*
Conditions for Powdery Mildew (Uncinula necator)
infection occur
when there is at least 0.1" of
rainfall or 13 hrs of leaf wetness and > 50' F; spore germination
inhibited >95
F. Require 5-7 days cycle from infection
to conidial production.
Rainfall not required for
release of secondary spores. Data as of 8:00 AM 8/4/08.
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