Author(s):

Sunita Kumari, Devendra Kumar, Narendra Kumar Mehta and Veena Shahi

Abstract: An OFT (on farm trial) was conducted on KVK, Vaishali, Dr. RPCAU, Pusa, Samstipur in two consecutive kharif seasons of years 2015 and 2016 on selected five farmers’ field with 6 treatments to find out the effect of different weed management practices to control complex weed flora in rice (<em>Oryza stiva</em> L) crop. Mean data of two years experimentation indicated that the application of various weed management practices significantly increased yield attributes viz. no. of panicles/ square meter, no. of grains/ panicle and 1000- grain weight. Yield and monetary income of rice crop were significantly influenced by application of weed management practices. Among all treatments, application of bispyribac- sodium @ 25 g ai/ha resulted in higher no. of panicles/ square meter (221.0), the maximum grain yield (4.05 t/ha), net return (40812 Rs/ha) and B:C ratio (1.58) which was superior to rest of the treatments. The highest weed control efficiency was recorded with bispyribac- sodium closely followed by two hand weeding (20 &amp; 40 DAT). Two year study indicates that the application of bispyribac- sodium 25 g ai/ha was the best for higher yield and net returns from rice.

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