GÜNEYDOĞU ANADOLU PROJE ALANLARINDA SULAMA SUYU KULLANIMININ DEĞERLENDİRİLMESİ

In this study, the irrigation water use was evaluated in the irrigated areas in the GAP Region. Harran, Hancağız, Batman-Silvan ve Devegecidi irrigation systems in the GAP Region were considered in the study. Datas on crop pattern, net irrigation water requirements for the plants which are grown in those areas, applied irrigation water were obtained from State Hydraulics Works (DSİ). Efficient use of irrigation water was examined for the different crops grown in the GAP Region using these data. According to the results, it was determined that irrigation water used by farmers is 2-6 times more than planned water in the irrigation systems. Hence, the effective use of the irrigation water was found to be lowest in the all of the systems. Generally, it was obtained that the use of irrigation water decreased to 30 percent level. Therefore, the excessive use of water was encountered in the irrigation events. it is unavoidable that the soils in the region can be lost in a short time from salinisation-alkalisation and shallow ground water table problems by the excessive use of water in the applications. To attain high efficiency in irrigations, the suitable irrigation programmes in which enough water is given at the proper time, must be used. On the other side, irrigation water certainly, has to be measured at the head of the fields than are diverted to the farmers. Water fee must be collected as volume-TL basis not plant-area. Farmers must continuously be educated on irrigated agriculture.