How to control annual broadleaf weeds in wheat? Dicamba targets the critical timing of annual broadleaf weed emergence.

Annual broadleaf weeds in wheat fields compete with the crop for water, nutrients, and light, and severely infested fields show significant yield reductions. Herbicide selection for controlling these weeds should be based on the target weed species and precise growth stage—dicamba 480 g/L aqueous solution (AS) is registered for the control of annual broadleaf weeds in wheat fields.

For annual weeds in wheat 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 treatments, targeted spraying should be conducted when weeds are at the 3–5 leaf stage and when the crop is relatively safe.

Dicamba 480 g/L SL (soluble concentrate), Registration No. PD20150786 (subject to the actual label). Used for the control of annual broadleaf weeds in wheat fields, at a rate of 25–30 mL per mu, applied by foliar spray. Dilute with water according to the weed spectrum and crop growth stage, and spray uniformly. 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.