Just clearing up after having a Copper Beech felled. Biggy. About 90 ft tall
and a trunk of about 4 feet diameter.

Question about the sap. Will the roots still be trying to 'push' the sap up
or does the tree, trunk and leaves 'pull' the sap up.

Sap, is it 'pushed' or 'pulled'?

(I know I have a great bonfire which has been in for nearly a week and that
is just the twiggy branches and saw dust ....:-))

---------------------------------------------------------------
www.friendsofshanklintheatre.co.uk
www.hmscollingwoodassociation.com
www.rneba.org.uk
www.nsrafa.org

On 02/03/2014 08:48, 'Mike' wrote:

Just clearing up after having a Copper Beech felled. Biggy. About 90 ft
tall and a trunk of about 4 feet diameter.

Question about the sap. Will the roots still be trying to 'push' the sap
up or does the tree, trunk and leaves 'pull' the sap up.

Sap, is it 'pushed' or 'pulled'?

Both. At least for a while. It may well try to regrow from the stump.

Pulled by capillary action of narrow tubes of the xylem and pushed up by
the roots in return for sugar flowing the other way down the phloem.

One of the plants with the highest known internal sap pressure is the
dangerous toxic succulent euphorbia virosa (and close relatives). It can
throw fine threads of blinding caustic sap several feet when damaged.
You wear eye protection when handling it or working nearby.

ISTR an Italian tank brigade got into serious trouble after driving into
a grove of the stuff. It is one of the more fearsome plants.

--
Regards,
Martin Brown

"Martin Brown" wrote in message ...

On 02/03/2014 08:48, 'Mike' wrote:

Just clearing up after having a Copper Beech felled. Biggy. About 90 ft
tall and a trunk of about 4 feet diameter.

Question about the sap. Will the roots still be trying to 'push' the sap
up or does the tree, trunk and leaves 'pull' the sap up.

Sap, is it 'pushed' or 'pulled'?

Both. At least for a while. It may well try to regrow from the stump.

Pulled by capillary action of narrow tubes of the xylem and pushed up by
the roots in return for sugar flowing the other way down the phloem.


================================================== =

Very many thanks Martin. And to Sue who emailed me :-)

Mike


---------------------------------------------------------------
www.friendsofshanklintheatre.co.uk
www.hmscollingwoodassociation.com
www.rneba.org.uk
www.nsrafa.org

On Sunday, 2 March 2014 16:48:42 UTC+8, 'Mike' wrote:
Just clearing up after having a Copper Beech felled. Biggy. About 90 ft tall

and a trunk of about 4 feet diameter.



Question about the sap. Will the roots still be trying to 'push' the sap up

or does the tree, trunk and leaves 'pull' the sap up.



Sap, is it 'pushed' or 'pulled'?



(I know I have a great bonfire which has been in for nearly a week and that

is just the twiggy branches and saw dust ....:-))

Have a look at this - http://www.youtube.com/watch?v=qiiFMRYUEQM It throws up some interesting aspects of the whole process.

Graeme

wrote in message
...

On Sunday, 2 March 2014 16:48:42 UTC+8, 'Mike' wrote:
Just clearing up after having a Copper Beech felled. Biggy. About 90 ft
tall

and a trunk of about 4 feet diameter.



Question about the sap. Will the roots still be trying to 'push' the sap
up

or does the tree, trunk and leaves 'pull' the sap up.



Sap, is it 'pushed' or 'pulled'?



(I know I have a great bonfire which has been in for nearly a week and
that

is just the twiggy branches and saw dust ....:-))

Have a look at this - http://www.youtube.com/watch?v=qiiFMRYUEQM It throws
up some interesting aspects of the whole process.

Graeme
================================================== ===

Thanks for that Grahame. As I understand it .......................

Actually I don't quite. I need to study that a few times ..... and then
study it again!!

But I am glad I asked the question!!

Mike


---------------------------------------------------------------
www.friendsofshanklintheatre.co.uk
www.hmscollingwoodassociation.com
www.rneba.org.uk
www.nsrafa.org

"'Mike'" wrote in message ...

Have a look at this - http://www.youtube.com/watch?v=qiiFMRYUEQM It throws
up some interesting aspects of the whole process.

Graeme
================================================== ===

Thanks for that Grahame. As I understand it .......................
....


My apologies, incorrect Graeme.

Mike

---------------------------------------------------------------
www.friendsofshanklintheatre.co.uk
www.hmscollingwoodassociation.com
www.rneba.org.uk
www.nsrafa.org

On Wednesday, 5 March 2014 15:54:15 UTC+8, 'Mike' wrote:
"'Mike'" wrote in message ....



Have a look at this - http://www.youtube.com/watch?v=qiiFMRYUEQM It throws

up some interesting aspects of the whole process.



Graeme

================================================== ===



Thanks for that Grahame. As I understand it .......................

...





My apologies, incorrect Graeme.

Not a problem. I'm used to having both my first and last names misspelled anyway. It might come in handy one day, i.e. this legal document isn't referring to me (cf. the spate of fluffed extradition requests for IRA suspects in the '80s thanks to the inability to spell Irish names correctly)


Graeme