The paper presents results of fi eld studies, examining the effects of application of different forms of nitrogen fertilizers and magnesium on the dynamics of dry matter accumulation in
the early growth stages of two hybrid types of maize. The experiment determined dry matter yield at the 5–6 leaf stage, absolute growth rate (AGR) of dry matter, macronutrient contents
and their uptake. It was shown that the type of nitrogen fertilizer and the dose of magnesium do not signifi cantly differentiate the dynamics of the early growth in maize expressed by the amount of dry matter and absolute growth rate for dry matter. It was found that the stay-green cultivar ES Paroli had a signifi cantly higher dry matter yield at the 5–6 leaf stage than the conventional cv. ES Palazzo.