Fruit rot

Gloeosporium album

The fungus usually enters the fruit via a lenticel producing a cheek rot, but it may also occur around the stalk or calyx where it enters via a wound or small crack. The rot is mid-brown (possibly darker on Egremont Russet), circular, moderately firm and frequently, but not always, forms concentric zones of different colours as the tissue is invaded. Lesions usually have yellow centres on Cox, progressing to dark brown at the interface between healthy and infected tissue. On Egremont Russet the rots are often uniform brown.

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