Now found in 25 of 28 (89%) of Counties in the SWD monitoring network, 2015 will be challenging for late fruit crops in NY. Traps have caught SWD two weeks in a row in 22 of the 25 NY Counties reporting SWD finds.
Of the 48 monitoring sites across NY, only 5 have not yet caught SWD; 90% of all SWD monitoring sites have positive reports of SWD caught in traps.
Some monitoring network participants are sampling fruit, when SWD is first caught in traps, and checking for infestation with salt floatation. At first trap catch, most fruit samples have few to no SWD larvae or eggs in a 50-fruit sample. Monitor your fruit for symptoms and signs of SWD infestation using the methods described in the blog, Do my fruit have SWD?
Those sites where SWD hasn't been caught yet are characterized as having fruit that is not yet ripe, such as fall raspberry, or low fruit set possibly due to the cold winter, such as in blueberry.
Some monitoring sites reported high numbers of SWD in late July/early August, the second consecutive week of trap catch - e.g. 83 in Washington County, 40 in Cayuga County. Cooperators are pulling traps once at sustained catch.
Researchers in Greg Loeb's lab, Department of Entomology, Geneva, studying different lures in the Finger Lakes region are now catching 20-40 SWD per trap. Sites in their study with rigorous spray schedules catch less than 10 SWD per trap. Research projects are wrapping up, too.
Our focus is to provide early warning of SWD arrival in NY State. We will continue reporting on the SWD monitoring network until all sites have caught SWD. If you have any questions, suggestions or comments, please let me know.