RESULTS

(5)

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DISEASE: Ash yellows

HOST: Ash

Forest of declining trees, some chlorotic and others with dieback.

Ash yellows | Ash

DISEASE: Ash yellows

HOST: Ash (Fraxinus americana)

PATHOGEN: 'Candidatus Phytoplasma fraxini'

PATHOGEN SYNONYM: Phytoplasma Ash yellows group

SOURCE: W. Sinclair

DISEASE: Ash yellows

HOST: Ash

White ash with deliquescent branching.

Ash yellows | Ash

DISEASE: Ash yellows

HOST: Ash (Fraxinus americana)

PATHOGEN: 'Candidatus Phytoplasma fraxini'

PATHOGEN SYNONYM: Phytoplasma Ash yellows group

SOURCE: W. Sinclair

DISEASE: Bacterial leaf spot

HOST: Snapdragon

Leaves with large necrotic areas with brownish centers and purplish margins. Lesions are slightly sunken.

Bacterial leaf spot | Snapdragon

DISEASE: Bacterial leaf spot

HOST: Snapdragon (Antirrhinum majus)

PATHOGEN: Pseudomonas syringae pv. antirrhini

SOURCE: R. Raabe

DISEASE: Bacterial wilt

HOST: Grass

Wilted and dead patches of diseased creeping bent grass (Toronto grass) on golf green.

Bacterial wilt | Grass

DISEASE: Bacterial wilt

HOST: Grass (Agrostis stolonifera)

PATHOGEN: Xanthomonas translucens pv. poae

SOURCE: D. Roberts

DISEASE: Bacterial wilt

HOST: Grass

Irregular disease patterns on golf green. The cultivars Toronto, Cohansey, and Nimisilia are primary hosts of the disease.

Bacterial wilt | Grass

DISEASE: Bacterial wilt

HOST: Grass (Agrostis stolonifera)

PATHOGEN: Xanthomonas translucens pv. poae

SOURCE: D. Roberts