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RESULTS

(31)

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: Fire blight

HOST: Pear

Blossom blight is first seen as water-soaked spots that rapidly turn brown to black as the disease becomes systemic and progresses down the shoot.

DISEASE: Foamy canker

HOST: Almond

White, macerated tissues near cambium region is characteristic of disease. Foam is usually associated with cankers. The disease is suspected to be bacterial but the causal agent has not been identified.

DISEASE: Foamy canker

HOST: Almond

Amber red-colored ooze sliding down the trunk. The causal agent has not been identified.

DISEASE: Pear decline

HOST: Pear

Healthy pear shoot (left) and diseased shoots (center and right). Leaves are reddish and growth is stunted.