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Registros recuperados: 54
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Principal Component Analysis of Crop Yield Response to Climate Change 31
Cai, Ruohong; Bergstrom, John C.; Mullen, Jeffrey D.; Wetzstein, Michael E.; Shurley, W. Donald.
The objective of this study is to compare the effects of climate change on crop yields across different regions. A Principal Component Regression (PCR) model is developed to estimate the historical relationships between weather and crop yields for corn, soybeans, cotton, and peanuts for several northern and southern U.S. states. Climate change projection data from three climate models are applied to the estimated PCR model to forecast crop yield response. Instead of directly using weather variables as predictor variables, the PCR model uses weather indices transformed from original weather variables by the Principal Component Analysis (PCA) approach. A climate change impact index (CCII) is developed to compare climate change effects across different...
Tipo: Working or Discussion Paper Palavras-chave: Principal component regression; Crop yield response; Climate change.; Crop Production/Industries.
Ano: 2011 URL: http://purl.umn.edu/103947
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PEST INFORMATION MARKETS AND INTEGRATED PEST MANAGEMENT 31
Wetzstein, Michael E..
Tipo: Journal Article Palavras-chave: Crop Production/Industries.
Ano: 1981 URL: http://purl.umn.edu/30124
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CROSS-COUNTRY COMPARISON OF EFFICIENCY OF FIRMS IN THE FOOD INDUSTRY 31
Acheampong, Yvonne J.; Wetzstein, Michael E..
Stochastic frontier analysis is used to determine the relative efficiency of firms in the food industry in industrialized countries. Using panel data analysis, the firm-specific factors, firm size, the corporate tax rate and number of years of operation and country-specific effects as potential sources of efficiency are investigated. Relevant implications are discussed.
Tipo: Working or Discussion Paper Palavras-chave: Agribusiness; Industrial Organization; Productivity Analysis.
Ano: 2001 URL: http://purl.umn.edu/16669
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ECONOMIC RETURNS TO THE BOLL WEEVIL ERADICATION PROGRAM 31
Ahouissoussi, Nicolas B.C.; Wetzstein, Michael E.; Duffy, Patricia A..
The economic viability of the Boll Weevil Eradication program in Alabama, Florida, and Georgia is assessed based on a five-year survey of producers. Results indicate the program increases yield 100 pounds per acre. This implies a 19 percent internal rate of return for producers over a ten year period.
Tipo: Journal Article Palavras-chave: Cotton; Pest management; Regional pest control; Crop Production/Industries.
Ano: 1993 URL: http://purl.umn.edu/15043
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AN ECONOMIC EVALUATION OF A MULTI-AREA RECREATION SYSTEM 31
Wetzstein, Michael E..
Tipo: Journal Article Palavras-chave: Resource /Energy Economics and Policy.
Ano: 1982 URL: http://purl.umn.edu/30456
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RETURNS TO SCALE AND SIZE IN AGRICULTURAL ECONOMICS: REPLY 31
McClelland, John W.; Wetzstein, Michael E.; Musser, Wesley N..
Tipo: Journal Article Palavras-chave: Research Methods/ Statistical Methods.
Ano: 1988 URL: http://purl.umn.edu/32157
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ECONOMIC AND ENVIRONMENTAL EVALUATION OF DAIRY MANURE UTILIZATION FOR YEAR ROUND CROP PRODUCTION 31
Somda, Zana C.; Allison, John R.; Ely, L.O.; Newton, G.L.; Wetzstein, Michael E..
The production of excess on-farm manure is placing continuous pressures on dairy producers to meet or exceed standards for environmental regulations while maintaining profitability and competitiveness. Evaluation of the effects of recycling nutrients on the profitability of the whole farm enterprise is important for a dairy operation. The objective of this study was to develop a linear programming model that evaluates the economic performance of a dairy operation considering production and environmental constraints. The main goal was to maximize profits from the dairy enterprise considering milk production, manure production, crop production while maintaining a balance of nutrients in the system. Results from simulation analyses showed greater effects...
Tipo: Conference Paper or Presentation Palavras-chave: Environmental Economics and Policy.
Ano: 2003 URL: http://purl.umn.edu/35167
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Crop Price Volatility Impacts on Farmers’ Cropping Patterns: A Dynamic Optimal Crop Rotation Model 31
Cai, Ruohong; Qiu, Cheng; Wetzstein, Michael E..
Tipo: Conference Paper or Presentation Palavras-chave: Crop Production/Industries.
Ano: 2010 URL: http://purl.umn.edu/61665
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Estimating China’s Energy and Environmental Productivity Efficiency: A Parametric Hyperbolic Distance Function Approach 31
Zhang, Zibin; Jin, Xiangrong; Dong, Xuebing; Wetzstein, Michael E..
Since the beginning of this century, China’s annual GDP growth is over 9%. This growth is fueled by large increases in energy consumption, led by a coal-dominated energy structure, and associated with higher sulfur dioxide emissions and industry dust. In 2008, China accounted for over 17% of the world’s total primary energy consumption and accounts for nearly three-quarters of global energy growth. At an average annual energy growth rate over 12% since 2000, China’s future share of primary energy consumption will continue to increase. A consequence of this growth is China becoming the global leader in sulfur and carbon dioxide emissions. To deal with these energy and environmental challenges, the government set energy saving and pollution reduction...
Tipo: Conference Paper or Presentation Palavras-chave: Environmental productivity efficiency; Hyperbolic distance function; China's energy policy; Environmental Economics and Policy; Productivity Analysis; Resource /Energy Economics and Policy.
Ano: 2010 URL: http://purl.umn.edu/60918
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RATIONAL EXPECTATIONS ESTIMATION OF GEORGIA SOYBEAN ACREAGE RESPONSE 31
Ahouissoussi, Nicolas B.C.; McIntosh, Christopher S.; Wetzstein, Michael E..
The general method of moments procedure is used for estimating a soybean acreage response function assuming the producers hold rational expectations. Results indicate that soybean, corn, and wheat futures prices, lagged acreage, and government programs are significant factors for determining soybean plantings. Implications of the results are that crop acreage selection by Georgia producers is not very responsive to demand shocks. Thus, producers in other regions are more likely to absorb impacts from these shocks on crop acreage selection.
Tipo: Journal Article Palavras-chave: Soybeans; GMM; Elasticities; Crop Production/Industries.
Ano: 1995 URL: http://purl.umn.edu/15270
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Should We Invest in Biofuels? 31
Wetzstein, Michael E..
The real advantage of receiving a Southern Agricultural Economics Association Lifetime Achievement award is the ability to make this presentation and have it published without having to deal with editors and referees. This provides a certain license of freedom to abstract outside the box without being constrained by your peers. So in this vein, consider the following myths and predictions concerning biofuels. These myths are generally consistent with the Grunwald’s (2009) seven myths about alternative energy.
Tipo: Journal Article Palavras-chave: Alternative energy; Biofuels; Agribusiness; Community/Rural/Urban Development; Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2010 URL: http://purl.umn.edu/92610
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A CASE STUDY OF TIMELINESS IN THE SELECTION OF RISK-EFFICIENT MACHINERY COMPLEMENTS 31
Wetzstein, Michael E.; Musser, Wesley N.; McClendon, Ronald W.; Edwards, David M..
The importance of timeliness is investigated in the selection of machinery complements for double-crop wheat and soybean production in the southeastern coastal plain. An intertemporal stochastic simulation model was developed to generate probability distributions that were evaluated with stochastic dominance analysis. This research investigated the importance of intertemporal production linkages and adequate soil moisture on machinery selection. Failure to include these dimensions can result in erroneous machinery choices.
Tipo: Journal Article Palavras-chave: Farm Management.
Ano: 1990 URL: http://purl.umn.edu/29998
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BIODIESEL AS A SUBSTITUTE FOR PETROLEUM DIESEL IN A STOCHASTIC ENVIRONMENT 31
Tareen, Irfan Y.; Duffield, James A.; Wetzstein, Michael E..
Policy makers should consider price volatility effects when determining appropriate spending levels for alternative fuel programs.
Tipo: Conference Paper or Presentation Palavras-chave: Resource /Energy Economics and Policy.
Ano: 1999 URL: http://purl.umn.edu/21675
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OPTIMAL AGRICULTURAL PEST MANAGEMENT WITH MULTIPLE SPECIES 31
Wetzstein, Michael E.; Szmedra, Philip I.; Musser, Wesley N.; Chou, Charlene C.J..
Tipo: Journal Article Palavras-chave: Agricultural and Food Policy; Resource /Energy Economics and Policy.
Ano: 1985 URL: http://purl.umn.edu/28929
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SLIPPAGE IN FORECASTING IRRIGATION WATER DEMAND: AN APPLICATION TO THE GEORGIA FLINT RIVER BASIN 31
Tareen, Irfan Y.; Gunter, Lewell F.; Bramblett, Jimmy; Wetzstein, Michael E..
This study identifies the presence of slippage and the pitfalls associated with not considering economic substitution and expansion effects in measuring changes in water demand. Based on estimates from the Georgia Flint River Basin, the analysis indicates a 13% slippage caused by disregarding the role of economic determinants.
Tipo: Conference Paper or Presentation Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2002 URL: http://purl.umn.edu/19852
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Environmental Mechanism Designs in a New Order of Regulatory Capitalism 31
Mullen, Jeffrey D.; Centner, Terence J.; Wetzstein, Michael E..
Complexity of environmental programs is most apparent with information asymmetries, making the design of efficient mechanisms particularly challenging. As developed theoretically in this paper, a new regulatory capitalism paradigm mating voluntary agreements with environmental education can produce outcomes at least as efficient as voluntary agreements alone. Such a design exploits a key difference between voluntary agreements versus educational programs in terms of their impact on agents' incentive compatibilities. Specifically, in a principal-agent model, voluntary agreements are associated with an incentive-compatibility constraint, whereas educational programs are not. The efficient bundle will likely consist of a set of education programs and...
Tipo: Conference Paper or Presentation Palavras-chave: Command and control; Environmental education; Environmental policy; Voluntary agreements; Environmental Economics and Policy.
Ano: 2007 URL: http://purl.umn.edu/9357
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The Impact on Farm Profitability and Yield Efficiency of Bell Pepper Production of the Methyl Bromide Phase-Out Program in Georgia 31
Byrd, Mark M.; Fonsah, Esendugue Greg; Escalante, Cesar L.; Wetzstein, Michael E..
The elimination of methyl bromide (MeBr) has been a hot topic for policymakers for more than a decade. As a result, of the Montreal Protocol on Substances that Deplete the Ozone Layer, signatory nations began implementing guidelines aimed at reducing or eliminating a variety of toxic substances, including MeBr, which has been identified as one of the toxic contributors to ozone depletion. In 1997 the Ninth Meeting of the Parties in Montreal recommended an accelerated phase-out schedule for MeBr. The accelerated phase-out program is a major concern to most U.S. farmers, and in particular to farmers in Georgia, where the product is used not only as an important soil fumigant but also to control both the yellow and purple nutsedge (Cyperus sp.). Furthermore,...
Tipo: Journal Article Palavras-chave: Crop Production/Industries.
Ano: 2006 URL: http://purl.umn.edu/8571
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Feasible Fumigant-Herbicide System Alternatives to Methyl Bromide for Bell Pepper Producers 31
Byrd, Mark M.; Escalante, Cesar L.; Fonsah, Esendugue Greg; Wetzstein, Michael E..
With the current methyl bromide (MeBr) system for producing Georgia’s peppers being phased out, alternative fumigant and herbicide systems for producers are analyzed. Using stochastic dominance analyses, two alternatives exceeding MeBr’s yield and financial efficiency were identified. A programming model, incorporating simulation-optimization techniques, generated optimal production and financial plans. Results indicate potential economic viability under alternative systems vis-à-vis the traditional MeBr production system. The Telone II and Chloropicrin combination with Metham potassium may offer a viable substitute for MeBr.
Tipo: Journal Article Palavras-chave: Fumigant; Herbicide; Methyl bromide; Multi-period programming; Optimization; Simulation; Stochastic dominance; Agribusiness; Crop Production/Industries.
Ano: 2007 URL: http://purl.umn.edu/62283
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AN EVALUATION OF INTEGRATED PEST MANAGEMENT WITH HETEROGENEOUS PARTICIPATION 31
Wetzstein, Michael E.; Musser, Wesley N.; Linder, David K.; Douce, G. Keith.
Principal component analysis in employed to develop indices that distinguish between participants and nonparticipants in Integrated Pest Management (IPM) programs. Results of incorporating these indices into yield, net return, and production cost functions for cotton producers indicate that both yield and costs increase as the degree of producer participation in IPM increases. Although these results are inconsistent with previous research, they are consistent with the theoretical relationship between IPM and conventional input usage.
Tipo: Journal Article Palavras-chave: Crop Production/Industries.
Ano: 1985 URL: http://purl.umn.edu/32308
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Entry of Alternative Fuels in a Volatile U.S. Gasoline Market 31
Vedenov, Dmitry V.; Duffield, James A.; Wetzstein, Michael E..
The hypothesis underlying this analysis is that in the presence of volatile gasoline prices competitive market forces will yield alternative, less volatile fuels as substitutes. A real-option pricing approach was employed for this analysis by modeling investment under uncertainty for the case of comparing stochastic prices of substitute commodities. Based on real options, threshold decision rules were developed for the adoption of portfolio fuels such as ethanol and conventional gasoline blends. Considering this portfolio effect, the benefit-to-cost ratios are above four for the alternative blends under varying discount rates and time horizons. This provides a strong indication that consumer demand exists for these portfolio fuels. Competitive markets will...
Tipo: Conference Paper or Presentation Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2005 URL: http://purl.umn.edu/19182
Registros recuperados: 54
Primeira ... 123 ... Última
 

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