One female SWD was caught in a trap set in a blueberry planting in Monroe County. The traps were checked on July 21, 2020. Fruit is ripe and U-pick is open. These traps are being monitored by Janet van Zoeren, Lake Ontario Fruit Program, Cornell Cooperative Extension. This marks the last county in the SWD monitoring network to reach first catch.
The grower at this location has had an active SWD management program, including insecticide protection. The low trap catch numbers at this location likely are associated with an insecticide program being in place in the planting. As the season progresses, SWD will become more numerous and the risk of fruit infestation will become greater. Consider everything you can do to thwart this insect that either will enhance the efficacy of the insecticide management program or will lower the risk of fruit infestation.
Pest Management for SWD includes:
- Mowing – to reduce humidity and habitat for SWD and to increase sun penetration.
- Weed management – to reduce humidity, alternate fruiting hosts and habitat and to increase sun penetration.
- Pruning – to reduce humidity and to increase sun and spray penetration.
- Monitoring – to know if SWD is present and at what level.
- Sanitation – to reduce reproduction harborage and overall SWD population.
- Cold storage – below 37° F, to slow or kill any eggs and larvae in harvested fruit.
Insecticide Quick Guides for NY State are found here (refresh the page to see the latest version):
- For berry crops www.hort.cornell.edu/fruit/pdfs/swd/berry-insecticides.pdf
- For stone fruit and grapes www.hort.cornell.edu/fruit/pdfs/swd/treefruit-grape-insecticides.pdf
For berries -
SWD Management in Blueberry
- Read this blog, Managing SWD in blueberries at blogs.cornell.edu/swd1/2019/08/02/managing-swd-in-blueberries/.
- Spotted Wing Drosophila IPM in Blueberries from the NE IPM Center SWD Working Group, neipmc.org/go/swdpub2
SWD Management in Raspberry and Blackberry
- Read this blog, Managing SWD in raspberries and blackberries at blogs.cornell.edu/swd1/2019/07/17/managing-swd-in-raspberries-blackberries/
- Spotted Wing Drosophila IPM in Raspberries and Blackberries from the NE IPM Center SWD Working Group, neipmc.org/go/swdpub1