Methods for Weed Control in Codonopsis pilosula and Key Technical Points
For fields where annual grass weeds such as barnyardgrass, crabgrass, foxtail, and giant foxtail are the main weeds, use herbicides such as napropamide (sethoxydim), quizalofop-p-ethyl, and fluazifop-p-butyl. ①2% sethoxydim emulsifiable concentrate at 75-100 g per 667 sq m. ②5% quizalofop-p-ethyl emulsifiable concentrate at 75-100 g. ③15% fluazifop-p-butyl emulsifiable concentrate at 75-100 g. Dilute the application rate in 15-20 kg of clean water and spray the stems and leaves of the weeds. Choose a sunny, windless day between 9-11 a.m. or after 4 p.m.
For fields where annual grass weeds such as barnyardgrass, crabgrass, foxtail, and giant foxtail are the main weeds, use herbicides such as sethoxydim, quizalofop-p-ethyl, and fluazifop-p-butyl.
①2% sethoxydim emulsifiable concentrate at 75-100 g per 667 sq m.
②5% quizalofop-p-ethyl emulsifiable concentrate at 75-100 g.
③15% fluazifop-p-butyl emulsifiable concentrate at 75-100 g. Dilute the application rate in 15-20 kg of clean water and spray the stems and leaves of the weeds. Carry out the treatment on a sunny, windless day between 9-11 a.m. or after 4 p.m. Note that the herbicide must not be sprayed onto grass crops such as corn and sorghum.