Bt cotton resistance found
Date: 13.2.2008
A pest insect known as **bollworm** is the first to evolve resistance in the field to plants modified to produce an insecticide called Bt, according to a new research report.
**Bt-resistant populations of bollworm**, Helicoverpa zea, were found in more than a dozen crop fields in Mississippi and Arkansas between 2003 and 2006.
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