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[nafex] Re: Important detail on bridge grafting
Thanks Hélène.
I'm the disappointed grafter. Thanks for the extra tip.
What I can't decide is whether to attempt more bridge grafting, or to
encourage growth from below the damage, to recreate the tree
structure since the one attempt (at 3 grafts) just ended in
frustration and a botched job on my part. I'm leaning toward
the "encourage growth from below the damage" as I've limited time and
I feel my chance of success to be low [for the bridge graft].
Since I'm in a one tree of each variety situation, I have taken the
step of taking scion wood of each of the damaged varieties
and "banking" it on the standard size Stayman Winesap I've been
pruning down to a manageable size. My eventual goal on the Winesap
is to have it produce no Winesap apples.
Chris Mauchline
SE PA, zone 6
--- In nafex@y..., "H.Dessureault" <inter.verbis@a...> wrote:
> To a disappointed grafter:
>
> I read a comment recently on bridge grafting which I wanted to
reply to, but I have now lost the message and the name of the person
who was writing.
> The person I am refering to was unhappy about the technique and
complained about the limb used as a bridge falling out of place.
> Someone else had described using small finishing nails at both end
to tuck the carved tips into the live bark on both side of the gap to
be bridged...
> So I won't go over the method again.
>
> The following aspect was missing from the description.
>
> The limb of good live wood taken from the same tree (if possible)
which is used to do the bridging has to be LONGER than the distance
to cover. When the tips of the limb cut in the usual manner are
nailed into place the limb bulges outward, of course, because it is
too long. But the curve creates a tension which keep the limb in
place under the bark at both ends and a good contact.
>
> The nails are a necessary support but without the tension, the wood
tends to get loose and lose contact. What appeared to have been the
right length has become too short!!!
>
> After a while, when the graft has taken, the limb looses the bulge
and straightens itself into a perfect fit. Scarring tissues grow at
each end and later the limb which now carries the cadmium accross the
gap also gets wider and stronger.
>
> Hélène
> Zone 3
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