Aim of this study was testing of maize and barley response to Fertdolomite (24.0% CaO + 16.0% MgO + 3.0% N + 2.5% P2O5 + 3.0% K20) application (crop rotation: maize 2008 - barley 2009 - maize 2010). Grain yield was increased by 12% (maize 2010) and 22% (barley). Mean concentrations 0.347% P, 2.44% K, 0.492% Ca and 0.176% Mg (leaves), 0.294% P, 0.334% K, 0.006% Ca and 0.093% Mg (grain) were found and due to Fertdolomite they were increased by 12% (P), 8% (K) and 19% (Ca) in leaves and by 14% (P) in grain.
