Tag Archives: weedy rice

Researchers get to the root of weedy rice’s aggressiveness

weedy rice roots

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 it can reduce crop yields by more than 80 percent if it invades a field. Researchers from Washington University in ... Read More »

Consider a seed treatment to boost seedling vigor

seedling disease

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 of producing both high-yielding main and ratoon crops. But planting earlier means exposing seed to lower temperatures and possibly wetter soil, ... Read More »

UC seeks California growers’ help with weedy rice survey

weedy rice

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 is a pest problem that can potentially cause significant losses to the state’s rice industry. UC Rice Farm Advisers Luis ... 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 »

Lessons learned

Provisia Rice

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 per acre statewide (6,804-6,966 pounds per acre; 151-155 bushels per acre). Many growers were satisfied with the Provisia system, and ... Read More »

Clean fields

ross thibodeaux Midland LA

Extremely grassy season put the new Provisia Rice System to the test • By Vicky Boyd, Editor • Growers with resistant weedy rice who planted the first commercial Provisia rice variety in 2018 say the decision was a “no-brainer,” even though they knew it had a slightly lower yield potential. The alternative would have been either suffering significant yield loss due ... Read More »

UC farm advisers ID new weedy rice biotype in a field

type 6 weedy rice

This season, University of California Cooperative Extension rice farm advisers were contacted by several growers and pest control advisers to inspect plants suspected to be weedy rice. When the identification was difficult, farm advisers grew them in the greenhouse to determine if they were weedy or not. Of these, only five turned out to be weedy. The infestations in these fields ... 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 »

Time for California growers to start scouting for weedy rice

weedy rice in california

Now that clean-up herbicide applications are finishing, it is a good time to start thinking about weedy rice. If your field has a history of weedy rice, start scouting for watergrass-looking weeds. Check patches of surviving grass. If the plants have no ligule, they are watergrass. If a ligule is present, they are rice (cultivated or weedy). Also check the ... Read More »

The hunt is on

Weedy rice control remains elusive for California growers, but researchers continue to search for potential herbicides. Read More »