Re: Re: gardenwriters Digest, Vol 14, Issue 20

**"* C* <e*@rcn.com>**

no, no, no, yess and noo.  will say more later.

Turns out Not brought by nursery stock, though everything may be
contaminated in the bioenvironment now...It is not the same P. ramorum found
on the first nursery stock + that is killing the oaks.  Same family,
different genes,  probably came by winds in super wet high atmosphere clouds
that travel around the earth.  Turns out there are multiple P ramorum,
seven, maybe more, killing the oaks, contaminating entire environment, but
plants differ in suscepability.  As you know, plenty of P all over the world
forever.  You know, as scientific techniques evolve with the discovery, it
can make all the first pronouncements very  wrong.   That is what has
happened here.  And the laws re quarantines are hurting get rid of oak
debris which is infected to  travel the roads to the scientific composters
because of the laws, yet Cal Trans offers 101 side areas as dump sites to
the commercial arborists.  Things are not, repeat, not, what WAS in the
news.
Research through website: www.suddenoakdeath.org, but do not use old stuff.
Call Dave Rizzo at Davis.  Email him article to critique, his address probab
ly there in website.  Otherwise, ask my wonderful friend, Bruce Hagen, Ed of
Western Arborist to comment on article, use my name, our relationship, your
wonderful jobs.  brucehagen@fire.ca.gov.  He is sanest head. best teacher,
calmest person.

----- Original Message ----- 
From: "Saxon Holt" <sholt@saxonholt.com>
To: <gardenwriters@lists.ibiblio.org>
Sent: Saturday, March 13, 2004 12:46 PM
Subject: [GWL] Re: gardenwriters Digest, Vol 14, Issue 20

>
> > I know this is a serious issue... A CA invasive expert emailed me to
> > say: "more recent information is that other nurseries in the area
> > also are turning up positive on first test.  My sense is that SOD is
> > probably fairly widespread in nurseries in southern California and
> > this problem will get worse."
> >
>
> As the expert suspects, the pathogen Phytophthora ramorum probably can be
> found not only on much nursery stock but most all evergreen plants in
> Northern California.  I know it has been found on Toyon, Madrone, and
> Manzanita and Arctostaphyllos.  As an airborn fungus, the only reason it
has
> not turned up more places is that it hasn't been tested.
>
> It is going to appear more and more as more nurseries test.  The only
reason
> it was found in Southern California is because a nursery in Washington
State
> traced its infected plants back to Monrovia.
>
> So that everyone in all parts of the country do not panic, remember it
> exists on many plants as host without apparent harm.  Though it is still
> such a new problem we must be cautious on all fronts. Different species
> Phytophthora fungus are wide spread and well known in the agriculture
world
> as the cause of many diseases from the Irish potato famine to root rot.
>
> While the name "Sudden Oak Death" has an obvious if unfortunate title, I
> might suggest that journalist in our field be careful in using the term in
> regards to other plants.  The fungus, Phytophthora ramorum appears on lots
> of plants, Sudden Oak Death only manifests on certain Oaks.  It is silly
to
> suggest we don't use the term in our reporting on other plants but we
> needn't suggest the appearance of the pathogen on other plants will kill
> them.
>
> Hoping to keep things stirrd up....
>
> Saxon Holt
>
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