Final 2020 Armyworm Update

Final 2020 Armyworm Update

Here’s the latest information on the armyworm work in the Sacramento Valley, from UCCE Rice Farming Systems Advisor Luis Espino:

Armyworm Monitoring Update

September 9

The number of moths has decreased in all locations. Most fields are drained or being drained right now, and the risk of armyworm injury is very low. 

This is our last update for the 2020 season. I want to thank all growers that helped us monitor armyworm in their fields, and the Rice Research Board and Corteva Agriscience for funding this project. 

chart: average moth captures in the sacramento valley - april through august

Armyworm Monitoring Website

More Armyworm Stories

Highest Armyworm Numbers Expected Soon and Inspection Tips

Highest Armyworm Numbers Expected Soon and Inspection Tips

The University of California Cooperative Extension (UCCE) says the next several days will be critical for growers to monitor their fields, and potentially make any necessary treatment decisions, as armyworm numbers will be at their highest very soon.

As expected, moth numbers peaked last week. Utilizing annual trend data and on-site monitoring, the UCCE says worms in the field will peak this week and next.