Spotted wing drosophila female with serrated ovipositor

This post contains a summary of trap counts for June 24-July 2, 2019.  The numbers reported are number of SWD per trap.

The regional monitoring program is being conducted in berry and stone fruit crops and grapes in Essex, Chatham-Kent, Elgin, Norfolk, Niagara, Durham, Ottawa/Carleton and Northumberland counties.

The monitoring project is supported by a grant from the Canada Adaptation Program and collaboration among Niagara Peninsula Fruit and Vegetable Growers Association, Ontario Tender Fruit Growers, Eastern Ontario Berry Growers, Grape Growers of Ontario, OMAFRA staff and private consultants.

Traps were first deployed last week (one week earlier in Essex Co) in berry and stone fruit blocks.  We have placed 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 low numbers in traps in Essex, Chatham-Kent, Elgin, Norfolk and Niagara.  Once sustained catch occurs (two weeks in a row with SWD) 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.

SWD Trap catch, June 24-July 1, 2019

County
Crop
Crop stage
# of female SWD
# of male SWD
Essex
GH raspberry
end of harvest
0
0
Field raspberry
early harvest
3
0
Peach
green fruit
0
0
Wild
n/a
4
0
Kent
Wild Host
n/a
2
2
Raspberry
Ripe
14
1
Blueberry
turning colour
0
0
Strawberry
first harvest
0
0
Elgin
Strawberry
harvest
0
0
Strawberry
harvest
1
0
Strawberry
harvest complete
0
0
Wild raspberry
n/a
0
0
Norfolk
Wild raspberry
green fruit
4
0
Blueberry
turning colour
0
0
Blueberry
turning colour
0
0
Blueberry
turning colour
0
0
Norfolk
Wild raspberry
green fruit
8
0
Cherry
turning colour
3
2
Cherry
turning colour
8
0
Cherry
turning colour
4
0
Niagara
Strawberry
1st harvest
0
0
Wild
n/a
0
0
Strawberry
green fruit
0
0
Wild
n/a
0
0
Niagara
Cherry
ripe
0
0
Wild
n/a
2
1
Mulberry
ripe
5
0
Raspberry
green fruit
0
0
Niagara
Cherry
turning colour
0
0
Currant
turning colour
0
0
Goose berry
late bloom
0
0
Raspberry
green fruit
0
0
Niagara
apricot
turning colour
0
0
plum
green fruit
2
2
nectarine
turning colour
0
0
peach
green fruit
0
0
Cherry
ripe
0
0
Niagara
Peach
turning colour
0
0
Peach
turning colour
0
0
Cherry
ripe
0
0
Cherry
turning colour
0
0
Durham
wild
n/a
0
0
not reported
0
0
not reported
0
0
not reported
0
0
Northumberland
wild
n/a
0
0
not reported
0
0
not reported
0
0
not reported
0
0
Ottawa
Strawberry
ripe
0
0
Strawberry
ripe
0
0
Strawberry
ripe
0
0
Wild
n/a
0
0

This project was funded in part through the Canadian Agricultural Partnership (the Partnership), a federal-provincial-territorial initiative. The Agricultural Adaptation Council assists in the delivery of the Partnership in Ontario.

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