Abstract

This experiment was conducted at Al- Sheri khan which located North of Mosul to study the effect of the irrigated area (144,216 and 270) m2 ,the shape of irrigated area (square, rectangular and triangle ) and the the riser height 0.6, 0.9 and 1.6 m on all of coefficient of uniformity (CU%) and Distribution uniformity (DU%). Results indicated that clear differences at the three treatments. The smallest area 144 m2 gave highest coefficient of uniformity (CU%) and Distribution uniformity (DU%) 77.16% and 62.97% respectively. Also the area (square shape) was superiority compared with another shapes, and gave the highest (CU%-- DU%) with increased ratio 27.93%-- 45.59% respectively. The increasing in riser height 0.6, 0.9and 1.6m gave the highest values of (CU%-- DU%), and the 1.6m riser height gave 71.74and 59.85% (CU%--DU%)compared with riser height 0.9—0.6m respectively with clear increasing 10.65-18.98%.