A replicated field experiment was conducted during 2016 and 2017 for selecting suitable herbicide for weed management in rainfed blackgram at Krishi Vigyan Kendra Farm, Ashokenagar, West Bengal, India. Among the herbicides tested, pre-emergence application (PE) of pendimethalin 1.0 kg/ha fb post-emergence application (PoE) quizalofop-ethyl 50 g/ha 25 days after seeding (DAS) resulted in lower weed density and higher weed control efficiency (92.10%) with an average seed yield of 0.82 t/ha, which was 48.35% grain yield over the control. Pendimethalin (PE) 1.0 kg/ha fb quizalofop-ethyl 50 g/ha (PoE) could be used for effective and economic weed control in blackgram in rainfed conditions.