RESULTS

(12)

FILTER

DISEASE: Fire blight

HOST: Scarlet firethorn

Pyracantha with blighted twig. Ingress was probably through blossoms. Cankers commonly occur on branches.

Fire blight | Scarlet firethorn

DISEASE: Fire blight

HOST: Scarlet firethorn (Pyracantha coccinea)

PATHOGEN: Erwinia amylovora

SOURCE: W. Sinclair

DISEASE: Witches'-broom

HOST: Alfalfa

Alfalfa plant (center) exhibiting stunting and proliferation of stems. Other symptoms are small, rounded, chlorotic, often puckered leaves and a yellowish cast.

Witches'-broom | Alfalfa

DISEASE: Witches'-broom

HOST: Alfalfa (Medicago sativa)

PATHOGEN: 'Candidatus Phytoplasma trifolii'

PATHOGEN SYNONYM: Phytoplasma Clover proliferation group

SOURCE: S. Thomson

DISEASE: Witches'-broom

HOST: Alfalfa

Young plant (left) with small, numerous stems (witches'-broom). Healthy stems (right).

Witches'-broom | Alfalfa

DISEASE: Witches'-broom

HOST: Alfalfa (Medicago sativa)

PATHOGEN: 'Candidatus Phytoplasma trifolii'

PATHOGEN SYNONYM: Phytoplasma Clover proliferation group

SOURCE: S. Thomson