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Occurrence and control of potato tuber moth

Published: 2024-11-24 Author: mysheen
Last Updated: 2024/11/24, Potato tuber moth is also called potato borer, tobacco leaf moth, and the masses are called skin worm, embroidery worm, potato maggot and so on. First, the harmful symptoms are mainly caused by larval decay, mostly from the bud eyes and broken skin of potato pieces, and the larvae hatched on the plant will spread with the wind and feed on the leaves through the leaves. After the injured leaves die, the larvae transfer to other leaves to do harm. Second, the occurrence regularity of potato tuber moth occurs for several generations a year, overwintering in various insect states on the remnant leaves of sweet potatoes and various hosts in the field. Cheng

Potato tuber moth is also called potato moth, tobacco leaf miner moth, the masses called string skin worm, embroidery worm, potato maggot and so on.

I. Harmful symptoms

The damage is mainly caused by larvae, mostly from the bud eyes and broken skin of potato pieces. The larvae hatched on the plants spread with the wind and drill into the leaves from the leaves. After the dead leaves die, the larvae move to other leaves to harm.

II. Rules of occurrence

The potato tuber moth has several generations a year and overwinters in various insect states on the leaves of mother tubers and various host plants in the field. Adults day out night, phototaxis, flying power is not strong. Female moths laid eggs most frequently at bud eyes, broken skin, crack and sticky soil. The insect can adapt to lower temperatures and adults can still survive at-7 ℃. Flood years occur lightly, drought years occur heavily. Sowing shallow, thin soil occurred heavy, and sowing deep, thick soil occurred light.

III. Prevention and control methods

1. Seed potato fumigation treatment: divide 12 pieces of aluminum phosphide or cricket seed medicine into three parts, wrap them tightly with toilet paper, evenly put them in the middle of 1000 kg potato pieces, cover them tightly with film, do not leak air, suffocate for 5 days when the temperature is 12~15℃, and seal them for 3 days when the temperature is higher than 20℃. Be careful not to fumigate in places where people live, so as not to cause poisoning. The waste residue after use is poisonous and should be buried deeply.

2. Storage period control: before storage, should carefully clean the storage room, close the doors and windows, prevent tuber moth fly into the eggs. Tuber moths were found and killed with dichlorvos, dichlorvos, etc.

3. Field control: strictly select insect-free seeds when sowing. If transparent spots harmful to larvae are found on leaves in the field, the leaves should be removed and taken out of the field and buried or burned. Do a good job of cultivating soil to prevent potato pieces from being exposed. Hair moth peak period should be timely spray kill dichlorvos, dichlorvos and other pesticides kill moths.

 
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