文章基本信息

标题：Soil conservation and technical efficiency among hillside farmers in Central America: a switching regression model
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作者：Solis, Daniel ; Bravo-Ureta, Boris E. ; Quiroga, Ricardo E. 等
期刊名称：Journal of Food Distribution Research
印刷版ISSN：0047-245X
出版年度：2007
期号：SUPPL
页码：491-510
出版社：Food Distribution Research Society
摘要：The main objective of this paper is to evaluate and analyse technical efficiency (TE) levels for hillside farmers under different levels of adoption of soil conservation in El Salvador and Honduras. A switching regression model is implemented to examine potential selectivity bias for high and low level adopters, and separate stochastic production frontiers, corrected for selectivity bias, are estimated for each group. The main results indicate that households with above-average adoption show statistically higher average TE than those with lower adoption. Households with higher adoption have smaller farms and display the highest partial output elasticity for land. Constraints in the land and credit markets are likely explanations for these differences. In addition, all estimated models show that TE has a positive and significant association with education and extension.
关键词：Central America;soil conservation;stochastic frontiers;switching regression;technical efficiency