Effect of Graded Levels of Nitrogen and Sulfur and Their Interaction on Yields and Quality of Aromatic Rice

ABSTRACT

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.

Keywords::

• aromatic rice
• N ×
• S interaction
• rice quality parameters

Notes

∗∗significant at p ≤ 0.01

∗significant at p ≤ 0.05.