Herbicide Tolerant Corn

Herbicide Tolerant Corn is corn that has been genetically engineered to survive being sprayed with a specific herbicide. The first generation of HT corn included Roundup Ready Corn, made by Monsanto to resist spraying by its best selling herbicide Roundup (glyphosate). Roundup Ready Crops 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, Dow created corn resistant to the herbicide 2,4-D.

Adoption Rates in the U.S.
Following the introduction of herbicide tolerant corn, its adoption by U.S. farmers grew. The USDA offers data on the percent of corn in the U.S. that is herbicide tolerant between 2000 and 2012:
 * 2000: 7%
 * 2001: 8%
 * 2002: 11%
 * 2003: 15%
 * 2004: 20%
 * 2005: 26%
 * 2006: 36%
 * 2007: 52%
 * 2008: 63%
 * 2009: 68%
 * 2010: 70%
 * 2011: 72%
 * 2012: 73%

Related SourceWatch articles

 * Roundup Ready Crops
 * Liberty Link Crops
 * Dicamba Resistant Crops
 * 2,4-D Resistant Crops
 * 2,4-D Resistant Corn
 * Glyphosate Resistant Weeds
 * Monsanto
 * Dow
 * Glyphosate
 * Roundup
 * 2,4-D
 * Agent Orange
 * Biotechnology
 * Genetically Modified Organisms

External articles

 * Dan Charles, "Farmers Face Tough Choice On Ways To Fight New Strains Of Weeds," NPR, March 7, 2012.
 * Jack Kaskey, "Attack of the Superweed: New strains resist Roundup, the world’s top-selling herbicide," Business Week, September 8, 2011.
 * Marcia Ishii-Eiteman, "Monsanto's Superweeds & Superbugs," Pesticide Action Network North America, GroundTruth blog, September 8, 2011.
 * Michael J. Coren, "Monsanto-Resistant Weeds Take Root, Raising Food Prices," Fast Company, July 20, 2011.
 * Tom Philpott, "Monsanto's "Superweeds" Gallop Through Midwest," Mother Jones, July 19, 2011.
 * William Neuman and Andrew Pollack, "Farmers Cope With Roundup-Resistant Weeds," New York Times, May 3, 2010.