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SWD populations are building! The sustained capture in traps checked on on July 15, 2016, in Niagara County found 12 female and 6 male SWD. Berry crops are ripe and ripening. Summer raspberry harvest is nearing completion, fall raspberries are ripening and blueberry harvest is beginning and the crop is ripening.

Traps in Niagara County are being monitored by Liz Tee, technician, and Tess Grasswitz, Extension educator, with the Lake Ontario Fruit Program of Cornell Cooperative Extension.

Find information and resources on the Cornell Fruit Resources Spotted Wing Drosophila website.

Both sites in Orleans County where SWD traps are being monitored had sustained trap catch on July 15, 2016. One site is a raspberry planting with ripe fruit and the other a blueberry planting where fruit are ripening. First find was on July 8, 2016, and this report wasn't posted to the blog (my apologies to the readers for not posting this sooner). First catch in both crops was of a single female SWD. Sustained catch was of two females at each location.

These traps are being monitored by Liz Tee, technician, and Tess Grasswitz, Extension educator, with the Lake Ontario Fruit Program of Cornell Cooperative Extension.

Do keep a close eye on your berry crops!

  1. Monitoring SWD
  2. Managing SWD

Find information on the Cornell Fruit Resources Spotted Wing Drosophila website.

This report came in June 27, 2016—my apologies for not sending it out sooner. Four female SWD were caught, one in each trap at this Albany County summer raspberry site. These traps are being monitored by Annie Mills, technician, and Laura McDermott, Extension educator, with the Eastern NY Commercial Horticulture Program of Cornell Cooperative Extension.

This was the second consecutive week of trap catch indicating sustained trap captures. Once sustained catch was attained, traps at this site were taken down.

Keep a close eye on your berries, plan to protect them from SWD. Practice clean picking, sanitation and post-harvest refrigeration (below 40°F, preferably ~35°F) to keep SWD populations down. Find information on the Cornell Fruit Resources Spotted Wing Drosophila website.

Two female and two male SWD were caught in traps checked on July 12, 2016 that are set in a blueberry planting in Washington County. These traps are being monitored by Annie Mills, technician, and Laura McDermott, Extension educator, with the Eastern NY Commercial Horticulture Program of Cornell Cooperative Extension.

This is the second consecutive week of trap catch indicating sustained trap captures. Once sustained catch is attained, traps in the network are taken down.

A fruit sample was collected from this planting and checked via salt flotation - no eggs or larvae were found in the fruit.

Do keep a close eye on your berry crops, plan to protect them from SWD, and practice clean picking, sanitation and post-harvest refrigeration to keep SWD populations down. Find information on the Cornell Fruit Resources Spotted Wing Drosophila website.

For two weeks in a row, SWD has been caught in traps set in a blackberry planting in Saratoga County. Four male and two female SWD were caught this week in traps checked on July 12, 2016, indicating that populations in this location are building up. These traps are being monitored by Annie Mills, technician, and Laura McDermott, Extension educator, with the Eastern NY Commercial Horticulture Program of Cornell Cooperative Extension.

One female SWD was caught in traps checked on July 12, 2016 in a raspberry planting in Genesee County. The fruit at this location is ripe and ripening. These traps are being monitored by David Russell, Master Gardener, who is working with Jan Beglinger, Agriculture Outreach Coordinator, Genesee County Cornell Cooperative Extension.

Close-up view of the characteristic, serrated ovipositor or egg-laying structure of the female spotted wing Drosophila.
Close-up view of the characteristic, serrated ovipositor or egg-laying structure of the female spotted wing Drosophila.

Four female SWD were caught in traps on July 6, 2016 set in a summer raspberry planting in Clinton County. The summer raspberries at this location are ripe. Traps are being monitored here by Amy Ivy, Extension Educator, and her summer intern Lauren Fessler, with the Eastern NY Commercial Horticulture Program and Clinton County Cornell Cooperative Extension. This is the earliest SWD has been caught in this northeastern corner of NY since SWD was documented in NY in 2011.

Please review:

A single male was initially found on June 29, 2016 in traps set in a blueberry planting in Dutchess County. During the following week, by July 7, one female and four male SWD had been caught at the same location. The blueberries are starting to ripen and it will be essential to protect the fruit from infestation with an insecticide spray program. Traps are being monitored here by Jim O'Connell, Extension Educator with the Eastern NY Commercial Horticulture Program and Ulster County Cornell Cooperative Extension.

One female SWD was caught in traps on July 7, 2016 in Wyoming County set in a raspberry planting. The black and red raspberries at this location are starting to ripen. Traps are being monitored here by Don Gasiewicz, Extension Educator, Wyoming County Cornell Cooperative Extension.

Female SWD on a raspberry.
Female SWD on a raspberry.

Remember that one female SWD can lay about 300 eggs in her lifetime. It is likely that most, if not all, females have mated by now and are ready for laying eggs.

Time to plan to protect your crop!

Want to know what counties we've found SWD in? Check the distribution map on Cornell Fruit Resources, on NYS IPM, or on EDDMapS SWD VMN.

On July 7, 2016, one female SWD was caught in traps set in blackberries in Saratoga County. The blackberries at this location are just starting to color, raspberries are ripe, and June strawberries are done. These traps are being monitored by Annie Mills, technician, and Laura McDermott, Extension Educator, with the Eastern NY Commercial Horticulture Program (ENYCHP), Cornell Cooperative Extension.

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