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sweet clovers/prairies

Hi James:
     I did not have a chance to get to Shaw upon my visit to Missouri but
did see Paint Brush, Fiendly and Drovers Priaires.  As you indicated, they
are really worth seeing.  Many thanks.  Will see Shaw on one of my next
trips to that state.  On my way back to Michigan, I visited the Schulenberg
Prairie at the Morton Arboretum in Illinois.  As you know, the initial
efforts in that restoration project began in the 60's (2nd oldest
restoration in the nation I believe).  I was struck with the amount of
Yellow Sweet Clover in that prairie.  Such reinforced my view that this
alien must be vigorously controlled.  Our fields were full of this species
when we started our prairie reconstruction in Michigan in 1993.  I know
have this species pretty well under control due to widespread use of
herbicides (Roundup and MecAmine D) via field spraying with my tractor and
spot spraying with a 2 gallon hand sprayer.  I believe that this treatment
is superior to mowing or burning in the control of this species under our
conditions.  It is important to note that our strategy is to plant the warm
season (C4) native prairie grasses first, forbs are not planted until the
alien species (e.g., Yellow/White Sweet Clovers, Canada/Bull Thistles in
our fields) are under control.
Cliff Welsch


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