As the growing season winds down, now is an ideal time for Ontario farmers to assess the effectiveness of their weed control strategies and prepare for the next growing year.
Dr. Holly Byker, Agronomy Manager at the Ontario Crop Research Centre in Winchester, emphasizes the importance of scouting fields to identify weeds that escaped control throughout the season.
Common offenders in Ontario in 2025 include pigweed, lamb’s quarters, grasses, velvet leaf, and ragweed.
Byker notes that environmental conditions, such as rainfall patterns and temperature fluctuations, play a significant role in herbicide performance.