Re: disinfecting beardless iris

 

Check out:  http://www.physan.com/ 

It's looks like a toss up to me. Bleach doesn't last long because of the stability and the Physan is supposed to be biodegradable. (If it kills everything what's degrading it?) Neither would likely come out the pipe of your local water treatment plant. The Physan might have an advantage if the diluted solutions are stable in that you could use less over time. I don't see any information about that. The Physan might also cause less damage to the plants, roots especially.
(Bleach is easy to over do.) Then again, it's one more thing to buy and most of us have bleach in the house already.

Rod

From: Ken Walkup <krw25@cornell.edu>
To: "iris-species@yahoogroups.com" <iris-species@yahoogroups.com>
Sent: Wednesday, August 24, 2011 5:54 AM
Subject: RE: [iris-species] disinfecting beardless iris

 
Ken,
                Iâve used bleach for all kinds of beardless irises, with a plain water rinse, and never had any adverse effects.  I have also used Physan (used to be Triple Action 20), which says itâs good against pretty much all pathogens, and breaks down within 48 hours.  I have wondered if thereâs any advantage; possibly the Physan is safer to dispose of than the bleach.  Does anyone know the ins and outs of this?
                Ken Walkup
 
From: iris-species@yahoogroups.com [mailto:iris-species@yahoogroups.com] On Behalf Of Kenneth Walker
Sent: Tuesday, August 23, 2011 7:22 PM
To: iris-species@yahoogroups.com
Subject: Re: [iris-species] disinfecting beardless iris
 
 
If I share iris through the mail (for example the Aril Society sale), I want to insure that they are free of pests before I get them inspected. The dilute bleach approach seems common for bearded and arilbred iris;  I was wondering how applicable it is across the genus.

Ken

On 8/23/2011 2:03 PM, C*@aol.com wrote:
 
Why are you needing to do it?
 
AMW

 
 
-----Original Message-----
From: Kenneth Walker k*@astound.net
To: iris-species i*@yahoogroups.com
Sent: Tue, Aug 23, 2011 4:46 pm
Subject: [iris-species] disinfecting beardless iris
 
I'm looking for experience and advice disinfecting beardless iris.
Bearded iris rhizomes are quite tolerant of a 10% bleach solution; a
bath of 10 or 15 minutes followed by a thorough rinse does a nice job of
killing any pathogens on the surface. I've done this a few times with
beardless iris, but am wondering how safe this is in general. Are there
types of iris, perhaps ones with sensitive roots, where this will
seriously damage the plants.

Ken Walker
Concord
 


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