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| Powdery mildew of cherry - Podosphaera clandestine (Wallr.:Fr.) Lév. | |||
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On tart cherry, mildew appears first as circular, white, felt-like patches on young leaves. Spreading rapidly, it eventually engulfs entire leaves. Small, brown to black, spherical bodies (cleisto-thecia) appear in the felt-like patches as the season progresses. Severely in-fected leaves exhibit upward rolling, becoming stiff and brittle with age. Mildew on green fruit appears as shiny, red blotches often with white fungal growth in the center. Fruit infections are rare in the eastern U.S. Mildew is favored by dry summers with intermittent periods of high humidity and moisture. |
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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). |
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Updated: 03/03/08