Herbicide Tolerant Crops

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Herbicide Tolerant Crops are crops genetically engineered to survive being sprayed with a specific herbicide. The first generation of HT crops included Roundup Ready Crops, made by Monsanto to resist spraying by its best selling herbicide Roundup (glyphosate) and Liberty Link Crops, which resist spraying by glufosinate. Roundup Ready Crops in particular were widely adopted, resulting in the evolution of glyphosate resistant weeds. With the reduced efficacy of Roundup Ready crops due to the so-called 'superweeds,' biotech companies began creating crops resistant to other herbicides. For example, Monsanto created soybeans resistant to the herbicide dicamba.[1] Meanwhile, Dow created crops resistant to the herbicide 2,4-D.[2]

List of Herbicide Tolerant Crops

Most herbicide tolerant crops fall into one of two categories:

GE crops tolerant of other herbicides include:

2,4-D Tolerant Crops:

ACCase Inhibitor Tolerant Crops:

ALS-Inhibitor Tolerant Crops:

Bromoxynil Tolerant Crops:

Dicamba Tolerant Crops:

Imidazolinone Tolerant Crops:

Isoxaflutole Tolerant Crops:

  • Bayer: Glyphosate and Isoxaflutole Tolerant Soybean (FG72), under review by the USDA for deregulation

Sulfonylurea tolerant crops:

Articles and resources

Related SourceWatch articles


  1. Ken Anderson, "Dicamba-tolerant soybeans take step forward," Brownfield Ag News, January 6, 2011, Accessed July 17, 2012.
  2. Andrew Pollack, "Dow Corn, Resistant to a Weed Killer, Runs Into Opposition," New York Times, April 25, 2012, Accessed July 17, 2012.

External resources

External articles