How to manage weeds on forest firebreaks? Apply targeted treatment by seizing the critical timing of weed growth.

Weeds in forest firebreak fields compete with crops for water, nutrients, and light, and fields with severe weed infestations show significant yield reductions. Herbicide selection for weed control must be based on the weed species present and their precise growth stage—static application of 25% hexazinone soluble concentrate is registered for weed control in forest firebreak fields.

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

Apply 25% Hexazinone Soluble Concentrate (SL) by directed application, Registration No. PD20070384 (subject to the actual label). For weed control on forest firebreak trails, apply at 334–500 mL per mu (667 m²) via foliar spray. Dilute with water according to the weed spectrum and crop growth stage, and spray evenly. Take care to prevent spray drift onto crops.

For stem and leaf herbicide application, lower the nozzle and spray only the weeds, avoiding herbicide drift onto crop plants to prevent injury. Do not spray on windy days or before rain. Dosage varies significantly among different formulations; conduct small-scale trials first before large-scale application. Always follow the label instructions.