Potassium and 60 enzymes

60 enzymes within a plant system need potassium (K).

By the way, K is one of the essential elements in plant growth, in line with nitrogen (N) and phosporus (P). All three of them are highly availble in human urine.

Source: https://www.sciencedirect.com/science/article/abs/pii/S0168165620302820