Now it has entered the outbreak of the second generation of Hyphantria larvae. The insect is miscellaneous, has a large breeding scale, and has strong adaptability. It has a wide range of propagation routes, fast speed, and serious damage. After investigation, some plots of trees have been jeopardized. The leaves of the entire canopy of heavily infested trees have been eaten into a net shape, which has seriously affected the growth of the trees. In order to mitigate the hazards and control the spread of insect pests, the control methods for the second generation of Hyphantria cunea larvae are described below:
1. Shearing prevention and control: When cutting nets, it is not necessary to eliminate insects without breaking the net.
2. Pharmacy control: The applicable medicament for controlling larvae is more extensive, that is, the larvicidal agents commonly used in daily life can be used, such as chlorpyrifos, leptin, pyrethroid insecticides, and the like. The better medicines are: 25% Diflubenzuron 3x Suspension 1000x, this product can cut off the reproduction of pests; 50% kill Pisum Pine 800 times or 4.5% Beta-cypermethrin 2000-3000 times, can be directly Poisoning pests. The spray should be uniform and delicate, and the branches, leaves, and trunks should all be sprayed.
3. Biological control: Bacillus thuringiensis and American white moth virus can be used to control larvae.
4. Natural Enemy Suppression: Release of the natural enemy of the American moth Cyperus japonicus.
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