February 22, 2025

How to scientifically compound pesticides

Mixing fungicide with fungicide

Generally, a systemic therapeutic fungicide is used in combination with a protective fungicide. After being absorbed by the plant body, the systemic fungicide can be transported to various parts of the plant body to kill the bacteria in the plant. The protective fungicide remains on the surface of the plant to prevent the invasion of pathogens. For example, dystrophic manganese ZnZ is a combination of systemic therapeutic ruthenium and protective mancozeb; compound carbendazim is compounded by carbendazim and Jinggangmycin; The agent is made up of carbendazim and thiram.

Mixture of fungicides and insecticides

This type is mainly for the purpose of exerting both bactericidal and insecticidal effects. For example, Daofengsan, Xizhiyin and Chunleimycin can be combined to treat the stem borer, rice warm disease, and planthopper and leafhopper.

Herbicides and herbicides

Currently, this type of compounding is the most widely used. Generally, a long-lasting herbicide is combined with a herbicide having a short duration, and a systemic herbicide is combined with a contact herbicide. In addition, insecticidal spectrum complementation is also carried out, such as a herbicide for killing monocotyledons and a herbicide for killing dicotyledons, and a herbicide for killing broadleaf weeds is mixed with a herbicide for killing grass weeds. Butachlor has a good effect in controlling most of the annual weeds, but it has no obvious effect on controlling broadleaf weeds such as ragweed and kohlrabi, while cisplatin has high control effect on broadleaf grass. The compounded butyl granules can complement each other. In addition, the formulas that have been applied well in practice include chlorpyrifos plus dimethyltetrachloride, herbicide ether plus dimethyltetrachloride, herbicide plus dimethyltetrachloride, chlorpyrifos plus diuron, and chloromeron. Add chlorpyrifos, trifluralin plus glutamate, paraquat plus simazine.

Insecticide and insecticide compounding

The compounding and mixing of organic phosphorus and organic phosphorus, such as methyl parathion or ethyl parathion mixed with tetrabasic powder or dichlorvos powder, methamidophos and dichlorvos mixed with amine rival phosphorus, enemy a mixture of organic bacteria and pyrethroids, such as omethoate, dimethoate and pyrethroids mixed with omethoate and fenvalerate Mixed chrysanthemum, methamidophos and deltamethrin mixed with cypermethrin; mixed with carbamate and organic phosphorus, such as leaf emulsifiable concentrate mixed with marathon, A mixture of carbofuran and monocrotophos; a combination of organic nitrogen and carbamic acid, such as a two-speed wettable powder mixed with insecticide and fast-acting.

Insecticide and synergist

Sesame oil, which was first discovered in sesame oil, has synergistic effect on natural pyrethrins. Later, it has successively developed synergistic ether, synergistic ester, synergistic and synergistic phosphorus. These synergists do not have a direct poisoning effect on pests, but they are added to the insecticide to resist the action of oxidase, prevent the pesticide from being decomposed, and enhance the effect of the pesticide. However, synergists do not make all pesticides more effective, and the synergistic effect on different pesticides is not the same.

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