Studying Efficiency of Water Use in Sistan Greenhouses

Document Type : Research Paper

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Abstract

One of the main objectives of promoting the development of greenhouses in Iran is increasing production productivity and water use efficiency. Accordingly, in this study the efficiency of water use in Sistan greenhouses was investigated for 2008 using Data Envelopment Analysis (DEA). In addition, determinants of water use efficiency were investigated using Tobit Regression Model (TRM). The results showed that the mean efficiencies of greenhouse units under study in the constant and variable return to scale conditions were 63 and 87 percent, respectively. Also, the mean efficiencies of irrigation water in the constant and variable return to scale conditions were 49 and 71 percent, respectively. Based on the results, in the variable return to scale condition, age, education, experience and water resource had positive and size of land had negative effect on water use efficiency. According to the findings, a suitable irrigation water price policy and extension classes seem to be effective on improvement the operation of units under study.
 

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