How can wolfberry gall mites be controlled and completely killed?
Wolfberry gall mite, also known as big gall mite, is a common pest that harms the leaves, flower buds, young fruit, tender stems, petals and flower stalks of wolfberry. So how do you kill wolfberry gall mites? How to prevent them?
How to kill wolfberry gall mites?
You can directly spray 50% Shamandan suspension concentrate at 600 times, Baiman Kuaisha at 1000 times, or 1.8% abamectin at 3000-4000 times onto the affected plants. For large areas, you can also use ultra-low-volume spraying with a 1:1 mixture of 50% dipropyl oil mist agent and diesel.
How to prevent wolfberry gall mites?
1. Seed selection and seedling raising
Use high-yielding, stress-resistant varieties for cutting propagation. Select healthy, pest-free branches, soak them in 1.8% abamectin at 3000-4000 times, and then carry out the cuttings. Seedlings transferred from other places must undergo strict quarantine to reduce the risk of long-distance spread.
2. Field management
Strengthen fertilizer and water management, and do a good job of topdressing during the bud break, flowering and fruit swelling stages. Follow the principle of thorough irrigation in summer and good irrigation in winter, irrigate in time, and maintain appropriate humidity to strengthen the trees and improve the stress resistance of the plants. Combined with pruning and branch training, promptly remove and destroy diseased and damaged leaves. Spring pruning should be completed before March 20 to avoid migration to newly growing branches and leaves. In summer, combined with clearing the orchard, remove excessive vegetative branches and root suckers to prevent the breeding and spread of gall mites.
3. Natural enemy control
The natural enemies of gall mites include the seven-spot ladybird and Phytoseiulus persimilis. When using Phytoseiulus persimilis in open fields, release adults at the early stage of pest mite occurrence at a ratio of 1:10-20, and if necessary, release once more. The suitable predator-prey ratio should be determined according to the density of pest mites in the field. In plots where Phytoseiulus persimilis is released, chemical insecticides such as omethoate should not be applied to prevent killing the natural enemies.