Glufosinate Tolerant Soybean

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Glufosinate Tolerant Soybeans are genetically engineered soybeans that have had their DNA modified to withstand the herbicide Glufosinate. (Glufosinate is also referred to as Phosphinothricin and it is sold under the brand names Basta and Liberty.) All glufosinate tolerant soybean varieties are sold by Bayer CropScience under the brand name "LibertyLink."



  • July 31, 1996: U.S. deregulates AgrEvo's Glufosinate Tolerant Soybeans, GRS Transformation Events W62, W98, A2704-12, A2704-21, A5547-35[1]
  • January 1997: The U.S. EPA approves the use of glufosinate (sold by AgrEvo under the brand name "Liberty") for corn.[2]
  • March 1997: U.S. EPA updates its approval of Liberty, noting "Liberty Herbicide is for use only on corn and soybeans resistant to the active ingredient in this product."[3]
  • January 1998: Glufosinate tolerant soybeans plans to sell commercially in the U.S. under the brand name "LibertyLink"[4][5]
  • May 1998: AgrEvo decides to delay commercial sales of its glufosinate tolerant soybean seeds, pending import approval from the EU.[6]
  • June 8, 1998: U.S. deregulates AgrEvo's Glufosinate Tolerant Soybean, Event A5547-127
  • November 23, 1998: U.S. deregulates AgrEvo's Glufosinate Tolerant Soybean, Event GU262
  • March 1999: The introduction of glufosinate tolerant soybeans are delayed once again, pending import approval from both the EU and Japan.[7]
  • 1999: AgroEvo becomes Aventis CropScience following a merger.



  • 2011: Argentina approves Bayer's glufosinate tolerant soybeans. Bayer announced that it will not sell its GE soybeans in Argentina until it receives approvals for its other traits as well.[9]

Articles and resources

Related SourceWatch articles


  1. Determinations of Non-Regulated Status, USDA, Accessed August 9, 2012.
  2. Robert Steyer, "U.S. OKs Sale of German Herbicide; Weedkiller Akin to Monsanto Roundup," St. Louis Post-Dispatch, January 21, 1997.
  3. "Liberty Herbicide Label Change Underscores Importance of Hybrids Approved by AgrEvo," PR Newswire, March 7, 1997.
  4. Larry Stalcup, "Liberty Supplies Missing Weed Control Link," Soybean Digest, ISSN: 0038-6014, January 1998.
  5. Kurt Lawton, "Soybean Weed Control: Clash Of Technologies," Farm Industry News, ISSN: 0892-8312, February 1998.
  6. "AgrEvo Soybeans Delay," Chemical Week, p. 33, May 6, 1998.
  7. AgrEvo Delays Transgenic Soybean Sales, Chemical Week, March 17, 1999.
  8. "EU Approves Bayer Genetically Modified Soy Import," SeeNews Germany, September 8, 2008.
  9. ARGENTINA : Bayer CropScience gets consent for herbicide tolerant soybean technology," Tendersinfo News, August 25, 2011.

External resources

External articles