Dieback of Oaks in California. Eva I. Hecht-Poinar, Assistant Specialist III, Department of Plant Pathology, University of California, Berkeley 94720. J. C. Britton, J. Britton Tree Service, St. Helena, CA 94574; and J. R. Parmeter, Jr., Professor, Department of Plant Pathology, University of California, Berkeley 94720. Plant Dis. 65:281. Copyright 1981 American Phytopathological Society. DOI: 10.1094/PD-65-281.

Extensive dieback, and in some cases death, of live oaks (Quercus agrifolia Née) in the Napa Valley, California, was caused by a fungus tentatively assigned to Diplodia quercina West.