RESULTS

(4)

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DISEASE: Bacterial blight

HOST: Hazelnut

Diseased young tree with discoloration of the cambium. Dieback of young twigs and branches is characteristic. Other typical symptoms are bud and twig necrosis and small, angular or round, water-soaked leaf spots.

Bacterial blight | Hazelnut

DISEASE: Bacterial blight

HOST: Hazelnut (Corylus americana)

PATHOGEN: Xanthomonas arboricola pv. corylina

SOURCE: J. Pscheidt

DISEASE: Bacterial blight

HOST: Poppy

The disease begins with water-soaked lesions that turn brown to black. They may be surrounded by a translucent ring. Buds, leaves, flowers, and pods are affected.

Bacterial blight | Poppy

DISEASE: Bacterial blight

HOST: Poppy (Eschscholzia californica)

PATHOGEN: Xanthomonas campestris pv. papavericola

SOURCE: M. Daughtrey

DISEASE: Bacterial gall

HOST: Wisteria (Japanese wisteria)

Multiple galls on trunk.

Bacterial gall | Wisteria (Japanese wisteria)

DISEASE: Bacterial gall

HOST: Wisteria (Japanese wisteria) (Wisteria floribunda)

PATHOGEN: Pantoea agglomerans pv. millettiae

PATHOGEN SYNONYM: Erwinia herbicola pv. millettiae

SOURCE: M. Goto

DISEASE: Bacterial gall

HOST: Wisteria (Japanese wisteria)

Gall on branch.

Bacterial gall | Wisteria (Japanese wisteria)

DISEASE: Bacterial gall

HOST: Wisteria (Japanese wisteria) (Wisteria floribunda)

PATHOGEN: Pantoea agglomerans pv. millettiae

PATHOGEN SYNONYM: Erwinia herbicola pv. millettiae

SOURCE: M. Goto