The effects of teff straw (Eragrostis tett) or corn stalkrn(Zea mays) on cellulase and biomass production by Trichodermarnsp. BDCC-1, Penicillium sp. BDCC-2 and Cladosporium sp. BDCC-3rnwere studied and compared with those of cellulosic substrates.rnIn Trichoderma sp. both teff straw and corn stalk werernfound to be superior to filter paper for inducing B-GDase asrnwell as for improving fungal biomass production. CMCase andrnFPase productions were, however, lower on these substrates thanrnthey were on filter paper.rnIn Cladosporium sp. teff straw and corn stalk were foundrnto be better than CMC for inducing both CMCase and FPase.rnHowever, no B-GDase activity was detected when only thesernlignocellulosics were used in the media. It's biomassrnproduction was also relatively lower on these substrates asrncompared to that it produced on 1% CMC.rnPenicillium sp. produced relatively large amounts ofrnbiomass, CMCase, FPase and B-GDase on 2% corn stalk as comparedrnto those it produced on 2% CMC.rnLye- and 2% NaOH-pretreatments were generally effective inrnimproving biomass production in the test fungi. But theirrneffect on CMCase, FPase and B-GDase production was not similarrnfor the three fungi. There was, however, no significantrndifference between Lye- and 2% NaOH-pretreatment in theirrnperformance on biomass and cellulase production.rn65-80% of the polysaccharides of alkali-treated teff strawrnand corn stalk were hydrolysed to reducing sugars in 72 hoursrnusing culture filtrate of Trichoderma sp. BDCC-1 whichrnconsisted of 1.7 IU/ml of FPase. The hydrolysates were found tornsupport good growth of Candida utilis BDCC-25 (16.7-24.8mg dryrnwt./100ml) and Saccharomyces cerevisiae BDCC-24 (14.6-15.6mgrndry wt./100ml). The yields of yeast biomass produced on thesernhydrolysates were higher than those produced on D-glucosern(0.02%). It was, therefore, concluded that teff straw and cornrnstalk could provide cheap substrates for mold biomassrnproduction as well as for single-cell protein production ifrnthey are pretreated with Lye.