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| Registros recuperados: 70 | |
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| Bangsund, Dean A.; Leitch, Jay A.; Leistritz, F. Larry. |
| Leafy spurge (Euphorbia esula L.), a widely established exotic, noxious, perennial weed, is a major threat to the viability of commercial grazing and beneficial outputs of wildlands in the Upper Great Plains. Herbicide treatments are often recommended based upon measures of physical control rather than on economic criteria. Considering the wide geographic variation of leafy spurge infestations, the range of herbicide control alternatives, and the long-term consequences this weed creates, a need exists to assess the economics of herbicide control. A deterministic, bioeconomic model was developed to evaluate the economic viability of current herbicide control strategies for leafy spurge. Only under liberal assumptions and optimistic projections does... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Leafy spurge; Herbicides; Control; Economics; Resource /Energy Economics and Policy. |
| Ano: 1996 |
URL: http://purl.umn.edu/23314 |
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| Bangsund, Dean A.; Leitch, Jay A.; Leistritz, F. Larry. |
| Leafy spurge (Euphorbia esula L.), a widely established exotic, noxious, perennial weed, is a major threat to the viability of commercial grazing and to beneficial outputs of wildlands in the Upper Great Plains. Herbicide treatments are often recommended based upon measures of physical control rather than on economic criteria. A deterministic, bioeconomic model was developed to evaluate the economic viability of current herbicide control strategies for leafy spurge. Control viability is highly site specific but falls into three categories. First, broadcast herbicide treatment may result in positive net returns for some grazing situations, especially small infestations on highly productive land, in the Upper Great Plains. Second, treating the perimeter to... |
| Tipo: Journal Article |
Palavras-chave: Crop Production/Industries. |
| Ano: 1996 |
URL: http://purl.umn.edu/31025 |
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| Bangsund, Dean A.; Leistritz, F. Larry; Leitch, Jay A.. |
| The Leafy Spurge Biological Control program was designed to use insects and plant diseases from the plant's original European habitat to control infestations in the United States. The widespread adoption of biological agents to combat leafy spurge and the initial success in reclaiming previously infested land has prompted an evaluation of the potential future economic benefits of the biological control of leafy spurge in the Upper Midwest. Based on expert opinion and historical data, leafy spurge in Montana, North Dakota, South Dakota, and Wyoming was projected to infest 1.85 million acres, of which, 65 percent was estimated to controlled with biological agents by 2025. Based on a survey of county weed board personnel, North Dakota and Wyoming are... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Biological control; Leafy spurge; Economic impacts; Upper Midwest; Resource /Energy Economics and Policy. |
| Ano: 1997 |
URL: http://purl.umn.edu/23130 |
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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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| Registros recuperados: 70 | |
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