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Re: Weaver - early prairie research

John,

Steve Vaughn a Weedologist at the Northern Regional Labs, USDA, in Peoria identified allelopathy in Garlic Mustard and wrote a paper on it. I believe it can be accessed from the web but I don't know how.
Steve's work phone number is 309/ 681-6344.
Email: vaughnsf@ncaur.usda.gov

Good luck. I hope Steve doesn't kill me for putting out this info.

Doug Franks
Jubilee Prairie Dawgs

----- Original Message ----- From: "JOHN A RAASCH" <jaraasch@wisc.edu>
To: <prairie@hort.net>
Sent: Wednesday, August 16, 2006 9:50 AM
Subject: Re: Weaver - early prairie research


Hi.

I have a related question. I'm looking for a list of research papers describing allelopathy -- the chemical process
that plants use to keep other plants from growing too close to them -- displayed by native
midwestern plants. My
literature searches have not been successful. It seems this would be very useful information
for confronting weed
problems. For exmaple... I'm planning on planting a few black walnuts. All other factors
being equal, would it be
useful to plant them near the crown vetch I'd like to eradicate? Does jugulone (spelling?)
inhibit crown vetch
growth?

Can anyone direct me to a resource about allelopathy displayed by native plants... and weeds
for that matter?

THANKS!!

J. A. Raasch
Southwest WIsconsin

----- Original Message -----
From: Scott Lenharth <scott.lenharth@gmail.com>
Date: Tuesday, August 15, 2006 11:41 am
Subject: Weaver - early prairie research
To: prairie@hort.net

Hi all, at the recent North American Prairie Conference I picked up
a copy
of Weaver's "The Prairie", documenting prairie research back in the
1930s.He repeatedly makes reference to the amount of bare space
created by certain
forbs, noting the impact to hay production - less grass.  I wonder
if this
information contributed to the "de-forbing" of prairie areas by
manual and
chemical means, and if this in turn has influenced declines in
grasslandbirds - under the assumption that bare space is a good
thing in prairies.
Anyone have any comments or further information about this??

Thanks,
Scott Lenharth
http://www.texasprairie.org

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