RESULTS

(5)

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DISEASE: Phony disease (Phony peach)

HOST: Peach

Tree with characteristic reduced growth. Foliage is dark green, then turns yellowish. Twigs become brittle and branches die back. Fruit are small.

Phony disease (Phony peach) | Peach

DISEASE: Phony disease (Phony peach)

HOST: Peach (Prunus persica)

PATHOGEN: Xylella fastidiosa

SOURCE: P. C. Anderson

DISEASE: Phony disease (Phony peach)

HOST: Peach

Twigs on diseased trees have shortened internodes and increased lateral branching.

Phony disease (Phony peach) | Peach

DISEASE: Phony disease (Phony peach)

HOST: Peach (Prunus persica)

PATHOGEN: Xylella fastidiosa

SOURCE: M. Davis

DISEASE: Sumatra disease

HOST: Clove

Diseased tree with defoliation and dieback.

Sumatra disease | Clove

DISEASE: Sumatra disease

HOST: Clove (Syzygium aromaticum)

PATHOGEN: Ralstonia syzygii

SOURCE: A. Hayward

DISEASE: Sweet potato scab

HOST: Sweet potato

Tubers with large, dark scabs.

Sweet potato scab | Sweet potato

DISEASE: Sweet potato scab

HOST: Sweet potato (Ipomoea batatas)

PATHOGEN: Streptomyces ipomoeae

SOURCE: APS

DISEASE: Sweet potato scab

HOST: Sweet potato

Black and necrotic decay of fibrous roots.

Sweet potato scab | Sweet potato

DISEASE: Sweet potato scab

HOST: Sweet potato (Ipomoea batatas)

PATHOGEN: Streptomyces ipomoeae

SOURCE: W. Martin