BN Potassium contains 20% K2O. In addition to the basic elements N and P, K (potassium) is also crucial for every crop.

Potassium plays an important role in cell formation, regulation of osmosis and carbohydrate storage. In addition, potassium is important for the opening and closing of stomata, which allow the drainage of excess heat.

A potassium deficiency manifests itself when the plant does not open the stomata sufficiently for vaporization in order to cool. This results in the development of chlorosis on the edges of the leaves which develops into necrosis (death) at a later stage.

In case of an excess of potassium the plant is slowed down. in its development and subsequently dark in turn. An excess also hinders the absorption of other cations (Ca and Mg), which is caused by antagonistic effects.