Category: 2017 trap network

As of August 7, 2017, all of the 32 SWD trapping sites have caught SWD in 21 counties in New York. To prevent fruit infestation now, susceptible fruit crops need to be protected with an insecticide spray program or have already had exclusion netting in place. Reports are coming in from growers stunned by the level of damage that SWD can cause to their crops, especially blueberries and raspberries. Plantings have been closed.

As of August 10, on average, 200 SWD per trap are being caught in an unsprayed fall raspberry planting at the NYS Agricultural Experiment Station in Geneva, NY. Fruit samples from this planting have, on average, 8 larvae per fruit as found via salt flotation. Each collected fruit yielded a range of 0-8 eggs. These data provide evidence that high pressure from SWD builds during late summer, making it impossible to harvest susceptible fruit that is free of infestation during this time, unless an insecticide program or exclusion netting is in place.

Protect crops from SWD! (SWD hosts)

• late-summer-ripening raspberry, blueberry, blackberry, elderberry
• monitor for infestation in less susceptible fruits: ever-bearing strawberries, thin-skinned grapes, plums and prunes with salt flotation

Management tactics- (SWD management)

• timely insecticide sprays (berries) (tree fruit and grapes)
• rotate active ingredients
• weed management
• canopy management
• clean picking
• remove or spray dropped fruit

Read and follow insecticide label directions.

Find more about SWD on Cornell Fruit Resources SWD pages.

Please join me in thanking the Cornell Cooperative Extension (CCE) specialists who contributed time to the SWD trap network:

• Amy Ivy, CCE Eastern NY Horticulture Program (Clinton and Essex County traps)
• Bernie Armata, CCE Association of Herkimer County (Herkimer County traps)
• Dave Thorp and Jennifer Damon, CCE Association of Livingston County (Livingston County traps)
• Don Gasiewicz, CCE Association of Wyoming County (Wyoming County traps)
• Faruque Zaman, CCE Association of Suffolk County (Suffolk County traps)
• Janice Beglinger, CCE Association of Genesee County (Genesee County traps)
• Jim O’Connell, CCE Association of Ulster County (Ulster County traps)
• Juliet Carroll, Nicole Mattoon and Taylere Herrmann, CCE NYS IPM Program (Cayuga, Onondaga, Schuyler and Wayne County traps)
• Laura McDermott and Annie Mills, CCE Eastern NY Horticulture Program (Albany, Rensselaer, Saratoga and Washington County traps)
• Margaret Ball, CCE Association of Tioga County (Tioga County traps)
• Sharon Bachman, CCE Association of Erie County (Erie County traps)
• Stephanie Mehlenbacher, CCE Association of Steuben County (Steuben County traps)
• Tess Grasswitz, CCE Lake Ontario Fruit Program (Niagara and Orleans traps)

Herkimer County traps caught 10 SWD, 7 males and 3 females, on August 1, 2017. Four traps are being monitored in a blueberry planting, which is still not at peak ripeness. The grower is hoping to get a couple more weeks of picking out of the planting.

Traps in Herkimer County are being monitored by Bernie Armata, Herkimer County Cornell Cooperative Extension.

This is the final SWD monitoring network County to catch SWD. All other sites are at sustained catch. The number of SWD caught at research sites is on the rise. Reports of fruit infestation have come in, especially from fruit plantings not being treated with insecticide. Some direct market growers have closed their plantings due to SWD pressure.

At this point in time, if fruit is ripe, it should be protected with an insecticide program:

• Berry insecticide quick guide
• Stone fruit and grape insecticide quick guide

More on SWD Management and on commercial fruit production is on Cornell Fruit Resources, fruit.cornell.edu.

Sustained catch (two weeks in a row catching SWD) has occurred in several counties: Orleans on June 15 and 22, Niagara on June 28 and 29, Ulster on June 28 and 29, Clinton on July 10, Essex on July 10, and Livingston on July 13.

In Essex County the sustained catch had 144 SWD, caught during the week ending on July 10, 2017.

End of July and early August marks a time frame when SWD numbers in berry crops will increase significantly.

Exponential population growth typically occurs in August. Raspberry fruit may begin to show obvious signs of infestation. Blueberries may also become infested and show signs of fruit infestation.

 

Specific findings:

Orleans County - June 15 at a raspberry site 1 SWD caught in 1 of 2 traps. On July 3, there were 3 SWD caught.

Orleans County - June 22 at a blueberry site 2 SWD caught in 2 of 2 traps. On July 5, there were 10 SWD caught.

Niagara County - June 29 at a raspberry site 8 SWD caught in 2 of 2 traps. On July 5, there were 12 SWD caught.

Niagara County - June 22 at a blueberry site 12 SWD caught in 2 of 2 traps. On July 5, there were 5 SWD caught.

Ulster County - June 28 at a raspberry site 48 SWD caught in 4 of 4 traps.

Ulster County - June 29 at a site with both raspberry and blueberry 17 SWD caught in 4 of 4 traps.

Clinton County - July 10 at a site with both raspberry and blueberry 26 SWD caught in 4 of 4 traps.

Essex County - July 10 at a raspberry site 144 SWD caught in 2 of 2 traps.

Livingston County - July 13 at a site with both raspberry and blueberry 6 SWD caught in 2 of 2 traps.

Information is from Tess Grasswitz, Lake Ontario Fruit Program; Jim O'Connell, Ulster County Cornell Cooperative Extension; Amy Ivy and Annie Mills, Eastern NY Commercial Horticulture Program; and Jennifer Damon and Dave Thorp, Livingston County Cornell Cooperative Extension.

14 SWD were caught on July 10, 2017 in two traps set in a raspberry planting. 7 females were in the trap set within the crop; 4 female and 3 male SWD were caught in the trap set on the edge of the planting.

These traps are being serviced by Jan Beglinger, extension educator, Genesee County Cornell Cooperative Extension. Insect identification is being done by Nicole Mattoon, IPM field technician, and Taylere Herrmann, IPM summer technician, NYS IPM Program.

If your berries are ripe and SWD is being caught in your area, it is time to begin management tactics to protect the crop.

SWD management means practicing IPM using the best combination of:

• trapping to know when SWD has arrived at the fruit planting;
• carefully monitoring the ripening fruit crop;
• sanitation — immediate disposal of over-ripe or infested fruit;
• sanitation — clean harvesting fruit;
• pruning and weed management to maintain good air and sunlight penetration into the planting;
• protecting the crop with insecticide treatments or exclusion netting;
• refrigeration of harvested fruit.

3 SWD were caught in traps checked on July 6, 2017 — 2 female and 1 male were found in the trap set on the edge of the small blueberry planting at this location.

Practice these IPM tactics for managing SWD:

• trapping to know when SWD has arrived at the fruit planting;
• carefully monitoring the ripening fruit crop — consider salt flotation assays;
• sanitation — immediate disposal of over-ripe or infested fruit;
• sanitation — clean harvesting fruit;
• pruning and weed management to maintain good air and sunlight penetration into the planting;
• protecting the crop with insecticide treatments or exclusion netting;
• refrigeration of harvested fruit.

These traps are being serviced by Jennifer Damon for Dave Thorp, extension educator, Livingston County Cornell Cooperative Extension. Nicole Mattoon, IPM field technician, and Taylere Herrmann, IPM summer technician, with the NYS IPM Program are identifying the insects caught in the traps.

First catch in a raspberry planting on July 6, 2017 of 3 female SWD in a trap within the crop and 1 female in a trap set on the edge of the crop.

Sustained catch on July 12, 2017 of 18 SWD, 8 females and 10 males. Within the crop the trap caught 7 male and 4 female SWD. On the edge of the crop the trap caught 3 male and 4 female SWD.

These traps are being monitored by Don Gasiewicz, extension educator, Wyoming County Cornell Cooperative Extension.

Confirmed sustained catch occurred in Wayne County on June 28, 2017 in ripe summer raspberries (2 females caught in two of four traps) and on July 11 in a blueberry planting (1 female SWD in one of four traps).

These traps are being monitored by Nicole Mattoon, IPM field technician, and Taylere Herrmann, IPM summer technician, with my fruit IPM program.

If your berries are ripe and SWD is being caught in your area, it may be time to start insecticide treatments to protect the crop.

Keep in mind the IPM tactics for managing SWD:

• trapping to know when SWD has arrived at the fruit planting;
• carefully monitoring the ripening fruit crop;
• sanitation — immediate disposal of over-ripe or infested fruit;
• sanitation — clean harvesting fruit;
• pruning and weed management to maintain good air and sunlight penetration into the planting;
• protecting the crop with insecticide treatments or exclusion netting;
• refrigeration of harvested fruit.

5 female SWD were caught on July 3, 2017 in traps set within a planting of ripe and ripening summer raspberries. These traps are being monitored by Amy Ivy, extension educator, Eastern NY Commercial Horticulture Program (ENYCHP), assisted by Anne Mills, field technician with ENYCHP.

If your berries are ripe and SWD is being caught in your area, it is time to begin management tactics to protect the crop.

SWD was confirmed on July 3, 2017 from two sites in Clinton County. 2 female SWD were caught in traps on the crop edge of a summer raspberry planting where fruit is ripe. 3 female SWD were caught in a blueberry planting where fruit are still green, without blush, 2 in traps set within the crop and 1 in the traps set on the edge of  the crop.

These traps are being monitored by Amy Ivy, extension educator, Eastern NY Commercial Horticulture Program (ENYCHP), assisted by Anne Mills, field technician with ENYCHP.

If your berries are ripe and SWD is being caught in your area, it is time to begin management tactics to protect the crop.

At a second site in Wayne County, 1 female SWD was caught on July 5, 2017 in four traps set in a blueberry planting. These traps are being monitored by Nicole Mattoon, IPM field technician, and Taylere Herrmann, IPM summer technician, with my fruit IPM program in the NYS IPM Program.

If your berries are ripe and SWD is being caught in your area, it is time to begin management tactics to protect the crop.