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| Registros recuperados: 62 | |
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| Archer, David W.; Gesch, Russell W.. |
| The value of an innovative seed technology is estimated in a discrete stochastic programming framework for a representative farm in the northern Corn Belt. Temperature-activated polymer-coated seed has the potential to increase net returns by increasing yields due to early planting and use of longer season varieties, as well as reducing yield due to early planting and use of longer season varieties, as well as reducing yield loss due to delayed planting. A biophysical simulation model was used to estimate the impact of polymer-coated seed on corn and soybean yields and on field day availability for five planting periods, three crop varieties, and two tillage systems on two different soils under varying weather conditions. |
| Tipo: Journal Article |
Palavras-chave: Biophysical simulation; Corn; Mathematical programming; Soybean; Q12; C61. |
| Ano: 2003 |
URL: http://purl.umn.edu/43198 |
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| Helming, John F.M.; Peerlings, Jack H.M.. |
| A modelling system is presented and used to analyse the impact of milk quota abolishment on Dutch agriculture and economy. The modelling system consists of a regionalised, agri-environmental, partial equilibrium, mathematical programming model of agriculture supply in the Netherlands integrated into a mixed input-output model. It was found that abolition of the milk quota system has large impacts on milk production and livestock numbers and composition. The latter is explained by the strict mineral and manure policies in the Netherlands; an increase in the numbers of dairy cows leaves less room for other livestock. It is also found that, although the total effect on gross value added in the Dutch economy is limited, the effects for individual industries... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Mathematical programming; Manure markets; Input-Output; Dairy policy; Agribusiness. |
| Ano: 2002 |
URL: http://purl.umn.edu/24911 |
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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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| Havlik, Petr; Herrero, Mario; Mosnier, Aline; Obersteiner, Michael; Schmid, Erwin; Fuss, Sabine; Schneider, Uwe A.. |
| Livestock is recognized as one of the major drivers of current and future global change. This is caused on the production side, by the substantial resource requirements (land and water) per unit of output, and the related greenhouse gas emissions, and on the consumption side, by the growing demand due to population and economic growth. Our paper investigates whether productivity gains which enabled to the crop sector to satisfy the increased demand under decreasing real prices, and with little additional land, in the past decades, can be expected in the livestock sector in the future. To answer this question, we implement the recursively dynamic partial equilibrium bottom-up model of the global agriculture and forest sectors (GLOBIOM), expanded by a newly... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Mathematical programming; Livestock; Land use change; Livestock Production/Industries. |
| Ano: 2011 |
URL: http://purl.umn.edu/114552 |
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| Anderton, N.; Kingwell, Ross S.. |
| Ethanol production is increasingly commonplace in many grain producing regions. This paper uses the grain producing region of Western Australia as a case study to illustrate how the location and size of an ethanol plant affects its grain accumulation costs. Specifically, this study examines how price variability of various wheat grades, combined with spatial and temporal variability in production of those grades affects the costs of grain accumulation for ethanol production. These costs are the main component of a plant's operating costs so lessening these costs can offer a comparative advantage for a plant owner. Logistics models' based on mathematical programming were constructed to depict a range of plant sizes and locations for ethanol production. The... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Ethanol; Mathematical programming; Logistics; Wheat; Grain quality; Resource /Energy Economics and Policy. |
| Ano: 2007 |
URL: http://purl.umn.edu/10349 |
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| Registros recuperados: 62 | |
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