Pear Psylla Degree Days (updated weekly on Monday)
This page shows the cumulative pear psylla degree-days (DD) calculated by DAS at selected weather station
locations across the Pacific North-West as part of the integrated pest management (IPM) program
recently developer by the
WSU Entomology Pear Extension and Research group
at WSU-TFREC in Wenatchee, WA. The map below shows the most recently calculated cumulative DD values
at each location.
The DAS calculated pear psylla degree-days, starting on the first week of February, will be available for free to the public for the 2023 season.
|Cashmere.N, WA||Hood River, OR||Medford, OR||Omak, WA||Peshastin.N, WA||Wapato.W, WA||Wenatchee, WA|
Learn more about the newly developed
pear psylla management guidelines and phenology model
at WSU Extension.
Subscribe to DAS to get daily degree-days values, including estimated forecasts, for any weather locations across Washington, Oregon and Idaho, together with timed management guidelines and spray recommendations throughout the season.