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RESULTS

(8)

DISEASE: Goss's bacterial wilt and blight

HOST: Corn (Maize)

Wilted, dying plants. Leaves have gray to light yellow stripes and irregular margins that follow leaf veins. Systemically infected plants usually have orange vascular bundles.

DISEASE: Goss's bacterial wilt and blight

HOST: Corn (Maize)

The disease causes necrotic leaf lesions, which typically have dark flecks (freckles) within the lesions (not seen here).

DISEASE: Hollow stalk

HOST: Tobacco

Hollow stalk may appear at time of topping and suckering. Top leaves wilt and the stalk becomes bare as the disease moves downward.

DISEASE: Hollow stalk

HOST: Tobacco

Infection of flue-cured tobacco stalks occur at wound sites caused by topping. After top infection, browning of pith occurs and tissues rot.

DISEASE: Slime flux

HOST: Casuarina

Slime flux occurs on a number of tree species and is always associated with bacteria and yeast. However, the causal agent has not been identified.

DISEASE: Slime flux

HOST: Elm

Although bacteria are associated with slime fluxes of many trees, the causal agents have not been identified.

DISEASE: Slime flux

HOST: Maple

The causal agent of slime flux has not been identified.

DISEASE: Slime flux

HOST: Willow

Foam at site of infection. Slime fluxes are common but the causal agent has not been identified.