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| Registros recuperados: 11 | |
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| Catma, Serkan; Collins, Alan R.. |
| A mixed-integer linear programming model was formulated to minimize the cost of transport and processing of excess manure in the Chesapeake Bay watershed. The results showed that primarily poultry manure was moved out of surplus counties for land application or processing. In the base model, annual cost was more than $350 million, with the bulk of the cost arising from construction of energy facilities for poultry manure. Forestland application of poultry manure had the lowest average cost, and more forestland than agricultural land was used for manure application. The lowest cost scenario was $127 million annually when constraints were removed to expand manure application on agricultural land and allow unlimited construction of composting facilities. Such... |
| Tipo: Journal Article |
Palavras-chave: Mathematical programming; Water quality; Animal manure; Composting; Environmental Economics and Policy; Resource /Energy Economics and Policy. |
| Ano: 2011 |
URL: http://purl.umn.edu/106063 |
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| D'Souza, Gerard E.; Collins, Alan R.; Benson, Matt; Borisova, Tatiana. |
| The Opequon watershed is located in northern Virginia (VA) and the eastern panhandle of West Virginia (WV). In both states, Opequon Creek is classified as impaired based on violations of bacteria, benthic and biologic standards. Both VA and WV are using Total Maximum Daily Load (TMDL) plans to improve water quality within Opequon Creek. However, these TMDL plans are at different stages with VA being completed and WV still in progress. As part of the TMDL process in VA, this research is based on a contingent valuation survey which was developed to measure the expected monetary benefits of TMDL implementation throughout the Opequon watershed. On the basis of log-likelihood tests of grouped tobit models to explain willingness-to-pay (WTP) for watershed... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2006 |
URL: http://purl.umn.edu/21195 |
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| Fritsch, David A.; Collins, Alan R.. |
| Centralized, off-farm compost facilities were evaluated as a disposal option for poultry litter. Disposal fees to growers were required to develop an economically feasible facility for a private investor. The potential for a compost facility to compete with current litter alternatives depends upon development of compost markets comparable to urban areas along with a depressed market price for litter. Given disposal fees and uncertainty associated with market development, further expansion of land application and cattle feeding disposal alternatives is recommended. |
| Tipo: Journal Article |
Palavras-chave: Agribusiness. |
| Ano: 1993 |
URL: http://purl.umn.edu/31543 |
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| Evans, Jason R.; Brown, Cheryl; Collins, Alan R.; D'Souza, Gerard E.; Rayburn, Edward B.; Sperow, Mark. |
| The U.S. market for commoditized beef is a dynamic one that has, over the last 30 years, seen decreases in per capita consumption and an increased reliance on large, integrated feedlot facilities that focus on efficient weight gain and producing carcasses deemed desirable according the USDA quality grading system. Because of the problems inherent in the conventional production system and the existence of farm-to-retail price spreads that do not favor primary cow-calf producers, analyses of alternative beef production and marketing strategies that facilitate enhanced profitability and simultaneously address surging consumer demand for specialty food products are necessary. To that end, focus of the current study was on the market potential for grass-fed... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Demand and Price Analysis; Livestock Production/Industries. |
| Ano: 2008 |
URL: http://purl.umn.edu/6209 |
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| Collins, Alan R.; Rosenberger, Randall S.; Fletcher, Jerald J.. |
| The economic value of restoring Deckers Creek in Monongalia and Preston Counties of West Virginia was determined from mail, internet and personal interview surveys. Multi-attribute, choice experiments were conducted and nested logit models were estimated to derive the economic values of full restoration for three attributes of this creek: aquatic life, swimming, and scenic quality. The relative economic values of attributes were: aquatic life > scenic quality ~ swimming. These economic values imply that respondents had the highest value for aquatic life when fully restoring Deckers Creek to a sustainable fishery rather than "put and take" fishery that can not sustain a fish population (defined as moderate restoration for aquatic life). The... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2004 |
URL: http://purl.umn.edu/20402 |
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| Registros recuperados: 11 | |
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