The Price of Resistance

Don’t let weed resistance rob your bottom line

Weed resistance is growing in the United States—its impact far-reaching and costly. Herbicide classes like glyphosate no longer reliable against weeds like waterhemp and Palmer amaranth. But the LibertyLink® system offers a reliable solution to help growers manage resistance and maintain profitability.

Increasing Resistance

Two-thirds of U.S. growers say they have experienced glyphosate resistance on their farms*. Weed resistance plays a big role in lost ROI. It continues to grow at an exponential rate in both acreage and number of species across the United States. Rotating high-yielding LibertyLink® varieties and Liberty® herbicide can result in decreased weed management costs and increased profits.

Weed resistance plays a big role in lost ROI. It continues to grow at an exponential rate in both acreage and number of species across the United States.
Missouri grower Wayne Stoll saw a significant yield increase when he switched from Roundup Ready® soybeans to LibertyLink soybeans.

Weed Threats

Weeds like Palmer amaranth and waterhemp can be pervasive threats to a grower’s bottom line. Palmer amaranth was first confirmed resistant to glyphosate seven years ago. A single plant can produce up to 1.5 million seeds and grow to more than eight feet tall! North Carolina State University and the University of Georgia studies show a soybean yield loss of 68 percent from one Palmer amaranth per square foot. Of the 12 states that have glyphosate-resistant waterhemp, three have shown resistance to multiple modes of action, according to WeedScience.org.

Associated Costs

As herbicides like glyphosate lose their effectiveness, growers are faced with an increase in weed management costs, a loss of maximum yield potential and possible harm to their legacy. In 2011, University of Tennessee specialists estimated that Tennessee lost more than $200 million due to resistant weeds. That number does not include the $35 to $100 per acre growers spent on hand weeding.

“Last year, my LibertyLink beans yielded 8 bushels an acre more than my Roundup Ready soybeans. At $15 a bushel that is a gross income increase of $37,500 just for planting different genetics.” –Wayne Stoll, Missouri soybean grower

LibertyLink Works

Wayne Stoll from Corter, Mo., saw a significant yield increase when he switched from Roundup Ready® soybeans to LibertyLink soybeans.“Last year my LibertyLink beans yielded 8 bushels an acre more than my Roundup Ready soybeans. At $15 a bushel, that is a gross income increase of $37,500 just for planting different genetics,” Stoll says.

Bryan Curry, a grower from Olmsted, Ill., also knows firsthand the impact weed control has on yields. “If I can get an extra five bushels an acre on my LibertyLink beans, that will add an extra $10,000 to my bottom line,” Curry says.

A Future with LibertyLink

There are no new herbicide modes of action on the horizon, so preservation of existing technologies like LibertyLink is essential to manage weeds and stay profitable. LibertyLink technology and Liberty herbicide offer the most reliable management solution for weeds resistant to glyphosate and other herbicide classes, resulting in a healthier bottom line. Read more about what other growers have experienced at TheLibertyLinkStory.com.

Works Cited

  • 2011 Beck Ag Survey of LibertyLink Users.
  • CropScience.Bayer.us. Bayer CropScience, 2010. Web. March 20, 2013.
  • Weed Science. N.p., n.d. Web. 20 Mar. 2013.

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