SOUTH Australian president of The Nationals Wilbur Klein’s call this week to lift the moratorium on the growing of genetically-modified canola in South Australia has put him at odds with his party’s parliamentary leader Karlene Maywald. [...] But as The Nationals sole member of Parliament in SA, Ms Maywald said in a statement that she was not convinced. ”There is no compelling case put forward to suggest there is any advantage for SA growers to have access to these products,” she said.