Nieuwenhove, C.V.Merckx, R.Holm, L.V.Vlassak, K.2015-10-262015-10-262001Biol Fertil Soils, 33:p.25-32https://dl-ifs.nsf.gov.lk/handle/1/744Dinitrogen fixation activity of Azorhizobium caulinodans in the rice (Oryza sativa L) rhizosphere assessed by nitrogen balance and nitrogen-15 dilution methodsArticle