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| Registros recuperados: 62 | |
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| Medellín-Azuara,Josué; Howitt,Richard E.; Waller-Barrera,Cynthia; Mendoza-Espinosa,Leopoldo G.; Lund,Jay R.; Taylor,Joseph E.. |
| Irrigated agriculture is the largest water user in many regions, and agricultural water use efficiency and consumption has been studied by several authors. This paper provides a framework and application of economic valuation of water for agriculture in three regions in northern Baja California, Mexico, namely Guadalupe, Maneadero and Mexicali Valleys. Positive mathematical programming (PMP), a deductive valuation technique, was the framework used for this estimation using water delivery data reported by the National Water Commission in Mexicali, production costs and cultivated area, production factors use from the Agriculture Ministry (SAGARPA); and other data from previous studies. Analysis of the results shows that marginal economic water value in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mathematical programming; Baja California; Economic water valuation. |
| Ano: 2009 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952009000200001 |
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| Schneider, Uwe A.; McCarl, Bruce A.. |
| Policies to mitigate greenhouse gas emissions are likely to increase energy prices. Higher energy prices raise farmer costs for diesel and other fuels, irrigation water, farm chemicals, and grain drying. Simultaneously, renewable energy options become more attractive to agricultural producers. We consider both of these impacts, estimating the economic and environmental consequences of higher energy prices on U.S. agriculture. To do this we employ a price-endogenous agricultural sector model and solve that model for a range of carbon-tax-based energy price changes. Our results show mostly positive impacts on net farm income in the intermediate run. Through market price adjustments, fossil fuel costs are largely passed on to consumers. Additional farm... |
| Tipo: Journal Article |
Palavras-chave: Energy tax; Greenhouse gas policy; U.S. agricultural sector; Bioenergy; Mathematical programming; Environmental Economics and Policy. |
| Ano: 2005 |
URL: http://purl.umn.edu/10242 |
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| Dono, Gabriele; Severini, Simone. |
| This paper evaluates the possible consequences of decreasing in the amount of water provided by the irrigation board to the farms, and increasing in the unitary water charges that the irrigation board applies to the farms. The study has been conducted in a Mediterranean region of southern Italy where farmers can use water delivered by an irrigation board and by privately owned wells. The results of the analysis, performed by means of a mathematical programming model, show that in both cases farmers substitute the water supplied by the irrigation board with that extracted from farm wells. This generates an over-extraction of resources from the aquifer leading to likely negative environmental consequences. This also endangers the economic sustainability of... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Water Framework Directive; Farmers behaviour; Mathematical programming; Resource /Energy Economics and Policy. |
| Ano: 2008 |
URL: http://purl.umn.edu/43856 |
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| Huettel, Silke; Kleinhanss, Werner; Offermann, Frank. |
| This paper analyses the impacts of the 2003 CAP reform and of milk quota trade at the national level. To this end, a mathematical programming model has been further developed for Germany and extended to other main milk-producing EU member states like France. Homogeneous farm groups are built on the basis of EU Farm Accountancy Data Network. The results show that quotas will be fully used in both countries if quota trade is possible. A clear tendency in the reallocation of production from small towards large farms can be seen in all regions for France. In Germany, the redistribution of direct payments induced by the implementation of the regional scheme of decoupled payments leads to higher reductions of income in dairy & beef farms than in France. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: 2003 CAP reform; Milk quota trade; Model; Mathematical programming; International Relations/Trade. |
| Ano: 2005 |
URL: http://purl.umn.edu/24731 |
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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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| Registros recuperados: 62 | |
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