Effect of Weed and Nitrogen Management on Weed Control and Productivity of Wet Seeded Rice

Pre-emergence application of pretilachlor with safener supplemented with one hand weeding at 40 days after sowing provided better weed control and higher grain yield than the two hand weedings done at 20 and 40 days after sowing. Intercropping of Sesbllnia aeuleata and dual cropping of azolla with rice resulted in reduced density and dry weight of weeds. Regarding nitrogen management, 100% N+S. acu/eata intercropping+azolla dual cropping had a positive impact on yield attributes and thereby produced higher grain yield.