About 100 protesters climbed to the tip of a silo and poured ricin oil over the soya on Friday morning so as to render it unusable.
The grain was destined to be used as animal feed, they said, and they wanted to alert the public that GM products were present in meat, despite France’s restrictions on their cultivation.
The campaigners are demanding and end to GM soya imports, which come mainly from Latin America, labelling of transgenic products and a revival of grain cultivation in Europe.
There is broad scientific consensus that food on the market derived from GM crops pose no greater risk than conventional food. No reports of ill effects have been documented in the human population from GM food