Botrytis risk Wed. May 31 to Thurs. June 1

June 1st, 2017 12:42 PM

Mummy berry

Mummy berry symptoms are still appearing in many fields.  IF you have both dead leaves and flowers and see the grey masses of spores at the base of the flowers and leaves you have mummy berry.

Botrytis

I have not heard of any Botrytis reported yet this year. Symptoms include dead flowers with black hairs sticking out from them. If Botrytis was already present in a field, there was some risk of it spreading and infecting new tissue with the rain overnight from Wed. May 31 to Thurs. June 1.    If you are near the end of bloom, I do not think it is cost-effective to apply fungicides.  If you still have a lot of bloom to come AND  you have seen Botrytis in your field, you may want to consider fungicide protection.   The materials are not curative but act as protectants.  If you apply fungicides, do so when the bees will not be in the field to protection your pollination.

Location

Risk of Botrytis infection during last rain period,

Wed. May 31 to Thur. June 1

Waldoboro low
W. Rockport low
Appleton low
Searsport low
Ellsworth high
Eastbrook low
Sedgewick high
Aurora low
Deblois high
Spring Pond high
Jonesboro high
East Machias high
Crawford (Love Lake) moderate

Please see the 2017 Fungicide recommendations  and the 2017 Fungicide chart .

Seanna Annis

Botrytis risk from Thursday May 25 to Friday May 26

May 26th, 2017 5:02 PM

Mummy berry

Mummy berry symptoms have appeared in many growers fields.  You may be finding both dead flowers and leaves on your plants.  If it looks like the flowers did not open before they died, the flowers were probably killed by mummy berry. You can see grey masses of spores at the base of the flowers or dead leaves.

Botrytis

Botrytis is another disease that may kill your flowers.  It is more likely to attack almost open and open flowers.  The flowers will die and have black hairs sticking out from them.  Botrytis typically spreads from dead flowers to other flowers and sometimes leaves.  The presence of Botrytis in a field has been highly variable over the years.  You need to scout to see if you have the disease before applying fungicides to control this disease. There has been enough wetness to cause Botrytis infection at some of our weather stations, but ONLY if the fungus was already present in the field.   If you are in early bloom and have confirmed you have flowers infected with Botrytis, you may want to consider protecting your plants from further Botrytis infection if it looks like we will have substantial amount of rain in your area.  If you are already in late bloom, fungicide sprays are not going to be cost effective. 

Botrytis kills almost open (pink stage)  and open flowers. There may be only a few flowers in a cluster or a few clusters of flowers on a stem that are infected.  The characteristic sign of the fungus is black hairs (often with gray spore masses at their tips) sticking out from the dead flowers.   You many need to use a magnifying glass to the see the hairs on the flowers.  

Location

Risk of Botrytis infection during last rain period,

Thursday May 25 to Friday May 26 at 4pm

Waldoboro high
W. Rockport high
Appleton high
Searsport high
Ellsworth low
Eastbrook high
Sedgewick high
Aurora none
Deblois moderate
Spring Pond low
Jonesboro low
East Machias low
Crawford (Love Lake) low

Please see the 2017 Fungicide recommendations  and the 2017 Fungicide chart .

Seanna Annis

Potential Frost Damage from morning of Sunday May 21

May 23rd, 2017 5:06 PM

We had below freezing (32F) temperatures in some fields in the early morning of Sunday May 21st.  Depending upon the stage of bloom, your plants may have experienced some frost damage.  Below are the temperatures reported at our weather stations.  These are a single point in a field and can only suggest what the conditions may be in the surrounding area.  Lower areas in a field may experience colder temperatures.

  Morning of  Sunday May 21st 
Location

Time of coldest temperature

Coldest temperature

Period below freezing 

Waldoboro 3:40am    37.7 none
W. Rockport 4:20am 40.4 none
Appleton 5:20am 28.1 1am to 6am
Searsport 3am 38.2 none
Ellsworth 5am 34.7 none
Eastbrook 5am 29.7 2am to 6am
Sedgewick 4:20am 38 none
Aurora 4:40am 32.1 borderline 4am to 5am
Deblois 5am 22.9 11:20pm to 6am
Spring Pond 4:40am 28.9 about 2am to 4 to 7am
Jonesboro 4:30am 36 none
East Machias 4:40am 34 none
Crawford (Love Lake) 4:40am 34.7 none

Mummy berry season over in most areas

May 19th, 2017 11:54 AM

Everyone I have heard from reports no viable cups in their fields in the barrens.  In most areas, mummy berry season is over for this year.  If you have symptoms appearing on your plants, some of the spores from those infected tissues will infect healthy flowers and cause mummified fruit (mummy berries) at harvest.  These spores will not kill any more leaf and flowers.   Applying fungicides at this point is not cost effective, since the infection of the plants has already occurred at least 8 to 9 days before, and may  affect pollinator visits.

If you have a later, wetter field, you may still have some cups present.  Please let me know if you are in one of these areas.  We can discuss how I can better serve  you for disease forecasts in the future.

Seanna Annis

 

Time to look for Botrytis blossom blight in your fields

May 15th, 2017 10:29 AM

Botrytis

I have not heard any reports of Botrytis blossom blight this year so far.   Where Botrytis infection is found in a given year is highly variable and dependent upon local inoculum in the field.  In most fields, this varies every year.  Fields with very heavy damage in a crop field one crop cycle may have none or very little infection 2 years later. Whether this fungus is a problem can be detected by looking for infection of early blooming clones from which the fungus can then be spread with wet weather to other clones.    I do not recommend protective fungicide sprays for Botrytis unless you are absolutely sure you have symptoms in your field and a lot of wet weather is forecast for your field during bloom.   Spraying fungicides during bloom should be avoided if at all possible.

Botrytis kills almost open (pink stage)  and open flowers. There may be only a few flowers in a cluster or a few clusters of flowers on a stem that are infected.  The characteristic sign of the fungus is black hairs (often with gray spore masses at their tips) sticking out from the dead flowers. Please see pictures below.  You many need to use a magnifying glass to the see the hairs on the flowers.   Flowers will also die from mummy berry disease, but those dead flowers do not have any hairs and often die before they open.

Seanna Annis

Botrytis blossom blight symptoms on flowers. Notice hairs sticking out of flowers.

Botrytis infected flowers showing black “hairs” with spores

Botrytis infection of flowers showing short "hairs"

Botrytis infection of flowers showing short “hairs”

Mummy berry report for Monday May 15

May 15th, 2017 10:09 AM

Midcoast

The cups should be done in all of the midcoast areas.  It is time to look for Botrytis infections in your blossoms in your earlier blooming clones.

Downeast

Many locations reported a few cups still present on Friday.  By Monday some of those locations reported only dried up cups.  There was weather to cause an infection period from Saturday May 13th or  Sunday May 14th to today.    Whether you had an infection event will depend upon your field and whether it is still had cups.  If in most years your field is typically wet and a later field, you likely had an infection period over this last rain event. I suspect with this dry, warm weather predicted the rest of the week that we are close to the end of the mummy berry season for this year. 

If you can, please check your mummy berry plots at let me know if they are finished.  I would also like to know if your field is close to or in bloom.  Thank you, Seanna

  Infection period  Mummy berry cups
Location Start Sun. May 14  
Waldoboro none dried up
W. Rockport none dried up
Appleton none dried up
Searsport none dried up
Ellsworth 10am cups Friday, dried up Monday
Eastbrook 10:20am cups  Friday
Sedgewick Sat. May 13 8:20pm no plot
Aurora 10:20am cups Friday
Deblois 9:40am cups Friday
Spring Pond 11am cups Friday
Jonesboro 11am cups dried up Monday
East Machias Sat. May 139:40pm probably
Crawford (Love Lake) 12:20pm cups dried up Monday

Applying fungicides

 If you have applied fungicides within the last  7 to 10 days (May 3rd to May 6th and on) before the Saturday May 13/Sunday May 14th start of this infection period, your plants were protected during this last infection period.   If your plants were not protected during this last infection period, I would suggest considering if it is worth applying fungicides at this time for mummy berry control.   We are unlikely to have any more infection periods, and the cups in your field will likely die off in the warm, dry weather predicted for this week.  You are not likely to have had a lot of infection in this last infection period if your plants were close to blooming since that often coincides with the end of the period with mummy berry cups.  

 

Mummy Berry Infection period from Thursday May 11 to Friday May 12

May 12th, 2017 2:14 PM

Midcoast

We  had another infection period overnight from Thursday May 11 to Friday May 12th.  I think this may have caused some infection in some fields in the midcoast region. I suspect the cups will be done this weekend with the warmer weather.

Downeast

These fields also had an infection period.  I do think there will be cups in most fields.  The wet weather coming on Sunday will also probably cause another infection period.

If you can, please check your mummy berry plots at the end of this week and let me know how they are progressing. I am hoping the season is starting to wind down.

  Infection period 
Location Start Thurs. May 11 Stop Fri.  May 12
Waldoboro 6pm cups may be done this far south 8:20am
W. Rockport 5:40pm 8:20am
Appleton 7:20pm 7am
Searsport 7pm 4:40am
Ellsworth 8pm 3:40pm
Eastbrook 7:20pm 6am
Sedgewick 1:20pm 8am
Aurora 4pm 3:20am
Deblois 5:20pm 3:20am
Spring Pond 5pm 6am
Jonesboro none  
East Machias 2:20pm 5:40am
Crawford (Love Lake) 4:40pm 1:20am

Applying fungicides

 If you have applied fungicides within the last  7 to 10 days (May 1st to May 4th and on) before the Thursday May 11 afternoon, your plants were protected during this last infection period from May 11th to 12th.   If you did not have protection during this time period and want to apply fungicides, you have approximately 72 hours from the start of the infection period, so approximately  Sunday May 14th evening, to apply fungicides with some kickback (propiconazole or fenbuconazole) to protect your plants. Please be aware of bees in your field and minimize contact of the bees to fungicides if possible. Other fungicides should be applied as protectants and before infection periods occur.

Seanna Annis

Mummy berry infection period Wed. May 10 to Thurs. May 11

May 11th, 2017 11:15 AM

Midcoast and Downeast

We  have had a mummy berry infection period overnight from Wednesday May 10th to Thursday May 11th in many fields. This event was a bit borderline in some areas.  The wetness on the leaves was just long enough to likely cause infection.   Mature cups producing spores were seen in Appleton and Liberty on Tuesday May 9th.  I suspect with this cool wet weather there are still cups producing spores in the midcoast area.

Downeast, there will still be cups producing spores and if there was enough leaf wetness, there is a good chance there was infection. 

If you can, please check your mummy berry plots at the end of this week and let me know how they are progressing.

  Infection period 
Location Start Wed. May 10 Stop Thurs. May 11
Waldoboro 6:40pm 6:40am
W. Rockport none  
Appleton none  
Searsport 11:20pm 8:20am (gaps in reporting)
Ellsworth 10:20pm 9:20am
Eastbrook 3:20pm 9:40am and on, still wet
Sedgewick 4:20pm 5:40am
Aurora 6:20pm 7:40am
Deblois 6pm 3pm maybe, gaps in reporting
Spring Pond 6pm 7:20am, yes, gaps in reporting
Jonesboro 6:30pm 9:15am
East Machias 4pm 9am, maybe, gaps in reporting
Crawford (Love Lake) 4:40pm 8am

Applying fungicides

 If you have applied fungicides within the last  7 to 10 days (April 30th to May 3rd and on) before the Wed. May 10th evening, your plants were protected during this last infection period from May 10th to 11th.   If you did not have protection during this time period and want to apply fungicides, you have approximately 72 hours from the start of the infection period, so approximately  Saturday May 13th evening, to apply fungicides with some kickback (propiconazole or fenbuconazole) to protect your plants. Please be aware of bees in your field and minimize contact of the bees to fungicides if possible. Other fungicides should be applied as protectants and before infection periods occur.

Seanna Annis

Another mummy berry infection period Tues. May 9 to Wed. May 10

May 10th, 2017 10:34 AM

Midcoast and Downeast

We  had another infection event overnight from Tuesday May 9th to Wednesday May 10th in most areas.  There are still mature cups in some fields in the midcoast area.  I hope they will be done by the end of this week, but it would help if you can check your plots.

Downeast area still has mature cups producing spores.  Most fields probably had an infection period. 

  Infection period 
Location Start Tues. May 9 Stop Wed. May 10
Waldoboro none  
W. Rockport 7pm 8am
Appleton 9pm 7:20am
Searsport 8:20pm 7:20am
Ellsworth 7pm 8am
Eastbrook 4:40pm 8:40pm
Sedgewick 8pm still wet as of 9am
Aurora 6:20pm 6am
Deblois 5:40pm 7am
Spring Pond 7:20pm 8:20am
Jonesboro 4:30pm 9:15am
East Machias 6:40pm 5am and on, missing data
Crawford (Love Lake) 3:40pm 6am

Applying fungicides

 If you have applied fungicides within the last  7 to 10 days (April 29th to May 2nd and on) before the Tuesday May 9th evening, your plants were protected during this last infection period from May 9th to 10th.   If you did not have protection during this time period and want to apply fungicides, you have approximately 72 hours from the start of the infection period, so approximately  Friday May 12th evening, to apply fungicides with some kickback (propiconazole or fenbuconazole) to protect your plants. Please be aware of bees in your field and minimize contact of the bees to fungicides if possible. Other fungicides should be applied as protectants and before infection periods occur.

Seanna Annis

Mummy berry infection period Mon. May 8 to Tues. May 9

May 9th, 2017 12:47 PM

Midcoast

There was another infection event from Monday May 8th overnight to Tuesday May 9th.    There are reports of mature cups but also cups dying off.  I am hoping we are nearing the end of the mummy berry season for this area. Please let me know when your mummy berry cups are dead or dying so I can provide an accurate report.

Downeast – Hancock and Washington Counties

There are active mummy berry cups reported in these regions. Many fields did experience an infection period last night.  Fields that just reached the threshold of having an infection period are labelled borderline. Remember these weather stations are a snapshot in a single location in a single field.  Your field may have experienced longer or shorter periods of leaf wetness than where our weather station in located, but if your field was close to a weather station or between two station that had infection periods, it likely also had an infection period. 

  Infection period 
Location Start Mon. May 8 Stop Tues. May 9
Waldoboro 12:40pm 7:20am
W. Rockport 1:40pm Mon. May 8 11:40pm
Appleton 1:20pm 5:20am
Searsport 6:20pm 5:40am (gaps in record)
Ellsworth NO, short rain showers  
Eastbrook NO, to short by 1 – 2 hr  
Sedgewick 4:40pm 7am
Aurora 5:20pm still raining
Deblois 10:40pm 9am, borderline, cold and gaps in record
Spring Pond 9pm 10am
Jonesboro NO, too short by almost 2 hr  
East Machias 9pm 7am
Crawford (Love Lake) 11pm 7:20am, borderline, gaps in record

Applying fungicides

 If you have applied fungicides within the last  7 to 10 days (April 28th to May 1st and on) before the Monday May 8th afternoon/evening, your plants were protected during the infection periods from May 8 to May 9th.   If you did not have protection during this time period and want to apply fungicides, you have approximately 72 hours from the start of the infection period, so approximately  Thursday May 11th afternoon to evening, to apply fungicides with some kickback (propiconazole or fenbuconazole) to protect your plants. Other fungicides should be applied as protectants and before infection periods occur.

Seanna Annis