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 Pesticide 生物农药
azadirachtin  
 
Azadirachtin (neem products) - There are several neem-based insecticides available for tree fruit, and nearly all have azadirachtin as the active ingredient. Azadirachtin is derived from many parts of the Indian neem tree. The insecticidal activity is rather complex; azadirachtin may act as an ovipositional deterrent, feeding deterrent, and insect growth regulator. The IGR activity itself is complex relative to other IGRs, in that azadirachtin interferes with neuroendocrinal control of metamorphosis, affecting both ecdosteroidal and juvenile hormone titers. Neem products in general are very safe to applicators.