Backstory: Introduced in 1995, Syngenta’s Bt176 was developed originally to be resistant to the European corn borer and later, root worm. (The corn contains a bacterium that produces a protein that is toxic to the insects that feed on it.) HT corn (HT stands for herbicide tolerant) is resistant to herbicides like glyphosate and has been developed by multiple companies, including DeKalb, Monsanto, Syngenta, Pioneer Hi-Bred and Bayer CropScience. Some genetically modified corn is “stacked” with both traits.
The Latest News: Genetically modified corn has dramatically reduced the pest population of the European corn borer, a benefit to the farmers who plant the less-expensive conventional corn seed, as well. Conventional corn plantings also serve to limit the development of herbicide-resistant weeds. In 2010, nearly 70 percent of U.S. farmland planted in corn used a GE crop.
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