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RESULTS

(11)

DISEASE: Angular leaf spot

HOST: Tobacco

Leaf with light brown, angular spots. The difference between this disease and wildfire of tobacco is that wildfire is caused by a strain that produces tabtoxin. It causes conspicuous halos around lesions and large parts of a leaf may turn yellow .

DISEASE: Angular leaf spot

HOST: Tobacco

Yellowing of adjacent tissues occur as spots age (midseason). It causes conspicuous halos around lesions. Large parts of a leaf may turn yellow.

DISEASE: Angular leaf spot

HOST: Tobacco

Severely diseased leaf with extensive yellowing.

DISEASE: Bacterial finger-tip rot

HOST: Banana

Cross sections of fruit with internal discoloration and rot. This disease is also known as Mokillo disease.

DISEASE: Bacterial finger-tip rot

HOST: Banana

Longitudinal sections of fruit with internal discoloration and rot. Healthy (right).

DISEASE: Bacterial finger-tip rot

HOST: Banana

Diseased banana hand with external discoloration.

DISEASE: Bacterial leaf streak

HOST: Millet

Leaf with small, linear, water-soaked, reddish brown stripes.

DISEASE: Bacterial leaf streak

HOST: Millet

Advanced stage of disease.

DISEASE: Wildfire (Angular leaf spot)

HOST: Tobacco

Characteristic symptoms are necrotic, brown spots with angular margins surrounded by distinct yellow halos. The halos are caused by the production of tabtoxin.