Brazil. Prior records of T. marianae on the passion fruit crop in Brazil as well as the biological aspects of this species are unknown. The study on the biology of T. marianae on P....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fertility; Life table; Mite; Passiflora sp.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752006000200014
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Caracterizacao dos solos e sua associacao com as fitofisionomias em uma bacia hidrografica: aspectos pedologicos e quimicos. Infoteca-e
REATTO, A.; SPERA, S. T.; CORREIA, J. R.; MILHOMEM, A. S..
A origem das formacoes savanicas e campestres do cerrado e muito discutida e alguns autores procuram explica-la em tres teorias: 1) Teoria climatica, associada com limitacao sazonal de agua durante periodos relativamente longos de estiagem; 2) Teoria biotica, resultante da acao antropica, principalmente pelo uso frequente do fogo; 3) Teoria pedologica, em que a vegetacao seria dependente do grau de fertilidade do solo. O objetivo deste trabalho foi caracterizar os solos de uma bacia hidrografica e associa-lo as principais fitofisionomias correspondentes, em uma abordagem pedologica e quimica. O local selecionado para este estudo foi a Bacia do rio Jardim, Distrito Federal. As diferentes classes de solos que ocorrem nessa bacia foram determinadas pelo...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Chemicophysical properties; Fertility; Savanna.; Bacia Hidrográfica; Cerrado; Fertilidade; Propriedade Físico-Química; Reconhecimento do Solo; Solo; Vegetação.; Soil; Soil surveys; Watersheds.; Vegetation.
Ano: 1999 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/566900
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Characterizing Soil Fertility by Ion Diffusive Flux Measurements NWISRL
Massee, T.W.; Olsen, R.A.; Skogley, E.O..
Tipo: Article Palavras-chave: Fertility; Research methodology; Mass Import - autoclassified (may be erroneous).
Ano: 1977 URL: http://eprints.nwisrl.ars.usda.gov/314/1/369.pdf
Registros recuperados: 132
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