Resistant weeds are on the rise, but industry experts say growers can take a few key steps to address or avoid resistance in their fields.
Tips on Managing Glyphosate Resistance
Experts suggest the following tips to reduce the impact of resistance in fields:
- Begin with clean fields and control weeds early. Do this via a burndown and/or preemergence application of a residual herbicide.
- Scout your fields regularly, identify weeds and their location in the field, and respond quickly to changes in weed populations. "Growers should scout their fields for changes in weed population — particularly weeds that survive a herbicide application. Even subtle changes can be an early indicator of a potential weed resistance problem and can rapidly become a field- or farm-wide problem if they are not addressed quickly," said Dan Westberg, Ph.D., technical market manager with BASF.
- Institute an integrated weed management program that employs multiple modes of action.
- Follow label directions closely to achieve optimal performance. Pay close attention to rate and timing information.
- Use other agronomic practices, such as crop rotation, cultivation and cleaning of equipment between fields, to diversify your weed control options.
Experts agree that one of the best methods for fighting resistance is incorporating different modes of action into a weed management strategy.