Scientific methods for diluting pesticides

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 the use, but when the crop plants are tall, dense growth, in order to spray the limited agent evenly on the crop surface, you can add a certain amount of filler (grass, etc.) ) Perform the dilution. When diluting, take a part of the filler, mix the required powder pesticide into the mixture, and mix it repeatedly until the required filler is added. In the process of dilution, complete protection measures must be taken to avoid A poisoning accident occurred. Second, the wettable powder dilution method: Usually also take two-step formulation, that is, first with a small amount of water formulated into a thicker "mother" for full agitation, 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 for prevention and control can be directly diluted, that is, the required clean water is contained in the prepared pharmaceutical container, and then the quantitative medicine is slowly poured into water and gently mixed with a small wooden stick to be used for spraying. If a large amount of liquid medicine needs to be prepared in a large area, this requires a two-step method. The specific method is: first use a small amount of water to dilute the pesticide into the mother liquor, and then prepare the mother liquor. According to the dilution ratio, enter the prepared fresh water and stir until it is even. Fourth, granules pesticide dilution method: granule pesticides its active ingredients are lower. Most of them are more than 5%. Therefore, granules can be diluted with the help of fillers, and dry uniform small-sized soil particles or same-sex chemical fertilizers can be used as fillers. When used, granules and fillers 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. China Agricultural Network Editor

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