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Psyllid captures decline overall, one new Lso-positive – 11 September 2025 update
Potato All Locations
Posted on: September 11, 2025 by Tasha Stanzak
• This week we received traps from 21 fields that we are monitoring. Most fields have undergone vine kill and/or monitoring on them has otherwise ceased.
• We captured a total of 11 psyllids across 3 fields.
• Captures were from Canyon and Twin Falls counties.
• Among the 17 psyllids captured last week, one tested positive for Lso.
This is our last week reporting psyllid captures. Next week we will report on Lso incidence in psyllids captured this week. Psyllid captures from this week were relatively low overall. One of the psyllids from last week tested positive for Lso; this was the first Lso-positive psyllid since early August. Lso incidence this year has been relatively high, but thankfully the relatively low abundance of psyllids should mitigate risk of ZC somewhat. Nevertheless, we encourage you to maintain your IPM programs, especially in areas that have had higher captures of Lso-positive psyllids earlier this season. Next week we will post an end-of-season wrap up.
More information on management of potato psyllids and ZC can be found here:
https://www.uidaho.edu/cals/potatoes/pest-management/psyllid-management
To view the weekly data by site in the old spreadsheet format: https://tinyurl.com/potatopsyllid
Please visit the Idaho Pest Monitoring Dashboard, for graphical summaries of our psyllid captures from 2020 through 2025 and an archive of this year’s weekly updates as the season progresses: https://idahopestmonitoring.org/
