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Abstract
Isolation trials from the rotted crowns and stems of Egyptian clover plants were carried out. The isolated fungi were purified and identified as Alternaria spp., Fusarium spp., F.solani, Macrophomina phaseolina, Pythium spp., Rhizoctonia solani, Sclerotinia sclerotiorum, S.trifoliorum, Trichoderma album, T.harzianum and T.viride. No apparent infection by crown and stem rot diseases was observed on clover plants during October, November and May then the infection began to appear from December to April of the next year. The highest infection by crown rot occures during January and by stem rot during February. Pathogenicity test by soil infestation and stem inoculation revealed that all the tested fungi were able to infect clover plants except Trichoderma spp. S. sclerotiorum infected all the plants that belong to family Fabaceae, i.e. alfaalfa, bean, chick pea, Egyptian clover, faba bean, etc{u2026}as well as lettuce, safflower cantaloupe, cucumber, and potato and failed to infect barley and wheat