For the majority of farmers, pesticides and fertilizers are essential agricultural products for crop production and production. Due to the wide variety of pests and diseases, in order to improve the control effect and reduce the number of artificial inputs and use of sprayed pesticides, we have basically become accustomed to the use of various types of pesticides or mixed with foliar fertilizers , plant conditioners and other items.
For some pesticides, reasonable mixing or compounding can prolong the efficacy period, delay the resistance of pests and diseases, and improve the control effect. However, many pesticides have different mechanisms of action due to different pH or insecticidal action. It is suitable for mixing and mixing. After mixing, it will reduce or neutralize the effect of the drug, lose the control effect, and lose the serious damage to the crop. Especially for those who use the pesticide formula, if you use it carelessly, you may even Cause crops to be produced!
A few days ago, a peasant friend said in a private letter that he hoped to know some methods for the correct use of pesticides. Then, today, let's talk about the things that need to be paid attention to when mixing pesticides, and share with you some small formulas that can not mix and match common pesticides and improve the efficacy. For your reference.
Matters needing attention when using pesticides
1. The order of addition of pesticides and foliar fertilizers
Micro-fertilizer → water-soluble fertilizer → wettable powder → water-dispersible granules → suspending agent → microemulsion → water emulsion → water agent → emulsifiable concentrate.
2. Types of fertilizers that cannot be mixed with pesticides
Tobuzin, Jinggangmycin, Yeqisan, Kuweiwei, etc. can not be mixed with ammonium bicarbonate, ammonia water, grass ash, lime nitrogen, etc.; alkaline pesticides such as stone sulfur mixture, Bordeaux mixture and rosin tablet can not be combined with calcium phosphate, Fertilizers such as superphosphate, ammonium sulfate, ammonium nitrate, and ammonium chloride are used in combination, and arsenic-containing pesticides cannot be mixed with fertilizers such as sodium salts and potassium salts.
3, the principle of pesticide mixing and liquid preparation
Generally speaking, most pesticides will chemically or physically react after blending. When using pesticides, it is best not to add more than three pesticides in sequence, and they should be fully stirred after each pesticide is added. After mixing and preparing the liquid, observe no obvious turbidity, discoloration, sedimentation, bubbling, flocculation, etc., and then add the next pesticide to the same mixture.
Pesticide can not be mixed with pesticides
1, mix and match is prone to phytotoxicity
The anti-bacterial powder can not be mixed with the parathion emulsion; the enemy and the herbicide can not be mixed with the organophosphate insecticide, the fungicide , the carbamate killing agent, and can not be used one after another; the enemy bacteria, more It must not be mixed with emulsion pesticides; the manganese-free manganese equivalent drug can not be mixed with Daisen zinc, Daisen ring, etc.; enemy kill can not be mixed with organophosphorus pesticides; benzimidazole pesticides can not be mixed with copper-containing pesticides; Bordeaux The liquid should not be mixed with the stone sulphur mixture; the organophosphorus pesticide should not be mixed with the rosin mixture.
2, mix and match is easy to neutralize or lose efficacy
Acidic pesticides such as copper sulfate, sodium fluorosilicate, chalk, and superphosphate cannot be mixed with alkaline fertilizers such as rosin mixture, stone sulphur, Bordeaux, aluminum arsenate, soap, lime, and lime nitrogen. When acid-alkaline pesticides are mixed together, they will decompose and destroy, reduce the efficacy and even cause phytotoxicity; in addition, most organic phosphorus insecticides such as dimethoate, chlorpyrifos, malathion, ammonium phosphate and the like , validamycin, blasticidin-like portion of the micro biological pesticides, can not be mixed and matched with alkaline pesticides.
3, different types of pesticides mix and match
Water-soluble drugs such as wettable powders, emulsifiable concentrates, concentrated emulsions, suspensions, and aqueous solvents are generally not used in combination; and granules, fumigants, and aerosols are mostly used in combination;
4, heavy metal drugs mix and match
Dithiocarbamate fungicides, 24-D herbicides , thiophanate-methyl, thiophanate-like drugs, etc., can not be mixed with copper ions, copper preparations, and cautious with iron, zinc, manganese, nickel Mix the preparations and other preparations.
5, other non-mixable drugs
Carbendazim cannot be mixed with methyl ketone, and microbial pesticides should not be mixed with bactericide drugs.
Pesticide mix and enhance the type of efficacy
1. Pesticide mix and match to enhance disease prevention effect
The combination of captan and Bacillus subtilis can significantly control the crop continuous cropping disease; the combination of chlorpyrifos and well wax bud can prevent the blight and blight of melon crops; the mixture of flusilazole and organic copper can Accelerate the healing speed of melons; the mixture of pyraclostrobin and thiafuramide can prolong the efficacy period of citrus smut; phleomycin can be mixed with carbendazim or methyl sulfide or carbaryl to control a variety of crops. Root disease; the combination of conventional agents for controlling downy mildew and epidemic diseases and organic copper preparations can improve the efficacy of more than 50%; the organic copper preparation can be effectively mixed with benzalkonium chloride and iodine solution to effectively control cucumber target spot disease; Mixing with iprodione, preventing leaf spot of leafy vegetables and anthracnose has a significant effect.
2, pesticide mix and enhance the pest control effect
The combination of avermectin and 44% propanol can effectively control rice aphids; the combination of avidin and tebufenap can prolong the control effect of noctuidae pests; and the combination of chlorpyrifos and chlorpyrifos can effectively prevent and cure Rice leafhopper and fruit tree borer; spirotetramat and avermectin mix and match, have a good effect in controlling pear hibiscus;
The combination of avermectin and spirotetramat has a significant effect on the control of whitefly, aphids and thrips; the combination of avidin and chlorfenapyr has the effect of insecticide double killing; spirotetraethyl ester and buprofezin or chlorpyrifos Mix and match, it is safe and efficient to control scale insects;
The combination of insecticide and chlorpyrifos can greatly improve the efficacy of ginger and heartworm; the combination of å“’èž¨çµ and thiamethoxam to prevent and control beetles; the combination of aver and chlorfenapyr can prevent and control leaf miner pests; thiamethoxam and thiazide The combination of fenthrin and roots has a significant effect on the control of mantle and mites;
Avi can be combined with scorpion or triazolium tin and biphenyl chloride to control red spiders and white spiders; chlorantraniliprole and chlorpyrifos can effectively control noctuids; in addition, oxyfluorfen and two The combination of valproate has a significant effect on killing young grass, controlling broadleaf and grass.
Precautions
When using pesticides, be sure to use them in strict accordance with the instructions for use. Do not blindly increase the dosage and concentration. Do not mix and use the formula to avoid unnecessary losses.
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