It is USDA policy that there is no upper limit short of 100% on GMO content in non-GMO food stuffs. If in the unlikely possibility that a organic field comes back with a high GMO content the USDA only "consults" with the Organic grower and kindly suggests ways that the organic grower can lower the GM content of their non GMO produce. Whoop-De-DoIt is my understand a product can be labeled organic with 30% GMO content.

If for instance you were returning a plot of Conservation Reserve land to the production of Organic crops it is perfectly permitted for the farmer to burn the standing vegetation down with Roundup before returning the land to production. The catch is that there was no Roundup used on a CROP growing ON this field for three years BEFORE it was converted to non-GMO practices. Whoop-De-Do X Two,

