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RESULTS

(9)

DISEASE: Bacterial blight (Brown stem)

HOST: Celery

Lesions are necrotic and circular to angular. Some have yellowish halos. Older lesions become brown and dry.

DISEASE: Bacterial blight (Brown stem)

HOST: Celery

Ooze from lesion on celery leaf.

DISEASE: Bacterial blight (Brown stem)

HOST: Celery

Characteristic brown discoloration of petioles, which is more evident on inside of petiole close to the crown. Parenchyma tissues are firm and brown.

DISEASE: Bacterial leaf spot

HOST: Celery

Leaves with typical symptoms of rusty brown lesions with greasy appearance.

DISEASE: Bacterial leaf spot

HOST: Celery

Celery leaves with rusty brown lesions and some yellowing at leaf tips.

DISEASE: Bacterial wilt

HOST: Custard apple

Custard apple with brown discoloration of vascular system, typical of wilt disease.

DISEASE: Bacterial wilt

HOST: Custard apple

Sudden death stage of wilt disease.

DISEASE: Bacterial wilt

HOST: Custard apple

Custard apple with brown, dead root tissues with necrotic speckles at the margin between healthy and diseased tissues.

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.