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Potassium: Reactions
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Potassium is an important mineral that contributes to good health and well-being. Potassium is found in high concentrates in fresh fruits and vegetables. The majority of potassium is intracellular and functions in relation to this location. Potassium maintains electrolyte and pH balance; influences the movement of smooth, skeletal and cardiac muscles; and plays a role in the synthesis of tissue and carbohydrates. Potassium is involved in nerve impulse transmission and a variety of enzyme reactions. Potassium works either alone or with other nutrients to support many physiological activities.
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Potassium (K) is an essential nutrient for plant growth. Because large amounts are absorbed from the root zone in the production of most agronomic crops, it is classified as a macronutrient. Minnesota soils can supply some K for crop production, but when the supply from the soil is not adequate, K must be supplied in a fertilizer program. This publication provides information important to the basic understanding of K nutrition of plants, its reaction in soils, its function in plants, and its role in efficient crop production.
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Potassium is very soft and easily cut. The resulting surface is bright and shiny. However, this surface soon tarnishes because of reaction with oxygen and moisture from the air. If potassium is burned in air, the result is mainly formation of orange potassium superoxide, KO2.
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