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| Registros recuperados: 33 | |
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| Cacho, Oscar J.; Jones, Randall E.. |
| It is argued in this paper that static approaches to weed management, where the benefits and costs are only considered within a single season, are inappropriate for assessing the economic benefits of weed control technologies. There are carryover effects from weed management as weeds that escape control in one season may reproduce and replenish weed populations in following seasons. Consequently, it is appropriate to view weed control in the context of a resource management problem where the goal is to determine the optimal inter-temporal level of weed control that maximises economic benefits over some pre-determined period of time. A dynamic optimisation model for weed control is presented. Using the tools of comparative static analysis and Pontryagin's... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Weed control; Resource economics; Optimal control; Dynamic programming; Wild oats; Farm Management. |
| Ano: 2000 |
URL: http://purl.umn.edu/12902 |
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| Vosough Ahmadi, Bouda; Morgan, Colin A.; Stott, Alistair W.. |
| Since decoupling of the CAP, many Scottish suckler cow farms are facing financial difficulties. In response, many farmers are out-wintering extensively managed suckler cows to minimise production costs. These systems are of animal welfare concern. A range of trade-offs between animal welfare indicators and between animal welfare and farm profitability can be identified. A Dynamic Programming (DP) model was developed to study these trade-offs. Two herds were modelled assuming their feeding regimes were either low (LHERD) or high (HHERD). The objective of the DP was to maximise the expected net margin from a current cow and its successors over an infinite time horizon. Preliminary results showed that the rate of voluntary culling was higher in HHERD than in... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Beef cow; Economics; Dynamic programming; Animal welfare; Livestock Production/Industries. |
| Ano: 2009 |
URL: http://purl.umn.edu/51078 |
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| Kouka, Pierre-Justin; Duffy, Patricia A.; Taylor, C. Robert. |
| Optimal crop and livestock mix was determined for a representative Alabama farm using a dynamic programming model. Results indicate that decisions concerning livestock production are highly influenced by the amount of cotton base available on the farm. In most cases, increasing cotton base results in less cattle production. The triple base provisions of the 1990 Farm Bill, however, may give some cotton farmers an incentive to produce more stocker cattle during the winter months. Research results also indicate that the availability of farm programs can alter the optimal enterprise mix on a farm with no beginning base in cotton. |
| Tipo: Journal Article |
Palavras-chave: Farm programs; Dynamic programming; Livestock; Farm Management. |
| Ano: 1994 |
URL: http://purl.umn.edu/15407 |
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| Khan, Mohammad Ismail. |
| In Bangladesh, climatic change is likely to impact significantly upon surface and groundwater availability, as well as in other countries. The population of Bangladesh is projected to be double the current 2010 level by 2050. Demand for water will rise with the increasing demand for rice. This paper considers the optimal demand management of irrigation water with stochastic supply under climate change for a 3-year planning horizon. It also identifies the utilization of irrigation water from surface water sources to maximize the expected net social return from rice production. This is done by considering decision on dam release for rice production with reference to climate change. A stochastic dynamic programming model is developed for analyzing the levels... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Climate change; Dam release; Dynamic programming; Environmental Economics and Policy. |
| Ano: 2011 |
URL: http://purl.umn.edu/100571 |
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| Myyra, Sami; Pietola, Kyosti. |
| This article solves and characterizes optimal decision rules to invest in irreversible land improvements conditional on land tenure insecurity. Economic model is a normative dynamic programming model with known parameter for the one period returns and transition equations. The decision rules are solved numerically conditional on alternative scenarios on the likelihood that the lease contract and, thus, farmer access to land is either renewed or expires. The model parameters represent Finnish soil quality and production conditions. The results suggest that irreversible land improvements decrease quickly and the yields decline gradually when the farmer is confronted with land tenure insecurity caused by uncertain renewal of the lease contract. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Agriculture; Dynamic programming; Land Economics/Use; Q15; Q21. |
| Ano: 2005 |
URL: http://purl.umn.edu/24633 |
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| Vosough Ahmadi, Bouda; Morgan, Colin A.; Stott, Alistair W.. |
| Since decoupling of the CAP, many Scottish suckler cow farms are facing financial difficulties. In response, many farmers are out-wintering extensively managed suckler cows to minimise production costs. These systems are of animal welfare concern. A range of trade-offs between animal welfare indicators and between animal welfare and farm profitability can be identified. A Dynamic Programming (DP) model was developed to study these trade-offs. Two herds were modelled assuming their feeding regimes were either low (LHERD) or high (HHERD). The objective of the DP was to maximise the expected net margin from a current cow and its successors over an infinite time horizon. Preliminary results showed that the rate of voluntary culling was higher in HHERD than in... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Livestock Production/Industries; Beef cow; Economics; Dynamic programming; Animal welfare. |
| Ano: 2009 |
URL: http://purl.umn.edu/61122 |
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| Registros recuperados: 33 | |
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