The rational mixing of pesticides can improve the control effect, delay the development of resistance to pests and diseases, improve the control effect, reduce the dosage, and prevent the use of pesticides for different pests and diseases to reduce the number of applications, thereby reducing labor costs. If the compounding is unreasonable, it can be dangerous. If the compounding is not effective, the drug will be harmful. Pesticide mixing order 1 The order of pesticide mixing should be accurate. The order of foliar fertilizer and pesticides is usually: micro-fertilizer, water-soluble fertilizer, wettable powder, water-dispersible granules, suspending agent, microemulsion, water emulsion, water, and emulsifiable concentrate. (In principle, do not mix more than three kinds of pesticides), mix them thoroughly with each addition, and then add the next one. 2 After adding water and adding medicine, for the second dilution and mixing, it is recommended to add half a bucket of water to the sprayer, and then add the first pesticide and mix. Then, dilute the remaining pesticides with a plastic bottle, dilute them, pour them into the sprayer, mix them, and so on (if you want to work well, don't be lazy). 3 No matter what kind of medicine is mixed, you should pay attention to "currently available, not suitable for a long time." Although the drug solution does not respond when it is just dispensed, it does not mean that it can be left for a long time, otherwise it will easily produce a slow reaction and gradually reduce the drug effect. Principle of pesticide mixture â— Mixture of pesticides with different poisoning mechanisms: Mixing pesticides with different action mechanisms can improve the control effect and delay the development of resistance to pests and diseases. â— Pesticides with different poisoning effects: mixed insecticides have contact, stomach poison, fumigation, and internal absorption. The fungicides have protective, therapeutic, and systemic effects. If these drugs with different control effects are mixed, Can complement each other and produce good control effects. â— Mixing insecticides that act on different insect states: Mixing insecticides that act on different insect states can kill various pests in the field and kill insects thoroughly, thus improving the control effect. â— Mixtures with different aging effects: Some kinds of pesticides have good effect of quick-acting control, but the duration of effect is short; some quick-acting effects are poor, but the action time is long. The combination of such pesticides not only has good control effect after application, but also plays a long-term prevention and treatment role. â— Mixing with synergists: Synergists have no direct poisoning effect on pests and diseases, but they can improve the control effect when mixed with pesticides. â— Mixing pesticides for different pests and diseases: When several pests and diseases occur at the same time, this method can reduce the number of spraying and reduce the working time, thus improving the efficiency. Precautions for mixing pesticides Although there are many advantages to mixing pesticides, it is forbidden to mix them at random. Unreasonable mixing is not only useless, but also has the opposite effect. Pay attention to the following points when mixing pesticides. â— Does not change physical properties That is to say, after mixing, there is no occurrence of oil slick, flocculation, sedimentation or discoloration, and no occurrence of heat generation or bubble generation. If the same powder, or the same granules, fumigants, aerosols, generally can be mixed; Between different dosage forms, such as wettable powder, emulsifiable concentrate, concentrated emulsion, suspension, water solvent and the like, the liquid agent is not suitable for mixing. â— Does not cause chemical changes 1 Including many agents can not be mixed with alkaline or acidic pesticides, under alkaline conditions such as Bordeaux mixture, stone sulfur mixture, carbamate, pyrethroid insecticide, thiram, dexame ring and other dithio amino groups Formic acid fungicides are prone to hydrolysis or complex chemical changes that destroy the original structure. 2 Under acidic conditions, 2,4-D sodium salt, 2 methyl 4-chlorosodium salt, and metformin will also decompose, thus reducing the efficacy. 3 In addition to acidity and alkalinity, many pesticide varieties cannot be mixed with drugs containing metal ions. 4 Dithiocarbamate fungicides, 2,4-D herbicides mixed with copper formulations can produce copper salts to reduce the efficacy. 5 Methyl thiophanate and thiophanate can be complexed with copper ions and lose their activity. 6 Remove copper preparations, other preparations containing heavy metal ions such as iron, zinc, manganese, nickel, etc., should be used with caution. 7 Stone sulphur mixture mixed with Bordeaux mixture can produce harmful copper sulphide and also increase the soluble copper ion content. 8 Enemy, butachlor and so on can not be mixed with organophosphorus and carbamate insecticides, and some chemical changes may cause phytotoxicity. â— Pesticides with cross-resistance should not be mixed For example, the fungicide carbendazim and methyl thiophanate have cross-resistance. Mixing not only does not delay the development of resistance to pathogens, but accelerates the development of drug resistance, so it cannot be mixed. â— Biopesticide cannot be mixed with fungicides Many pesticide fungicides are lethal to biological pesticides. Therefore, microbial pesticides and fungicides cannot be mixed. (Source: Agricultural Resources Guided Pesticide) Tungsten Trioxide,Blue Tungsten Trioxide Msds,Mercury Blue Tungsten Trioxide,Yellow Crystalline Powder HUNAN ZHONGNAN ANTIMONY&TUNGSTEN TRADING CO.,LTD , https://www.znat.com.cn