Potassium is vital to many plant processes. Potassium determines fruit size, leaf thickness, and stem strength. Potassium also plays a major role as a catalyst in the plant sap and transports carbohydrates from leaves to other parts of the plant, including the fruit. Crops which produce large amounts of sugars have an especially high requirement for potassium.
Potassium is required for numerous plant growth processes: enzyme activation, stomatal activity (water use), photosynthesis, transport of sugars, water and nutrient transport, protein synthesis and starch synthesis.
In general, Potassium helps to increase crop yield and improve crop quality because it increases root growth and improves drought resistance, and activates many enzyme systems.
Potassium can:
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