Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore - 641003, India.
Maize, groundnut and maize based sequential cropping systems consisted of wide range of weed flora of the groups viz., grasses, sedges and broad leaved weeds. Except Cyperus rotundus, Cynodon dactylon, majority of weed species differ widely due to soil type, season and cropping system. Both maize and groundnut should be free from weeds up to 60 days after sowing. Due to crop weed competition, yield loss ranging from 40 to 80 per cent in maize and 80 to 90 per cent in groundnut. Research on weed management practices followed in maize realize that integrated weed management practices offer not only good weed control but also higher net rebms and B:C ratio. Several reseach findings also indicate that atrazine or pendirnethaiin application at recommended doses in maize did not leave any residues to affect succeeding crops bite chickpea, cowpea, groundnut, Indian mustard, wheat, linseed and lentil.
