As we all know, water can be classified into hard water and soft water. Hard water typically comes from sources like wells, salty water, or seawater, and it contains higher levels of minerals such as calcium and magnesium. The hardness of hard water is generally between 18 to 20 degrees. When this type of water is used to dilute pesticides, the calcium and magnesium ions can interfere with the performance of wettable powders by reducing their suspension ability. Additionally, these minerals may react with emulsifiers in emulsifiable concentrates, forming insoluble precipitates that destroy the emulsification process. This not only lowers the effectiveness of the pesticide but can also lead to plant damage or phytotoxicity. On the other hand, soft water, such as river water or lake water, has a much lower concentration of calcium and magnesium, with a hardness of around 7.5 degrees. Because of its lower mineral content, soft water does not negatively affect the formulation of pesticides, ensuring better performance and fewer risks to crops. It's important for farmers and agricultural workers to understand the difference between hard and soft water when preparing pesticide solutions to maximize effectiveness and minimize potential harm to plants.
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