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Mummy berry infection period has occurred

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Lincoln, Knox and Waldo counties

There are mature cups producing spores in fields in these counties.  There was an infection period in these counties from the evening of Sat. May 3rd through to Sunday May 4th and some fields may have experienced a second infection period from Sunday May 4th afternoon to overnight. Please see table below for infection period start times.  Most plants in these areas now have enough susceptible tissue to need a fungicide application for protection if you use fungicides.  Most fields have flower buds > 40%  by now.

If you have applied fungicide on or after Saturday April 26th, your plants were protected during the infection period this weekend.  If you have not applied fungicides, you have until the evening of Tuesday May 6th in most areas to apply fungicides, (propiconazole or fenbuconazole) to kill any infection.  Other fungicides should be applied as protectants and before infection periods occur.  

 Hancock and Washington counties

There are mature cups in many fields in these areas.  There were conditions for an infection period, but whether you had one in your field depends upon how far along the plants are.  You will need to check your plants to see whether you need to make a fungicide application.  The best way to do this is to collect a minimum of 10 stems across your field and count all of the flower buds to see how many are at F2.  If there are greater than 40% at F2, you probably have enough susceptible tissue to warrant a fungicide application.

 Please see table below for infection period start times.  Most infection periods started in on Sunday May 4th.  .If you have applied fungicide on or after Sunday April 27th, your plants were protected during the infection period this weekend.  If you have not applied fungicides, you have until the evening of Wednesday May 7th in most areas to apply fungicides, (propiconazole or fenbuconazole) to kill any infection.  Other fungicides should be applied as protectants and before infection periods occur. 

 

 

Location 2014 Infection period start  Mummy Berry plots Column1
Dresden Mills May 3 11:20pm No N/A
West Rockport May 3 7:40pm No cups
Appleton May 3 8:20pm Yes cups

Belfast 

May 3 10pm and May 4 3pm yes N/A

Sedgewick

May 4 1:40am and 6:40pm  Yes N/A
North Ellsworth May 3 11:40pm Yes  
Eastbrook/Waltham May 4 10:20pm borderline No cups
Deblois weather station down Yes cups
Cherryfield weather station down Yes ? 

East Machias/Whiting

May 4 10am  yes cups

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