Effect of herbicides on weed infestation, productivity of groundnut and their residual effect on sunflower

Abstract

Presently very few herbicides are available for groundnut cultivation, so field experiment was conductedto assess the efficacy of pre emeregent herbicide Diclosulam 84 % WDG on groundnut. Among the threelevels higher dose of diclosulam 84% WDG @ 26 g ai/ha found effective in controlling the weeds, whichrecorded lower weed density and weed dry weight compared to lower levels of diclosulam, Pendimethalin and oxyfluorfen. Diclosulam 84% WDG @ 26 g ai/ha recorded higher weed control efficiency (95.34%) andnumber of pods per plant (27), pod dry weight per plant (15.15 g) and pod yield (2470 kg/ha) compared tolower levels of diclosulam and other herbicides. Herbicide residual effect was studied on sunflower in thesame plot, there was no effect of diclosulam 84% WDG @ 26 g ai/ha on germination, yield parameters andyield of sunflower.