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RESULTS

(9)

DISEASE: Bacterial leaf spot (Bacterial necrosis)

HOST: Cassava

Cassava with yellowish leaves and water-soaked, angular spots. The disease is primarily on foliage, although the pathogen may invade stem buds and young branches.

DISEASE: Bacterial leaf spot (Bacterial necrosis)

HOST: Cassava

Cassava with brownish lesions and blackish edges. Leaves turn yellow with multiple infection sites.

DISEASE: Bacterial wilt

HOST: Grass

Initial symptom is a lime-green, yellow, or blue-green appearance of the grass. The next symptom is small, reddish brown spots on leaf blades.

DISEASE: Bacterial wilt

HOST: Grass

Infected turf grass with patches of yellowing, wilted, and dead grass.

DISEASE: Bacterial wilt

HOST: Grass

Late stage of disease development. Dead grass has a light brown or bleached tan appearance.

DISEASE: Bacterial wilt

HOST: Grass

Wilted and dead patches of diseased creeping bent grass (Toronto grass) on golf green.

DISEASE: Bacterial wilt

HOST: Grass

Irregular disease patterns on golf green. The cultivars Toronto, Cohansey, and Nimisilia are primary hosts of the disease.

DISEASE: Pink disease

HOST: Pineapple

Infected pineapple slices; effect of heating (right) and not heating (left).

DISEASE: Pink disease

HOST: Pineapple

Two clones (A and D) showing different stages of infection. Second and fourth fruits (left to right) have been heated. Disease originally attributed to Gluconobacter oxydans and Enterobacter agglomerans and later to Pantoea citrea.