So, for example, chemical pesticide or pollen from genetically engineered plants wafting onto an organic crop from an adjacent field does not cause the harvest to lose its organic status.
Compounding the unwisdom of current regulation of field trials and commercialization of genetically engineered plants, USDA prohibits them from organic farming.
Like high-end winemakers, these producers obsess about methods, singing the virtues of organic gardening, hydroponics (soilless agriculture), even aeroponics (with nutrient misted on the plants).