Grasshopper control methods
Grasshoppers are mainly larvae and their control methods are as follows:
1 Implement autumn deep-seated winter irrigation, fine soil preparation, and reduce the population density of overwintering larvae in the field.
2 Remove weeds and reduce the amount of eggs that fall from the field
3 Install frequency-type insecticidal lamp or black light lamp to seduce grasshopper adult.
4 Chemical control: Before the grasshopper is 2 to 3 years old, it should be sprayed with Bt WP 500-700 times or 25% diflubenzuron 1500-2000 times. When the amount is large, 4.5% high efficiency cypermethrin 1500-2000 times or 2.5% cyfluthrin EC may be sprayed 2000-2500 times.
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