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Herbicide resistant traits in Minnesota and North Dakota

rows of green soybean plants in a field.

Herbicide-resistance traits have created additional weed control options in alfalfa, canola, corn, soybeans, sugarbeets and wheat. However, traits may create confusion surrounding which herbicides can be applied safely and legally to the various crop trait packages. Misapplications due to confusion can be very costly and embarrassing for the producer and collaborating partners.

Weed management to prevent herbicide-resistant weeds requires a well-thought-out strategy. Best management practices should consider control of weeds present in the field as well as control during the cropping sequence. A weed management strategy including an assortment of herbicide mixtures along with nonchemical options is necessary to preserve the value of herbicides and herbicide-resistant traits.

It is important to read and follow label guidelines when applying herbicides to any crop. The label of some glyphosate products indicates they can be applied to Roundup Ready® and glyphosate-tolerant crops. Most glyphosate labels state the products are for use in Roundup Ready® crops or in crops that have the Roundup Ready® gene. Other glyphosate labels have language stating the glyphosate product can be applied to glyphosate-tolerant crops.

The tables below help clarify which herbicide products can be applied to various trait packages. You should always check seed tags and herbicide labels to ensure misapplications do not occur.

Herbicide trait tables

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CAUTION: Mention of a pesticide or use of a pesticide label is for educational purposes only. Always follow the pesticide label directions attached to the pesticide container you are using. Remember, the label is the law.

Tom Peters, Extension sugarbeet agronomist; Jared Goplen, Extension educator - crops; Joe Ikley, Extension weed specialist, North Dakota State University; Dave Nicolai, Extension educator - crops

Reviewed in March 2020

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