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. Focusing thrips treatments into the next 4-6 week window will help keep TSWV damage to a minimum.
New thrips population prediction app available
The degree day model we use to predict thrips populations now has a new interface. It is now much easier to use; all you have to do is drop a pin anywhere on the map (you can turn on satellite view if you want to find a specific field) and the app will generate thrips phenology based on degree days at that location.
It is freely available here: https://qbelabgroup.shinyapps.io/WFT_dd/
Local monitoring
We continue to see very high numbers of thrips this year. More TSWV infections are starting to pop up, however still at fairly low levels (<1-2%.
As always, feel free to contact me if you have a suspected infection you would like confirmed (Patricia; 530-219-5198)