The snail looks slow to move, people and animals are harmless, but it has more than 26,000 teeth in its small mouth, and the peels of young citrus leaves and old leaves can be nibbled, and if you do not pay attention to prevention and control, the outbreak will form a greater harm. Similar to snails are wild slugs, also commonly known as slugs.
The snail species that harm citrus is called the homogeneous snail, which is distributed in all citrus producing areas in China. Wild slugs are mainly distributed in the Yangtze River Basin and the citrus-producing areas of East China in South China.
Both pests use adults and nymphs to suck the cortex of young citrus leaves, shoots, young stems and fruits with their teeth. The leaves are bitten into missing, perforated or leaving only leaf veins, causing diseases such as ulcers to invade, the fruit is bitten into holes, forming scarred fruits, severe fruit shedding, and mucus contaminating the fruit surface.
Snail pests are most severe during the peak rain and heat in June and August, and snails of the same type often gather in piles. It prefers to be active in the early morning and evening and at night, especially on continuous rainy days. Wild slugs and snails have similar habits, but somewhat different, wild slugs like to be active at night and harm, and in the early morning they dive into a dark and humid environment.
Snails are extremely adaptable, because they have shells, and like to be harmful on rainy days, so light spraying is more difficult to deal with. Snails are extremely viable and have a strong tolerance for cold, heat, hunger and drought. Snails have a long lifespan, generally 2-3 years, up to 7 years. And snails reproduce quickly, hermaphrodites, allogeneic mating, both male and female lay eggs, laying eggs 6-7 times a year, each adult can lay 30-235 eggs.
Article source: Southern Rural Daily Photo: Baidu Encyclopedia
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