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Northern Illinois Agriculture

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Weed escapes, a sign of future issues?

Posted by Russel Higgins - Weeds

The 2013 planting season brought with it several challenges, for some that included the inability to spray a soil applied residual herbicide in their soybean. To limit or slow the spread of resistant weeds, university weed specialists have been recommending a two pass program including the use of a soil applied residual herbicide. While some northern Illinois fields still had acceptable control with a total post program based on glyphosate, a growing number did not. Waterhemp samples from northern Illinois have been forwarded to the University of Illinois to determine if they are glyphosate resistant. For more information on the screening process read Dr. Aaron Hagers June 17th Bulletin article

http://bulletin.ipm.illinois.edu/?p=1194


Other problematic weeds in northern Illinois soybean fields in 2013 include Giant ragweed and Lambsquarter. Send me an email and let me know how your fields are faring, we would like to be aware of emerging weed issues!

rahiggin@illinois.edu



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