Pantnagar Journal of Research

Abstract

A field experiment was conducted during Rabi season of 2022-2023 at Research Farm of Graphic Era Hill University, Dehradun, Uttarakhand with an objective to assess integrated weed management practices on weed dynamics, growth and productivity of wheat (Triticum aestivum L.,). The experiment consisted of ten weed management treatments were laid out in randomized block design with three replications. Amongst weed management treatments -pre-emergence application of pendimethalin 1 kg/ha fb1 HW (30 DAS) significantly reduced the weed density, dry weight of grassy and non-grassy weeds while recorded highest weed control efficiency (70.7%). Amongst various weed management treatments, maximum grain and straw yield (4233 and 5020 kg/ha, respectively) was also recorded with pendimethalin 1 kg/ha PE fb 1 HW (30 DAS) followed by pendimethalin 1 kg/ha PE fb metribuzin 42% + clodinafop- propargyl 12% WG (0.210 + 0.06 kg/ha) PoE (premix). Superiority of these treatments were proved by increment of yield of grain to the tune of 139.6 and 130.9% respectively over weedy check and only 3.8% and 7.3% respectively lesser than the weed free treatment. Pendimethalin 1 kg/ha PE +1 HW (30 DAS) also proved to be more effective in improving yield attributes like spikes/m2, spike length (cm), no. of grains/spike, grain weight/spike (g) and 1000 grain weight (g).