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  [Aroid-l] nematodes
From: "?goston J?nos" agoston.janos at citromail.hu> on 2006.05.12 at 23:29:31(14178)
Dear All,

There were some mails about nematodes in
Amorphophallus. Today I received Amorphophallus yunnanensis and A.
asterostigmatus from Thailand (and some gingers...) There were some holes on the
tuber, but they are dried off now.
They could be nematodes as well, but I think when
we grow Amos in pots there are small risk to have a nematode infection. Our
garden soil is allready infected by nematodes, but it is not serious. As I was
mailing with a Dutch Zantedeschia breeder he told me that the biggest problem is
with Erwinia carotovora subsp. carotovora. This is an anaerob bacteria
which eats pectine (this material sticks the plant cells to eachother) and
becouse the wet and anaerob enviroment the tubers start to rot with a
distgusting smell (it is worse than the Dracunculus's). As I know the
nematodes and the Erwinias symthomes are very similar, so I would like to point
out that it can be an Erwinia rot as well as nematodes. To be sure is it
nematodes or Erwinia is to get some rasped tissue from the meeting point of
healthy and rotten parts and see if there is any nematodes.

As I'm not a Plant Protection Consulting
Engineer (yet) any professional help or advice is very wellcome on this
subject!

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