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RESULTS

(23)

DISEASE: Bacterial fruit blotch

HOST: Watermelon

Symptoms of external disease of mature watermelon.

DISEASE: Bacterial fruit blotch

HOST: Watermelon

Diseased watermelon with copious white foam.

DISEASE: Bacterial leaf and stem necrosis

HOST: Watermelon

Seedlings with necrotic leaves and water-soaked stems.

DISEASE: Bacterial wilt

HOST: Squash

Field with severe symptoms of wilt. Foliage often is chlorotic and leaf margins may be chlorotic and necrotic before plant death. Bacterial ooze may be seen streaming from the xylem when infected stems are cut.

DISEASE: Citrus canker

HOST: Citrus (Orange)

Leaf with leaf miner tunnels and numerous cankerlike lesions.

DISEASE: Citrus canker

HOST: Citrus (Orange)

Upper side of leaves with corky, raised lesions surrounded by yellow halos, a late stage of disease. Such infections usually are visible on lower sides of leaves first and soon after on upper sides.

DISEASE: Citrus canker

HOST: Citrus (Orange)

Yellowish halos are seen around lesions on the upper leaf surface, whereas lesions on the lower surface are more corky in appearance and have sunken centers without halos.

DISEASE: Citrus canker

HOST: Citrus (Orange)

Leaves with necrotic lesions and yellow halos.

DISEASE: Citrus canker

HOST: Citrus (Orange)

Fruit with corky, raised lesions surrounded by yellow tissues. Cankers on leaves also have yellow halos.