RESULTS

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DISEASE: Bacterial leaf spot of beet

HOST: Beet

Beet leaves with spots and marginal necrosis.

Bacterial leaf spot of beet | Beet

DISEASE: Bacterial leaf spot of beet

HOST: Beet (Beta vulgaris subsp. vulgaris)

PATHOGEN: Pseudomonas syringae pv. aptata

PATHOGEN SYNONYM: Pseudomonas aptata

SOURCE: P. Brown

DISEASE: European stone fruit yellows

HOST: Almond

The disease causes yellowing and rolling of leaves (right). Leaves become thick and rough in texture. Healthy leaves (left).

European stone fruit yellows | Almond

DISEASE: European stone fruit yellows

HOST: Almond (Prunus dulcis)

PATHOGEN: 'Candidatus Phytoplasma prunorum'

PATHOGEN SYNONYM: Phytoplasma Apple proliferation group

SOURCE: E. Seemueller

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