By Luis Espino, UCCE Rice Farming Systems Advisor
Looks like the number if moths we are catching is staying low, except for a couple of locations. By this time last year, we were averaging 18 moths per night, mostly all true armyworm. This year, we are not catching more than 10 per night, and in some cases the majority are western yellowstriped armyworm. I have not heard of heavy infestations on headed rice yet.
Graphs available at http://rice.ucanr.edu/Armyworm_traps/
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.
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You must have the Intrepid® 2F supplemental label in hand as if it were on the container. Intrepid® 2F is the only product with the active ingredient methoxyfenozide registered for use to control armyworm on rice. The registration was complete earlier this year, which left the registrant (Corteva Agriscience) no time to include rice on the label. Corteva Agriscience has made the supplemental label available on the CDMS and Agrian websites. For permitting and label questions, please contact your local agricultural commissioner’s office.
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The University of California Cooperative Extension (UCCE) has started the first checks of the season for armyworms throughout the Sacramento Valley.
According to the UCCE, traps will be set up at all 15 monitoring sites that have been used in prior years. Below is a map of those locations-
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