Recent News

Armyworm Season wrap up

Armyworm Season wrap up

By UCCE Rice Farming Systems Advisor Luis Espino 

Overall, 2019 was a year with strong armyworm pressure. In many fields, armyworm densities were high during the tillering stage, requiring a treatment. During the heading stage, densities were low in most fields; however, in several fields, panicle injury was high. 

On average, our moth trapping found that the first moth peak was similar in magnitude than last year’s, about 25 moths/trap/night. However, the first peak in 2019 was a week later than in 2018. We monitored several fields during this time, and infestations only became serious when traps were catching more than 30 moths/night, and the worm population peaked a week after the moth peak. The Intrepid Section 18 was approved earlier than previous years, so growers were able to make treatment decisions early. The heading peak was 12 moths/trap/night; in 2018 this peak was 18 moths/trap/night. Again, the 2019 peak was about a week later than 2018.

Later armyworm infestations should be less problematic than earlier infestations because rice has more foliage and could withstand more defoliation. During the heading stage, fields that were planted early and headed early escaped the most severe armyworm injury that I observed in late planted fields. 

An anomaly observed this year was the population pattern of the western yellowstriped armyworm. In the past four years, the true armyworm has been the species causing problems; while we caught yellowstriped in the pheromone traps, the numbers were low and I did not find any worms in rice fields. This year, yellowstriped numbers in the traps early in the season were high in Colusa and Glenn counties, and then, during heading, high in Colusa and Yolo. I did find some yellowstriped worms in the field during mid tillering, but their density was not high. I’m still puzzled about where these moths are going, and if they are resulting in worm populations.

We will analyze our yearly data and get back to you with some more thoughts during our winter meetings and other outreach events. Thanks to all the growers and PCAs that let us put traps in their fields, Corteva Agriscience for funding, and FarmDog for letting us use their scouting app for free. Also, many thanks to Marcus Rehrman, our Student Assistant that checked all traps weekly even though the AC in the truck is not the best.

Keep updated on this and other important issues by following our UC Rice Blog.

Rice receives project priority

With hard work and a good understanding of the regulatory process, the Commission was successful in gaining IR-4 priority for necessary research on an important armyworm insecticide. Typically thought of as a program only for ‘specialty crops’ the Commission successfully made the case that the minor use of this insecticide on California rice qualified the proposal for consideration. 

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Farm Bill Safety Net Programs Now Open for Enrollment

Farm Bill Safety Net Programs Now Open for Enrollment

By Tyson Redpath, The Russell Group 

The USDA has announced signup for the Agriculture Risk Coverage (ARC) Program and the Price Loss Coverage (PLC) Program covering the 2019 and 2020 crop years. Updated by the 2018 Farm Bill, these revised safety net programs allow California rice growers to enroll and elect coverage in crop-by-crop ARC-County or PLC, or ARC-individual for the entire farm, for program year 2019. This election will apply for the 2019 and 2020 crop years.

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Armyworm Update Sept. 3

Armyworm Update Sept. 3

By Luis Espino, UCCE Rice Farming Systems Advisor

In all locations the number of moths trapped is coming down for the past two weeks of more. I have not been able to check fields for worms recently; I’m sure there are still a few worms out there. However, most of the rice is now past the point when panicles are at risk of significant injury. 

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CRC Board Elections Complete

We welcome the following members and alternates to the Board of Directors for the upcoming 2019/20 term. Thank you to all who ran for the open positions. Please note one alternate position in District 4 is pending contact with a write–in candidate. 

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