SWD update

Sunday, August 27, 2017

We are seeing SWD, at several locations throughout NS in wild blueberry fields.

Populations are still quite low (1 -2 flies per trap) and if harvest can be finished in the next week or so risk of a major outbreak is low.

Fields that will be harvested towards the end of the first week of September should be monitored closely and treated as directed by your buyer.

Harvest underway and SWD

Monday, August 14, 2017

Many have started harvest, but it's still pretty early to tell how fields are coming off.

Of note: We are starting to see a scattering of positive SWD adult captures in Northern NS.  The numbers are very low and typically found in field borders close to wild raspberry and other brambles.

If growers are trapping they should be checking the traps every few days, particularly on fields that won't be picked for a couple of weeks.

If you do start to see increasing numbers check the following link for allowable products. http://www.perennia.ca/wp-content/uploads/2015/08/SWD-Factsheet-emergency-reg-July-2017.pdf

Remember!! be very cautious of pre-harvest intervals and check with your buyer for what products work for their markets.

I will update the blog if the numbers start to increase.

SWD trapping, Blueberry Fruit fly and other annoying pests

Wednesday, July 19, 2017

For those who didn't make the field day on the weekend, Dr. Deb Moreau gave an update on SWD trap captures in western NS and the Annapolis valley.  She is seeing some captures in hedgerows around many different berry crops and has begun taking berry samples to see if egg laying has begun.

This is quite early for our region and is a bit concerning for wild blueberry.  We should begin trapping for swd in wild blueberry http://www.perennia.ca/wp-content/uploads/2015/08/Monitoring-for-Spotted-Wing-Drosophila.pdf (click on link for info)

As of yet we have not seen SWD in Northern NS, where most of the wild blueberry is located.  Wild blueberries are not the preferred host of swd, but they can and will use the fruit.  I will be monitoring in several sites and will update if we get any captures.

In the meantime, controlling for Blueberry Fruit fly should be done soon if you have populations in your fields.  Imidan will work well on fruit fly and low levels of swd, if they are there.

Trapping for Blueberry Fruit Fly and Leaf Rust protection in Sprout fields

Tuesday, July 11, 2017

All growers should be putting out their fly traps.  I haven't seen any yet, but fully expect to see some this week.  Remember to wait 3-4 days after first capture before making an application, this allows time for more of the adults to emerge.

You can get traps from the WBPANS office.  Some will be available this weekend at the Maritime Wild Blueberry Field Day at Doug Bragg Enterprises in Collingwood. Saturday 9-3.

Refer to pest guide for products available for Blueberry Fruit Fly http://www.perennia.ca/wp-content/uploads/2015/08/Wild-Blueberry-Pest-Guide-2017.pdf

Remember check with your buyer to see what is allowable for their markets!

Also we are getting close to Leaf Rust control season in Sprout fields.  Leaf Rust typically starts to blow into fields around the 3rd week of July.  An application in Late July should provide protection for almost 2 weeks.  This will reduce leaf drop in September and October and will allow for better sizing of your fruit buds.

Plant development and disease damage

Wednesday, June 7, 2017

Many fields are well along with regard to bloom (even though it has been fairly cold the last few days).

For those that haven't treated for Botrytis yet (later fields) it would be important to consider an application prior to the rainfall event on Friday.

We have been seeing a lot of Monilinia infection around, with some of it being quite severe, below is a picture from late last week that shows some of the damage.

Botrytis Update for Nova Scotia - May 30, 2017

Tuesday, May 30, 2017

It was certainly cold last night but I'm not sure we had a severe enough frost to do any amount of damage last night.   That being said, there could have been some pockets that did receive below zero temperatures.  Generally speaking temperatures need to be below -2 degrees C for an extended period of time to get significant damage to the flower.

Bloom is moving along nicely with good anticipated pollination weather for both today and tomorrow.  The weather forecast is calling for wet conditions Wednesday evening through Thursday. For those who have not treated for Botrytis yet, and are typically prone to botrytis infections, they should strongly consider making an application prior to the coming wet period.

If your bees are in the field, try to make the application when the bees are not flying (ie. in the evening or early morning) to minimize contact with pollinators.

I have yet to see any Botrytis symptoms showing up in the field, but we are still early in bloom.  I have seen a fair amount of Monilina infections, particularly on vegetative buds.

I will continue to make regular updates through the summer on this blog, but will make less regular updates on the blight line (662-4242) as we move through the summer.

Botrytis update for Nova Scotia - May 26th, 2017

Friday, May 26, 2017

So we are getting lots of rain today.  If you have a significant amount of open flower and you have a history of Botrytis you would have needed to apply a control before this wet period.  If you are still early, with <10% open flower, Botrytis infection risk should be low.

However, as we move into early next week and as flowers start to open, I expect Botrytis risk will be high if we get another wet period.  We have had lots of wet conditions that would have enable the disease to start cycling on other plants.

The important thing to remember, any product you are using should be applied before the wet period starts in order to prevent infection.  Most of the newer products ideally need a couple of hours to ensure they are into the leaf, before a rain fall.

I was looking at some fields this week and saw the first signs of Monilinia infection.

It was not very hard to find infection in this field.  It was an early field and to my knowledge had not been sprayed to manage Monilina. When the sun comes out on Saturday afternoon or on Sunday, you should start seeing more and more symptoms if your crop wasn't adequately protected.

Reminder: The WBPANS Twilight meetings are next week

May 29 - Joe Slack's Receiving Shed in Debert - 5:00 pm
May 30 - John Cameron's Receiving Shed in East River St. Mary's - 5:00 pm
June 1st - Art Sargent's Receiving Shed in Parrsboro - 5:00 pm