The leafhoppers that damage kenaf and jute include Tetranychus cinnabarinus Boisduval, Polyphagotarsonemus latus (Banks), and Oligonychus coffeae (Nietner). Distribution of China's Yellow River, Huaihe River area Zhuju leaflets are mostly; in the Yangtze River basin and its southern area, in addition to cinnabar leafhoppers, there are more sideways oysters, part of the hemp area is also more serious coffee claws.
Hosts kenaf, jute, cotton, beans, vegetables, etc.
The characteristics of the damage to the worm, if Ruan puncture kenaf, jute leaves or stalk sap, caused damage yellow leaves curling, loss, damage to heavy fiber production by about 20%.
Morphological characteristics of cinnabar leafhoppers see the book cotton pests. Side of the restaurant line to see the book tea insect pests a tea-yellow glutinous rice dumplings.
Living habits The cinnabar leafhoppers in the Yangtze River basin area and more than 20 years of feeding lines on the side of the Yangtze River have overlapping generations. When the temperature is high, it takes 4-8 days to complete the generation, and the conditions are appropriate. In the short term, the group can be formed. When the average daily temperature is lower than 10°C, the female adult cicadas cluster in the dead leaves in the sunny place or in the rhizosphere of the weeds, as well as in the clumps and bark seams for wintering. In mid-March of the following year, the temperature was higher than 10°C, and the overwintering larvae began to infest. They first breed on the wintering host for 1-2 generations, and then they migrated to Ma Tian after unearthing. There is no significant diapause in winter in the South China Ma District. The temperature of 25-30 °C, drought and rain to take place. There are many weeds in Maeda, and it is prone to legumes, and Maeda, which is poor in growth, is prone to occur. It is close to ditches, roads, villages, and cotton fields. Natural enemies include meat crickets, grasshoppers and florets.
Prevention and control methods (1) After harvest in Ma Tian, ​​the litters were removed timely, and burned to reduce the source of insects. (2) Spray 20% acaricidal ester wettable powder 1000 times solution or 20% amitraz cream 1000 to 1500 times, and 5% thiazolyl ketone emulsion 2000 times.
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