Abstract
An on-farm trial was conducted during the winter ( rabi) seasons of 201011 and 201112 at five farmers field, to validate, refine and popularize the technology developed at Maharana Pratap University of Agriculture and Technology , Udaipur, for managing weeds in wheat [ Tr iticum aestivum (L.) emend. Fiori & Paol.] crop. Effective- ness of isoproturon @ 1.0 kg ai/ha and tank-mix application of metsulfuron-methyl with clodinafop @ 60 g ai/ha and sulfosulfuron @ 25 g ai/ha over farmers practice (2,4 D @ 0.75 kg ai/ha) was studied on weed growth and profitability of wheat. Tank-mix application of metsulfuron-methyl @ 4 g ai/ha with clodinafop and sulfosulfuron at 35 days after sowing significantly reduced the weed density and resulted in respectively 26.2% and 18.9% higher grain yield, net returns ( 12,997 and 9,436), benefit: cost ratio (0.54 and 0.39) and energy output (27,077 MJ and 20,775 MJ) higher over farmers practice.
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