Bill Shoemaker wshoemak at
Mon Aug 6 16:41:31 EDT 2001

Resistance to Bt is not new. Diamondback Moth, a serious pest of Brassicas,
was found to have resistant populations in Hawaii in the late 80's, before
genetic engineering of the Bt toxin gene. It was clear from the beginning
that widespread use of the Bt gene in plants would lead to resistance in the
major lepidopteran pests. It's been a waste to use it on major monocrops,
where it's impact  is less important than it is as an organic insecticide.
Such is commerce...

Bill Shoemaker
Sr Research Specialist, Food Crops
Univ of Illinois - St Charles Hort Research Center

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