Vol. 11, Special Issue 8 (2022)

Author(s):
Shilurenla, D Nongmaithem, AP Singh and Rekha Yadav

Abstract:
A field experiment was conducted in the experimental research farm of School of Agricultural Sciences and Rural Development (SASRD), Nagaland University during the summer period of 2021 to study the “Effect of Integrated Weed Management in summer green gram (Vigna radiata)”. The experimental design was randomized block design (RBD) with three replications. The treatment consists of T₁: Weedy check, T₂: Hand weeding at 20 DAS and 40 DAS, T₃: Rice straw mulching @5 t/ha^-1, T₄: Pendimethalin @ 0.75 kg/ha^-1 (PE) fb Hand weeding at 20 DAS, T₅: Pendimethalin @0.75 kg/ha^-1 (PE) fb Rice straw mulching @5 t/ha^-1, T₆: Pendimethalin @0.75 kg/ha^-1 (PE) fb Quizalofop p-ethyl @ 0.15 kg/ha^-1 (PoE) at 30 DAS, T₇: Imazethapyr @ 0.5 kg/ha^-1 (EPoE) at 15 DAS fb Quizalofop p-ethyl @0.15 kg/ha^-1 (PoE) at 30 DAS. The result revealed that hand weeding at 20 DAS and 40 DAS gave the highest growth and yield of green gram (627.81 kg/ha^-1) which was found to be at par with pendimethalin @ 0.75 kg/ha^-1 (PE) fb Hand weeding at 20 DAS (614.64 kg/ha^-1). Among the weed management practices, hand weeding at 20 DAS and 40 DAS gave minimum weed population, weed dry weight accumulation there by, giving the highest weed control efficiency and recorded highest growth and yield in green gram followed by pendimethalin @ 0.75 kg ha ̵ ¹(PE) fb Hand weeding at 20 DAS recorded the highest growth and yield parameters. Pendimethalin @ 0.75 kg ha^-¹ (PE) fb Hand weeding at 20 DAS gave the highest B:C ratio (1.59) and was found to be economically best feasible treatment for summer green gram.