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Is this cause for Concern ?


IVECOKID
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Looks like developing Dryad's Saddle (Polyporus squamosal) emanating form the old pruning wound. Quite common in my experience n not usually an immediate cause for concern although it does appear at the perimeter of the wound possibly indicating more extensive decay than if it came from the middle, which they often do, and then suggesting tree has compartmentalised.

 

So, doubtless we'll sound find out I'm better sticking to H&S stuff :blushing:

 

Cheers..

Paul

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Could be Polyporus squamosus slightly deformed due to the re-growth from the pruning wound, host on dead wood - depends on the extent of the deadwood in that area, combined with the tight union..............suggest further investigation.

As TPO will require good detail to the extent of decay and what is happening at the union to fell - LPA may only allow reduction to alleviate stresses on the area if a very prominent tree.

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I would say it needs further investigation. A few quotes courtesy Wiki

 

where it causes a white rot in the heartwood of living and dead hardwood trees.

 

It is particularly common on dead elm and is also found on living maple trees.

 

It plays an important role in woodland ecosystems by decomposing wood, usually elm, but is occasionally a parasite on living trees. Other tree hosts include ash, beech, horse chestnut, lime, maple, planetree, poplar, and willow.[6]

 

White rot and parasite and live maple should ring a few alarm bells.

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This is what I have written on it for notes (can provide references if needed):

 

"A sapwood exposed strategist, this fungus gains entry via small to large-sized stem and branch wounds [3] [23] [24] [48]. It colonises primarily on sapwood and ripewood, with decay eventually leading to cavity formation via heartwood degradation [2] [3] [49]."

 

"In many instances, decay is confined to small zones surrounding the wound that provided entry [1] [2]. However, if decay establishes via numerous wounds, or extends with ease due to zones of dysfunctional sapwood, assimilation of the multiple decay zones, or single large zone, can form significant cavitation [1] [2]. As decay progresses, failure can occur through both ductile and brittle fracturing [3] [12], particularly if the infected stem or branch has less than one third of its diameter in-tact and healthy [2]. However, such failure is confined predominantly to hosts with extensive wounding [2]."

 

"As decay is usually localised to the point of wounding [1] [2], ensuring any pruning wounds are kept small, minimal and above the collar can aid with prevention of significant decay instances. Where infection is evident and pruning wounds are massive and severe, inspection of the extent of decay [1] [2] is necessary and remedial works might need to be undertaken to reduce risk."

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