UKTC Archive

Re: Verticillium wilt control in Norway maple

Subject: Re: Verticillium wilt control in Norway maple
From: Phil Dye
Date: Jan 12 2021 16:16:17
______________________________________________________________________
FLAC. The Seminar, 2021. 2 days, 8 lectures, 11 hours world-class CPD
-Philosophy of tree risk assessment. -Practical hazard identification
-Trees & decay fungi: a new approach. -THREATS
-Forensic entomology. -Decision-making & tree work for risk control
-Tree morphology & retrenchment pruning. -RAVEN
13-14 May, Forest of Arden Marriott; 20-21 May, Dundee Uni Botanics
Please email enquiries@xxxxx.uk.com to register interest
______________________________________________________________________

 Thanks Ian,
My client is a Local Authority and the trees are street trees. Infection is 
such that any pruning of diseased branches would massively affect the amenity 
of the trees. V.dahliae, being a soil borne fungus, spreads quite easily 
among this tree population as there's reasonably heavy footfall.
They may have to bite the bullet and fell & replace. 
Many thanks
Phil    On Tuesday, 12 January 2021, 14:07:57 GMT, Brewster, Ian 
<ian.brewster@xxxxxxx.co.uk> wrote:  
 
 ______________________________________________________________________
FLAC. The Seminar, 2021. 2 days, 8 lectures, 11 hours world-class CPD
-Philosophy of tree risk assessment. -Practical hazard identification
-Trees & decay fungi: a new approach. -THREATS
-Forensic entomology. -Decision-making & tree work for risk control
-Tree morphology & retrenchment pruning. -RAVEN
13-14 May, Forest of Arden Marriott; 20-21 May, Dundee Uni Botanics
Please email enquiries@xxxxx.uk.com to register interest
______________________________________________________________________

Understanding how trees become infected with this disease, the vector and how 
its spread might help with a plan of action. 
With Elm disease cutting the branch with symptoms (discoloration of 
foliage/shepherds crook) deep below the visible disease into clean wood with 
wounds showing no staining should arrest further ingress.
I hear someone recently had lopped the top of an Ash tree with Chalara and 
appeared to respond well with new growth, albeit looking somewhat different.
An expensive operation for 60 Norway maple trees but ....
Understanding how trees become infected with this disease, the vector and how 
its spread might help with a plan of action. 
With Elm disease cutting the branch with symptoms (discoloration of 
foliage/shepherds crook) deep below the visible disease into clean wood with 
wounds showing no staining should arrest further ingress.
I hear someone recently had lopped the top of an Ash tree with Chalara and 
appeared to respond well with new growth, albeit looking somewhat different.
An expensive operation for 60 Norway maple trees but ....

-----Original Message-----
From: uktc-request@xxxxxx.tree-care.info <uktc-request@xxxxxx.tree-care.info> 
On Behalf Of Phil Dye
Sent: 12 January 2021 13:49
To: UK Tree Care <uktc@xxxxxx.tree-care.info>
Subject: Verticillium wilt control in Norway maple

______________________________________________________________________
FLAC. The Seminar, 2021. 2 days, 8 lectures, 11 hours world-class CPD 
-Philosophy of tree risk assessment. -Practical hazard identification -Trees 
& decay fungi: a new approach. -THREATS -Forensic entomology. 
-Decision-making & tree work for risk control -Tree morphology & retrenchment 
pruning. -RAVEN
13-14 May, Forest of Arden Marriott; 20-21 May, Dundee Uni Botanics Please 
email enquiries@xxxxx.uk.com to register interest 
______________________________________________________________________

Hi all,
Does anyone know of any effective control measures for Verticillium dahliae  
in Norway maples other than pruning out the deadwood?
I have a client with 150 Norway maples of which 60 have symptoms of V.dahliae 
to some degree or other. I'm looking for an alternative to felling. Best 
regards

Phil 


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NPS
 -----Original Message-----
From: uktc-request@xxxxxx.tree-care.info <uktc-request@xxxxxx.tree-care.info> 
On Behalf Of Phil Dye
Sent: 12 January 2021 13:49
To: UK Tree Care <uktc@xxxxxx.tree-care.info>
Subject: Verticillium wilt control in Norway maple

______________________________________________________________________
FLAC. The Seminar, 2021. 2 days, 8 lectures, 11 hours world-class CPD 
-Philosophy of tree risk assessment. -Practical hazard identification -Trees 
& decay fungi: a new approach. -THREATS -Forensic entomology. 
-Decision-making & tree work for risk control -Tree morphology & retrenchment 
pruning. -RAVEN
13-14 May, Forest of Arden Marriott; 20-21 May, Dundee Uni Botanics Please 
email enquiries@xxxxx.uk.com to register interest 
______________________________________________________________________

Hi all,
Does anyone know of any effective control measures for Verticillium dahliae  
in Norway maples other than pruning out the deadwood?
I have a client with 150 Norway maples of which 60 have symptoms of V.dahliae 
to some degree or other. I'm looking for an alternative to felling. Best 
regards

Phil 


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