THE EFFECT OF IRON ІІ SULPHATE MELIORANT ON A YIELD OF BARLEY IN CONDITIONS OF TECHOGENICALLY POLLUTED SOIL OF DONBAS
The high rates of iron ІІ sulphate meliorant substantially reduce a yield of barley and is does not depend on the application of organic fertilizers. A dose of 300 kg/ha of this a meliorant increases a yield of barley to 2.1 t/ha. When iron sulfates is brought into the soil in conditions of moisturizing and oxygen presence, the colloids of amorphous iron hydroxide are formed and then crystallize on mineral and organic colloids, soil particles. It also changes the distribution of heavy metals absorbed in soil.