Surányi, S. and Izsáki, Z. 2016. Effect of N, P and K fertilisers and their interactions in a long-term experiment on winter barley (Hordeum vulgare L.). Acta Agraria Debreceniensis. 70 (Oct. 2016), 87–92. DOI:https://doi.org/10.34101/actaagrar/70/1823.