Disease Suppression: Common Scab (IMAGE) American Phytopathological Society Caption Chloropicrin was first used on potato in 1940 as a wireworm suppressant and then in 1965 as a verticillium suppressant. Farmers stopped using it on potato for many years, but over the last decade, it has seen a resurgence in popularity -- and for good reason, according to Chad Hutchinson, director of research at TriEst Ag Group, Inc., in his webcast 'Chloropicrin Soil Fumigation in Potato Production Systems.' Credit Hutchinson C.M. 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.