We all know that avermectin is a relatively broad spectrum of pesticides, since methamidophos is not used, avermectin has become a more mainstream pesticide, avermectin excellent cost performance, has been liked by many people, avermectin is not only an insecticide, but also acaricides, but also can kill nematodes.
What are the characteristics of avermectin?
Avermectin touch killing, gastric toxicity, permeability is also strong, is a macrolide disaccharide compound, a natural product isolated from the soil microbial species, on insects and mites have a touch killing and gastric toxicity, and has a little fumigation effect, no systemic effect.
It has a strong osmotic effect on the leaves, can kill subcutaneous pests, long residual period, but does not kill eggs. The mechanism of action is different from that of general insecticides, it interferes with neurophysiological activities, releases r-aminobutyric acid, inhibits the nerve conduction of arthropods, paralyzes mites, etc., inactively does not take food, and can die in two or three days.
Because it cannot cause insect dehydration, the time to death is very slow, but it has a direct killing effect on predatory and parasitic natural enemies, but because there is less residue on the surface of the plant, the damage to beneficial insects is small, and it has a significant effect on root-knot nematodes.
Avermectin works well against Lepidoptera pests
Avermectin in the Lepidoptera pest cabbage moth registration is more, the current avermectin mainly in the waterway to play curly leaf borer, because of the long use time, generally will be compound tetrachlorospermamide, chlorantran benzamide and so on to control the curly leaf borer.
In recent years, rice has used high doses of avermectin to fight resistant dimorphs, compounded with other agents, the effect is good, but now it is used less in vegetables, because of resistance.
The effect of controlling mites is good
Avermectin for red spiders and other mites effect is still good, often with acetazole and other compounds to control mites, because avermectin has a strong penetration ability, so the control of mites also has a certain market. If you want to know more about agricultural materials, welcome to follow me, if you feel that the content is helpful to you, you can forward it to a friend