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| Registros recuperados: 165 | |
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| Nganje, William E.; Johnson, D. Demcey; Wilson, William W.; Leistritz, F. Larry; Bangsund, Dean A.; Tiapo, Napoleon M.. |
| Fusarium Head Blight (FHB), commonly known as scab, has been a severe problem for wheat and barley producers since 1993. This study provides an update of economic losses suffered by wheat and barley producers in scab-affected regions in the United States. Emphasis is placed on estimating direct and secondary economic impacts of yield and price losses suffered by wheat and barley producers from 1998 to 2000. Nine states are included in the analysis for three wheat classes. Three of the nine states were also used for the analysis of malting and feed barley. The cumulative direct economic losses from FHB in hard red spring (HRS) wheat, soft red winter (SRW) wheat, durum wheat, and barley is estimated at $870 million from 1998 through 2000. The combined... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Fusarium Head Blight; Scab; Vomitoxin; Crop losses; Wheat; Barley; Crop Production/Industries. |
| Ano: 2001 |
URL: http://purl.umn.edu/23515 |
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| Henry, Benjamin; Wilson, William W.; Dahl, Bruce L.. |
| Development of genetically modified (GM) and specialty crops has had a great impact on the grain handling industry during recent years. Added costs associated with handling these crops have become an important issue for grain handlers. For this study, data were collected from a survey of elevators in the Upper Midwest. The information focused on segregation practices, time requirements, and costs. This study shows the different costs (grading and handling) associated with segregation practices at the grain-handler level. The results revealed that the cost of modifying systems to handle GM is of major importance. A stochastic simulation model of an engineering cost function is developed to analyze costs for segregation and testing using results from the... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Genetically modified crops; Identity preservation; Segregation; Crop Production/Industries. |
| Ano: 2006 |
URL: http://purl.umn.edu/23557 |
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| Wilson, William W.; Dahl, Bruce L.. |
| This study examined moisture specification practices in the United States and for major exporters and assessed impacts of changes to a nil or constant moisture basis on prices and revenue. These were examined under scenarios where information on moisture in current prices is limited and under a scenario where current prices reflect Full Knowledge of moisture advantages. Results indicate that changing to a nil moisture basis (which requires a subsequent adjustment in volumes to reflect the subtraction of moisture) would increase reported prices from 42 to 70 c/bu for the wheat classes, while changing to a 12 percent constant moisture basis would have limited impacts on reported prices. Effects on relative prices/revenue depend on whether knowledge of... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Moisture; Specifications; Pricing; Wheat; Constant moisture; Nil moisture; Crop Production/Industries. |
| Ano: 2002 |
URL: http://purl.umn.edu/23638 |
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| Johnson, D. Demcey; Wilson, William W.. |
| This article presents a mathematical programming model of wheat cleaning and blending decisions at a country elevator. Simulations are performed to illustrate the sensitivity of cleaning to selected variables, including the value of screenings, transportation costs, and market discounts for excess dockage. In addition, the model is used to assess the impact of including dockage in the grade standards for wheat. |
| Tipo: Journal Article |
Palavras-chave: Crop Production/Industries. |
| Ano: 1993 |
URL: http://purl.umn.edu/30967 |
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| Wilson, William W.. |
| One of the impacts of higher prices along with greater volatility in futures and basis is that there is pressure for an escalation in cash contracting for grain. This volatility has resulted in an unprecedented level of contracting with growers for specific purchases in recent years. There is a wide array of cash contracts with varying terms. Beyond that array, there is also a growing realization of growers not delivering on contracts, in part due to escalation in post-contract prices. This realization is evolving as a major strategic issue for buyers and the marketing system, particularly as buyers seek to use such contracting strategies as an element of risk mitigation. There are three purposes of this article. First is to provide a broad survey of... |
| Tipo: Report |
Palavras-chave: Crop Production/Industries; Farm Management; Financial Economics; C15; D81; Q12. |
| Ano: 2009 |
URL: http://purl.umn.edu/55084 |
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| Wilson, William W.; Jabs, Eric J.; Dahl, Bruce L.. |
| A stochastic optimization model was developed to determine optimal testing strategies, costs, and risks of a dual marketing system. The model chooses the testing strategy (application, intensity, and tolerance) that maximizes utility (minimizes disutility) of additional system costs due to testing and quality loss and allows simulation of the risk premium required to induce grain handlers to undertake a dual marketing system versus a Non-GM system. Cost elements including those related to testing, quality loss, and a risk premium were estimated for a model representing a grain export chain. Uncertainties were incorporated and include test accuracy, risk of adventitious commingling throughout, and variety declaration. Sensitivities were performed for... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Segregation; Testing; Tolerance; Genetically Modified; Wheat; Risk Premium; Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies. |
| Ano: 2003 |
URL: http://purl.umn.edu/23605 |
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| Registros recuperados: 165 | |
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