Dynamic analysis of technical efficiency of water use in crop (DEA approach)

The recent drought along with the increased water demand in various economic sectors has increased the need for attention to improved water use efficiency and improves productivity, especially in agriculture. Planning to efficiency Improvement without determination of the present situation and investigation of the past trend of efficiency may not. So in this study, using data and information of input consumption and output production related to the active sugarcane industry in Khuzestan province, Irrigation water use efficiency (IWUE) and efficiency of all inputs in crop production during the year's 2004 to 2015 using data envelopment analysis approach were calculated and compared. The results showed that Imam Khomeini Company in terms of use of water resources has better performance than other firms. So, average efficiency of water use for the cultivation of sugarcane during the period studied is about 70% and average efficiency of general inputs for production is about 80 percent. This means that now, with better management of water resources consumption, there is acquisition potential of existing production level in active units with less water in the production of sugarcane.