PCN Map (IMAGE) American Phytopathological Society Caption A, Map of Australia indicating the locations of potato cyst nematode (PCN) incursions in Western Australia (Perth, now eradicated) and Victoria (Melbourne, currently established); lines on map indicate Australian state boundaries. B, Victorian quarantine zones (gray) and 20-km controlled areas (circles) which historically involved restricted movement of potato material and extra hygiene restrictions around PCN outbreaks. Location abbreviations: Bo = Boneo, Em = Emerald, Ge = Gembrook, Ke = Keysborough, Ko = Koo Wee Rup/Cora Lynn, To = Thorpdale, and Wa = Wandin. Credit American Phytopathological Society Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.