Hello strawberry, blueberry, raspberry and other fruit growers,

SWD has been caught early this year in traps in our region. Here is the map of SWD catches in NY along Vermont's border:

https://fruit.cornell.edu/spottedwing/distribution/

Key SWD Management Tactics:

Reduce habitat for SWD: by mowing around the crop, controlling weeds, and pruning to keep the crop canopy open. SWD prefers cool, moist, shady locations.

Sanitation: keep area free of overripe fruit by harvesting frequently and thoroughly to reduce habitat for build up; collect cull fruit or fruit fallen to the ground; eliminate wild hosts as much as possible.

Exclude SWD: with fine netting applied prior to fruit ripening, seal all edges well. Suppliers include:

https://www.berryprotectionsolutions.com/

https://duboisag.com/us_en/filet-d-exclusion-anti-insectes-proteknet-tricote.html

Monitor SWD population with traps: Use commercially available traps and lures, made by Trece or Scentry. Great Lake IPM is one supplier:

https://www.greatlakesipm.com/product_search/?q=swd

Or, make your own with apple cider vinegar and yeast. See:

https://extension.unh.edu/resource/monitoring-spotted-wing-drosophila-swd-traps

Monitor for SWD presence in ripe fruit: use salt flotation during harvest. This is especially important if you are planning a low- to no-spray approach to managing SWD, so that you know when fruit is infested, see:

https://cpb-us-e1.wpmucdn.com/blogs.cornell.edu/dist/0/7265/files/2017/01/SaltFloatation-2kmt284.pdf

Refrigerate harvested fruit: as soon as possible, to slow down any existing larval development.

Use short residual pesticides (conventional or organic): make frequent, thorough applications, use materials with short harvest intervals, rotate materials from among different mode-of-action groups (IRAC) to avoid the development of resistance in SWD populations. Here is the 2020 list of available materials for berry crops compiled by UConn:

http://ipm.uconn.edu/documents/raw2/1705/2020%20SWD%20Insecticides%20for%20Small%20Fruit.pdf

Additional information resources are linked at:

https://www.uvm.edu/vtvegandberry/SWDInfo.html

Good luck! Vern