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[Lee Reich <leeareich@gmail.com>]

I also remember that article from way back, perhaps in HortScience. The 
grafted portions of the plants were set in the cut out notches and warm air 
is blown down the tubes. In this way, only the grafts get warmed while the 
rest of the plant -- the upper portion of the scion and the lower portion of 
the rootstock -- can be kept cool.

Lee Reich, PhD
Come visit my farmden at http://leereich.blogspot.com/
http://leereich.com/

Books by Lee Reich:
A Northeast Gardener's Year
The Pruning Book
Weedless Gardening
Uncommon Fruits for Every Garden
Landscaping with Fruit
Grow Fruit Naturally

On Oct 31, 2013, at 11:10 PM, Peter Chrisbacher wrote:

> I recall seeing a fairly scientific write-up where the authors used PVC
> pipe with notches cut out of it for callusing bench grafts - I believe it
> was in one of the NNGA annual reports.
> 
> John Brittain heats his bench grafted pecans at 80 degrees to callus them -
> if I recall correctly he uses old freezers for this purpose.  There was a
> write-up in the NNGA 77th annual report describing his process for pecans
> that I have the text of - email me if you can't find it online.
> 
> Woop! First line of John's article is: "The basic technique for bench
> grafting nut trees has been described by Leslie Wilmoth in the 64th and
> 68th Annual Report of NNGA" so those are the NNGA reports/articles you'll
> want copies of :)
> 
> Pete Chrisbacher
> Kennett Square PA
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