Fall Herbicide Applications More Effectively Manage Resistant Italian Ryegrass

 

Glyphosate-resistant Italian ryegrass in a production corn field in Washington County, MS, early spring 2013. (Photo by MSU Delta Research and Extension Center/Jason Bond)
Glyphosate-resistant Italian ryegrass in a production corn field in Washington County, MS, early spring 2013. (Photo by MSU Delta Research and Extension Center/Jason Bond)

Italian ryegrass has shown resistance to five different herbicide modes of action in the U.S. Growers in the Midsouth are seeking new ways to control this threat to crop yields. Field studies show that a fall application of certain herbicides before weed emergence, leads to more successful crop planting and weed control in spring.

The article “Glyphosate-Resistant Italian Ryegrass (Lolium perenne ssp. multiflorum) Control with Fall-Applied Residual Herbicides,” in the current issue of Weed Technology presents results of field tests to determine the most effective timing of residual herbicides for control of glyphosate-resistant Italian ryegrass. Although grown for winter pasture and soil stabilization, Italian ryegrass has easily escaped cultivation, becoming problematic along roadsides and in cereal, vegetable, and grass crops.

“Glyphosate-resistant Italian ryegrass represents a serious threat to crop production systems in the Midsouth,” said Jason A. Bond, an associate researcher and extension professor at Mississippi State University and lead author of the study. “The presence of this weed also jeopardizes traditional glyphosate-based burndown programs. Management of glyphosate-resistant Italian ryegrass requires a multifaceted approach. Herbicide options are limited and Italian ryegrass has a history of rapidly developing resistance to multiple herbicide chemistries.”

If glyphosate-resistant Italian ryegrass is not controlled when fields are burned down, significant plant residue will be present at planting, competing with crop seedlings and hindering herbicide programs. The current study found that an effective management program for glyphosate-resistant Italian ryegrass starts with the application of herbicide prior to emergence, between mid-October and mid-November. Residual herbicides, such as S-metolachlor, trifluralin, and clomazone, can provide control until spring, depending on fall and winter rainfall.

What crops are to be planted in the spring must be considered when selecting a fall residual herbicide. Only S-metolachlor herbicides can be safely used in a field where corn will be planted, and only clomazone is appropriate for rice crops. S-metolachlor and trifluralin herbicides can be used prior to planting cotton or soybean crops.

Full text of the article, “Glyphosate-Resistant Italian Ryegrass (Lolium perenne ssp. multiflorum) Control with Fall-Applied Residual Herbicides,” Weed Technology, Vol. 28, No. 2, April–June 2014, is now available at www.wssajournals.org.

Topics:

Leave a Reply

Herbicides Stories

HerbicidesScouting Key To Next Season’s Soybean Herbicide Program
August 12, 2014
When growing soybeans, growers need to think ahead to stay one step ahead of weeds. That means examining weed threats and evaluating which herbicides work best. Read More
HerbicidesArysta Touts Burndown Herbicide For Brome Management In Wheat
June 4, 2014
Arysta LifeScience North America recommends PRE-PARE Burndown Herbicide for effective brome management in winter wheat. Read More
HerbicidesFall Herbicide Applications More Effectively Manage Resistant Italian Ryegrass
May 14, 2014
Field studies show that a fall application of certain herbicides before weed emergence, leads to more successful crop planting and weed control in spring. Read More
Waterhemp in soybean stubble
HerbicidesThe Weed Resistance Problem: A Matter Of Billions
April 1, 2014
Not only is the amount of money being spent to control these yield robbers high, but the toll it has taken on the human population is growing lager by the day. Read More

Trending Articles

MAGIE 2014 ShowStopper
EquipmentJohn Deere Again Wins MAGIE ShowStopper Award
August 25, 2014
For the second consecutive year, John Deere was honored at the Midwest AG Industries Exposition (MAGIE) for its new R4045 sprayer. Read More
ManagementExpert To Discuss Farmland Value, Rent At Farm Science Review
August 18, 2014
While cropland values in Ohio increased in the past two years, they have remained flat in 2014, declining in some cases, according to an Ohio State University agricultural economist. Read More
EquipmentAdvance Your Technology IQ At MAGIE
August 13, 2014
The Midwest AG Industries Exposition (August 20-21) is the place you need to be to see, study and evaluate how new advances in the equipment, operations, crop protection and fertility sectors can help your business prosper. Read More
HerbicidesScouting Key To Next Season’s Soybean Herbicide Program
August 12, 2014
When growing soybeans, growers need to think ahead to stay one step ahead of weeds. That means examining weed threats and evaluating which herbicides work best. Read More
StewardshipMichigan Agriculture Leaders On Toledo Water Ban: We Want To Be Part Of The Conversation
August 8, 2014
Leaders of Michigan agricultural organizations said Thursday that the government should not have a “knee-jerk reaction” based on last weekend’s water ban in Toledo due to fertilizer run-off in Lake Erie. Read More
CropLife 100BRANDT Acquires Lemon Ag Services
August 4, 2014
The acquisition of Lemon Ag fits BRANDT’s aggressive corporate strategy of providing superior agronomic advice and services for customers in central Illinois. Read More

Latest News

Seed/BiotechBerendes Joins Verdesian Board Of Directors
September 2, 2014
Verdesian Life Sciences announced that Robert Berendes has recently joined the company's board of directors. Read More
CropLife 100Pinnacle Acquires East Kansas Chemical
September 2, 2014
Ranked 82nd on the CropLife 100, East Kansas Chemical will operate as part of Pinnacle's Performance Agriculture brand. Read More
WebinarsWebinars On Demand
September 2, 2014
Register for one of our upcoming Webinars or access our archive of past Webinars to view recordings of presentations that may be of interest to you. Read More
CropLife 100Pinnacle Launches Performance Agriculture Brand
September 2, 2014
Performance Agriculture complements Pinnacle’s existing brands, including Sanders, the company’s flagship farm input retail brand. Read More
Webinars5 Key Benefits Of Attending A Webinar
September 2, 2014
Webinars can provide ag retailers with a convenient option for gaining knowledge on the latest industry issues and solutions. Read More
Crop InputsBASF Is Betting On A Bright Agricultural Future
September 1, 2014
The crop protection products giant is gearing up for a busy time in agriculture by investing in both product production and development over the next couple of years. Read More
Eric SfiligojAn Erie Feeling For Ag
September 1, 2014
Plenty of water issues have been in the news lately, including the continuing drought in California. Read More
CropLife 100Pinnacle Acquires California-Based Retailer
August 29, 2014
Pinnacle Agriculture Holdings will acquire Kerman Ag Resources, Inc., which will operate under Pinnacle's Performance Agriculture brand. Read More
Allied Cooperative Grain Plant
ManagementArcadia Co-op To Merge With Allied Cooperative
August 28, 2014
Allied Cooperative has announced that members of Arcadia Co-op voted in favor of a merger with Allied Cooperative, paving the way for the consolidation which will be effective on December 1, 2014. Read More
InsecticidesBioinsecticide VENERATE Now Registered In California
August 27, 2014
Marrone Bio Innovations' VENERATE is a new tool to help California growers control crop-damaging insect pests, fight the development of insect resistance and reduce pesticide residues on fruits and vegetables. Read More
CropLife 100Two Iowa-Based Ag Co-ops To Merge
August 27, 2014
The Board of Directors and management of United Western Coop, Missouri Valley, IA has completed a merger with Heartland Co-op, West Des Moines, IA, effective September 1, 2014. Read More
FertilizerKoch Expands AGROTAIN Nitrogen Stabilizer Portfolio
August 26, 2014
Koch Agronomic Services, LLC has added two new innovative nitrogen stabilizers to the AGROTAIN product family – AGROTAIN ADVANCED and AGROTAIN DRI-­MAXX. Read More
Seed/BiotechDuPont To Build Two Seed Treatment Centers
August 26, 2014
DuPont has announced construction on two state-of-the-art centers dedicated to developing and testing seed treatment formulations, applications and seed handling techniques in an important step toward bringing new solutions to growers. Read More
Seed/BiotechLoveland Products Acquires A Controlling Interest In Ag…
August 26, 2014
Loveland Products, a subsidiary of Agrium , has announced the company has acquired a controlling interest in Agricen, a Dallas-area agricultural biotechnology company delivering biochemical-based products for efficient and sustainable plant nutrition. Read More
StewardshipUp Close Look At The 2014 Environmental Respect Award W…
August 25, 2014
The 2014 Environmental Respect Award winners were honored recently at the 24th annual event in Wilmington, DE. Read More
Eric SfiligojAg Science Rejection Carries Consequences
August 25, 2014
As innuendo and fear dog the regulatory process, agriculture can’t get the new tools it needs to combat world hunger. Read More
LegislationFarmers Dismayed As New Farm Bill Dumps Direct Payments
August 25, 2014
The threatened end of cash subsidies to the nation’s row crop farmers dates back through at least the last two iterations of national agriculture policy legislation. Read More
MAGIE 2014 ShowStopper
EquipmentJohn Deere Again Wins MAGIE ShowStopper Award
August 25, 2014
For the second consecutive year, John Deere was honored at the Midwest AG Industries Exposition (MAGIE) for its new R4045 sprayer. Read More