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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: Maize bushy stunt

HOST: Corn (Maize)

Maize with chlorotic leaf margins and reddening of tips and margins of older leaves.

DISEASE: Maize bushy stunt

HOST: Corn (Maize)

Late stage of disease.

DISEASE: Maize bushy stunt

HOST: Corn (Maize)

Dalbulus maidis, leafhopper vector of 'Candidatus Phytoplasma asteris', the cause of maize bushy stunt.

DISEASE: Marginal leaf blight

HOST: Lettuce

Marginal leaf blight first appears as slimy wilting of leaf margins. Small, reddish lesions may be seen on leaf blades. Infected tissues turn brown to black in time.