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: Bacterial leaf spot

HOST: Cowpea

Leaf spots vary in size from small to large and some fall out in time, leaving a shot-hole appearance.

Bacterial leaf spot | Cowpea

DISEASE: Bacterial leaf spot

HOST: Cowpea (Vigna unguiculata)

PATHOGEN: Xanthomonas axonopodis pv. vignicola

PATHOGEN SYNONYM: Xanthomonas campestris pv. vignicola

SOURCE: R. Gitaitis

DISEASE: Bacterial leaf spot

HOST: Cowpea

Leaves with large, light brown necrotic areas.

Bacterial leaf spot | Cowpea

DISEASE: Bacterial leaf spot

HOST: Cowpea (Vigna unguiculata)

PATHOGEN: Xanthomonas axonopodis pv. vignicola

PATHOGEN SYNONYM: Xanthomonas campestris pv. vignicola

SOURCE: R. Gitaitis

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.

Bacterial wilt | Squash

DISEASE: Bacterial wilt

HOST: Squash (Cucurbita maxima)

PATHOGEN: Erwinia tracheiphila

SOURCE: B. Jacobsen, M. Shurtleff