Potash accounts for 90% of all the potassium applied to farmland soil in the U.S. in the form of Muriate of Potash (MOP). Potash ore is mined from a half mile beneath the Earth’s surface with ...

Potash and phosphate are often tied together. After all, both are used to produce fertilizers, which are becoming increasingly important as demand for food grows ... and muriate of potash (MOP).