Horseweed (Marestail) Management In No-Till

The focus has been on planting corn, but don't forget about the weeds. In addition to getting preemergence herbicides applied to the corn acres, burndown applications on no-till soybean fields should be a top priority. Timely application of burndown herbicides simplifies controlling many winter annual weeds, particularly horseweed (marestail). Once the stems on horseweed belong to elongate the probability of successful control diminishes rapidly.  

 

Target control of horseweed while it is in the rosette stage.

 

When selecting burndown treatments, be sure to consider the likelihood of resistant biotypes in the field.  Glyphosate (HG 9) and HG 2 (ALS) resistant populations are widespread across the state.  Including 1 pt 2,4-D LVE or 1 oz Sharpen to glyphosate will increase the consistency of horseweed control, even in fields without glyphosate resistance. Remember that there is a 7 day planting restriction for soybean following 2,4-D application.

 

Video: predictive weed Management saves on herbicide costs and increases yield potential

Gowan Canada is partnering with Geco Strategic Weed Management to help Canadian growers take a strategic approach to weed control through data-driven prediction and planning.

Geco’s technology uses data and AI to map where weeds have been over the past five years and predict where patches are likely to emerge next season. These insights allow farms and retailers to plan ahead and target actions in the most challenging areas.

“Our technology enables the question: if you could know where your most problematic patches are and where they are spreading to, what could you do differently? That’s what our technology makes possible,” said Greg Stewart, CEO of Geco. “Many of our farms are already using our prescriptions along with Gowan products, so this collaboration is a natural next step.”