By Alicyn Smart, D.P.M., Associate Extension Professor and Extension Plant Pathologist, University of Maine Cooperative Extension and James Dill, PhD, Pest Management Specialist, University of Maine Cooperative Extension For information about UMaine Extension programs and resources, visit extension.umaine.edu.Find more of our publications and books at extension.umaine.edu/publications/. Bulletin #5003, Bacterial Ring Rot Introduction Bacterial Ring Rot,