Thursday, February 12, 2026

weedy rice

Research uncovers 2 pathways to herbicide resistance in weedy rice

⋅ BY FRED MILLER ⋅ U of A System Division of Agriculture Researchers in Arkansas and Missouri have confirmed two genetic pathways that lead to herbicide resistance in weedy rice, a major pest for Arkansas rice growers. Most herbicide-resistant weedy rice in...

Research tackles ever-evolving problem of weedy rice

Out-crossing with red rice creates multi-hued weedy rice. • By Fred Miller • Red rice in the field was a problem for rice growers, but at least it was easy to spot. Years of out-crossing with cultivated rice varieties has resulted...

Sign up for the Sept. 10 CA Rice Pest Management Course

The in-person one-day Rice Pest Management Course course will be held Sept. 10 at the Hamilton Road Field near Biggs, California. It's located on West Hamilton Road between Highway 99 and Riceton Highway. It is hosted by the University...

California growers should consider fallowing worst weedy rice fields

• By Whitney Brim-DeForest and Tim Johnson • The absence of a registered herbicide to control weedy rice in California leaves growers with fewer options to control this important pest. Planting clean seed, as required by the Certification Act, is...

UC confirms 6 weedy rice samples; survey updates infested acreage

During the 2020 season, 31 new suspected weedy rice samples were received and six were confirmed to be weedy rice. Three came from new sites in Sutter, Yuba and San Joaquin counties. The other three came from already infested fields....

A worldwide pest

International conference highlights the need to remain proactive against weedy rice. • By Luis Espino • This February, I had the opportunity to travel to Pelotas, Brazil, to attend the Seventh International Temperate Rice Conference. The meeting brings together temperate rice-producing...

Stay alert

Continue to keep eyes peeled for weedy rice in California fields. • By Vicky Boyd, Editor • The amount of California rice ground infested with weedy rice hovers around 14,000 acres, leading experts to believe that pest control advisers and growers are...

Washington University researcher nabs $2.6 million grant to study weedy rice

Many farmers struggle with an enemy that looks like a friend. Agricultural weeds that are close relatives of crops present a particular challenge to farmers because their physical similarities to the desirable species make them difficult to detect and...

UC continues studies into using drones to spot spray weedy rice

• By Whitney Brim-DeForest, Sean Hagan and Luis Espino • For the past several years, California rice has been dealing with a pesky new weed, weedy rice, aka “red” rice. Weedy rice is a difficult pest to manage, because it...

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...

Researchers get to the root of weedy rice’s aggressiveness

Weedy rice is neither wild rice nor commercial rice, but instead rice gone rogue that has shed some traits important to people. It also is an incredibly aggressive, potentially detrimental weed that pops up almost everywhere rice is grown, and...

Consider a seed treatment to boost seedling vigor

Early season disease management is becoming increasingly important as Texas rice farmers trend toward planting earlier at lower seeding rates (about 50 percent of Texas rice acreage is planted to hybrids). Clearly, the earlier plantings have a better chance...

UC seeks California growers’ help with weedy rice survey

The University of California is seeking producers' and farm managers' help as they conduct a survey of weedy rice infestation and rice production practices in the state that may affect the weed's persistence and infestation levels. As you know, weedy rice...

Seeing red

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...

Lessons learned

Researchers fine-tuned N, seeding recommendations for Provisia rice during 2018 season. The 2018 season was the first year the Provisia variety, PVL01, was grown commercially. Louisiana grew approximately 10,000 acres of PVL01, and the average yield was about 42-43 barrels...

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