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RESULTS

(36)

DISEASE: Citrus variegated chlorosis

HOST: Citrus (Orange)

Small, hard, diseased fruit interspersed with three normal fruits for comparison. Diseased fruit often exhibit sunburn symptoms.

DISEASE: Citrus variegated chlorosis

HOST: Citrus (Orange)

Diseased tree with sparse foliage.

DISEASE: Citrus variegated chlorosis

HOST: Citrus (Orange)

Typical symptoms of the disease are discoloration of infected leaves, brown spots on lower sides of leaves, chlorosis on upper sides, and undersized fruit (left). Healthy fruit and leaves (right).

DISEASE: Citrus variegated chlorosis

HOST: Citrus (Orange)

Severely infected tree with typical stunting and chlorosis. Symptoms may appear on only one branch of the canopy.

DISEASE: Coffee leaf scorch

HOST: Coffee

Diseased twig with yellowish, stunted leaves (left). Healthy twig with normal-sized leaves (right).

DISEASE: Elm leaf scorch

HOST: Elm

Diseased tree with scorch at leaf margins.

DISEASE: Elm leaf scorch

HOST: Elm

Severely diseased tree with dieback and scorched leaves.

DISEASE: Elm yellows

HOST: Elm

Symptoms of elm yellows occasionally appear on one branch before others, but more often they involve the entire crown.

DISEASE: Elm yellows

HOST: Elm

Diseased twig (right) with epinasty, chlorosis, and yellowing of leaves. Sometimes both yellow and green leaves occur on same branch. Healthy branch (left).