Studies on integration of tillage and herbicides for weed control in sugarcane

摘要

Field experiments were conducted at Sugarcane Research Station, Cuddalore, Tamil Nadu during 1995-96 and 1996-97, to integrate tillage and herbicides to control weeds with special reference to Cyperns rotundas in sugarcane. The results revealed thatthe preplant application of glyphosate @ 2 kg ha~(-1) (with 2 percent ammonium sulphate)plus three disc harrowings followed by pre-emergence application of atrazine 1 kg or alachlor 1.5 kg ha~(-1) + hand weeding at 60 DAP recorded 92 percent weed controlefficiency and increased the cane population (50 percent), cane yield (91 percent) and sugar yield (86.6 percent) over farmers method of three disc harrowings and hand weeding twice at 30 and 60 DAP.