Papers by Eduardo Segarra
Beltwide Cotton Conferences (USA), 1998
Desarrollo y Sociedad, Sep 1, 2004
Un análisis económico de la aproximación estadística para el establecimiento de zonas de manejo e... more Un análisis económico de la aproximación estadística para el establecimiento de zonas de manejo en agricultura de precisión: el caso de algodón en Texas *
A county-wide dynamic optimization model is used to evaluate the potential contributions associat... more A county-wide dynamic optimization model is used to evaluate the potential contributions associated with the adoption of sophisticated irrigation system technology and anticipated biotechnological advances in crop production on ground water conservation. The results indicate that adoption of these technologies could contribute significantly to ground water conservation efforts.
A fifty year model which considered the impacts of technological progress and topsoil loss on soi... more A fifty year model which considered the impacts of technological progress and topsoil loss on soil productivity, and discount rates on net present value was developed. While discount rates and technological progress directly affected income calculations, solutions were more robust with respect to alterations in technological progress than discount rates.
Texas Journal of Agriculture and Natural Resources, Nov 8, 2016
The objective of this study was to determine the farm level economic feasibility of converting a ... more The objective of this study was to determine the farm level economic feasibility of converting a standard 1/4 mile center pivot low pressure sprinkler irrigation system to a low energy precision application (LEPA) irrigation system for corn production in the Texas High Plains. It was found that the irrgation system results in increased water use efficiency, which further results in increased corn yields. Thus, LEPA is a viable irrigation option to producers in the Texas High plains because the benefits from its use outweigh the costs.
American Journal of Agricultural Economics, Jul 1, 2011
Resources Conservation and Recycling, Jun 1, 2001
The impact of technology adoption (advanced irrigation technologies and anticipated biotechnologi... more The impact of technology adoption (advanced irrigation technologies and anticipated biotechnological advances) on the sustainability of agricultural activities in the Texas High Plains of the US is evaluated in this study. Specifically, a county-wide dynamic optimization model is used to (a) determine optimal ground water use levels and cropping patterns, and (b) evaluate the impacts of irrigation technology and biotechnology adoption on ground water use. The results indicate that current cropland allocation and levels of advanced irrigation technology adoption are not close to optimal. Approaching the issue of sustainability, the results show that the net present value of returns trade-off to achieve ground water conservation, in terms of what producers would have to give up to achieve ground water supply stability, would be relatively small.
Journal of Agribusiness, Jul 21, 1989
Revista Chapingo. Serie: Horticultura, Aug 31, 2017
T he strawberry is Mexico's thirteenth biggest export product and ranks third in value of exports... more T he strawberry is Mexico's thirteenth biggest export product and ranks third in value of exports, with the state of Michoacán being the leading exporter. The aim of this research was to analyze the potential for strengthening Michoacán strawberry exports to the United States, assuming the possibility of increasing exports from the state. The production growth rate, export forecast, and supply and demand for strawberry in Mexico and the U.S. were analyzed by means of logarithmic regression models processed in Statistical Analysis System (SAS) software. It was found that production grew more due to the increase in yield than to the increase in planted area; in addition, there is no evidence that strawberry exports are losing their upward growth trend. The price elasticity of the strawberry supply for Mexico and the US is inelastic, so there is still potential to increase strawberry exports. Resumen L a fresa es el décimo tercer producto de exportación en México y ocupa el tercer lugar en el valor de las exportaciones, siendo el estado de Michoacán el principal exportador. El objetivo de esta investigación fue analizar el potencial de exportación de fresa de Michoacán a Estados Unidos de América (E.U.A.), asumiendo la posibilidad de incrementar las exportaciones del estado. Se analizó la tasa de crecimiento de la producción, la proyección de exportaciones, y la oferta y demanda de fresa en México y E.U.A.; lo anterior mediante modelos de regresión logarítmicos procesados en el programa Statistical Analysis System (SAS). Como resultado, se observó que la producción creció más por el incremento en el rendimiento que por aumento en la superficie sembrada; además, no existe evidencia de que las exportaciones de fresa tiendan a perder su tendencia creciente. La elasticidad precio de la oferta de fresa para México y E.U.A. es inelástica; por lo que aún existe potencial de exportación de fresa.
This paper uses an ordered logit model to examine the relationship between lint attributes and wa... more This paper uses an ordered logit model to examine the relationship between lint attributes and water and nitrogen inputs in cotton production. The ordered logit model is used because lint attributes are valued by grade and best defined as ordered categorical variables. Our data were obtained from a three-year experiment in a 48-ha center pivot field in a terminated-rye conservation tillage cotton system in Lemesa, Texas. We found that irrigation can increase the chance that lint has better elongation and color but, on the other hand, reduce the chance that lint has better micronaire and length attributes. Nitrogen was found to increase the chance of improved length and degraded color in cotton lint.
RePEc: Research Papers in Economics, Feb 5, 2011
The effectiveness of sources of information (SI) on adoption of precision farming technologies (P... more The effectiveness of sources of information (SI) on adoption of precision farming technologies (PFT) by US cotton producers is evaluated with data from the 2009 Southern Cotton Precision Farming Survey. The conceptual framework considers information flows as production inputs with a derived demand from the demand for PFT's and farm output. Coefficients of the chosen multivariate probit model are estimated with simulated maximum likelihood. The results indicate that information from the internet significantly affected the adoption of yield monitors with GPS and soil survey map technologies. Information from farm dealers impacted significantly the adoption of zone soil sampling technologies and soil survey maps. The use of university extension per se was not a statistically significant SI. Nevertheless, the use of university publications and attendance to events organized by universities had more consistent and significant positive effects on adoption of PFT's. Income, farmer's education and use of computer for management and field operations had positive effects as well. In conclusion, SI's have positive and asymmetric effects on adoption of PFT's. The paper ends providing recommendations for creation and delivery of outreach materials in the context of strategic communication plans executed by organizations serving this clientele.
The economic damages associated with the Red Imported Fire Ant's presence in selected economi... more The economic damages associated with the Red Imported Fire Ant's presence in selected economic activities in Texas were evaluated in this project. Red Imported Fire Ant's economic damages analyzed included damages to: electrical and communication equipment in selected sectors (churches, hospitals, airports, prisons, and electric, telephone and cable companies); economically significant wildlife species (white-tailed deer and northern bobwhite quail); major agricultural crops (soybeans, corn, grain sorghum, potatoes, grapefruit, oranges, and cotton); and cattle production. The aggregate damage of the Red Imported Fire Ant on the economic activities analyzed in this project was estimated at $484.5 million per year.
Texas Journal of Agriculture and Natural Resources, 2000
Journal of Agricultural and Applied Economics, Jul 1, 1998
Journal of Economic Entomology, Apr 1, 1993
Scarcity of suitable overwintering habitat is a major obstacle to the establishment of the boll w... more Scarcity of suitable overwintering habitat is a major obstacle to the establishment of the boll weevil, AnthonomlJs grandis grandis Boheman, in cotton-producing counties of the Texas High Plnins (THP). After introduction of the Conservation Reserve Program (CRP) in 1985, a 3-yr study was conducted to investigate the overwintering potential of the boll weevil in two CRP grass habitats on the THP. Overwintering survival of the boll weevil in leaf litter of sand shinnery oak, QIJetclls havardii (Rydberg), in the Texas Rolling Plains (TRP) served as II comparison. CRP grasses provide marginal overwintering habitat when compared with sand shinnery oak leaf litter. For a given level of winter severity, total winter survival and effective emergence (emergence after approximately 15 June in the study area) were consistently lower in the CRP gTllsses than in sand shinnery oak leaf litter. Even with lower survival rates in THP gTllsses, economically damaging boll weevil infestations could follow mild winters if large diapausing populations develop in the fall. Pheromone traps located in CRP pastures on the THP indicated a relatively low level of overwintered boll weevil emergence during all three study years.
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Papers by Eduardo Segarra