Effect of nitrogen and sulfur fertilization on yield components, seed and oil yields of canola.

摘要

Field experiments were conducted to evaluate the effects of nitrogen (N) and sulfur (S) levels and their methods of application on canola. Branches plant-1, pods plant-1 and biological yield significantly increased with increase in nitrogen level and no significant increase in seed pod-1 and seed and oil yields occurred beyond 120 kg N ha-1. However, thousand seed weight consistently decreased with increasing level of nitrogen. Pods plant-1 and biological yield continually increased with increase in sulfur level. Alternatively, significant increase in branches plant-1, seed pod-1, seed weight, seed and oil yields was noted with increase in sulfur level up to 40 kg ha-1. Applications of sulfur and nitrogen in split significantly decreased seed yield as compared to sole applications. It is concluded that sulfur and nitrogen application as sole at the rate of 40 and 120 kg ha-1, respectively performed better than the rest of their levels and method of application.