Recently, the author discovered that some farmers' friends are accustomed to diluting pesticides with well water, and think that well water is “clean†and can improve the control effect. In fact, this is completely a misunderstanding. The well water contains a lot of calcium and magnesium substances. Diluting the pesticide with well water will destroy the emulsification and suspension properties of the pesticide, so that the efficacy will be reduced or even completely lost. This will not only affect the control effect, but also cause phytotoxicity to crops.
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