By: Suzanne Goldenberg,
Published:,  12 September 2013

Photo: Alamy

Authorities were investigating a new suspected case of crop contamination on Thursday –the second in the Pacific north-west in five months – after samples of hay tested positive for genetically modified traits.

The investigation was ordered after a farmer in Washington state reported that his alfalfa shipments had been rejected for export after testing positive for genetic modification. Results were expected as early as Friday.
If confirmed, it would be the second known case of GM contamination in a major American crop since May, when university scientists confirmed the presence of a banned GM wheat growing in a farmer’s field in Oregon.
The suspected outbreak comes in the run-up to a ballot measure in Washington state that would require mandatory labelling of all GM foods.
Alfalfa is America’s fourth largest crop, behind corn, wheat and soybeans, and the main feedstock for the dairy industry. A confirmed case of contamination could hurt the organic dairy industry, which is now worth $26bn a year, forcing farmers to find new sources of GM-free feed. It could also hurt a growing export industry. Alfalfa is increasingly sold for export but buyers, such as Japan, do not want GM products.
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