5.22.14: Mummy Berry Disease and Botrytis Blossom Blight

Hancock and Washington Counties

Mummy Berry Disease

There was another infection period overnight for mummy berry disease in all fields with weather stations in Hancock and Washington counties.  Most cups will be dying off by now, but if you have a later or wetter field there is a chance you may have had infection period overnight.  Fungicide applications should protect your plants for about seven to ten days after application.   You have until about three days from the start of the latest infection to treat your plants to protect them.

Botrytis Blossom Blight

There were also conditions for a moderate to high risk of Botrytis infection around the weather stations at Sedgwick, North Ellsworth and Eastbrook/Waltham over Tuesday, May 20 and Wednesday, May 21 nights. This does NOT mean these fields will get Botrytis blossom blight. I suggest scouting for Botrytis blossom blight in early blooming clones and dead weeds in those areas to look for the symptoms of the disease.  IF you find the symptoms, then your field may be at risk for Botrytis infection.

Locations Mummy berry Infection period starting Wednesday, May 22
Sedgwick 9:20 a.m.
North Ellsworth 11:00 a.m.
Eastbrook/Waltham 6:40 p.m.
Deblois 9:00 p.m.
Cherryfield 8:40 p.m.
Jonesboro 8:15 p.m.
Wesley 8:40 p.m.
East Machias/Whiting 8:00 p.m.

Any questions please call Seanna Annis at 1.800.897.0757 (Maine only), or email at sannis@maine.edu.