UC Rice Blog

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%). …

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…

When it comes to early season seedling injury, the damages wrought by rice seed midge and tadpole shrimp can be difficult to differentiate. Both are invertebrate pests that feed on young rice seeds and inhibit or terminate rice growth, and both can leave a field devoid of plants. However, taking a closer…

 2025 Rice Production WorkshopAn in-depth workshop that covers the principlesand practices of rice production in CaliforniaJuly 23-24, 20258:30 am - 3:30 pmUCANR Building, 2801 2nd St, Davis, CA 95616Please click here for the agenda: Agenda** Registration required ($200 registration fee includes manual…

Given the current economics of rice, you may be planning on not topdressing. If there is enough N up front as aqua, this should be fine. The question is how to determine if you have enough. One easy, practical way to confirm that you do not need a topdress is to set up a small overfertilized area. To do this…