RESULTS

(3)

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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: Fire blight

HOST: Photinia

Fire blight cankers on photinia.

Fire blight | Photinia

DISEASE: Fire blight

HOST: Photinia (Photinia fraseri)

PATHOGEN: Erwinia amylovora

SOURCE: M. Schroth

DISEASE: Fire blight

HOST: Photinia

Typical crook neck symptom of infected shoot.

Fire blight | Photinia

DISEASE: Fire blight

HOST: Photinia (Photinia fraseri)

PATHOGEN: Erwinia amylovora

SOURCE: M. Schroth