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This option predicts the approximate “Infection Degree”
for Apple Scab. The infection severity (None, Light, Me-
dium, or Heavy) is triggered by the accumulation of
sufficient hours of leaf wetness that occur between the
base and upper temperature limits. The Weather Tracker
uses the Mills Apple Scab model as modified by A.L.
Jones 1980. A modified Mills table is shown on the fol-
lowing 2 pages.
This screen shows the infection risk for the day. The risk
on this screen is light. The apple scab risk is calculated
daily.
SBFS MILLS=NONE
000hrs WSU=NONE
Apple Scab
Apple Scab
Sootyblotch Flyspec
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