Search Plant Disease Handbook

Strawberry (Fragaria spp.)-Nematode, Stem and Bulb March 2023 Cause Ditylenchus dipsaci, a nematode that infects aboveground portions of plants but rarely is found in strawberry. Symptoms Plants are stunted from the crown with short, thick petioles. The d ...

Strawberry (Fragaria spp.)-Powdery Mildew March 2023 See: Strawberry Cultivar Susceptibility Cause Podosphaera aphanis var. aphanis (formerly Sphaerotheca macularis f. sp. fragariae), a fungus that overwinters on infected plant tissue including living lea ...

Strawberry (Fragaria spp.)-Red Stele March 2023 See: Strawberry Cultivar Susceptibility Cause Phytophthora fragariae var. fragariae, a soil-infesting fungus-like microorganism that may live many years in fields. It is active in cool, wet weather. It attac ...

Strawberry (Fragaria spp.)-Slime Mold See: Lawn and Turf- Slime Molds ...

Strawberry (Fragaria spp.)-Verticillium Wilt March 2023 Cause Verticillium dahliae, a soilborne fungus that can live many years in soil. The fungus grows into the xylem where it colonizes the plant through mycelial growth and conidial production. Fluid mo ...

Strawberry (Fragaria spp.)-Virus Diseases March 2023 See: Strawberry Cultivar Susceptibility Cause Cultivars of strawberry that have become important in the PNW are tolerant to infection with multiple aphid-transmitted viruses, except Hood. Strawberry cri ...

Sugar Beet (Beta vulgaris)-Bacterial Vascular Necrosis and Rot (Erwinia Root Rot) March 2023 By O. Neher and C. M. Ocamb Cause This disease is caused by a bacterium, Pectobacterium betavasculorum (syn Erwinia carotovora subsp. betavasculorum), present in ...

Sugar Beet (Beta vulgaris)-Beet Curly Top March 2023 By O. Neher and C. M. Ocamb Cause The Beet curly top virus is spread in North America only by the beet leafhopper (Circulifer tenellus). The virus has an extensive host range. The leafhopper breeds read ...

Sugar Beet (Beta vulgaris)-Beet Mosaic March 2023 By O. Neher and C. M. Ocamb Cause Beet mosaic virus (BMV), which overwinters in infected members of the beet family including red beets. The virus is spread by many aphid species but persists in the aphid ...

Sugar Beet (Beta vulgaris)-Cercospora Leaf Spot March 2023 By O. Neher and C. M. Ocamb Cause Cercospora beticola, a fungus perpetuated in beet refuse. It can be spread on seed produced in regions where the disease is severe. It is becoming a major disease ...