2024 Author: Gavin MacAdam | [email protected]. Last modified: 2023-12-16 13:38
Cherry shoot moth causes serious harm to cherries and cherries, severely damaging and sometimes destroying tiny buds and leaves with flowers. It is impossible to avoid the attacks of this voracious pest and some other stone fruit breeds. Damaging buds and fruit buds, harmful parasites noticeably reduce the fruiting of trees - in some seasons, the percentage of buds mutilated by them can reach fifty percent. To control these pests, it is necessary to familiarize yourself with the appropriate control measures
Meet the pest
The cherry shoot moth is a small reddish-brownish butterfly, the wingspan of which reaches 1 - 1, 2 cm. And the length of its body is about 5 mm. On the front brownish wings of the pests, you can see small longitudinal stripes, painted in white-mother-of-pearl tones. Narrow hind wings covered with tiny hairs are characterized by a lighter color.
Eggs of gluttonous parasites overwinter near the buds or in cracks in the bark. In the spring, as soon as the buds begin to swell, miniature caterpillars will appear from the eggs, endowed with brown heads and greenish-yellowish legs and a body. Caterpillars usually grow in length up to 6 mm. Having hatched from eggs, they immediately begin to attack the buds and young leaves, and a little later, harmful parasites reach the buds, leaving characteristic cobwebs on them, densely covered with excrement. Such activity of caterpillars often leads to drying of the shoots. Outwardly, these symptoms are somewhat reminiscent of freezing of fruit crops, so many gardeners do not always begin to fight the cherry shoot moth in a timely manner.
As soon as flowering ends (approximately in May or June), caterpillars on cobwebs begin to descend to a depth of up to five centimeters into the soil of trunk circles - there they will pupate. By the way, it is during this period that digging and loosening the soil under the trees give the best results!
Growing up to 4 mm in length, golden pupae hide in two-layer spider cocoons. And in July, butterflies slowly begin to fly out - their years ends only at the end of summer. In the daytime, the adult moth concentrates on the twigs, on the undersides of the leaves, or in the grass. Approximately in August-September, butterflies begin to lay under the dying bark or under the scales of the buds from one to three hibernating eggs, decorated with tiny black dots. And the total fertility of females is from twenty-five to thirty eggs.
How to fight
In early spring, it is recommended to treat fruit crops with a 1% solution of DNOC - this will help get rid of overwintered eggs of cherry shoot moth. And as soon as the tiny buds begin to swell, the trees are sprayed with an eighty percent solution of Chlorophos, the drug Iskra (one tablet is taken for every ten liters of water) or a ten percent solution of Karbofos. In addition, it is possible to carry out treatments with "Nitrafen", "Dikol" or "Metathion".
If there are too many pests on the site, then when the fruit trees bloom, they are re-treated with insecticides or more gentle biological preparations. For this purpose, you can use decoctions of onions or garlic, as well as infusions of chamomile inflorescences, burdock or tobacco leaves.
Both in the presence of a cherry shoot moth on the site, and for preventive purposes at the beginning of summer, it is necessary to loosen the soil in the near-trunk circles - this measure contributes to the destruction of a fairly decent number of pupae. And in order to get rid of the eggs of harmful parasites, you should remove the old bark from the fruit crops, cleanse the young bark from growths and lichens, and quickly collect and destroy the fallen leaves.
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