March 23, 2007
By: Carey Gillam
The U.S. Department of Agriculture has quietly dropped a plan to start testing food for residues of glyphosate, the world’s most widely used weed killer and the key ingredient in Monsanto Co.’s branded Roundup herbicides.
The agency spent the last year coordinating with the Environmental Protection Agency (EPA) and the Food and Drug Administration (FDA) in preparation to start testing samples of corn syrup for glyphosate residues on April 1, according to internal agency documents obtained through Freedom of Information Act requests. Documents show that at least since January 2016 into January of this year, the glyphosate testing plan was moving forward. But when asked about the plan this week, a USDA spokesman said no glyphosate residue testing would be done at all by USDA this year.
The USDA’s plan called for the collection and testing of 315 samples of corn syrup from around the United States from April through August, according to the documents. Researchers were also supposed to test for the AMPA metabolite, the documents state. AMPA (aminomethylphosphonic acid) is created as glyphosate breaks down. Measuring residues that include those from AMPA is important because AMPA is not a benign byproduct but carries its own set of safety concerns, scientists believe.
On Jan. 11, USDA’s Diana Haynes wrote to colleagues within USDA: “Based on recent conversations with EPA, we will begin testing corn syrup for glyphosate and its AMPA metabolite April 1, 2017 with collection ending August 31, 2017. This program change will need to be announced at the February PDP Conference Call.” Haynes is director of a USDA Agricultural Marketing Service division that annually conducts the Pesticide Data Program (PDP), which tests thousands of foods for hundreds of different pesticide residues.
The USDA spokesman, who did not want to be named, acknowledged there had been a glyphosate test plan but said that had recently changed: “The final decision for this year’s program plan, as a more efficient use of resources, is to sample and test honey which covers over 100 different pesticides.” Glyphosate residue testing requires a different methodology and will not be part of that screening in honey, he said