MySheen

Onion thrips

Published: 2024-11-05 Author: mysheen
Last Updated: 2024/11/05, The main damage characteristics are green onions, onions, water onions, chives, garlic and other lily vegetables, as well as tobacco, cotton and so on. Adults and nymphs use sucking mouthparts to harm the heart leaves and buds of the host plant, making the host leaves form many long yellow-white or gray-white markings, and the leaves are distorted. The morphological characteristics of the adult are 1.2ml 1.4 mm in length, yellowish brown and wings yellowish white. The life habit of onion thrips occurs for 10 generations a year in North China, and the damage is the most serious from April to May. Adults are very active and can spread by the wind and feed sooner or later or on cloudy days.

The main damage characteristics are green onions, onions, water onions, chives, garlic and other lily vegetables, as well as tobacco, cotton and so on. Adults and nymphs use sucking mouthparts to harm the heart leaves and buds of the host plant, making the host leaves form many long yellow-white or gray-white markings, and the leaves are distorted.

The morphological characteristics of the adult are 1.2ml 1.4 mm in length, yellowish brown and wings yellowish white.

The life habit of onion thrips occurs for 10 generations a year in North China, and the damage is the most serious from April to May. Adults are very active and can spread by the wind and feed strongly sooner or later or on cloudy days. When the temperature is about 25 ℃ and the relative humidity is below 60%, onion thrips are easy to occur. Storms can reduce the number of storms.

Control methods (1) remove weeds and fallen leaves of residual plants in the field, burn them centrally or bury them deeply, and eliminate overwintering insects. (2) strengthen the management of fertilizer and water to promote the healthy growth of plants. (3) Pesticide control. Choose 1000 times of 80% dichlorvos EC, or 1000 times of 25% synergistic quinathion EC, or 1000 times of 50% phoxim EC, or 20% cypermethrin 3000m 4000 times, or 4.5% cypermethrin 3000m 3500 times, etc.

 
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