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RESULTS

(12)

DISEASE: Bacterial leaf spot (Head rot)

HOST: Cauliflower

Leaves with tiny lesions surrounded by large halos.

DISEASE: Bacterial leaf spot (Head rot)

HOST: Cauliflower

Section of a cauliflower head with discolored, infected tissues.

DISEASE: Bacterial leaf spot (Head rot)

HOST: Lettuce

Leaf with black, greasy spots that tend to be vein delimited. Lesions begin as small, angular, water-soaked lesions that coalesce, resulting in large necrotic areas.

DISEASE: Foamy canker

HOST: Almond

White, macerated tissues near cambium region is characteristic of disease. Foam is usually associated with cankers. The disease is suspected to be bacterial but the causal agent has not been identified.

DISEASE: Foamy canker

HOST: Almond

Amber red-colored ooze sliding down the trunk. The causal agent has not been identified.

DISEASE: Foamy canker

HOST: Koa

Foamy canker of koa is associated with bacteria and yeast. The causal agent has not been identified.

DISEASE: Foamy canker

HOST: Koa

Dieback of koa tree. The causal agent has not been identified.

DISEASE: Xanthomonas leaf blight

HOST: Onion

This was the first photo of onion leaf blight, which was considered a controversial finding for 10 years until an outbreak occurred in the West Indies.

DISEASE: Xanthomonas leaf blight

HOST: Onion

Diseased leaf with necrotic internal tissues.