The scientific method of pesticide dilution
The correct, reasonable and scientific method of dilution of pesticides is an important condition for saving funds, preventing waste, and ensuring efficacy. The dilution methods for various formulations of pesticides are described below so that farmers' friends can use them correctly when diluting pesticides. First, the dilution method of powder pesticides: General powder pesticides do not need to be diluted in use, but when the crop plants are tall and grow thick, in order to spray the limited agent evenly on the crop surface, can add a certain amount of filler, will be required The powdered pesticide is mixed into the agitation, 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: Usually also take a 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 not good, the granules tend to agglomerate to form larger granules. If the granules are directly poured into the syrup bucket, 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: According to 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 the ready water and the mixing is positive. IV. Dilution method of fruit granule pesticides: granule pesticides have lower active ingredients, most of which are above 5%. Therefore, granules can be diluted with the aid of fillers, and dry uniform small-sized soil particles or homogeneous chemicals can be used. Fertilizer is used as a filler, and as long as the granules and the filler are used, they can be fully mixed. However, in the selection of chemical fertilizers as fillers, attention must be paid to the acidity and alkalinity of pesticides and fertilizers to avoid decomposition of pesticides after mixing.
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