According to the University of California Cooperative Extension (UCCE) latest Armyworm Monitoring Update, moth numbers continue to increase in most locations throughout the Sacramento Valley.
During UCCE’s recent trap checks, some fields had more than 1,000 moths for the week. The average typically is 70 per night, which is a record high for as long as the UCCE has been running the trapping network.
The highest numbers were found in Colusa Yolo, Sutter and Yuba counties. To view the most recent trap data closest to you, click here.
Growers are encouraged to monitor closely, as more worms have been found in the field but small larvae are expected to develop in the next couple of weeks.
You can receive weekly armyworm updates from UCCE by signing up here.
For more details on Intrepid® 2F, the only product with the active ingredient methoxyfenozide, registered for use to control armyworm on rice, see this recent CRC e-communication found here.