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Syngenta Field Report

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The Syngenta Field Report features information and experts from Syngenta sharing observations about issues growers are dealing with in the fields.

Glyphosate resistance spreads

Dec 30, 2010

Chuck Foresman

Glyphosate is one of the most important tools growers have to manage their crops -- and that won't change anytime soon.  However, weed resistance, especially to glyphosate, continues to be a real and growing problem in the U.S. 

In fact, North Dakota recently joined the list of states with confirmed glyphosate-resistant weed populations, adding common ragweed on the Herbicide Resistance Action Committee's online list.

Since 2001, Syngenta has fought on the front lines in the battle against glyphosate resistance, advising that over reliance on glyphosate herbicides would lead to resistance – and it clearly has. To combat this development, I recommend overlapping, integrated weed control strategies:

·         Rotate crops

·         Use more than one mode of action for weed control

·         Keep crops as weed-free as possible throughout the season; strive for effective, season-long weed control


 For more information, visit

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