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

North Central Disease Report: Most recent wetting event (Report issued 3/28/2024 11:27 )

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).

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 Time Period Assessed
Arlene 3/26 4-5AM 3/27 6-7AM Wet: 23
Span: 27
41.6 0.49 None No risk until first bract leaves have expanded. No risk until pre-bloom period Most recent period shown: 3/21 11PM - Midnight to 3/28/2024 10-11AM
Gaylord 3/26 6-7AM 3/27 7-8AM Wet: 22
Span: 26
40.4 0.4 No risk until after green tip No risk until first bract leaves have expanded. No risk until pre-bloom period Most recent period shown: 3/21 11PM - Midnight to 3/28/2024 10-11AM
Kalkaska 3/26 4-5AM 3/27 9-10AM Wet: 27
Span: 30
40.8 0.33 Light (Symptoms appear: 5/16) No risk until first bract leaves have expanded. No risk until pre-bloom period Most recent period shown: 3/21 11PM - Midnight to 3/28/2024 10-11AM
McBain 3/26 5-6AM 3/27 6-7AM Wet: 19
Span: 26
42.8 0.35 No risk until after green tip No risk until first bract leaves have expanded. No risk until pre-bloom period Most recent period shown: 3/21 11PM - Midnight to 3/28/2024 10-11AM