Pesticide mixing precautions

First, exclude the mixing and see the instructions 1, acid and alkali will affect the stability of the active ingredients. Pay attention to the instructions for the use of pesticides. For example, the first pesticide specification stipulates that alkaline pesticides cannot be mixed, so other pesticides that participate in compounding cannot be matched if they are alkaline pesticides.
2. Many pesticide varieties cannot be mixed with drugs containing metal ions. Therefore, if the first pesticide specification stipulates that it cannot be mixed with a metal ion-containing drug, the other pesticides participating in the compounding cannot be compounded if they contain metal ions.
3. The stereoactive configuration of beta-cypermethrin and cyhalothrin (fungimethrin) is stable only in a narrow pH range, the medium is acidic and easy to decompose, and the medium is alkaline. "And reduce the efficacy, generally not suitable for mixing.

4, microbial insecticides, microbial fungicides, microbial herbicides can not be mixed with chemical fungicides pesticides. If mixed, the chemicals will kill the microbes of these microbial agents and lose their effectiveness.
5. If the instructions are clear and cannot be mixed with that specific pesticide, then it should be directly excluded.
Second, determine the compounding test: Mix the liquid in a transparent glass container to observe whether there are abnormalities such as oil slick, flocculation, sedimentation or discoloration, heat generation, and bubble generation. Where the liquid shows a chemical change or the physical properties of the liquid has a vicious cycle, this compounding is not desirable. If there is no problem in the compounding test, the phytotoxicity test of small areas or single crops in the field should be carried out. If there is no phytotoxicity, it can be used in the field.
Third, pesticides do not mix more than three: pesticides are generally mixed with two varieties, three if necessary, and more likely to produce adverse consequences.
Fourth, the total amount of anti-drugs mixed with discretion: due to the common goal of preventing the same goal, it should be mutually reinforcing, in the preparation method is usually the rule of the effect of the equalization. That is, when the two mixes, each maintains half of the original dose; when three mixes, and so on.
V. Single-agent pesticide compounding according to “each quantity”: “Each amount” when treating different targets is also a means of preventing mixed use of drugs. According to the situation of mixed pests and diseases in the same period, the target of concurrent treatment is confirmed, and mixed drug prevention is adopted. Due to the respective targets, it is reasonable to maintain their effective control dosage (ie “variable”).
6. Mixing of different dosage forms according to the order: the pesticide compounding should be added in the order of micro-fertilizer-wettable powder-gel suspension-water agent-emulsifier, and continue to stir. After one agent is fully dissolved, add the next one. To mix the two wettable powders, first mix the wettable powder first, then dilute with water.
Seven, mixed use of the drug is now available: mixed pesticides should be used now, as soon as possible, can not be stored.
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