UC Rice Blog

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2023 Delta Rice Recap

November 22, 2023
By Taiyu Guan, Consuelo B Baez Vega
Rice production in the Sacramento-San Joaquin Delta region has been steadily increasing in recent years (Table 1). While Delta acreage is only a fraction of that in the Sacramento Valley, Delta yields are consistent with statewide averages.
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Weeds in 2023: Wrap Up

August 23, 2023
By Taiyu Guan, Consuelo B Baez Vega
PCAs and growers were very creative and timely in planning and applying products this year, and control was good in many fields. The two most widespread weed control problems that I noticed this year were the watergrass complex and sprangletop.
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Injured seed with rice seed midge larva
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More Rice Seed Midge During 2023

August 16, 2023
By Taiyu Guan, Consuelo B Baez Vega
In the past three years, there has been an increase in the number of reports of damage to rice by rice seed midge in the Sacramento Valley. During 2021 and 2022, the issue was not widespread, but there were some instances where the damage was severe.
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The Thiobencarb results of monitoring across the sampling sites have generally yielded positive results
with only two samples exceeding the performance goal of 1.5 ?g/L to date.
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2023 Results - Rice Pesticides Program

August 9, 2023
By Taiyu Guan
Significant Thiobencarb Concentration Detections in Colusa Basin Drain. The Rice Pesticide Program (RPP) will enter the 8th week of thiobencarb (i.e., Bolero, Abolish, Willowood Thio) monitoring on June 27.
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