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RESULTS

(32)

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 blight

HOST: Tulip

The disease causes white veins of leaves, yellow vascular bundles, and yellow bacterial slime on bulbs.

DISEASE: Bacterial blight

HOST: Tulip

Stunted plants with wrinkled leaves.

DISEASE: Bacterial kernel blight (Leaf blight)

HOST: Barley

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

DISEASE: Bacterial leaf blight and stalk rot

HOST: Corn (Maize)

Corn husk leaves with brownish red streaks and blotches. The leaves turn brown but may later become gray or white. Symptoms vary depending upon genotype.

DISEASE: Bacterial leaf blight and stalk rot

HOST: Corn (Maize)

Leaves with whitish streaks.

DISEASE: Bacterial leaf blight and stalk rot

HOST: Corn (Maize)

Lesions may vary from brown to red, sometimes gray or white, and some genotypes have red borders around lesions.

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.