UKTC Archive

Re: Water Demand of Photinia

Subject: Re: Water Demand of Photinia
From: Jerry Ross
Date: Jan 08 2021 09:48:20
"Water demand should be defined as the ability of vegetation to cause drying to a clay subsoil" - (Giles Biddle 1998) It therefore has no relevance to trees growing on what I believe are largely sandy loams of California.
The scholarly/scientific evidence (such as it is) can be found in the publications you have been referred to before, notably and extensively summarized in Biddle's books 'Tree Root Damage to Buildings' vols. 1 & 2 (ISBN 0 9533086 1. 8 and 2.6) 



On 07/01/2021 21:13, Wayne Tyson wrote:

Upon what scholarly/scientific evidence doth the term, "water demand" rest?
Or upon what does it?

WT

On Wed, Jan 6, 2021 at 11:27 AM willross583@xxxxxxxxxxx.com <
uktc@xxxxxx.tree-care.info> wrote:


All,

      Has anyone got an idea of the water demand for Photina is it High ,
medium or low ?, an acquaintance of someone I know built a structure
without
PP and now has to go for retrospective and the building inspector has been
asking questions as the building is within a couple of m of next doors
shrubs and a Birch as it is apparently on clay there may be a problem.



Will




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