Potassium (K) is an essential mineral nutrient for plant growth, vital for several physiological functions, including the activation of enzymes and the regulation of osmotic pressure. Although potassium (K) is not a component of organic molecules or plant structures, it plays a crucial role in numerous biochemical and physiological processes that are vital for plant growth, productivity, quality and stress tolerance. A deficiency in potassium can result in stunted growth, lower yields, and weakened plant health. Understanding soil-plant K dynamics is vital for sustainable agriculture, considering factors like soil type and pH. Effective management practices, including K fertilization, are necessary to maintain optimal K levels. Intensive farming increases the demand and contributes to K deficiency. This article underscores the importance of comprehensive knowledge for assessing soil K status and advocates for strategic management to enhance crop production and quality in K deficient conditions.