Bitter pit and cork spot
Disease
Bitter pit and cork spot
Physiological disorder
Distribution: Widespread
Photos
Individual lesions are dry and do not extend deep into the fruit.
William Turechek, USDA-ARS
B
Small, green to purplish to light brown, slightly sunken lesions appear on the surface of mature fruit (A). Individual lesions on the fruit surface are dry and do not extend deep into the fruit (B); however, cutting into the fruit can reveal numerous internal lesions. Bitter pit usually develops in storage and is most severe at the calyx end. A similar calcium-related disorder that occurs only on d'Anjou pears is named cork spot.