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RESULTS

(16)

DISEASE: Bacterial fruit blotch

HOST: Cantaloupe

Early stage of disease with discolored blotches on the surface.

DISEASE: Bacterial fruit blotch

HOST: Cantaloupe

View of disease path from rind to internal rotting of melon.

DISEASE: Bacterial fruit blotch

HOST: Cantaloupe

Leaf spot stage. Lesions start small and may coalesce, forming large, brown necrotic areas.

DISEASE: Bacterial leaf spot (Head rot)

HOST: Lettuce

Leaf with black, greasy spots that tend to be vein delimited. Lesions begin as small, angular, water-soaked lesions that coalesce, resulting in large necrotic areas.

DISEASE: Bacterial wilt

HOST: Cantaloupe

Cantaloupe field with severe destruction from bacterial wilt (left), less on right.

DISEASE: Bunch disease

HOST: Hickory

Bunch disease of shagbark hickory caused by a phytoplasma.

DISEASE: Corky root

HOST: Lettuce

Corky root causes a reduction in size of lettuce heads and root systems; susceptible cultivar (right) and resistant cultivar (left).

DISEASE: Corky root

HOST: Lettuce

Close-up of root with malformed, corky appearance and longitudinal ridges of brown tissues.

DISEASE: Corky root

HOST: Lettuce

Initial symptoms of disease are yellow lesions on taproot and main laterals. Greenish brown bands occur around roots. Root pith may become brown and hollow.