Supplementary two-component fertilizer (potassium, sulphur) , chlorine- and salt-free. Potassium and sulphur are easily available to plant. It is recommended as a supplement in nutrition of fruits, vegetables, grapes and flowers. It is ideal for all chlorine-sensitive plants, especially fruits and tobacco. It increases resistance to stress and accelerates growth and development of crops. It improves quality of final product and storage ability.