Classification Of Pesticides

- Sep 19, 2017-

by mode of action

Can be categorized as:

① the stomach poison. Through the worm mouth into its digestive system to poison, such as Trichlorfon.

② tagged Agent. In contact with the epidermis or the attached device, infiltrate the insect body, or corrode the insect body wax layer, or plug the valve to kill pests, such as pyrethroids, mineral oil emulsion and so on.

③ fumigation agent. The use of poisonous gases, liquids or solids in the volatilization of vapors to kill insects or bacteria, such as bromine methane.

④ inside the insecticide. The plant seeds, roots, stems and leaves are absorbed and transported to the whole plant, and in a certain period of time, the pathogen or its activated metabolite enters the insect body with the plant tissue or sucking plant sap from the pest, and acts as a poison, such as a le le.

According to the toxicological effect

Can be categorized as:

① nerve poison. A nervous system that acts on pests, such as DDT, parathion, furan, and pyrethroids.

② breath Poison. Inhibit the respiratory enzymes of pests, such as cyanogen hydrogen acid.

③ physical agents. If the mineral oil agent can plug the pest valve, the inert powder can grind the insect epidermis and kill the pest.

④ specific pesticides. An agent that causes physiological abnormalities in pests, such as repellents that keep pests away from crops, induced by sexual inducement or bait to lure insects, so that the pest taste inhibition no longer eat so that hunger and death of the food agent, for the adult reproductive function of male and female infertility or bisexual sterile agent, affect the growth of pests, metamorphosis, Reproductive insect growth regulator, etc.