Rot Prevention

From: "WEAVER,BILL (HP-USA,ex3)" bill_weaver at hp.com> on 2001.12.11 at 00:32:48(7876) At a recent orchid society meeting, the speaker mentioned that he uses hydrogen peroxide (3%) to treat orchids that have experienced a problem with rot. Basically, he waters the plant on its regular schedule, but for three waterings he uses hydrogen peroxide. His reasoning was that apparently plants (at least orchids) produce a weak hydrogen peroxide solution at the interface between leaf and stem when the plant is dropping a diseased leaf. His reasoning being that if the plant produces it inside, it should have no problem with it being applied on the outside. Long story, short question. Does anybody have any idea if this procedure might help combat rot in dormant potted amorphophallus tubers? Bill Weaver +More bill_weaver@hp.com

From: mburack at mindspring.com> on 2001.12.11 at 15:36:55(7878) I know I am going to get smacked for this, but.... regardless, why would this be "better" than using one of the MANY fungicide products on the market? Cost? As far as I know, Hydrogen peroxide has great "disenfectant properties" but I dont know if you would find it to be a broad spectrum fungicide. aroid-l@mobot.org wrote: +More > At a recent orchid society meeting, the speaker mentioned that he uses hydrogen peroxide (3%) to treat orchids that have experienced a problem with rot. Basically, he waters the plant on its regular schedule, but for three waterings he uses hydrogen peroxide. His reasoning was that apparently plants (at least orchids) produce a weak hydrogen peroxide solution at the interface between leaf and stem when the plant is dropping a diseased leaf. His reasoning being that if the plant produces it inside, it should have no problem with it being applied on the outside. Long story, short question. Does anybody have any idea if this procedure might help combat rot in dormant potted amorphophallus tubers? Bill Weaver bill_weaver@hp.com

From: magrysbo at shu.edu on 2001.12.11 at 20:11:46(7881) I dunno Bill. I gently scrubbed problem Arisaema tubers with it and let them air dry. Cleans off all schmutz and I believe that any litter critters onboard were jumping for their lives. Bonaventure Magrys +More pring.com> To: Multiple recipients of list AROID-L Sent by: cc: aroid-l@mobot. Subject: Re: Rot Prevention org 12/11/2001 10:37 AM Please respond to aroid-l I know I am going to get smacked for this, but.... regardless, why would this be "better" than using one of the MANY fungicide products on the market? Cost? As far as I know, Hydrogen peroxide has great "disenfectant properties" but I dont know if you would find it to be a broad spectrum fungicide. aroid-l@mobot.org wrote: > At a recent orchid society meeting, the speaker mentioned that he uses hydrogen peroxide (3%) to treat orchids that have experienced a problem with rot. Basically, he waters the plant on its regular schedule, but for three waterings he uses hydrogen peroxide. His reasoning was that apparently plants (at least orchids) produce a weak hydrogen peroxide solution at the interface between leaf and stem when the plant is dropping a diseased leaf. His reasoning being that if the plant produces it inside, it should have no problem with it being applied on the outside. Long story, short question. Does anybody have any idea if this procedure might help combat rot in dormant potted amorphophallus tubers? Bill Weaver bill_weaver@hp.com

From: Denis denis at skg.com> on 2001.12.11 at 21:13:28(7882) The great thing about hydrogen peroxide is that is a good topical disinfectant and it is applied, does its thing instantaneously and then breaks down in the process into water and oxygen. No obnoxious organic molecules to pollute the environment (or if you are a nurseryman poison your workers). As far as treating Amorphophalli tubers with it, it is non specific in its action and will take out the good microflora as well as the pathogenic organism. It would be ok if you suspect rot problems are happening or going to happen. However, I would not want to start wipe out the equilibrium that exists in the Amorphophallus root zone around the rhizome. If you are going to all the trouble of dipping the pots in the stuff you might as well just bare root them and store them in an inert material that does not support rotting. But then again I don't do much with Amorphophalli and so what do I know. Denis at Silver Krome Gardens Homestead Florida +More mburack@mindspring.com wrote: > > I know I am going to get smacked for this, but.... regardless, why would this be "better" than using one of the MANY fungicide products on the market? Cost? > > As far as I know, Hydrogen peroxide has great "disenfectant properties" but I dont know if you would find it to be a broad spectrum fungicide. > > aroid-l@mobot.org wrote: > > At a recent orchid society meeting, the speaker mentioned that > he uses hydrogen peroxide (3%) to treat orchids that have experienced > a problem with rot. Basically, he waters the plant on its regular > schedule, but for three waterings he uses hydrogen peroxide. His > reasoning was that apparently plants (at least orchids) produce a > weak hydrogen peroxide solution at the interface between leaf and > stem when the plant is dropping a diseased leaf. His reasoning being > that if the plant produces it inside, it should have no problem with > it being applied on the outside. > > Long story, short question. Does anybody have any idea if this procedure > might help combat rot in dormant potted amorphophallus tubers? > > Bill Weaver > bill_weaver@hp.com

From: "Julius Boos" ju-bo at email.msn.com> on 2001.12.11 at 21:15:34(7884) I wonder why one would 'treat' a rare and valuable plant tuber with an experimental at best dip into a potentially damaging and experimental solution when there are tested and proven cures such as 'BANROT' CAPTAN and MANY others available that are SPECIFICALLY developed for these rot problems? I sure would not try it on any of my tubers that were and ARE becoming MUCH more difficult if not impossible to obtain and even ship! Julius +More >>I dunno Bill. I gently scrubbed problem Arisaema tubers with it and let them air dry. Cleans off all schmutz and I believe that any litter critters onboard were jumping for their lives. Bonaventure Magrys pring.com> To: Multiple recipients of list AROID-L Sent by: cc: aroid-l@mobot. Subject: Re: Rot Prevention org 12/11/2001 10:37 AM Please respond to aroid-l I know I am going to get smacked for this, but.... regardless, why would this be "better" than using one of the MANY fungicide products on the market? Cost? As far as I know, Hydrogen peroxide has great "disenfectant properties" but I dont know if you would find it to be a broad spectrum fungicide. aroid-l@mobot.org wrote: > At a recent orchid society meeting, the speaker mentioned that he uses hydrogen peroxide (3%) to treat orchids that have experienced a problem with rot. Basically, he waters the plant on its regular schedule, but for three waterings he uses hydrogen peroxide. His reasoning was that apparently plants (at least orchids) produce a weak hydrogen peroxide solution at the interface between leaf and stem when the plant is dropping a diseased leaf. His reasoning being that if the plant produces it inside, it should have no problem with it being applied on the outside. Long story, short question. Does anybody have any idea if this procedure might help combat rot in dormant potted amorphophallus tubers? Bill Weaver bill_weaver@hp.com

From: magrysbo at shu.edu on 2001.12.12 at 00:50:07(7887) It was a 1% solution on only several tubers, mostly Arisaema, that had been dug up for storage, and were rotting out despite application of other compounds. These tubers have no live roots during dormancy and survive kept absolutely dry. +More Bonaventure Denis > cc: Sent by: Subject: Re: Rot Prevention aroid-l@mobot. org 12/11/2001 04:15 PM Please respond to aroid-l The great thing about hydrogen peroxide is that is a good topical disinfectant and it is applied, does its thing instantaneously and then breaks down in the process into water and oxygen. No obnoxious organic molecules to pollute the environment (or if you are a nurseryman poison your workers). As far as treating Amorphophalli tubers with it, it is non specific in its action and will take out the good microflora as well as the pathogenic organism. It would be ok if you suspect rot problems are happening or going to happen. However, I would not want to start wipe out the equilibrium that exists in the Amorphophallus root zone around the rhizome. If you are going to all the trouble of dipping the pots in the stuff you might as well just bare root them and store them in an inert material that does not support rotting. But then again I don't do much with Amorphophalli and so what do I know. Denis at Silver Krome Gardens Homestead Florida mburack@mindspring.com wrote: > > I know I am going to get smacked for this, but.... regardless, why would this be "better" than using one of the MANY fungicide products on the market? Cost? > > As far as I know, Hydrogen peroxide has great "disenfectant properties" but I dont know if you would find it to be a broad spectrum fungicide. > > aroid-l@mobot.org wrote: > > At a recent orchid society meeting, the speaker mentioned that > he uses hydrogen peroxide (3%) to treat orchids that have experienced > a problem with rot. Basically, he waters the plant on its regular > schedule, but for three waterings he uses hydrogen peroxide. His > reasoning was that apparently plants (at least orchids) produce a > weak hydrogen peroxide solution at the interface between leaf and > stem when the plant is dropping a diseased leaf. His reasoning being > that if the plant produces it inside, it should have no problem with > it being applied on the outside. > > Long story, short question. Does anybody have any idea if this procedure > might help combat rot in dormant potted amorphophallus tubers? > > Bill Weaver > bill_weaver@hp.com

From: magrysbo at shu.edu on 2001.12.12 at 00:52:14(7888) PS I used a very soft and very worn old toothbrush. BWM "Julius Boos" +More sn.com> cc: Sent by: Subject: Re: Rot Prevention aroid-l@mobot. org 12/11/2001 04:15 PM Please respond to aroid-l ----- Original Message ----- To: Multiple recipients of list AROID-L Sent: Tuesday, December 11, 2001 3:11 PM Subject: Re: Rot Prevention I wonder why one would 'treat' a rare and valuable plant tuber with an experimental at best dip into a potentially damaging and experimental solution when there are tested and proven cures such as 'BANROT' CAPTAN and MANY others available that are SPECIFICALLY developed for these rot problems? I sure would not try it on any of my tubers that were and ARE becoming MUCH more difficult if not impossible to obtain and even ship! Julius >>I dunno Bill. I gently scrubbed problem Arisaema tubers with it and let them air dry. Cleans off all schmutz and I believe that any litter critters onboard were jumping for their lives. Bonaventure Magrys pring.com> To: Multiple recipients of list AROID-L Sent by: cc: aroid-l@mobot. Subject: Re: Rot Prevention org 12/11/2001 10:37 AM Please respond to aroid-l I know I am going to get smacked for this, but.... regardless, why would this be "better" than using one of the MANY fungicide products on the market? Cost? As far as I know, Hydrogen peroxide has great "disenfectant properties" but I dont know if you would find it to be a broad spectrum fungicide. aroid-l@mobot.org wrote: > At a recent orchid society meeting, the speaker mentioned that he uses hydrogen peroxide (3%) to treat orchids that have experienced a problem with rot. Basically, he waters the plant on its regular schedule, but for three waterings he uses hydrogen peroxide. His reasoning was that apparently plants (at least orchids) produce a weak hydrogen peroxide solution at the interface between leaf and stem when the plant is dropping a diseased leaf. His reasoning being that if the plant produces it inside, it should have no problem with it being applied on the outside. Long story, short question. Does anybody have any idea if this procedure might help combat rot in dormant potted amorphophallus tubers? Bill Weaver bill_weaver@hp.com

From: "WEAVER,BILL (HP-USA,ex3)" bill_weaver at hp.com> on 2001.12.17 at 22:29:15(7934) Okay, maybe I stirred up a hornets nest here. What I was trying to do was find a way to insure that my dormant tubers come back next year. I store my dormant plants under the bench still potted up in their pots. I do not disturb them to re-pot until I see signs of growth. During the time they are dormant I find it a good idea to keep them very slightly moist so that they don't desiccate during their dormancy. I was just wondering if it might be a better idea to use hydrogen peroxide instead of water as the moistening agent during dormancy. Bill Weaver +More bill_weaver@hp.com -----Original Message----- Sent: Monday, December 10, 2001 4:05 PM To: 'aroid-l@mobot.org' Subject: Rot Prevention At a recent orchid society meeting, the speaker mentioned that he uses hydrogen peroxide (3%) to treat orchids that have experienced a problem with rot. Basically, he waters the plant on its regular schedule, but for three waterings he uses hydrogen peroxide. His reasoning was that apparently plants (at least orchids) produce a weak hydrogen peroxide solution at the interface between leaf and stem when the plant is dropping a diseased leaf. His reasoning being that if the plant produces it inside, it should have no problem with it being applied on the outside. Long story, short question. Does anybody have any idea if this procedure might help combat rot in dormant potted amorphophallus tubers? Bill Weaver bill_weaver@hp.com

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