EN
A response of plants grown in crop rotation to form of magnesium fertilizers (magnesium sulphate or dolomite), dose and frequency of application of dolomite were studied in the field experiment. It was shown, that fertilization of light soil with magnesium increased oat and spring barley yield. Both of tested magnesium fertilizers (magnesium sulphate and dolomite) in the same way influenced on yield level of investigated plants. Also, positive effects of applying magnesium fertilizers were increasing of magnesium, nitrogen and phosphorus in index phase, grain and straw.