How to control annual broadleaf weeds in rapeseed? Benazolin-ethyl should target the critical timing of annual broadleaf weed emergence.

Annual broadleaf weeds in rapeseed fields compete with the crop for water, nutrients, and light, and severely infested fields show significant yield losses. Herbicide selection should be based on the target annual broadleaf weed species, with precise timing aligned to the weed growth stage—Benazolin 30% SC is registered for the control of annual broadleaf weeds in rapeseed fields.

For annual weeds in rapeseed fields, different herbicides are required for grasses versus broadleaf weeds, and the application methods also differ between pre-emergence and post-emergence treatments. For soil residual (pre-emergence) control, herbicides should be applied after sowing but before crop emergence, forming a herbicide film over the soil surface. For post-emergence foliar treatment, targeted spraying should be conducted when weeds reach the 3–5 leaf stage and when the crop is relatively safe.

Benazolin 30% Benazolin Suspension Concentrate, Registration No. PD20084194 (subject to the actual label). Used for the control of annual broadleaf weeds in rapeseed fields at a rate of 50–67 mL per mu, applied as foliar spray. Dilute with water according to the weed spectrum and crop growth stage, and spray evenly. Take care to avoid spray drift onto the crop.

For stem and leaf herbicide application, lower the nozzle and spray only the weeds to prevent spray drift from reaching the crop and causing injury; do not spray on windy days or before rainfall. Dosage rates vary considerably among different formulations—conduct small-scale trials first before large-scale application. Always follow the label instructions.