Spotted Wing Drosophila Update, July 3-July 11, 2019

This post contains a summary of trap counts for July 3-11, 2019.  The numbers reported are number of Spotted Wing Drosophila (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 in early June 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  Essex, Chatam-Kent, Elgin, Norfolk, Niagara and Northumberland.  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.

 

F = female; M = male;

County	Crop	Crop stage	Number of SWD per trap
			June 18-June 27	June 27-July 2	July 3-11
Essex	GH raspberry	harvest complete	4F	0	0
	Field raspberry	early harvest	0	3F	2F, 2M
	Peach	green fruit	0	4F	1F, 1M
	Wild	n/a	4F	4F	5F, 0M
Kent	Wild Host	n/a	0	4F	5F, 0M
	Raspberry	ripe	1F	14F, 1M	51F, 8M
	Blueberry	ripe	0	0	0
	Strawberry	ripe	1F	0	8F, 3M
Elgin	Strawberry		0	0	not reported
	Strawberry	harvest	0	1F	1F
	Strawberry		0	0	not reported
	Wild raspberry	n/a	0	0	1F, 4M
Norfolk	Wild raspberry	n/a	0	4F	3F
	Blueberry	ripe	0	0	2F
	Blueberry	ripe	0	0	3F, 1M
	Blueberry	ripe	0	0	0
Norfolk	Wild raspberry	turning colour	0	8F	6F,3M
	Cherry	1st harvest	0	3F, 2M	12F, 2M
	Cherry	1st harvest	2F	8F	11F
	Cherry	1st harvest	8F	4F	9F
Niagara	Strawberry	ripe	not reported	0	0
	Wild	n/a	0	0	2F, 6M
	Strawberry	ripe	0	0	0
	Wild	n/a	0	0	0
Niagara	Cherry	turning colour	0	0	3M, 3F
	Wild	n/a	0	2F, 1M	0
	Mulberry	ripe	0	5F	4F, 1M
	Raspberry	turning colour	0	0	1F, 1M
Niagara	Cherry	ripe	0	0	2F, 1M
	Currant	turning color	0	0	0
	Goose berry	green fruit	0	0	0
	Raspberry	ripe	0	0	0
Niagara	apricot	pit hardening	0	0	0
	plum	pit hardening	not reported	2F, 2M	1F
	nectarine	turning colour	0	0	0
	peach	turning colour	0	0	0
	Cherry	turning colour	0	0	0
Niagara	Peach	turning colour	0	0	0
	Peach	turning colour	0	0	0
	Cherry	ripe	0	0	1F
	Cherry	ripe	0	0	1F
Durham	wild	n/a	0	0	0
	Blueberry	green fruit	not reported	0	0
	Blueberry	green fruit	not reported	0	0
	Blueberry	green fruit	0	0	0
Northumberland	wild	n/a	0	0	0
	Raspberry	green fruit	0	0	1F
	Raspberry	green fruit	0	0	0
	Strawberry	harvest	0	0	0
Ottawa	Strawberry	ripe	not reported	0	0
	Strawberry	ripe	not reported	0	0
	Strawberry	ripe	not reported	0	0
	Wild	n/a	not reported	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. The Agricultural Adaptation Council assists in the delivery of the Partnership in Ontario.