B:C ratio, Herbicides, Net returns, Pod yield 

The experiment comprised 7 treatments i.e. un weeded control, weed free check, pendimethalin 1.0 kg/ha (PE) + 1 hand weeding at 30 DAS, post emergence quizalofop-ethyl 50 g/ha at 20 DAS, post-emergence imazathypyr 75 g/ha at 20 DAS pre-emergence pendimethalin 1.0 kg/ha + post-emergence quizalofop-ethyl 50 g/ha at 20 DAS and pre emergence pendimethalin 1.0 kg/ha + post emergence imazathypyr 75 g/ha  at 20 DAS. The experiment was set in a randomized-complete block design (RCBD) with 3 replications, in fixed plots and the crop variety ‘JGN-3’ was sown 100 kg/ha during first week of July with spacing of 30 x 10 cm. Application of pendimethalin 1.0 kg/ha + imazathypyr 75 g/ha (750 ml/ha) at 20 DAS gave comparable pod yield (1.21 t/ha) and maximum net returns on per rupee invested. The results confined that the use of pre and post emergence herbicides in combination to groundnut crop is a practically efficient and economically feasible method to control weeds and fetch higher returns.