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<div class="moz-cite-prefix">Hi Deb,<br>
<br>
if there is a need for treatment (to make sure that no spores
survive) it might be worth to figure out if there is a plant
around that treats food with gamma radiation; this is usually done
e.g. with imported fruits or other commodities to kill off any
fungi or microbes. Another alternative might be Radiosurgery
medical centres which operate similar radiation sources.<br>
<br>
All the best<br>
Dirk<br>
<br>
<br>
Am 14.07.2017 um 19:33 schrieb Lewis, Deborah A [EEOBS]:<br>
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<p class="MsoNormal">Hello, all,<o:p></o:p></p>
<p class="MsoNormal">I’ve just made a disheartening discovery in
our herbarium… Some of our specimens of “fluffy”-headed
grasses were covered with plastic sheeting (open on at least
two sides so that the sheet could be removed for study) during
processing for accessioning. I’m not sure of the nature of the
plastic, but the mounting paper of some of these specimens
shows signs of mildew – aargh! Obviously, this plastic needs
to be removed as a first step! But I have some questions
beyond that:<o:p></o:p></p>
<p class="MsoNormal">1) What more should be done to stop the
growth of the mildew (if that is even possible)?
<o:p></o:p></p>
<p class="MsoNormal">2) Obviously it occurred, at least in part,
from trapped humidity. After the plastic is removed, can it
spread to adjoining specimens if the RH is at acceptable
levels? Could the nature of the plastic itself have
contributed to this? I’ll check the current RH in the room and
in the herbarium cabinet where these were stored, and,
although only a “snapshot in time,” can send that information
to anyone willing to offer some help.<o:p></o:p></p>
<p class="MsoNormal">Thanks in advance for any answers and
suggestions!<o:p></o:p></p>
<p class="MsoNormal">Deb Lewis<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span style="color:#2F5496">Deborah Q.
Lewis, Curator<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="color:#2F5496">Ada Hayden
Herbarium (ISC/IA)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#2F5496">EEOB
Department Phone: (1)
515-294-9499<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#2F5496">Iowa State
University FAX: (1) 515-294-1337<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#2F5496">342
Bessey Email:
<a href="mailto:dlewis@iastate.edu" moz-do-not-send="true">dlewis@iastate.edu</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#2F5496">2200 Osborn
Drive<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#2F5496">Ames, IA
50011-4009 (USA)<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<pre class="moz-signature" cols="72">--
Dirk Neumann
Tel: 089 / 8107-111
Fax: 089 / 8107-300
email: Dirk.Neumann(a)zsm.mwn.de
Postanschrift:
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---------
Dirk Neumann
Tel: +49-89-8107-111
Fax: +49-89-8107-300
email: Dirk.Neumann(a)zsm.mwn.de
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The Bavarian State Collection of Zoology
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