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Mechanism of action and features of...

Published:2010.09.03 News source:Jiangsu Inter-china Group Corporation Views:
Botanical pesticide comes from nature, can degradation. It will not pollute the environment and agricultural products, it will almost not accumulation toxicity in human body and environment. It is safe to human and livestock. it has little damage to natural enemy pest and the pests are hard to form antibody. The features of botanical pesticides are low toxicity, no residue, keeping high quality, low cost. With the growth of population and environmental pollution, research and development safety, no toxicity, source wide, low cost botanical pesticides widely and deeply has important economic sense, the ecological sense and social significance.
1 the active ingredient of botanical pesticide
The natural plants have rich substance with insecticidal activity. it can be distinguished by chemical structure.
1.1   Alkaloids
This tape of substance has the most toxicity and has many mode of action. For example, Poison to kill, full of shelter and refuse to eat, and suppress the growing and so on. We have found 6000 kinds of Alkaloids at present. Nicotine, camptothecine, stemonine, veratrine, matrine, wilforine, trilobine, bitler bean chioali. have been proved to kill pests.
1.2   Terpenes
This tape compound include pinene, monoterpenoids, diterpene, triterpenoids and so on. Their action is refusing to eat, the anesthetic, not out of breath, and no growth, damage Information and insects mating of pests, touch and stomach poison. The products are azadirachtin, toosendanin, tea saponin, celangulin, rhodojaponin and so on.
1.3 Flavonoids
Flavonoids compound always exist in glycosides or aglycon, dihydrophelloside or cy-narotrioside. The rotenone and elliptinone have insecticide action. Mode of action is refuse to eat and poison to kill.
1.4 volatile oils
it is a tape of plant secondary metabolite with low molecular weight, this tape has not only poison to kill, acrylofume, refusing to eat and suppress the growing but also temptation effect with insect sex pheromone. For example, peppermint oil, oil of thyme, cinnamon, turpentine and so on.
1.5 others
There are others. Such as pyrethrins, inokosterone, tomatine and so on.
2 Mechanism of action of botanical pesticide
The active ingredient of botanical pesticide is secondary metabolites, the most secondary metabolites has poison to kill, action interference and growth accommodation. The pests are hard to form drug resistance. The research shows botanical pesticide has special effect on pests. The mode of action is multiple, the mechanism of action is complex. It has Poison to kill, full of shelter and refuse to eat, and suppress the growing and so on.
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