Growers of genetically modified canola will need to set up buffer zones of just 5m to keep the GM crops away from regular varieties if WA follows national industry guidelines, sparking fears of contamination if the State adopts the controversial technology. As the new State Government prepares for large scale trials of GM canola, possibly by next year, critics of the technology warned yesterday contamination of non-GM crops would be inevitable if industry was allowed to ”self-regulate” segregation. Network of Concerned Farmers spokeswoman Julie Newman said that as a result, farmers would not be able to promise consumers that their crops were entirely free of GM seed.