UKTC Archive

Re: Watering trees during the establishment phase

Subject: Re: Watering trees during the establishment phase
From: Wayne Tyson
Date: Feb 09 2020 20:03:01
Water about (pick a number) 110 percent of the cubic volume of the root
system, with emphasis on the zone where the fine (water-absorbing) roots
are and will soon be as they grow. No need to water next to the trunk
(except perhaps for very young trees).

One could track the evapotraspiration rate to establish demand. Roots have
to reach natural available (IF available) water, such as the capillary zone
above a water-table. If natural water isn't present, one must take care to
water long enough (based on the percolation rate) to raise the entire outer
root system to field capacity deeply with each application. The volume of
water added depends upon the amount of water already present (and where). A
probe can be a handy tool for estimating the presence of available water.

W



On Sun, Feb 9, 2020 at 10:45 AM John Hearne <johnhearne7@xxxxxx.com> wrote:

Water to field capacity. But then again - how do you specify what this is
to the waterer?



On Sun, Feb 9, 2020 at 2:30 PM Jim Quaife <jq@xxxxxxxxxxxxxxxxx.co.uk>
wrote:

Hi Ben,
Watering is a bit "finger-in-the-wind" and 8545 doesn't really help in
the
way which you have started the ball rolling.  It depends upon soil type
and
whether drainage aids/equipment had been incorporated at the time of
planting.
Section 11.3 in 8545 suggests testing, but more realistically does
provide
a suggested  benchmark for what is "dry" weather in terms of temperature
and time elapsed. Annex G. G2 and Table G1 go into more detail, but who
in
all honesty is going to define the soil types in the manner described? -
particularly as the first year's growth is likely to be in the planting
pit, which may or may not have used the site's soil, but almost certainly
will be at a different bulk density.
In a landscape setting where there are ground staff around watering can
be
carried out appropriately.   In a development site . . . ?  or highway
planting . . . ?
As with all BSIs where there are scant empirical yardsticks, the first
paragraph in the Foreword under the heading 'Use of this document'
applies.
You have a job on, and thank you for your initiative.
Best,
Jim


-----Original Message-----
From: uktc-request@xxxxxx.tree-care.info [mailto:
uktc-request@xxxxxx.tree-care.info] On Behalf Of Ben Rose
Sent: 09 February 2020 13:54
To: UK Tree Care
Subject: Watering trees during the establishment phase

So recently I read a specification produced by a large and well-respected
landscape architecture firm that recommended watering semi-mature trees
with '5 litres of water as and when required'. I set them straight but it
made me realise that there isn't much clear guidance out there.

I'm now putting together my own guide and have come up with the attached
table. I would be interested to hear what others think about what I'm
suggesting. Any comments would be welcome, on or off forum.

Also, I'd be very grateful if anyone was willing to share their
irrigation
specifications with me so that I can hopefully produce a practical guide.

Thanks in advance,

Ben


--
The UK Tree Care mailing list
To unsubscribe send mailto:uktc-unsubscribe@xxxxxx.tree-care.info

The UKTC is supported by Bosky Trees arboricultural consultancy
http://www.boskytrees.co.uk/



--
The UK Tree Care mailing list
To unsubscribe send mailto:uktc-unsubscribe@xxxxxx.tree-care.info

The UKTC is supported by Bosky Trees arboricultural consultancy
http://www.boskytrees.co.uk/



--

Hearne Arboriculture

www.hearnearboriculture.com



--
The UK Tree Care mailing list
To unsubscribe send mailto:uktc-unsubscribe@xxxxxx.tree-care.info

The UKTC is supported by Bosky Trees arboricultural consultancy
http://www.boskytrees.co.uk/




-- 
The UK Tree Care mailing list
To unsubscribe send mailto:uktc-unsubscribe@xxxxxx.tree-care.info

The UKTC is supported by Bosky Trees arboricultural consultancy
http://www.boskytrees.co.uk/