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Re: [Aroid-l] amorphophallus SICK Looking bulb HELP
From: "D. Scott Taylor" <staylor at brevardparks.com> on 2004.11.16 at 06:35:37(12384)|
I have posted previously a couple of times about similar problems I
have had with paeoniifolius, and based on those communications I have
surmised that it can be a 'problem' species. Now I am wondering/hoping
that some clones are maybe less subject to this disorder. I have had
ongoing problems with 'rot' in this species, particularly with larger
tubers. I have tried cutting away the rot area and treating with
fungicides (I have tried Captan and Mancozeb). I have also tried
sulfur and treating lesions with bleach: sometimes this works and
sometimes not: often the rot will continue until much of the tuber is
consumed. Oddly enough, when I get rot on konjac, the simple cutting
away of the lesion seems to solve the problem, so these two species
seem different in this regard. The recommendation I have had is that
damaged tubers not be replanted, and also do not reuse planting media.
A well-drained media is also supposed to be very important. I have
tried drenching the soil with Mancozeb throughout the growing season,
and this really didn't seem to help; my suspicion at this point is the
the problem may not be fungal in origin: in fact, I have sent two
different samples to path labs with no definitive results. This
remains somewhat of a (frustrating!) mystery!!!
D. Scott Taylor
On Nov 15, 2004, at 9:11 AM, Greg Dorst wrote:
If it is injured or sick it finds its way to my house.
Paeoniifolius Bulb, received from my friend, appears to have an
injury from possible digging instrument used for its removal. It has
been out of the soil for about 4 weeks. The gash is about 7" long
and 4" wide. Ya it is a nice size one for sure. I have used a spoon
yesterday 11-14-04 and removed the "Mush" and "decay", and some
seemingly discolored tissue up to the point of clean healthy flesh.
I would like to save this bulb if possible. There is a few spots
remaining which appear as slight discoloration ( dark spots ) but
still, "semi firm" that would require deeper and more radical tissue
insult to remove. I would say that I extracted a good 15% of the
bulbs mass. Is there anything else which I should do other than say a
prayer? Is the extraction of the decay the proper means to save the
bulb? Is there a wonder application to end future decay? The soil
the plant was in, is it considered contaminated? My suggestion to
that was, " dump it and avoid the risk of any possible contamination
Gregg and Maggie Dorst
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D. Scott Taylor, Ph.D.
Central Region Land Manager
Brevard County Environmentally Endangered Lands Program
5560 N. US 1
Melbourne, Florida 32940
V: 321.255.4466 FAX 321.255.4499
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