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| Petrolia, Daniel R.; Gowda, Prasanna H.; Mulla, David J.. |
| Agricultural nitrogen losses are the major contributor to nitrogen loads in the Mississippi River, and consequently, to the existence of a hypoxic, or dead, zone in the Gulf of Mexico. Focusing on two small agricultural watersheds in southeast Minnesota, simulation results from the Agricultural Drainage And Pesticide Management (ADAPT) model were combined with a linear-optimization model to evaluate the environmental and economic impact of alternative land-use policies for reducing nitrogen losses. Of particular importance was the studys explicit focus on agricultural subsurface (tile) drainage, which has been identified as the major pathway for agricultural nitrogen losses in the upper Midwest, and the use of drainage-focused abatement policies.... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Environmental Economics and Policy; Land Economics/Use. |
| Ano: 2005 |
URL: http://purl.umn.edu/13438 |
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| Petrolia, Daniel R.; Gowda, Prasanna H.. |
| Agricultural nitrogen is a major contributor to Gulf of Mexico hypoxia, and research has shown that agricultural subsurface tile drainage is a major carrier of nitrogen from croplands to streams and rivers. This study compares the results of abating nitrogen under a retired-land minimization policy with those of a new revenue-maximizing policy, paying particular attention to the role of tile-drained land. Findings reveal the retirement-minimizing policy resulted in more tile-drained land being retired and less being fertilizer-managed than was optimal under the net-return maximizing policy. Also, it led to a greater economic burden being shouldered by tile-drained land. Under both cases, tile drainage dominated the abatement process. |
| Tipo: Journal Article |
Palavras-chave: Abatement; ADAPT; Drainage; Hypoxia; Nitrogen; Crop Production/Industries; Land Economics/Use. |
| Ano: 2006 |
URL: http://purl.umn.edu/8621 |
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| Petrolia, Daniel R.; Gowda, Prasanna H.; Mulla, David J.. |
| Agricultural nitrogen losses are the major contributor to nitrogen loads in the Mississippi River, and consequently, to the existence of a hypoxic, or "dead", zone in the Gulf of Mexico. Focusing on two small agricultural watersheds in southwestern Minnesota, simulation results from the Agricultural Drainage And Pesticide Management (ADAPT) model were combined with a linear-optimization model to evaluate the environmental and economic impact of alternative land-use policies for reducing nitrogen losses. Of particular importance was the study's explicit focus on agricultural subsurface (tile) drainage, which has been identified as the major pathway for agricultural nitrogen losses in the upper Midwest, and the use of drainage-focused abatement policies.... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Drainage; Hypoxia; ADAPT; Nitrogen; Watershed; Environmental Economics and Policy. |
| Ano: 2005 |
URL: http://purl.umn.edu/19416 |
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