RESULTS

(6)

FILTER

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 leaf spot (Blight)

HOST: Begonia

Initial symptoms appear as small, blisterlike lesions. As lesions age, they enlarge, producing broad patches of necrotic leaf tissue.

Bacterial leaf spot (Blight) | Begonia

DISEASE: Bacterial leaf spot (Blight)

HOST: Begonia (Begonia sp.)

PATHOGEN: Xanthomonas axonopodis pv. begoniae

PATHOGEN SYNONYM: Xanthomonas campestris pv. begoniae

SOURCE: APS

DISEASE: Bacterial leaf spot (Blight)

HOST: Begonia

Advanced stage of disease with dark, large necrotic areas on leaves and interveinal chlorosis.

Bacterial leaf spot (Blight) | Begonia

DISEASE: Bacterial leaf spot (Blight)

HOST: Begonia (Begonia sp.)

PATHOGEN: Xanthomonas axonopodis pv. begoniae

PATHOGEN SYNONYM: Xanthomonas campestris pv. begoniae

SOURCE: APS

DISEASE: Bacterial leaf spot

HOST: Laurel (California laurel)

Leaf with dark brown, angular spots.

Bacterial leaf spot | Laurel (California laurel)

DISEASE: Bacterial leaf spot

HOST: Laurel (California laurel) (Umbellularia californica)

PATHOGEN: Pseudomonas sp.

PATHOGEN SYNONYM: Pseudomonas lauracearum

SOURCE: W. Sinclair

DISEASE: Bacterial leaf spot

HOST: Peanut

The disease causes water-soaked lesions, particularly on upper leaf surfaces. Lesions enlarge and later display brown necrotic areas. Leaflets become chlorotic and shed prematurely.

Bacterial leaf spot | Peanut

DISEASE: Bacterial leaf spot

HOST: Peanut (Arachis hypogaea)

PATHOGEN: Pseudomonas sp.

SOURCE: P. Subrahmanyam

DISEASE: Bacterial leaf spot

HOST: Verbena

Leaf with purple-brown necrotic spots.

Bacterial leaf spot | Verbena

DISEASE: Bacterial leaf spot

HOST: Verbena (Verbena sp.)

PATHOGEN: Pseudomonas sp.

SOURCE: R. Raabe