Armyworm

Weedy Rice Survey and Updated Armyworm Information

Weedy Rice Survey and Updated Armyworm Information

The UCCE Rice Team will soon carry out a survey of weedy rice across our growing region.
Fields with a recent history of weed rice infestations will be surveyed. Here’s a link to more information on this effort.

Meanwhile, here’s the latest on the Armyworm front:

Moth captures have come down. Worms are finishing their cycle. Most areas saw worm infestations that did not require a treatment. Pupae can be found lodged among rice tillers in areas with thick stands. Some pupae may fall into the water and drown, but some will survive and turn into moths.
The next stage to monitor for armyworms is heading. Armyworms can feed on branches of the developing panicle and cause blanking. We may see another peak of moth activity in a few days. During the peak would be the best time to check for worms again.For pictures of armyworm stages and panicle injury, visit the armyworm monitoring website.

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Intrepid® 2F Armyworm Label Update

Intrepid® 2F Armyworm Label Update

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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