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| Registros recuperados: 27 | |
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| 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... |
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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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| 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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| 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: Circular Técnica (INFOTECA-E) |
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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| 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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| 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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| 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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| 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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| 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 |
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| 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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| 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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| Liu, Xiaolan; Farmer, Michael. |
| Motivated to explore sustainability of renewable energy from bio-waste, this study attempted to discover the economic feasibility of effectively utilizing the existing agricultural waste to generate bio-energy, to complement local nucleus business by meeting specific market demands while assessing the reasonable risk associated with bio-energy production for an area with heavy concentration of agricultural production and serious water constraints. Since the problems to be addressed are all location specified critical points for bio-energy generation, GIS maps are used to identify the locations and the associated attainable volumes of agricultural waste. Meanwhile, reasonable variation and distribution of attainable cotton gin waste was identified by using... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Sustainability; Bio-energy; Agricultural waste; Economic feasibility; Risk; Agribusiness; Land Economics/Use. |
| Ano: 2010 |
URL: http://purl.umn.edu/61752 |
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| Yeboah, Anthony K.; Naanwaab, Cephas B.; Yeboah, Osei-Agyeman; Owens, John Paul; Bynum, Jarvetta S.. |
| We assess the economic feasibility of a 10 MMGY biodiesel plant using a Monte Carlo Cash Flow model programmed in Excel using @Risk, a simulation and risk analysis software. The model incorporates stochastic components to capture uncertainty in the analysis. The stochastic components are mainly variables that may exhibit risk, such as input prices, output prices, and expected revenues, and these are assigned probability distributions in the model. The model is programmed with three output variables: stream of revenues, profits/loss, and the resulting net present value (NPV) over ten year forecast period. Results from the cash flow analysis show that average expected revenues from the sale of biodiesel and co-products will be $48.5 million and total... |
| Tipo: Presentation |
Palavras-chave: Economic feasibility; Biodiesel; Monte carlo simulations; Risk analysis; Sensitivity analysis.; Agribusiness; Production Economics; Resource /Energy Economics and Policy; Risk and Uncertainty. |
| Ano: 2012 |
URL: http://purl.umn.edu/119729 |
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| Registros recuperados: 27 | |
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