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Control of tea false-eyed small green leafhopper

Published: 2024-11-05 Author: mysheen
Last Updated: 2024/11/05, Tea false-eyed small green leafhopper alias false-eyed small green floating dust, small green leafhopper and so on, is one of the most important insect pests of tea in Fujian Province. The adult and nymph were mainly used to suck the juice of the tender shoot of the tea tree, and the female adult laid eggs in the stem of the tender shoot, which hindered the growth of the tea tree, curled and hardened the leaves of the damaged buds, and scorched the leaf tip and leaf edge, which affected the yield and quality of tea. The insect occurs for many generations a year in Fujian Province, and the generations overlap. It occurs 12-13 generations a year in low mountain tea areas, and the damage peak period is from May to June and September to October.

Tea false-eyed small green leafhopper alias false-eyed small green floating dust, small green leafhopper and so on, is one of the most important insect pests of tea in Fujian Province. The adult and nymph were mainly used to suck the juice of the tender shoot of the tea tree, and the female adult laid eggs in the stem of the tender shoot, which hindered the growth of the tea tree, curled and hardened the leaves of the damaged buds, and scorched the leaf tip and leaf edge, which affected the yield and quality of tea.

The insect has many generations in a year in Fujian Province, 12-13 generations a year in low-mountain tea areas, and 8-9 generations in alpine tea areas in May-June and September-October, with a peak period from July to September. The adults overwintered on tea plants, legumes and weeds and began to move when the air temperature rose to 10 ℃ in spring. When the ten-day average temperature was between 16 and 26 ℃, it was more suitable for its growth and development. Most of the adults lay eggs in the tender stem between the second and third leaves of the new shoots. The worm tends to be tender and likes to inhabit on the back of the bud and tender leaves. The number of 2-leaf 3-leaf worms under the bud is large. After the third instar, the nymphs and adults are active and can run rampant or jump. Based on the analysis of the occurrence and damage characteristics, historical data and weather conditions, it is expected that the tea false-eyed small green leafhopper will occur moderately in Ningde, Fuzhou, Quanzhou and Nanping, and moderate in other cities.

Prevention and control measures:

The main results are as follows: (1) No legume crops should be planted in the tea garden, and weeds should be eradicated in time.

(2) when the tea was picked in time, it was found that the egg on the tender shoot was removed at any time, which could significantly reduce the insect population density.

(3) Pesticide control: pesticides with high efficiency, low toxicity, no residue and no export restriction should be selected. When the amount of louver is more than 6, the whole garden should be sprayed, and those who do not reach the control target can be treated as appropriate. Control agents can choose 2.5% Uranus EC 1000 times, or 10% imidacloprid wettable powder 3000 times 4000 times, or 35% Saidan EC 1000 times, or 25% Aktai water dispersible granules 15000 times spray control.

 
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