Current Alerts
Swipe Left or Right to navigate Alerts
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/
Psyllid captures still moderate, no new Lso – 4 September 2025 update
Potato All Locations
potato psyllid
Posted on: September 4, 2025 by Erik Wenninger
• This week we received traps from 17 fields that we are monitoring. Many fields have undergone vine kill and/or monitoring on them has otherwise ceased.
• We captured a total of 17 psyllids across 6 fields.
• Captures were from Gooding, Jerome, and Twin Falls counties.
• Among the 43 psyllids captured last week, none tested positive for Lso.
Psyllid captures were on par with the low-to-moderate numbers that we saw during the past few years at this time. Thankfully all the psyllids from last week again tested negative for Lso; we haven’t had any Lso-positive psyllids since early August. This should have been the last week of reporting on psyllid captures, but the busy season delayed retrieval of traps from some fields, so we hope to have those numbers next week. In the meantime, we encourage you to maintain your IPM programs, especially in areas that have had higher captures of Lso-positive psyllids this season.
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/
Psyllid captures tick up, no new Lso – 28 August 2025 update
Potato All Locations
potato psyllid
Posted on: August 28, 2025 by Tasha Stanzak
• This week we received traps from 31 fields that we are monitoring.
• We captured a total of 43 psyllids across 14 fields.
• Captures were from Canyon, Gooding, and Twin Falls counties.
• Among the 14 psyllids captured last week, none tested positive for Lso.
Psyllid captures ticked up this week in both the Magic and Treasure valleys. This is not entirely surprising given that psyllid abundance very often spikes during August, though captures had been tracking much lower over the past several weeks. Thankfully all the psyllids from last week tested negative for Lso. Some fields have undergone vine kill and will no longer be monitored. Early harvest also limited person-power for trap retrieval from some sites, so those traps will be retrieved next week. We encourage you to maintain your IPM programs, especially in areas that have had higher captures of Lso-positive psyllids this season.
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/
Psyllid captures still low, Lso still present – 21 August 2025 update
Potato All Locations
potato psyllid
Posted on: August 21, 2025 by Tasha Stanzak
• This week we received traps from all 48 fields that we are monitoring.
• We captured a total of 14 psyllids across 8 fields.
• Captures were from Owyhee, Canyon, Gooding, Jerome, and Twin Falls counties.
• Among the 12 psyllids captured last week, 1 tested positive for Lso.
Psyllid captures this week remained quite low, and one more Lso-positive psyllid was captured last week. Overall captures this year have been low to modest with relatively high prevalence of Lso. Thankfully the low captures should help to mitigate the potential risk of ZC that may come with high prevalence of Lso. Interestingly, we still have yet to capture a potato psyllid in the Upper Snake region this year. Please maintain your IPM programs, especially in areas with higher captures of Lso-positive psyllids.
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/
