[CANUFNET] Soil Cells, Salt, & Poor Leaf Expansion

[stephen at ufora.ca]

Sounds like salt accumulating in the soil.  Do the soil cells have good
drainage built in?  I know of a project here in Toronto where the drainage
system wasn't built properly so the salty water accumulated in the system
and didn't drain away as planned.

 

Stephen Smith

Urban Forest Associates

Urban Forestry & Ecological Restoration

www.ufora.ca

Office/fax 416-423-3387

Cell 416-707-2164

 

From: CANUFNET <canufnet-bounces at list.web.net> On Behalf Of Alison Bond via
CANUFNET
Sent: June 3, 2022 9:27 AM
To: Canadian Urban Forest Network <canufnet at list.web.net>
Cc: Alison Bond <abond at envision-tatham.com>
Subject: [CANUFNET] Soil Cells, Salt, & Poor Leaf Expansion

 

Hello CANUFNET,

 

I'm wondering whether anyone has come across this.  We have two streetscape
projects (different municipalities) that include soil cells installed over
the last two years.  The Freeman Maples, in particular, have been
unsuccessful and typically leaf expansion begins and then stops.  The very
small leaves turn brown, as though scorched.  On one project, Freeman Maples
were also planted in sod and the trees are fine.

 

Both projects were installed by the same contractor and I believe they used
soil from the same source.  In both projects, stormwater is directed to the
soil cells from the catchbasins.  

 

The contractor has indicated that it is the high salt level in the soil (in
the soil cells) that is causing the trees to fail.  They have had the soil
tested (probably at the tree pit) and it is high in salt.  

 

That said, Freeman Maples have been used successfully in soil cells on other
projects.

 

I haven't seen this symptom attributed to soil salt. where the buds break
and the leaves start to expand, but then stop.  Is this a symptom of high
salinity or is this perhaps something else, exacerbated by less than ideal
soil salt levels?  I've had someone suggest maybe verticillium.  Any ideas?

 



 

Thank you.

 

Regards,

Alison

 

Alison Bond BSc MSc BLA OALA CSLA

Landscape Architect and Certified Arborist

 

ENVISION-TATHAM Inc.

115 Sandford Fleming Drive, Suite 200, Collingwood, L9Y 5A6

 <mailto:abond at envision-tatham.com> abond at envision-tatham.com I Tel:
<tel:7054450422> 705.445.0422 I Fax:  <tel:7054442327> 705.444.2327 I Cell:
<tel:7059942059> 705.994.2059 I  <http://www.envision-tatham.com/>
www.envision-tatham.com

This email may contain confidential and/or privileged information for the
sole use of the intended recipient. Any review or distribution by others is
strictly prohibited. If you have received this email in error, please
contact the sender and delete all copies.

 

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://list.web.net/pipermail/canufnet/attachments/20220603/c5da6bb4/attachment-0001.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.png
Type: image/png
Size: 775676 bytes
Desc: not available
URL: <http://list.web.net/pipermail/canufnet/attachments/20220603/c5da6bb4/attachment-0002.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image002.png
Type: image/png
Size: 538791 bytes
Desc: not available
URL: <http://list.web.net/pipermail/canufnet/attachments/20220603/c5da6bb4/attachment-0003.png>