How to control weeds in groundnut (mungphali)?

Groundnut (mungphali) needs clean early weed control because it is a spreading crop and the critical period is the first 6 to 7 weeks, after which the pegs go into the soil and late weeding or hoeing can damage them and cut yield. A good plan is a pre-emergence herbicide such as pendimethalin within 1 to 3 days of sowing on a moist field to stop the early flush, followed by an early post-emergence grass killer like quizalofop or imazethapyr (where registered for groundnut) at about 15 to 20 days for escapes. One light inter-cultivation or hand weeding early, before pegging starts, cleans the rest, but stop disturbing the soil once pegging begins so you do not damage the pegs and developing pods. A dense, even stand competes well. Use only herbicides registered for groundnut, follow the label dose and timing, and confirm with your KVK, because the wrong herbicide can damage the crop and timing around pegging is important.