What is the harm of diamondback moth to cherry blossoms? How to prevent and cure?
What is the harm of diamondback moth to cherry blossoms? How to prevent and cure?
The harm of diamondback moth is mainly caused by its larvae biting the leaves of cherry blossoms. The newly hatched larvae ate the residual epidermis of mesophyll in clusters, dispersed the damage when they grew up, and ate up the whole leaves in severe cases.
There are many species of diamondback moths that harm cherry blossoms, such as brown-edged green moth, Chinese green moth, camphor moth, small black thorn, and so on. The adults of the diamondback moth are densely scaly, usually yellowish brown to green, with simple red or brown markings. Its larvae, commonly known as itchy spicy seeds, have prickles and poisonous hairs on the body, which can irritate people's skin. The larvae are short and fat, oval in shape, bright in color, small in head and capable of shrinking into the forechest.
The diamondback moth usually produces one generation a year in North China, and overwinters with mature larvae in the soil. In the second year, it pupated in May, the adults appeared in June, and laid eggs on the back of the leaves near the main vein. The egg mass is flaky. The larval damage period is from July to August. Adults are daytime, latent, nocturnal and phototaxis.
Measures to control diamondback moth: one is to eliminate cocoons on branches and bark or in the soil in winter or early spring. The second is to remove the eggs and leaves in time, smash the eggs and larvae, and do not touch the skin. Third, chemical control, can spray 50% fenitrothion EC 1000 times liquid or 90% trichlorfon crystal 1000-2000 times liquid and so on.
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