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| Registros recuperados: 44 | |
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| Kaitibie, Simeon; Nganje, William E.; Brorsen, B. Wade; Epplin, Francis M.. |
| This study uses a Cox parametric bootstrap test to select between two specifications of the von Liebig hypothesis, a switching regression model and a non-linear mixed stochastic plateau function. The selected production function was used to determine optimal stocking density for dual-purpose winter wheat, under production and output price uncertainty. The switching regression approach was rejected in favor of the non-linear mixed stochastic plateau function. The relatively small difference in optimal stocking density between risk aversion and risk neutrality suggests that risk-aversion is much less important in explaining producer response to uncertainty than is nonlinearity in the production function. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Agribusiness. |
| Ano: 2003 |
URL: http://purl.umn.edu/22020 |
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| Mapemba, Lawrence D.; Epplin, Francis M.; Huhnke, Raymond L.. |
| The Energy Policy Act of 2005 includes a provision designed to double the production and use of ethanol in fuels by 2012, and that beginning in 2013, a minimum of 250 million gallons per year of ethanol be produced from lignocellulosic sources such as corn stover, wheat straw, and switchgrass. This study was conducted to determine the environmental and health consequences of using ethanol as an additive to gasoline. Comparisons are made among conventional gasoline (CG), a blend of 10 percent corn-ethanol and 90 percent CG (E10-corn), and a blend of 10 percent ethanol produced from lignocellulosic biomass (LCB) and 90 CG (E10-LCB). |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2006 |
URL: http://purl.umn.edu/21034 |
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| Duke, Jason C.; Epplin, Francis M.; Vitale, Jeffrey D.; Peel, Derrell S.. |
| Winter wheat may be grown in the Southern Plains either to produce grain only, or as a dual-purpose crop to produce both fall-winter forage and grain. The objective of the research is to determine expected net returns for both production systems. The estimated expected net value of the dualpurpose system stocked with steers with an initial weight of 450 pounds is from $38 to $92 per acre greater than that of the grain-only system. The economic success of dual-purpose wheat depends on a number of management factors including stocking density. |
| Tipo: Article |
Palavras-chave: Crop Production/Industries. |
| Ano: 2011 |
URL: http://purl.umn.edu/118948 |
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| Biermacher, Jon T.; Epplin, Francis M.; Brorsen, B. Wade; Solie, John B.; Raun, Bill. |
| Sensor-based precision fertilizer technologies are being developed and researched by production scientists. One such technology uses normalized difference vegetation index (NDVI) reflectance measurements of growing winter wheat plants and a nitrogen fertilizer optimization algorithm (NFOA) to determine nitrogen requirement necessary for plants to reach their yield plateau. A number of precision fertilizer application systems that use this technology are considered in this paper. A linear response stochastic plateau wheat yield function conditional on NDVI reflectance measurements is estimated and used within an expected profit-maximization framework to estimate upper bounds on the returns from the precision nitrogen application systems. The on-the-go... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Research and Development/Tech Change/Emerging Technologies. |
| Ano: 2006 |
URL: http://purl.umn.edu/21046 |
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| Nganje, William E.; Kaitibie, Simeon; Brorsen, B. Wade; Epplin, Francis M.. |
| Reasonably high stocking densities generally lead to high profit for steer grazing enterprises. However, higher stocking densities result in high microbial counts, creating food safety concerns, especially with the advent of BSE in recent years. This study explores the impact of production and output price uncertainty on optimal stocking density when microbial shedding presents a food safety problem. The optimal grazing pressure is based on the expected utility maximization framework, and a stochastic linear response and plateau production function. Results show that uncertainty and food safety problems lead to lower stocking density, and lower profits. However, reducing the potential incidence of microbial shedding guarantees future profits to the... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Food Consumption/Nutrition/Food Safety; Production Economics. |
| Ano: 2003 |
URL: http://purl.umn.edu/16602 |
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| Registros recuperados: 44 | |
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