Alwan TA, Abdulrahman AL, Aswad IK. EFFECT OF IRRIGATION SYSTEM AND SOIL LEVELING STATUS ON YIELD AND WATER USE EFFICIENCY BY MAIZE IN CALCAREOUS SOIL . DASJ [Internet]. 2009 Dec. 30 [cited 2026 Apr. 30];1(2):37-51. Available from: https://journal.djas.uodiyala.edu.iq/index.php/dasj/article/view/3167