MySheen

Control methods of jujube gall midge

Published: 2024-11-05 Author: mysheen
Last Updated: 2024/11/05, Due to the small size of each insect, chemical control is generally applied as follows: (1) ground control: before overwintering superior adults are about to sprout (about mid-April), 2.5% trichlorfon powder is sprayed on the ground under the crown, or 25% phoxim capsule 200mm 300 times solution (covered with fine soil or light hoe soil mixing), or 4% acephate powder Or 4% dibromophosphorus powder can be sprayed on the ground when the nursery ground is in between rows.

Due to the small size of each insect, it is difficult for manual control. Chemical control is generally applied, and the methods are as follows:

(1) ground control: when jujube buds are about to sprout (about mid-April), 2.5% trichlorfon powder or 25% phoxim capsule 200mm 300 times solution (fine soil cover or light hoe soil mixing) are sprayed under the canopy before the emergence of overwintering adults. Or 4% acephate powder, or 4% dibromophoe powder can be sprayed on the ground when the nursery ground is between rows.

(2) medication on trees: spraying on trees during the occurrence of larvae in late April, the medicament can be selected as follows: 80% dichlorvos EC 800 times, 30% acephate 600 times 800 times, 50% dibromophos EC 600 times 800 times, 20% cypermethrin EC 2000 times. The medicine was used once every 10 days for a total of 2 times and 3 times. Attention should be paid to the reduction of drug concentration after leaf spreading or after June in order to prevent drug damage. The winter jujube tree and nearby sour jujube seedlings should be treated together.

 
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