Bull's-eye Rot
Cryptosporiopsis curvispora
12 host plants
Last updated
This profile contains verified disease data from extension databases. Regional field notes and expert review are in progress.
Bulls-eye rot appears as concentric rings on fruit, resembling a target or bull's-eye pattern. You see brown spots develop during storage or final ripening stages. The fungal disease affects fruit quality and marketability significantly. Manage through good sanitation, proper harvesting techniques, and appropriate storage conditions.
Reduce moisture around affected tissue by improving drainage and air circulation. Remove rotted material cleanly and dispose of it away from the planting area. Avoid wounding healthy tissue during cleanup, as fresh wounds create new entry points. If the problem keeps returning, evaluate whether the site is too wet or poorly drained for the species you are growing.
Quick Reference
Management
Late summer through fall (August-October); peak: 8 weeks before harvest. Developing and ripening fruit most susceptible.
Fall; cool wet conditions (55-65°F) with rain-splash dispersal. 8 weeks pre-harvest is peak fruit vulnerability window.