Potassium Sulfate (K2SO4) is Suitable to be used for fruit trees orchards before planting or during winter service to feed all kinds of crops especially during fruit stage to increase fruit size and improving taste, firmness and shelf-life. Standard formula takes longer time to be completely dissolved in soil compared to soluble-SOP, which make potassium more available for plant for long time and increases K-use efficiency. Enhances tolerant of plants against environmental and biotic stresses. Rich in Sulfur, which is an important element for some oil crops such as onion and garlic and increases the availability of phosphorus and micro element to be used in soil.