Nwanze PIAmeh JBUmoh VJ2014-04-292014-04-292005-11African Journal of Biotechnology Vol.: 4, No.: 11, November 2005 [Page 1285-1289]http://hdl.handle.net/123456789/672Psathyrella atroumbonata, an indigenous mushroom species, was cultured on six different media that were inoculated separately with three different grain spawns and amended with six different oils at five different rates. The results revealed that the interaction of the various oils with the different culture media produced a highly significant effect (p<0.01) on the dry weights and stipe and pileus diameters of P. atroumbonata. The widest mean stipe diameters were produced by the interaction of coconut x animal bedding and rice as well as butterfat x sawdust media. Both the heaviest mean dry weight and widest pileus diameters were induced by coconut x animal bedding and rice medium.enPsathyrella atroumbonatasupplemented mediumoil typebiomass productionArticle