This is the final report of the 2023 potato psyllid / Lso monitoring season.
All of the psyllids tested last week were negative for Lso, the bacterium associated with zebra chip disease (ZC).
About 6% of all psyllids tested positive for Lso this year compared to around 1% in most recent years (and 22% last year).
It was another interesting year with somewhat high Lso incidence, but relatively low overall psyllid captures. Captures were only slightly higher than last year, which was among our lowest years ever. Thus, the risk of ZC likely was mitigated somewhat by low psyllid captures despite relatively high Lso.
Thanks again to all of our cooperators who helped to deploy and retrieve so very many yellow sticky traps! And thanks to the growers who let us use their fields for this work!
More information on management can be found here: https://www.uidaho.edu/cals/potatoes/news/psyllid-management To view the weekly data by site in the old spreadsheet format: https://tinyurl.com/potatopsyllid