2083 trees in 91 sample plots on four trial areas (24 ha) were examined for bark stripping and decay. Only 25 % of trees showed no injury. Of the injured trees, 73 % showed some degree of decay, 10 % discoloration and 17 % neither decay nor discoloration. Of the wood destroying fungi isolated Fomes annosus was dominant and appeared to be the most important and widespread of the wound inhabiting fungi in the test area. Besides the Basidiomycetes a considerable number of other fungi was isolated. The most frequent was Cylindrocarpon cylindroides var. tenue.