NPK 20-20-20 FORMULATION - AN OVERVIEW

The key inorganic supply of potassium for use in NPK fertilizers is potash. Like phosphate rock, potash is mined all over the planet and processed right into a extra refined product. Potassium may originate from potassium sulfate, langbeinite, and granite dust.Why do they promote products with diverse NPK ratios? Are they hoping we’ll purchase a