Chemical Weed Control Methods and Key Herbicide Application Points for Direct-Seeded Rapeseed

(Agricultural Wealth Network) Based on the weed peak, weed spectrum, and stubble-clearing time of direct-seeded rapeseed, the "one pre-emergence sealing, one post-emergence killing" method is adopted in the chemical control scheme. For fields harvested early, such as where rapeseed is mechanically direct-seeded, some weeds may already have emerged in the field before sowing; 3 days before sowing, apply 500 to 600 milliliters of 10 percent glyphosate or 100 milliliters of 20 percent gramoxone per mu as a foliar spray. For fields harvested late, apply 100 grams of 50 percent napropamide per mu before emergence after sowing for sealing control.