In the process of lawn growth, if a large area of yellowing is found, in addition to diseases, leaf-eating pests are also one of the more common causes, and the larvae of the light sword night moth often eat the roots of the plant, often causing the lawn to turn yellow, if not prevented in time, it will lead to the death of the entire lawn.
【1】Hazard characteristics of the lawn light sword moth:
At 1 to 2 years of age , only the tender leaf flesh is eaten , leaving a transparent leaf epidermis. Dispersed after 2 years of age, after 3 years of age to eat leaves, eat into a lack of moments, nibble on the stem of the lawn to eat young stems; after entering the 5 to 6 years of age, the amount of food increased greatly, for the overeating period, the leaf veins and young stems were eaten, and the damage of biting day and night on rainy days and nights was harmful.
【2】Lawn light sword night moth larval identification:
The body color of the larvae varies greatly, with gray-brown at first hatching and a reddish-brown head; green after feeding; the mature larvae are cylindrical, with a body length of 13 mm to 20 mm, a light brown oval head, a blue-green abdomen, and a black "eight" pattern along the metamorphosis line; there is a suspended death, and the shock curl is "C" shaped.
【3】Occurrence of the lawn light sword moth:
The old mature larvae of the pale sword night moth overwinter in lawns, weeds, etc. In early to mid-June, the overwintering larvae pupate gradually feathered and laid eggs, and the insect was infested from May to October. 4-5 generations occur each year. The larvae feed on plant leaves and are binge eating pests, feeding nearby after hatching.
【4】How to control the harm of the pale sword moth in the lawn?
1. In July-September, the cut grass leaves are often removed regularly.
2. The generational overlap of the light sword night moth is obvious, and the control period should be controlled at the peak of adult spawning or the early stage of larval hatching, and the Qilin Royal Moth can be sprayed with 200 kg of water per bottle.
