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Genetically engineered corn, soy and plant oil should be disclosed on mandatory food labels, a coalition of more than 350 producers, trade groups and consumers said in a petition to U.S. regulators.

The U.S. should require added disclosure even when a product containing a gene-altered organism is similar to foods that aren’t bioengineered, the groups said today in the petition to the Food and Drug Administration. Stonyfield Farm, the organic-yogurt maker owned by Danone SA, and Dean Foods Co.’s Horizon Organic are among the coalition members.

Petitioners, led by the Washington-based Center for Food Safety, want to reverse a 1992 Food and Drug Administration policy that doesn’t require different labeling. Gene-altered seeds are used for almost 90 percent of U.S.-grown corn, 94 percent of soy and 90 percent of cottonseed, an oil-producing plant, the coalition said.

“Consumers ought to have the right to choose whether to be buying these foods,” said Gary Hirshberg, chief executive officer of Londonderry, New Hampshire-based Stonyfield Farm, in an interview. “Polls show a vast majority of Americans say they don’t want to eat genetically engineered foods.”