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| Kizer, Michael A.; Stoecker, Arthur L.; Carreira, Rita I.; Hattey, Jeffory A.. |
| This study compares subsurface drip irrigation and sprinkler irrigation with respect to expected returns, aquifer life, nutrient utilization and accumulation in the production of irrigated corn using swine effluent and fresh groundwater from a depleting aquifer in the Oklahoma Panhandle. Most of the equations estimated econometrically had heteroskedasticity problems and MLE was used. The econometric estimation of a PDF of ammonia volatilization dependent on amount of nitrogen applied, for each irrigation system, was successful and is the basis for developing a stochastic chain for the soil nitrogen carryover equation. The results of the stochastic dynamic programming model are still being developed and will be presented at the conference. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Crop Production/Industries; Environmental Economics and Policy. |
| Ano: 2004 |
URL: http://purl.umn.edu/20110 |
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| Park, Seong Cheol; Vitale, Jeffrey D.; Turner, Jason Clemn; Stoecker, Arthur L.; Hattey, Jeffory A.. |
| The projected long-run increase in corn prices from $2.50 to $3.50 per bushel is expected to have a similar effect on feed prices, pushing up feed costs by as much as 50 percent. With feed costs on the rise, increasing forage production through more intensive management techniques becomes a potentially viable option. This study uses experimental data from a seven-year study in the Oklahoma Panhandle to assess the economic feasibility of intensifying forage production. Four commonly used forage grasses in the region were field tested using two alternative fertilizer sources – swine effluent and urea. The results found that only the two cool season grasses – orchard grass and wheatgrass – generated positive economic returns under intensification. |
| Tipo: Article |
Palavras-chave: Agribusiness. |
| Ano: 2011 |
URL: http://purl.umn.edu/118955 |
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