1. Implement scientific management in cotton fields to ensure proper pruning and chemical control. Overgrowth of cotton plants can lead to dense shading, which creates an ideal environment for the occurrence of locust outbreaks. To prevent this, it's important to manage plant density effectively. For "long cotton" or weak branches, it's advisable to keep the stronger ones and leave 1-2 fruit branches to promote healthy growth and better air circulation.
2. Chemical control is essential as blind miracidians are highly mobile and have a long reproductive period with overlapping generations. Early intervention is crucial. Once cotton plants reach the bud stage, inspect 100 plants for nymphs. If 3-5 nymphs are found, treat them immediately by applying dimethoate to the stems or the growing tips of the plants. This method not only helps in controlling the locusts but also minimizes harm to natural predators. During the adult stage, spraying with 3% or 10% imidacloprid can be effective. It's best to apply these treatments in the early morning or late evening when the pests are more active. Repeat the process every 5-7 days for optimal results. To maximize effectiveness, it's recommended to coordinate treatments across adjacent cotton fields, ensuring a unified timing for control efforts. This approach enhances overall pest management and reduces the chances of reinfestation.
By following these integrated strategies, farmers can maintain healthier cotton crops while minimizing environmental impact. Proper monitoring, timely interventions, and coordinated efforts are key to successful pest management in cotton fields.
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