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In many regions, Spodoptera litura and Spodoptera litura have developed strong resistance to pyrethroids, organophosphorus pesticides, and the use of these drugs has been poorly controlled. Proper use of chlorantraniliprole, flubenapram, spinetoram, indoxacarb, metaflumizone, tebufenozide, chlorfenapyr, abamectin, emamectin Benzoic acid salts and other drugs have good control effects against the moth pests and can be selected according to local conditions. Pay attention to alternate medications to delay pest resistance. Flubenzamide, indoxacarb, spinetoram, and chlorantraniliprole also have better control effects on older larvae. These drugs and their avermectins may be preferred for plots with large worm age and severe victimization. A mixture of Emamectin benzoate. The 10% rice avermectin affluoxamide suspension is a mixture of flubenapren and avermectin, which can be used to control older Spodoptera litura. The larvae of these two pests have nocturnal characteristics and should be applied in the evening. In addition to uniform spraying on the plants, the ground near the roots of the plants must also be sprayed to prevent larvae that fall to the ground from leaking. To improve the control effect. In addition, adults in the peak period in the field suspended attractants and traps to trap adult insects, artificial removal of egg masses, can also significantly reduce the degree of hazards in the field.
High-temperature drought moth insects occur heavy
The Spodoptera exigua, Spodoptera lepidoptera, Lepidoptera noctuidae pests, often mixed, its host range is wide, larvae overlapping generations, nocturnal night out, older larvae resistant, difficult to control. The conditions of continuous high temperature and drought since July have contributed to the occurrence of these two pests. The newly hatched larvae of the two pests were fed near the egg mass, began to disperse after 3rd instar, and entered the gluttony phase after 4th instar. Prevention and control of these two pests should be used during the peak period of young instar larvae without dispersion hazards. Missing the appropriate period of control, field pests overlapping in generations, adults, older larvae, young instar larvae and eggs exist at the same time, more difficult to treat. As the egg masses continue to hatch, there will be more and more field larvae.