[CANUFNET] Dutch Elm Disease tolerance

[via CANUFNET]

We have carried out some projects thinning urban forests with a mix of native/non-natives including healthy mature white elms and had the elms die soon after thinning and replanting. Also seen this after construction, even when they were well protected during construction.

Stephen Smith
Urban Forester, ISA Certified Arborist
Qualified Tree Risk Assessor
Urban Forest Associates
www.ufora.ca
off 416-423-3387/cell 416-707-2164


From: Alison Bond via CANUFNET 
Sent: Tuesday, August 07, 2018 2:31 PM
To: canufnet at list.web.net 
Subject: [CANUFNET] Dutch Elm Disease tolerance

Hello Canufnet:

Do you know of any research that indicates whether resistance to DED is affected by tree health/vigour?  Much of what I can find indicates that trees are being selected based on their resistance to DED but it isn't clear if the tree is just not susceptible to DED or whether it is actively fighting the disease.  If the latter, one would expect that the tree would be more prone to infection when it has been otherwise compromised (e.g., new sidewalk cut into its roots.)  Thoughts?

Thank you.
Alison


Alison Bond BSc MSc BLA   OALA  CSLA

Landscape Architect and Certified Arborist


ENVISION-TATHAM Inc.    
115 Sandford Fleming Drive, Suite 200, Collingwood, L9Y 5A6
abond at envision-tatham.com I  Tel: 705.445.0422  I  Fax: 705.444.2327  I  Cell: 705.994.2059 I   www.envision-tatham.com

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