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RESULTS

(6)

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: Brown rot (Bacteral wilt)

HOST: Potato

Wilted, stunted plants with yellowing foliage.

DISEASE: Brown rot (Bacteral wilt)

HOST: Potato

External symptoms of the disease.

DISEASE: Brown rot (Bacteral wilt)

HOST: Potato

Tubers with distinct grayish brown rings and bacterial ooze from vascular tissues.

DISEASE: Slippery skin

HOST: Onion

Rot progresses from the top of infected scales and eventually internal tissues rot. In early stages, the only external symptoms may be softening of the neck.