UKTC Archive
Re: CANKER ON ASH
| Subject: | Re: CANKER ON ASH |
|---|---|
| From: | Mark Carter |
| Date: | Dec 13 2004 11:17:35 |
Hi Ken,
In my experience Bacterial Canker on Ash can; reduce vitality and even cause
death of limbs through girdling; cause embrittlement of the timber,
possibly through exposition of the underlying timber and subsequent
desiccation; create entry points for secondary decay fungi.
It all depends on the extent of infection. Virtually all Ash down here have
some degree of infection and they live happilly with it for many years.
Others succumb to a more extensive infection and collapse, but the reduced
vitality that accompanies such infections may well have predisposed the tree
to infection, it's hard to tell which came first when your looking at a
partially collapsed tree covered in canker.
It appears to be more common on newly exposed woodland edges e.g. the edge
of a recently felled coppice coup, and it may use bark cracks, caused either
by increased sunlight levels on the trunk or increased wind movement, to
enter the tree.
A heavily cankered tree in a high target area is likely to require
intervention.
Mark.
----- Original Message -----
From: <Treecheck@xxxx.com>
To: "UK Tree Care" <uktc@xxxxxx.tree-care.info> Sent: Monday, December 13, 2004 10:51 AM Subject: CANKER ON ASH
Do we have any sure knowledge of the effects of canker girdles onsecondaryash branches and scaffold limbs. Does the canker have an effect on the timber within, rendering it structurally liable to failure. Any evidence, experience etc ken -- The UK Tree Care mailing list To unsubscribe send mailto:uktc-unsubscribe@xxxxxx.tree-care.info The UKTC is supported by The Arbor Centre http://www.arborcentre.co.uk/
-- The UK Tree Care mailing list To unsubscribe send mailto:uktc-unsubscribe@xxxxxx.tree-care.info The UKTC is supported by The Arbor Centre http://www.arborcentre.co.uk/
Current thread
- CANKER ON ASH
Dec 13 2004 10:51:43- Re: CANKER ON ASH
Dec 13 2004 11:17:35
- Re: CANKER ON ASH