An in-depth article by Nutrient Technologies Agronomist, Tom Gerecke….
When asked about the function of Potassium (K) in plants, many Crop Advisors respond, “plant water relations.” Potassium does much more with its regulation of stomatal opening and closing than simply help a plant regulate its water use. The open stomates are necessary for CO2 to enter for photosynthesis to occur. Sugars from photosynthesis are necessary for shoot growth, root growth, and yield. Expanding leaves on growing shoots drive water uptake with essential potassium contained within. Active roots take up water for cell expansion and sugar production.