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RESULTS

(8)

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: Stewart's wilt

HOST: Corn (Maize)

Wilted seedlings resulting from systemic invasion.

DISEASE: Stewart's wilt

HOST: Corn (Maize)

Leaf blight is the dominant symptom of this disease. Lesions begin as gray-green to yellow in color and turn brown in time.

DISEASE: Stewart's wilt

HOST: Corn (Maize)

Flea beetle and scars caused by feeding damage. The beetle is a vector and is an overwintering site for the bacterium.

DISEASE: Stewart's wilt

HOST: Corn (Maize)

Young wilted plant with pale green and yellow streaks on leaves.