V.T.A symptoms "the chatty trees"

[Pete Bannister]

Really nice pics of 'shell buckling' Rob..

What do you mean by 'possible bark sinkage at basal area' ? many thanks

[RobArb]

Thanks gerrit, I did suspect as much (with tony's help)

 

Pete, if you look at the pictures (i think it's the last one on oak 2) you can just make out near where the soil meets the base of the trunk a "sinkage" or dip in the bark on the right.

 

Possible suspects are what gerrit has stated

 

Sent from Rob's GalaxySII

[RobArb]

F. excelsior with weird basal growth

 

There was a row of 10 ash all like this and this wasn't the biggest, pics don't show a great deal but I was in a rush

 

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[Tony Croft aka hamadryad]

nothing strange there rob, well besides the abnormal growing conditions of a concrete (both real and effective) pit it was FORCED to grow in.

 

re inspect for pholiotta squarossa in a couple of months

[RobArb]

Will do, should of got better pics really, these butts where massive for the size of the trees and one of the smaller ones had a more pronounced bottle effect at the base, but as stated I was in a rush:sad:

 

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[RobArb]

when does a shear crack become a shear bomb crack?

 

see example on this Castanea

[Tony Croft aka hamadryad]

bark cracks!

 

rob shear cracks go right through as do shear bombs

[RobArb]

Haha, me confused now! You could see in the tree (not clearly on the pics) the cracks went into the stem and where on the other side?

 

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[Tony Croft aka hamadryad]

Shear cracks tend to follow a fairly clean line and go from root crown up, and inbetween major roots as apposed to splitting a root through the centre longtitudinal. when a shear bomb goes past the neutral fibre zone it is dangerous, also a seperation shear crack where a shear crack seperates a portion of the root system or a major root from the rest of the tree is also highly dangerous.

 

I would suggest these are dessication or growth crack, and that the tree will not be effected by them, but thats an opinion based on photos and therefore flawed.

 

NOONE bar the man who was stood at the tree has the full story and ability to determine the reality.

[RobArb]

Good point

 

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