How to prevent cotton mealworms

Cotton mealybug, also known as whitefly, sweetpot mealybug, is commonly known as “white moth”. In recent years, with the promotion of planting of insect-resistant cotton in large areas, the amount of cotton fields has been greatly reduced, and cotton mealworms have become increasingly serious.

The whitefly can occur 11-15 generations a year, with eggs, nymphs, and adults overwintering in the protected areas. In mid-May to early June, damage occurs in the cotton fields. From mid-August to late September, the peak period of damage is reached. With adult or nymphs gathered on the back of cotton leaves, sucking cotton sap, when the density of wormholes is large, yellow patches appear on the front of cotton leaves, causing a large number of beebells to fall off; in the meantime, adults or nymphs also secrete honeydew to make cotton. Leaves and bells are blackened and the fiber quality is reduced.

Prevention of cotton mealybugs has the following methods: trapping. Cotton mealybugs have a strong tendency to yellow and can be trapped using yellow plates. The specific approach is to use a yellow material made of appropriate size of the yellow plate, inserted in the field side, slightly higher than the cotton, apply oil on the board, usually 7 to 10 days once, can greatly reduce the cotton field population density. Drug kill. Can be mastered in the upper, middle and lower leaves of cotton, the average single leaf nymph reaches 16-20, 10% imidacloprid 1500-2000 times, 1.8% avermectin 1000-1500 times, 25% oxacillin 1000 ~1500 times liquid or 25% cotton insects 1500 times liquid spray.

In addition, there are many species of natural enemies of cottonflies, and currently 114 species of predatory natural enemies and 45 species of parasitic natural enemies have been found. Protection and utilization should be paid attention to; timely removal of weeds inside and outside the cotton fields; no cotton cultivars, or zucchini or wax gourd , pumpkins and other vegetables; timely pruning, removal of the bottom of the invalid leaves of cotton, and the waste branches and leaves covered with pests buried deep outside the field or burned.

Sweet Potato Leaf Juice Vermicelli Bag

Sweet Potato Leaf Juice Vermicelli Bag

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