Effect of nitrogen levels and green manuring on grain and straw yield in Basmati rice varieties

Abstract

The field investigation entitled Effect of nitrogen levels and green manuring on grain and straw yield of Basmati rice (Oryza sativa L.) varieties was conducted at research farm of Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, Haryana, India during kharif 2022. The experiment treatments were arranged in split plot design with three replications. The treatment consisted of four Basmati rice varieties Punjab Basmati 7, Punjab Basmati 5, Pusa Basmati 1718 and Pusa Basmati 1121 and seven combination treatments of green manuring (GM) and urea (Nitrogen) viz. T1 (No GM + 100% RDN), T2 (No GM + 10% more than RDN), T3 (GM + 10% more than RDN), T4 (GM + 10% less than RDN), T5 (GM + 20% less than RDN), T6 (GM + 30% less than RDN), T7 (No GM + 20% more than RDN) to supply nitrogen to the crop. The variety Punjab Basmati 7 had the highest growth, yield and yield attributes compared to other varieties. Likewise, for these traits treatment combination the treatment T3 [GM + 10% more than RDN (Urea)] registered better growth and yield parameters over other treatments. Therefore, it is recommended to optimize nitrogen levels in combination with green manuring for sustainable rice production.