The black-spotted leaf roller moth is a serious pest that affects fruit crops. The larvae of this moth bore into the core of the fruit, feeding directly on the flesh and seeds—this infestation is commonly referred to as "heartworm." In severe infestations, more than 80% of the fruits can be damaged, resulting in premature fruit drop or a significant loss in food quality and market value.
To manage this pest effectively, several control measures can be implemented:
1. **Garden sanitation** is crucial. Regularly remove and destroy fallen or damaged fruits, and ensure the area is kept clean to reduce breeding sites for the moth.
2. **Light trapping** is an effective method to monitor and reduce adult populations. Using black lights at night can attract and trap the moths, helping to lower their numbers.
3. **Insecticide application** should begin early, during the young fruit stage. Recommended treatments include spraying with 90% trichlorfon diluted to 800 times, 40% dichlorvos emulsifiable concentrate diluted to 1000 times, or 20% speed kill diluted to 3000 times. It's important to apply these sprays continuously for optimal results.
By combining cultural practices with chemical controls, farmers can significantly reduce the impact of the black-spotted leaf roller moth and protect their fruit crops from damage. Regular monitoring and timely intervention are key to successful pest management.
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