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RESULTS

(8)

DISEASE: Australian citrus dieback

HOST: Citrus (Grapefruit)

Leaves with mottled chlorosis.

DISEASE: Australian citrus dieback

HOST: Citrus (Grapefruit)

Late stage of disease. Note yellowing of leaf veins and entire leaves.

DISEASE: Australian citrus dieback

HOST: Citrus (Lime)

Severe decline, a late stage of disease. The disease spreads slowly in mature trees, progressing faster in young trees.

DISEASE: Bacterial pustule

HOST: Soybean

Early symptoms are minute, pale green spots on young leaves. Later, small pustules form in the center of spots, best observed on underside of leaves. Spots vary in size and darken with age and lesions coalesce. Dead areas are torn away by wind.

DISEASE: Citrus stubborn disease

HOST: Citrus (sp. unknown)

Characteristic symptoms of thickened peel at peduncle end and aborted seeds.

DISEASE: Citrus stubborn disease

HOST: Citrus (Orange)

Severely stunted sweet orange tree. Foliage is dense and abnormally upright. Leaves may be cupped and unusually thick. They also may be chlorotic and mottled.

DISEASE: Citrus stubborn disease

HOST: Citrus (Orange)

Fruit from a diseased tree are frequently lopsided or acorn-shaped, usually few and small. They may not color at stem end.

DISEASE: Citrus stubborn disease

HOST: Citrus (Orange)

Sweet orange exhibiting off-season flowering and crop heterogeneity. Diseased trees generally have shoots with shortened internodes, which lead to rosettes with cupped leaves.