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 blight

HOST: Soybean

Leaves with yellowish brown necrotic lesions. Lesions also may be yellow to light brown and bordered by yellowish green halos. Lesions occur on stems, petioles, and pods.

Bacterial blight | Soybean

DISEASE: Bacterial blight

HOST: Soybean (Glycine max)

PATHOGEN: Pseudomonas syringae pv. glycinea

SOURCE: J. B. Sinclair

DISEASE: Bacterial leaf spot

HOST: Soybean

Early symptoms of bacterial blight.

Bacterial leaf spot | Soybean

DISEASE: Bacterial leaf spot

HOST: Soybean (Glycine max)

PATHOGEN: Pseudomonas syringae pv. glycinea

SOURCE: D. Cupples

DISEASE: Sweet potato little leaf

HOST: Sweet potato

Infected plant (left) and healthy plant (right).

Sweet potato little leaf | Sweet potato

DISEASE: Sweet potato little leaf

HOST: Sweet potato (Ipomoea batatas)

PATHOGEN: 'Candidatus Phytoplasma aurantifolia'

PATHOGEN SYNONYM: Phytoplasma Peanut witches'-broom group

SOURCE: R. McCoy, M. Davis

DISEASE: Witches'-broom

HOST: Citrus (Lime)

Lime tree with compact, small leaves (witches'-broom). Leaves on older brooms dry out and eventually drop, leaving dead, bare branches. There are no flowers or fruit on brooms.

Witches'-broom | Citrus (Lime)

DISEASE: Witches'-broom

HOST: Citrus (Lime) (Citrus sp.)

PATHOGEN: 'Candidatus Phytoplasma aurantifolia'

PATHOGEN SYNONYM: Phytoplasma Peanut witches'-broom group

SOURCE: J. Bove, M. Garnier

DISEASE: Witches'-broom

HOST: Pigeon pea

Pigeon pea with witches'-broom.

Witches'-broom | Pigeon pea

DISEASE: Witches'-broom

HOST: Pigeon pea (Cajanus cajan)

PATHOGEN: 'Candidatus Phytoplasma aurantifolia'

PATHOGEN SYNONYM: Phytoplasma Peanut witches'-broom group

SOURCE: R. McCoy, M. Davis