SUPERWEEDS ON THE MARCH CLAIM 09 Feb 2001 by Farming News reporters Genetically modified superweeds are invading Canadian farms, a report from the Royal Society of Canada claims. The report, which directly contradicts the findings of a ten-year Imperial College study published this week, found that three strains of oilseed rape plant, each engineered to be resistant to a particular pesticide, had merged to form a plant resistant to many different pesticides. This plant is now invading cereal areas and farmers are having to resort to using broad spectrum pesticides - the very chemicals the engineered plants were designed to render obsolescent - to remove them. "Herbicide-resistant volunteer oilseed rape plants are beginning to develop into a major problem in the prairies," states the report. "The point is, technology is still driving agricultural production along a chemical-dependence route. And I think that's something the Government has to take a very serious look at," says one of the report's authors. The controversy comes as the Government announced an increase in separation distances for trial GM crops and a report in this week's New Scientist suggests that one third of US farmers are failing to adhere to recommended separation distances when growing GM crops.