Introduction to Organophosphorus Insecticides

With the development of the pesticide industry, the types of pesticides are increasing, but the main varieties used in production are organophosphorus, carbamate, and pyrethroid vinegar pesticides. New types of pesticides have not been widely used except for a few varieties. Organophosphorus pesticides are a class of organic synthetic pesticides containing phosphorus. Their biological activity was discovered around 1936, and they developed rapidly after the Second World War, receiving extensive attention from various countries. There are many kinds of organophosphorus preparations with different performances, which are characterized by strong virulence against pests and high efficacy. Decomposition, the residual effect is very short, suitable for use on fruit trees and vegetables, some varieties have a long residual effect, suitable for controlling underground pests; some varieties have systemic or osmotic effects, easy to use and not easy to harm natural enemies. The main disadvantages of organophosphorus pesticides are: some commonly used species are highly toxic agents, which can easily cause acute poisoning of humans and animals. Most varieties are easy to decompose and fail.