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: Gypsophila gall
HOST: Gypsophila (Baby's breath)
Gall on gypsophila stem.
Gypsophila gall | Gypsophila (Baby's breath)
DISEASE: Gypsophila gall
HOST: Gypsophila (Baby's breath) (Gypsophila elegans)
PATHOGEN: Pantoea agglomerans pv. agglomerans
SOURCE: S. Manulis
DISEASE: Gypsophila gall
HOST: Gypsophila (Baby's breath)
Gall 1 month after inoculation of stem.
Gypsophila gall | Gypsophila (Baby's breath)
DISEASE: Gypsophila gall
HOST: Gypsophila (Baby's breath) (Gypsophila elegans)
PATHOGEN: Pantoea agglomerans pv. agglomerans
SOURCE: S. Manulis
DISEASE: Gypsophila gall
HOST: Gypsophila (Baby's breath)
Brown gall on crown of gypsophila.
Gypsophila gall | Gypsophila (Baby's breath)
DISEASE: Gypsophila gall
HOST: Gypsophila (Baby's breath) (Gypsophila elegans)
PATHOGEN: Pantoea agglomerans pv. agglomerans
SOURCE: S. Manulis
DISEASE: Gypsophila gall
HOST: Gypsophila (Baby's breath)
Galls (left) caused by Pantoea agglomerans pv. agglomerans tend to be brownish, and those (right) caused by P. agglomerans pv. betae are white.
Gypsophila gall | Gypsophila (Baby's breath)
DISEASE: Gypsophila gall
HOST: Gypsophila (Baby's breath) (Gypsophila elegans)
PATHOGEN: Pantoea agglomerans pv. agglomerans
SOURCE: S. Manulis
DISEASE: Halo blight
HOST: Coffee
Leaf with blackish lesions surrounded by yellow halos.
Halo blight | Coffee
DISEASE: Halo blight
HOST: Coffee (Coffea dewevrei)
PATHOGEN: Pseudomonas syringae pv. garcae
SOURCE: S. Mohan
DISEASE: Halo blight
HOST: Coffee
Young blighted coffee plant.
Halo blight | Coffee
DISEASE: Halo blight
HOST: Coffee (Coffea dewevrei)
PATHOGEN: Pseudomonas syringae pv. garcae
SOURCE: S. Mohan
DISEASE: Halo blight
HOST: Coffee
Stem blight stage of disease.
Halo blight | Coffee
DISEASE: Halo blight
HOST: Coffee (Coffea dewevrei)
PATHOGEN: Pseudomonas syringae pv. garcae
SOURCE: S. Mohan
DISEASE: Halo blight
HOST: Coffee
Coffee leaf with lesion on margin.
Halo blight | Coffee
DISEASE: Halo blight
HOST: Coffee (Coffea dewevrei)
PATHOGEN: Pseudomonas syringae pv. garcae
SOURCE: S. Mohan