How to prevent and treat insects from the lotus flower moth

Spodoptera litura, also known as lotus insect moth, tawny burglar, is Lepidoptera, Noctuidae. Spodoptera litura occurs throughout the country and is an overeating pest. The major hazard zones are in the provinces of Henan, Hebei, and Shandong in the Yangtze River basin in Jiangxi, Hubei, Hunan, Zhejiang, Jiangsu, Anhui and the Yellow River basins. Spodoptera litura is a polyphagous pest, and there are more than 290 species of 99 families known to be harmful to the plant. Among them, more than 90 species are preferred. For the prevention and control of lotus pests, we can introduce the following methods:

Symptoms of damage: Newborn egg larvae feed on the back of the leaf, leaving only the epidermis and veins. The damaged leaves are like screens. Dispersion hazards after 3rd instar, the leaves will be eaten as nicks, the leaves will be eaten for a long time, and even the young stalks will be eaten. When the larvae eat out of a field, the larvae can migrate in groups to harm the neighboring fields.

Morphological characteristics, control methods: 1, biological control - can use bacterial insecticides, such as domestic Bt emulsion or insecticide liquid No.6, usually 500 to 800 times the dilution concentration. 2, chemical control can be used phoxim 50% EC 1000 times dilution, deltamethrin 2.5% EC 3000 times, or 21% kill EC 4000 times.

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