Effect of graded levels of nitrogen and sulfur and their interaction on yields and quality of aromatic rice.

摘要

In a greenhouse experiment, involving factorial combinations of nitrogen (N) (0, 15, 30, 45, and 60 mg kg-1 soil) and sulfur (S) (0, 7.5, 15.0, 22.5, 30.0 mg kg-1 soil), application of all levels of N and S 15 mg kg-1 and above increased the grain yield of aromatic rice (Basmati cv. 'Taraori') significantly. The highest grain yield of aromatic rice was recorded from the treatment combinations of 60 mg N+15 mg S kg-1 or 45 mg N+30 mg S kg-1. The interaction of N and S influenced the N and S content in rice grain, N content in straw, N:S ratio both in grain and straw, milling (%), and other quality parameters significantly. Milling (%) and hulling (%), thousand grain weight, L:B ratio, cooked grain breadth, and aroma score were found to be significantly and positively correlated with the N:S ratio of rice grain while grain breadth had a significant inverse relationship with N:S ratio in grain..