Category: 2018 trap network

SWD were caught in a raspberry planting in Wayne County and in two blueberry plantings, one each in Wayne and Onondaga Counties during the week ending July 10, 2018. Fruit is ripe and harvests are underway at these farms. These traps are being monitored by Ryan Parker and Nicole Mattoon, working with Juliet Carroll, NYS IPM Program.

In Wayne County:

• In raspberry — 2 females were caught in a trap on the edge of the planting. The other three traps caught zero SWD.
• In blueberry — 2 males and 1 female were caught, one male in a trap on the crop edge. The two other SWD were in the two traps set within the crop.

In Onondaga County:

• In blueberry — 1 male was caught in one of the traps set on the edge of the planting. The other three traps caught zero SWD.

Spread the word to fellow farmers, extension colleagues, and home gardeners. Sanitation, clean picking, mowing, weed management, judicious irrigation without leakage, planning for improved canopy management via pruning next year, insecticide protection at 7-day intervals with rotation to different modes of action (IRAC group number), reapply after rain — these are some management tactics to put into place at this time.

• SWD monitoring, fruit.cornell.edu/spottedwing/monitoring/ - describes what you can do.
• SWD management, fruit.cornell.edu/spottedwing/management/ - describes what you should do.
• SWD distribution, fruit.cornell.edu/spottedwing/distribution/ - describes where the CCE network is finding it.

11 SWD were caught during the week ending July 10, 2018 in two traps set in a raspberry planting in Niagara County, indicating sustained catch.  The trap set within the crop caught 2 females and 6 males and 3 females and zero males were found in the trap set in the nearby hedgerow.

This jump in numbers is what we've been bracing for. The time of SWD population explosion is here.

Your focus needs to be on two things - management and monitoring:

• SWD monitoring, fruit.cornell.edu/spottedwing/monitoring/
• SWD management, fruit.cornell.edu/spottedwing/management/

Traps at this location are being monitored by Tess Grasswitz, Lake Ontario Fruit Program.

Two SWD females were caught in one out of four traps set in a blackberry planting in Saratoga County during the week ending July 11, 2018. The trap that caught SWD was on the edge of the planting. These traps are being monitored by Natasha Field and Laura McDermott, Eastern NY Commercial Horticulture Program.

Keep an eye on your crop and monitor for SWD!  More information on the SWD Monitoring page.

Protect your crop and use all possible tactics to manage SWD!  More information on the SWD Management page.

A single female was found in a trap set on the edge of a blueberry planting in Washington County during the week ending July 10, 2018. None of the three other traps caught any SWD. Natasha Field and Laura McDermott, Eastern NY Commercial Horticulture Program, are monitoring SWD at this location.

A single female SWD was found in a trap set on the edge of a raspberry planting in Orleans County during the week ending July 10, 2018. The other tap set in the crop caught zero SWD. These traps are being monitored by Tess Grasswitz, Lake Ontario Fruit Program.

Clean harvests, removing overripe fruit, weed management, and mowing all help reduce favorable habitat for SWD. See details on the SWD Management page on Cornell Fruit Resources.

You can monitor SWD in your fruit plantings using a simple, easy to make trap and bread dough lure. Instructions on how to make an SWD trap are available on the Cornell Fruit Resources SWD Monitoring web page. Check traps daily to minimize the number of fruit flies you will need to sort through to find SWD; and focus on identifying the males, because they’re easy to ID. You can also sample fruit and check it for larvae via salt flotation.

Eight SWD were caught in raspberry and 5 in blueberry in side-by-side plantings in Schuyler County during the week ending July 9, 2018. Traps set in raspberry had 1 male and 4 females. Traps on the edge of the raspberry planting had 3 females. Traps set in the blueberry field had 4 females and those on the edge of the crop had 1 female. These traps are being monitored by Ryan Parker and Juliet Carroll, NYS IPM Program.

These data suggest that both raspberries and blueberries are at risk of infestation. Monitoring on your own farm is warranted – using traps, sampling fruit with salt flotation, and examining fruit for signs of infestation. All these methods are described on the SWD Monitoring web page.

Four female SWD were caught the week ending July 9, 2018 in a harvested sweet cherry orchard after two weeks of zero SWD catch. The two traps set within the orchard had 2 females in one and 1 female in the other. The two traps set on the edge of the orchard caught only 1 female SWD. These traps are being monitored by Natasha Field and Laura McDermott, Eastern NY Commercial Horticulture Program. Natasha will check traps next week to see if there is sustained catch.

As with June-bearing strawberry, SWD may use remnant sweet cherry fruit as a resource to feed on and reproduce in, allowing populations to build in the orchard and spill over onto nearby susceptible crops.

Sustained catch of 5 SWD was obtained in Schenectady County during the week ending July 11, 2018. Four traps set in and around summer raspberry caught 2 males in the crop and 1 male and 2 females on the edge of the crop. These traps are being monitored by Natasha Field and Laura McDermott, Eastern NY Commercial Horticulture Program.

10 SWD were caught in Clinton County and 13 SWD in a raspberry field in Essex County and 4 in a blueberry field in Essex County during the week ending July 9, 2018. These traps are being monitored by Andy Galimberti and Amy Ivy, Eastern NY Commercial Horticulture Program.

In Clinton County the four traps were set two each in raspberry and blueberry. The traps in blueberry caught zero SWD. In raspberry, 1 male and 6 females were caught and on the edge of the crop 3 females were caught.

In Essex County, most of the SWD were caught in the raspberry planting - 7 males and 5 females. Only 1 female was caught on the edge of the crop. In the blueberry planting being monitored in Essex County, zero SWD were caught in the crop and 2 males and 2 females were caught on the edge of the crop.

These data suggest that raspberries are at highest risk of infestation, though ripe blueberry are also at risk. Monitoring on your own farm is warranted - using traps, sampling fruit with salt flotation, and examining fruit for signs of infestation. All these methods are described on the SWD Monitoring web page.

52 SWD were caught in Rensselaer County and 67 were caught in Albany County during the weeks ending July 10 and July 9, 2018, respectively. For Rensselaer County, this was the third consecutive week of SWD capture. In Albany County this was sustained catch. Four traps were being monitored at each location by Natasha Field and Laura McDermott, Eastern NY Commercial Horticulture Program.

Specifically for the Rensselaer County location, two traps are within an exclusion netted blueberry planting wherein a single male was caught. Compare that to 39 males and 13 females in the two traps set outside the exclusion netting. These traps were in a hedgerow adjacent to a June-bearing strawberry field that is done being harvested. Prompt renovation of June-bearing strawberry fields is warranted.

This level of trap catch points out the importance of not leaving unharvested, overripe fruit in fruit plantings and orchards. Dropped blueberries and raspberries can be sprayed with Danitol 2.4 EC and dropped apples, pears and stone fruit can be treated with Asana XL (2ee) to control SWD. Review the quick guide on this, if this might be an option you want to pursue to reduce SWD populations. The importance of sanitation to manage this insect cannot be overemphasized.

In Albany County, traps are set in and around summer raspberry, The two traps set in the crop caught 19 males and 9 females; the traps set on the edge of the crop caught 29 males and 10 females. SWD management tactics need to be put in place to protect ripe and ripening raspberries.

If you want to monitor SWD in your fruit plantings, a simple, easy to make trap and bread dough lure can be used. Instructions on how to make an SWD trap are available on the Cornell Fruit Resources SWD Monitoring web page. Check traps daily to minimize the number of fruit flies you will need to sort through to find SWD; and focus on identifying the males, because they're easy to ID. You can also sample fruit and check it for larvae via salt flotation.