As glyphosate-resistant weeds expand (see article above), many weed control options -- especially for tough broadleaf weeds -- have become less effective. One strong option for controlling giant ragweed, waterhemp, and Palmer amaranth is Acuron®, from Syngenta®. In 2015, the National Agri-Marketing Association named Acuron as product of the year.

The problem of glyphosate resistance is pushing growers to use more pre-emerge residual herbicides at higher use rates and with more than one mode of action and active ingredient.

Acuron offers three modes of action and contains four active ingredients: bicyclopyrone, mesotrione, S-metolachlor, and atrazine. It has shown itself to provide broad-spectrum control of 70+ broadleaf weeds and grasses, including the following, in corn.

• Giant ragweed
• Common ragweed
• Palmer amaranth
• Waterhemp
• Marestail
• Cocklebur
• Morning glory
• Russian thistle

Acuron can be applied in a one-pass program at a rate of 2.5-3.0 qt./ac. (actual rate dependent on soil organic matter), from 28 days pre-plant to 12-inch corn. A two-pass option is also effective in combination with other herbicides. For those who cannot use atrazine, Acuron Flexi offers a combination of S-Metolachlor, mesotrione, and bicyclopyrone without the atrazine. This can be applied from 28 days pre-plant to 30-inch corn at a rate of 2-2.25 qt./ac.  View Acuron label.

Talk to your Federated Agronomist to discuss your particular weed control challenges and how Acuron may fit your needs.