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A field experiment was conducted during the Rabi (winter) season of 2014-15 and 2015-16 at Agricultural Research Station, Dharwad, Karnataka, India to evaluate the efficacy of tank mix herbicides and premix herbicides on weed control and its influence on productivity and profitability in irrigated wheat. Tank mix application of sulfosulfuron + metsulfuron 25 + 4 g/ha recorded significantly higher grain yield (4.31 t/ha) followed by clodinafop + metsulfuron 60 + 4 g/ha (4.15 t/ha) over weedy check. Biological yield was recorded significantly higher with clodinafop + metsulfuron 60 + 4 g/ha (12.21 t/ha) followed by sulfosulfuron + metsulfuron 25 + 4 g/ha (12.18 t/ha) over 2,4-D 2.5 kg/ha (10.68 t/ha) alone. The lower weed density, weed biomass and higher weed control efficiency was recorded with sulfosulfuron + metsulfuron 25 + 4 g/ha followed by clodinafop + metsulfuron 60 + 4 g/ha compared to weedy check. The more gross returns, net returns and benefit : cost ratio was obtained with sulfosulfuron + metsulfuron 25 + 4 g/ha over other weed management practices.

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A field experiment was carried out in medium deep black soil in farmer's field of Mugali village, Ron taluka in Gadag district during kharif 2011 under rainfed condition to find out effect of pre and post emergence herbicides for weed management in chilli + onion intercropping system. The experiment was laid out in a randomized block design with three replications. The experiment consisted of 8 treatments involving five pre emergence herbicides viz.