Abstract
Abstract
The issue of estimating wasted water-which is defined as the amount of water that the plant does not benefit from, and which runs out from the root zone, that is, it passes through the root zone through the process of loss through deep percolation- as a result of the irrigation process. it is an approximation and not completely true for various reasons. To estimate the depth of wasted water, must estimate the irrigation performance indicators, which in turn determine the depth of wasted water, so must know the uniformity of irrigation and the adequacy of irrigation. The amount of irrigation should be adequate and distributed with good uniformity. Sometimes the irrigation is adequate, but the distribution is inconsistent, and vice versa, so this methodology will address the cases of irrigation more than required ’Overwatering condition’ and irrigation less than required ‘Underwatering condition’, the important irrigation indicators (Adequacy ‘Ad’, Christiansen Coefficient ‘CU’, and Distribution Uniformity ‘DU’), and how to estimate the depth of wasted water. This, in turn, leads to improving the sustainability of irrigation water by estimating the amount of irrigation water without wastage, that is, rationing irrigation water and the possibility of increasing water rationalization while obtaining uniform plant growth in the field as much as possible, and this in turn is reflected in increasing the characteristics of the crop in quantity and quality.