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2009 Apple Scab Infection Periods 22 March - 27 Apr*
Penn State-FREC, Biglerville, PA

* Mills Apple Scab Disease Model. Mature spores started releasing 3/31/09.

Beginning of peak ascospore maturity 4/19/09 •Apr 29 through May 6 (possible scab infection**)

forecast based on Skybit Ag E-Weather IPM Apple Disease Report


*Data as of 9:00 AM on 13 April, 2009.
L = Low; M = Moderate; S = Severe


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Last modified April 29, 2009
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