UKTC Archive

RE: neighbouring tree roots and RPAs

Subject: RE: neighbouring tree roots and RPAs
From: Jasper Fulford-Dobson
Date: Mar 05 2021 13:49:02
Really good stuff Jon et al.
Loving the image in Biddle and Jim's one from his very expensive book (being 
so simple I find pictures easier than words).
Also really loving the Harvard Forest papers - great resource.
Thanks all.


-----Original Message-----
From: uktc-request@xxxxxx.tree-care.info <uktc-request@xxxxxx.tree-care.info> 
On Behalf Of Jon Heuch
Sent: 04 March 2021 15:22
To: UK Tree Care <uktc@xxxxxx.tree-care.info>
Subject: RE: neighbouring tree roots and RPAs

Thanks Jasper, that list is very focused on root grafts!

 

I have on my computer a Chapter (of a book) titled Roots & Root Systems.
Unfortunately, my gannet like tendencies with regards to information & 
references doesn't require me to keep a note of where my sources come from so 
I have some more homework to do to find the book title, but what I have makes 
for interesting reading:

 

Root Competition

 

The size of root systems usually is reduced when they are grown in competi- 
tion with other plants. 

For example, Pavlychenko (1937) reported that root sys- tems of  barley and 
wheat were  nearly  

100 times larger  when grown without competition than when grown in rows 15 
cm apart. Although 

roots often seem to  be intertwined  in  the soil, there  is evidence  of  a 
mechanism  that  

prevents roots of some kinds of plants from growing very close to one 
another. This was reported  

for  roots of  trees  by  Lyford  and Wilson  (1964)  and  for soybean  by 
Raper  and  Barber  

(1970a), as shown  in  Fig. 5.21,  but seems  not  to  occur  in tomato 
(Bormann,  1957). 

Considerable  information  on  root competition  has bene summarized by 
Caldwell in Gregory et al. 

(1987). The detrimental effects of one plant or crop on another can be 
attributed to the ( 1) 

depletion of water.. [continues on next page]

 

 

The reference to Lyford and Wilson (1964) is I assume to Harvard Forest
Paper No 10 titled DEVELOPMENT   OF   THE   ROOT   SYSTEM   OF ACER   RUBRUM
L. as my copy doesn't include the list of references.

 

I assume Gregory (1987) is his book on roots Plant Roots: Growth, Activity 
and Interaction with Soils

 

Jon 

 




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

The UKTC forum is supported by Bosky Trees arboricultural consultancy and 
Stockholm Tree Pits https://www.stockholmtreepits.co.uk



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

The UKTC forum is supported by Bosky Trees arboricultural consultancy and
Stockholm Tree Pits
https://www.stockholmtreepits.co.uk