MySheen

Control methods of Populus tomentosa in ornamental trees in Garden

Published: 2024-11-22 Author: mysheen
Last Updated: 2024/11/22, Distribution and damage of Populus tomentosa PryeriasinicaMoore, also known as Populus tomentosa and Euonymus holly. It belongs to Lepidoptera, Lepidoptera. Distributed in Shanghai, Nanjing, Wuxi, Suzhou, Hangzhou, Wuhan, Lianyungang and Hefei. Damage to Euonymus tomentosa, Euonymus tomentosa, Golden Heart holly spear, Dahuawei spear, Fufang vine and silk cotton wood and so on. The larvae feed on the host leaves, and when the occurrence is serious, the leaves are eaten light, which affects the normal growth of plants. Morphological characteristics of adults oblate, black back, chest back

Distribution and damage of Populus tomentosa PryeriasinicaMoore, also known as Populus tomentosa and Euonymus holly. It belongs to Lepidoptera, Lepidoptera. Distributed in Shanghai, Nanjing, Wuxi, Suzhou, Hangzhou, Wuhan, Lianyungang and Hefei. Damage to Euonymus tomentosa, Euonymus tomentosa, Golden Heart holly spear, Dahuawei spear, Fufang vine and silk cotton wood and so on. The larvae feed on the host leaves, and when the occurrence is serious, the leaves are eaten light, which affects the normal growth of plants.

The morphological characteristics of the adult are oblate and round, with black back, long yellow hair on both sides of chest and abdomen, and yellow abdomen. Forewings grayish black, slightly transparent, base 1 big 3 light yellow. The rear wing is half the size of the front wing and the color is slightly lighter. The egg is oval. When the larvae mature, the body length is about 15 mm, the abdomen is yellowish green, and the forechest dorsal plate has ∧-shaped black markings. There are 7 longitudinal bands on the back of the body, with hairy tumors and short hairs on the body surface. The pupa is yellowish brown with 7 inconspicuous longitudinal lines on the surface and 2 hip spines.

Life habits occur one generation a year in East China. The eggs hatched from the end of March to the beginning of April in the following year, and the larvae had the habit of causing damage in clusters. From the end of April to the beginning of May, the larvae matured, formed cocoons and pupated in shallow soil, and pupae passed the summer. The adults emerged in the first ten days of November and laid eggs after mating. The eggs were laid on the branches and overwintered with eggs.

Integrated prevention and cure

(1) strengthen maintenance and management, such as cutting off branches with eggs.

(2) trapping and killing adults by black light.

(3) the insecticide control of larvae is to spray 1500 times of Miman liquid in the damage period.

 
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