Über die Infektion von Fichtenwurzeln (Picea abies Karst.) durch Forties annosus (Fr.) Cke.

Infection of roots of spruce (Picea abies Karst.) by Fomes annosus present in the soil. 108 roots of spruce were severed at approximately 50 cm from the base of the tree. The resulting wounds were invaded by Fomes annosus originating as mycelium or basidiospores in the soil. Infection rate on limestone soils was 41 %, on other soils 10 %. Odontia bicolor also grew into spruce roots from the soil.