[CANUFNET] Oak tree top dieback

[ConsultingArborist]

I agree with Elaine. First impression is trunk girdling. Collars or wires
or something is usually placed around the trunk at about that height when a
tree is planted. Helpful at first, these things tend to get forgotten and
not removed in a timely fashion.

On Monday, 30 May 2016, Ethier Elaine <elaine.ethier at umontreal.ca> wrote:

> Hello,
> Was the tree rolled around ? planted in a heat wave, was there a desiccant
> applied? Was the tree staked at any time with coil attachments, (ligature)
> on the bark and cambium ?
> I agree with a possible mechanical problem and would investigate when, how
> it was planted and what kind of stress it had other than lots of water.
> Trimming will need regular management to recreate a stem leader but will
> most certainly have a structural weakness.
>
>
> Elaine Ethier
>
>
> > Le 30 mai 2016 à 11:39, Michael Richardson <mrtree at kos.net
> <javascript:;>> a écrit :
> >
> > It is most certainly not oak wilt.  There is no (known) oak wilt in
> > Ontario and it does  not look like your leaves.
> >
> > I am tempeted to suspect root/root-collar damage but of course this is
> > simply a guess without evidence.  I would be examining the root collar
> and
> > the area between the live and dead portions of the tree.
> >
> >
> >> Hi everyone
> >>
> >> I'm visiting family in Windsor Ontario and my aunt has a  Quuercus robur
> >> 'Fastigiata' The top is dead from the top to about one meter from the
> >> ground.  The tree did non leaf out this spring except for the bottom
> meter
> >> of the tree. I know the weather  has been wet in the summer in the
> Windsor
> >> area the last few summers. I believe it is anthracnose or oak wilt. It
> >> looks like anthracnose but not sure if the disease would cause 80% of
> the
> >> tree to die. I suggested to prune the dead out and let the tree grow
> from
> >> the base but if it is oak wilt I don't want it to spread to there other
> >> oaks. Has anyone else had this problem in the area from the wet weather.
> >> Or dose anyone know what we are dealing with. The picture is a few
> leaves
> >> from the part of the tree That did leaf out this year and the disease is
> >> only on about 10 % of what is left alive.
> >>
> >>
> >>
> >>
> >>
> >> Thank you
> >>
> >> Shawn Riberdy
> >
> >
>


-- 
Oliver K. Reichl, B.E.S.(Hons)
Principal / Consulting Arborist-Ecologist*
Arborsphere Arboriculture & Urban Forestry Consulting
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* ASCA Registered Consulting Arborist #553
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