UKTC Archive

Re: Chalara - slightly heartening news re felling trees.

Subject: Re: Chalara - slightly heartening news re felling trees.
From: Wayne Tyson
Date: Jul 27 2019 20:23:15
Sadly, the quicker you get them down the safer they are to work with.

Wayne

On Sat, Jul 27, 2019 at 3:19 AM J Finlow <jfinlow@xxxxxxxxxxxxxxxxxxx.com>
wrote:

Thank you Rupert.

Yes - useful pointer.

-----Original Message-----
From: uktc-request@xxxxxx.tree-care.info [mailto:
uktc-request@xxxxxx.tree-care.info] On Behalf Of Rupert Baker
Sent: 26 July 2019 14:44
To: UK Tree Care
Subject: Chalara - slightly heartening news re felling trees.

Dear all,

Having had so much conflicting observations and advice re felling infected
Ash, I  had the opportunity on one of the estates whose trees I look after,
to fell one as a trial.

The tree was ~20m high, 30cm dbh, in a stand of Ash in a woodland (ideal
Ash ground, limey soils, Ransoms grow under them  in spring) (sorry, wild
garlic). The whole stand (2 acres) has Chalara dieback.

This one was well over 40% crown loss (see attached picture). It was in
the right place to fell onto a hard forest ride- laid with Type1/803 some
years ago, and very hard in this weather. I felled it by boring in behind
the dip, leaving a very narrow hinge, and then cutting back, so that the
hinge would let go asap. It fell unimpeded, and heavily, on to the ride.
The was no breakage of the stem and major branchwood, which all looked
sound, with that nice pinky beige of fresh-cut Ash, when snedded and
cross-cut. The only fragile branches were those in the upper canopy, 50mm
or less diameter, where there was a clear change in wood colour to dry grey
sleepy wood.

                So in future, we are going to be trying to fell ash (where
there is a significant target) once they show clear signs of dieback, but
before they get to the stage of mostly dead with a few puffs of epicormic
growth.

Hope this is a useful pointer.  One swallow doesn't make a summer, but the
fragility was nowhere as bad as on trees that had almost completely died
back; and I'd have been willing to climb one in that state, as long as I
stayed on the stem and major limbs as attachments.

Atb

Rupert




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The UKTC is supported by Bosky Trees arboricultural consultancy
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