A thesis at the College of Agriculture at the University of Basrah, Department of Field Crops, investigated the effect of levels of nitrogen and spraying with gibberellin and ethephon on the growth, yield and quality of the Brassic napus L. crop. The study presented by researcher Sondos Kamel Jabbar and under the supervision of Professor Dr. Lamia Mahmoud, aimed to determine the optimal level of nitrogen fertilizer, which It gives the best yield in quantity and quality, determines the best concentration of both gibberellin and ethephon, and determines the best level of interaction between the study factors that achieves the best yield of rape in quantity and quality.
