Roundup-resistant weeds trouble Midwestern farmers - KFVS12 News & Weather Cape Girardeau, Carbondale, Poplar Bluff

Roundup-resistant weeds trouble Midwestern farmers

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ELSBERRY, Mo. (AP) - The emergence of weeds resistant to a popular herbicide is causing headaches for Midwestern farmers, forcing them to change how they manage weeds after years of spray-it-and-forget-it simplicity.

The St. Louis Post-Dispatch (http://bit.ly/1oSW66G) reports weed experts say half the nation's farmland is dealing with the problem in some form or other. 

That includes farmers in Missouri and Illinois who have encountered half a dozen different species immune to glyphosate, the generic name for Monsanto's wildly popular herbicide Roundup.

Farmers are increasingly coming across aggressive varieties of superweeds that can't be killed by the herbicide that revolutionized modern farming.

The problem comes from using the same herbicide over and over on the same field with the same crop.

Information from: St. Louis Post-Dispatch, http://www.stltoday.com

Copyright 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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