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Monitoring Fruit for Disease—Fruit Development

On this page
  • Bacterial canker lesions
  • Buckeye rot damage
  • Late blight discoloration

Watch fruit for diseases such as bacterial canker, late blight, and buckeye rot. Use the photos below to identify symptoms in the field. Names link to more information on identification and management.

Click on photos to enlarge

Bacterial canker
Bacterial canker lesions
Identification tip: Look for a "bird's-eye spot"—a light brown spot with white halo—on green fruit.

Buckeye rot
Buckeye rot damage
Identification tip: Damaged green fruit showing leathery, brown spot with concentric rings.

Late blight
Late blight discoloration
Identification tip: Late blight causes fruit discoloration.


Statewide IPM Program, Agriculture and Natural Resources, University of California
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Agriculture and Natural Resources, University of California

Accessibility   /PMG/C783/m783fpfruitmon.html revised: May 19, 2014. Contact webmaster.