KRUPPA, J.; ZSOM, E. Impact of potassium fertilizers with different active ingredients and dosages on potato yield in experiments in the Nyírség region. International Journal of Horticultural Science, [S. l.], v. 12, n. 4, p. 71–74., 2006. DOI: 10.31421/IJHS/12/4/682. Disponível em: https://ojs.lib.unideb.hu/IJHS/article/view/682. Acesso em: 5 jul. 2022.