Leigh - I doubt that things are that different in Norfolk and around
here I.hispidus poses a very serious risk factor on ash. It used to be
said in an FC booklet that the timber could be weakened by a factor of
10 in advance of the visible decay front. No reference to this claim was
given but nothing in my experience contradicts it. Received wisdom is
that it is also responsible for breakage in old tool handles and I've
not seen too many fruiting bodies on them! It's great for making
wildlife cavities and doesn't necessarily threaten the physiological
life of the tree but it very certainly does compromise structural
integrity.
Gilbert Addison | Tree and Countryside Officer |Breckland Council
Office: 01362 656873 Fax: 01362 656297
DDI: 01362 656243 | Mobile: na
Elizabeth House, Walpole Loke, Dereham NR19 1EE
gilbert.addison@xxxxxxxxxx.gov.uk |www.breckland.gov.uk
-----Original Message-----
From: leigh cadogan [mailto:leighcadogan@xxxxxxxx.com]
Sent: 18 February 2008 19:33
To: UK Tree Care
Subject: RE: Diseases affecting Ash
Thanks for your replies, they tend to mirror my own thinking.> Date:
Mon, 18 Feb 2008 09:26:59 +0000> From: trees@xxxxxxxxxx.co.uk> To:
uktc@xxxxxx.tree-care.info> Subject: Re: Diseases affecting Ash> > > >
leigh cadogan wrote:> > Hi, has anyone any info. on the possibility of
failure of an ash with inonotus hispidus in two main branches of a
mature tree. I,ve been informed by a reputable source that inonotus is
endophytic on Ash and poses little risk of failure, i disagree,
interested to know other opinions.> > Take a look in Schwarze's Fungal
Strategies of Wood Decay in Trees for a > detailed, ahem, breakdown of
how the fungus operates, and why it > "...must be classed as much more
dangerous on ash than on London Plane", > and why Lonsdale (R.A.T. 7)
reckons that its presence (on Ash) "often > indicates that
breakage...could be imminent".> As for being endophytic, it might (for
all I know) reside harmlessly as > propagules in an endophytic manner in
a healthy, vigorous tree; but once > conditions favour it and it gets
going, it certainly acts like a parasite.> > > > -- > 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/> >
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