This post contains a summary of trap counts for July 17-25, 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.  This website gives instructions on doing this test.  None of the stone fruit that have been tested have yielded SWD larvae.

SWD has been identified in all monitored areas and counts have increased significantly from last week 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.

CountyCropCrop stageNumber of SWD per trap
June 18-27June 27-July 2July 3-11July 11-17July 17-25
EssexField raspberryharvest03F2F, 2M40F, 5M4F, 2M
Peachgreen fruit04F1F, 1M38F, 10M12F,7M
Wildn/a4F4F5F, 0M86F, 115M
Plumgreen fruit30F, 16M10F, 1M
KentWild Hostn/a04F5F, 0M28F, 39M
Raspberryripe1F14F, 1M51F, 8M3F3F
Blueberryripe0003F, 1M4F, 6M
Strawberryripe1F08F, 3M16F, 5M9F, 5M
ElginWild raspberryn/a001F, 4M21F, 19M
Strawberryharvest20F, 1M37F, 6M
NorfolkWild raspberryn/a04F3F7F, 7M16F, 19M
Blueberryharvest002F23F, 4M45F, 36M
Blueberryharvest003F, 1M4F, 3M35F, 17M
Blueberryharvest0009F50F, 17M
NorfolkWild raspberryn/a08F6F,3M12F, 3MRETIRED
Cherryharvested03F, 2M12F, 2M33F, 1MRETIRED
Cherryharvested2F8F11F6F, 1MRETIRED
Cherryharvested8F4F9F11F, 2MRETIRED
Wildn/a002F, 6M5F, 10M12F, 8M
Wildn/a0005F, 1M14F, 16M
NiagaraWildn/a02F, 1M017F, 7M42F, 6M
Mulberryripe05F4F, 1M19F, 1M26F, 10M
Raspberryripe001F, 1M59F, 16M25F, 19M
Peachturning colour6F
NiagaraCherryharvested002F, 1M3F, 1MRETIRED
Currantripe0002F24F, 3M
Blackberrygreen fruit0003F58F, 19M
Raspberryripe0003F22F, 9M
Nectarineripe7F, 8M
NiagaraApricotturning colour0001F11F, 14M
Plumturning colour2F, 2M1F 2F, 2M61F, 25M
Nectarineturning colour0001F14F, 17M
Peachturning colour000020F, 18M
Cherry harvest0002F, 1M37F, 6M
NiagaraPeachturning colour00002F
Peachturning colour0003F2F, 1M
NiagaraRaspberryripe3F15F, 12M
Cherryripe9F91F, 28M
Cherryripe3F45F, 18M
Durhamwildwild0000not reported
Blueberrynot reported001Fnot reported
Blueberrynot reported001Fnot reported
Blueberrynot reported0000not reported
NorthumberlandWildn/a0008F, M1not reported
Raspberrynot reported001F8F not reported
Raspberrynot reported0001Fnot reported
Strawberrynot reported0003F, 1Mnot reported
Ottawa /CarletonStrawberryharvest0001F, 5M
Strawberryharvest00015F, 13 M
Strawberryharvest001F10F, 15M
Wildn/a001M22F, 56M

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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