How to dilute pesticides is more scientific
I. Dilution Methods of Powdered Pesticides Generally, powdered pesticides do not need to be diluted when they are used. However, when the crop plants are tall and grow dense, a certain amount of filler can be added in order to spray the limited agent uniformly on the surface of the crop. The powdered pesticide is mixed with stirring, so that it is repeatedly added and continuously mixed until the desired filler is completely added. During the dilution process, safety precautions must be taken to prevent poisoning.
Second, the wettable powder dilution method is usually taken two-step preparation method, that is, first with a small amount of water formulated into a relatively thick mother liquor, fully stirred, and then poured into the syrup bucket for the final dilution. Because if the quality of the WP is poor, the particles tend to agglomerate to form larger granules. If the granules are directly poured into human medicine buckets, the coarse granules will not be fully dispersed and they will immediately sink to the bottom of the water; difficult. The problem to be noted in the two-step preparation method is that the amount of water used is equal to the total amount of water used, otherwise it will affect the concentration of the liquid to be formulated.
Third, the liquid pesticide dilution method should be based on the amount of liquid dilution and the size of the drug activity. The amount of liquid used for prevention and control can be directly diluted, ie, the ready-to-use clean water is filled in the ready-made pharmaceutical container, and then the quantitative medicine is slowly poured into water and gently stirred with a small wooden stick to spray it. use. If a large amount of liquid medicine needs to be prepared in a large area, this requires a two-step preparation method. The specific method is to dilute the pesticide with a small amount of water and then dilute the prepared mother liquor. The proportion is poured into ready water and stirred until it is even.
Fourth, granules pesticide dilution method The granule pesticide its active ingredient is low, mostly in more than 5%, so the granules can be diluted with the filler before use. The dry uniform small soil particles or same-sex chemical fertilizers can be used as the filler, and the granules and the filler can be mixed well when used. However, in the selection of chemical fertilizers as fillers, attention must be paid to the acidity and alkalinity of pesticides and chemical fertilizers (ie, the acidity and alkalinity of both must be the same), so as to avoid the decomposition failure of pesticides after mixing.
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