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Arisaema Enthusiast Group (AEG) Discussion List (and other= Arisaema Enthusiast Group (AEG) Discussion List (and other=
Wed Jun 13 17:40:10 CEST 2007


hardy  Aroids)" <ARISAEMA-L at NIC.SURFNET.NL> Aroids)" <ARISAEMA-L at NIC.SURFNET.NL>
Sender: "Arisaema Enthusiast Group (AEG) Discussion List (and other=
From: Adam Fikso <adam14113 at AMERITECH.NET>
Subject: Re: ARISAEMA-L Digest - 11 Jun 2007 to 12 Jun 2007 (#2007-7=
8)  Rescuing an infected tuber.
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Hello all.   am very much inclined to agree with Eric on this.  The =
likely bacterium is probably similar to Erwinia carotovorum.  Once the =
infection has started it is nearly impossible to cure.  I would dig it =
up, examine it carefully, scoop out any soft parts with a clean =
(sterilized) sharp-edged spoon--or curved knife noting the =
discoloration, and then take out any discolored part that is not soft.  =
Then pack the cavity with a chlorine-releasing scouring powder, such as =
Comet, and set it aside to dry.  
Examine it in a week, wash out the scouring powder.  If there has been =
no further advance of the infection, (assessed by the change  in =
coloration having advanced  to unaffected parts of the tuber)--set it =
aside, replant it or treat it as you would, if it had not gotten =
infected.  Then cross your fingers and hope.  Sometimes this works. This ==
works well for iris rhizomes, which also require being set in direct =
sunlight for a month or more .  This will sometitmes start the =
develoment of accessory buds which guarantee further potential growth.  =
I don't know whether this would help for arisaema. 

The reason the infection is nearly impossible to get rid of, is because =
the bacterium releases a toxin or enzyme and spreads itself in advance =
of where it appears to be, visually .  If the tuber is big, and has any =
accessory buds on it, your chances are better than if it is small and =
has none.  


----- Original Message ----- 
From: Eric Gouda 
To: ARISAEMA-L at NIC.SURFNET.NL 
Sent: Wednesday, June 13, 2007 3:26 AM
Subject: Re: ARISAEMA-L Digest - 11 Jun 2007 to 12 Jun 2007 (#2007-78)




Onderwerp: Re: New Arisaema 
Van: "Jim McClements, Dover, DE z6" <JimMcClem at AOL.COM> 
Datum: Tue, 12 Jun 2007 13:59:57 EDT 


In a message dated 6/12/07 10:32:25 AM, myorchid at COMCAST.NET writes:



recently added an A. speciosum ('Himalayan Giant' ) to my garden. =
It arrived in good condition. The plant has already flowered and seeds =
are forming. I planted it immediately. The soil, which is a blend of =
peat, sand and organic material, drains quickly. When it arrived the 3 =
leaves were curled into a tube shape. I expected the leaves to  continue ==
to open and the plant to gain strength throughout the remainder of the =
summer. Instead, the plant seems to be going dormant. The stem is soft =
and starting to fall over. I dug down and checked the tuber. It is firm =
and feels healthy. Is my assessment that the plant is going dormant =
sound valid? Any suggestions that will help the plant to a better next =
spring?



I hate to be the bearer of bad tidings, but my experience is that =
when that happens, the prognosis is grave! Check the tuber again in a =
month and it's likely to have softened a bit.

I've no idea why this happens, but have wondered about the =
possibility of some non-visible damage to the tuber in the shipping =
process that still allows for the first year's growth to occur but then =
proves fatal. Unfortunately, that's been what's happened to at least 50% ==
of my acquisitions from certain sources.

Jim
Most likely it is a bacteria infection. I got a tuber of 20 cm in =
diameter (maybe more than 1 kg) of A.ciliatum var. liubaense and it was =
not treated well (damaged with the digging it out). It got soft and =
rotted, but it lost only the outside of the tuber and a much smaller =
tuber was left of about 7 cm in diameter that survived and flowering =
every year.
Maybe it is better to get it out of the soil and leave it to dry. I'm =
not a specialist in growing, but it worked for my huge tuber.

Eric

-- 
My email address has been changed to:
____               ____ E.J.Gouda at uu.nl _        =
http://botu07.bio.uu.nl
/ ___|_ __(_) __   / ___| ___  _   _  __| | __ _    Tel.:+31(0)30 =
2539281
| |__ | '__| |/ _| | |  _ / _ \| | | |/ _` |/ _` |   Office: =
Harvardlaan 2
| |___| |  | | (_  | |_| | (_) | |_| | (_| | (_| |   NL - 3584 CV  =
Utrecht
\____|_|  |_|\__|  \____|\___/ \___/ \__,_|\__,_|   THE NETHERLANDS  =
(NL)
Curator of UNIVERSITY BOTANIC GARDENS,  PO Box 80.162, NL-3508 TD =
UTRECHT 
\ Listowner: Alpine-L  Arisaema-L Brom(elia)-L Aeonium-L Passiflora-L  ==
/
\__ Bulbs-L Penstemon-L Trillium-L (@Nic.SurfNet.NL) & FloraPix.nl =
__/
===========================
===========================
===================== Search the =
Arisaema-L archives & subscription options - =
http://listserv.surfnet.nl/archives/Arisaema-l.html 
Arisaema-L HOME & GALLERY: http://florapix.nl/Arisaema-L 

For help with this list, send an e-mail to the listowners at: =
Arisaema-L-request at nic.surfnet.nl =
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content=text/html;charset=ISO-8859-1>
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<DIV>Hello all.&nbsp; &nbsp;am very much inclined to agree with Eric on= 
this.&nbsp; The likely bacterium is probably similar to Erwinia 
carotovorum.&nbsp; Once the infection has started it is&nbsp;nearly 
impossible&nbsp;to cure.&nbsp; I would dig it up, examine it carefully, =
scoop 
out any soft parts with a clean (sterilized) sharp-edged spoon--or =
curved knife 
noting the discoloration, and then take out any discolored part that is =
not 
soft.&nbsp; Then pack the cavity with a chlorine-releasing scouring =
powder, such 
as Comet, and set it aside to dry.&nbsp; </DIV>
<DIV>Examine it in a week, wash out the scouring powder.&nbsp; If there =
has been 
no further advance of the infection, (assessed by the =
change&nbsp;&nbsp;in 
coloration having advanced &nbsp;to unaffected parts of the tuber)--set =
it 
aside, replant it or treat it as you would, if it had not gotten =
infected.&nbsp; 
Then cross your fingers and hope.&nbsp; Sometimes this works.&nbsp;This =
works 
well for iris rhizomes, which also require being set in direct sunlight =
for a 
month or more&nbsp;.&nbsp; This will sometitmes start the develoment of= 
accessory buds&nbsp;which guarantee further potential growth.&nbsp; I =
don't know 
whether this would help for arisaema.&nbsp;</DIV>
<DIV>&nbsp;</DIV>
<DIV>The reason the&nbsp;infection is nearly impossible to get rid of, =
is 
because the bacterium releases a toxin or enzyme&nbsp;and spreads itself ==
in 
advance of where it appears to be, visually .&nbsp; If the tuber is 
big,&nbsp;and has any accessory buds on it, your chances are better than ==
if it 
is small and has none.&nbsp; </DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;</DIV>
<DIV>----- Original Message ----- </DIV>
<BLOCKQUOTE dir=ltr 
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV 
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B> 
<A title=e.j.gouda at UU.NL href="mailto:e.j.gouda at UU.NL">Eric =
Gouda</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A =
title=ARISAEMA-L at NIC.SURFNET.NL 
=
href="mailto:ARISAEMA-L at NIC.SURFNET.NL">ARISAEMA-L at NIC.SURFNET.NL</A>==
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, June 13, 2007==
3:26 
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: ARISAEMA-L Digest==
- 11 Jun 
2007 to 12 Jun 2007 (#2007-78)</DIV>
<DIV><BR></DIV><BR>
<BLOCKQUOTE =
cite=mid:ARISAEMA-L%25200706130001091730.4FBB at NIC.SURFNET.NL 
type="cite">
<TABLE class=header-part1 cellSpacing=0 cellPadding=0 =
width="100%" 
border=0><TBODY>
<TR>
<TD>
<DIV class=headerdisplayname style="DISPLAY: =
inline">Onderwerp: 
</DIV>Re: New Arisaema</TD></TR>
<TR>
<TD>
<DIV class=headerdisplayname style="DISPLAY: inline">Va=n: =
</DIV>"Jim 
McClements, Dover, DE z6" <A class=moz-txt-link-rfc2396E= 
=
href="mailto:JimMcClem at AOL.COM>">&lt;JimMcClem at AOL.COM&gt;</A></TD></=TR=
>
<TR>
<TD>
<DIV class=headerdisplayname style="DISPLAY: =
inline">Datum: </DIV>Tue, 
12 Jun 2007 13:59:57 EDT</TD></TR></TBODY></TABLE><BR><FONT=2=0
face=arial,helvetica><FONT face=Geneva color=#000000 size==2 
family="SANSSERIF"><BR>In a message dated 6/12/07 10:32:25 AM, <A= 
class=moz-txt-link-abbreviated 
href="mailto:myorchid at COMCAST.NET">myorchid at COMCAST.NET</A> 
writes:<BR><BR><BR></FONT></FONT>
<BLOCKQUOTE 
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: =
rgb(0,0,255) 2px solid; MARGIN-RIGHT: 0px" 
cite="" type="CITE"><FONT face=arial,helvetica><FONT =
face=Geneva 
color=#000000 size=2 family="SANSSERIF">recently added =an A. =
speciosum 
('Himalayan Giant' ) to my garden. It arrived in good condition. =
The plant 
has already flowered and seeds are forming. I planted it =
immediately. The 
soil, which is a blend of peat, sand and organic material, drains =
quickly. 
When it arrived the 3 leaves were curled into a tube shape. I =
expected the 
leaves to&nbsp; continue to open and the plant to gain strength =
throughout 
the remainder of the summer. Instead, the plant seems to be going =
dormant. 
The stem is soft and starting to fall over. I dug down and checked ==
the 
tuber. It is firm and feels healthy. Is my assessment that the =
plant is 
going dormant sound valid? Any suggestions that will help the =
plant to a 
better next spring?<BR></FONT></FONT></BLOCKQUOTE><FONT 
face=arial,helvetica><FONT face=Geneva color=#000000 size==2 
family="SANSSERIF"><BR><BR>I hate to be the bearer of bad tidings=, =
but my 
experience is that when that happens, the prognosis is grave! Check =
the 
tuber again in a month and it's likely to have softened a =
bit.<BR><BR>I've 
no idea why this happens, but have wondered about the possibility of ==
some 
non-visible damage to the tuber in the shipping process that still =
allows 
for the first year's growth to occur but then proves fatal. =
Unfortunately, 
that's been what's happened to at least 50% of my acquisitions from =
certain 
sources.<BR><BR>Jim</FONT></FONT></BLOCKQUOTE><FONT =
color=#000000><FONT 
size=2><FONT face=Geneva>Most likely it is a bacteria infection=. I =
got a tuber 
of 20 cm in diameter (maybe more than 1 kg) of A.ciliatum var. =
liubaense and 
it was not treated well (damaged with the digging it out). It got soft ==
and 
rotted, but it lost only the outside of the tuber and a much smaller =
tuber was 
left of about 7 cm in diameter that survived and flowering every 
year.<BR>Maybe it is better to get it out of the soil and leave it to =
dry. I'm 
not a specialist in growing, but it worked for my huge 
tuber.<BR><BR>Eric<BR></FONT></FONT></FONT><PRE class=moz-signature==
cols="300">-- 
My email address has been changed to:
____               ____ <A class=moz-txt-link-abbreviated =
href="mailto:E.J.Gouda at uu.nl">E.J.Gouda at uu.nl</A> _        <A =
class=moz-txt-link-freetext =
href="http://botu07.bio.uu.nl">http://botu07.bio.uu.nl</A>
/ ___|_ __(_) __   / ___| ___  _   _  __| | __ _    Tel.:+31(0)30 =
2539281
| |__ | '__| |/ _| | |  _ / _ \| | | |/ _` |/ _` |   Office: =
Harvardlaan 2
| |___| |  | | (_  | |_| | (_) | |_| | (_| | (_| |   NL - 3584 CV  =
Utrecht
\____|_|  |_|\__|  \____|\___/ \___/ \__,_|\__,_|   THE NETHERLANDS  =
(NL)
Curator of UNIVERSITY BOTANIC GARDENS,  PO Box 80.162, NL-3508 TD =
UTRECHT 
\ Listowner: Alpine-L  Arisaema-L Brom(elia)-L Aeonium-L Passiflora-L  ==
/
\__ Bulbs-L Penstemon-L Trillium-L (@Nic.SurfNet.NL) &amp; =
FloraPix.nl __/
</PRE>=========================
===========================
======================= 
Search the Arisaema-L archives &amp; subscription options - 
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<p>
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