The highest weed control efficiency (45.3%) was recorded in sole maize crop with alachlor at 1.5 kg ha-' supplemented with hand weeding, closely followed by maize+blackgram intercropping with same weed control practice (37.1 %). Intercropping with soybean or blackgram increased the maize grain yield by 18.8 and 16.6% over sole maize crop. Significantly higher maize equivalent was recorded in maize+soybean intercropping with alachlor at 1.5 kg ha-' supplemented with hand weeding (8803 kg ha- I), followed closely by maize+soybean with alachlor alone (8103 kg ha-').