SULPHATE SALTS OF POTASSIUM, MAGNESIUM, CALCIUM, AMMONIUM - ON THE BENEFITS AND HARMS Many mineral fertilizers contain sulfur, as evidenced by their name - sulfate. Is this element harmful to plants? Maybe you should not abuse the sulfate salts of potassium, magnesium, calcium, ammonium? © Author: Innokenty Mstislavovich LEONOVICH Experts call sulfur a locomotive that brings plants the most important for ...