In what form is potassium in fertilizers typically listed?

In fertilizers, potassium is typically represented by the letter K, which comes from its Latin name, Kalium. This designation is used universally in the agricultural and horticultural industries to indicate the presence of potassium in a fertilizer product. Potassium is one of the three primary nutrients essential for plant growth, along with nitrogen and phosphorus. When reading fertilizer labels, the amount of potassium is often shown as a percentage, contributed to the overall nutrient content of the fertilizer.

Understanding the significance of potassium is crucial for proper plant health, as it plays a vital role in various physiological processes, including water regulation, enzyme activation, and photosynthesis, which ultimately affect plant growth and yield.