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.
The University of California Cooperative Extension (UCCE) expects peak moth numbers by the end of June, with armyworm numbers peaking two weeks later.
The Intrepid® 2F Insecticide (EPA Reg. No. 62719-442) Section 18 has been issued for use in Butte, Colusa, Glenn, Merced, Placer, Sacramento, San Joaquin, Sutter, Yolo, and Yuba Counties.