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- From: VBGarden@aol.com
- To: nafex@lists.ibiblio.org
- Subject: [NAFEX] Kaki Sudden Death Syndrome
- Date: Thu, 22 May 2003 12:52:03 EDT
Thanks for the observtions, Donna. Frustration, like misery, loves company....and this is one of those mysteries to be solved by observation, it seems.
More info on the topic - I emailed the author of the report on the syndrome, Greg Reighard at Clemson, this morning and he responded immediately -- which I deeply appreciated, such being the rarity it is in academic circles. (Said with a smile, Lucky!)
Here is his latest take on the problem, sent as replies to my email questions:
(Evident in Saijo but not two other varieties): Saijo is very sinsitive to this syndrome which now I believe is not a virus but a complex environment related syndrome. .....
(Article says tree will recover and set fruit?): The tree will never come back to be worth keeping long term. Remove it. The problem is exacerbated by low pH soils with Manganese. Persimmon is a manganese accumulator and kaki does not tolerate this when under other environmental stresses. Lime the soil to pH 6.5 but calcium only moves about 2 inches down into the soil per year so not until you get the top 12-18 cinches of soil at a pH of 6.0 and up will you see much of a difference. Take leaf samples for analyses to see what the manganese concentrations are. .....
(Assume no treatment if a virus?): Once again, no virus but the soil may be too acidic and the problem could occur again.
So, that's the latest.
Somehow the presence of the black streaks seems pathogenic - like a disease pathogen is present - to me. Anyone have ideas about that?
Sybil
stuck in the seeminly perpetual mud in Virginia....
-
[NAFEX] Kaki Sudden Death Syndrome,
VBGarden, 05/20/2003
- <Possible follow-up(s)>
- [NAFEX] Kaki Sudden Death Syndrome, VBGarden, 05/22/2003
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