Energy Budgeting of Integrated Weed Management in Rabi Groundnut Using New Generation Herbicides

Abstract

during rabi 2020-21. The experiment consisted of ten treatments laid out in randomized block design replicated thrice. The treatments comprised of diclosulam 84% WDG 26 g ha -1 PE fb intercultivation at 20 DAS, imazethapyr 2% EC + pendimethalin 30% EC 960 g ha -1 PE fb intercultivation at 20 DAS, pyroxasulfone 85 % WDG 127.5 g ha -1 PE fb intercultivation at 20 DAS, propaquizafop 2.5% + imazethapyr 3.75% w/w ME 125 g ha -1 PoE fb intercultivation at 40 DAS, imazethapyr 35% + imazamox 35% WG 70 g ha -1 PoE fb intercultivation at 40 DAS, sodium acifluorfen 16.5% EC + clodinafop propargyl 8% EC 250 g ha -1 PoE fb intercultivation at 40 DAS, imazethapyr 10% SL 100 g ha -1 PoE fb intercultivation at 40 DAS, intercultivation (20 and 40 DAS), intercultivation fb hand weeding (20 and 40 DAS) (Weed-free) and unweeded control. Among all the weed management practices, maximum energy input was required for inter cultivation fb hand weeding at 20 and 40 DAS. Highest pod energy output (EOp), total energy output (EOt) and net energy was observed with inter cultivation fb hand weeding at 20 and 40 DAS and was on par with diclosulam 26 g ha -1 PE fb intercultivation at 20 DAS and sodium acifluorfen + clodinafop propargyl at 250 g ha -1 PoE fb intercultivation at 40 DAS. Significantly highest EUE of pods, total output EUE, energy productivity of pods and total output energy productivity was recorded in diclosulam 26 g ha -1 PE fb intercultivation at 20 DAS and this was at par with imazethapyr + pendimethalin 60 g ha -1 PE fb intercultivation at 20 DAS.