In article ,
Eggs Zachtly wrote:

Billy said:

In article ,
Eggs Zachtly wrote:

Billy said:

[...]

I don't know what your soil is like but if the roots can
penetrate it, they can go down to forty feet.

Source?

General Viticulture
by A. J. Winkler (Author), James A. Cook (Author), W. M. Kliewer
(Author), Lloyd A. Lider (Author)

Publisher: University of California Press; 2 edition (December 13, 1974)

ISBN-10: 0520025911
ISBN-13: 978-0520025912

http://www.amazon.com/General-Viticu...025911/ref=pd_
bbs_sr_1?ie=UTF8&s=books&qid=1207897652&sr=1-1

page 82 , third sentence

Thanks. I had never heard that before. One (at least this one) would think
that roots going that deep, for a vine, would be pointless. There's
probably a only trace of oxygen and very little fresh water at that depth.
I don't grow grapes, so I have very little reference materials about them.
I may pick that one up, just for the helluvit. =)

Water is the main reason the vines tap roots will stretch out so far. In
St. Emillion, an hour's drive east of Bordeaux, there are extensive
sandstone caves, originally excavated for building materials and later
used for wine storage. There often will be vineyards 20 feet or so above
the caves and it is not unusual to see their roots descending into the
cave where they will be seen with droplets of water on them, that have
been extracted from the air.
--

Billy

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