Presence of overwintering sclerotia and sporulation indicates potential for blossom infection. Early bloom foliar fungicide to protect blossoms from infection. Fruit inspection during harvest period. Phytophthora Root Rot Soilborne fungus which can cause root and crown rot. Infection favored by saturated soil conditions.
Diseased plants have lack of feeder roots, poor vigor canes.
Interior of major roots and crown are brown to black. Kills infected plants through root and crown destruction. Reduced vigor and yield. History of root rot problems. Consider varietal susceptibility.