UC Rice Blog

I have received an update from the Butte County Ag Commissioner's office regarding winged primrose willow. Germinating seedlings have been detected recently. At this point, the seedlings are very small and would be very difficult to notice.

I have been alerted of three instances where pyrethroid applications for TPS control have failed. One field had been treated with a pyrethroid two times, and TPS were still alive in great numbers.

I have been getting some questions about the new variety M-209. The most common question is how it responds to blast. Unfortunately, we do not know the answer to that. The last two years there has been very little blast in the valley, so we haven't been able to evaluate M-209's response to blast.

This is a question I have gotten recently. Should a N topdress be planned or can it be avoided? Research conducted by Bruce Linquist, UCCE Rice Specialist, has shown that a N topdress is unnecessary if an adequate amount of N is applied at planting.

In addition to the well-known rice weeds we deal with every year, there are a couple of weeds I want to bring to your attention this year. One is an invasive and the other has been with us for a while.