Balla Kovács, A. and Jakab, A. 2010. Impact of ammonium nitrate and Microbion UNC bacterial fertilizer on dry matter accumulation of ryegrass (Lolium perenne L.). Acta Agraria Debreceniensis. 38 (Nov. 2010), 35–39. DOI:https://doi.org/10.34101/actaagrar/38/2757.