Why pesticide for apple bores is needed
Efficient pesticide for apple bores is needed because there are several borers that mercilessly attack apple trees. Gardeners must identify and control these pests. However, apple tree borers may remain unnoticed. These perfidious insects pave their ways under the bark of vulnerable apple trees and may even kill young plants.
Insects that require use of pesticide for apple bores
Flatheaded apple tree borer
Among the pests that require the application of pesticide for apple bores is flatheaded apple tree borer Chrysobothris femorata. Chrysobothris femorata is a dark brown beetle of 1/2 inch long. These beetles love the sun and are particularly active in June and July. They lay eggs from June to September. The larvae are extremely destructive for trees because they feed on the cambium boring tunnels and creating galleries.
Roundheaded apple tree borer
Another insect that needs the use of pesticide for apple bores is the roundheaded apple tree borer Saperda candida that attacks not only apple trees, but also other fruit trees. The insect is about 1 inch long. The body is white with three brown stripes. Saperda candida lays eggs from late June to early August.
The larvae make tunnels below and above the ground.
The codling moth Carpocapsa pomonella feeds on apples and other fruit. The gray moth is about 1/2 inch long. It is striped with brown patches at the base of the wings. The moth lays white, flattened eggs on leaves. The larva has a brown head and pinkish white body. Larvae burrow into the fruit, feed on the flesh, and then move to the fruit center to consume the seeds.
Do pesticides for apple bores exist?
The use of pesticides for apple bores such as carbaryl, permethrin and imidacloprid during the summer becomes necessary due to the appearance of adult insects that lay eggs.
Insecticidal control with pesticides for apple bores
The foliage spray of pesticide for apple bores such as carbaryl or phosmet may be used when adult insects appear for the first time. The application can be repeated 3 weeks later. Pesticides for apple bores may be also applied to the trunk and large scaffold branches as an alternative approach. Pesticides for apple bores may be also applied to destroy the pests before they lay the eggs. However, these pesticides do not control the larvae that penetrated into the tree. In this case, it is good to use a root drench of systemic pesticide imidacloprid to control the larvae. The wounds or cuts must be protected with covering the exposed surfaces with contact pesticides for apple bores and subsequent wound dressing. To protect from females that lay eggs, it is good to apply a deterrent wash on the trunk surfaces with a paintbrush. For this purpose professionals recommend an alkaline mixture of insecticidal soap and caustic potash.
Natural pesticides for apple bores
If you free the bases of trees of vegetation, it creates conditions for exposing the pests to their natural adversaries, such as carpenter ants, that penetrate into galleries searching for larvae. Useful are also the parasitic wasps and flies as well as the woodpeckers. Removing of larvae with a knife may also be helpful.