permaculture

[Mark <mpludwig@facstaff.wisc.edu>]

> Date: Fri, 31 May 2002 12:04:48 -0500
> From: Gloria <gloriafarms@famvid.com>
> Subject: Re: [grazersedge] Info on vinegar as a weed killer
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> At 12:35 PM 5/30/02 -0500, James, Roger L DATCP wrote:
> >Vinegar is, according to this story, quickly becoming a popular product in
> >the war on weeds.
>
> I've been using vinegar for weeds for years. A couple of years ago I wrote
> an article on the web about a large scale use of vinegar on our new farm to
> battle thistles. The results were nothing short of spectacular. Our farm
> had been overgrazed prior to our purchase of it and the pastures had been
> overtaken by thistles of a couple different species (Canadian and musk). We
> sprayed once through, hitting each thistle. We had to reapply on only a few
> of the largest plants. The grass kill was minimal in the immediate area
> around the thistles, and the grass came back and filled in extremely fast.
>
> When I spray vinegar, I spray the plain distilled variety, undiluted. It
> seems to work best in full sunshine, and when sprayed on a sunny day the
> tops of the weed will be black within hours. On a few large, mature weeds,
> I have sometimes gone back a week or two later with a second, selective
> spraying for final kill. We found that the most effective application
> technique for the largest musk thistles (which were over my head in height)
> was to kick them over and spray the vinegar in the shattered stalk. The
> slight extra effort to do this resulted in little second spraying. I can
> spray thistles in a pasture and not have to kill all the grass, which is
> hugely beneficial. Best of all, I don't have to "suit up" in protective
> clothing and a respirator to use vinegar, nor do I need to worry about
> getting an MSDS sheet on it, as it is merely salad dressing. :-)
>
>
> Gloria - Illinois Farmer
> Visit our farm website: http://hiddenoaksfarm.mybravenet.com
>
>
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Mark P. Ludwig
Poultry Research Lab
University of Wisconsin -Madison
608-262-1730 WK
608-846-7125 HM