Phytopthora on Maple?

[DanVC]

Hi everyone,

 

Maple, relatively dry site, no larch or rhodo near, only tree affected out of a line of 5, no other evidence of decay etc.  Cant rotate image, sorry.y help appreciated.

[David Humphries]

Have you considered other pathogens like Armillaria?

 

 

 

 

.

[DanVC]

Hello David,

 

I've booked in a further inspection for the Autumn.  On this particular area no mycelium present but will re-inspect then. 

 

[David Humphries]

Looks to be a significant root girdle going on which may have an influence on the vitality of the vascular cambium on that section of the tree, which could pave the way for secondary infections.

 

might be worth excavating that area to look for rhizomorphs.

 

 

 

.

[DanVC]

Thanks David,

 

Very much appreciated.

[Tony Croft aka hamadryad]

I would tend toagree with David on this, Maplesare particularly prone to Armillaria, slight stress is enough if present, and it is always around, never very far away. Natures way of dealing with the unsuitable, not fit for the nieghbourhood.