Depatmerit of Agronomy, Punjab Agricultural University, Ludhiana-141 004
A field experiment was conducted for four years during 1986-87 to 1989-90 to find out effective dose and time of application of atrazine for weed control in transplanted winter maize. Atrazine (0.25 and 0.5 kg/ha) applied 0, 1, 2,3 or 4 weeks after transplanting gave complete control of grassy and broad-leaf weeds. Application of herbicide at 5 weeks after transplanting allowed some weed growth. Atrazine application at transplanting or upto 5 weeks after transplanting produced grain yield at par with two hand weeding. Grain yield did not differ significantly due to doses and timing of application of atrazine.
