SOP is an important source of Potash, a quality nutrient for production of crops, especially fruits and vegetables. FFC SOP contains 50% K2O in addition to 18% sulfur, which is an important nutrient especially for oil seed crops because of its role in increasing the oil contents. It has also an additional advantage of ameliorating effect on salt-affected soils. Sulfur also helps in containing spread of fungal or other soil borne diseases. Potash is an important nutrient for activation of enzyme