[CANUFNET] Oak tree top dieback

[shawnriberdy at yahoo.ca]

Hi all 

I think the tree was planted 15 years ago about 3 feet from a concrete pool patio so no new root damage from excavation as the planting was shortly after the new patio. The only thing I can think of that may damage the roots is if chlorine or other pool chemicals have accidentally contaminated the soil. But no other plants around have been effected or shown sings of stress. The house is located In LaSalle next to Windsor. The soil in this area is very sandy. 
Thank you all for the info I will take some of the questions and see if I can get more info before I head back to bc

Thank you 

Shawn Riberdy 

> On May 30, 2016, at 11:53 AM, 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> 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
>> 
>>