Help: RUST

George R. Stilwell, Jr. GRSJr at WORLDNET.ATT.NET
Sat Aug 28 21:32:52 CEST 2004

This isn't just any rust. It's Arisaema rust. The organism is identified in
the archives. It's highly contagious. So I believe the advice is to
sacrifice the diseased plants to save the healthy plants. Seems reasonable
to me.


At 10:21 AM 8/28/2004 -0500, you wrote:
>Hello all.  Since there are approximately 100,000 species of plant rusts
>around the world, i f one's garden is infected, I think it might be
>premature to destroy one's collection.  It's like killing the baby to cure
>its cold.
>All diseases (in general) are dependent on an interaction of factors,
>presence  of the disease organism, resistance of the host, conditions in the
>external environment favoring appearance of the disease.
>Rusts, for the most part are hindered by dry weather, enhanced by moist
>conditions and lack of circulating air.
>The Gusman's note in their book, unfortunately is insufficient to learn
>about control.  I had a lot of what appeared to be rust come in on gladiolus
>bulbs this spring, and it appeared to be internal to the corms  rather than
>on the outside.  I have seen it on plants in my yard and I regard it as a
>sign that the plant is lacking in some kind of nutrient, or necessity.  My
>advice is, treat it with a broad well-rounded liquid fertilizer with a full
>range of micronutirients.  Don't use manure or composted material from an
>unknown source, wait until next year to see what transpires.  Consider an
>aspirin drench for each plant of approximately 2 tabs per gallon of water.
>I use this on all plants which are in any way endangered ansd have saved
>many.  Refefences are available on the internet using keywords such as
>aspirin, acetylsalicylic acid, SAR (syemic acquired resistance.).  Good lu
>ck and let us know how you do. Regards, Adam in Glenview, IL USDA Zone 5a
>----- Original Message -----
>From: "George R. Stilwell, Jr." <GRSJr at WORLDNET.ATT.NET>
>Sent: Saturday, August 28, 2004 7:08 AM
>Subject: Re: Help: RUST
> > Claus,
> >
> > Sorry. The rust problem hasn't changed over the years as far as I know.
> > You could E-mail some of the members that posted on the subject to
> > see if they have additional information.
> >
> > I believe Aroid-L also has a thread in their archives devoted to the
> >
> > The word "rust" does not appear in the title of any of the published
> > in our Bibliography. But in the section on "Pests and Diseases" in 'The
> > Genus Arisaema', the Gusmans do discuss it briefly.
> >
> > Their advice: destroy the plants by burning them.
> >
> > Ray
> >
> > At 11:26 AM 8/28/2004 +0200, you wrote:
> > >Ray,
> > >I was astonished that the most recent message on this topic is more than
> > >years old when I checked the achive before writing initial message. I
> > >thought that somebody might have some more up to date
> > >experience/information.
> > >Claus
> >

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