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RESULTS

(18)

DISEASE: Aster yellows

HOST: Barley

Infection by this phytoplasm causes twisted awns and sterile florets.

DISEASE: Aster yellows

HOST: Barley

Small necrotic spots on lower leaves and red coalescing streaks on upper leaves.

DISEASE: Bacterial blast and black pit

HOST: Citrus (Lemon)

The term "black pit" refers to black lesions on fruit, which may be specks or large, sunken pits as seen here. They also may be light tan, later becoming reddish brown to black.

DISEASE: Bacterial kernel blight (Leaf blight)

HOST: Barley

Dark, brown discolored kernels at the embryo end and posterior surface.

DISEASE: Bacterial leaf blight

HOST: Barley

Diseased barley plants with typical bleaching of flag leaves. Initial symptoms are water-soaked lesions that later coalesce. Eventually, the entire leaf becomes necrotic and edges roll inward.

DISEASE: Bacterial leaf blight

HOST: Sorghum

The disease begins with interveinal water-soaked streaks that broaden into irregularly shaped areas with necrotic centers and red margins.

DISEASE: Bacterial leaf spot

HOST: Sorghum

Leaf with red and necrotic streaks along veins.

DISEASE: Bacterial leaf spot

HOST: Sorghum

Clustering of small purplish lesions in localized region of leaf.

DISEASE: Bacterial leaf streak

HOST: Sorghum

Symptoms typically begin as water-soaked streaks expanding into irregular-shaped, reddish brown streaks. Symptoms are similar to bacterial leaf stripe.