A field expeiment was conducted at Main Agricultural Research Station,University of Agricultural Sciences, Dharwad during summer 2015 tofind out optimum stage of spray and concentration of paraquat fordefoliation of greengram. The experiment was laid out in RandomizedComplete Block Design with factorial concept with 10 treatmentsconsisted of two stages for spraying (65 and 70 DAS) and five levelsof defoliator concentrations (1 ml, 2 ml, 3 ml, 4 ml and 5 ml). Resultsrevealed that paraquat spray @ 5ml l-1 of water at physiologicalmaturity (70 DAS) recorded significantly higher per cent defoliation(94.59%) and dryness of plant (96%) without impairing thegermination percentage of the seed and it was on par with 4ml l-1spray at physiological maturity (70 DAS). Paraquat spray not onlyencouraged defoliation but also reduced total harvest loss and broughtsynchronised harvesting and facilitated the mechanical harvesting.