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| Registros recuperados: 33 | |
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| Gandonou, Jean-Marc; Dillon, Carl R.; Kanakasabai, Murali; Shearer, Scott A.. |
| One of the potential management practices of precision agriculture (PA) is the capability of varying input application rate across a field. A potential benefit of that practice is the reduction in yield variability. Temporal reduction in yield variability can also be achieved through irrigation practices. Combining both practices should lead to a reduction of the yield risk faced by the farmer. In this study, variable rate application of nutrients will include to nitrogen, potassium and phosphate. Mathematical programming techniques will be used in a standard E-V framework to analyze the ability of PA and/or irrigation to reduce production risk. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Risk and Uncertainty. |
| Ano: 2003 |
URL: http://purl.umn.edu/35131 |
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| Dillon, Carl R.; Mjelde, James W.; McCarl, Bruce A.. |
| Economic feasibility of Texas Blacklands corn production in relation to sorghum, wheat, and cotton is studied. Biophysical simulation generated yield data are integrated with an economic decision model using quadratic programming. Given the various scenarios analyzed, corn is economically feasible for the Blacklands. A crop mix of half corn and half cotton production is selected under risk neutrality with wheat entering if risk aversion is present. Corn and grain sorghum production are highly substitutable. Profit effects attributed to changing corn planting dates are more pronounced than profit changes resulting from altering corn population or maturity class. |
| Tipo: Journal Article |
Palavras-chave: Crop Production/Industries. |
| Ano: 1989 |
URL: http://purl.umn.edu/30189 |
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| Vassalos, Michael; Dillon, Carl R.; Coolong, Tim. |
| This study combines whole farm economic analysis with biophysical simulation techniques in order to achieve a twofold objective. First, the study seeks to develop a multiple enterprise vegetable farm model with a production and marketing decision interface and, second, to determine optimal production practices for Kentucky vegetable growers. Three vegetable crops are examined: tomatoes, bell peppers and sweet corn. The findings indicate that the risk associated with vegetable production can be significantly mitigated with diversification of production mix and with a greater number of transplanting dates. However, this reduction in risk comes at a high cost in terms of expected net returns. |
| Tipo: Presentation |
Palavras-chave: Vegetable production; Mean-variance; Biophysical simulation; Farm management; Farm Management; C61; C63; D81. |
| Ano: 2012 |
URL: http://purl.umn.edu/120016 |
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| Dillon, Carl R.. |
| The identification of optimal management zones, including optimal uniform grid size, is a complex issue central to the successful implementation of variable rate input application. A novel economic optimization model is developed and applied that identifies the economically optimal management zone. Variable rate seeding can increase profits and reduce risk. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Farm Management. |
| Ano: 2002 |
URL: http://purl.umn.edu/19672 |
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| Carter, Joy; Maynard, Leigh J.; Dillon, Carl R.. |
| One supplier of broilers without giblets (WOGs) offers customers a choice between paying Urner Barry's WOG quote or a formula price based on futures prices. From a buyer's perspective, the formula price is second-degree stochastic dominant, thus acting a marketing inducement. The formula price allows the seller to set almost perfect cross-hedges of WOGs with corn and soymeal. Stochastic dominance results suggested that the seller's dominant strategy would shift from the unhedged Urner Barry quote to the unhedged formula price as risk aversion increased. The hedged formula price was prominent in optimal portfolios of pricing strategies. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Demand and Price Analysis; Livestock Production/Industries; Marketing. |
| Ano: 2000 |
URL: http://purl.umn.edu/21765 |
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| Salim, Juma K.; Dillon, Carl R.; McAllister, Jack. |
| The traditional mathematical programming model with the objective function of feed ration cost minimization is used to accommodate risk management responses to price variability associated with feeding a particular feed ration over time. The model incorporated biophysical simulation data using Cornell Net Carbohydrate and Protein System (CNCPS) software in addressing nutrient requirements and excretions. In addition, it used historic feedstuff prices in a mean-variance (E-V) framework analysis. The optimized seasonal feeding indicated to have a lower mean ration cost and lowest nutrient loading followed by optimized uniform feeding program. The feed cost optimization proved to be a better strategy in minimizing ration cost and reducing excretions both... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Risk and Uncertainty. |
| Ano: 2006 |
URL: http://purl.umn.edu/21274 |
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| Song, Baohui; Dillon, Carl R.; Mueller, Thomas. |
| This research explores a possible reason for the inconsistent results from previous study on the profitability analysis in precision agriculture - different standards of identifying possible erroneous observations for PA datasets. By comparing the results from the different standards of identifying possible erroneous observations, this research raises concerns about the negative impacts of different standards of identifying possible erroneous observations on the profitability analysis of PA, and provides some suggestions for the standard which could be used in the future profitability analysis of PA. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Research Methods/ Statistical Methods. |
| Ano: 2008 |
URL: http://purl.umn.edu/6821 |
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| Dillon, Carl R.; Gandonou, Jean-Marc. |
| Recent increases in fertilizer, particularly nitrogen, and fuel price have resulted in increased production cost for farmers. In this paper a farm level production model that compare uniform and variable rate fertilizer (NPK) application is developed that permits an analysis of the economic performance of fertilizer management regarding profitability. Results show that farmer's exposure to fertilizer and fuel prices risk have substantial impact both on the expected net returns and production practices for producers both uniform and variable rate technology. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Q12; Q15; Q55; Crop Production/Industries. |
| Ano: 2007 |
URL: http://purl.umn.edu/34955 |
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| Registros recuperados: 33 | |
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