RESULTS

(8)

FILTER

DISEASE: Angular leaf spot

HOST: Strawberry

Early stage of disease begins as water-soaked, angular lesions, often with yellow ooze. There also are blight and vascular collapse stages.

Angular leaf spot | Strawberry

DISEASE: Angular leaf spot

HOST: Strawberry (Fragaria × ananassa)

PATHOGEN: Xanthomonas fragariae

SOURCE: M. Schroth

DISEASE: Angular leaf spot

HOST: Strawberry

Advanced stage of disease with dry, brownish necrotic lesions on upper leaf surface.

Angular leaf spot | Strawberry

DISEASE: Angular leaf spot

HOST: Strawberry (Fragaria chiloensis)

PATHOGEN: Xanthomonas fragariae

SOURCE: A. Alvarez

DISEASE: Angular leaf spot

HOST: Strawberry

Diseased sepals.

Angular leaf spot | Strawberry

DISEASE: Angular leaf spot

HOST: Strawberry (Fragaria × ananassa)

PATHOGEN: Xanthomonas fragariae

SOURCE: M. Schroth

DISEASE: Angular leaf spot

HOST: Strawberry

Vascular collapse stage occurs from systemic invasion of crown region.

Angular leaf spot | Strawberry

DISEASE: Angular leaf spot

HOST: Strawberry (Fragaria × ananassa)

PATHOGEN: Xanthomonas fragariae

SOURCE: M. Schroth

DISEASE: Bacterial blight

HOST: Hazelnut

Diseased young tree with discoloration of the cambium. Dieback of young twigs and branches is characteristic. Other typical symptoms are bud and twig necrosis and small, angular or round, water-soaked leaf spots.

Bacterial blight | Hazelnut

DISEASE: Bacterial blight

HOST: Hazelnut (Corylus americana)

PATHOGEN: Xanthomonas arboricola pv. corylina

SOURCE: J. Pscheidt

DISEASE: Center rot

HOST: Onion

Early symptoms of disease are necrotic, bleached areas on young leaves that typically wilt.

Center rot | Onion

DISEASE: Center rot

HOST: Onion (Allium cepa)

PATHOGEN: Pantoea ananatis

SOURCE: R. Gitaitis

DISEASE: Center rot

HOST: Onion

Advanced stage of center rot. The bacterium has moved down from leaves into the bulb.

Center rot | Onion

DISEASE: Center rot

HOST: Onion (Allium cepa)

PATHOGEN: Pantoea ananatis

SOURCE: H. Schwartz

DISEASE: Center rot

HOST: Onion

Bulb with pale yellow, discolored decayed area.

Center rot | Onion

DISEASE: Center rot

HOST: Onion (Allium cepa)

PATHOGEN: Pantoea ananatis

SOURCE: H. Schwartz