FILE- In this December 2005 file photo, a worker cleans the edges of a massive container of spring wheat loaded onto a ship at Columbia Grain in north Portland, Ore. A patch of genetically modified ... more 
FILE- In this December 2005 file photo, a worker cleans the edges of a massive container of spring wheat loaded onto a ship at Columbia Grain in north Portland, Ore. A patch of genetically modified wheat found in a field in northeastern Oregon Spring 2013 caused a scare that disrupted markets, but the Oregon Wheat Commission says things are back to normal, and economic impacts were minimal. (AP Photo/Oregonian, Rob Finch File) less 
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Associated Press | Photo By Oregonian, Rob Finch File
Fri, Aug 30, 2013 6:04 PM EDT