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Re: chemical weed control

andrew james swanson wrote:
> 
> In trying to establish some production plots of local seed of prairie
> species does anyone have knowledge on chemicals that work well on
> controlling weeds (mostly annual) with little or no damage to the
> desired species?  This would be in a direct seed situation with a
> monoculture or single species in their own separate plot.  Preplant,
> post plant and or post emergence.  For plants such as :
> pale purple coneflower
> showy sunflower
> oxeye false sunflower
> rattlesnake master
> liatris spp.
> compass plant
> butterfly milkweed
> others...?
> Has anyone tried planting roundhead bushclover in an area treated with
> treflan?



There is a new herbicide manufactured by American Cyanamid called
"Plateau".  This product is cleared to be applied to many different
forbs.

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