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Registros recuperados: 28
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A Note on Price Information in Commodity Markets with Evidence from the Cotton Market AgEcon
Hudson, Darren; Ethridge, Don E.; Segarra, Eduardo.
Theory and analysis of price information and its importance have typically assumed that the information is correct. Additionally, most analyses have centered on general price information assuming homogeneous products. This paper examines the implications of incorrect price information on the basis of quality, with evidence from prior research on cotton prices used as an illustration. Results of a conceptual analysis indicate that quality has direct implications on the production and marketing process. Incorrect information on prices of different quality leads to distortions in the market and market inefficiency.
Tipo: Report Palavras-chave: Agricultural and Food Policy; Demand and Price Analysis.
Ano: 1997 URL: http://purl.umn.edu/53174
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A STOCHASTIC PROGRAMMING ANALYSIS OF THE FARM LEVEL IMPLICATIONS OF SOIL EROSION CONTROL AgEcon
Segarra, Eduardo; Kramer, Randall A.; Taylor, Daniel B..
This paper analyzes the effects of uncertain soil loss in farm planning models. A disaggregated approach was used because of an interest in examining the impact of probabilistic soil loss constraints on farm level decision-making. A stochastic programming model was used to consider different levels of probability of soil loss. Traditional methods of analysis are shown to consistently overestimate net returns.
Tipo: Journal Article Palavras-chave: Farm Management.
Ano: 1985 URL: http://purl.umn.edu/29971
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A VARIABLE PRICE SUPPORT FARM PROGRAM: A TRANSITION TOOL TO A FREE MARKET AgEcon
Huang, Wen-Yuan; Hyberg, Bengt; Segarra, Eduardo.
This paper analyzes a variable price support program (VPS) as an alternative to the current farm income support program. The VPS program can control U.S. agricultural production while protecting income of small farmers. The VPS is designed to alter farm level production decisions by reducing commodity support prices for each additional unit of production produced. This will serve to discourage excess aggregate production. The VPS program can be a mechanism to stabilize income of efficient small farms during the transition from the current farm programs to a free market environment. An illustrative study is used to target government program benefits to various farm-size groups.
Tipo: Journal Article Palavras-chave: Agricultural Finance.
Ano: 1990 URL: http://purl.umn.edu/29902
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Adoption of Variability Detection and Variable Rate Application Technologies by Cotton Farmers in Southern United States AgEcon
Nair, Shyam; Wang, Chenggang; Segarra, Eduardo; Belasco, Eric J.; Velandia, Margarita M.; Reeves, Jeanne M..
A nested logit model was used to analyze the 2009 Southern Cotton Precision Farming Survey to study the impact of farmer and farm characteristics on the adoption of Variability Detection Technologies (VDT) and the adoption of Variability Rate application Technology (VRT) conditioned on the type of the VDT chosen. The results showed that the farm size and exposure to extension activities are important factors affecting the choice of VDTs. The farmers adopting both soil and plant based VDTs are more likely to adopt VRT. The probability of adoption of VRTs was lower for Texas cotton farmers irrespective of the type of VDT adopted. In general, younger, more educated farmers who use computers for farming operations are more likely to adopt VRT when they...
Tipo: Conference Paper or Presentation Palavras-chave: Precision Agriculture; Technology Adoption; Cotton; Crop Production/Industries; Farm Management; Research and Development/Tech Change/Emerging Technologies; O33; Q16.
Ano: 2011 URL: http://purl.umn.edu/103567
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AN EVALUATION OF POST CONSERVATION RESERVE PROGRAM ALTERNATIVES IN THE TEXAS HIGH PLAINS AgEcon
Johnson, Phillip N.; Segarra, Eduardo.
Four policy alternatives for CRP lands upon expiration of the current contracts in Hale county, Texas are evaluated using chance-constrained programming. It was found that if CRP contracts are extended at the current average rental rate, 40 percent of the current enrollment would be expected to return to crop production, while 66 percent would return to crop production if the program were eliminated. The results also indicate that the marginal value of CRP payments to producers is lower than the marginal value of deficiency payments.
Tipo: Journal Article Palavras-chave: Conservation Reserve Program; Chance-constrained programming; Soil erosion; Land Economics/Use.
Ano: 1995 URL: http://purl.umn.edu/15275
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ANNUAL REPORT RESEARCH PROGRAM 2003/2004 AgEcon
Ethridge, Don E.; Segarra, Eduardo; Johnson, Phillip N.; Malaga, Jaime E.; Rejesus, Roderick M..
The department began producing formal reports of research activities in 1995/96 in conjunction with the establishment of the Cotton Economics Research Program; reports on Cotton Economics Research have been done annually since then. As our research programs expanded and diversified, we initiated a separate Departmental Research Report in 1998/99. With this annual report we are combining all research reporting into the single report, with more compartmentalization of research programs. This report highlights research activities in the Department of Agricultural and Applied Economics during fiscal year 2003/04. The overall program has been characterized by its flexibility in addressing varied issues of economic significance and is applied in nature,...
Tipo: Report Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 2004 URL: http://purl.umn.edu/31256
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Aquifer Depletion and the Cost of Water Conservation: The Southern High Plains of Texas Case AgEcon
Wheeler, Erin A.; Segarra, Eduardo; Johnson, Phillip N.; Willis, David B.; Johnson, Jeffrey W..
Irrigated agriculture has played a vital role in the development and growth of the Great Plains Region of the United States. The primary source of water for irrigation in this region is the Ogallala Aquifer. The Southern portion of the Ogallala Aquifer is considered exhaustible due to the low level of recharge relative to the quantities of water pumped. Analysis and evaluation of water conservation policies which could extend the economic life of the Ogallala Aquifer in the Southern High Plains of Texas and Eastern New Mexico, and which could contribute to maintaining the viability of the regional economy is important. This study evaluates the impacts of water conservation policies which limit drawdown of the Ogallala Aquifer. County level dynamic...
Tipo: Conference Paper or Presentation Palavras-chave: Water conservation; Water policy evaluation; Aquifer management; Dynamic optimization; Resource /Energy Economics and Policy.
Ano: 2006 URL: http://purl.umn.edu/25410
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CURRENT STATE AND FUTURE DIRECTIONS OF SAEA AgEcon
Segarra, Eduardo.
Tipo: Journal Article Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 1998 URL: http://purl.umn.edu/15089
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Economic Evaluation of Plant Stress Impacts in the Texas North Plains Region AgEcon
Middleton, Marty; Segarra, Eduardo; Johnson, Phillip N.; Haynes, Aubrey.
Tipo: Report Palavras-chave: Environmental Economics and Policy; Production Economics.
Ano: 1996 URL: http://purl.umn.edu/53172
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Economic Impacts of Pesticide Availability in U.S. Sorghum Production AgEcon
Segarra, Eduardo; Morrison, William P.; Abernathy, John R.; Gwinn, Christopher.
A national pesticide-use survey from sorghum producers and a survey of entomologists and weed scientists were used to determine the impacts of pesticide use on sorghum. A market framework was employed to derive the short-run welfare impacts to consumers and producers (users and non-users) of the removal of pesticides currently registered for use on sorghum. It was projected that the loss of atrazine, the most widely used pesticide in sorghum production, would have the largest overall impact, with an estimated total welfare loss between $58 and $65 million.
Tipo: Journal Article Palavras-chave: Sorghum; Pesticide regulation; Consumer impacts; Producer (user and non-user) impacts; NAPIAP; Agribusiness; Crop Production/Industries.
Ano: 1996 URL: http://purl.umn.edu/90378
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Economics of Management Zone Delineation in Cotton Precision Agriculture AgEcon
Velandia, Margarita M.; Rejesus, Roderick M.; Segarra, Eduardo; Bronson, Kevin.
This paper develops a management zone delineation procedure based on a spatial clustering approach and evaluates its economic impact for the case of Texas cotton production. The results show that there is potential economic value in using a spatial approach to management zone delineation, but its value critically depends on the cost of collecting soil test information needed to delineate those zones.
Tipo: Conference Paper or Presentation Palavras-chave: Management Zones; Exploratory Spatial Data Analysis; Site-Specific Nitrogen Management; Cotton Precision Agriculture; Crop Production/Industries; Q12.
Ano: 2006 URL: http://purl.umn.edu/25783
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Economics of Management Zone Delineation in Cotton Precision Agriculture AgEcon
Velandia, Margarita M.; Rejesus, Roderick M.; Segarra, Eduardo; Bronson, Kevin.
This paper develops a management zone delineation procedure based on a spatial statistics approach and evaluates its economic impact for the case of Texas cotton production. With the use of an optimization model that utilizes a yield response function estimated through spatial econometric methods, we found that applying variable N rates based on the management zones delineated would result in higher cotton yields and higher net returns, above Nitrogen cost, relative to uniformly applying a single N rate for the whole field. In addition, a variable rate N application using the delineated management zones produced higher net returns, above Nitrogen cost, relative to a variable N rate system where the zones are based solely on landscape position. This is...
Tipo: Conference Paper or Presentation Palavras-chave: Management Zones; Exploratory Spatial Data Analysis; Site-Specific Nitrogen Management; Cotton Precision Agriculture.; Crop Production/Industries; Q1; Q16.
Ano: 2006 URL: http://purl.umn.edu/35387
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EVALUATION OF WATER CONSERVATION POLICY ALTERNATIVES FOR THE SOUTHERN HIGH PLAINS OF TEXAS AgEcon
Johnson, Jeffrey W.; Johnson, Phillip N.; Segarra, Eduardo; Willis, David B..
Three alternative groundwater conservation policies were examined for their impact on the regional economy of the Southern High Plains of Texas using nonlinear optimization models and an input-output model. Restriction of drawdown of the aquifer was found to be more effective than proposed water use fees.
Tipo: Conference Paper or Presentation Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2004 URL: http://purl.umn.edu/34788
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FARM LEVEL DYNAMIC ANALYSIS OF SOIL CONSERVATION: AN APPLICATION TO THE PIEDMONT AREA OF VIRGINIA AgEcon
Segarra, Eduardo; Taylor, Daniel B..
A conceptual optimal control theory model which considers farm level decision making with respect to soil management is developed. A simplified version of the theoretical model is applied to the Piedmont area of Virginia. The model includes the productivity impacts of both soil erosion and technological progress. Both the theoretical model and its empirical application are improvements over previous efforts. Results suggest that farmers in the study area can achieve substantial reductions in soil erosion by adopting alternative farming practices.
Tipo: Journal Article Palavras-chave: Farm Management.
Ano: 1987 URL: http://purl.umn.edu/30204
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Irrigation Technology Adoption in the Texas High Plains: A Real Options Approach AgEcon
Seo, Sangtaek; Segarra, Eduardo; Mitchell, Paul D.; Leatham, David J..
Water scarcity has been a significant issue for several decades in the Texas High Plains, with agriculture identified as the main activity contributing to this scarcity. To address this issue, much effort has been devoted to developing and encouraging adoption of sophisticated irrigation systems with high levels of water application efficiency, such as the low energy precision application (LEPA) system, subsurface drip irrigation (SDI), and variable rate irrigation (VRI). In this study, the economic feasibility of these irrigation systems is evaluated in cotton farming in the Texas High Plains using a real options approach. Results find that only the LEPA system is profitable under current conditions. The VRI system is profitable with high cotton...
Tipo: Conference Paper or Presentation Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2006 URL: http://purl.umn.edu/21427
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NITROGEN CARRY-OVER IMPACTS IN IRRIGATED COTTON PRODUCTION, SOUTHERN HIGH PLAINS OF TEXAS AgEcon
Segarra, Eduardo; Ethridge, Don E.; Deussen, Curtis R.; Onken, Arthur B..
A dynamic optimization model which introduces an intertemporal nitrate-nitrogen residual function is used to derive and evaluate nitrogen fertilizer optimal decision rules for irrigated cotton production in the Southern High Plains of Texas. Results indicate that optimal nitrogen applications critically depend on initial nitrate-nitrogen levels and nitrogen-to-cotton price ratios. Also, the results indicate that single-year optimization leads to suboptimal nitrogen applications, which helps explain long-term cotton yield declines in the Southern High Plains of Texas; but single-year optimization does not significantly impact the net present value of returns of irrigated cotton operations.
Tipo: Journal Article Palavras-chave: Crop Production/Industries.
Ano: 1989 URL: http://purl.umn.edu/32359
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Optimal Groundwater Extraction under the Linear Response and Plateau Technology AgEcon
Wang, Chenggang; Segarra, Eduardo.
This paper studies the optimal management of groundwater resources when agronomic and hydrologic constraints bind the use of groundwater for irrigation. The binding constraints lead to a perfectly inelastic demand for groundwater. In the case of symmetric agents the social and private rates of groundwater extraction coincide with one another and commonality is completely innocuous; in the case of asymmetric agents the rate of extraction remains the same in the social and private setting, yet irrigation is abandoned by the same agent at different times. The model offers one way to rationalize the empirically found peculiarities of sticky water demand and Gisser-Sanchez Effect which defy conventional theory. The situations described in the model also...
Tipo: Conference Paper or Presentation Palavras-chave: Common property resource; Groundwater; Linear response and plateau technology; The law of the minimum.; Resource /Energy Economics and Policy.
Ano: 2009 URL: http://purl.umn.edu/51432
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Policy Alternatives for the Southern Ogallala Aquifer AgEcon
Wheeler, Erin A.; Segarra, Eduardo; Johnson, Phillip N.; Johnson, Jeffrey W.; Willis, David B..
Due to declining water levels in the Ogallala Aquifer, policy alternatives for extending the life of the aquifer for irrigation and other purposes are evaluated. The study concludes that blanket water conservation policies for the region are likely to be inefficient because of economic and hydrologic differences in the region.
Tipo: Conference Paper or Presentation Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2006 URL: http://purl.umn.edu/35269
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Precision Farming by Cotton Producers in Twelve Southern States: Results from the 2009 Southern Cotton Precision Farming Survey AgEcon
Mooney, Daniel F.; Roberts, Roland K.; English, Burton C.; Lambert, Dayton M.; Larson, James A.; Velandia, Margarita M.; Larkin, Sherry L.; Marra, Michele C.; Martin, Steven W.; Mishra, Ashok K.; Paxton, Kenneth W.; Rejesus, Roderick M.; Segarra, Eduardo; Wang, Chenggang; Reeves, Jeanne M..
Precision Farming by Cotton Producers in Twelve Southern States: Results from the 2009 Southern Cotton Precision Farming Survey
Tipo: Report Palavras-chave: Cotton; Precision farming; Survey; Agribusiness; Farm Management; Production Economics; Research and Development/Tech Change/Emerging Technologies.
Ano: 2010 URL: http://purl.umn.edu/91333
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PRECISION FARMING IN IRRIGATED CORN PRODUCTION: AN ECONOMIC PERSPECTIVE AgEcon
Watson, Susan; Segarra, Eduardo; Machado, Stephen; Bynum, Edsel; Archer, Thomas; Bronson, Kevin.
A dynamic optimization model is used to assess the profitability of precision and whole-field farming in corn production. Yield, on the average, was higher under whole-field farming practices, while net present value of returns was higher under precision farming, on the average, by 7.41% and 8.15%, respectively.
Tipo: Conference Paper or Presentation Palavras-chave: Precision farming; Mathematical optimization; Technology adoption; Crop Production/Industries.
Ano: 2003 URL: http://purl.umn.edu/35053
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