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Abstract The aim of this work is to study the effect of both amount and intervals of irrigation water on crop production. specific objectives of this study were:1-Analyse the regime of the water table and its contribuation to consumptive use of different crops.2-Determining the soil water plant relations such as, crop evapotranspiration,crop coefficient adjusted for the contribuation of water table,soil moisture extraction pattern and the optimum irrigation efficiency.3-Find out the optimum irrigation water for acomplete crop rotation in the studied area. |