Auffallende Schadfaktoren an Waldbäumen im Jahr 2005

Wien

2006

S. 6-7

2 Abb.

Artikel aus einer ZeitschriftUnselbständiges Werk

200132035

Reports on outstanding damaging agents on forest trees in Austria are given for the year 2005. Dieback of young Fraxinus excelsior probably as a consequence of spring frost in 2005, with the contribution of microfungi Gloeosporidiella turgida, Diplodia mutila and Phomopsis scobina, is reported from Lower Austria, Upper Austria and Salzburg. Decline of older Fraxinus excelsior suffering from sludge deposition up to one meter after the flood in 2002, with ash bark beetles contributing to the decline, is reported from the riparian forests of the Danube in Lower Austria. Scleroderris-disease (Gremmeniella abietina) and Diplodia-dieback (Sphaeropsis sapinea), both related to hail wounds are reported from a few sites in Tyrol and Vorarlberg. In Christmas tree plantations Kabatina abietis has become an increasing problem in some sites in Lower Austria. Thysanophora penicillioides, first detected as a needle cast fungus of Nordmanns fir in Austria in 2004, is probably widespread but rarely changes from saprophytic to parasitic occurrence.