Can any one help with ident of these Bleeding cankers

[alhazzard25`]

Came across a few trees with what looks like bleeding cankers and was looking for any feed back to what they may be, sorry the pictures are not very good thanks

 

 

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[David Humphries]

Is it on birch?

 

It may be an infection by The mycelium of Armilaria in the region between the bark, phloem and cambium layers, as opposed to a bacterial canker.

 

 

 

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[Tony Croft aka hamadryad]

Is it on birch?

 

It may be an infection by The mycelium of Armilaria in the region between the bark, phloem and cambium layers, as opposed to a bacterial canker.

 

 

 

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I agree, could be beech too though, tis a northern aspect tree so that lichenised bark would be expected on beech or birch:thumbup1:

[likeitorlumpit]

I was looking at the tree and thinking young chestnut. Am I so far out:confused1:

[RobArb]

It's an alder, depending if it's here oop North. Phytophthora alni could be the culprit

[treeseer]

Would it make sense to look for mycelia and shoestrings, to confirm or deny Armillaria?

 

Not sure how much ID affects prognosis and esp. treatment...?

 

As for guessing I'll keep my ignorance to myself, in lieu of more data.

[daltontrees]

Give us a tree species please, OP.

 

Sure is looking like a Phytophthora so far, though.

[David Humphries]

Would it make sense to look for mycelia and shoestrings, to confirm or deny Armillaria?

 

Not sure how much ID affects prognosis and esp. treatment...?

 

As for guessing I'll keep my ignorance to myself, in lieu of more data.

 

 

Sure is looking like a Phytophthora so far, though.

 

My post doesn't imply that I would rule out Phytophthora, but through our own field studies the visual symptoms shown above could fall within the parameters of an Armillaria infection.

 

Below are shots we took from a 'bleeding' birch that had both the mycelium of Armillaria under the bark and also (not shown) evidence of rhizomorphs.

Bark was extracted using the circular chisel from an Arborsonic field kit.

 

This of course does not prove either way, that the subject specimen of this thread has either (or even both) of the aforementioned pathogens.

 

Just sharing our observations

 

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[sloth]

Very nice example of the mycelium under the bark

[treeseer]

was that white stuff slippery and stinky? fibrous and firm?

 

evidence of rhizomorphs- visual, or circumstantial? And where was this evidence, how far away?

 

Circular chisel--powered by motor? Inscrutable xylem penetration. tisky tisky.

 

I used a chisel powered by compressor at Biomechanics Week on sgr's. It has some advantages I suppose but if manual techniques work well why change, says this closet Luddite.

 

That sampling location and size is same as requested by labs in US.