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IPM Scouting in Stone Fruits

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Alternaria fruit rot - Alternaria spp.
IPM scouting in stone fruits > alternaria fruit rot
Alternaria fruit rot is a minor problem on sweet and tart cherries. The disease is most severe on overripe fruit or where rain-induced cracking or various physical injuries expose the flesh to infection.
Lesions are circular to oblong and slightly sunken, later be-coming firm, flattened and wrinkled, and often dark- green to black be-cause of abundant sporulation by the pathogen.
Dark sweet cherries Gold sweet cherries
Alternaria rot on dark (left) and gold (right) sweet cherries.
Additional information

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Images on this page provided by Alan L. Jones.

This information was developed from A Pocket Guide for IPM Scouting in Stone Fruits by David Epstein, Larry J. Gut, Alan L. Jones and Kimberly Maxson-Stein. Purchase this in a pocket-sized guide for reference in the orchard from MSU Extension (publication E-2840).

The MSU IPM Program maintains this site as an access point to pest management information at MSU. The IPM Program is administered within the Department of Entomology, fueled by research from the Michigan Agricultural Experiment Station, delivered to citizens through MSU Extension, and proud to be a part of Project GREEEN.
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Updated 7/24/07