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Control Methods and Technical Key Points for the Jujube Mealybug on Jujube Trees

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(1) Manual and physical control. Bark scraping: During winter and early spring, scrape off the old coarse bark on the trunk, branches and forks and burn it in a centralized manner; spray the whole tree with 3-5 degrees Baume lime sulfur mixture, or apply a sticky insect glue ring about 1-2 cm wide on the main trunk and branches, to prevent the insects from climbing up the tree and from moving from concentrated overwintering branches to non-concentrated overwintering branches to cause damage, and to trap and kill some of the pests. (2) Chemical control. The application time should be chosen during the peak hatching period of the newly hatched nymphs, generally from late May to early June, early to mid-July, and early September. The selected pesticides include: 25% buprofezin

(1) Manual and physical control. Bark scraping: During winter and early spring, scrape off the old coarse bark on the trunk, branches and forks and burn it in a centralized manner; spray the whole tree with 3-5 degrees Baume lime sulfur mixture, or apply a sticky insect glue ring about 1-2 cm wide on the main trunk and branches, to prevent the insects from climbing up the tree and from moving from concentrated overwintering branches to non-concentrated overwintering branches to cause damage, and to trap and kill some of the pests.

(2) Chemical control. The application time should be chosen during the peak hatching period of the newly hatched nymphs, generally from late May to early June, early to mid-July, and early September. The selected pesticides include: 25% buprofezin wettable powder at 1500-2000 times dilution (apply 2 days in advance), neem oil crude oil emulsifiable concentrate at 200 times dilution, 80% dichlorvos emulsifiable concentrate at 1000-1500 times dilution, 30% acephate emulsifiable concentrate at 500 times dilution; in early to mid-July, 25% quinalphos emulsifiable concentrate at 1000-1500 times dilution and other pesticides can be used for control. To enhance the contact-killing effect, pyrethroid insecticides such as 2.5% kung fu emulsifiable concentrate at 1500-2000 times dilution or 10% solution or 10% tianwangxing emulsifiable concentrate at 2000-4000 times dilution can be mixed in.

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