Control of weeds in canola gobhi sarson cultivars and their tolerance to herbicides

A field study was carried out at the Punjab Agricultural University, Ludhiana for two seasons to study the weed control in three canola gobhi sarson cutlivars and tolerance of these cultivars to different herbicides. Three canola gobhi sarson cultivars ‘GSC 5’, ‘GSC 6’ and ‘Hyola PAC 401 in main plots and five weed control treatments -fluchloralin at 0.75 and 1.5 kg and trifluralin at 0.75 and 1.5 kg/ha and hand weedings in sub-plots were evaluated in a split plot design. Fluchloralin and trifluralin at 0.75 and 1.5 kg/ha recorded effective control of annual weeds and recorded canola seed yield similar to hand weeded control. All the three cultivars of canola gobhi sarson tolerated both the herbicides at 0.75 and 1.5 kg/ha. The study indicated that fluchloralin and trifluralin could safely be used to control weeds in canola gobhi sarson cultivars ‘GSC 5’, ‘GSC 6’ and ‘Hyola PAC 401.