Avermectins

Tag, stomach toxicity, strong penetration. It is a large ring ShuangTang ester compounds. Separated from the soil microorganisms on the natural products, worm and mites have thrown and stomach toxicity and a faint fumigated, uptake role. But it has strong penetration of leaf epidermis, can kill pests, and reasons of long period. It does not kill the eggs. The use of pesticides and the general mechanism of different neural physiological activities it is released, stimulating, and r. - amino butyrate, r of amino butyrate arthropod nerve conduction, mites, if mites and insects and larvae and potions after contact, don't appear paralytic symptom is not taking, 2-4 days after death. Because no cause rapid dehydration, so it insects of lethal effect slower. But on the predatory and parasitoids have direct damage because of plants, but less so for surface residue, issues of injury. Section of root nematode obvious effect.