Besides the basic elements N and P, also K is also crucial for every cultivation. Potassium regulates the water household and prompts the blooming. Potassium also plays an important role in the forming of cells, the osmoses regulation and the carbohydrate household. It is also important for the opening and closing of the stomata, which enable the drainage of excessive heat. A deficiency of potassium manifests itself when the plant does not open the stomata sufficiently for vaporization in order to cool down. This results into the development of chlorosis at the rims of the leaves which develops into necrosis (death) in a later stage.

BN K 20 % is free of chlorides, works very fast, and most importantly: it is clean and very economic!