Overexposed beech with extreme sun scald

[Fungus]

Documentation on an about 70 years old beech with extreme sun scald and loss of bark is presented. The beech is standing beside a busy road. Until spring last year it was protected against sunlight overexposure by two Tilia's, which were pollarded heavily March 2010, standing opposite to the south side of the beech. This year about half of the bark fell off after the dead cambium was decomposed by the mycelium of Chondrostereum purpureum, which FB's are all over the bark of the tree trunk.

Photo 1 : shows the beech opposite to both pollarded Tilia's.

Photo 2 : shows the south side of the beech facing the Tilia's.

Photo 3/4/5/6 : show the patches of bark coming off the trunk.

Photo 7/8/9 : show the patches of bark falling from the major branches of the crown.

Photo 10 : shows the FB's of Chondrostereum purpureum.

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[David Goss]

wow thats a bit of serious sunburn!

[treeseer]

Excellent images; thanks! That's very extreme and late to start a pollard; we would call it topping over here in the usa. Would you say the pathogen is primary or secondary, and did it come up from the soil, or via airborne spores?

[sean freeman]

Have to agree that is not what I would consider to be a pollard...The response on the beech is very dramatic.

[Tony Croft aka hamadryad]

The tree worker responsible for this needs to be hung from these corpses IMO

 

that is NOT how we bring a beech into a pollard cycle!

 

davids right though.

 

thanks for posting gerrit, never seen it (fortunatley) in so extreme a sample!

[RobArb]

they where limes weren't they? Tilia, Gerrit mentioned

 

I best not say any more we may get told off by David again:001_rolleyes:

[David Humphries]

To be fair fellas, the thread is about sudden constant exposure to light & not specifically about what constitutes a pollard.

 

too many threads on here around that particular point already

 

Feel free & search & knock yourselves out

 

Lets try and keep this one on topic

 

thanks

 

 

David

[Fungus]

Would you say the pathogen is primary or secondary, and did it come up from the soil, or via airborne spores?

 

Guy,

In this case, Chondrostereum purpureaum is not a pathogen, but a (secundary) saprotrophic and the infection took place via everywhere and ever present airborn spores.

Edited August 7, 2011 by Fungus

[Fungus]

In this case, Chondrostereum purpureaum is not a pathogen, but a (secundary) saprotrophic and the infection took place via everywhere and ever present airborn spores.

 

Correcting and completing : Chondrostereum purpureum (without the a), a species of which the mycelium is only a pathogen in Prunus and Sorbus because of causing silver-leave disease.

Edited August 8, 2011 by Fungus