Diviš, Jiří; Bárta, Jan and Heřmanová, Veronika (2007) Nitrogenous substances in potato (Solanum tuberosum L.) tubers produced under organic and conventional crop management. 3rd QLIF Congress: Improving Sustainability in Organic and Low Input Food Production Systems, University of Hohenheim, Germany, March 20-23, 2007.