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RESULTS

(8)

DISEASE: Bacterial foot rot

HOST: Rice

The disease causes sheaths to turn dark brown and rot; dead leaves droop. Nodes, culms, and crowns also decay, and infected tillers are easily detached from the crown. Culms and internodes turn black.

DISEASE: Bacterial foot rot

HOST: Rice

Decayed culms (right) and healthy culms (left). Leaf sheaths of infected plants exhibit dark brown decay and attached leaves turn yellow and wilt.

DISEASE: Bacterial vascular necrosis and rot

HOST: Beet

Cross section of sugar beet with reddish color in vascular bundles and adjacent tissues.

DISEASE: Bacterial vascular necrosis and rot

HOST: Beet

Advanced stage of disease with extensive rot.

DISEASE: Bacterial vascular necrosis and rot

HOST: Beet

Early stage of systemic infection of young plant noted by blackening of midribs and veins.

DISEASE: Bacterial vascular necrosis and rot

HOST: Beet

Infected vascular bundles caused by systemic infection by the bacterium.

DISEASE: Bacterial vascular necrosis and rot

HOST: Beet

Black discoloration of petioles resulting from systemic infection.

DISEASE: Strawberry lethal decline

HOST: Strawberry

Diseased plant with bronzing of older leaves and upward rolling or cupping of younger leaves. Leaves are chlorotic on upper surfaces and reddish or purplish on lower surfaces. In time, the entire plant dies.