UKTC Archive

RE: Watering trees during the establishment phase

Subject: RE: Watering trees during the establishment phase
From: Brewster, Ian
Date: Feb 10 2020 09:03:20
Apart from surviving the 1st year isnt the technique of watering to attract 
those newly planted trees and their roots into the deeper  soil towards quick 
establishment. I recall a local nursery being critical of mulching because 
they found it promotes surface rooting that would succumb to dry weather and 
drought conditions. So the spiral perforated pipes placed at the edges of the 
pit base supposedly 1.5x wider in diameter than the root ball is supposed to 
draw root growth into damp soils and prevent spiralling.
I recall a few Arb specs suggesting 13 weekly waterings throughout the June 
July August months to field capacity (to the tube top) with 40 litres. This 
presumably is based upon an expected pit size of 1x1.x0.5m cubic volume. Of 
course no watering if there has been a period of wet weather where the ground 
is moist. As others say knowing what the growing medium is would help with an 
understanding the nature of soil moisture retention and nutrient value. Free 
draining soils for example will likely require more water and those heavy 
clay soils less so.


Sent from my Samsung Galaxy smartphone.
Apart from surviving the 1st year isnt the technique of watering to attract 
those newly planted trees and their roots into the deeper  soil towards quick 
establishment. I recall a local nursery being critical of mulching because 
they found it promotes surface rooting that would succumb to dry weather and 
drought conditions. So the spiral perforated pipes placed at the edges of the 
pit base supposedly 1.5x wider in diameter than the root ball is supposed to 
draw root growth into damp soils and prevent spiralling.
I recall a few Arb specs suggesting 13 weekly waterings throughout the June 
July August months to field capacity (to the tube top) with 40 litres. This 
presumably is based upon an expected pit size of 1x1.x0.5m cubic volume. Of 
course no watering if there has been a period of wet weather where the ground 
is moist. As others say knowing what the growing medium is would help with an 
understanding the nature of soil moisture retention and nutrient value. Free 
draining soils for example will likely require more water and those heavy 
clay soils less so.


Sent from my Samsung Galaxy smartphone.


-------- Original message --------
From: Wayne Tyson <wt750mv@xxxxxx.com>
Date: 10/02/2020 06:49 (GMT+00:00)
To: UK Tree Care <uktc@xxxxxx.tree-care.info>
Subject: Re: Watering trees during the establishment phase

A probe will pick up wetness, and any odor will indicate anaerobic
conditions. It's all about having *available* water per *cubic* unit of
measure.

Calculations need to consider the amount of available water present, and
the AWC known. The biggest mistake in tree irrigation is not getting water
down deep enough, at least in these parts.

Wayne
NPS
 -------- Original message --------
From: Wayne Tyson <wt750mv@xxxxxx.com>
Date: 10/02/2020 06:49 (GMT+00:00)
To: UK Tree Care <uktc@xxxxxx.tree-care.info>
Subject: Re: Watering trees during the establishment phase

A probe will pick up wetness, and any odor will indicate anaerobic
conditions. It's all about having *available* water per *cubic* unit of
measure.

Calculations need to consider the amount of available water present, and
the AWC known. The biggest mistake in tree irrigation is not getting water
down deep enough, at least in these parts.

Wayne



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