Nav: Home

Recent study documents damage to rice crops by three fall-applied residual herbicides

November 15, 2018

WESTMINSTER, Colorado - November 15, 2018 - Fall-applied residual herbicides are a commonly used control for glyphosate-resistant Italian ryegrass - one of the most troublesome weeds in Mid-South row crops. But research published in the journal Weed Technology shows rice growers need to be cautious. Some residual herbicides can have a negative impact on rice crop performance.

The warning follows field studies conducted in Stoneville, Mississippi, where rice is frequently planted in rotation with soybean, grain sorghum, and cotton. Researchers made fall applications of clomazone, pyroxasulfone, S-metolachlor, and trifluralin to determine their impact on subsequent rice growth and yields.

Each herbicide was applied at both the suggested use rate and at two times the suggested use rate to see whether their persistence in the soil would negatively influence rice planted during the following growing season.

Fourteen days after rice crop emergence, scientists found that pyroxasulfone, S-metolachlor, and trifluralin had produced greater injury to plants than clomazone, regardless of the application rate. The same was true for rice seedling density, height, and maturity.

"Among the herbicides in our study, only clomazone should be used as a fall-applied residual herbicide to target glyphosate-resistant Italian ryegrass prior to seeding rice crops," says Jason Bond of Mississippi State University.
-end-
Full text of the article, "Effect of Fall-applied Residual Herbicides on Rice Growth and Yield" is now available in Weed Technology Vol. 32, Issue 5.

About Weed Technology


Weed Technology is a journal of the Weed Science Society of America, a nonprofit scientific society focused on weeds and their impact on the environment. The publication presents original research and special articles about weeds, crops and new technologies used for more effective weed management. To learn more, visit http://www.wssa.net.

Cambridge University Press

Related Rice Articles:

High-protein rice brings value, nutrition
A new advanced line of rice, with higher yield, is ready for final field testing prior to release.
Rice plants engineered to be better at photosynthesis make more rice
A new bioengineering approach for boosting photosynthesis in rice plants could increase grain yield by up to 27 percent, according to a study publishing January 10, 2019 in the journal Molecular Plant.
Can rice filter water from ag fields?
While it's an important part of our diets, new research shows that rice plants can be used in a different way, too: to clean runoff from farms before it gets into rivers, lakes, and streams.
Rice plants evolve to adapt to flooding
Although water is essential for plant growth, excessive amounts can waterlog and kill a plant.
Breeding better Brazilian rice
Rice production in Brazil is a multi-billion-dollar industry. It employs hundreds of thousands of people, directly and indirectly.
Breakthrough in battle against rice blast
Scientists have found a way to stop the spread of rice blast, a fungus that destroys up to 30% of the world's rice crop each year.
More rice, please: 13 rice genomes reveal ways to keep up with ever-growing population
Rice provides 20% of daily calories consumed globally. We will need more as population grows toward 9-10 billion by 2050.
Ancient rice heralds a new future for rice production
Growing in crocodile infested billabongs in the remote North of the country, Australia's wild rice has been confirmed as the most closely related to the ancient ancestor of all rices.
2-faced 2-D material is a first at Rice
Rice University materials scientists replace all the atoms on top of a three-layer, two-dimensional crystal to make a transition-metal dichalcogenide with sulfur, molybdenum and selenium.
Multi-nutrient rice against malnutrition
ETH researchers have developed a new rice variety that not only has increased levels of the micronutrients iron and zinc in the grains, but also produces beta-carotene as a precursor of vitamin A.
More Rice News and Rice Current Events

Trending Science News

Current Coronavirus (COVID-19) News

Top Science Podcasts

We have hand picked the top science podcasts of 2020.
Now Playing: TED Radio Hour

Our Relationship With Water
We need water to live. But with rising seas and so many lacking clean water – water is in crisis and so are we. This hour, TED speakers explore ideas around restoring our relationship with water. Guests on the show include legal scholar Kelsey Leonard, artist LaToya Ruby Frazier, and community organizer Colette Pichon Battle.
Now Playing: Science for the People

#569 Facing Fear
What do you fear? I mean really fear? Well, ok, maybe right now that's tough. We're living in a new age and definition of fear. But what do we do about it? Eva Holland has faced her fears, including trauma and phobia. She lived to tell the tale and write a book: "Nerve: Adventures in the Science of Fear".
Now Playing: Radiolab

Uncounted
First things first: our very own Latif Nasser has an exciting new show on Netflix. He talks to Jad about the hidden forces of the world that connect us all. Then, with an eye on the upcoming election, we take a look back: at two pieces from More Perfect Season 3 about Constitutional amendments that determine who gets to vote. Former Radiolab producer Julia Longoria takes us to Washington, D.C. The capital is at the heart of our democracy, but it's not a state, and it wasn't until the 23rd Amendment that its people got the right to vote for president. But that still left DC without full representation in Congress; D.C. sends a "non-voting delegate" to the House. Julia profiles that delegate, Congresswoman Eleanor Holmes Norton, and her unique approach to fighting for power in a virtually powerless role. Second, Radiolab producer Sarah Qari looks at a current fight to lower the US voting age to 16 that harkens back to the fight for the 26th Amendment in the 1960s. Eighteen-year-olds at the time argued that if they were old enough to be drafted to fight in the War, they were old enough to have a voice in our democracy. But what about today, when even younger Americans are finding themselves at the center of national political debates? Does it mean we should lower the voting age even further? This episode was reported and produced by Julia Longoria and Sarah Qari. Check out Latif Nasser's new Netflix show Connected here. Support Radiolab today at Radiolab.org/donate.