Still plants and weeds can be removed to reduce the hiding places of this insect. If it is found that it has been infested by pests, it should be removed and destroyed in time. Biological control can be used: microbial agents can be sprayed, or natural enemies can be released. It is known that lacewings can effectively kill Spodoptera litura larvae.
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Insecticide can use 10 times the 1500 times liquid of the (fennitrile) suspension, or 0.8 square meters 1,500-fold solution of Methylaminoavermectin EC, or 4,000-fold liquid of 15-dozen suspensions, or 800-fold solution of 5-Methylamine (Difenturon) EC, or 1,200-fold solution of 2.5 Caixi (Spinosad) suspension times of liquid, or 800 to 1000 times of 48 chlorpyrifos EC, 2000 times of 2.5 Uranus (bifenthrin) EC, or 2000 times of 5 Taibao (fluridonil) EC for control, the control effect can reach more than 90% .
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In order to delay the insecticide resistance, attention should be paid to the alternate use of different pesticides, less use of pyrethroids, and low-volume spraying, except on the plants. In addition to applying the pesticide evenly, the ground near the rhizosphere of the plant should be sprayed thoroughly at the same time to prevent larvae from rolling to the ground.
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Use pheromones to monitor and trap male insects to reduce the population density in the field and control the timing of pesticide application. Detecting field density can provide a reference for the best control period. According to the survey, when the number of sexual pheromone trapping insects reaches its peak, the production peak will appear in the field within 1 to 2 days, and newly hatched larvae will appear in 2 to 4 days. At this time, pesticides should be used for control.
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5
It can achieve a very high prevention and control effect. In the adult stage, sexual pheromones are used to trap and kill males and reduce the population density in the field. Set up 2 to 3 traps per hectare, and update the attractants once a month. The hanging position is recommended to be 50 to 60 centimeters above the growing point of the crop.
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6
Spodoptera litura larvae lie dormant during the day and emerge at night, so try to spray in the evening or early morning
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