Nine SWD were caught (1 female and 8 males) in the week ending June 24, 2021 in a blackberry planting in Saratoga County. Although the blackberries are hard and green, the raspberries in an adjacent field are ripe and ready for harvest.
It will be imperative to protect the red raspberry crop during harvest, because they are so very susceptible. Pay close attention to pre-harvest intervals (PHI's) on insecticides used. No doubt, by the time the blackberries are ripe, the SWD population will have built to damaging levels and this crop must be protected with insecticides. The SWD insecticide quick guide for berries can be consulted to put together a program to protect the crop, while rotating among insecticide mode of action to avoid insecticide resistance and observing the required PHI.
Review key steps in SWD management on Cornell Fruit Resources. In Eastern NY, most counties in the network have reached first catch, as can be seen on the distribution map. Suffolk and Steuben County are in the network, have not caught SWD yet, but those data aren't in the system that generates the map.
Again, here's a recap of SWD management in brambles that will prove helpful to get you in the right frame of mind to protect your fruit crops.
SWD Management in Raspberry and Blackberry
Read this blog, Managing SWD in raspberries and blackberries at blogs.cornell.edu/swd1/2019/07/17/managing-swd-in-raspberries-blackberries/
Spotted Wing Drosophila IPM in Raspberries and Blackberries from the NE IPM Center SWD Working Group, neipmc.org/go/swdpub1
Learn more about SWD. Knowledge is power! Check out the information on Cornell Fruit Resources Spotted Wing Drosophila, fruit.cornell.edu/spottedwing/.
Traps at this location are being monitored by Natasha Field, Eastern NY Commercial Horticulture Program, CCE.