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

CountyCropCrop stage# of female SWD# of male SWD
EssexGH raspberryend of harvest00
Field raspberryearly harvest 30
Peachgreen fruit00
Wildn/a40
KentWild Hostn/a22
RaspberryRipe 141
Blueberryturning colour00
Strawberryfirst harvest00
ElginStrawberryharvest00
Strawberryharvest10
Strawberryharvest complete00
Wild raspberryn/a00
NorfolkWild raspberrygreen fruit40
Blueberryturning colour00
Blueberryturning colour00
Blueberryturning colour00
NorfolkWild raspberrygreen fruit80
Cherryturning colour32
Cherryturning colour80
Cherryturning colour40
NiagaraStrawberry1st harvest00
Wildn/a00
Strawberrygreen fruit00
Wildn/a00
NiagaraCherryripe00
Wildn/a21
Mulberryripe50
Raspberrygreen fruit00
NiagaraCherryturning colour00
Currantturning colour00
Goose berrylate bloom00
Raspberrygreen fruit00
Niagaraapricotturning colour00
plumgreen fruit22
nectarineturning colour00
peachgreen fruit00
Cherry ripe00
NiagaraPeachturning colour00
Peachturning colour00
Cherry ripe00
Cherry turning colour00
Durhamwildn/a00
not reported00
not reported00
not reported00
Northumberlandwildn/a00
not reported00
not reported00
not reported00
OttawaStrawberryripe00
Strawberryripe00
Strawberryripe00
Wildn/a00

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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