Potassium nitrate is an ideal fertilizer in the sense of it comprising the two nutrient-salts, potassium (K+ ) and nitrate (NO3 - ), taken up in greatest amounts by the majority of plants and just about every crop grown. The nitrate – potassium combination per se holds the special advantage of increased potassium uptake efficiency due to the high root uptake affinity (uptake willingness) of nitrate and the need for plants to balance themselves by additionally taking up a cationic salt, potassium being an ideal candidate. Increased efficiency of potassium nitrate (KNO3 ) means more potassium uptake for the amount of potassium supplied in using potassium nitrate as opposed to other potassium fertilizers for the supply of potassium.