First, implement the five-character guideline for the prevention and control of leaf blast in cotton fields: "Check, Insert, Pick, Wipe, and Fight." Check: Inspect the affected plants to identify the problem. Insert: Locate the infected cotton plants and mark them for easy identification. Pick: Remove the lower leaves of the cotton plant and take them out of the field for disposal. Wipe: Clean the back of the upper leaves and the underside of the cotton plant to reduce the risk of infestation. Fight: Act quickly to prevent the spread of the disease during its early stages through timely investigation and targeted control measures.
Second, the use of pesticides is essential during the outbreak period. The following insecticides can be applied: 1.8% Abamectin Emulsifiable Concentrate diluted at 3000–4000 times, 2.0% Abamectin Microcapsule Suspension diluted at 4000–6000 times, or 4% Abamectin Emulsifiable Concentrate diluted at 8000–10000 times. Alternatively, 1.8% Avermectin EC can be used at a dilution of 1500–2000 times, or 6% Avigocl at 2000–3000 times. It's important to follow the recommended application rates and safety precautions to ensure effective control while minimizing environmental impact. Regular monitoring and timely intervention are key to managing leaf blast effectively in cotton crops.
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