UC Rice Blog

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bakanae rice plant in a rice field
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Chlorine Seed Treatments

July 2, 2025
By Sarah Marsh Janish
 In the last month, I’ve had more frequent calls about how to cut costs, with several people mentioning cutting their chlorine seed soak treatment in an attempt to bring down their input costs. This seed soak is used to eliminate bakanae spores from rice seed and is one of the most effective methods to…
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Blanking potential in forecast

June 27, 2025
By Bruce A Linquist
Blanking (floret sterility) can occur during meiosis (pollen formation) when nighttime temperatures drop below 58 oF. Blanking can cause reduced yields. The cooler it is and the more nights during this period with low temperatures have an increasingly negative effect.  You can see in Figure 1, where in…
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Summary of the 2024 Variety Trails

June 26, 2025
By Bruce A Linquist
In 2024 we had eight variety trial locations. Four locations were in what we refer to as warmer locations (north of Hwy 20) and four in the cooler locations (south of Hwy 20 and into the Sacramento Delta region). These trails are funded by the Rice Research Board and fulfill at least two purposes. First,…
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Defoliation
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Don't let your guard down against armyworms

June 25, 2025
By Luis A Espino
I've been looking at some fields this week and I'm seeing high worm populations. These are fields where armyworms have been a problem in the past. I would say this year the numbers I am seeing are much higher than the last three years. In one field in particular, defoliation is close to threshold (25%). …
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Bakanae field
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Bakanae still showing up after bleach treatment

June 18, 2025
By Luis A Espino
In the past few years there has been a steady increase in the incidence of bakanae in the field. Fortunately, the levels of infection we have seen have not resulted in yield reductions. However, talking to those that worked on developing the bleach treatment after bakanae was identified in California, there…
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