Not all Bt hybrids are alikeBy: Joan Olson Some BT hybrids have shown powerful control of European corn borer (ECB) and outstanding protection against yield loss. In 1997 university trials, Bt... Refuge Critical To Bt SuccessBy: Joan Olson Jim Koenigs, McIntire, IA, tried Bt corn when it was first introduced, in 1996. "We had heavy corn borer pressure and saw enough in our plot to know we... |
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