What killed this Oak

[Gollum]

This oak went over today.

any views on the cause,

it did have Inonotus Dryadeus a few years ago.

 

 

 

 

[Gollum]

 

[Tony Croft aka hamadryad]

armillaria on a weakened tree

[Tony Croft aka hamadryad]

this photo shows lots of similarities to extremely active Armillaria (mellea probably) dryadeus tends not to have so much mycelium, and generaly there is more coning at the butt, whereas this is confined to the smaller roots and is at its most intense on the outer layers as opossed to inner and or undersides.

 

IMO of course, armillaria is certainly the key player here and is very capable on weakend oaks.

 

[Gollum]

Hello Tony.

I agree with armillaria.

There may be something else.

 

By the way do you have a special alert to tree health threads.

can't believe the speed of the response

[JonnyVine]

Hi Gollum, would you be so kind as to take some more pics when you start to cut it up? One just above the butt would be nice

[Gollum]

this photo shows lots of similarities to extremely active Armillaria (mellea probably) dryadeus tends not to have so much mycelium, and generaly there is more coning at the butt, whereas this is confined to the smaller roots and is at its most intense on the outer layers as opossed to inner and or undersides.

 

IMO of course, armillaria is certainly the key player here and is very capable on weakend oaks.

 

[ATTACH]87001[/ATTACH]

 

This is dryadeus, still quite a bit of mycelium.

But there is more of a uniform failure

 

[Gollum]

Hi Gollum, would you be so kind as to take some more pics when you start to cut it up? One just above the butt would be nice

 

No problem.

was going to anyway

will post once done.

I will count the rings and measure the stem circumference

[Tony Croft aka hamadryad]

This is dryadeus, still quite a bit of mycelium.

But there is more of a uniform failure

 

 

 

yes, thats more what I would look for in Inonotus failures, the cone in the butt is there as are the remnants of the upper portions of the root still in the ground where they would be.

 

this wouldnt happen if the tree was vital, takes a lot to enable dryadeus to get this bad.

[Tony Croft aka hamadryad]

 

By the way do you have a special alert to tree health threads.

can't believe the speed of the response

 

I have a sixth sense as to when these things are posted! lol

 

my computer is rigged to go BING whenever key words are posted!