RESULTS

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DISEASE: Elm leaf scorch

HOST: Elm

Diseased tree with scorch at leaf margins.

Elm leaf scorch | Elm

DISEASE: Elm leaf scorch

HOST: Elm (Ulmus americana)

PATHOGEN: Xylella fastidiosa

SOURCE: J. Sherald, M. Shurtleff

DISEASE: Elm leaf scorch

HOST: Elm

Severely diseased tree with dieback and scorched leaves.

Elm leaf scorch | Elm

DISEASE: Elm leaf scorch

HOST: Elm (Ulmus americana)

PATHOGEN: Xylella fastidiosa

SOURCE: W. Sinclair

DISEASE: European stone fruit yellows

HOST: Almond

The disease causes yellowing and rolling of leaves (right). Leaves become thick and rough in texture. Healthy leaves (left).

European stone fruit yellows | Almond

DISEASE: European stone fruit yellows

HOST: Almond (Prunus dulcis)

PATHOGEN: 'Candidatus Phytoplasma prunorum'

PATHOGEN SYNONYM: Phytoplasma Apple proliferation group

SOURCE: E. Seemueller

DISEASE: Sour skin

HOST: Onion

Symptoms of sour skin are characterized by slimy, pale yellow to light brown decay.

Sour skin | Onion

DISEASE: Sour skin

HOST: Onion (Allium cepa)

PATHOGEN: Burkholderia cepacia

PATHOGEN SYNONYM: Pseudomonas cepacia

SOURCE: Dep. of Agric. & Agri-Food, Government of Canada

DISEASE: Sour skin

HOST: Onion

Characteristic pale yellow to browning of infected area.

Sour skin | Onion

DISEASE: Sour skin

HOST: Onion (Allium cepa)

PATHOGEN: Burkholderia cepacia

PATHOGEN SYNONYM: Pseudomonas cepacia

SOURCE: R. Gitaitis