Sweet potato leaf curl insect, alias sweet potato wheat moth, belongs to Lepidoptera, moth family, mainly damage sweet potato, leeks, morning glory and other convolvulaceae plants. The larvae of sweet potato leaf roll insects infested the leaves after hatching, and the larvae were 4 years old. The action was lively, and they jumped and landed at the touch of a touch. The 2nd to 3rd instar larvae began to spin leaf curls, fed leaf flesh, left the epidermis, and only had reticulate veins in severe cases. Larvae can metastasize more than one leaf each year.

Larvae can also harm young shoots and shoots. After the larvae are matured, the larvae are defoliated in the leaf or earth seams. From June to September, it was the period of its occurrence. Humidity is conducive to sweet potato moths occurring at high temperatures. In severe cases, sweet potato leaves are heavily entwined, presenting a “fire phenomenon” and seriously affecting sweet potato yield. The Greek peasant friends have paid enough attention to the prevention and control work to ensure the safety and security of sweet potatoes.

How sweet potato leaf roll insecticides prevent and control sweet potato leaf roll insects

1. Chemical control. In the early stage of sweet larvae of sweetpotato moth, pesticides can be sprayed with 48% of 1500-fold emulsion of Le Siben EC or 1000 times of 20% butylthiocarbabe EC, and 40-50 kg of mu fluid can be sprayed. The drug time is appropriate at 4 to 5 pm.

2. Manually kill. When the larvae roll leaves are initially damaged, the larvae in the new leaf roll can be pinched in time or the new roll leaves can be taken out of the field for centralized treatment.

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