Effect Of Nitrogen Fertilizer Rates on Seed Yield And Oil Quality of Linseed (Linum Usitatissimum L.) Varieties in Welmera District, Central Highland of Ethiopia

Linseed (Linum usitatissimum L.) is one of the most important oilseed crop in the central highlands of Ethiopia. However, poor soil fertility management and lack of improved varieties affect its seed yield and oil quality. Therefore, an experiment was conducted to evaluate the effects of nitrogen fertilizer rates on yield, and oil quality of linseed varieties in Welmera district. The experiment was laid out in a randomized completed block design with three replications. The treatments were factorial combinations of three linseed varieties (Bekoji-14, Jeldu, and Kulumsa-1) and five rates of Nitrogen (0, 11.5, 23.0, 34.5, and 46.0 kg N ha-1). The analysis of variance showed that the main effect nitrogen and varieties significantly (P