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| Registros recuperados: 169 | |
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| ANÉSIO,A.H.C.; SANTOS,M.V.; SILVEIRA,R.R.; FERREIRA,E.A.; BRAZ,T.G.S.; TUFFI SANTOS,L.D.; SANTOS,J.B.. |
| ABSTRACT This study was conducted in order to evaluate the selectivity of signal grass and congo grass, submitted to post-emergence herbicide application. The experiment was conducted under greenhouse conditions, in Diamantina, Minas Gerais state, and it was arranged in a randomized block design, with five replications. Treatments were set in factor scheme (8 x 2) + 2. Eight herbicides (nicosulfuron; clomazone; glyphosate; fluazifop-p-butyl + fomesafen; lactofen; fomesafen; fluazifop-p-butyl and mesotrione) were applied in doses recommended by the manufacturer on two fodder species: Brachiaria decumbens cv. Basilisk (signal grass) and Brachiaria ruziziensis (congo grass); in addition, there were two control samples without herbicide application, for a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria decumbens; Brachiaria ruziziensis; Grass control; Pasture; Weeds forage. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100260 |
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| Gasques, Jose Garcia; Bastos, Eliana Teles; Valdes, Constanza. |
| Este trabalho analisa o preço da terra no período 1975 a 2006, mas ocupa-se principalmente com o período mais recente, de 2000 a 2006. Para que o leitor tenha uma melhor dimensão dos preços de terras no Brasil, comparações serão realizadas com os preços de terras nos Estados Unidos em anos recentes. As principais fontes de informação são a Fundação Getúlio Vargas – FGV que fornece as informações sobre preço de venda de terras de lavouras, pastagens e preços de arrendamentos por estados, Regiões e Brasil e o Departamento de Agricultura dos Estados Unidos (USDA) que publica os preços de terras por regiões e estados. Complementarmente, são utilizadas outras fontes como a Secretaria da Agricultura e do Abastecimento do Paraná - Seab, através de seu... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Preço de Terra; Lavouras; Pastagens; Brasil; Price; Land; Crops; Pasture; Brazil; Land Economics/Use. |
| Ano: 2008 |
URL: http://purl.umn.edu/106106 |
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| McBride, William D.; Greene, Catherine R.. |
| Organic milk production has been one of the fastest growing segments of organic agriculture in the United States in recent years. Despite the growing number of organic dairy operations, the characteristics of organic dairy operations and the relative costs of organic and conventional milk production have been difficult to analyze. This study, using 2005 ARMS data for U.S. dairy operations, which include a targeted sample of organic milk producers, examines the structure, costs, and challenges of organic milk production. The analysis addresses economies of size, regional differences, and pasture use in organic milk production and compares organic and conventional milk production costs. The findings suggest that economic forces have made organic operations... |
| Tipo: Report |
Palavras-chave: Dairy; Organic; Milk production; Costs of production; Pasture; Agricultural Resource Management Survey (ARMS); Agricultural and Food Policy; Crop Production/Industries; Demand and Price Analysis; Production Economics. |
| Ano: 2009 |
URL: http://purl.umn.edu/55952 |
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| Garber, Lindsey. |
| The NAHMS Equine '98 Study was designed to provide both participants and the industry with information on the nation's equine population for education and research. The USDA's National Agricultural Statistics Service (NASS) collaborated with NAHMS to select a statistically valid sample such that inferences can be made for all places with equids and for all equids in the participating states. Included in the study were 28 states that accounted for 78.2 percent of the U.S. horses and ponies and 78.0 percent of farms with horses and ponies. NASS interviewers collected data from 2,904 participants via questionnaire from March 16 through April 10, 1998 for Part II. Contact for this paper: Lindsey Garber |
| Tipo: Report |
Palavras-chave: NAHMS; Equine; Equids; Population; Biosecurity; Animal movement; Nutrition; Pasture; Bedding; Manure; Livestock Production/Industries. |
| Ano: 1998 |
URL: http://purl.umn.edu/32769 |
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| Taylor, Philip Eugene. |
| Interest in Management Intensive Grazing (MIG) of dairy cattle has increased during the last 2 decades. Most dairy producers utilizing MIG were former confinement or non-intensive pasture operations while the others started their operation with MIG. While research publications tout the financial and other benefits of MIG, often comparing them to non-MIG dairies, and anecdotal evidence in popular farm press has shown MIG in a favorable light, comparing a MIG dairy farm to itself before and after the management switch has not been a subject of research scrutiny. Knowing the potential impact of a switch to MIG prior to making a management decision to do so would be a significant piece of information for a dairy farm to understand if contemplating such a... |
| Tipo: Thesis or Dissertation |
Palavras-chave: Dairy; Grazing; Economics; Pasture; Management; Farm; Farm Management; Livestock Production/Industries; Production Economics; Q10; Q12; Q19. |
| Ano: 2009 |
URL: http://purl.umn.edu/56008 |
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| Lubowski, Ruben N.; Vesterby, Marlow; Bucholtz, Shawn; Baez, Alba; Roberts, Michael J.. |
| This publication presents the results of the latest (2002) inventory of U.S. major land uses, drawing on data from the Census, public land management and conservation agencies, and other sources. The data are synthesized by State to calculate the use of several broad classes and subclasses of agricultural and nonagricultural land over time. The United States has a total land area of nearly 2.3 billion acres. Major uses in 2002 were forest-use land, 651 million acres (28.8 percent); grassland pasture and range land, 587 million acres (25.9 percent); cropland, 442 million acres (19.5 percent); special uses (primarily parks and wildlife areas), 297 million acres (13.1 percent); miscellaneous other uses, 228 million acres (10.1 percent); and urban land, 60... |
| Tipo: Report |
Palavras-chave: Land use; Land-use change; Agricultural land; Nonagricultural land; Cropland; Forest-use land; Forestland; Pasture; Rangeland; Rural residential land; Special uses; Urban land; Land Economics/Use. |
| Ano: 2006 |
URL: http://purl.umn.edu/7203 |
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| Ferreira,Carlas Renata Prissila Costa; Antonino,Antonio Celso Dantas; Sampaio,Everardo Valadares de Sá Barreto; Correia,Karina Guedes; Lima,José Romualdo de Sousa; Soares,Willames de Albuquerque; Menezes,Rômulo Simões Cezar. |
| ABSTRACT The CO2 emission from the soil surface, commonly referred to as soil CO2 efflux (ECO2) or soil respiration, is the sum of processes that include root respiration and microbial activity. Measuring this evolution is important to establish sustainable land use models and to estimate global fluxes of carbon, which affect climate change. Despite its importance, few measurements have been made in areas of the semiarid Brazilian Northeast region, and most of them were made using the alkali absorption method (AA), which can underestimate ECO2. Measurements using AA were compared to measurements using the infrared gas analyzer method (IRGA) over ten months (in rainy and dry seasons), during the day and night, in areas of Caatinga (xeric shrubland and thorn... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: CO2 emission; Rainy season; Dry season; Caatinga; Pasture. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100400 |
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| Melo,Vander Freitas; Orrutéa,Alessandro Góis; Motta,Antônio Carlos Vargas; Testoni,Samara Alves. |
| ABSTRACT Many Amazonian farmers use the slash-and-burn method rather than fertilization for crop production. The aim of the present study was to evaluate changes in the morphological, physical, and chemical properties of naturally fertile Inceptisols after conversion from native forest to different uses in southern Amazonia, Brazil. Land covered by dense native forest (NF) was split into four areas of 1.0 ha each. Three areas were slashed and burned and then cultivated for 11 years with coffee (CO), secondary forest (SF), and pasture (PA). Four soil profiles were sampled in each treatment (four uses × four replicates). The mean value distribution of each physical and chemical analysis was determined for different depths, and standard error bars were placed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Secondary forest; Coffee; Pasture; Slash and burn; Ash effect. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100523 |
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| Rita,Joice Cleide de Oliveira; Gama-Rodrigues,Antonio Carlos; Gama-Rodrigues,Emanuela Forestieri; Zaia,Francisco Costa; Nunes,Danielle Aparecida Duarte. |
| In unfertilized, highly weathered tropical soils, phosphorus (P) availability to plants is dependent on the mineralization of organic P (Po) compounds. The objective of this study was to estimate the mineralization of total and labile Po in soil size fractions of > 2.0, 2.0-0.25 and < 0.25 mm under leguminous forest tree species, pasture and "capoeira" (secondary forest) in the 0-10 cm layer of a Red-Yellow Latosol after 90 d of incubation. The type of vegetation cover, soil incubation time and soil size fractions had a significant effect on total P and labile P (Pi and Po) fraction contents. The total average Po content decreased in soil macroaggregates by 25 and 15 % in the > 2.0 and 2.0-0.25 mm fractions, respectively. In contrast,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bowman's extraction method; Leguminous forest tree species; Pasture; Capoeira (secondary forest). |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000500010 |
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| Carvalho,Rita de Cássia Ribeiro; Rocha,Wellington Willian; Pinto,José Cardoso; Pires,Bruno da Silva; Dias Junior,Moacir de Souza; Nunes,Ayeska Hubner Braga. |
| Pasture productivity can drop due to soil compaction caused by animal trampling. Physical and mechanical alterations are therefore extremely important indicators for pasture management. The objective of this research was to: draw and evaluate the Mohr failure line of a Red Yellow Latossol under different pasture cycles and natural forest; calculate apparent cohesion; observe possible physical alterations in this soil; and propose a correction factor for stocking rates based on shear strength properties. This study was conducted between March/2006 and March/2007 on the Experimental Farm of Fundação de Ensino Superior de Passos, in Passos, state of Minas Gerais. The total study area covered 6 ha, of which 2 ha were irrigated pasture, 2 ha non-irrigated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil compaction; Pasture; Animal trampling. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000300004 |
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| Giongo,Vanderlise; Salviano,Alessandra M.; Santos,Betina R. C. dos; Leal,Emylly F.. |
| Phosphorus (P) plays an important role in the growth of root system as well as the tillering grass, being fundamental to increase the productivity of these species. The aim of this study was to evaluate the development of buffel grass cultivars and establish critical values of P in plant and soil. The experimental set up was a 4 x 5 factorial scheme (four Cenchrus ciliaris cvs.: Biloela, Aridus, CPATSA 7754 and Pusa Giant, and five doses of P2O5 - 0, 30, 60, 90 and 120 kg ha-1) with four replications. After 90 days of cultivation, dry mass of shoot (DMS) and root (DMR) production and the P accumulation (Pacc) were determined. Soil samples to determine the P content and determination of the critical level (CriLev) were also collected. The cv. Biloela... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Critical level; Root system; Pasture. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015000100034 |
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| Costa,Emellinne Ingrid de Sousa; Carvalho,Gleidson Giordano Pinto de; Pires,Aureliano José Vieira; Dias,Carina Anunciação dos Santos; Cerutti,Weiler Giacomazza; Oliveira,Ronaldo Lopes; Barbosa,Analívia Martins; Maranhão,Camila Maida de Albuquerque. |
| This experiment was conducted to study the substitution of soybean meal with peanut cake in the supplement by assessing the feeding behavior and the interaction between the thermal environment and the physiological responses of eight crossbred cows with an average live weight of 500 kg. Cows were divided into two 4 × 4 Latin squares and managed on pasture. The peanut cake was included at the levels of 0, 330, 660, and 1,000 g kg-1 in the supplement as a replacement for soybean meal. The feeding behavior variables were not affected by the levels of peanut cake. No differences were found for the physiological parameters of the animals with the replacement of soybean meal for peanut cake in the supplements. Peanut cake can replace up to 100% soybean meal in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiesel; Idleness; Pasture; Respiratory rate; Ruminants. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015000400138 |
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| Silva,Rodrigo Gregório da; Neiva,José Neuman Miranda; Santos,Antonio Clementino dos; Cândido,Magno José Duarte; Sousa,Antonio Luiz Dias; Lopes,Marcos Neves; Silva,Rafael de Oliveira da; Carneiro,Leovegildo Caldas. |
| The objective of this study was to identify the pattern of deposition of feces by supplemented crossbred dairy cows after the lactation peak on cultivated areas under levels of intensification of the system and its effects on nitrogen cycling, with the aid of geostatistics, in the rainy period. Treatments were composed of two levels of nitrogen fertilization (equivalent to 400 and 800 kg N/ha/year) and two types of animals, according to the daily milk production. Geostatistical and descriptive analyses of the data were conducted. The data presented positive coefficients of skewness and platykurtic kurtosis. For the coefficient of variation, there was elevated alteration, with rest areas showing higher values and paddocks with a higher level of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Geostatistics; Nitrogen fertilization; Nutrient cycling; Pasture; Supplementation. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000500010 |
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| Dupas,Elisângela; Buzetti,Salatiér; Sarto,André Luis; Hernandez,Fernando Braz Tangerino; Bergamaschine,Antonio Fernando. |
| The aim of this study was to evaluate dry matter yield and nutritional value of palisade grass (Brachiaria brizantha cv. Marandu) using nitrogen doses and sprinkler irrigation in two periods of the year, aiming at reducing seasonality of forage production. It was used a randomized block design in a split-plot scheme, with five doses of nitrogen (0, 50, 100, 150, and 200 kg/ha/cut), and the sub-plots were defined by the seasons of the year (wet and dry season), with and without irrigation. During the wet season, in the plots with and without irrigation, doses of 175 and 161 kg/ha/cut promoted the highest dry matter yields. During the dry season, 171 kg ha-1N with irrigation resulted in the highest dry matter yield. During the same season, there was no... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria brizantha; Nitrogen; Pasture. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001200006 |
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| Registros recuperados: 169 | |
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