Hassan NA, Nafawa SM. STUDYING SOME TECHNICAL INDICATORS EFFECT OF TWO MECHANICAL SEEDER ON TILLAGE SYSTEMS FOR FORAGE YIELDS OF BARLEY VARIETY SAMEER IN GYPSUM SOIL. DASJ [Internet]. 2016 Jun. 30 [cited 2024 Apr. 25];8(1):148-60. Available from: https://journal.djas.uodiyala.edu.iq/index.php/dasj/article/view/1424