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

East Lansing (MSUHort) Disease Report: Wetting events since 4/23 (Report issued 5/7/2024 1:41 )

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: 3/6 to 5/7/2024. Events between 4/23 and 5/7/2024 shown.
Hourly weather data missing for: 4/30/2024 11AM-Noon - 4/30/2024 Noon-1PM (2 hours); Total of 2 missing hours
Hourly weather data estimated for: 4/30/2024 11AM-Noon - 4/30/2024 Noon-1PM (2 hours); Total of 2 estimated hours
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 East Lansing (MSUHort) 4/23 6-7AM 4/23 6-7AM Wet: 1
Span: 1
52.7 0.01 None None No risk until pre-bloom period
2 East Lansing (MSUHort) 4/23 8-9PM 4/24 1-2AM Wet: 6
Span: 6
49.3 0.33 None None No risk until pre-bloom period
3 East Lansing (MSUHort) 4/27 4-5AM 4/27 8-9AM Wet: 5
Span: 5
56.6 0.11 None None No risk until pre-bloom period
4 East Lansing (MSUHort) 4/28 7-8AM 4/28 10-11AM Wet: 4
Span: 4
63.3 0.39 None None No risk until pre-bloom period
5 East Lansing (MSUHort) 5/2 11PM - Midnight 5/4 8-9AM Wet: 28
Span: 34
60.3 0.54 Heavy (Symptoms appear: 5/16) High Yes
6 East Lansing (MSUHort) 5/5 2-3AM 5/5 10-11AM Wet: 9
Span: 9
60.1 0.01 None Low None