This post contains a summary of trap counts for the week of August 6. 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 crops into day neutral strawberry, raspberry and blueberry and stone fruit (yellow plum, apricot, peach, nectarine, blue plum).  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.  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.

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

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

SWD trapped per trap Counties where SWD was found Crops where SWD was trapped
23F, 6M

6F, 6M

77F, 48M

4F, 2M

Essex Strawberry

Raspberry

Plum

Peach

1F, 4M

4F, 0M

4F, 0M

Elgin Raspberry

Raspberry

Raspberry

12F, 14M

5F,0M

3F, 0M

3F, 1M

Norfolk Wild raspberry

Blueberry

Blueberry

Blueberry

80F, 25M

187F, 34M

1F, 1M

50F, 3M

Norfolk Blueberry

Blueberry

Blueberry

Blueberry

6F,1M

9F, 0M

6F, 1M

Niagara Blueberry

Strawberry

Strawberry

1F, 2M

9F,10M

1F, 1M

Niagara Strawberry

Wild Mulberry

Raspberry

4F, 0M

2F, 0M

0F, 0M

Niagara Raspberry

Apricots

Raspberry

3F, 3M

1F, 2M

7F, 3M

Niagara Apricots

Raspberry

Peach

1F, 1M

2F, 0M

1F, 2M

4F, 2M

9F, 0M

11F, 4M

Niagara Peach

Peach

Peach

Peach

Peach

Peach

7F, 4M

4F, oM

7F, 11M

Niagara Peach

Peach

Plum

4F, 8M

19F, 22M

1F, 2M

Niagara Peach

Sugar plums

Apricots

5F, 3M

5F, 2M

7F, 2M

Niagara Peach

Peach

Peach

0

0

1F, 0M

Niagara Grape (Pinot)

Grape (Pinot)

Grape (Pinot)

0F, oM

3F, 1M

6F, 1M

Durham Blueberry

Blueberry

Blueberry

1F, 4M

5F, 3M

1F, 0M

10F, 1M

Northumberland Wild raspberry

Raspberry

Raspberry

Raspberry

0

8F, 5M

35F, 21M

18F, 6M

Stormont, Dundas & Glengarry Raspberry

Raspberry

Raspberry

Wild host

18F, 5M

14F, 3M

Ottawa/Carleton Wild host

Strawberry

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