جاسم رحيم علوان هلول. 2015. “Effect of Source and Level of Foliar Zinc Application on Its Concentration in Grain , Growth and Rice Yield Variety Alyasmin ( Oryza Sativa L. ) ”. Journal of Kerbala for Agricultural Sciences 2 (1):147-56. https://doi.org/10.59658/jkas.v2i1.470.