Improving Water Use Efficiency for Peanut (Arachis Hypigaea) Productivity by Using Irregular Volumetric Distribution of Compost under Drip Irrigation System

According to limited water in arid regions and its sharp drop per capita, we have to maximize water use efficiency under the best system for saving water (drip irrigation). To achieve this goal, two field experiments were carried out during growing seasons 2013 and 2014, it was executed in research farm of national research center (NRC) in Nubaryia province, Egypt, to study the effect of new engineering method for irregular volumetric distribution ratios of compost under reduction of emission uniformity on yield and water use efficiency of peanut crop. Study factors were irregular volumetric distribution ratios of compost on four zones along lateral were [D1= (25%,25%,25%,25% compost ), D2= (20%,20%,25%,35% compost ), D3= (15%,15%,30%,40 compost ) and D4= (10%,10%,35%,45% compost )] under reduction of emission uniformity (EU) and emitter discharge along lateral, [EU1= 90%, EU2 = 80%, and EU3 = 70%] .to study the effect of new engineering method for irregular volumetric distribution ratios of compost under reduction of emission uniformity on yield and water use efficiency of peanut crop. The following parameters were studied to evaluate the effect of study factors on: (1) Application efficiency along lateral. (2) Water stress along lateral (3) Yield of peanut, (4) Irrigation water use efficiency of Peanut "IWUE Peanut.