RELATIVE EFFICIENCY OF PRE- AND POST-EMERGENC HERBICIDES ON WEED DYNAMICS, YIELD PRODUCTIVE AND ECONOMICS OF GROUNDNUT (ARACHIS HYPOGAEA L.)Ajameera Dinesh Nayak, Pradeep Kumar Kanaujiya, Kalpana Mishra, Priyanka Chand and Jaidev SharmaAbstract A field experiment was conducted at the Crop Research Centre, School of Agriculture, ITM University, Gwalior (M.P.) during Kharif season 2022. The experiment was conducted with Randomized Block Design and replicated three times and comprised with ten treatments. The herbicides were used individually as well as in combinations viz; T1 to T9. The crop was infested with the different types of weed flora. eg; Dinebra retroflexa and Digitaria sanguinalis of grassy, Amaranthus viridis and Commelina benghalensis of Broad leaved and Cyperus rotundus of sedges group. Weed density of the different weed species and total weeds effected significantly due to different weed management practices, The result indicated that the total weed population and its dry weight, weed index were lowest with Oxyfluorfen (23.5%) at 100g ha-1 (PE) fb hand weeding (40 DAS). However, highest weed control efficiency was recorded with Oxyfluorfen (23.5%) at 100g ha-1 (PE) fb hand weeding (40 DAS) followed by Imazethapyr (35% EC + Imazamox (35% EC) at 180 g a.i. ha-1 20 and 40 DAS. Yield attributes and yield like number of pods plant-1, number of kernelspod-1, Test weight(g), Pod yield (kg ha-1), Haulm yield (kg ha-1), Harvest index were significantly higher with T6; Oxyfluorfen (23.5%) at 100g ha-1 (PE) fb hand weeding (40 DAS). |