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Kroin/Hortus hortus at worldnet.att.net
Fri Sep 13 01:47:03 EST 1996

Some of the answers received on this topic are a bit off.
IBA is quite sensitive to heat. It will break down within a day if the
temperature is much above 100F. We sell water soluble IBA tablets and do
not recommend that mixing be above 85F. Also, IBA is quite sensitive to
bright light. Our users are told not to leave the solutions made today
for more than 6 hours. ... u may still get results with older soln but
the conc will be severely dimin with time.

  ******************  Hortus USA Corp. ***************** 
   PO Box 1956 Old Chelsea Station, New York NY 10113 USA
          Rhizopon AA Dry Powders & Tablets for Solutions
                Plant Growth Regulator-Rooting Hormones
  ****************  hortus at worldnet.att.net  **************

Carl Pike wrote:
> Does anyone have any suggestions on how to apply auxin in a class lab on
> apical dominance (peas)?  We use the standard method of mixing the auxin
> (ethanol solution) in hot lanolin.  How stable is auxin in lanolin?  I
> worry about loss of hormone in the heated lanolin, and the inability to be
> sure a consistent amount has been applied to the stumps.  Does it help to
> recut the stump after a few days and make a fresh application?  Is there
> some way to apply the auxin in liquid form?
>  Any comments would be appreciated.
> Carl S. Pike                             (717) 291-3958
> Department of Biology                    FAX (717) 399-4548
> Franklin and Marshall College            Internet  C_PIKE at ACAD.FANDM.EDU
> P.O. Box 3003
> Lancaster, PA  17604-3003  USA

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