Avermectin is a widely used agricultural or veterinary bactericidal, insecticidal and acaricidal agent. Also known as Aden. Avermectin is a 16-membered macrolide compound with bactericidal, insecticidal, acaricidal and nematicidal activity first developed by Omura and others of Merck, Japan. It is a chain of Streptomyces. Fermentation of mold Streptomyces avermitilis.
Abamectin has stomach poisoning and contact killing on mites and insects and cannot kill eggs. The mechanism of action differs from that of general insecticides in that it interferes with neurophysiological activities and stimulates the release of gamma-aminobutyric acid, which inhibits the nerve conduction of arthropods. Adult mites, nymphs and insect larvae are paralyzed after contact with avermectin, inactive, not feeding, and die after 2 to 4 days. The avermectin lethal effect is slower because it does not cause rapid dehydration of insects. Although avermectin has a direct contact killing effect on predatory insects and parasitic natural enemies, it has little damage to beneficial insects due to the small residual surface of plants. Abamectin is not adsorbed by soil in the soil and is decomposed by microorganisms, so it has no cumulative effect in the environment and can be used as an integral part of comprehensive control. It is easy to prepare, and the preparation can be used by pouring it into water and stirring it, which is safe for crops.
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