Biologie moléculaire : accès libre

Growth, Yield and Oil Quality of Canola (Brassica napus L.) Effect By Nitrogen Fertilizer and Seeding Rate

Abstract

: Saifaddin S. Ali

This study was conducted at “Girdarasha” research fields – College of Agriculture/University of Salahaddin-Erbil-Iraq–, during the winter season of (2017-2018) to determine the effect of seeding rates and nitrogen fertilizer on growth, yield, yield components and quality of canola (Brassica napus L.). Split plot designs with four replicates were used, Main plots represented by four nitrogen rates (0, 100, 200, 300 kg N/ha), While sub plots were represented by three levels of seeding rates (5, 6, 7 kg/ha). The following results were obtained: - Seeding rate of 5 kg/ha led to elongate the duration from emergence to inflorescence, increase of leaves number and total leaf area at 134 days from seeding, and led to increase of plant height, number of primary branches, then the number of siliques in compare to other seed rates, but the 7 kg/ha seed rate elongate the period from inflorescence to physiological maturity and the period from emergence to physiological maturity