Why Do Plants Need Potassium

Potassium (K) is the most abundant inorganic cation, and it is important for ensuring optimal plant growth (White and Karley, 2010). K is an activator of dozens of important enzymes, such as protein synthesis, sugar transport, N and C metabolism, and photosynthesis.

What happens if plants don't get enough potassium?

WHAT HAPPENS WHEN PLANTS DON’T GET ENOUGH POTASSIUM: Plants lacking in K do not have enough energy to properly grow, their roots are not well formed, and they have weak stems and stalks. The edges of older plant leaves appear “burned”, as K deficient plants cannot regulate and use water efficiently.

How do you know if a plant needs potassium?

Typical symptoms of potassium deficiency in plants include brown scorching and curling of leaf tips as well as chlorosis (yellowing) between leaf veins. Purple spots may also appear on the leaf undersides. Plant growth, root development, and seed and fruit development are usually reduced in potassium-deficient plants.