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The present investigation was conducted at Instructional Farm of Indira Gandhi Krishi Vishwavidyalaya, Raipur (C.G.) India during the kharif season (June-October) 2006. The experiment was laid out in randomized block design comprised of eight treatments of various combinations of different herbicides viz. T1:PIH 2023 10% SC 15 g a.i/ha at 18 DAS; T2 : PIH 2023 10% SC 20 g a.i/ha at 18 DAS; T3 : PIH 2023 10% SC 25 g a.i/ha at 18 DAS; T4 : PIH 2023 10% SC 30 g a.i/ha at18 DAS; T5 : PIH 202310% SC 60 g a.i/ha at 18 DAS T6 : Almix 20% WP 4 g a.i/ha 18 DAS; T7 :Control (unweeded check) and T8 : Hand weeding at 30 DAS with three replications. Rice cultivar “IR-64” was grown as a test crop. The growth performance of Rice i.e. plant height, Number of tillers(m-2), Number of effective tillers(m-2), dry matter accumulation plant-1, was higher under PIH 2023 10% SC 25 g a.i/ha as compared to other weed management practices. Wher as the minimum growth of rice recorded under unweeded. Maximum grain yield and straw yield was under PIH 2023 10% SC 60 g a.i/ha Echinochloa colona, Cyperus spp., F. miliaceae, L. hyssopifolia were the pre-dominant weeds in experimental plot. Minimum weed density was noted under post emergence application of Almix 4 g ha-1 and PIH 2023 25 g ha-1 at 20, 40, 70 and 90 DAS. Whereas, at harvest lower dry matter of weeds and highest weed control efficiency was recorded under Almix 4 g ha-1 (T6), PIH 2023 25 g ha-1 and PIH 2023 60 g ha-1, respectively. It was found effective to control broad spectrum of weeds viz., grasses, sedges and forbs.

international journal of chemical studies

Effect of integrated weed management practices on growth and yield of Direct Seeded rice under puddle condition of Agro-climatic situation of Chhattisgarh