5.08.18 Mummy Berry Infection in Some Areas, May 7 to May 8

Midcoast Region

There was a Monilinia infection period in Waldoboro, but not in West Rockport, Searsport or Hope. Plants are still going to be susceptible and cups are still present. Please see table below.


In some areas, there were conditions for a Monilinia infection period last night. Cups have been reported across the barrens and in Whiting/East Machias. Plants are ready in most areas.  We checked plants in Whiting, Cooper, and Crawford on Monday, May 7 and all were past 40% F2. Please check your plants to see what stage they are at.

Please let me know if you have cups or what stage your plants are.  You can email me, Seanna Annis, at sannis@maine.edu or call me at the blueberry hotline 1.800.897.0757.

Start of infection period
All on
Monday, May 7
Waldoboro 8:50 p.m.
West Rockport No
Hope No
Searsport No
Monteville not working
Aurora 8:30 p.m.
N. Ellsworth No
Sedgwick not working
Eastbrook 9:30 p.m., maybe, almost long enough leaf wetness
Deblois No, temperatures too cold
Montegail No
Jonesboro No
Whiting/E. Machias 7:10 p.m.
Cooper 7:20 p.m.
Crawford 7:30 p.m.

If you applied fungicide after Monday, April 30 (seven days), your plants were protected during this infection period.

If you have not applied a fungicide and want to apply a fungicide with some kickback activity, you have approximately 72 hours from the start of the infection period to do so. With this warm weather, you may want to do this as soon as you can since the fungus is also going to grow faster in the warm weather.  For this potential infection period on Monday night, you would have until approximately  Thursday evening, May 10.

Fungicides with some kickback activity include Propimax, Bumper, Orbit, Tilt for example (containing propiconazole) or Indar (containing fenbuconazole).  Please see the 2018 fungicide recommendations on the Fact Sheet 219 – Disease Control Guide for Wild Blueberries and check with your buyer before applying any fungicides to your crop.