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RESULTS

(7)

DISEASE: Bacterial wilt

HOST: Grass

Initial symptom is a lime-green, yellow, or blue-green appearance of the grass. The next symptom is small, reddish brown spots on leaf blades.

DISEASE: Bacterial wilt

HOST: Grass

Infected turf grass with patches of yellowing, wilted, and dead grass.

DISEASE: Bacterial wilt

HOST: Grass

Late stage of disease development. Dead grass has a light brown or bleached tan appearance.

DISEASE: Black chaff (Bacterial leaf streak)

HOST: Wheatgrass

Lesions on leaves first appear as water-soaked, translucent, long, narrow streaks. They later turn brown and necrotic and often coalesce into blighted areas.

DISEASE: Black chaff (Bacterial leaf streak)

HOST: Wheatgrass

Close-up of leaf with brown necrotic streaks.

DISEASE: Drippy nut disease

HOST: Oak

Ooze from young twig inoculated with Brenneria quercina.

DISEASE: Drippy nut disease

HOST: Oak

Ooze from infected acorn. Copious ooze drips from infected acorns, leaving sticky spots on objects under tree canopy. Infections are associated with insect oviposit wounds.