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Potassium plays a vital role in regulating plant water uptake and maintaining turgidity, which is essential for proper cell expansion and plant growth. It helps plants cope with water stress and improves their resistance to drought. Potassium availability in soil is influenced by soil texture and cation exchange capacity (CEC). Sandy soils tend to have lower potassium retention, making it more prone to leaching, while clayey soils with higher CEC can retain and supply potassium more effectively. While potassium is associated with improved plant health and stress tolerance, high potassium levels in soil do not guarantee increased disease resistance in plants. Disease resistance is influenced by various factors, including genetic traits, environmental conditions, and the presence of specific pathogens. Potassium alone cannot ensure disease resistance.
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