Hormones & Grafting.


reply to:
Date: Wed, 13 Jan 1999 11:41:35 -0500
From: BJC <bjc@nh.ultranet.com>
Subject: Hormones & Grafting.

Joel,
Are you aware of any other tests, articles etc. on Grafting & Hormones?
One of my professors is interested. (So am I)
bjc

Dear BJ

I have searched unsuccessfully for technical articles. I did receive the
following from positn a similar inquiry on the NAFEX list

regards
Joel

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

 I have succeeded in grafting trumpet vine on catalpa using C-mone K+
.The scion was cut in winter, stored in the refrigerator until spring ,
I trimmed it for a saddle graft, soaked it in a very dilute solution of
the above hormone, put it back in the frig for a couple weeks til the
weather got warmer, did the graft and WAITED! The graft calloused but
just sat there. It did not start growing until the weather really warmed
up. The shoots are now about three feet long. My attempts in past years
(minus hormone) always failed because the extremely thin cambium of the
vine failed to generate new cells. I am currently trying one year old
stems cut now(July 6) quick dipped in 5000 ppm, inserted 7 foot up on a
1-1/2 inch caliper catalpa. If this can be easily repeated, it would
make it possible to create standards of select trumpet vine without the
NASTY rampant suckering seen with Campsis.

                      Jerry May on the Outer Banks


Dear Joel

  I am chagrined to admit that my methods were sloppy, unscientific, not
properly documented. That said, I shall try to describe, as best my
memory? allows, what I did. The scion, taken from a neighbors plant, was
taken last winter. It was about an inch in diameter with a cluster of
buds at one end. I thought there might be more cambium on a piece this
old. I stored it slightly moist in the fridge for a while(elapsed time?
I don't remember). I trimmed it for a saddle graft, soaked it in a very
dilute solution(a feeble guess would be 25 ppm Cmone K+) for a day or
so. I stored it in the fridge for a week or two, then grafted on a one
inch caliper catalpa. It was a very poor fit because the stock split
some, leaving a gap below the scion. I used parafilm to wrap, covered
that with a bread bag, covered in turn by a piece of Typar. I waited a
very long time with little change in appearence of the scion. The buds
finally start swelling bit, then it sulked some more. It did not start
growing until really warm weather came.
   I have recently made an attempt using one year old stems, cut for a
side graft, dipped in 5000ppm Cmone K+ , and stuck on the tree at about
seven feet.
   It is obvious this needs to be repeated under contolled conditions by
a disciplined, organized person. Because the hormone apparently improves
chances of success, it may be possible to use current years growth for
scions. I believe warm temperatures are necessary. If older growth is
needed, it may be necessry to cut in late winter and store it until bud
break of Catalpa or later?

  I have rooted some catalpa for future bumbling.

              regards
              Jerry May

From:          Clair & Vivian Lammers <Lammers@alaska.net>
To:            "'NAFEX List'" <nafex@cet.com>
Subject:       RE: research to improve GRAFTING using auxins: plant rooting
(J. Kro
Date:          Thu, 23 Apr 1998 15:25:39 -0700

I tried something different while grafting this spring.  I dipped 64
grafts in "HORMODON 1 (Indole-3-butyric Acid 0.1%).  Only one of the
dipped grafts failed to grow.  Also, I only dipped the graft that  was
not a complete fit (slightly mis-cut, to a cut to long/short).  After
dipping, I slightly tapped the graft on the edge of a can (to remove
excess) and grafted normally.  I'm impressed with it.  When my
Honeycrisp arrived, having only 8 rootstock left, I grafted those
8---5 were dipped and 3 not.


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