2009 Apple Scab Infection Periods 29 Jun - 2 Aug* Penn State-FREC, Biglerville, PA
* Spectrum Weather Data Systems & Mills Apple Scab Disease Model. First mature ascospores on 3/31/09.
**Beginning of peak ascospore maturity 4/19/09. Found first leaf sysmptoms of scab on Red Del. on 5/4/09
End of primary as of 6/15/09. No more spore release as of 6/21/09
•Aug 3-5 forecast based on Skybit Ag E-Weather IPM Apple Disease Report. No scab infection predicted
){kind=link}