Potassium – protects against frost and accelerates wound healing. It inhibits the development of diseases such as gray mold, rust, bacterial carcinoma, rhizoctonia, powdery mildew, reticulate retinoblastoma, gangrenous gangrene.
Protection Very common and easy available are chemicals agents that defend harmful organisms. Unfortunately we often overdo it with the amount of chemicals used which is very bad for plants.
They are very important for breeding animals. In the world they occupy 25% of farmland. Pastures are the cheapest source of food for animals.