RESULTS

(8)

FILTER

DISEASE: Bacterial flower stalk and leaf necrosis

HOST: Onion

Dark, rotted areas of stalk and leaves caused by systemic invasion of the pathogen.

Bacterial flower stalk and leaf necrosis | Onion

DISEASE: Bacterial flower stalk and leaf necrosis

HOST: Onion (Allium cepa)

PATHOGEN: Pseudomonas marginalis pv. marginalis

SOURCE: S. Mohan

DISEASE: Bacterial flower stalk and leaf necrosis

HOST: Onion

Gray-brown rot of onion after inoculation. Disease starts as small, water-soaked lesions that later develop into slimy, gray-brown rot. The disease progresses downward from the stalk and may rot the entire bulb.

Bacterial flower stalk and leaf necrosis | Onion

DISEASE: Bacterial flower stalk and leaf necrosis

HOST: Onion (Allium cepa)

PATHOGEN: Pseudomonas marginalis pv. marginalis

SOURCE: R. Gitaitis

DISEASE: Bacterial flower stalk and leaf necrosis

HOST: Onion

Leaves with necrosis and rot. The common name for this disease is the same as those used for two other diseases. Also, another common name for this disease is bacterial soft rot.

Bacterial flower stalk and leaf necrosis | Onion

DISEASE: Bacterial flower stalk and leaf necrosis

HOST: Onion (Allium cepa)

PATHOGEN: Pseudomonas marginalis pv. marginalis

SOURCE: S. Mohan

DISEASE: Bacterial leaf scorch

HOST: Pecan

Pecan with necrotic scorched leaves with distinct dark lines between healthy and diseased tissues.

Bacterial leaf scorch | Pecan

DISEASE: Bacterial leaf scorch

HOST: Pecan (Carya illinoinensis)

PATHOGEN: Xylella fastidiosa

SOURCE: T. Brenneman

DISEASE: Bacterial leaf scorch

HOST: Sycamore

Sycamore with scorched leaves and dieback of small branches.

Bacterial leaf scorch | Sycamore

DISEASE: Bacterial leaf scorch

HOST: Sycamore (Platanus occidentalis)

PATHOGEN: Xylella fastidiosa

SOURCE: W. Sinclair

DISEASE: Bacterial leaf scorch

HOST: Sycamore

Close-up of scorched leaves.

Bacterial leaf scorch | Sycamore

DISEASE: Bacterial leaf scorch

HOST: Sycamore (Platanus occidentalis)

PATHOGEN: Xylella fastidiosa

SOURCE: W. Sinclair

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