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Blossom end rot of tomato (Lycopersicon esculentum) fruits, caused by a calcium deficiency.

 

Hibiscus flower with necrosis due to calcium deficiency.

Blossom end rot of tomato (Lycopersicon esculentum) fruits, caused by a calcium deficiency.

Definition

Blossom end rot is the softening, discoloration, and often disintegration of plant tissue at the blossom end of a fruit, caused by a calcium deficiency.