Thrips/TSWV status in Yolo & Colusa

Article

2025 7th Report-- June 5th

June 5, 2025
By Patricia A Lazicki, Neil McRoberts
General outlook & thrips population Tomato planting is over, and with the excellent weather we have been having fields are progressing well.  Adult 3rd generation thrips are peaking, and over the next few weeks will be laying their eggs. Any thrips that acquired the virus as larvae by…
View Article
Article

2025 6th Report-- May 29th

May 29, 2025
By Patricia A Lazicki, Neil McRoberts
General outlook & thrips population Thrips population predictions are similar to last week’s update. Generation three is maturing, and adults are predicted to peak 6/8. For most crops the 3rd and 4th generations will present the highest risk of TSWV spreading and causing yield loss.  …
View Article
Article

2025 5th Report-- May 22nd

May 22, 2025
By Patricia A Lazicki, Neil McRoberts
General outlook & thrips populationAs planting wraps up, temperatures remain similar to long-term averages. Thrips population predictions are similar to last week’s update. Generation 2 adults peaked a couple weeks ago; generation three adults are predicted to peak 6/8.  The 3rd and 4th…
View Article
Article

2025 4th Report-- May 15th

May 15, 2025
By Patricia A Lazicki, Neil McRoberts
General outlook & thrips populationPlanting will be wrapping up over the next couple of weeks, though the heat wave coming up next week may cause delays. In general, it’s been good spring weather and earlier plantings are progressing well. The warm weather in the forecast has pushed up population…
View Article
Article

2025 3rd Report-- April 30

April 30, 2025
By Neil McRoberts, Patricia A Lazicki
Thrips populationThrips are currently in Generation 2, with adults predicted to peak in the second week of May. Spring temperatures remain similar to long-term normals, and population predictions have not changed much from last update. Thrips and TSWV monitoringWe have started to monitor thrips coming…
View Article