RESULTS

(5)

FILTER

DISEASE: Bacterial blight (Brown stem)

HOST: Celery

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

Bacterial blight (Brown stem) | Celery

DISEASE: Bacterial blight (Brown stem)

HOST: Celery (Apium graveolens)

PATHOGEN: Pseudomonas cichorii

SOURCE: R. Raid

DISEASE: Bacterial blight (Brown stem)

HOST: Celery

Ooze from lesion on celery leaf.

Bacterial blight (Brown stem) | Celery

DISEASE: Bacterial blight (Brown stem)

HOST: Celery (Apium graveolens)

PATHOGEN: Pseudomonas cichorii

SOURCE: R. Raid

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.

Bacterial blight (Brown stem) | Celery

DISEASE: Bacterial blight (Brown stem)

HOST: Celery (Apium graveolens)

PATHOGEN: Pseudomonas cichorii

SOURCE: K. Pernezny

DISEASE: Blossom blast

HOST: Apple

Many dead, shriveled flowers and young shoots. It differs from fire blight, with infections being relatively localized with the appearance of being "blasted".

Blossom blast | Apple

DISEASE: Blossom blast

HOST: Apple (Malus domestica)

PATHOGEN: Pseudomonas syringae pv. syringae

SOURCE: M. Schroth

DISEASE: Marginal leaf blight

HOST: Lettuce

Marginal leaf blight first appears as slimy wilting of leaf margins. Small, reddish lesions may be seen on leaf blades. Infected tissues turn brown to black in time.

Marginal leaf blight | Lettuce

DISEASE: Marginal leaf blight

HOST: Lettuce (Lactuca sativa)

PATHOGEN: Pseudomonas marginalis

SOURCE: L. Fucikovsky