7th Monilinia Update for Nova Scotia

Friday, May 17, 2019

Almost all areas in mainland Nova Scotia are under risk for infection from monilinia. With the exception of a few very late fields, fields are at or beyond the 40-50% F2 V2 stage.  There is a forecasted rainfall event overnight tonight into mid day on Saturday.  There is also an expected rainfall event overnight Sunday into Monday, possibly continuing on into Tuesday.  This will likely mean several infection periods in most regions, especially as temperatures start to go up..

If an application has been made this week, it will provide 7-10 days of protection for the buds that were open at the time of application.

If an applications are delayed until Wednesday of next week, it is unrealistic to expect back action that extends back to the weekend, to cover off the infection periods.

This is a critical time for Monilinia Risk in Nova Scotia.

Also of note, weeds are finally starting to move, the cold soil temperatures have slowed weed growth and plant development.  As of yet, we have not seen any blueberry plants emerge in sprout fields in central Nova Scotia.

The next update will be late in the day on Tuesday, May 21st.

6th Monilinia Update for Nova Scotia

Tuesday, May 14, 2019

We are certainly looking at an infection period from Tuesday mid-day through late in the day on Wednesday.  There also appears to be another wet period approaching on Saturday, which could be an infection period.

Most fields, except traditionally later fields (ie. high fields, cape breton and areas towards advocate) are at or beyond the critical 40-50% F2/V2 stage.

Crop development has slowed considerably with the cold temperatures and cold soils.  Grasses are just starting to move and I have yet to see a blueberry plant begin to push through the ground on any sprout fields.

Areas reporting on fruit bud development:

Halfway river - 26-67% F2
Airport Field Parrsboro - 43% F2
Parrsboro shore/advocate - 23-25% F2
Springhill - 36-49% F2
Amherst - 49-59% F2

Central Colchester and Halifax counties are beyond the 40-50% stage with the exception of a few very late fields.

We are certainly in the heart of Monilinia season and controls should be considered if your field is at the right stage.

The next update will be late in the day on Friday, May 17th.

5th Monilinia Update for Nova Scotia

Friday, May 10, 2019

We are fully expecting an infection period Friday evening into Saturday with 10-15 mm expected.  There is also another forecasted weather event coming on Tuesday.

Many traditionally early fields in central NS are approaching or are at the 40-50% F2 stage and control measure should be considered.

This stem taken from a field in Mt. Thom this afternoon, has five fruit buds all at or beyond the F2 stage.  This field had 40% of it's buds at the F2 stage. In a normal year is considered at later field.

We are still seeing field development that does not make sense according to traditional field development progression.  Winter damaged fields are still lagging behind traditionally later fields.

Here are a list of reporting sites from this week.

Musquodoboit - 55% F2

Mt. Thom - 40% F2

Oxford - 33-63% F2

Williamsdale - 25-52% F2

Farmington - 15-22% F2

Pigeon Hill - 14.9-25% F2

Advocate - 3% F2

Parrsboro Airport - 15% F2

The next update will be late in the day on Tuesday, May 14th.

4th Monilinia Update for Nova Scotia

Tuesday, May 7, 2019

If you are above the 40-50% V2 F2 bud stage, tonight will likely be an infection period.

However, most fields are not far enough along to warrant an application.

Many fields could be ready as the next rainfall event approaches on Friday into Saturday.

Proline and Propiconazole based products (Tilt, Topas, Jade, Bumper etc.) are the main products of choice for controlling Monilinia.  Contact your buyer to see which products are allowable for their markets.

Propiconazole based products do have 2-3 days of back action from the start of an infection period. It is unclear how much back action Proline gives, but it is believed there is some.

Below is an update of fields and regions.

Stewiacke - 31% F2
Middle Musquodoboit - 10-22% F2
Benvie Hill - 18% F2

Mt. Thom - 17% F2

Amherst - 26-30% F2
Athol - 24-28% F2
Springhill - 17-20% F2
Mapleton - 11-15% F2
Oxford - 28-52% F2
Farmington - 14-18% F2
Westchester - 28-31% F2

Lakelands - 30% F2

We are rapidly approach the critical development period in most areas including areas east of Mt. Thom and in coastal areas.  All farmers should be looking at their fields to determine bud development.

The next update will be late in the day on Friday, May 10th.

3rd Monilinia Update for Nova Scotia

Friday, May 3, 2019

We are seeing very variable field development across the region.  Generally speaking, fields that have had severe winter injury appear to be developing slower than fields that escaped without a lot of damage. It is important to check your fields now, to not only determine the severity of injury on your fields but to determine how developed your fruit and vegetative buds are.

As of yesterday, our first active apothecia cup was noticed.  So if there is a wet period of significant length spores will be released.  However, it does not make economic sense to treat fields that are less than the 40% F2 V2 stages.

Below is a report of fields and regions across Nova Scotia:

East Kemp - 33% F2
Queen's County - 40% F2

Musquodoboit - 8-20% F2
Benvie Hill - 14-22% F2
Stewart Hill - 16% F2

Camden - 17% F2

Oxford (wood field) - 22.5% F2
Mt. Pleasant (Smith) - 21% F2
Amherst - 11-14% F2
Athol - 11.8 - 20.5% F2
South Hampton - 14-20% F2
Rose Corner - 17.8% F2
Westchester - 10-20.5% F2

Average bud counts are lower than in previous years, with numbers of viable buds ranging from 2-6 in many fields.

We are seeing some winter damage in almost every field, but damage is quite variable from field to field. A note to consider, a field with good plant density and an average bud count of 4 can still get a good yield, if disease protection and pollination are looked after.

There is a forecasted rainfall event for Friday night and through noon on Saturday, however, most fields are not at a stage that would warrant a treatment this weekend.

There could be a rainfall event on Tuesday, given the forecasted temperatures, plant development could push many areas beyond the 40% F2 stage by then.  I expect we will need to begin treating for monilinia next week.

The next update will be late in the afternoon on Tuesday, May 7th. 

Agweather Atlantic is Back-up and Running!!

Thursday, May 2, 2019

Click on the link below to access Ag related weather.

Agweather Atlantic

It is not a complete network of weather stations, but it does provide good data on weather stations in some prime blueberry country.

West Brook
Upper Stewiacke

2nd Monilinia Update for 2019

Tuesday, April 30, 2019

We are seeing variable fruit bud development across the region.  It is important that growers check their own fields soon to determine the stage of their crop fields.

When looking at fruit buds do not count obviously dead fruit buds. The picture below shows a stem with 5 fruit buds, but the top three are not viable. Only count the viable buds to determine what percentage is at the F2 stage.
Below is a report of fields and areas reporting fruit bud development

Lower Musquodoboit valley - 2-18% F2
Springhill - 2.5% F2
South Hampton - 4.8 - 8.5% F2
Amherst - 8.5 - 17% F2
Oxford - 10-18% F2
Rodney - 2% F2
Mt. Thom - 8% F2

The forecast for the next few days is sunny but cool, with a chance of showers on Saturday.  After that temperatures look to rise and development should move rapidly.

Risk of infection is still low as of today in most regions.

The next update will be late in the afternoon on Friday May 5th.