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Animal and Plant Health Inspection Service
U.S. Department of Agriculture
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GE Glyphosate Tolerant Wheat Oregon Investigation

APHIS began its comprehensive investigation into the detection of GE wheat on the Oregon farm on May 3, 2013. During the following 10 months, APHIS conducted 291 interviews with wheat growers, grain elevator operators, crop consultants, and wheat researchers, and collected and carefully reviewed thousands of pages of evidence. Additionally, APHIS collected more than 100 samples from businesses that sold and purchased the same certified seed planted in the field in Oregon, as well as from businesses that purchased the harvested grain from the grower.

The investigation indicated that it appeared to be an isolated occurrence and that there is no evidence of any GE wheat in commerce. Information collected during the investigation was instrumental in providing critical information to trading partners to keep foreign wheat markets open. After exhausting all leads, APHIS was unable to determine exactly how the GE wheat came to grow in the farmer’s field.

The investigation also found that the GE wheat is not a commercial variety of wheat. Instead, the genetic characteristics of the GE wheat volunteers are representative of a wheat breeding program.

A copy of the 12,842 pages that comprise the complete report of investigation and evidence file that has been redacted for personal information and confidential business information is available below.

View the Oregon Investigation Report

Learn more about the GE Glyphosate Tolerant Wheat Incident

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