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Citrus black spot

"Freckle spot" symptom type or "early virulent spot". Reddish or colorless spots on fruit lacking a halo which are a sign of heavy infection.

Citrus black spot
Close up of 'freckle spot' symptom type or 'early virulent spot' on fruit. Reddish or colorless spots lacking a halo which are a sign of heavy infection.
Citrus black spot

"Virulent spot" symptom type. Fusion and expansion of many lesions covering part of the surface of heavy infected fruit giving a lathery appearance.

Citrus black spot

"Cracked spot" symptom type on fruit. Lesions with cracked surface and irregular margins.


Citrus black spot

Close up of "Cracked spot" symptom type on fruit. Lesions with cracked surface and irregular margins.

Citrus black spot

Symptom on green fruit that can become hard spots later in the season.

Citrus black spot

Symptom on green fruit that can become hard spots later in the season.

Citrus black spot

"Hard spot" symptom type on fruit. This is the most typical symptom of CBS. Usually appears between the beginning of yellow coloration and maturity.


Citrus black spot

"Hard spot" symptom type on fruit. This is the most typical symptom of CBS. Usually appears between the beginning of yellow coloration and maturity.

Citrus black spot

"Hard spot" symptom type on fruit. This is the most typical symptom of CBS. Usually appears between the beginning of yellow coloration and maturity.

Citrus black spot

Early stage of hard spot symptoms on fruit. Note green tissue surrounding the lesions.

Citrus black spot

Longitudinal section of a hard spot lesion on fruit.


Citrus canker

Concentric circles found on leaf lesions.

Citrus canker

Close-up of lesions on front of grapefruit leaf.

Citrus canker

Yellow halo surrounding leaf lesion.


Citrus canker

Leaf lesions on grapefruit, top view.

Citrus canker

Leaf lesions on grapefruit, bottom view.

Citrus canker

Leaf lesions on grapefruit, chlorotic halo.


Citrus canker

Whole leaf symptoms on top and bottom of grapefruit leaves.

Citrus canker

Fruit lesion with center cracking; Photo by Jeffrey W. Lotz, Florida Dep. of Ag. and Consumer Services,

Citrus canker

Fruit, leaf, and stem canker lesions.


Citrus canker

Typical leaf, stem, and fruit symptoms on grapefruit.

Citrus canker

Xanthomonas campestris pv. citri infection on fruit of Citrus unshiu (satsuma) showing crater-like lesions.


Citrus canker

Stem canker caused by Xanthomonas campestris pv. citri on Citrus natsudaidai.

Citrus canker

Xanthomonas campestris pv. citri on stem of Citrus sp.; outer layer of bark removed to show brown lesions.