First Report of Phytophthora occultans Causing Root and Collar Rot on Ceanothus, Boxwood, Rhododendron, and Other Hosts in Horticultural Nurseries in Oregon, USA
P. W.Reeser, W.Sutton, and E. M.Hansen, Department of Botany and Plant Pathology, Oregon State University, Corvallis OR 97331 USA; E. M.Goheen, USDA Forest Service, Forest Health Protection, Medford, OR USA; V. J.Fieland, Department of Botany and Plant Pathology, Oregon State University, Corvallis OR 97331 USA; and N. J.Grunwald, USDA-ARS, Horticultural Crops Research Lab, Corvallis OR 97331. http://dx.doi.org/10.1094/PDIS-02-15-0156-PDN