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Re: RE:Atrazine!

We have a problem with tall fescue in a 2yr old planting.Do you think
atrazine could be effective and how and when should it be applied?
Ed Cook
Southern Illinois


-----Original Message-----
From: Thomas Rosburg <thomas.rosburg@drake.edu>
To: prairie <prairie@mallorn.com>
Date: Saturday, August 21, 1999 8:31 AM
Subject: RE:Atrazine!


>Back in the late 80's I did research invesigating the effects of fire and
atrazine on prairie restoration (check Rosburg and Glenn-Lewin 1992, Proc.
of 12th N.A. Prairie Conference).  I did not see any evidence that the
prairie species we were working with were susceptible to atrazine.  Of
course none of the warm-season grasses are susceptible (they're like corn),
so the main concern is with the forbs.  My sense is that since atrazine
needs to be picked up by root systems in the upper portion of the soil
profile (thats why it is effective on annual weedy species), the
deeper-rooted prairie species don't absorb enough to do much damage.   I
would not be too concerned.  In fact you may get a better establishment.
Some of the best results (restoration of prairie species) that I saw in my
research were on the pastures where atrazine was applied.  It provided great
control on cool-season grasses.  I really think that, if used properly, it
is a herbicide that could be used effect!
> ively in prairie establishment.
>
>
>Thomas Rosburg
>Dept. of Biology
>Drake University
>Des Moines, Iowa
>515-271-2920
>thomas.rosburg@drake.edu
>
>
>On 7/19/99, prairie wrote:
>>Hello fellow prairie enthusiasts,
>>I am a grad student at Western Michigan University.  >Quite recently,
>>folks here have begun tossing around the idea of a >prairie restoration
>>on our campus of about 50 acres--yippie!!!  We've >been putting together
>>species lists, burning regimes, and coming up with >all sorts of research
>>projects.  The administration is very anxious to >get something planted
>>on this open area that for the past many years has >been farmed.  The
>>original plan was to seed it this fall.  Trouble >is, we just discovered
>>that it was treated with Atrazine last spring.  >We've been doing some
>>research on this troublesome chemical, and it seems >that it breaks down
>>in about 2 years or so on the surface, but leaches >down and takes much
>>longer to break down at deeper levels of soil.  How >have you who have
>>done restorations/plantings dealt with this?  Can >we go ahead and plant
>>this coming spring, and then hope that the Atrazine >will break down
>>quickly enough that by the time our forbs' roots >reach down that far,
>>they will not be affected?  We'd greatly appreciate >advice from folks
>>who've dealt with this specifically for prairie >plants.
>>
>>Thanks much,
>>Theresa Mau-Crimmins
>>x93mau@wmich.edu
>>
>>---------------------------------------------------
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>> Date: Mon, 19 Jul 1999 11:06:22 -0400
>> From: Theresa Mau-Crimmins <theresa.mau@wmich.edu>
>> Subject: Atrazine!
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