Wood rot

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Wood damaged by brown rot (above) and white rot (below)

Wood rot is a generic term for different types of damage to wood of living, dying or dead trees by fungi , which is mainly used in forestry and in the field of wood protection in construction .

With regard to timber, one speaks of wood pests in the negative view and of deadwood degradation in the positive view .

Forms of wood rot

White rot on birch wood

Depending on the degraded wood substance, a distinction is made between different forms of wood rot - each with several specific types of fungus as rot causative agents:

  • Which also Korrosionsfäule called white rot is first lignin degraded; typical is the fraying of the wood.
Brown rot on oak
  • Which also Destruktionsfäule called brown rot are primarily cellulose degraded among others polysaccharides; breaking the cube is typical .
  • With simultaneous rot , both main components of the wood are attacked at the same time.

In the case of soft rot , cellulose is also primarily broken down, but when wet, the greasy surface is typical, the cube-shaped break is finer.

The naturally progressive degradation of wood by fungi can take place in parallel or successively due to different types of fungus and different forms of rot.

The term red rot is unspecific with regard to the degraded wood substance and refers to red-brown discoloration of the wood.

In addition, different forms of damage occurrence - regardless of the degraded wood substance - are conceptually differentiated:

  • Trunk rot refers to damage that affects large areas of a trunk on a living tree.
  • Stick rot is limited to the lower trunk areas.
  • Wound rot means rot that occurs on living trees over z. B. penetrates wounds caused by back damage .
  • As storage decay (deprecated still wet - and dry rot divided) is referred to lagerndem or already verbautem wood rot.
  • As Hausfäule Fäulearten be referred whose pathogens infect preferably wood in buildings is installed (z. B. Serpula lacrymans ).

swell

  • Peter Schütt , Hans J. Schuck, Bernd Stimm: Lexicon of forest botany . Morphology, pathology, ecology and systematics of important tree and shrub species. ecomed. Landsberg / Lech. 1992. ISBN 3-609-65800-2
  • Tobias Huckfeldt, Olaf Schmidt: House rot and timber fungi. Verlag Rudolf Müller, Cologne 2006, ISBN 3-481-02142-9 , 377 pp.
  • Uwe Wild: Lexicon of wood protection. BAULINO Verlag, Waldshut 2009, ISBN 978-3-938537-07-7 , 500 pp.