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

Berrien Springs Disease Report: Wetting events since 4/5 (Report issued 4/19/2024 7:50 )

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: 3/4 to 4/19/2024. Events between 4/5 and 4/19/2024 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 Berrien Springs 3/31 9-10PM 4/5 9-10AM Wet: 91
Span: 109		 40.4 0.97 Heavy (Symptoms appear: 4/18) None No risk until pre-bloom period
2 Berrien Springs 4/7 5-6PM 4/8 11PM - Midnight Wet: 5
Span: 7		 49.5 0.13 None None No risk until pre-bloom period
3 Berrien Springs 4/11 2-3AM 4/12 9-10AM Wet: 32
Span: 32		 46.9 0.7 Moderate (Symptoms appear: 4/29) None No risk until pre-bloom period
4 Berrien Springs 4/17 Midnight-1AM 4/17 Noon-1PM Wet: 6
Span: 13		 59.9 0.47 None None No risk until pre-bloom period
5 Berrien Springs 4/18 9-10PM Ongoing. Last hour with moisture: 4/19 6-7AM Wet: 10
Span: 10		 44.9 0.19 None None No risk until pre-bloom period

*NOTE: Infection is predicted with fewer hours than listed in the 'Wet hrs @ avg temp' column. This can happen when there are falling temperatures. Infection may have occurred early in the period during warm temperatures, but the colder temperatures later in the period decrease the number displayed as the average temperature for the period.
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