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Response to mike_c (Reply #10)

Fri Mar 9, 2012, 05:25 PM

26. Or to re-phrase what you have said -

Organic farmers tolerate and accept a certain level of infestation controlled by methods such as crop rotation. They farmers use a specific Bt sparingly only when they must deal with a massive infestation of a specific insect. They kill say, all but 2% of the corn borers in their particular fields that particular year. The general population of corn borers in other fields still contains the 98% susceptible to Bt. So corn borers in any given field can be controlled with Bt as needed. Various types of Bt attack specific organisms and are harmless to other animals.

GM corn kills all but 2% of the harmful insects across field after field after field every year, until all the corn borers remaining are descendants of those who are resistant to the Bt. It's the same pattern seen with petrochemical pesticides and antibiotics.

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