How woolly aphids control apple woolly aphids by eating fruit trees and fruits in autumn and winter

APHIS gossypii is a quarantine pest of fruit trees. no matter how good the apple is, it cannot be exported. Woolly aphid is a stubborn pest, parasitic on tree trunks, branches and fruit stalks, sucking apple trees and apple juice, weakening fruit trees and killing fruit branches. Because the woolly aphid is protected by cotton-like wrappers, it is difficult to control.

APHIS gossypii

Apple woolly aphid spreads and propagates very fast when it is dry and windy. The flying catkins with woolly aphids can fly up to one or two hundred meters with the wind, from one apple orchard to another, from the tree to the treetops. There are many Rain Water in summer and the climate is humid, which restrains the flying of the woolly aphid and relatively controls the propagation speed of the woolly aphid. In autumn and winter, apple trees shed their leaves one after another, which is suitable for the control of woolly aphids. In the past two years, the occurrence of woolly apple aphid has been emphasized, especially in the old orchard. Prevention and control methods:

1. Spray control. When apples begin to fall leaves, spray the whole garden with 36% Lesbon 700 times liquid, focusing on tree trunks, tree bases, main branches, trunk holes, cracks, and saws. Spray strict spray through, there are flocs to spray wet spray, so that it can not fly. Autumn and winter leaves are sparse, easy to spray strict trunks and branches.

two。 Smear medicament prevention and cure. Before the apple tree germinates in autumn, winter or spring, smear the trunk and main branch with 8 Bomedo stone-sulfur mixture, especially at the base of the trunk, holes, cracks and saws in the trunk. Holes, cracks to wipe strict liquid medicine, if there is a floc, it should be soaked to kill internal pests.

3. Smear the medicine mud to prevent and cure. Less evaporation in autumn and winter, can be adjusted into mud paste with 36% Lesbon 200 times liquid, smeared with woolly aphid tree trunks, branches, saws, cracks and holes. It works for a long time and can kill pests. Some fruit growers like to cultivate soil at the base of the trunk of apple trees where there are many woolly aphids and bury them in order to kill the woolly aphids. The effect of this method is not good, the soil cracks sink, and after the woolly aphid is unearthed, it can continue to harm the fruit trees.

The above methods can effectively control the woolly apple aphid, but no matter which method, it is difficult to eliminate the woolly aphid, the climate is suitable, and it will propagate and spread rapidly, so it should be controlled regularly.