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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