Field experiments were conducted on rice (Oryza sativa L.) to evaluation of weed dynamics as influenced by planting methods, water management and weed management of dry seeded rice, at irrigation plot (UGC, SAP project), Agricultural Research Farm, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi (Uttar Pradesh) for 2 years. The experiment was conducted in split plot design with four replications and 20 treatment combination. Significant reduction in weed density and weed index and maximum grain and straw yield was recorded in furrow irrigated raised bed system of planting. Among the water management, alternate wetting and drying recorded significantly lower weed density and weed index during both the years. Whereas saturation to field capacity accounted maximum grain and straw yield. Among herbicide treatment the flufenacet 120 g a.i./ha fb pyrazosulfuron 20 g a.i./ha + bispyribac sodium 25 g a.i./ha at 4-6 leaf stage of weeds recorded significantly lower weed density and weed index and maximum grain and straw yield, during both the years of experimentation. The interactive effect of planting methods with weed management and water management with weed management also found significant in case of yields during both the years of study.

Dry seeded rice, weed index, AWD, FIRB

On the basis of result it can be concluded that furrow irrigated raised bed planting and saturation to field capacity treatment with flufenacet 120 g a.i./ha fb pyrazosulfuron 20 g a.i./ha + bispyribac sodium 25 g a.i./ha at 4-6 leaf stage of weeds was found to be most effective in minimizing weed density, higher weed index and enhance yield during both the year of experimentation.

Neelam Bisen Pawar and U. P. Singh (2025). Weed Dynamics as Influenced by Planting Methods, Water Management and Weed Management of Dry Seeded Rice. Biological Forum – An International Journal, 17(7): 227-232.