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4 Lso-positive psyllids; overall captures still moderately low
Potato All Locations
potato psyllid
Posted on: August 8, 2024 by Erik Wenninger
- This week we received traps from 58 of the 58 fields that we are monitoring.
- We captured a total of 21 psyllids across 11 fields.
- Captures were from the following counties: Payette, Canyon, Owyhee, and Twin Falls.
- Four of the psyllids collected last week tested positive for Lso.
Psyllid captures declined this week relative to last week. Captures overall continue to be moderately low and similar to the last two years. One Lso-positive psyllid was from Payette County, one from Elmore County, and two from Twin Falls County. Incidence of Lso usually diminishes over the season, though it is not unheard of to see a few positive psyllids in July to August. Thankfully overall captures have been relatively low this year, which should mitigate risk of ZC even with slightly higher Lso incidence in psyllids.
We urge growers to have their IPM programs in place. More information on management can be found here: https://www.uidaho.edu/extension/ipm/ag-pests/arthropods/psyllids
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 2024 as well as an archive of this year’s weekly summaries: https://idahopestmonitoring.org/
3 Lso positive psyllids; captures tick up only slightly
Potato All Locations
potato psyllid
Posted on: August 1, 2024 by Tasha Stanzak
• This week we received traps from ¬¬58 of the 58 fields that we are monitoring.
• We captured a total of 38 psyllids across 16 fields.
• Captures were from the following counties: Payette, Canyon, Owyhee, Elmore, Twin Falls, and Minidoka.
• Three of the psyllids collected last week tested positive for Lso.
Psyllid captures ticked up only slightly this week relative to last week. Captures overall continue to be moderate and similar to last year. One Lso-positive psyllid was from Payette County and two from Twin Falls County. Incidence of Lso usually diminishes over the season, though it is not unheard of to see a few positive psyllids in July to August. Thankfully overall captures have been moderate this year, which should mitigate risk of ZC even with slightly higher Lso incidence in psyllids.
Nevertheless, we urge growers to have their IPM programs in place. More information on management can be found here: https://www.uidaho.edu/extension/ipm/ag-pests/arthropods/psyllids
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 2024 as well as an archive of this year’s weekly summaries: https://idahopestmonitoring.org/
psyllid captures continue to be moderate; no new Lso positives
Potato All Locations
potato psyllid
Posted on: July 25, 2024 by Tasha Stanzak
• This week we received traps from 58 of the 58 fields that we are monitoring.
• We captured a total of 30 psyllids across 14 fields.
• Captures were from the following counties: Payette, Canyon, Gooding, Twin Falls, Minidoka, and Bingham.
• None of the psyllids collected last week tested positive for Lso.
Psyllid captures continue to be moderate. Captures this week were only slightly higher than what we found at this time over the last two years. Captures in the Treasure Valley and Upper Snake were similar to last week; captures in the Magic Valley ticked up only slightly relative to last week. We have captured a total of only 3 Lso-positive psyllids so far, which is lower than the Lso incidence we found at this time over the last few years. Typically we find the highest incidence of Lso in psyllids early during the season, so this low incidence so far is a good sign that overall Lso incidence for this season may be low.
Nevertheless, we urge growers across the state to have their IPM programs in place. More information on management can be found here:
https://www.uidaho.edu/extension/ipm/ag-pests/arthropods/psyllids
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 2024 as well as an archive of this year’s weekly summaries: https://idahopestmonitoring.org/
psyllid captures tick down; one more Lso-positive psyllid
Potato All Locations
potato psyllid
Posted on: July 18, 2024 by Tasha Stanzak
• This week we received traps from 57 of the 58 fields that we are monitoring.
• We captured a total of 14 psyllids across 11 fields.
• Captures were from the following counties: Canyon (2 fields), Owyhee, Jerome (2 fields), Twin Falls (4 fields), Cassia, and Bingham.
• One more psyllid collected last week in Twin Falls County tested positive for Lso.
Psyllid captures have been ticking down slightly over the last two weeks. Captures this week were similar to what we found at this time over the last two years. So, after seeing moderately high captures at the start of the monitoring season, we are now seeing relatively low captures. We have captured a total of 3 Lso-positive psyllids so far, which is lower than the Lso incidence we found at this time over the last few years.
Nevertheless, we urge growers across the state to have their IPM programs in place. More information on management can be found here: https://www.uidaho.edu/extension/ipm/ag-pests/arthropods/psyllids
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 2024 as well as an archive of this year’s weekly summaries: https://idahopestmonitoring.org/
Yellow rust (stripe rust), Bacterial leaf streak / black chaff, FHB, frost damage in wheat, barley
All Crops All Locations
Yellow (stripe) rust, Bacterial leaf streak, FHB
Posted on: July 17, 2024 by Juliet Marshall
The early season for Idaho was cool and unusually rainy. The weather was good for growth of winter and spring cereals. Stripe rust started developing in winter wheat (LCS Jet in production south of American Falls.) The season was mostly quiet until June 18th – 19th when there were significant frosts and freezing conditions throughout eastern Idaho.
As a result, bacterial infections took off, significantly damaging durum (Tiburon) and spring wheat.
Stripe rust started to show up at very low levels at the end of June, around heading of spring wheat. Initially the hard red spring wheat WB9707 was the first to show infection. Within 2 weeks, WB7696 (hard white spring), WB7313 (hard white spring), and now Holmes (hard red spring wheat) are also showing significant symptoms in production fields. Many other varieties are showing infections and will be rated soon in the Extension Variety Trials. Spring wheat is currently in early grain fill.
There is some BLS in spring barley as well, although it (black chaff) seems much more severe in spring wheat.
Some FHB has been collected in production fields of winter barley. Low levels of FHB are starting to show in spring wheat production fields around Idaho Falls. Night time temperatures and humidity are higher than usual due to cloud cover. Skies are hazy due to smoke from western fires. I am keeping an eye out for the development of additional FHB.
2024 Miller Research Potato Pest Management Field Day
Potato All Locations
Posted on: July 17, 2024 by Jeff Miller
Miller Research will be holding its annual potato pest
management field day on Wednesday, August 21 from 10:00 AM to 12:00 PM. The cost to attend is $20. Two ISDA and two CCA (PM) credits are available. More information can be found by following the attached link.
» https://millerresearch.com/event/2024-miller-research-potato-pest-management-field-day/
