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  • Michigan State University Extension
  • Michigan State University Ag Bio Research
  • Project GREEEN

Elk Rapids Disease Report: Wetting events since 4/4 (Report issued 4/18/2024 21:01 )

Wetting periods start with rainfall (at least 0.01 inch) and continue until the start of at least eight hours without moisture (rainfall, leaf wetness, high relative humidity). Wetting periods are classified as "ongoing" until eight consecutive dry hours have passed. After that, the official end of the wetting period is recorded (the start of the 8 hour dry period).

Time period assessed for wetting events: 3/31 to 4/18/2024. Events between 4/4 and 4/18/2024 shown.


Wet Period Station Start of wetting period End of wetting period Duration (Hrs.) Avg temp (F) Rainfall (in.) Apple Scab (leaf) Cherry Leaf Spot Grape Leaf Black Rot
1 Elk Rapids 4/4 3-4AM 4/5 8-9AM Wet: 28
Span: 30		 36.5 0.13 None None No risk until pre-bloom period
2 Elk Rapids 4/9 5-6AM 4/9 9-10AM Wet: 5
Span: 5		 46.8 0.01 None None No risk until pre-bloom period
3 Elk Rapids 4/11 5-6PM 4/12 3-4PM Wet: 23
Span: 23		 43.4 0.54 Light (Symptoms appear: 5/7) None No risk until pre-bloom period
4 Elk Rapids 4/14 1-2AM 4/14 8-9AM Wet: 8
Span: 8		 47 0.41 None None No risk until pre-bloom period
5 Elk Rapids 4/15 9-10AM 4/15 9-10AM Wet: 1
Span: 1		 48.6 0.01 None None No risk until pre-bloom period
6 Elk Rapids 4/17 Midnight-1AM 4/18 4-5AM Wet: 20
Span: 29		 49.2 0.2 Moderate (Symptoms appear: 5/14) None No risk until pre-bloom period

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