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Registros recuperados: 24
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An Optimal Application of Swine Effluent in Texas and Oklahoma Panhandle Determined by Bayesian Stochastic Dynamic Programming AgEcon
Phetcharat, Chaowana; Stoecker, Arthur L.; Hattey, Jeffory A.; Warren, Jason G.; Vitale, Jeffrey D.; Park, Seong Cheol.
Tipo: Conference Paper or Presentation Palavras-chave: Swine Effluent Irrigation; Environmental Economics and Policy.
Ano: 2011 URL: http://purl.umn.edu/108549
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Decision Support System for Evaluating Rural Water Supply Infrastructure Scenarios AgEcon
Stoecker, Arthur L.; Sanders, Dee Ann; Whitacre, Brian E..
This paper seeks to develop a methodology that will be useful for rural water districts in assessing the future of their water systems infrastructure. In particular, the use of free water simulation software and publicly available data on population, roads, and terrain present rural water systems with the opportunity to analyze their existing distribution system and forecast where problems are likely to occur. This methodology will allow various alternatives (such as consolidation with a neighboring system, or pipe upgrades) to be evaluated and the costs of implementing these alternatives to be explored. Finally, different avenues for funding the associated costs can be summarized and presented to the community, including the steps needed to apply for...
Tipo: Conference Paper or Presentation Palavras-chave: Rural Water; Infrastructure; Simulation; EPANET; Community/Rural/Urban Development; R53; R58.
Ano: 2009 URL: http://purl.umn.edu/56526
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Determination of Least Cost Phosphorus Abatement Practices in a Watershed Under Stochastic Conditions AgEcon
White, Michael J.; Stoecker, Arthur L.; Marumo, Davis; Machooka, Stella; Howry, Sierra S.; Storm, Daniel E..
Tipo: Conference Paper or Presentation Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2007 URL: http://purl.umn.edu/10001
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DYNAMIC COMPARISON OF SYSTEMS FOR IRRIGATION AND EFFLUENT APPLICATION AgEcon
Carreira, Rita I.; Stoecker, Arthur L.; Hattey, Jeffory A.; Kizer, Michael A..
This study compares subsurface drip irrigation and sprinkler irrigation with respect to expected returns, aquifer life, nutrient utilization and accumulation in the production of irrigated corn using swine effluent and fresh groundwater from a depleting aquifer in the Oklahoma Panhandle. The results of the Dynamic Programming model indicate that SDI outperforms center pivot sprinkler irrigation in terms of NPV of net returns and reduced phosphorus accumulation in soil. Soil nitrogen accumulation in soil is greater with SDI. Groundwater depletion is projected to occur at the end of 36th year with center pivot irrigation.
Tipo: Conference Paper or Presentation Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2004 URL: http://purl.umn.edu/34794
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DYNAMIC SPREADSHEET PROGRAMMING TO SELECT THE MOST COST EFFICIENT MANURE HANDLING SYSTEM AgEcon
Carreira, Rita I.; Stoecker, Arthur L..
Tipo: Conference Paper or Presentation Palavras-chave: Livestock Production/Industries.
Ano: 2000 URL: http://purl.umn.edu/36430
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Economic Analysis of Management Practices to Reduce Phosphorus Load to Lake Eucha and Spavinaw AgEcon
Howry, Sierra S.; Stoecker, Arthur L.; Storm, Daniel E.; White, Michael J..
Changes in management practices are often proposed to reduce phosphorus loading from a watershed due to over application of poultry litter. This study determines the choice, location, and level of each best management practice in the watershed to meet a Total Maximum Daily Load and margins of safety at least cost.
Tipo: Conference Paper or Presentation Palavras-chave: Best management practice; Phosphorus runoff; Poultry litter; Target MOTAD; Environmental Economics and Policy.
Ano: 2008 URL: http://purl.umn.edu/6793
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Economic Effects of Environmental Taxation on Chemical Fertilizers AgEcon
Kim, Chang-Gil; Stoecker, Arthur L..
This paper analyzes the economic effects of environmental taxes on chemical fertilizer in producing rice. A charge of 10 percent tax on nitrogen fertilizer leads to a reduction in fertilizer use of 1.5 percent without changing rice yield, but the farm income is reduced by 0.6 percent. The tax rate of 100 percent leads to a reduction of 14.6 percent in fertilizer use, a 0.4 percent reduction in rice yield, and a 3.6 percent reduction in farm income. A significant feature of eco-taxes imposed on chemical fertilizers is their revenue potential, which could contribute to increasing government budgets for finance pollution control programs, such as education and R&D. This study provides an insight into the application of market-based instrument to achieve...
Tipo: Conference Paper or Presentation Palavras-chave: Polluter-pays-principle; Nonpoint pollution; Environmental tax; Nitrogen fertilizer; Negative externalities; Environmental Economics and Policy; Q28; Q52.
Ano: 2006 URL: http://purl.umn.edu/25501
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Economic Potential of Swine Effluent in Intensified Forage Systems in the Southern Plains AgEcon
Park, Seong Cheol; Vitale, Jeffrey D.; Turner, Jason Clemn; Stoecker, Arthur L.; Hattey, Jeffory A..
The projected long-run increase in corn prices from $2.50 to $3.50 per bushel is expected to have a similar effect on feed prices, pushing up feed costs by as much as 50 percent. With feed costs on the rise, increasing forage production through more intensive management techniques becomes a potentially viable option. This study uses experimental data from a seven-year study in the Oklahoma Panhandle to assess the economic feasibility of intensifying forage production. Four commonly used forage grasses in the region were field tested using two alternative fertilizer sources – swine effluent and urea. The results found that only the two cool season grasses – orchard grass and wheatgrass – generated positive economic returns under intensification.
Tipo: Article Palavras-chave: Agribusiness.
Ano: 2011 URL: http://purl.umn.edu/118955
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Effect of Corn Price on Profitability of Control Vs Phytase Enhanced Diet of Hogs AgEcon
Atreya, Ajita; Vitale, Jeffrey D.; Stoecker, Arthur L.; Carter, Scott D..
Economic Simulation model (SIMETAR) was used to investigate the effect of future corn price on profitability of control and phytase enhanced diet of hogs. The completed simulation model was used to estimate probability distribution for control vs lower excretion diet profitability under different corn prices. Data used was collected from recent field trials in Oklahoma that tested the effect of phytase enhanced diets on reducing phosphorus emission. The results showed that as the market price of corn increases control diet will be more profitable than phytase enhanced diet, given the cost of other remaining feed ingredient is constant for both the diets.
Tipo: Conference Paper or Presentation Palavras-chave: Profitability; SIMETAR; Control diet; Phytase enhanced diet; Swine; Production Economics.
Ano: 2009 URL: http://purl.umn.edu/46864
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Integrated Reservoir Management under Stochastic Conditions AgEcon
Debnath, Deepayan; Stoecker, Arthur L.; Boyer, Tracy A.; Sanders, Larry D..
Water Management and Planning
Tipo: Conference Paper or Presentation Palavras-chave: Economic optimization; Lake levels; Marketed and non-marketed water uses; Non-linear programming; Recreational benefits; Reservoir management; Stochastic inflows; Value of a visitor day; Environmental Economics and Policy; International Development; Land Economics/Use; Production Economics; Productivity Analysis; Public Economics; Resource /Energy Economics and Policy; Risk and Uncertainty.
Ano: 2011 URL: http://purl.umn.edu/108178
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LEAST-COST WATERSHED MANAGEMENT SOLUTIONS: USING GIS DATA IN ECONOMIC MODELING OF A WATERSHED AgEcon
Ancev, Tihomir; Stoecker, Arthur L..
Phosphorus pollution from excessive litter application causes eutorphication of lakes in the Eucha-Spavinaw watershed in eastern Oklahoma and western Arkansas. Consequent algal blooms impair the taste of municipal water supply drawn from the watershed. The paper shows how GIS data based biophysical modeling can be used to derive spatially optimal, least-cost allocation of management practices to reduce phosphorus runoff in the watershed. Transportation activities were added to the model so that transport of litter within and out of the watershed was possible. Results from the mathematical program suggest that uniform regulation of litter application is excessively costly regulatory measure and hence a regulation that assigns management practices according...
Tipo: Conference Paper or Presentation Palavras-chave: Environmental Economics and Policy.
Ano: 2003 URL: http://purl.umn.edu/35005
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LONG-TERM PROFITABILTIY OF ANIMAL MANURE USING OPTIMAL NITROGEN APPLICATION RATE AgEcon
Park, Seong Cheol; Stoecker, Arthur L.; Hattey, Jeffory A.; Turner, Jason Clemn.
Dynamic optimization compared the NPV of manure and ammonium fertilizers on irrigated corn. Yield, soil residual nitrogen and pH functions were estimated from a six year experiment in Oklahoma. Results show that given prices of corn and nitrogen fertilizer, animal manures provide a higher NPV of return than ammonia fertilizer.
Tipo: Conference Paper or Presentation Palavras-chave: Animal Manure; Carryover; Optimal Application Rate; Crop Production/Industries.
Ano: 2007 URL: http://purl.umn.edu/34830
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MANAGEMENT STRATEGIES TO MITIGATE ENVIRONMENTAL IMPACT OF WEATHER UNCERTAINTY IN EFFLUENT APPLICATION TO IRRIGATED CORN IN SEMIARID REGIONS AgEcon
Kizer, Michael A.; Stoecker, Arthur L.; Carreira, Rita I.; Hattey, Jeffory A..
This study compares subsurface drip irrigation and sprinkler irrigation with respect to expected returns, aquifer life, nutrient utilization and accumulation in the production of irrigated corn using swine effluent and fresh groundwater from a depleting aquifer in the Oklahoma Panhandle. Most of the equations estimated econometrically had heteroskedasticity problems and MLE was used. The econometric estimation of a PDF of ammonia volatilization dependent on amount of nitrogen applied, for each irrigation system, was successful and is the basis for developing a stochastic chain for the soil nitrogen carryover equation. The results of the stochastic dynamic programming model are still being developed and will be presented at the conference.
Tipo: Conference Paper or Presentation Palavras-chave: Crop Production/Industries; Environmental Economics and Policy.
Ano: 2004 URL: http://purl.umn.edu/20110
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Managing Expected Switchgrass Biomass Yield Variability by Strategically Selecting Land to Lease AgEcon
Debnath, Deepayan; Stoecker, Arthur L.; Epplin, Francis M..
Biorefineries that plan to use switchgrass exclusively will have to account for year-to-year variability in feedstock production. The objective of this research is to determine the quantity, class, and location of land to lease for switchgrass production to provide for the needs of a biorefinery. The firm could elect to lease land based on average switchgrass yields or to lease to attempt to insure that even in the worst case (based on historical data) production year the area leased will produce sufficient feedstock to fully provide for the needs of the biorefinery. EPIC was used to generate empirical distributions of switchgrass biomass yields for three land classes for each of 30 counties. Mathematical programming was used to address the objectives and...
Tipo: Presentation Palavras-chave: EPIC; Mathematical programming; Switchgrass; Yield variability; Crop Production/Industries; Land Economics/Use; Risk and Uncertainty; Q42; Q12.
Ano: 2012 URL: http://purl.umn.edu/124230
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Optimal Allocation of Reservoir Water AgEcon
Debnath, Deepayan; Stoecker, Arthur L.; Boyer, Tracy A.; Sanders, Larry D..
The purpose of this paper is to determine the optimal allocation of reservoir water among consumptive and non-consumptive uses. A non-linear mathematical programming model is developed to optimally allocate Lake Tenkiller water among competing uses that maximize the net social benefit. A mass balance is used to determine the level and volume of water in the lake. This paper examines the effect of water management on lake resources when recreational values are and are not included as control variables in the optimization process. Results show that maintaining the lake level to the ‘normal lake level’ of 632 feet during the summer months generates more recreational benefit rather than reducing the lake level by releasing water for hydro power generation.
Tipo: Conference Paper or Presentation Palavras-chave: Consumptive and non-consumptive use; Mass balance equation; Non-linear mathematical programming; Optimization; Recreational uses; Water allocation; Resource /Energy Economics and Policy.
Ano: 2009 URL: http://purl.umn.edu/46842
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Optimal Application of Swine Effluent under Stochastic Weather Conditions in the Texas and Oklahoma Panhandles AgEcon
Park, Seong Cheol; Phetcharat, Chaowana; Stoecker, Arthur L.; Hattey, Jeffory A..
Tipo: Conference Paper or Presentation Palavras-chave: Ammonia Volatilization; Animal Waste; Irrigation; Swine Effluent; Target MOTAD; Production Economics; Resource /Energy Economics and Policy.
Ano: 2010 URL: http://purl.umn.edu/56444
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Optimal Nitrogen Applications: A Stochastic Dynamic Model of Irrigated Corn in the Southern High Plains AgEcon
Park, Seong Cheol; Woodward, Richard T.; Stoecker, Arthur L.; Hattey, Jeffory A..
Tipo: Conference Paper or Presentation Palavras-chave: Crop Production/Industries.
Ano: 2010 URL: http://purl.umn.edu/61134
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OPTIMAL RATE OF APPLIED NITROGEN AND CHOICE OF REDUCED TILLAGE AgEcon
Bocoum, Kolado; Stoecker, Arthur L..
The objective was to compare optimal long-term farm level investments in conservation tillage systems and annual nitrogen use in wheat production from a private and social perspective. The performance of four tillage systems was simulated on a 243 hectare (600-acre) Oklahoma wheat farm with six soil types. A decomposition method was used to find the optimal tillage system. It was found that private producers would select a disk chisel system while the less erosive sweep system was optimal from a social perspective.
Tipo: Conference Paper or Presentation Palavras-chave: Crop Production/Industries.
Ano: 2000 URL: http://purl.umn.edu/36484
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OPTIMAL SPATIAL ALLOCATION OF WASTE MANAGEMENT PRACTICES TO REDUCE PHOSPHORUS POLLUTION IN A WATERSHED AgEcon
Ancev, Tihomir; Stoecker, Arthur L.; Storm, Daniel E..
Phosphorus pollution from excessive litter application and municipal discharges causes eutorphication of lakes in the Eucha-Spavinaw watershed in eastern Oklahoma and western Arkansas. Consequent algae blooms impair the taste of drinking water supply drawn from the watershed and reduce the recreational values of the lakes. The paper shows how GIS data based biophysical modeling can be used to derive spatially optimal, least-cost allocation of agricultural management practices to be combined with optimal wastewater treatment activity from the point source in order to achieve socially optimal phosphorus load in the watershed. The optimal level of phosphorus load is determined by equating marginal abatement with marginal damage cost. Transportation...
Tipo: Conference Paper or Presentation Palavras-chave: Environmental Economics and Policy.
Ano: 2003 URL: http://purl.umn.edu/22179
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POTENTIAL ECONOMIC IMPACTS OF THE REVISED ENVIRONMENTAL PROTECTION AGENCY "CAFO RULE" AgEcon
Ferrell, Shannon L.; Williams, Joseph E.; Stoecker, Arthur L..
Tipo: Conference Paper or Presentation Palavras-chave: Environmental Economics and Policy.
Ano: 2002 URL: http://purl.umn.edu/36676
Registros recuperados: 24
Primeira ... 12 ... Última
 

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