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re: Re: *!?#@! CROWN VETCH - reply

>What I would like to know is why IDOT is planting non-native wildflowers
>and plants like crown vetch along Ilinois roadways when we have expert
>botanists and ecologists on staff with DNR that can tell them exactly what
>they should and should not be planting?  The lack of communication between
>state departments is ridiculous.  They have all of this expertise at their
>fingertips and they don't even utilize it.  This is a perfect example of
>the left hand not knowing what the right hand is doing in state government.
>
>
>
>>All the comments regarding crown vetch should lead everyone to realize that
>>any non-native actively promoted by highway departments, etc. for erosion
>>control is likely to lead to problems later on.  The properties that make a
>>plant desireable for erosion control on new roadsides are precisely the same
>>ones that make it a noxious weed in almost any other situation--rapid spread
>>and agressive growth!
>>                       --Helen Parker
>>
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>
>
>Ruth A. Green, Greenhouse Manager; Supportive Scientist
>Illinois Natural History Survey, Center for Biodiversity
>607 East Peabody Drive, Champaign, IL  61820
>Office:  217-333-7091   FAX:  217-333-6294
>Email:  rgreen@mail.inhs.uiuc.edu
>
>
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Ruth just a quick comment regarding your letter.  Crown Vetch is
practically worthless as far as erosion control simply because it down not
provide ground cover beneath its canopy.  Grasses tiller to form sod and
thus give the best soil protection.  When mixed with a good matrix of forbs
they have long term community stability.

The Iowa DOT no longer plants it since they found the steep right-of-ways
were deeply rilled (2 to 3 feet), and now is planting nearly all natives
grasses and forbs.

From Central Iowa

Carl Kurtz

Carl Kurtz
515-477-8364
cpkurtz@netins.net 


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