Ragheb H. A. AL-Bourke Muthanna University / College of Agriculture Volume 4, Issue 1, 2016 Page 64-76 Abstract A field experiment was carried out at first research station (Um- alaakf ) field crop department / Collage of Agriculture/ University of al- Muthanna in season 2014-2015. The study was investigated the effect of spraying zinc and […]