Weed resistance is expanding. According to market research*, more than 46% of farmers reported weed resistance to 1 herbicide group while more than 20% of growers reported weed resistance to 2 herbicide groups.
Not only is resistance to several herbicide groups expanding geographically, concern about resistance to a few key herbicide groups is also increasing. The study shows that growers are more concerned about resistance to the following herbicides:
- Group 2 (ALS inhibitors)
- Group 4 (synthetic auxins)
- Group 9 (glyphosate)
- Group 27 (HPPD inhibitors)
Resistance to Group 14 (PPO inhibitors) is also a growing concern across the Midwest. It’s common to be concerned about resistance expanding when it’s already confirmed in the field.
But growers without reported resistance are also concerned about resistance spreading. The study shows from 2014 to 2016, concern about Group 2 resistant weeds increased from about 15% to almost 19% of growers without Group 2 resistance.
From choosing the right inputs to determining crop rotations, staying ahead of resistant weeds can feel challenging. With the number of resistant weeds growing, it’s driving a need for more powerful and effective management strategies to defeat these tough resistant weeds.
The right weed management strategy can put growers’ minds at ease. Finding the best management strategy starts with understanding problem weeds in the field and incorporating good agronomic practices, such as narrow row spacing and increased plant population.
We also recommend using herbicides with multiple effective modes of action early in the season to manage weed resistance. Herbicides like Acuron® and Acuron® Flexi for corn and BroadAxe® XC and Boundary® 6.5 EC for soybeans contain multiple effective modes of action and active ingredients that work together to control the toughest weeds before they emerge.
View the videos below to learn more about how you can manage resistance in 2017.
To learn how you can better manage resistance in your field, visit www.ResistanceFighter.com.
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*2016 Syngenta market research.
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