MySheen

Control of Buxus inchworm

Published: 2024-11-09 Author: mysheen
Last Updated: 2024/11/09, Occurrence regularity: the larva eats leaves and occurs for three generations in Hunan. The overwintering adults Eclosion and oviposition in mid-April, then pupation in late April, Eclosion in mid-June, second generation damage in late June, pupation in early August, Eclosion in mid-August, damage to the third generation in late August. The worst victims are the first and second generations. The damage is the most serious in the mild climate and abundant rainfall season, which can gnaw off the leaves of the whole plant in 2 to 3 days, making the plant bald. In

Occurrence regularity: the larva eats leaves and occurs for three generations in Hunan. The overwintering adults Eclosion and oviposition in mid-April, then pupation in late April, Eclosion in mid-June, second generation damage in late June, pupation in early August, Eclosion in mid-August, damage to the third generation in late August. The worst victims are the first and second generations. The damage is the most serious in the mild climate and abundant rainfall season, which can gnaw off the leaves of the whole plant in 2 to 3 days, making the plant bald. In the season of sufficient rainfall, the plant can still grow leaves, such as high temperature and drought after being killed, the whole plant will die, so it is necessary to control it in time.

Prevention and control methods:

a. Turn the soil in winter and kill the pupae of overwintering insects.

b. The flying ability of overwintering adults is weak, and they are caught and killed in time during Eclosion.

c. Timely spraying and control in the early stage of larval damage

The control agents are as follows: 1000 times of trichlorfon crystal, 5000 times of chlorhexidine, 0.2 to 50 million spores / ml of Bacillus thuringiensis.

 
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