Phytophthora cinnamomi as a Cause of Root Rot and Dieback of Cranberry in Massachusetts

Affected plants typically are stunted, unproductive, off-color and have poorly developed root systems; severely affected plants often die. When portions of beds with symptomatic vines are replanted with new vines, the replacement vines also usually die. P. cinnamomi was isolated from necrotic roots and underground runners of symptomatic plants in 215 different beds(.)