RESULTS

(5)

FILTER

DISEASE: Bacterial leaf spot (Head rot)

HOST: Cauliflower

Leaves with tiny lesions surrounded by large halos.

Bacterial leaf spot (Head rot) | Cauliflower

DISEASE: Bacterial leaf spot (Head rot)

HOST: Cauliflower (Brassica oleracea var. botrytis)

PATHOGEN: Pseudomonas syringae pv. maculicola

SOURCE: R. Campbell

DISEASE: Bacterial leaf spot (Head rot)

HOST: Cauliflower

Section of a cauliflower head with discolored, infected tissues.

Bacterial leaf spot (Head rot) | Cauliflower

DISEASE: Bacterial leaf spot (Head rot)

HOST: Cauliflower (Brassica oleracea var. botrytis)

PATHOGEN: Pseudomonas syringae pv. maculicola

SOURCE: R. Campbell

DISEASE: Bacterial stalk and top rot

HOST: Corn (Maize)

Corn exhibiting symptoms at early stage of disease. Note water-soaked external stalk tissues.

Bacterial stalk and top rot | Corn (Maize)

DISEASE: Bacterial stalk and top rot

HOST: Corn (Maize) (Zea mays 'Pukekohe')

PATHOGEN: Dickeya zeae

PATHOGEN SYNONYM: Erwinia chrysanthemi pv. zeae

SOURCE: J. Young

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

DISEASE: Black rot

HOST: Cauliflower

Brown, necrotic, rotted areas on flower parts and typical V-shaped necrotic areas on leaf margins.

Black rot | Cauliflower

DISEASE: Black rot

HOST: Cauliflower (Brassica oleracea var. botrytis)

PATHOGEN: Xanthomonas campestris pv. campestris

SOURCE: B. Jacobsen, M. Shurtleff