DISEASE: Angular leaf spot
HOST: Pumpkin
Leaf with lesions surrounded by light greenish halos.
Angular leaf spot | Pumpkin
DISEASE: Angular leaf spot
HOST: Pumpkin (Cucurbita pepo)
PATHOGEN: Pseudomonas syringae pv. lachrymans
SOURCE: A. Simkus, M. Shurtleff
DISEASE: Aster yellows
HOST: Barley
Infection by this phytoplasm causes twisted awns and sterile florets.
Aster yellows | Barley
DISEASE: Aster yellows
HOST: Barley (Hordeum vulgare)
PATHOGEN: 'Candidatus Phytoplasma asteris'
PATHOGEN SYNONYM: Phytoplasma Aster yellows group
SOURCE: E. Banttari
DISEASE: Aster yellows
HOST: Barley
Small necrotic spots on lower leaves and red coalescing streaks on upper leaves.
Aster yellows | Barley
DISEASE: Aster yellows
HOST: Barley (Hordeum vulgare)
PATHOGEN: 'Candidatus Phytoplasma asteris'
PATHOGEN SYNONYM: Phytoplasma Aster yellows group
SOURCE: E. Banttari
DISEASE: Bacterial fruit blotch
HOST: Pumpkin
Pumpkin exhibiting early stage of disease on rind.
Bacterial fruit blotch | Pumpkin
DISEASE: Bacterial fruit blotch
HOST: Pumpkin (Cucurbita pepo)
PATHOGEN: Acidovorax citrulli
PATHOGEN SYNONYM: Acidovorax avenae subsp. citrulli
SOURCE: R. Gitaitis
DISEASE: Bacterial fruit blotch
HOST: Pumpkin
Leaves with large necrotic areas.
Bacterial fruit blotch | Pumpkin
DISEASE: Bacterial fruit blotch
HOST: Pumpkin (Cucurbita pepo)
PATHOGEN: Acidovorax citrulli
PATHOGEN SYNONYM: Acidovorax avenae subsp. citrulli
SOURCE: R. Gitaitis
DISEASE: Bacterial fruit blotch
HOST: Pumpkin
Severe internal rot.
Bacterial fruit blotch | Pumpkin
DISEASE: Bacterial fruit blotch
HOST: Pumpkin (Cucurbita pepo)
PATHOGEN: Acidovorax citrulli
PATHOGEN SYNONYM: Acidovorax avenae subsp. citrulli
SOURCE: R. Gitaitis
DISEASE: Bacterial fruit blotch
HOST: Pumpkin
Severe internal rot.
Bacterial fruit blotch | Pumpkin
DISEASE: Bacterial fruit blotch
HOST: Pumpkin (Cucurbita pepo)
PATHOGEN: Acidovorax citrulli
PATHOGEN SYNONYM: Acidovorax avenae subsp. citrulli
SOURCE: R. Gitaitis
DISEASE: Bacterial kernel blight (Leaf blight)
HOST: Barley
Dark, brown discolored kernels at the embryo end and posterior surface.
Bacterial kernel blight (Leaf blight) | Barley
DISEASE: Bacterial kernel blight (Leaf blight)
HOST: Barley (Hordeum vulgare)
PATHOGEN: Pseudomonas syringae pv. syringae
SOURCE: C. Martinez-Miller
DISEASE: Bacterial leaf blight and stalk rot
HOST: Corn (Maize)
Corn husk leaves with brownish red streaks and blotches. The leaves turn brown but may later become gray or white. Symptoms vary depending upon genotype.
Bacterial leaf blight and stalk rot | Corn (Maize)
DISEASE: Bacterial leaf blight and stalk rot
HOST: Corn (Maize) (Zea mays)
PATHOGEN: Acidovorax avenae
PATHOGEN SYNONYM: Acidovorax avenae subsp. avenae
SOURCE: A. Alvarez