This post contains a summary of trap counts for the week of August 13. The traps are shifting from berry crops to later stone fruit and early grape varieties.

Please refer to previous blog posts for counts from earlier in the growing season. The regional monitoring program is being conducted in berry and stone fruit crops and grapes in Essex, Chatham-Kent, Elgin, Norfolk, Niagara, Wellington, Durham, Ottawa/Carleton, Stormont/Glengarry/Dundas and Northumberland counties.

The monitoring project is a collaboration among the Niagara Peninsula Fruit and Vegetable Growers, Ontario Tender Fruit Growers, the Eastern Ontario Berry Growers, OMAFRA staff and private consultants.

Traps are being moved from harvested berry crops into stone fruit (peach, nectarine, blue plum) and early grape varieties (Baco and Pinot noir).  We have placed 3-4 traps with commercial SWD lures at each site.  Use these results in addition to your own monitoring program to determine when SWD is present on your farm. Conduct a salt water test or a plastic baggie test to confirm presence of larvae in fruit.

SWD has been identified in traps in all monitored counties.  There are conflicting reports about the susceptibility of stone fruit and grapes to SWD.  To be on the safe side, when spraying for later season insect pests (Oriental Fruit Moth, Grape Berry Moth), choose a product that has activity against both.This means that growers with ripening crops susceptible to SWD should consider using a product with activity against swd in preharvest sprays.  Check the SWD product registrations on our website. Mako and Malathion have received emergency use registration for this year again and previous blog posts for information on products for managing pre-harvest insects including swd on stone fruit and grapes.

F = female; M = male; PH = post-harvest

SWD trapped per trap Counties where SWD was found Crops where SWD was trapped
11F, 2M

18F, 7M

15F, 7M

4F, 2M

Essex Strawberry (harvest)

Raspberry (harvest)

Plum (colouring)

Peach (harvest)

55F, 16M

6F,2M

3F, 0M

4F, 2M

Norfolk Wild raspberry

Blueberry (harvest)

Blueberry (harvest)

Blueberry (harvest)

25F, 10M

47F, 30M

17F, 9M

10F, 15M

Norfolk Blueberry (harvest)

Blueberry (harvest)

Blueberry (harvest)

Blueberry (harvest)

59F,28M

10F, 2M

8F, 3M

Niagara Blueberry (PH)

Strawberry (ripe)

Strawberry (ripe)

69F, 29M

60F, 49M

51F, 38M

Niagara Strawberry (ripe)

Wild Mulberry

Raspberry (PH)

29F, 15M

70F, 133M

15F, 27M

Niagara Peach (colouring)

Apricot (PH)

Raspberry (PH)

14F, 5M

4F, 3M

5F, 3M

Niagara Peach (PH)

Peach (PH)

Peach (PH)

5F, 0M

4F, 0M

52F, 14M

29F, 15M

Niagara Peach (harvest)

Peach (harvest)

Peach (colouring)

Peach (colouring)

44F, 59M

16F, 1oM

18F, 4M

Niagara Plum (green)

Plum (green)

Plum (green)

16F, 29M

0F, 0M

1F, 0M

Niagara Sugar plum (PH)

Peach (colouring)

Peach (colouring)

8F, 2M Niagara Peach (ripe)
0

0

4F, 11M

Niagara Grape (P noir)

Grape (P noir)

Grape (P noir)

25F, 9M

40F, 13M

27F, 11M

Niagara Grape (Baco)

Grape (Baco)

Grape (Baco)

44F, 15M

16F, 6M

39F, 6M

Niagara Grape (P noir)

Grape (P noir)

Grape (P noir)

12F, 7M

8F, 5M

10F, 7M

Durham Blueberry (wild)

Blueberry (harvest)

Blueberry (harvest)

15F, 54M

10F, 12M

4F, 2M

11F, 15M

Northumberland Wild raspberry

Raspberry (PH)

Raspberry (PH)

Raspberry (PH)

 

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