North American Fruit Explorers mailing list at ibiblio

["Richard O'Barr" <aatopgunaa@mindspring.com>]

Pardon me but Fireblight is a bacteria; hence the agri-mycin sold for its
control.
                                      Topgun
----- Original Message ----- 
From: "Heron Breen" <breen@fedcoseeds.com>
To: "North American Fruit Explorers" <nafex@lists.ibiblio.org>
Sent: Tuesday, June 22, 2004 4:52 PM
Subject: Re: [NAFEX] Persimmon wilt, KSD & Fireblight.


>
> Pardon my ignorance, but is KSD an issue in Asia? Is anyone doing research
on this
> phenomenon? Wondering if my friend's Japanese language skills could be of
use...
> Heron Breen
> On Mon, 21 Jun 2004 00:29:23 EDT , Jwlehman@aol.com sent:
>
> >Hello all,
> >
> >
> >
> >It is highly unlikely that there is any connection between Fireblight and
> Persimmon Wilt. Fireblight is a fungus, Erwinia Amylovora and Persimmon
wilt,
> Cephalosporium diospyri. The spraying of agri-mycin and captan and the
symptoms
> stopping is likely coincidental.
> >
> >
> >
> >
> >
> >The cause of Kaki Sudden Death (KSD) is as some else wrote still unknown.
My
> personal belief is the shepherd hooking is more a symptom of dying kaki
regardless
> of the cause. I've also head reports that KSD was stopped by spraying
> Micronutrients and the symptoms appeared. I suspect that too was
coincidental.
> Manganese poisoning is still unproven but possible as well as winter cold
damage.
> I've also seen reports of KSD on kaki seedlings. Which would tend to
reduce the
> virginiana understock involvement, but not eliminate it's contributing to
a cause
> or causes.
> >
> >
> >
> >Kelly Jackson from Mississippi planted 550 grafted kaki trees to
establish a
> commercial kaki orchard some years back. She lives near Memphis, TN just
south of
> the Mississippi border. I asked her about Fireblight in her area, here was
her
> response:
> >
> >
> >
> >>>I know nothing about any [Fire] blight in my area to corollate.
> >
> >Few of my 550 Jiro and Ichi Kei Kai Jiro persimmon trees are still alive.
> >
> >The only way one of my trees lives "with" their virus is to send up root
stock.
> >
> >(Three of the trees that you grafted still live, but they are not Jiro
Persimmon
> trees.)
> >
> >
> >
> >It is still my opinion that my orchard does not have American Kaki wilt
disease.
> >
> >It has Sudden Kaki Death syndrome, which is totally fatal once the tree
is
> infected. Some trees just "last" longer than others before total death of
the
> graft.
> >
> >Sudden Kaki Death syndrome is not fatal to the root stock if it is an
American
> cultivar.<<
> >
> >
> >
> >The grafts which I made which she writes about was Jiro wood which I
personally
> cut from the UC Davis orchard where KSD never has been a problem. That
scion wood
> should have been clean of whatever causes it, if a disease. I grafted some
of them
> on American persimmon seedlings located near her dying orchard that have
never
> been grafted before, they should have been clean of disease brought on
with
> contaminated scion wood. They should have lived a few years, but didn't.
Most
> started showing typical KSD symptoms the following spring.
> >
> >
> >
> >Sorry to be of no help.
> >
> >
> >
> >Jerry
> >
> >
> >
> >
> >
> >
> >
> >
>
>
>
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