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Bitter pit is characterized by small dark pits located around the calyx end of fruit that show up late in the season or in storage. This condition is caused by a fruit calcium deficiency.

Bitter pit internal and external symptoms (Strang, UKY)
Bitter pit internal and external symptoms.

(Photo: John Strang, University of Kentucky)

     

Management:

  • Maintain soil pH at approxi-mately 6.5
  • Avoid excessive nitrogen
  • Apply calcium chloride in cover sprays to move calcium through fruit skin
  • Dip fruit in a calcium solution prior to storage

     

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