Determination of the Production efficiency on the water consuming in the basin of Dasht-Sefidrud

Always, one of the expert subjects has been being the low irrigation efficiency and water utilization in agriculture for the surface flows. To investigate this issue, basin of Dasht-Sefidrud which only use the surface water, was selected as the study pattern. Then, based on the region's major product, it was sampled the transmission efficiency, water use efficiency and water utility in the field. Results showed that the transmission efficiency in irrigation networks with concrete cover was between 75 to 92 percent whereas, if the canal has been terrestrial and long, the irrigation efficiency would have reduced to 37/7 percent. Water use efficiency in farms under pressure of drip and sprinkler irrigations is more than 90 percent, but if the system is not be managed well, the efficiency will be reduced and reached to 63 percent. Water use efficiency in gravity irrigation is very variable, so that rice fields in which irrigation is as water flooding, the irrigation efficiency will come to 57 to 76 percent, respectively. If the management and plot size and dimensions are not appropriated, the irrigation efficiency will be greatly reduced and reached to 29 percent. Irrigation efficiency is obtained by multiplying the transmission efficiency in application efficiency. The minimum measured efficiency has been 14.2 percent and its maximum in pressure irrigation system was 95/1 percent, that the average of those will be about 57/7 percent. High level of irrigation efficiency caused the farmers recognize the importance of water and water management in recent years, and increase the irrigation efficiency in their farms and gardens.