General Discussion
In reply to the discussion: Organic Shmorganic -- Conventional fruits and vegetables are perfectly healthy for kids. [View all]NickB79
(20,367 posts)BT corn resists various corn borers by producing it's own BT toxin, a chemical found naturally in soil bacteria and licensed for use in organic farming.
It is entirely separate from Round-Up resistant corn.
As far as I know, there are NO plants that make their own Round-Up. Even if such a thing were possible, it's pointless, as Round-Up must be applied to the leaves of weed species, and unless there are corn stalks with built-in applicator nozzles to spray around them......
As for the concern about genetic diversity (or the lack thereof), it is a very valid concern. Unfortunately, even before GMO tech became commonplace, crop diversity was almost nil due to conventional hybrid crop techniques. We've been fucking up our crops genetic diversity long before we figured out how to splice genes across species lines.
http://en.wikipedia.org/wiki/Southern_corn_leaf_blight#Importance
"The disease, which first appeared in the United States in 1968, reached epidemic status in 1970 and destroyed about 15% of the corn belt's crop production that year.[1] In 1970 the disease began in the southern United States and by mid-August had spread north to Minnesota and Maine. It is estimated that Illinois alone suffered a loss of 250 million bushels of corn to SCLB.[10] The monetary value of the lost corn crop is estimated at one billion US dollars.[1] In 1971 SCLB losses had basically disappeared. This was due to the return usage of normal cytoplasm corn, not as conducive weather, residues being buried, and planting early.[10] The SCLB epidemic highlighted the issue of genetic uniformity in monoculture crops, which allows for a greater likelihood of new pathogen races and host vulnerability.[1]"