UC Rice Blog

The 2025 planting progress for rice in California was a bit unusual compared to other years. I am looking at the USDA figures and while they are not perfect, I think they give a pretty good general indication of planting. Some things to note for the graph shown in Figure 1.Due to a warm dry spring, 2025…

I got a question the other day about the issue of elongated upper internode (EUI). The EUI is a genetic defect where the internode right below the panicle gets unusually long, making the panicle stick up above the canopy. The incidence of this defect varies with year, but it does not have a negative effect…

This article provides information about the upcoming UCCE Weedy Rice Meeting.

I am resending this blog which is similar to one sent out a few weeks ago. I am looking at the current and extended weather forecast, and seeing low nighttime temperatures forecast for the last half of July. This is especially the case for the southern part of the Sacramento Valley. The data I am looking at…

Watergrass (Echinochloa spp.) is the most competitive weed complex in California rice production. These plants can emerge under both continuously flooded and flushed conditions, often resulting in significant yield losses—up to 100% in dry- or drill-seeded systems, and about 50% in water-seeded systems, when…