The sargus, also known as the persimmon fruit moth or persimmon moth, is a lepidopteran pest that primarily affects persimmon trees. This insect belongs to the family of moths responsible for damaging fruits, and its larvae are particularly destructive. The first generation of larvae can cause significant harm, leading to the persimmons shrinking, turning from green to brown, and remaining on the tree—commonly referred to as "small black persimmons." To effectively manage this pest, the following scientific control measures are recommended:
In winter, it's essential to remove the rough bark from the tree trunks and branches. By peeling off the old, dead bark and eliminating any debris, you can destroy overwintering larvae. Afterward, all removed materials should be burned in a centralized location to prevent reinfestation.
During mid-June, mid-August, and early September, it's important to promptly collect and remove infested fruits. These should be buried deeply to reduce the risk of second-generation larvae emerging and causing further damage.
Another effective method involves using straw traps. In mid-August, before pruning the tree, place straw bundles on the main branches. This attracts the larvae, which then hide in the straw during the winter. Once the season changes, the straw should be destroyed and burned to eliminate the pests.
For chemical control, spraying 5000-5% deltamethrin or 20% fast killing D at the time of adult emergence in both generations can yield excellent results. Alternatively, using 50% malathion, 50% dichlorvos EC, 50% killer pine, or 40% dimethoate diluted to 1000 times is also highly effective.
Additionally, a natural approach called "herbal medicine Shidi" can be used for smaller persimmon trees. In early August, apply liquid persimmon solution directly to the affected areas using a brush or cotton ball. This method is very effective in eliminating the second-generation larvae without the need for harsh chemicals.
By combining these strategies, farmers can significantly reduce the impact of the persimmon fruit moth and protect their crops more effectively.
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