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Re: crown vetch chemical control

James-if the plants are still green in late fall try spraying with Stinger. 
We have found the most effective chemical controls are in late fall when the
plants are storing food in their roots.  

A friend of mine says every species has an Achilles' heel, it is just a
matter of finding it and thus dealing with the problem.  Many exotic legumes
stay green until there are below freezing temperatures, and thus in the
northern states, they can be sprayed when the prairie is dormant.  Be
careful, however,  prairie plants less than two years old will also stay
green and vunerable right up until the ground freezes.  

Carl Kurtz
Central Iowa


----------
>From: "James C. Trager" <James.trager@mobot.org>
>To: prairie@mallorn.com
>Subject: Re: crown vetch chemical control
>Date: Wed, Aug 16, 2000, 3:59 PM
>

>I'll second what Carl says. The prairie plantings at Shaw Arboretum 
>have the usual leguminous suspects for our area, the two Melilotus 
>spp., Lespedeza cuneata, Vicia villosa, and one which is unique to 
>our site, Lathyrus sylvestris. The latter, I've dubbed "prairie kudzu", 
>for its habit of clambering over and completely blanketing prairie 
>plants. The Lathyrus has resprouted with vigor after top-killing by 
>both Round-up and Garlon. Any ideas on this one???
>
>James C. Trager
>
>On 15 Aug 00, at 21:06, Carl Kurtz wrote:
>
>> Peg-it will work just fine, but it won't guarantee that you will be
>> rid of crown vetch forever.  If you burn the area in the future, you
>> may scarify new seed, and get new plants.  Keep up the procedure and
>> in 4 or 5 years you will have 'most' of it under control.  
>> 
>> Exotic legumes are one of the most difficult plants to get rid of,
>> they are too compatible with grasslands.  
>> 
>> Good Luck,
>> 
>> Carl Kurtz
>> Central Iowa
>> 
>> 
>> ----------
>> >From: PHutch6000@aol.com
>> >To: prairie@mallorn.com
>> >Subject: crown vetch chemical control
>> >Date: Tue, Aug 15, 2000, 8:25 PM
>> >
>> 
>> >Today I sprayed some crown vetch with Amine 400 2,4-D weed killer. 
>> >It is Dimethylamine salt of 2-4 dichlorophenoxipcelic acid 46.4% made
>> >by pbi/Gordon corp.  Is anyone familiar with this product, and might
>> >it work?  My next solution will be black plastic over the plants.  I
>> >hate chemical control.  Thank you for your replies. Peg Hutchison
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