Mummy berry infections on Mon. and Tues. May 12 and 13

May 14th, 2014 8:26 AM

Knox, Lincoln, and Waldo counties

I think we are getting close to the end of the infection periods in these areas.  There are a few drying up cups being reported but no new ones coming along.  There were infection periods overnight from Monday May 12th to Tuesday May 13th at our Appleton weather station, staring at 6:20pm on Monday May 12 and in Belfast on Mon. May 12th at 9pm.   There were infection periods reported farther south at our weather stations in West Rockport and Dresden Mills.

In those areas where there was an infection period, if you have applied fungicide on or after Monday, May 5th your plants were protected during the infection period over Monday night.  If you have not applied fungicides, you have until the evening of Thursday May 15th, depending upon the rain in your area,  in most areas to apply fungicides (propiconazole or fenbuconazole) to kill any infection.  If you would be applying a second application of propiconazole, it would be a good idea to switch to a different fungicide with a different mode of action to help prevent resistance to propiconazole developing in your field (Please see the 2014 fungicide chart).   Other fungicides should be applied as protectants and before infection periods occur. 

Hancock and Washington counties

There are still cups producing spores in the barrens.  Three of our weather stations reported borderline infection periods, which means the length of leaf wetness reported at the station was 1/2 hour short of what is required for an infection period. Since the length of rain events vary by location, some areas may have experienced an infection period from Sunday night to Monday.  We did not see any infection periods detected at Sedgewick, North Ellsworth, or Eastbrook/Waltham stations.

Location 2014 Infection period start 
Deblois weather station down
Cherryfield Mon. May 12 1am 
Jonesboro Mon. May 12 1am 
Wesley  Mon. May 12 midnight
East Machias/Whiting None

In those areas where there was an infection period, if you have applied fungicide on or after Sunday, May 4th your plants were protected during the infection period over Monday night.  If you have not applied fungicides, you have until the evening of Wednesday May 14th, depending upon the rain in your area,  in most areas to apply fungicides (propiconazole or fenbuconazole) to kill any infection.  If you would be applying a second application of propiconazole, it would be a good idea to switch to a different fungicide with a different mode of action to help prevent resistance to propiconazole developing in your field (Please see the 2014 fungicide chart).   Other fungicides should be applied as protectants and before infection periods occur.

 I apologize for getting this information out so late. If you have any questions, please contact Seanna Annis at sannis@maine.edu.

 

Mummy berry infection periods Sat May 10th

May 10th, 2014 9:43 PM

At all of the weather station conditions for a mummy berry fungus infection period occurred from Friday May 9th or Saturday May 10.  Please see the table below to see the approximate time when the  infection period started in your area.  Most growers in Knox, Lincoln and Waldo counties have plants that are susceptible and there are mummy berry cups producing spores in these areas.   In Hancock and Washington counties, there are mummy berry cups in the fields producing spores but  how far along the blueberry plants have opened vary by field. Growers will need to check their own fields to determine if greater than 40% of flower buds are at F2 and whether they need to spray.

In those areas where there was an infection period, if you have applied fungicide on or after Saturday, May 3rd your plants were protected during the infection period this weekend.  If you have not applied fungicides, you have until the evening of Tuesday May 13th, depending upon the rain in your area,  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 
Dresden Mills Sat. May 10 12:40am
West Rockport Sat. May 10 12:40am
Appleton Sat. May 10 1:20am
Belfast  Fri. May 9 6:20pm
Sedgewick Sat. May 10 7am
North Ellsworth Sat. May 10 1:40am
Eastbrook/Waltham Sat. May 10 7am borderline
Deblois weather station down
Cherryfield Sat. May 10 8:20am
Jonesboro Sat. May 10 8:15am 
East Machias/Whiting Fri. May 9 7:40pm and Sat. May 10 8:40am
Wesley  Sat. May 10 8am

Blueberry Weather Stations 2014

May 9th, 2014 12:28 PM
I have 10 weather stations deployed so far.  I have had problems with a few stations and hope to get 4 more either back online and deployed shortly.

The link below takes you to the weather station page with the stations we have out this year. Paste this into your web browser http://www.grovision.com/AgriNET/ComServer/UofMaine/DashboardFrameset.htm

OR click on the link below.

The locations are

Dresden Mills

West Rockport

Appleton

Belfast

Sedgewick

North Ellsworth
Eastbrook/Waltham

Deblois (station down right now)

Columbia

Wesley

East Machias/Whiting

If you have any questions please contact Seanna Annis.

Telephone: 1- 800-897-0757 (Maine only) or  207-581-2621, Email: sannis@maine.edu.

Mummy berry infection period in Appleton and West Rockport

May 7th, 2014 12:46 PM

Lincoln, Knox and Waldo counties

Conditions for a mummy berry infection period occurred at the Appleton  from Monday May 5th through to Tuesday May 6th  and at the West Rockport station from Tuesday at 1:20pm to Wednesday morning.  Infection periods were not seen in Dresden Mills or Belfast weather stations. The temperatures were too cool or the rain too sporadic for an infection period. Mature cups producing spores are found in fields in these counties. 

In those areas where there was an infection period, if you have applied fungicide on or after Tuesday April 29th, your plants were protected during the infection period this weekend.  If you have not applied fungicides, you have until the evening of Thursday May 8th to Friday May 9th, depending upon the rain in your area,  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

No infection periods were produced from Monday through Wednesday afternoon.  Flower bud development was examined at two sites on Tuesday May 7th and found to be 18% of flower buds at F2 in a field near Deblois, and 20% of flower buds at F2 in a field in Township 19.

 

Mummy berry infection period has occurred

May 5th, 2014 10:21 AM

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

Mummy berry season has started

May 2nd, 2014 1:43 PM

Lincoln, Knox, Waldo counties

Cups have been found in West Rockport, Liberty and Appleton this week.  The fungus was likely producing spores in fields in these areas.  We did have long enough leaf wetness for infection IF your plants were far enough along.  Reports vary by the area of whether or not the plants were at 40% of the flower buds at F2 (crown stage).  Please consider your own field development for whether you need to apply fungicides.  I expect with the warm weather today, Friday, and tomorrow, most fields will be at 40% F2 flower buds  or higher on Sunday when the next rain period is expected.

Most infection periods in these areas started late evening on Thursday May 1st (see table below).  For this last infection period, you have until Saturday evening May 3rd to apply fungicides (propiconazole or fenbuconazole) to kill off any infection that occurred in the last infection period.  

If you are using Proline or other fungicides, you may want to apply them BEFORE the next infection period.  Many of these fungicides do not have much kickback activity, so you need to apply them as protectants.   Fungicides containing propiconazole and fenbuconazole, of course, can also be applied as protectants if that is more convenient for timing applications. 

Hancock and Washington counties

Cups have been found in Eastbrook/Waltham, Deblois, the barrens and Wesley.   There was leaf wetness on Thursday night through Friday but most growers report their plants were not ready yet.  Many growers said their fields were closer to F1 than F2 with the cold weather.

I expect with the warm weather today, Friday, and tomorrow, more fields will be at 40% F2 flower buds on Sunday when the next rain period is expected.

 

Location 2014 Start of wetness period MB Plot Fungal Development
Dresden Mills Thurs. 9:20pm No N/A
West Rockport Wed. 9:40pm Yes cups
Appleton Wed. 5:20pm Yes cups
Belfast  Wed. 9:20pm,  Thurs. 9pm  No N/A
Sedgewick Wed 10:20pm No N/A
North Ellsworth Wed. 10:40pm Yes pinhead
Eastbrook/Waltham Wed. 11:20pm yes cup
Deblois

Thurs. midnight,

station down

yes pinheads, cups
Cherryfield Thurs. midnight on Yes pinheads
East Machias/Whiting Wed. 11:40pm Yes unknown

If you have any questions please contact Seanna Annis. Telephone: 1- 800-897-0757 (Maine only) or  207-581-2621, Email: sannis@maine.edu.

Mummy berry cups have started

April 27th, 2014 9:23 PM

Lowbush Blueberry flower bud stages: F0 - buds covered by scales; F1 - scales starting to open, green shows; F2 - Crown Stage.Bud scales separated. Tips of buds form a crown shape. After this stage, flower and leaf buds are susceptible. Buds at F0 and F1 are not susceptible.Knox, Lincoln, Waldo counties

Mummy berry cups have been found by growers in their fields in West Rockport and Liberty.  Numerous cups and pinheads were seen in plots this weekend by these growers.    The growers also report the plants in their fields were not open enough to be susceptible with the rain this weekend.  

Plants will have enough susceptible tissue to become infected when more than 40% of their flower buds are at the F2 stage of development (the crown stage).  Before this point in development the plant tissue is protected by the bud scales from fungal infection.  Fungicides will also not be able to penetrate the bud scales very well.    To check your plants, look at a random sample of at least 20 stems across your field (from different clones) and count the number the stems with F2 buds. 

If you have a mummy berry plot, I would like to hear from you when you see cups starting to appear and when they end. 

If you have any questions please contact Seanna Annis. Telephone: 1- 800-897-0757 (Maine only) or  207-581-2621, Email: sannis@maine.edu.

 

Mummy Berry Season is getting close

April 20th, 2014 2:21 PM

With the warmer weather, flower buds are just starting to open up in the south and the mummy berry season is approaching.  If you have a mummy berry patch in Knox, Lincoln or Waldo counties, now is the time to start monitoring it.

Monitor your plants by checking the flower buds.  Once you have 40% or over of your flower buds at the F2 stage (crown stage) then you have enough plant tissue that an infection of the mummy berry fungus could be harmful.

I am looking for helpful growers to tell me how their plants are progressing and if they have a mummy berry patch, how that is doing as well.   If you do check your plants or mummy berry patch, please give me a call  or send me an email on how they are progressing. 

We have weather stations up in Dresden Mills, West Rockport, Appleton, and Belfast so far.  We hope to have the rest in place in the next two weeks.

If you wish to be receive these posts via email and are not currently doing so, please send your address to me at sannis@maine.edu.

Seanna Annis, 1- 800-897-0757 (Maine only) or  207-581-2621. 

2014 Maine Pollination Workshops

April 11th, 2014 12:39 PM

2014 Maine Pollination Workshops

During the spring and summer of 2014, researchers from the University of Maine are hosting a series of free pollination workshops for fruit and vegetable growers. These workshops are supported by a grant from the Northeast Sustainable Agriculture Research and Education (SARE) program. The workshops will provide instruction on assessing bees’ impact on fruit set and identifying wild bees. They will also include information on strategies to improve habitat for wild bees. For more information, contact Kourtney Collum at kourtney.collum@maine.edu. In case of inclement weather, visit the following website for more information:  http://mainepollinationworkshops.weebly.com/. No preregistration is required for these workshops.

 

Pollination Workshop for Apple Growers

Wednesday, May 21, 2014 from 1:00 PM to 3:00 PM – NEW DATE!
Rain date:  Thursday, May 22, 2014 from 1:00 PM to 3:00 PM
Highmoor Farm, UMaine Experiment Station, 52 U.S. Route 202, Monmouth, Maine 04259

This workshop is designed specifically for apple growers.

 

Pollination Workshop for Lowbush Blueberry Growers

Tuesday, May 27, 2014 from 4:00 PM to 6:00 PM
Rain date:  Tuesday, June 3, 2014 from 4:00 PM to 6:00 PM
Seven Tree Farm, Route 235, 2740 Western Road, Warren, Maine 04864

This workshop is designed specifically for lowbush blueberry growers.

 

Pollination Workshop II for Lowbush Blueberry Growers

Wednesday, May 28, 2014 from 4:00 PM to 6:00 PM
Rain date:  Wednesday, June 4, 2014 from 4:00 PM to 6:00 PM
Blueberry Hill Farm, UMaine Experiment Station, 1643 Route 1, Jonesboro, Maine 04648

This workshop is designed specifically for lowbush blueberry growers.

 

Pollination Workshop for Squash and Pumpkin Growers

Tuesday, July 29, 2014 from 4:00 PM to 6:00 PM - NEW DATE!
Highmoor Farm, UMaine Experiment Station, 52 U.S. Route 202, Monmouth, Maine 04259

This workshop is designed specifically for squash and pumpkin growers.

BDN Advances Cooperative Extension Blueberry Growers Meetings

February 25th, 2014 3:26 PM

Spring meetings and training offered by the University of Maine Cooperative Extension were mentioned in the Bangor Daily News article “Maine wild blueberry industry may benefit from farm bill pilot program.” Blueberry growers will gather in March, 2014 for meetings planned by the UMaine Cooperative Extension in Waldoboro, Ellsworth and Machias. The meetings will include briefings on pollination, weeds, fertilizers, regulations, diseases and pests. The article also stated the Cooperative Extension and Maine Board of Pesticides Control will conduct training in Machias to prepare growers for the private pesticide applicator core exam and the blueberry commodity exam. Both exams will be administered after the training sessions.