A Survey on Water Use Efficiency of Rice Producers in Kamfirouz Region, Fars Province, Iran

Regarding the increase in needs of human societies to agricultural products, increasing wateruse efficiency can lead to persistent use of limited water resources. therefore, in this study using dataenvelopment analysis (dea), technical, allocative, managerial and economic efficiency and alsooptimal level of inputs is surveyed in order to achieve maximum efficiency in marvdasht city in2010. furthermore, using sub-vector efficiency, water use efficiency (weu) of rice producers inkamfirouz region located in fars province, iran, is determined. the results showed the average oftechnical, allocative, economical and managerial efficiency are 72, 40, 28, 79 and 91 percentrespectively. average of weu with constant and variable return to scale (crs, vrs) assumptionswere 28 and 35 percent, respectively. rice producers have a potential to reduce the level of water useabout 65 percent, without reducing productions. based on the results, the worst uses of inputs arerelated to water, area and pesticide uses which are 40, 35 and 39.74 percent respectively. by findings,amendment of water prices' tariff as well as conducting some training meeting and courses in order tofully introduce scientific principles of planting, conservation and harvest in optimal usage ofproduction factors, specially water ,and also acquirement of farmers about periodic irrigation insteadof dipping irrigation is recommended.