Scale insects are an important pest on citrus and grapefruit. The common types of scale insects are Korean ball scorpion, Japanese wax mites, Kang's whitefly, pear scorpion, etc., which mainly endanger the leaves and branches of crops. Fruit, today, Huinong.com Xiaobian said that the type of scale insects and integrated control technology, I hope to help everyone. [Types of scales and control measures] First, the North Korean ball 蚧 1. Hazard Mainly harming plums, apricots, peaches, cherries, apples, etc., by gathering on the host branches, the host juice is absorbed for the rest of the life, the damaged trees are poorly grown, the severely damaged branches are dead, and even the whole plant is dead. 2, prevention The key period of wintering prevention and control is the mid-March of the nymphal shelling activity and the mid-May of the nymphal hatching period. At this time, there is no covering on the back of the worm body, and the medicament can exert a better effect. Second, the Japanese wax enamel 1. Hazard Mainly harming jujube trees, nymphs and female adults gather on branches and leaves to suck juice, their secretions can induce coal pollution, affecting photosynthesis, when serious, causing tree weakness, atrophy of leaves, yield and quality decline. 2, prevention The key period of prevention and control is before the female adult hatch, that is, in late May and early July in the nymph. Third, Kang's whitefly 1. Hazard It mainly harms apples, peaches, grapes, etc., and the buds of young plants, shoots, leaves, fruits and roots of host plants are sucked by adults and nymphs. After the shoots are killed, they often swell, and the bark is split and die, and the early damage is deformity. 2, prevention The key period of prevention and control is the germination of pear trees during the hatching period of wintering eggs and the peak period of each generation of nymphs, namely, mid-to-late May, late July and late August. Fourth, pear round 1. Hazard Mainly harm to pears, apples, peaches, grapes, etc., after the branches are damaged, causing cortical wood plugging and phloem duct tissue decline, cortical burst, inhibit growth, causing leaves, even branches dry and whole plant death. 2, prevention During the critical period of prevention and control, the wintering insects began to feed, that is, in the middle and late March and the wintering nymphs, that is, in mid-June. V. Sang Dun 1. Hazard It mainly harms apples, pears, peaches, etc., and the surface of the damaged branches is uneven, weakening the tree potential, and even causing the death of branches or whole plants. 2, prevention During the critical period of prevention and control, females began to feed, that is, in the middle and late March and the end of the hatching period of each generation, that is, late May and early August. Six, grass 蚧 1. Hazard It mainly harms apples, pears, peaches, etc., and the grass stalks are collected on the shoots, causing the buds to wither, the tree is weak, and the yield is reduced. 2, prevention During the critical period of prevention and control, the nymphs are in the midst of mid-March. ã€Scarf Integrated Control Technology】 1. Strengthen the management of orchard, timely fertilize and irrigate the water, meet the needs of fruit trees for water and fertilizer, and improve the insect resistance of fruit trees. 2, combined with plastic trim, burned with insect branches. 3, grasp the two weak links in the life activities of the scale insects, take physical and mechanical methods, can play a multi-functional effect. 4, in the dormant period of the fruit tree sprayed silk or 3 ~ 5.5 degrees stone sulfur mixture, has better control effect on the scale insects. 5. In the growth period of fruit trees, two key prevention and treatment periods should be seized: a. The nymphs of the early age larvae or the adult adults before the spawning, the usual poisonous drugs. b. In the peak period of egg hatching, use low-toxic selective insecticides for prevention and treatment, that is, Qianxiang and Baidou phosphorus. Dental Light Curing Lamp,Dental Light Cure,Dental Led Curing Light,Dental Optical Fiber Guide Stick Foshan Ja Suo Medical Device Co., LTD , https://www.jasuodental.com
