5.09.18 Mummy Berry Infection period, May 8 to May 9

Midcoast Region

There was a Monilinia infection period in most fields last night, Tuesday, May 8 to Wednesday, May 9. Plants are still going to be susceptible and cups are starting to wind down but may still be present.


There were conditions for a Monilinia infection period last night at all weather stations. Plants are susceptible and there are active cups. Please check your plants to see what stage they are at.

Please let me know if you still have cups. 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
Tuesday, May 8
Waldoboro 7:30 p.m.
West Rockport 9:40 p.m.
Hope No
Searsport 10:40 p.m.
Monteville 8:00 p.m.
Aurora 9:00 p.m.
N. Ellsworth 10:20 p.m.
Sedgwick not working
Eastbrook 7:30 p.m.
Deblois 9:30 p.m.
Montegail 8:20 p.m.
Jonesboro No
Whiting/E. Machias 7:50 p.m.
Cooper 8:00 p.m.
Crawford 9:00 p.m.

If you applied fungicide after Tuesday, May 1 (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 Tuesday night, you would have until approximately  Friday, May 11.

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.