Efficacy of post-emergence herbicides in Rabi Blackgram (Vigna mungo L.)

Field experiment was conducted at Agricultural Research Station, Jangamaheswarapuram, Guntur Dist. Andhra Pradesh, India to evolve efficient and economic weed management practices for irrigated Blackgram during Rabi 2017-18 and 2018-19. The results revealed that all growth and yield characters of Blackgram were significantly affected by distinct weed control practices. A similar trend was also observed in weed parameters. Post-emergence application of Sodium Acifluorfen + clodinafop-propargyl @ 300 g a.i ha-1 at 20 DAS effectively reduced weed density and dry matter production. Consequently, higher seed yields of 1180 and 998 kg/ha, highest net returns of Rs. 43,227 and Rs. 32,915/ha and return per rupee investment of 1.99 and 1.50 during 2017-18 and 2018-19, respectively were recorded.