RESULTS

(5)

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DISEASE: Bacterial leaf spot and canker

HOST: Sweetgum

Leaves with irregular necrotic lesions.

Bacterial leaf spot and canker | Sweetgum

DISEASE: Bacterial leaf spot and canker

HOST: Sweetgum (Liquidambar styraciflua)

PATHOGEN: Pseudomonas syringae pv. syringae

SOURCE: A. Bishop

DISEASE: Bacterial leaf spot and canker

HOST: Sweetgum

Stem canker of sweetgum.

Bacterial leaf spot and canker | Sweetgum

DISEASE: Bacterial leaf spot and canker

HOST: Sweetgum (Liquidambar styraciflua)

PATHOGEN: Pseudomonas syringae pv. syringae

SOURCE: A. Bishop

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

DISEASE: Phony disease (Phony peach)

HOST: Peach

Tree with characteristic reduced growth. Foliage is dark green, then turns yellowish. Twigs become brittle and branches die back. Fruit are small.

Phony disease (Phony peach) | Peach

DISEASE: Phony disease (Phony peach)

HOST: Peach (Prunus persica)

PATHOGEN: Xylella fastidiosa

SOURCE: P. C. Anderson

DISEASE: Phony disease (Phony peach)

HOST: Peach

Twigs on diseased trees have shortened internodes and increased lateral branching.

Phony disease (Phony peach) | Peach

DISEASE: Phony disease (Phony peach)

HOST: Peach (Prunus persica)

PATHOGEN: Xylella fastidiosa

SOURCE: M. Davis