In recent years, small pests such as whiteflies, thrips, leaf mites, and aphids have become increasingly harmful, and such pests have multiplied rapidly, have a large number, and produce rapid drug resistance. The use of biological predators to control vegetable pests can be a good solution to the problems of pesticide residues and pest resistance caused by excessive medication.
In this issue, we introduce you to the natural enemy of a small vegetable pest: the new small millet mite
The new Small Mites can prey not only on pests such as leaf mites, slender-whiskered mites, tarsal mites and gall mites, but also on aphids, thrips, aphids, jumping insects and other small arthropods.
How is this predator mite used?
1. When the number of pest mites or pests per leaf is within 2, the use of natural enemies, when the density of pest mites is large, a drug should be applied once for prevention and control, and then the natural enemies should be released after an interval of 10-15 days.
2. When the weather is clear and the temperature exceeds 30 °C, it should be released in the evening, and it can be released all day on cloudy or cloudy days.
3. Release 70-100 bags per acre. Generally released once throughout the growing season, such as the use of chemical insecticides to control other insect pests after release, 10-15 days after the drug and then supplement the release of natural enemies.
When released, you can use the hanging bag method or the cast method:
1. Crop in the open field (hanging bag method)
It can be hung on the stem and petiole of the plant to avoid direct sunlight and rain into the bag. Distribute them evenly among the release areas according to the prescribed release amount.
2. Greenhouse crops
When released in a greenhouse, the hanging bag method or the sprinkling method can be selected.
Sprinkling: Spread the new pasteurized mites evenly on the leaves of the plant along with the medium, and do not irrigate for 2 days to facilitate the transfer of predatory mites that fall on the ground to the plant.
What are the precautions?
1, predator mites can not be used at the same time as insecticides and acaricides If it is necessary to control other pests, selective agents should be used under the guidance of plant protection professional and technical personnel.
2, predator mites for biological living organisms, not resistant to storage, recommended timely use If you need storage, it should be placed in a cool, rainproof place at 15-20 ° C, not with pesticides, fertilizers and other harmful substances with storage and transportation.
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