marc at marc at
Mon Aug 6 17:03:08 EDT 2001

Ya know it seems that a rule of biology should be that any
pesticide or toxin can and eventually will create a
population that does not find it toxic.

Marc Nameth

Bill Shoemaker wrote:
> 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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