Author(s):

Alisha Kumari, Rajan Kumar, Vinod Kumar, Sweeti Kumari and Shabana

Abstract: A field experiment was conducted during rainy (kharif) season of 2016 at Crop Research centre Pusa, Bihar to investigate the “Effect of Moisture Regimes and Weed Management on weeds, yield and economics of Direct Seeded Rice”. The treatments consisted of three moisture regimes in main plots and five weed management practices in sub plots. The results showed that weed density and weed dry weight was minimum and grain yield, gross return and net return were found to be maximum with I₁ moisture regimes which were significantly superior to I₂ and I₃. B: C ratio was maximum with I₁ moisture regime which was statistically at par with I₂ and significantly superior to I₃.With regard to weed management lowest weed density and weed dry weight was found with W₄ treatment which was significantly superior to all the treatments. Maximum weed control efficiency and minimum weed index was observed with W₃ among all the herbicidal treatments, though weed control efficiency was the highest with W₄ treatment. Grain yield and gross return were recorded maximum with W₄ treatment of weed management which was significantly superior to W₂, W₁ and W₅ but was statistically at par with W₃ treatment. Net return was recorded maximum with W₃ treatment which was significantly superior to W₄ and W₅ but was statistically at par with W₂ and W₁. B: C ratio was recorded maximum with W­₂ treatment which was significantly superior to W₄ and W₅ but was statistically at par with W₃ and W₁ treatments.

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