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Part 4: Multiple Modes of Action Control Tough Weeds

November 18, 2016

In this edition, growers in Iowa and Minnesota share their experiences with Acuron® and Acuron Flexi corn herbicides in 2016. Iowa growers singled out waterhemp as their toughest weed to control, while Minnesota growers cited both waterhemp and giant ragweed.

Extremely wet conditions in Minnesota in August made in-field photography impossible, but growers there were happy with the performance of both Acuron and Acuron Flexi. Mike Anders, a grower and retailer from Nerstrand, Minnesota, said the tank mix flexibility and geographic flexibility in Acuron Flexi are especially beneficial to him since the product does not contain atrazine.

Here’s a recap:

July 27, 2016:


Reinbeck, Iowa: Matt Shoup’s field had a history of waterhemp pressure prior to treatment with Acuron. Acuron applied pre-emerge at 3 qt/A with nitrogen on April 18, 2016. Photo taken 100 days after treatment.

June 27, 2016:


Reinbeck, Iowa: Another field with a history of waterhemp pressure prior to treatment with Acuron. Acuron applied pre-emerge at 3 qt/A with 24 fl oz glyphosate and .5 lb atrazine on May 18, 2016. Photo taken 70 days after treatment.

June 27, 2016:


Traer, Iowa: Two views of the same row in a field that had waterhemp pressure prior to treatment with Acuron. Acuron applied pre-emerge at 3 qt/A on April 20, 2016. Photo taken 98 days after treatment.

August 24, 2016:


Hayward, Minnesota: Wet conditions prevented in-field photos, but grower and retailer Tim Westrum reported that Acuron performed well against his two toughest weeds: giant ragweed and waterhemp. A foundation rate of Acuron was applied pre-emerge and followed at a later date with an application of Halex® GT.

Check the Know More, Grow More Digest to read about Acuron performance in Ohio, Indiana and Michigan.

Explore our performance map to see how Acuron defeats tough weeds in your area. Did you use Acuron or Acuron Flexi this season? We want to see. Share your photos on social media using #toughweeds.

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All photos are the property of Syngenta or are used with permission.

© 2016 Syngenta. Important: Always read and follow label instructions. Some products may not be registered for sale or use in all states or counties. Please check with your local extension service to ensure registration status. Acuron is a Restricted Use Pesticide. Sale, use and distribution of Acuron Flexi in Nassau and Suffolk counties in the State of New York is prohibited. Acuron®, Halex®, the Alliance Frame, the Purpose Icon and the Syngenta logo are trademarks of a Syngenta Group Company.