RESULTS

(4)

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DISEASE: Bacterial wilt

HOST: Squash

Field with severe symptoms of wilt. Foliage often is chlorotic and leaf margins may be chlorotic and necrotic before plant death. Bacterial ooze may be seen streaming from the xylem when infected stems are cut.

Bacterial wilt | Squash

DISEASE: Bacterial wilt

HOST: Squash (Cucurbita maxima)

PATHOGEN: Erwinia tracheiphila

SOURCE: B. Jacobsen, M. Shurtleff

DISEASE: Bunch disease

HOST: Hickory

Bunch disease of shagbark hickory caused by a phytoplasma.

Bunch disease | Hickory

DISEASE: Bunch disease

HOST: Hickory (Carya sp.)

PATHOGEN: 'Candidatus Phytoplasma' sp.

PATHOGEN SYNONYM: Phytoplasma (undefined)

SOURCE: P. Fenn

DISEASE: Fire blight

HOST: Plum

Typical symptoms of fire blight-infected, young European plum shoot.

Fire blight | Plum

DISEASE: Fire blight

HOST: Plum (Prunus domestica 'Empress')

PATHOGEN: Erwinia amylovora

SOURCE: S. Mohan

DISEASE: Fire blight

HOST: Plum

Diseased terminal shoot and advancing infection.

Fire blight | Plum

DISEASE: Fire blight

HOST: Plum (Prunus domestica 'Empress')

PATHOGEN: Erwinia amylovora

SOURCE: S. Mohan