What pesticides do caterpillars spray on soybean leaves?

The principle of pyrethroids to kill insects is to disturb the normal physiological function of insect nerves and make them die from excitement, spasm to paralysis. Pyrethroid has the advantages of small dosage, low concentration, little environmental pollution and safety to people and animals. The disadvantage is that it is highly toxic to fish and harmful to some beneficial insects. Long-term repeated use may also lead to insect resistance.

Pyrethroid is a broad-spectrum insecticide, which can control many kinds of pests. Its insecticidal toxicity is 10 ~ 100 times that of the older generation pesticides such as organochlorine, organophosphorus and carbamate. Pyrethroids have a strong killing effect on insects, and some species have stomach toxicity or fumigation, but their systemic effect is unknown.

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Precautions:

1. This product is not registered for rice, but local farmers found that this product has a good control effect on rice and rice leaf roller when controlling tea pests.

If farmers want to control unregistered crop pests, such as rice, especially in areas where rice and mulberry trees are mixed, silkworms are easily poisoned, and they must be careful to prevent serious losses caused by silkworm poisoning.

2. This product is toxic to fish, shrimp and bees. When using, please stay away from the beekeeping area and do not pour the remaining liquid into the pool.

3. Because frequent use of pyrethroid insecticides will make pests resistant, it is necessary to use them alternately with other insecticides to delay the generation of drug resistance. Crops should use them 1-2 times a season.