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permaculture - Re: [permaculture] Using leaves from clopyralid-treated lawn?

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  • From: Kate Halstead <rockyprairie@earthlink.net>
  • To: permaculture <permaculture@lists.ibiblio.org>
  • Subject: Re: [permaculture] Using leaves from clopyralid-treated lawn?
  • Date: Tue, 6 Nov 2007 14:10:54 -0800 (GMT-08:00)

I'd be wary at the very least. Chances are you won't be able to help raking
some grass as well as the leaves. If you are putting the resulting compost on
a sensitive crop, it might not be a good idea.

Here's a list of studies done on the effects of clopryalid in Washington
state. http://www.puyallup.wsu.edu/soilmgmt/Clopyralid.htm

Kate

-----Original Message-----
>From: Paul d'Aoust <paul@heliosville.com>
>Sent: Nov 6, 2007 1:18 PM
>To: permaculture@lists.ibiblio.org
>Subject: [permaculture] Using leaves from clopyralid-treated lawn?
>
>Hi there, folks. Recently I saw a discussion -- may have been on this
>list; may not have -- about the herbicide called clopyralid.
>
>http://en.wikipedia.org/wiki/Clopyralid
>
>Apparently it persists for a long time in soils, unlike a lot of other
>herbicides, and has caused problems for many large composting operations
>in the States. It's especially nasty for Asteraceae, Fabaceae, and
>Solanaceae, three of my favourite plant families.
>
>Anyway, my question is this: do you think that leaves raked from a lawn
>that you suspect has been treated with clopyralid (it was given a
>weed-and-feed spray in early summer) would cause any problems in compost
>or sheet mulch? There are so many leaves in my townhouse complex, and
>it'd be a shame to not use them.
>
>Thanks in advance,
>Paul d'Aoust
>
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