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| Mooney, Daniel F.; Roberts, Roland K.; English, Burton C.; Tyler, Donald D.; Larson, James A.. |
| Switchgrass (Panicum virgatum L.) has been identified as a model feedstock for the emerging biofuels industry. Its selection was based, in part, upon the observation that switchgrass can produce high yields in marginal production environments. This trait may become particularly valuable in coming years, as renewable fuel mandates begin to take effect and concerns over the food-versus-fuel debate increase. Relatively little research information exists about how management practices and production costs vary across different production environments. The objectives of this research were (a) to compare switchgrass yields as influenced by seeding rate and nitrogen fertilization rates in low-, intermediate-, and high-yielding switchgrass production environments,... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Crop Production/Industries; International Relations/Trade. |
| Ano: 2008 |
URL: http://purl.umn.edu/6403 |
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| Larson, James A.; Jaenicke, Edward C.; Roberts, Roland K.; Tyler, Donald D.. |
| A Just-Pope model was developed to assess tillage, nitrogen, weather, and pest effects on risk for cotton grown after alternative winter cover crops. Yield risk for cotton after hairy vetch was less than for cotton with no winter cover when no nitrogen fertilizer was used to supplement the vetch nitrogen. However, because cotton after vetch has a higher production cost, farmers growing conventionally tilled cotton may be slow to adapt because risk-return tradeoffs may be unacceptable under risk neutrality and risk aversion. For risk-averse farmers who have already adopted no tillage, cotton grown after hairy vetch is risk efficient. |
| Tipo: Journal Article |
Palavras-chave: Cover crops; Just-Pope production function; Risk; Tillage; Crop Production/Industries. |
| Ano: 2001 |
URL: http://purl.umn.edu/15458 |
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