RESULTS

(5)

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DISEASE: Bacterial blast and black pit

HOST: Citrus (Lemon)

The term "black pit" refers to black lesions on fruit, which may be specks or large, sunken pits as seen here. They also may be light tan, later becoming reddish brown to black.

Bacterial blast and black pit | Citrus (Lemon)

DISEASE: Bacterial blast and black pit

HOST: Citrus (Lemon) (Citrus limon)

PATHOGEN: Pseudomonas syringae pv. syringae

SOURCE: J. Menge

DISEASE: Bacterial blast and black pit

HOST: Citrus (Lime)

Characteristic symptoms of brownish black lesions on twigs and leaves (blast), starting with infection of petioles. Black pit refers to brown to black sunken spots on fruit, 5 to 20 mm in diameter.

Bacterial blast and black pit | Citrus (Lime)

DISEASE: Bacterial blast and black pit

HOST: Citrus (Lime) (Citrus sp.)

PATHOGEN: Pseudomonas syringae pv. syringae

SOURCE: P. Broadbent

DISEASE: Crown gall (Leafy gall)

HOST: Datura

Crown gall or leafy gall of datura.

Crown gall (Leafy gall) | Datura

DISEASE: Crown gall (Leafy gall)

HOST: Datura (Datura sp.)

PATHOGEN: Agrobacterium tumefaciens

PATHOGEN SYNONYM: Rhizobium sp.

SOURCE: M. Schroth

DISEASE: Periwinkle wilt

HOST: Periwinkle

Infected plants with stunting and sparse foliage (center and right).

Periwinkle wilt | Periwinkle

DISEASE: Periwinkle wilt

HOST: Periwinkle (Vinca sp.)

PATHOGEN: Xylella fastidiosa

SOURCE: R. McCoy, M. Davis

DISEASE: Periwinkle wilt

HOST: Periwinkle

Draeculacephala minerva, leafhopper vector of Xylella fastidiosa on plants such as periwinkle and watercress.

Periwinkle wilt | Periwinkle

DISEASE: Periwinkle wilt

HOST: Periwinkle (Vinca sp.)

PATHOGEN: Xylella fastidiosa

SOURCE: J. Clark, A. Purcell, M. Davis