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SWD first find in Ulster County

A single female SWD was caught in one of four traps set in a fall raspberry planting in Ulster County during the week ending June 21, 2018. This trap was set on the edge of the planting next to a blueberry field. A second site in Ulster County with four traps caught zero SWD this week. Jim O’Connell, Ulster County Cornell Cooperative Extension, is monitoring these traps.

Scentry SWD trap set in a tart cherry. Fruit are coloring and will soon be ripe for harvest.

Summer raspberries, early season blueberries, sweet and tart cherries are starting to ripen across New York. Depending on variety and location, some sweet cherry blocks are ripe.

As fruit ripens and SWD shows up, it’s time to prepare to protect fruit with the best of cultural practices and an insecticide program.

Once fruit is ripe, begin an insecticide program to protect fruit from infestation. More on management tactics can be found on the Cornell Fruit Resources SWD Management page.

SWD first find in Columbia and Schuyler Counties

One female SWD was caught in a trap set in a sweet cherry orchard in Columbia County during the week ending June 18, 2018. Three other traps at that orchard, two on the orchard edge and another within the orchard, caught zero SWD. These traps are being monitored by technician Natasha Field, working with Laura McDermott and the Eastern NY Commercial Horticulture Program. This cherry block is an early variety and is starting to color.

Two female SWD were caught in traps set in a raspberry planting in Schuyler County during the week ending June 18, 2018. Two other traps set on the edge of the planting and four other traps in an adjacent blueberry planting caught zero SWD. These traps are being monitored by Nicole Mattoon and Ryan Parker, technicians working with Juliet Carroll in the NYS IPM Program. Raspberry fruit are still green at this location.

Distribution of SWD trap catch in the Cornell Cooperative Extension SWD trap network as of June 18, 2018.

SWD numbers are still low to non-existent across the Cornell Cooperative Extension SWD trap network trapping locations. Fruit is still, for the most part, immature. However, June strawberry season is underway and a few ripe raspberries were seen in a planting of selections from Courtney Weber’s small fruit breeding program, Horticulture, Cornell University.

Once fruit is ripe, it will be important to put a spray program into place. Recent research in Washington State on modeling population growth of SWD suggests that spraying with the most efficacious material early on will knock down the population, slow population growth over time, and make for easier control, possibly with fewer sprays (thus less costly) as the season progresses.

As with any management program, the more cultural tactics that are in place to thwart SWD, the better:

  • clean harvesting
  • removing overripe and damaged fruit
  • mowing and weed control
  • pruned and open canopies
  • judicious irrigation; no leaking irrigation equipment
  • postharvest cooling and refrigeration at around 32° to 33° F

More on SWD management can be found in the Cornell Pest Management Guidelines, which are updated yearly, and on the Cornell Fruit Resources Spotted Wing Management page.

First find in Cayuga County

SWD male

Live SWD male, note spot on each wing.

A single male was found the week ending June 11, 2018 in one of four traps set in a red raspberry planting in Cayuga County. The trap that caught the male SWD was set in the interior of the 8-row planting. These traps are being monitored by Nicole Mattoon and Ryan Parker, with Juliet Carroll, Fruit IPM Coordinator, in the NYS IPM Program, Cornell Cooperative Extension.

Red raspberry fruit at this site are still green and, therefore, not at risk of infestation. However, next to the raspberry planting are ripening June strawberries. June strawberry typically escapes injury from SWD in New York. This may be because populations are low to non-existent during the June strawberry harvest season. Another reason June strawberries may escape SWD injury could be the use of insecticides to control other insects, such as spittlebug, tarnished plant bug, or strawberry sap beetle.

Green fruit on raspberry aren’t susceptible to SWD.

As raspberry fruits develop and ripen, take time to mow row middles, eliminate weeds from within the row, and thin canes as described in the blog on pruning caneberries. All these tactics will reduce humidity in the planting, increase sun penetration, hasten drying of foliage and fruit, and promote spray penetration. SWD prefer humid environments.

Guidelines for managing SWD are found on the Spotted Wing Drosophila Management page.

SWD insecticide quick guides updated for 2018

There were a few changes during the past year in the insecticides registered in New York State for SWD management. Most notably:

  • Delegate WG, spinetoram (new product label, 62719-541) no longer needs a 2ee for use on stone fruits, grapes, brambles and blueberries. There is also a supplemental label for blueberries.
  • Radiant, spinetoram (new product label, 62719-545) no longer needs a 2ee for use on strawberries.
  • Entrust SC, spinosad (new product label, 62719-621) no longer needs a 2ee for use on blueberries.
  • Mustang Maxx, zeta-cypermethrin (new product, 279-3426) no longer requires the 2ee for use on stone fruits, grapes, brambles and blueberries.
  • Minecto Pro, cyantaniliprole & abamectin (100-1592) is a combination insecticide for use on stone fruits.

You can get to the quick guides from the Spotted Wing Drosophila Management page:

The quick guides are now always at the same url, so this won’t change with newly posted updates. Please point to the new url on your websites or bookmarks.

Remember, the pesticide label is the law. For example, if you have an older product whose label doesn’t have SWD on it, you’ll need to have the 2ee that goes with that product label.



SWD Update & Discussion for Fruit Producers

Chemung County is hosting a Spotted Wing Drosophila Update and Discussion for Fruit Producers on Tuesday July 10th, 2018, from 9:30 to 11:00 am. This morning session is open to all interested fruit growers and will be held at the Waverly Village Hall, Meeting Room, at 32 Ithaca St, Waverly, NY 14892. Spread the word!

Cornell Cooperative Extension (CCE) of Chemung and Tioga Counties would like to cordially invite regional fruit producers to this meeting on the Spotted Wing Drosophila. Shona Ort, Agricultural Development Specialist, CCE of Chemung County, is organizing this event.

For questions and to register, please contact Shona Ort of CCE Chemung at 607-734-4453 ext 227 or

Male SWD on raspberry. Photo by Dave Handley, UMaine Extension, Highmoor Farm.

Dr. Julie Carroll, Fruit IPM Coordinator, New York State IPM Program, and Dr. Dara Stockton, Postdoctoral Research Associate in Dr. Greg Loeb’s lab, Dept. of Entomology, will give an update on this pest and participate in a discussion with growers on what folks are currently doing to combat it.

Cost to attend is free of charge, but pre-registration is requested in order to ensure enough space, handouts, and refreshments.

SWD update

Most counties reporting in the SWD network have zero SWD captures (gray color) as of June 6, 2018.

As of 6 June 2018, no new reports of SWD trap captures in raspberry or blueberry from across the network have come in. All the NYS IPM Program’s traps checked so far this week in tart cherry had zero SWD, including the site that had two females last week. In a research site where we are monitoring 36 traps in 1.5 acres of raspberries, zero SWD have been caught. Very low populations of SWD and no sustained catch has occurred to date.

Above, on the right, is the latest New York State distribution map built from data entered by the SWD monitoring network participants.

Tart cherry fruit development as of June 4, 2018. Not susceptible to SWD oviposition and infestation at this stage.

June strawberry harvest will begin this week, but the low numbers of SWD caught to date indicate low to no risk to this crop, so far.

In the Finger Lakes, Central NY and Wayne County, raspberry are just beginning to bloom.

Blueberry fruit have set, but are still green and hard.

Tart cherry are also still hard and green.

Hard, green fruits aren’t susceptible to SWD infestation and don’t warrant insecticidal protection.

SWD caught in tart cherry in Wayne County

Two female SWD were caught in two traps, one in each trap, in a tart cherry block near Lake Ontario’s shore in Wayne County during the week ending on May 31, 2018. This tart cherry block had significant SWD infestation in 2017. Fruit are still hard and green in this block and are not yet susceptible to SWD.

Five other farms we are monitoring in Wayne County and one in Ontario County had zero SWD caught.

Reviewing 2017 tart cherry spray records from several farms in the Lake Ontario region showed (1) spray intervals were long, between insecticides effective against SWD, as harvest approached; and (2) blocks with 14- to 30-day-long spray intervals that escaped SWD injury were harvested before SWD either arrived or had built to damaging population levels.

In Michigan tart cherries, where SWD has been problematic for several years, the tactics are to (1) monitor for SWD in the tart cherry orchard; (2) keep an eye on fruit ripening stage, blush signals susceptibility; (3) apply insecticide to protect susceptible fruit if SWD has been caught in the orchard.

In an effort to spare your spray bill, be mindful of the other insects you are targeting in your tart cherries and choose insecticides that will also prove effective against SWD. The SWD insecticide quick guide for stone fruit is available on Cornell Fruit Resources Spotted Wing Management page.

If you’re targeting plum curculio, consider using Exirel, Asana, Imidan, or Minecto Pro. If you’re targeting cherry fruit fly or black cherry fruit fly, consider using Delegate, Exirel, Asana, Imidan, or Minecto Pro. If you’re targeting obliquebanded leafroller, consider Entrust, Delegate, Exirel, Danitol, or Minecto Pro.

Be aware that only a couple materials effective against SWD for tart cherry have short, 3-day, pre-harvest intervals: Exirel (only 3 applications per year) and Danitol (only 2 applications per year). Grandevo, a biological has zero days to harvest and has been shown to be a good rotational product with Entrust in organic systems against SWD in blueberry. Make sure you plan a spray program that will spare these crucial short pre-harvest interval materials for use as harvest approaches.


First find in Erie County

One male SWD has been caught during the week starting May 16 and ending May 22 in one of four traps set in a blueberry planting in Erie County. The trap that caught the SWD was on the edge of the planting next to a woody hedgerow. Sharon Bachman, Erie County Cornell Cooperative Extension, sent in this information today for the traps she is monitoring.

Given the relatively mild winter, we were concerned about SWD being found in NY fruit plantings early this year.

All the traps my program is monitoring, in Cayuga, Onondaga, Schuyler, and Wayne Counties, in berries and tart cherries had zero SWD caught for this week.

If there’s no fruit starting to color, there’s no need for an insecticide spray.

Be vigilant this year with your June strawberries. Look for rough patches of slightly sunken areas on fruit that appear dull red in color. Later maturing varieties may be at risk this year.

More information on SWD? Consult Cornell Fruit Resources’ spotted wing pages,

2018 SWD monitoring network is set to start

We have a great SWD monitoring network set up this year in Cornell Cooperative Extension! Traps will be set in 24 counties at 36 locations with a total of 122 traps.

Faruque Zaman will be monitoring in Suffolk County, Long Island. Laura McDermott, Amy Ivy, and Natasha Field will be monitoring in the Eastern NY Commercial Horticulture Program region. Peter Jentsch will be working with Laura McDermott in the lower Hudson Valley. Jim O’Connell will be monitoring in Ulster County. Bernie Armata will be monitoring in Herkimer County. Shona Ort will be monitoring in Chemung County. Dave Thorp will be monitoring in Livingston County. Don Gasiewicz will be monitoring in Wyoming County. Tess Grasswitz will be monitoring in the Lake Ontario Fruit Program region. Sharon Bachman will be monitoring in Erie County. I’ll be monitoring in Cayuga, Onondaga, Schuyler, and Wayne Counties.

Funding to support this effort comes from Cornell Cooperative Extension Associations and regional programs, the NYS IPM Program, and the NYS Berry Growers Association.

Peter Jenstch, Entomology, Hudson Valley Research Laboratory, Greg Loeb, Entomology, Cornell AgriTech, Paul Hetzler, St. Lawrence County, and others may have research sites that may report findings to the blog.

I will also be monitoring SWD in seven tart cherry orchards in the Lake Ontario and Finger Lakes regions.

SWD findings will be reported to this blog and posted to the SWD NY distribution map. Given the mild winter, it may prove to be an early year for SWD arrival and build up.

Stay tuned!

Berry Crops Field Workshop

Tomorrow! Tuesday, August 29, 2017 from 5:00 to 7:00 PM at The Berry Patch, 15589 NY-22, Stephentown, NY 12168 this workshop will cover the following topics:

  • Plasticulture strawberry production for June bearing and day neutral varieties
  • Low tunnel strawberry production
  • High tunnel raspberry production
  • Exclusion netting to control SWD in blueberries
  • Using computer models to improve pest management of berry crops
  • Collaboration between NEWA,, and NYS Mesonet,

High tunnel raspberry production.

Register by calling Abby at 518-746-2553 or registering the ENYCHP website,

There is no fee, but it will help us provide the appropriate number of handouts etc.

This workshop event will happen rain or shine.

If you have questions, please contact Laura McDermott: 518-791-5038 or

Come and learn from experts! There will be plenty of time for your questions and discussion.

  • Dr. Greg Loeb, Cornell
  • Dr. Juliet Carroll, NYS IPM and NEWA
  • Dale Ila Riggs, The Berry Patch
  • Laura McDermott, CCE ENYCHP

This field workshop is for the commercial berry grower.
Monitoring for pests, designing an effective pest control program, understanding cultural and chemical SWD management strategies and general troubleshooting will all be part of this workshop.


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