Ground level view of rows of corn Mindy Ward
KEEP IT CLEAN: Farmers like clean, weed-free rows of corn. AMVAC is bringing two new tools in 2021 to help control resistant waterhemp, Palmer amaranth and giant ragweed.

New herbicides control resistant weeds in corn

AMVAC announces two tools it considers the “next generation in weed resistance management.”

Farmers have two more tools to help them fight against herbicide-resistant weeds in corn.

AMVAC announced what it considers the “next generation in weed resistance management” with Impact Core and Sinate Herbicide.

Lasting control

The first technology is Impact Core. Impact Core is a postemergence corn herbicide that controls grass and broadleaf weeds. This herbicide contains acetochlor, which controls weeds by inhibiting growth of seedling shoots.

Nathaniel Quinn, AMVAC marketing manager for corn, soybeans and sugarbeets, says that this new herbicide has an “industry-leading level” of acetochlor that will provide long-lasting residual weed control. It will help with the control of waterhemp, Palmer amaranth and giant ragweed.

“Impact Core fits the way you farm and delivers needed control across a wide range of field conditions,” Quinn says. It provides control across a range of weed densities, as early postemergence following a planned preplant or preemergence application.

“Additionally, it provides reliable delivery of needed control when wet conditions prevent a timely preplant or preemergence application,” he adds.

Safe on corn

The second technology from AMVAC is Sinate Herbicide. This new herbicide offers control of herbicide-resistant weeds in LibertyLink corn.

“Sinate Herbicide will be known for being gentle on LibertyLink corn, but wicked on weeds,” Quinn says. Its combination of Impact Herbicide and glufosinate works on weeds such as waterhemp, Palmer amaranth and giant ragweed.

With more plants becoming resistant to glyphosate, the herbicide industry turned to glufosinate. Glufosinate is an amino acid that works by inhibiting plant enzyme activity, which is critical to plant metabolism.

Glufosinate applications result in reduced enzyme and increased ammonia levels in the plant’s tissues, which causes photosynthesis to stop and, ultimately, the plant dies.

Quinn says the efficacy levels of glufosinate found in Sinate are needed to help farmers battling tough weeds in corn on corn acres or historical problem fields.

“In those fields, a grower needs control they can count on,” he adds. “And they know that conditions must be just right for the glufosinate to realize its maximum potential.” He says by combining Impact Herbicide with glufosinate, farmers will find more consistent weed control.

Sinate also is a safe option to use in LibertyLink corn. “The inherent tolerance of the LibertyLink corn trait glufosinate helps Sinate herbicide deliver outstanding corn safety," Quinn says.

TAGS: Corn
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