A novel Ulocladium atrum CNU 9055 is provided to be able to control various gray mold and various plant fungal diseases in environment-friendly method. The Ulocladium atrum CNU 9055 showing controlling activity against plant fungal diseases is deposited as a deposit number of KCTC 10796BP. The compositions for controlling plant fungal diseases comprises conidium produced by culturing the Ulocladium atrum CNU 9055 or a culture solution extract prepared by culturing the Ulocladium atrum CNU 9055 as an effective ingredient.
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