“You have to start clean. You cannot go out and plant into a field that has any live weeds in it anymore,” advises Phil Krieg, agronomic service representative for Syngenta. “You have to get rid of those in a burndown application. Secondly, you have to get good residual products applied to the soil that have effective multiple modes of action for the specific weeds that you’re trying to control.”
An effective weed control program starts early. Syngenta offers BroadAxe® XC and Boundary® 6.5 EC herbicides for pre-emergence weed control with long-lasting residual. These products can be followed by Flexstar® GT 3.5 herbicide, which is specifically formulated to combat soybean weeds that are difficult to control with glyphosate alone or are resistant to glyphosate and ALS inhibitors.
With the increased threat of weeds and expansion of glyphosate resistance this season, it’s vital to start with clean fields and a full rate of a pre-emergence herbicide. Staying vigilant throughout the season and applying a properly timed post-emergence herbicide can also keep weed populations low. These proactive decisions can reduce weed seed bank build up and delay the onset of herbicide resistance across the Midwest.
To learn more about BroadAxe XC, Boundary 6.5 EC and Flexstar GT 3.5, as well as other weed resistance management strategies, visit the Tools to Grow More Soybeans resource page. Join the conversation online – connect with us at social.SyngentaUS.com.