Tag Archives: university of california

Monitoring armyworms in rice helps reduce damage

california armyworms

Armyworms can be a serious pest in rice as the larvae can eat the rice leaves or panicles and cause yield reductions. In 2015, a severe outbreak of armyworms caught California rice growers by surprise, resulting in yield losses. In a 2018 survey conducted by University of California Cooperative Extension, rice growers reported average yield losses in 2015 ranging from ... Read More »

California Rice Field Day showcases varietal advancements

teresa de leon

• By Vicky Boyd, Editor • Rice breeders at the California Rice Experiment Station are on a roll, having released nine improved varieties in the past 10 years. And their success appears to be continuing as they have two lines — 12Y2175 and 14Y1006 — being considered for potential release in the next few years, said Virgilio “Butz” Andaya, director ... Read More »

UC hosts free weedy rice workshop, Aug. 1

The University of California Cooperative Extension will host a free weedy rice workshop, from 10 a.m.-noon, Aug. 1, at the Colusa Casino Chairman’s Room in Colusa. Weedy rice, an all-inclusive term for red rice and undesirable outcrossings, was confirmed in about six California rice fields in 2003. By 2016, it had exploded and had been found in about 60 fields ... Read More »

Rice fields provide protected habitat for young salmon

paul buttner, california rice commissioin

• By Bob Johnson • A team of researchers is waiting to learn how many of the small chinook salmon that were raised on the healthiest of food in Mike Dewit’s rice field in the Yolo Bypass, fitted with microtransmitters, and released into the Sacramento River in late April survive the arduous journey to San Francisco Bay and the ocean ... Read More »

3 ways to manage nitrogen fertilizer when it rains during planting

aqua N application rig

• By Bruce Linquist • Rain in May, especially in the amounts we have seen this year, are far from ideal for rice growers. It makes establishing seedling, nitrogen management and weed control extra challenging. Rain in May is not new. In 1995, 1996, 1998 and 2005, average May rainfall in the Sacramento Valley was 2.3 inches and average statewide ... Read More »

Not all brown moths are armyworm adults — get to know thy enemy

Yellowstriped armyworm adult

• By Luis Espino • Over the winter, I gave a few presentations that touched on armyworms. In the presentations, I usually had pictures of adult armyworms. Several comments I got after the presentations made me realize that armyworm adult moths sometimes are confused with other moths or butterflies that are seen in abundance at certain times of the year. ... Read More »

And the winner is …

Bruce Linquist records contest data

UC Rice Yield Contest promotes friendly competition while collecting production data • By Vicky Boyd, Editor • The University of California’s Rice Yield Contest may provide bragging rights to the top producers, but it also has proven a good way to collect production data from high-yielding growers. “It’s a lot of fun, but we’re starting to learn some stuff,” says Bruce ... Read More »

Seeing red

new watergrass species

New grass species joins weedy rice as weeds that tested California growers and PCAs in 2018 • By Vicky Boyd, Editor • Although the number of rice acres in California infested with weedy rice — also known as red rice — has remained fairly stable the past few seasons, a new biotype popped up in one field in 2018. Add to ... Read More »

Is it weedy rice or an imposter? UC has some answers

Rice is beginning to head in the California rice-production area. As you scout your fields, keep weedy rice in mind. In the past few weeks, University of California Cooperative Extension farm advisers have received 10 suspect samples. Of these, two have been confirmed as weedy, three are being investigated and the rest have been ruled out. They have also talked ... Read More »