A field experiment was conducted during Kharif (rainy season), 2019 at S.V. Agricultural College, Tirupati, Andhra Pradesh to find out the best chemical weed management practice for blackgram. Results revealed that pre-emergence application of diclosulam 20 g/ha supplemented with HW at 30 DAS resulted in lower density and dry weight of weeds with higher weed control efficiency, and it was closely followed by pre-emergence application of pendimethalin + imazethapyr 1000 g/ha supplemented with HW at 30 DAS. Heavy weed infestation of weeds in unweeded check reduced the seed yield by 58.4% compared to pre-emergence application of pendimethalin + imazethapyr 1000 g/ha supplemented with HW. All the pre-and post-emergence herbicides did not show inhibitory effect on succeeding fodder sorghum.