EN
A field trial was carried out to determine the infection of 19 breeds and 1 cultivar of naked oat with the fungi Erysiphe graminis, Puccinia coronata and Drechslera avenae. The infection with two former species of fungi varied apparently between oat breeds. The degree of infestation had no effect on oat yields. The seeds of oat were used to isolate 25 saprophytic and pathogenic species of fungi. Among the former, Altenaria alternata and Epicoccum purpurascens were dominating. Among the pathogenic species, the most common were fungi belonging to the genus Fusarium, responsible of mycotoxins.