Effects of Weed Control Treatments on Wheat Crop and Associated Weeds

A field experiment was conducted in wheat during rabi season 2011–12 on sandy loam soil at Crop Research Centre, Chirodi of Sardar Vallabhbhai Patel University of Agriculture & Technology, Meerut (U.P.). The experiment was conducted in R. B.D with three replications comprising ten treatments of weed management, clodinafop 60 g a.i ha⁻¹, sulfosulfuron 25 g a.i ha⁻¹, metribuzin at 105 g a.i ha⁻¹, carfentrazone 40 g ai ha⁻¹, clodi.+ metri 60 +122.5 g a.i ha⁻¹, clodi.+ metri 60 +105 g a.i ha⁻¹, sulfo.₊ metri 25 +105 g a.i ha⁻¹, sulfo.₊ carfen. 25 + 40 g a.i ha⁻¹ as post emergence and weed free and weedy. The results indicated that plant population, plants height, maximum number of tillers/meter row length, dry matter accumulation, highest grain yield (55.13 q/ha⁻1).straw yield(78.08 q/ha⁻¹) significantly reduced the weed population, dry weight of weed, highest weed control efficiency and minimum loss of nutrient were recorded with the application of sulfosulfuron.₊ metribuzin 25 + 105 g a.i ha⁻¹ as post emergence established its superiority over rest of the herbicides. Similarly application of sulfosulfuron.₊ metribuzin 25 +105 g a.i ha⁻¹ as post emergence resulted into higher gross return (90362.05), net return (63453.59 ha⁻¹) and B: C ratio (2.48).