Pale sword night moth belongs to the high fescue, rye grass, precocious grass and other cold season lawn common pests, is a bulioytic lepidopteran night moth pest, also known as light sword night moth, light sword attack night moth, small gray night moth, when the harm is serious, it will cause lawn baldness or even death overnight. Seriously affect the integrity and ornamentality of the lawn.
After hatching, the larvae of the pale sword moth endanger the nearby lawn rhizome, and the 1-2 year larvae eat the leaf flesh and retain the leaf epidermis. After the 3rd age, the leaves are eaten, the grass roots are bitten, and the 5-6 years old enter the binge eating period, and the leaves and young stems are eaten. The larvae feed day and night, mainly at night. When the amount of occurrence is not large, the lawn appears yellow, and when it is severe, the lawn dies. The light sword night moth is conducive to its growth and reproduction in high temperature, dryness and grass, and it is harmful from May to October, and it is more harmful and prone to outbreaks in July and September.
Prevention and control methods:
Strengthen the daily maintenance and management of the lawn, combined with pruning to remove egg blocks, centralized treatment, and reduce the number of insect infestations.
Use special lights to trap adult insects.
It uses natural predators such as magpies, sparrows, and beetles to feed on their habitats.
In the heyday of young larvae, chemical agents are selected for control, such as the commonly used pyrethroid insecticide effect is better, after 3 years of age the insect body resistance is enhanced, you can choose a better control effect of the agent, such as the choice of Qilin Royal Moth a bottle of water 200-300 pounds, spray control or use Qilin Guangzheng a bottle of water 300 pounds, spray control. Note that the drug control should be based on the insect situation, the amount of grass, the amount of appropriate medicine, and as far as possible in the evening (because the larvae have a habit of day and night), spray evenly, to ensure the effect of drug control.