UKTC Archive

Re: Robinia roots

Subject: Re: Robinia roots
From: John Hearne
Date: Jul 12 2019 14:45:05
Thanks Pedro - that is what I told the client my guess was. But as I say -
I expected more of a flattened cushion which got me looking for other
explanations. Perhaps the bricks are just too light to cause a flattened
form.

John

On Fri, Jul 12, 2019 at 3:07 PM Pedro Álvaro <pedro@xxxxxxxxxxxx.com> wrote:

Hi John,

Observing the picture, I reaffirm that types of structures are "cushion
formation" of roots between compacted soil and bricks, result of reaction
of forces (pass of pedestrians),  and how says Kevin Slezacek too:
"callous formation from damage from the paving".

Best regards,

Pedro Alvaro

-----Mensaje original-----
De: uktc-request@xxxxxx.tree-care.info [mailto:
uktc-request@xxxxxx.tree-care.info] En nombre de John Hearne
Enviado el: viernes, 12 de julio de 2019 15:59
Para: UK Tree Care
Asunto: Re: Robinia roots

Hi Wayne - it's dark, moist and airy under the paviours. Suits roots sir!

On Fri, Jul 12, 2019 at 2:37 PM Wayne Tyson <wt750mv@xxxxxx.com> wrote:

Esteemed John Hearne:

What is the cause of the surface development of the root system?

Wayne

On Fri, Jul 12, 2019 at 4:52 AM John Hearne <johnhearne7@xxxxxx.com>
wrote:

Esteemed collective,

I've had to look at a Robinia that is disrupting some brick pavioured
surfacing causing a trip hazard. The pattern of disruption showed two
roots
were causing minor lifting of bricks over lengths of about 4-5m.

But there were occasional bricks lifted significantly higher and upon
removing these bricks there was, in each case, the underlying circa 3cm
diameter root with a circa 5cm diameter swelling on top - for all the
world
reminiscent of an emerging pneumatophore.

I would expect, if anything, maybe flattening in regions of contact
with
the paving. But waht are these structures? Sucker initials? ENORMOUS
N-fixing nodules?

I am going to suggest chiselling them off to bet the bricks back flat -
but
thought I ought to know what they were?

Help appreciated.

John

--

Hearne Arboriculture

www.hearnearboriculture.com



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www.hearnearboriculture.com



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www.hearnearboriculture.com



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