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RESULTS

(39)

DISEASE: Fire blight

HOST: Pear

Diseased fruit.

DISEASE: Fire blight

HOST: Pear

Bacterial strands may form on blossoms and young fruit under humid conditions.

DISEASE: Fire blight

HOST: Pear

Fruit with white, curling strands of bacteria.

DISEASE: Fire blight

HOST: Pear

Mummified fruit with strands of bacterial ooze.

DISEASE: Fire blight

HOST: Pear

Close-up of bacterial strands on fruit. These strands detach and drift with the wind.

DISEASE: Fire blight

HOST: Pear

Cankers on trunk often serve as overwintering sites for the pathogen.

DISEASE: Fire blight

HOST: Pear

Diseased twig with typical crook neck. Note yellowish orange bacterial ooze.

DISEASE: Goss's bacterial wilt and blight

HOST: Corn (Maize)

Wilted, dying plants. Leaves have gray to light yellow stripes and irregular margins that follow leaf veins. Systemically infected plants usually have orange vascular bundles.

DISEASE: Goss's bacterial wilt and blight

HOST: Corn (Maize)

The disease causes necrotic leaf lesions, which typically have dark flecks (freckles) within the lesions (not seen here).