hort.net Seasonal photo, (c) 2006 Christopher P. Lindsey, All Rights Reserved: do not copy
articles | gallery of plants | blog | tech blog | plant profiles | patents | mailing lists | top stories | links | shorturl service | tom clothier's archive0
Gallery of Plants
Tech Blog
Plant Profiles
Mailing Lists
    Search ALL lists
    Search help
    Subscription info
Top Stories
sHORTurl service
Tom Clothier's Archive
 Top Stories
New Trillium species discovered

Disease could hit Britain's trees hard

Ten of the best snowdrop cultivars

Plant protein database helps identify plant gene functions

Dendroclimatologists record history through trees

Potato beetle could be thwarted through gene manipulation

Hawaii expands coffee farm quarantine

Study explains flower petal loss

RSS story archive

Re: Bleach water

  • Subject: Re: [iris-photos] Bleach water
  • From: John I Jones <jijones@usjoneses.com>
  • Date: Wed, 25 Aug 2004 14:19:05 -0700

On Aug 24, 2004, at 10:28 AM, Harold Peters wrote:

> To all on bleach thread.
> According to two knowledgeable sources, sodium hypochlorite is not 
> that effective a bacteriaicide. This info was from Gigi Hall, a very 
> knowledgeable irisarian.

Not according to the EPA and multiple other accredited sources.

I know Gigi and while she knows a lot about irises, in the ten years or 
so that she was active in my club (until she droped out of irisdom), 
she always promoted bleach as an effective bactericide on irises. For 
years the EPA and medical professions have used  sodium hypochlorite as 
a sanitizing agent. It is the primary chemical used in sanitizing 
swimming pools.

>  The only proven effectiveness is on mustard seed fungus at 0.5% 
> hypochlorite for 20 to 30 minutes.

The current documentation on the UC Davis website does not mention 
bleach as an effective agent against mustard seed fungus, nor does any 
other agricultural school that I can find.  tThey do mention that hot 
water may be effective as well as the bromide and Terraclor (PCNB))

Never have I heard Gigi mention bleach as being effective against crown 
rot (mustard seed fungus).

> The second knowledgeable source was a University of California - Davis 
> professor on a locally produced TV garden program. His comment about 
> the recommendation to dip pruning tools between cuts that the only 
> effect was going to be a rapidly corroded pruner.

I can't speak to this, but it certainly flies in the face of 
recommendations by many other studies.

> My shipping permit requires me to hypochlorite dip treat rhizomes 
> before shipping so I do a lot of dipping.

If it is so ineffective, why do they require it of you? (rhetorical 

All this is not to say that new information does not invalidate 
previously held beliefs, but in this case,  there certainly have not 
been a plethora of studies substantiating new information, quite the 

John                | "There be dragons here"
                          |  Annotation used by ancient cartographers
                          |  to indicate the edge of the known world.

List owner iris@hort.net and iris-photos@yahoogroups.com
USDA zone 8/9 (coastal, bay)
Fremont, California, USA
Director, American Iris Society
Chairman, AIS Committee for Electronic Member Services

Online Iris Checklists at: http://www.irisregister.com

Subscribe to iris@hort.net by sending:
Subscribe iris
To: majordomo@hort.net
Archives at: http://www.hort.net/lists/iris-talk/

Subscribe to iris-photos at:
Archives at:http://www.hort.net/lists/iris-photos/

------------------------ Yahoo! Groups Sponsor --------------------~--> 
Make a clean sweep of pop-up ads. Yahoo! Companion Toolbar.
Now with Pop-Up Blocker. Get it for free!

Yahoo! Groups Links

<*> To visit your group on the web, go to:

<*> To unsubscribe from this group, send an email to:

<*> Your use of Yahoo! Groups is subject to:

Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index

 © 1995-2017 Mallorn Computing, Inc.All Rights Reserved.
Our Privacy Statement