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Registros recuperados: 27
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Technical and economic indicators of milk production systems in the Caiuá sandstone region Animal Sciences
Lugão, Simony Marta Bernardo; Volsi, Bruno; Costa, Gustavo Vaz da; Almeida, Edson Luiz Diogo de; Telles, Tiago Santos.
  The aim of this study was to analyze technical and economic indicators of family milk production systems, with different technology levels, in the Caiuá sandstone area in Northwestern Paraná, Brazil. The analysis period covers the agricultural years 2002/2003 to 2013/2014. The categorization of the milk production systems was based on information from agricultural farms monitored by the Reference Network for Family Agriculture. The cost-benefit analysis method was used for the economic assessment of milk production. Based on the results, three family milk production systems were identified in the region, characterized by the use of low, medium and high intensification technologies for pasture management. The production costs per unit area were found to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Animal production; Dairy farming; Economic feasibility; Production cost..
Ano: 2018 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/42536
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Implementación del control biológico de Tetranychus merganser boudreaux, ácaro plaga del papayo en Veracruz, México. Colegio de Postgraduados
Reyes Pérez, Noel.
El presente trabajo evaluó la factibilidad técnica y económica de la implementación del control biológico de ácaros plaga de papayo en la zona productora del Centro de Veracruz. Se colectó Tetranychus merganser Boudreaux en Manlio F. Altamirano, Ver. Se incrementó sobre frijol (Phaseolus vulgaris L.) en invernadero. Se estimaron los parámetros poblacionales a cohortes de T. merganser a 19, 23, 27, 31, 33 y 35 °C y del ácaro depredador Phytoseiulus persimilis Athias-Henriot (comercial: Koppert de México, S.A.) a 27 °C en todos los casos sobre hojas de papayo, a 60 (±2)% HR y 14:10 h luz: oscuridad. T. merganser presentó valores máximos de tasa neta reproductiva (R0 = 62.38) y de tasa intrínseca de crecimiento poblacional (rm = 0.21) a 23 y 27 °C, que...
Palavras-chave: Tetranychidae; Carica papaya; Phytoseiulus persimilis; Viabilidad económica; Economic feasibility; Agroecosistemas tropicales; Doctorado.
Ano: 2012 URL: http://hdl.handle.net/10521/1690
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Economic analysis of the intercropping of lettuce and tomato in different seasons under protected cultivation Horticultura Brasileira
Cecílio Filho,Arthur Bernardes; Rezende,Bráulio Luciano A; Costa,Caciana C.
Lettuce and tomato are vegetables that can be grown in protected cultivation, under given conditions. Considering their expensive production systems, intercropping might be an excellent alternative to optimize costs. Four experiments were carried out at the São Paulo State University (UNESP), at Jaboticabal, Brazil, to study the economic viability of intercropping lettuce and tomato under protected cultivation. To set the intercropping, lettuce was transplanted 0, 10, 20, and 30 days after transplanting (DAT) tomato and vice-versa, in two seasons, namely April to September 2003 and January to June 2004, when monocultures of both vegetables were also carried out. At the first planting season, operational profits (OP) in intercropping (lettuce transplanted...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lactuca sativa; Lycopersicon esculentum; Intercropping; Protected cultivation; Economic feasibility; Profitability.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362010000300015
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Avaliação econômico-financeira de sistemas de produção orgânica de 'Niágara Rosada'. Infoteca-e
LAZZAROTTO, J. J.; MELO, G. W. B. de; ZILIO, R. A..
Dado que o desenvolvimento de sistemas de produção orgânica, em relação aos convencionais, implica em mudanças importantes na estrutura e na tecnologia empregadas, buscou-se mensurar e analisar, em condições determinísticas e de riscos, os níveis de eficiência econômica e de viabilidade financeira da produção orgânica de 'Niágara Rosada', sem e com o uso de cobertura plástica, desenvolvida pela Embrapa Uva e Vinho.
Tipo: Folhetos Palavras-chave: Niágara Rosada; Eficiência econômica; Viabilidade financeira; Cobertura plástica; Uvas do Brasil; Uva; Produção orgânica; Tecnologia; Impacto econômico; Economia agrícola; Indústria agrícola; Grapes; Organic production; Agricultural economics; Economic feasibility; Production technology.
Ano: 2014 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1003865
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Perspectivas de la explotación comercial de calamar (Illex argentinus) con poteras en el Golfo San Matías durante 2005 OceanDocs
Morsan, E.M.; Crespi, A..
El calamar del Golfo San Matías corresponde a la subpoblación desovante de primavera que ingresa al golfo en otoño y se captura hasta noviembre. En 2005, CPUE de la flota arrastrera sugiere un ingreso de calamar de similar magnitud al año 2001, con similares perspectivas para la zafra de poteros
Tipo: Report Palavras-chave: Fishing vessels statistics; Jigging; Economic feasibility; Commercial fishing; Cephalopod fisheries; Catch statistics.
Ano: 2005 URL: http://hdl.handle.net/1834/3722
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A review of potential economic mineral resources in offshore Nigeria OceanDocs
Ibe, A.C..
Previously published data and preliminary indications from research now in progress suggest the possible occurrence in offshore Nigeria of economically viable deposits of placer minerals (including heavy minerals), sand and gravel, phosphorite, glauconite, polymetalic manganese nodules etc. In addition, new stratigraphic evidence indicates the existence of potentially rich petroleum plays associated with a Tertiary canyon system in water depths beyond the limits of present exploitation. Based on the comparative geology of similar occurrences in better explored continental margins and ocean basins elsewhere, the possible origin, abundance and distribution of these resources are adduced. A brief assessment of the technology relevant to their discovery and...
Tipo: Report Palavras-chave: Economic feasibility; Offshore; Mineral resources.
Ano: 1982 URL: http://hdl.handle.net/1834/1207
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Recomendaciones para el manejo y explotación del recurso pesquero de merluza común (Merluccius hubbsi) del Golfo San Matías durante el año 1999 OceanDocs
González, R.A.; Morsan, E.M..
En este informe se aborda el análisis del estado de conservación del efectivo pesquero de merluza común (Merluccius hubbsi) del Golfo San Matías a partir de la aplicación de métodos del tipo analítico (Análisis de Cohorte). A partir de este diagnóstico (estimaciones de las tasas de mortalidad por pesca anual y del número de reclutas retrocalculado para el año 1998), se realizan proyecciones del rendimiento en peso del stock, de la biomasa total y del rendimiento en términos económicos, aplicando para ello una versión del Análisis de Rendimiento por Recluta
Tipo: Report Palavras-chave: Fishery management; Stock assessment; Yield/recruit; Recruitment; Mortality; Economic feasibility; Fishery management; Stock assessment; Mortality; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_4945.
Ano: 1999 URL: http://hdl.handle.net/1834/3721
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Recomendaciones para el manejo y explotación del recurso pesquero de merluza común (Merluccius hubbsi) del Golfo San Matías durante el año 2000 OceanDocs
González, R.G.; Morsan, E.M..
En este informe se aborda el análisis del estado de conservación del efectivo pesquero de merluza común (Merluccius hubbsi) del Golfo San Matías a partir de la metodología desarrollada en el Informe Técnico Nº 2/99 (Análisis de Cohorte de Jones basado en las tallas). Las proyecciones de rendimiento en peso del stock, de la biomasa total y del rendimiento en términos económicos y de huevos por recluta (HPR) para el 2000 se desarrollan aplicando la versión del Análisis del Rendimiento por Recluta de Thompson & Bell)
Tipo: Report Palavras-chave: Fishery resources; Stock assessment; Fishery management; Recruitment; Yield/recruit; Economic feasibility; Stock assessment; Fishery management; Fishery resources; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_2942.
Ano: 2000 URL: http://hdl.handle.net/1834/3718
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Dietary supplementation with glutamine or glutamic acid for weanling piglets PAB
Amorim,Alessandro Borges; Saleh,Mayra Anton Dib; Miassi,Gabriela de Mello; Berto,Dirlei Antonio.
Abstract: The objective of this work was to evaluate the effects of dietary glutamine and glutamic acid supplementation on carbon turnover (δ13C) in the muscles of piglets, on animal performance, and on feed economic feasibility. The diets consisted of: control (C), 1% glutamine (G), and 1% glutamic acid (GA). In experiment I, 111 piglets were used to assess carbon turnover in the Masseter, Psoas major, and Abdominal internal oblique muscles in terms of their isotopic composition and 13C substitution over time. In experiment II, 72 piglets were assigned randomly to blocks (eight replicates per treatment and three animals per experimental unit), in order to evaluate animal performance and feed economic feasibility. The GA diet promoted the best 13C...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sus scrofa; Additives; Anabolic effect; Carbon turnover; Economic feasibility; Stable isotopes.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000200229
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ECONOMIC FEASIBILITY OF BIODIESEL PRODUCTION IN NORTH DAKOTA AgEcon
Vanwechel, Tamara; Gustafson, Cole R.; Leistritz, F. Larry.
The U. S. biodiesel industry is rapidly expanding due to energy production concerns, environmental concerns, and recent legislation. The most common type of biodiesel in the United States is derived from soybean oil. Soybeans are a major crop in North Dakota and could easily supply a 5 million gallon per year biodiesel facility. Potential market segments of a biodiesel facility in North Dakota include agriculture, construction, and state fleet sectors based on current diesel use. However, with existing technology and no subsidy, biodiesel operation and investment costs for a North Dakota facility are not competitive with petroleum diesel. Using soybean oil prices of 17 cents to 25 cents per pound, the per gallon cost of producing diesel in...
Tipo: Conference Paper or Presentation Palavras-chave: Biodiesel; Soybeans; Economic feasibility; Resource /Energy Economics and Policy.
Ano: 2003 URL: http://purl.umn.edu/21928
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The Economic Impacts of Bioenergy Crop Production on U.S. Crop Production AgEcon
Torre Ugarte, Daniel de la; Walsh, Marie E.; Shapouri, Hosein; Slinsky, Stephen P..
In response to energy security concerns, alternative energy programs such as biomass energy systems are being developed to provide energy in the 21st century. For the biomass industry to expand, a variety of feedstocks will need to be utilized. Large scale production of bioenergy crops could have significant impacts on the United States agricultural sector in terms of quantities, prices and production location of traditional crops as well as farm income. Though a number of scenarios were examined to study the impact of bioenergy crop production on the agricultural sector, two cropland scenarios are presented in this report. Under the wildlife management scenario, the analysis indicates that, at $30/dry ton (dt) for switchgrass,...
Tipo: Report Palavras-chave: Alternative crops; Bioenergy crops; Biomass; Conservation Reserve Program; Crop acreage shifts; Crop budgeting; Economic feasibility; Economic impact; Hybrid poplars; Hybrid willow; POLYSYS; Switchgrass; Crop Production/Industries; Resource /Energy Economics and Policy.
Ano: 2003 URL: http://purl.umn.edu/33997
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Cost Effectiveness of Rainwater Harvesting for Groundwater Recharge in Micro-Watersheds of Kolar District of India: The Case Study of Thotli Micro-Watershed AgEcon
Nagaraj, N.; Pradhani, Umesh; Chengappa, P.G.; Basavaraj, G.; Kanwar, Ramesh S..
This study has estimated the supply augmentation of groundwater recharge due to creation of water harvesting structures and has assessed the cost-effectiveness of rainwater harvesting for groundwater recharge on watershed basis in one of the sub-watersheds of the Kolar district, Peninsular India — a typically hard-rock area. The study is based on the primary data for the year 2008-09 collected from a sample of 90 farmers having irrigation bore-wells in the selected watershed named Thotli. The study has indicated that the annual draft of irrigation water exceeds the annual recharge, causing a negative balance. On an average, the returns per rupee investment have been found to be ` 1.80 on farm pond, ` 1.78 on recharge pit and ` 1.39 on field bund. The cost...
Tipo: Journal Article Palavras-chave: Rainwater harvesting; Economic feasibility; Groundwater recharge; Watershed; Agricultural and Food Policy; Q15; Q25.
Ano: 2011 URL: http://purl.umn.edu/118229
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The Variable-Rate Input Application Decision for Multiple Inputs with Interactions AgEcon
Roberts, Roland K.; English, Burton C.; Larson, James A..
Research has evaluated the relative profitability of variable-rate (VRT) versus uniform-rate (URT) application of a single input in fields with multiple management zones. This study addresses map-based VRT decisions for multiple inputs in fields with multiple management zones. The decision-making framework is illustrated for nitrogen and water applied to irrigated cotton in fields with three management zones. Results suggest traditional methods of determining VRT application of a single input may by suboptimal if interactions exist among VRT inputs and URT inputs. Implications are that a systems approach to multiple-input VRT decisions can produce increased net returns to VRT.
Tipo: Journal Article Palavras-chave: Breakeven analysis; Cotton; Economic feasibility; Multiple-inputs; Precision farming; Variable-rate technology; Crop Production/Industries.
Ano: 2006 URL: http://purl.umn.edu/8616
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Viabilidade econômica de embalagens para laranja-de-mesa no estado de São Paulo AgEcon
Lima, Lilian Maluf de; Caixeta Filho, Jose Vicente.
This current study aims to identify the most feasible type of packages for fresh oranges, produced and commercialized in the São Paulo state. In order to do so, three studies of specific cases were considered, under the context of multi cases. It was aimed to determine the cost of processing, packaging and transporting related to the orange commercialization aimed at customers such as wholesalers, supermarkets and Supplying Centers (CEASA’s), from a Packing-House. The results presented and analyzed in this study allowed to indicate that, in general terms, there is no package more feasible economically speaking, considering its use. What was really observed was that there is a package that is more feasible for each producer considering his specific...
Tipo: Journal Article Palavras-chave: Packaging; Economic feasibility; Orange; Marketing.
Ano: 2005 URL: http://purl.umn.edu/56744
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BALANÇO ECONÔMICO DA PRODUÇÃO DE MAMONA E BALANÇO ENERGÉTICO DA OBTENÇÃO DE BIODIESEL NO ESTADO DO CEARÁ AgEcon
Braga, Francisco Laercio Pereira; Khan, Ahmad Saeed; Mera, Ruben Dario Mayorga.
Dada a necessidade de se conhecer melhor a viabilidade econômica e energética da mamona (Ricinus communis) para o Estado do Ceará, enquanto um dos maiores produtores de oleaginosas no Nordeste do Brasil, o presente trabalho foi desenvolvido com o objetivo de elaborar um balanço econômico e energético da produção de mamona para obtenção de biodiesel no Estado do Ceará. A pesquisa foi realizada nos Municípios de Boa Viagem, Tauá e Pedra Branca. Foram utilizados os dados primários recolhidos dos produtores em entrevistas diretas. Na análise da rentabilidade foram consideradas as receitas e os custos de produção por hectare nos municípios selecionados. Os principais resultados obtidos na pesquisa indicam que a produção de mamona cearense nos três municípios...
Tipo: Conference Paper or Presentation Palavras-chave: Mamona; Biodiesel; Balanço energético; Balanço econômico; Castor seed; Biodiesel; Economic feasibility; Energy balance; Crop Production/Industries.
Ano: 2008 URL: http://purl.umn.edu/109722
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Economics of Alternative Crop Production in Arid Regions AgEcon
Curtis, Kynda R.; Bishop, Carol; Harris, Thomas R..
As water resources in arid regions decline, agricultural producers are encouraged to adopt water conserving strategies. The implementation of alternative low-water use crops is one option, but is it economically feasible? Data on current and alternative crops for this study include enterprise budgets, producer interviews, and field trials in Northwestern Nevada, USA. We use WinEPIC, a Windows-based version of the EPIC model, which synthesizes both agronomics and economics, to model yields and returns of alternative crop production under differing irrigation levels. Risk analysis or the distribution of net returns to alternative crop production is also examined. This study determined that there are alternative crops that could be feasibly substituted for...
Tipo: Conference Paper or Presentation Palavras-chave: Alternative crops; Arid regions; Economic feasibility; Irrigation; WinEPIC.
Ano: 2009 URL: http://purl.umn.edu/48053
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Economics of Meat Production from the Springbuck in the Eastern Cape Karoo AgEcon
Dlamini, Thula S.; Fraser, Gavin C.G..
The feasibility of springbuck based meat production in the EC Karoo was analysed through a stochastic budgeting model, while overtly taking cost and price risk into consideration. Monte Carlo simulation of a springbuck based meat production enterprise was used to quantify the risks that would be faced by springbuck ranchers. Springbuck ranching has been proven a viable alternative in the production of highly nutritious and healthy meat (venison) that is on high demand in European markets and more recently with a promising and growing local demand as well. The results indicate that in the Eastern Cape Karoo, springbuck ranching for meat production is a viable business. As the call for more environmentally friendlier rangelands utilisation economic systems...
Tipo: Journal Article Palavras-chave: Game ranching; Springbuck ranching; Meat production; Economic feasibility; Monte Carlo simulation; Livestock Production/Industries.
Ano: 2010 URL: http://purl.umn.edu/96181
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Economic Feasibility of Kenaf Production in Three Tennessee Counties AgEcon
Bazen, Ernest F.; Roberts, Roland K.; English, Burton C..
Since the 1940s, kenaf has been viewed as a potential source of fiber, mainly for newsprint and high quality paper. Kenaf research has once again risen to the forefront due to the recent USDA tobacco buyout. Many states and farmers dependent upon tobacco revenues have been seeking alternative crops for a number of years. This study seeks to expand the current literature by examining the economic feasibility of growing kenaf within three counties in Tennessee. Nitrogen meta-yield response functions for kenaf and four traditional crops were developed for 30 soils through crop growth simulation modeling and used to compare optimal crop budgets for each soil. Results reveal that kenaf would not compete favorably with traditional crops on any soil at prices...
Tipo: Journal Article Palavras-chave: Alternative crop; Economic feasibility; Enterprise budgeting; Kenaf; Plant growth modeling; Yield response functions; Agribusiness; Crop Production/Industries.
Ano: 2006 URL: http://purl.umn.edu/62274
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ECONOMIC FEASIBILITY OF BIODIESEL PRODUCTION IN NORTH DAKOTA AgEcon
Vanwechel, Tamara; Gustafson, Cole R.; Leistritz, F. Larry.
The U. S. biodiesel industry is rapidly expanding due to energy production concerns, environmental concerns, and recent legislation. The most common type of biodiesel in the United States is derived from soybean oil. Soybeans are a major crop in North Dakota and could easily supply a 5 million gallon per year biodiesel facility. Potential market segments of a biodiesel facility in North Dakota include agriculture, construction, and state fleet sectors based on current diesel use. However, with existing technology and no subsidy, biodiesel operation and investment costs for a North Dakota facility are not competitive with petroleum diesel. Using soybean oil prices of 17 cents to 25 cents per pound, the per gallon cost of producing diesel in...
Tipo: Working or Discussion Paper Palavras-chave: Biodiesel; Soybeans; Economic feasibility; Resource /Energy Economics and Policy.
Ano: 2002 URL: http://purl.umn.edu/23565
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THE FEASIBILITY OF WETLAND RESTORATION TO REDUCE FLOODING IN THE RED RIVER VALLEY: A CASE STUDY OF THE MAPLE RIVER WATERSHED, NORTH DAKOTA AgEcon
Shultz, Steven D.; Leitch, Jay A..
The economic feasibility of alternative wetland restoration activities to store water and reduce flood damage was evaluated in the Maple River Watershed, North Dakota, a sub-watershed of the Red River of the North Watershed. The evaluation was based on recent hydrologic modeling and wetland restoration studies, the National Wetland Inventory, local land rental values, and site-specific historical flood damage. With benefit-cost ratios ranging from 0.08 to 0.13, neither simple wetland restoration based on plugging existing drains, nor restoration with outlet control devices, nor complete restoration intended to provide a full range of wetland-based environmental services were economically feasible over a 20-year future period. Peak flood stages and flood...
Tipo: Working or Discussion Paper Palavras-chave: Economic feasibility; Wetland restoration; Flooding; Red River Valley; Land Economics/Use.
Ano: 2001 URL: http://purl.umn.edu/23597
Registros recuperados: 27
Primeira ... 12 ... Última
 

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