Alternaria Fruit Rot
Alternaria spp
12 host plants
Last updated
Data Coverage 3 of 6 dimensions
Brown, sunken lesions develop on fruit with concentric rings and dark spore masses in center. Remove infected fruit and improve air circulation. Avoid overhead watering and handle fruit gently.
Harvest promptly to prevent overripe fruit. Do not pick or handle fruit when it is wet. Improve drainage around susceptible plants and avoid overwatering. Remove affected material and dispose of it away from the garden. When replanting, choose resistant varieties and amend the soil for better drainage if waterlogging was part of the problem.
Quick Reference
Causal Agent
Alternaria spp
Host Plants
12
Management
Cultural Controls
- Harvest promptly to prevent overripe fruit.
- Do not pick or handle fruit when it is wet.
- Hand harvesting results in less rot than machine harvesting.
- Avoid wounding or bruising fruit during harvest.
- Cool berries rapidly after harvest.
- Clean plant debris from picking buckets, packing lines and inspection belts frequently.
Host Plants (12)
Vaccinium angustifolium Lowbush Blueberry Vaccinium corymbosum Highbush Blueberry Vaccinium crassifolium Creeping Blueberry, Thick-leaved Whortlberry Vaccinium macrocarpon Cranberry American Cranberry Vaccinium membranaceum Big Huckleberry, Mountain Huckleberry Thinleaf Huckleberry Vaccinium moupinense Himalayan Blueberry Vaccinium ovalifolium Oval-leaf Blueberry Vaccinium ovatum Box Huckleberry, Evergreen Huckleberry Vaccinium parvifolium Red Huckleberry, Red Whortleberry Vaccinium sikkimense Sikkim Blueberry Vaccinium uliginosum Bog Blueberry, Bog Bilberry Vaccinium vitis Vaccinium vitis