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RESULTS

(45)

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: Grain rot

HOST: Rice

Close-up of diseased grain. Infected portions of lemma and palea are purplish to dark brown.

DISEASE: Grain rot

HOST: Rice

Discolored and withered hulls of infected panicles. A brown margin between the infected and healthy parts of the grain is a diagnostic feature.

DISEASE: Halo blight

HOST: Rice

Leaves with yellowish brown lesions, 2 to 10 mm in diameter. Lesions are surrounded by distinct halos. Later, brown spots or stripes may develop in the center.

DISEASE: Pear decline

HOST: Pear

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