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United States Department of Agriculture

Agricultural Research Service

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Butterflies and Bt corn
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Butterflies and Bt corn. Allowing Science to Guide Decisions.
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Bt corn registration extended

Based on a comprehensive review of scientific information by EPA, Bt corn registrants received an extended registration for insect-protected corn for an additional seven years.

The monarch research published in the Proceedings of the National Academy of Sciences and reviewed by the EPA clearly supports the conclusion that “Bt corn does not harm monarch butterfly populations” (EPA, 2001).

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Corn field


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Last Modified: 5/28/2015
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