One female SWD was caught in one of four traps set in a raspberry planting in Orange County. The traps at this site were checked on June 8, 2019. Nate Mengaziol, technician with Cornell Cooperative Extension Association of Orange County, is monitoring this site for the Eastern NY Commercial Horticulture Program’s network.
Whenever plants are still blooming, protect pollinators by avoiding insecticide use during bloom and when pollinators are active. Pollinator Network at Cornell – Grower Resources, http://pollinator.cals.cornell.edu/resources/grower-resources/
This farm grows many types of fruit crops. Because trap catch in New York is early this year, many crops that typically escape injury may be at risk of infestation.
Raspberry fruit is still hard and green, but may begin coloring in the next 7-10 days. Although there is no need to treat with SWD-targeted insecticides at this point in time, for those farms where June strawberry harvest is underway, this crop will be at risk. It is relatively easy to use red or yellow sticky cards to monitor for male SWD in strawberry plantings. Set the sticky card traps on the edge of the planting where it is convenient to read them daily. Here’s one place you can order trap and lure supplies – Great Lakes IPM, www.greatlakesipm.com/.
Another approach is to routinely sample a subset of fruit being harvested using salt flotation. This method, described here on Cornell Fruit Resources' SWD Monitoring webpage, will alert you to the presence of larvae in fruit.
A blog with comprehensive coverage of SWD management will be posted in the coming week. In the meantime, consult Cornell Fruit Resources SWD Management, fruit.cornell.edu/spottedwing/management/. Refer to the Cornell Guidelines, cropandpestguides.cce.cornell.edu/.
Commercial growers should have the 2019 versions of the Berry Crops, Tree Fruit, or Grape Guidelines.