EFFECT OF INTEGRATED WEED MANAGEMENT ONWEED DYNAMICS, YIELD AND ECONOMICS OF SOYBEAN (GLYCINE MAX L.)1Basa Bharath Kalyan, 2Pradeep Kumar Kanaujiya, 2Pradeep Rajput, 2Jaidev Sharma and 3AwadhesAbstract The experiment entitled âEffect of Integrated weed management on weed dynamics, yield and economics of Soybean (Glycine max L.)â, was conducted at the Crop Research center, School of Agriculture, ITM University, Gwalior (M.P.), India during the kharif season of the year 2022. The experiment consisted of twelve treatments and three replications laid out in Randomized block design with the application of different pre and post emergence herbicides, along with two hand weedingâs at 20 and 40 DAS and weedy check treatments. The herbicides were used individually as well as in sequence with hand weeding practices. All the weed control treatments showed significant reduction of weed flora, weed density and weed biomass as compared to weedy check. Two hand weedings at 20 and 40 DAS recorded significantly less the weed density (66.25 no. m-2), weed dry matter accumulation (46.33 g m-2) and attained the higher weed control efficiency (81.53 %), no. of pods plant-1 (32.27), no. of seeds pod-1 (3.07), grain yield (2094 Kg ha-1) and straw yield (2826.90 Kg ha-1) and found at par with the post-emergence application of Imazethapyr + Imazamox @ 70 g a.i. ha-1 fb HW (at 40 DAS) and Imazethapyr @ 125 g a.i. ha-1fb HW (at 40 DAS). The maximum net returns and B-C ratio were recorded higher with Imazethapyr + Imazamox @ 70 g a.i. ha-1fb HW (at 40 DAS). |