Improving Irrigation Water Management in Delta of Egypt

Water management is an important element of irrigated crop production. This study is carried out in two stages. In the first stage, performance of irrigation water management is assessed using two models for irrigation schedule by calculating eapo-transpiration and studying the effect of relative evapo-transpiration on relative yield of crop and the effect of depth of water irrigation on the net revenue, and in the second stage the effect of saline water in crop production is studied by mixing supply of saline drainage water, moderately sewage water, and fresh water in six ratios applied on crops yield which cultivated in Delta of Egypt. Moreover yield is high in alternate practice only with fresh water, whereas moderate saline irrigation waters in mixed practice gave the highest values of yield and growth. There is a strong negative relationship between crop yield and seasonal average of electrical conductivity of the soil solution.