DISEASE: Bacterial leaf spot (Blight)
HOST: Poinsettia
Blighted leaves and stems.
Bacterial leaf spot (Blight) | Poinsettia
DISEASE: Bacterial leaf spot (Blight)
HOST: Poinsettia (Euphorbia pulcherrima)
PATHOGEN: Curtobacterium flaccumfaciens pv. poinsettiae
SOURCE: APS
DISEASE: Bacterial leaf spot (Blight)
HOST: Poinsettia
Poinsettia with diseased stem. Woody stems may have a yellowed cortex and dark vascular tissues. The stem tip may curve with deformed terminal leaves.
Bacterial leaf spot (Blight) | Poinsettia
DISEASE: Bacterial leaf spot (Blight)
HOST: Poinsettia (Euphorbia pulcherrima)
PATHOGEN: Curtobacterium flaccumfaciens pv. poinsettiae
SOURCE: APS
DISEASE: Bacterial leaf spot (Blight)
HOST: Poinsettia
Leaves with small, dark spots, an early stage of disease.
Bacterial leaf spot (Blight) | Poinsettia
DISEASE: Bacterial leaf spot (Blight)
HOST: Poinsettia (Euphorbia pulcherrima)
PATHOGEN: Curtobacterium flaccumfaciens pv. poinsettiae
SOURCE: A. Alvarez
DISEASE: Bacterial leaf spot
HOST: Hibiscus
Hibiscus leaves with large, black spots with chlorosis occurring near some lesions.
Bacterial leaf spot | Hibiscus
DISEASE: Bacterial leaf spot
HOST: Hibiscus (Hibiscus sp.)
PATHOGEN: Xanthomonas campestris pv. esculenti
SOURCE: R. Raabe
DISEASE: Sweet potato scab
HOST: Sweet potato
Tubers with large, dark scabs.
Sweet potato scab | Sweet potato
DISEASE: Sweet potato scab
HOST: Sweet potato (Ipomoea batatas)
PATHOGEN: Streptomyces ipomoeae
SOURCE: APS
DISEASE: Sweet potato scab
HOST: Sweet potato
Black and necrotic decay of fibrous roots.
Sweet potato scab | Sweet potato
DISEASE: Sweet potato scab
HOST: Sweet potato (Ipomoea batatas)
PATHOGEN: Streptomyces ipomoeae
SOURCE: W. Martin