1. Associate Professor, Dept. of Irrigation, Univ. of Harran, Agriculture Faculty, 63200 Sanliurfa, Turkey (corresponding author).
2. Assistant Professor, Dept. of Irrigation, Univ. of Harran, Agriculture Faculty, 63200 Sanliurfa, Turkey.
3. Research Scientist, Dept. of Water Management, The Research Institute of Rural Services, P.O. Box 75, 63040 Sanliurfa, Turkey.