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 spot
HOST: Plum
Shot-hole phase of disease.
Bacterial spot | Plum
DISEASE: Bacterial spot
HOST: Plum (Prunus domestica)
PATHOGEN: Xanthomonas arboricola pv. pruni
PATHOGEN SYNONYM: Xanthomonas campestris pv. pruni
SOURCE: T. Burr
DISEASE: Bacterial spot
HOST: Plum
Dark, sunken area on blossom end of fruit.
Bacterial spot | Plum
DISEASE: Bacterial spot
HOST: Plum (Prunus domestica)
PATHOGEN: Xanthomonas arboricola pv. pruni
PATHOGEN SYNONYM: Xanthomonas campestris pv. pruni
SOURCE: S. Thomson
DISEASE: Bacterial spot
HOST: Plum
Dark brown necrotic lesions along main leaf vein. Lesions may drop off, leaving shot-hole effect.
Bacterial spot | Plum
DISEASE: Bacterial spot
HOST: Plum (Prunus domestica)
PATHOGEN: Xanthomonas arboricola pv. pruni
PATHOGEN SYNONYM: Xanthomonas campestris pv. pruni
SOURCE: S. Thomson
DISEASE: Bacterial wilt
HOST: Peanut
First sign of disease is slight drooping or curling of leaves. As the plant declines, foliage turns yellow, followed by wilt and death of stems.
Bacterial wilt | Peanut
DISEASE: Bacterial wilt
HOST: Peanut (Arachis hypogaea)
PATHOGEN: Ralstonia solanacearum
PATHOGEN SYNONYM: Pseudomonas solanacearum
SOURCE: D. Porter
DISEASE: Bacterial wilt
HOST: Peanut
Advanced stage of disease with death of plants.
Bacterial wilt | Peanut
DISEASE: Bacterial wilt
HOST: Peanut (Arachis hypogaea)
PATHOGEN: Ralstonia solanacearum
PATHOGEN SYNONYM: Pseudomonas solanacearum
SOURCE: D. Porter
DISEASE: Bacterial wilt
HOST: Peanut
Vascular discoloration of taproot.
Bacterial wilt | Peanut
DISEASE: Bacterial wilt
HOST: Peanut (Arachis hypogaea)
PATHOGEN: Ralstonia solanacearum
PATHOGEN SYNONYM: Pseudomonas solanacearum
SOURCE: APS
DISEASE: Bacterial wilt
HOST: Squash
Field with severe symptoms of wilt. Foliage often is chlorotic and leaf margins may be chlorotic and necrotic before plant death. Bacterial ooze may be seen streaming from the xylem when infected stems are cut.
Bacterial wilt | Squash
DISEASE: Bacterial wilt
HOST: Squash (Cucurbita maxima)
PATHOGEN: Erwinia tracheiphila
SOURCE: B. Jacobsen, M. Shurtleff
DISEASE: Plum leaf scald
HOST: Plum
Leaf with large necrotic area.
Plum leaf scald | Plum
DISEASE: Plum leaf scald
HOST: Plum (Prunus domestica)
PATHOGEN: Xylella fastidiosa
SOURCE: B. Raju, M. Davis