Insecticide Single Formulation

Insecticides can be divided into biological sources and chemical synthesis.
Biogenic insecticides include: ① preparations of effective insecticidal ingredients extracted from higher plants, such as natural pyrethrin, rotenone, etc.;
② Insecticides made from living organisms mainly include fungi (such as Beauveria bassiana), bacteria (such as odontobacillus) and viruses (such as Bacillus borer).
③ Insect physiological active substances, such as pheromones.
Chemical synthetic pesticides mainly include: Inorganic insecticides (e.g. White arsenic As2O3, Sodium fluosilicate, Na2SiF6, etc.), organochlorine insecticides (such as chlordane, BHC, DDT, toxaphene, etc.), organophosphorus insecticides (such as dichlorvos, trichlorfon, Dimethoate, malathion, chloraphenone, etc.), carbamate insecticides (such as carbaryl, sulfenocarb, etc.) and pyrethroid insecticides (such as fenvalerate, cypermethrin, etc.).
The main ways in which insecticides can kill pests are:
① Touching agents enter the body through the epidermis of the pest and play a role, causing the pest poisoning and death;
② Gastric toxic agents are absorbed by the stomach and intestines directly after being eaten by pests, causing them to die of poisoning;
③ Some fumigation drugs are volatile, and their vapors enter the body through the respiratory tract of pests, causing them to die of poisoning;
(4) ingestion drugs are first absorbed by the crop, and conducted to the whole plant, when pests ingestion, eating crops, so that it died of poisoning.