What are the key points of knowledge about mixing pesticides?
In recent years, vegetable nematode disease has become an important type of disease in vegetable production, especially in protected vegetable production. It occurs rather commonly, causes relatively severe damage, and is also relatively difficult to control. For the control of vegetable nematode disease, in addition to some conventional agricultural control measures (such as selecting resistant and tolerant varieties, cultivating disease-free seedlings, rational...
Mixed use of organophosphorus and organophosphorus, such as the tetraethyl powder or ethyl parathion powder made by mixing methyl parathion or ethyl parathion with trichlorfon, and the dimethoate-malathion mixture made by mixing trichlorfon with malathion; mixing of organophosphorus and pyrethroids, such as omethoate-fenvalerate made by mixing omethoate with fenvalerate, and dimethoate-fenpropathrin mixture made by mixing dimethoate with fenpropathrin; mixing of carbamates and organophosphorus, such as the leafhopper-malathion emulsifiable concentrate made by mixing BPMC with malathion, and the mixed granules of carbofuran and monocrotophos; mixing of organic nitrogen and carbamates, such as the bisultap-methiocarb wettable powder made by mixing bisultap with metolcarb. Mixing insecticides with synergists: currently commonly used synergists include piperonyl butoxide, propyl isome, thanite, and synergistic phosphorus. These synergists themselves have no direct toxic killing effect on pests, but when added to insecticides, they can inhibit the action of oxidase, prevent the insecticide from being decomposed, and improve the effect of the insecticide. However, synergists cannot enhance the effect of all pesticides, and the degree of synergism for different insecticides is also not the same. Mixing fungicides with insecticides: mixing fungicides with insecticides is mainly to give play to the effects of "simultaneous control of disease and insects" and "one spray with multiple effects." For example, when phenthoate, carbaryl, and kasugamycin are mixed together, while controlling disease, they can also simultaneously control the striped stem borer, rice blast, planthoppers, leafhoppers, and so on.