Note: The pesticides are blended in this way, and the effect is completely useless!

----Welcome to Le Nong to share----- Reasonable mixing of pesticides can improve the control effect, delay the development of disease and insect resistance, improve the control effect, reduce the amount of pesticides, and the mixed use of pesticides for the control of different diseases and insects can also reduce The number of application times, thereby reducing labor costs
.
If the blending is unreasonable, it can be dangerous.
In the light of the case, there is no drug effect, and in the severe case, it will cause phytotoxicity
.
Pesticide mixing order The mixing order of pesticides should be accurate.
The mixing order of foliar fertilizer and pesticides is usually: micro-fertilizer, water-soluble fertilizer, wettable powder, water dispersible granules, suspension, microemulsion, water emulsion, water, emulsifiable concentrate Add them one by one (in principle, no more than three pesticides should be mixed).
Stir and mix thoroughly for each addition, and then add the next one
.
Add water first and then add the medicine.
When performing the second dilution and mixing, it is recommended to add half a bucket of water to the sprayer first, and mix well after adding the first pesticide
.
Then, use a plastic bottle to dilute the remaining pesticides, pour them into a sprayer after the dilution, and mix them, and so on (if you want the medicine to work well, don't be lazy)
.
Regardless of what kind of medicine is mixed, it should be noted that "prepared for immediate use, not long-term release"
.
Although the medicinal solution does not respond when it is just prepared, it does not mean that it can be left for a long time at will, otherwise it will easily cause a slow reaction and gradually reduce the efficacy of the drug
.
Principles of Pesticide Mixing ● Mixing pesticides with different poisoning mechanisms: Mixing pesticides with different mechanisms of action can improve the control effect and delay the development of insect resistance
.
● Pesticides with different toxic effects: mixed insecticides have contact killing, stomach poisoning, fumigation, systemic inhalation, etc.
, and fungicides have protective, therapeutic, and systemic action methods.
If these agents with different control effects are mixed, They can complement each other and produce good control effects
.
● Mixing insecticides acting on different insect states: Mixing insecticides acting on different insect states can kill all kinds of insect pests in the field, killing the insects thoroughly, thereby improving the control effect
.
● Mixed use of pesticides with different time-effects: some types of pesticides have good quick-acting control effects, but have a short duration; some quick-acting control effects are poor, but have a long action time
.
The mixed use of such pesticides not only has a good control effect after application, but also has a long-term control effect.

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● Mixed use with synergist: Although synergist has no direct toxic effect on pests, it can improve the control effect when mixed with pesticide
.
● Mixed use of pesticides acting on different pests and diseases: When several pests and diseases occur at the same time, using this method can reduce the number of sprays, reduce working hours, and improve efficacy
.
Precautions for the mixed use of pesticides Although there are many benefits to mixed use of pesticides, it is important to avoid random mixing
.
Unreasonable mixing is not only useless, but also has the opposite effect
.
Pay attention to the following points when mixing pesticides
.
● does not change the physical properties i.
e.
, after mixing the oil slick, flocculation, precipitation or discoloration, nor fever, bubbles and so on
.
If the same powder, or the same granule, fumigant, aerosol, generally can be mixed; between different dosage forms, such as wettable powder, emulsifiable concentrate, emulsion, suspension, water solvent and other liquids with water as the medium Agents should not be mixed arbitrarily
.
● Does not cause chemical changes, including many agents that cannot be mixed with alkaline or acidic pesticides.
Under alkaline conditions such as Bordeaux mixture and lime sulfur mixture, carbamate, pyrethroid insecticides, thiram, daisen ring, etc.
Dithiocarbamic acid fungicides are prone to hydrolysis or complex chemical changes, thereby destroying the original structure
.
Under acidic conditions, 2,4-D sodium salt, 2-methyl-4 chloride sodium salt, bisformamidine, etc.
will also decompose, thereby reducing the efficacy of the drug
.
In addition to acidity and alkalinity, many pesticides cannot be mixed with drugs containing metal ions
.
Dithiocarbamate fungicides, 2,4-D herbicides and copper preparations can be mixed to produce copper salts and reduce efficacy
.
Thiophanate-methyl and thiophanate-methyl can be complexed with copper ions and lose their activity
.
Remove copper preparations, other preparations containing heavy metal ions, such as iron, zinc, manganese, nickel and other preparations, should be particularly cautious when mixing
.
Lime sulfur mixture mixed with Bordeaux mixture can produce harmful copper sulfide and increase the content of soluble copper ions
.
Propan, butachlor, etc.
cannot be mixed with organophosphorus and carbamate insecticides, some chemical changes may cause phytotoxicity
.
● Pesticides with cross-resistance should not be mixed.
For example, the fungicide carbendazim and thiophanate-methyl have cross-resistance
.
Mixed use not only does not play a role in delaying the development of drug resistance of the bacteria, but will accelerate the generation of drug resistance, so it should not be mixed
.
● Biological pesticides cannot be mixed with fungicides.
Many pesticide fungicides are lethal to biological pesticides.
Therefore, microbial pesticides and fungicides cannot be mixed
.
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.