Many friends of farmers in the control crop pests, in order to facilitate easy and often will mix together several pesticides. Although the mixed use of pesticides has its advantages, if blindly mixed and used indiscriminately, the pesticides will not only have the effect of preventing and curing diseases, but also easily cause crop damage, increase the cost of medication, and cause human and animal casualties. Therefore, the following principles must be followed when mixing pesticides:
It is important to maintain the chemical properties of each useful ingredient. Mix pesticides with chemical changes in their useful ingredients. First, pesticides that produce chemical reactions that cause phytotoxicity in crops cannot be mixed: for example, Bordeaux mixture and stone sulphur mixture cannot be mixed. Stone sulphur mixture and rosin mixture, organic mercury pesticides, heavy metal pesticides, etc. can not be mixed. Second, acid-alkaline pesticides cannot be mixed: common pesticides are classified into acidic, alkaline and neutral, and acid-alkaline pesticides cannot be mixed. The third is to improve the pesticides, amides and other structures of pesticides improperly mixed with alkaline pesticides, so as not to cause lipid or amide hydrolysis. Fourth, some sulphur-containing pesticide bactericides such as daisen zinc, thiram, etc. are improperly mixed with the insecticide trichlorfon and monocrotophos. The fifth is some ionic pesticides, which are extremely herbicides such as wild swallow, 2 methyl 4-chloramine salt, glyphosate, etc., when mixed, do not confirm the effect of landing and landing.
Do not destroy the pharmacological properties of the drug. When the two kinds of emulsifiable oils are mixed, the emulsification, evacuation and thickness of the protrusion can be improved. When the two wettable powders are mixed, the swell rate and the density and the performance of the bulge are still perfected. This is not only a condition for exerting efficacy, but also for preventing failure, reduction of efficacy or drug abuse due to physical property changes.
Make sure that there are no side effects such as phytotoxicity after mixing. For example, organophosphorus pesticides can't be mixed with enemy cockroaches.
To ensure the safety after mixing. After the pesticides are mixed, it is necessary to ensure that no toxins are added, and it is not only safe for humans and animals.
The mixing of pesticides should be correct. First, the mix between the varieties should be correct. For example, weeding weeds in soybean fields can be controlled by catching nets and covering grass alone. If the two are mixed, it is of course feasible from the point of view of the drug, but it does not increase efficiency, nor expands the scope of prevention and control, and there is no need to mix it. Second, the cost must be correct. Mixed individuals are less expensive than single use. For example, a new type of systemic fungicide with more money is used in combination with a lower-priced repairing fungicide, and it is more mixed with a pyrethroid pesticide and an organophosphorus pesticide.
Be familiar with the scope of application of compounding agents. It is necessary to know the application between the mixed pesticides and the application of the various ingredients in the single-agent application category. Read the instructions carefully before mixing the pesticides and do the miscibility experiment before mixing. Mixing pesticide varieties, Yangshuo, perfecting the farewell function method and treating the object of prevention and treatment, in order to reach the goal of expanding the prevention and control of pesticides after mixing and controlling the consequences. After the application of the mixture, the pesticide residue of agricultural and sideline products should be lower than the single agent. At the same time, the mixed use of pesticides should also reach the goal of landing cost. Mixed compound pesticides have their own characteristics in terms of application scope and consequences, so that the compounding has no meaning.
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