[NAFEX] MM111 graft height & burr knots?

Heron Breen breen at fedcoseeds.com
Tue Apr 5 08:08:31 EDT 2005

Hi All,
I have been reading a very interesting book called "The Expert Gardener" written
in the 1640's. Grafting is described in detail as is nutrition, pests, and
disease. A liberal mix of fact and superstition, although not having tried the
many different ways to make apples red described therein, I cannot discount them.
But on the subject of grafting height, the book offers what seems to me to be
good advice: On rich soil, graft as high as possible, and on poor soil graft as
low as possible. It would be interesting to discover if the amount of time that
soil-based nutrients spend in the rootstock, depending on soil type, influences
the grafted variety. I have read other, much more allusions to this being true,
but I have not found a clear physiological explanation. Maybe someone out there
can expound on this a little? Maybe more direct acess to nutrients helps the
variety on bad soil, and the higher graft helps keep too much of the goodies
causing to much vigorous veggie growth?

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