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

Palmer amaranth
HerbicidesSeed Industry Introduces New Palmer Amaranth Test
January 31, 2017
Weed seed can be spread in a variety of ways-including by air, animals, rain, soil and mechanical means. In a Read More
Giant Ragweed
HerbicidesHerbicide Resistance Goes Viral On Twitter
January 26, 2017
“Think differently. Behave differently. Diversify however you can. Not every practice fits on every acre.” That was the message from Read More
Giant Ragweed
HerbicidesStudy: Focusing On Weed Seedbank Can Help Manage Herbicide-Resistant Giant Ragweed
January 18, 2017
Researchers writing in the latest issue of the journal Weed Science provide important insights on the control of herbicide-resistant giant Read More
HerbicidesEPA Expands Enlist Duo Herbicide Registration To 34 States
January 13, 2017
The U.S. EPA has expanded the geography for application of Enlist Duo herbicide from 15 to 34 states. This means Read More
Trending Articles
Farmer and aptop
Matt Hopkins10 Warning Signs Your Website Is Grossly Outdated
February 8, 2017
Your Website is often a visitor’s first impression of your ag retail business. A positive first impression can set the Read More
AgriSync
Matt Hopkins17 Agriculture Apps That Will Help You Farm Smarter In 2017
December 9, 2016
Ag professionals are working smarter, not harder, than ever before. Smart farming technologies have enabled them to reduce costs, maximize Read More
R4023 Sprayer, John Deere
CropLife 100Ag Retail Equipment Report: The Green Party Continues
December 7, 2016
In the annual race for sales in the ag retail equipment marketplace, the color schemes for participants are a little Read More
Mike Stern
Precision AgClimate Corp. CEO Talks Retailer Support For Digital Ag
December 1, 2016
CropLife Magazine’s sister publication, AgriBusiness Global, recently sat down with Mike Stern, CEO of The Climate Corp., following the Monsanto subsidiary’s Read More
Precision AgTrimble Debuts End-to-End FMIS Platform
November 28, 2016
October’s inaugural PrecisionAg Vision Conference left this author with many thoughts and things to ponder in the coming months. Probably Read More
CHS Primeland
CropLife 100The 2016 CropLife 100 Report: Reviewing The Many Bulls And Bears Impacting This Year’s Marketplace
November 28, 2016
For virtually all of 2016, the nation was wholly focused on the big Presidential election. Some folks aligned themselves with Read More
Latest News
Roy Blunt
LegislationARA Recognizes Blunt, Heitkamp For Legislative Efforts …
February 17, 2017
Agricultural industry continues to face federal regulatory challenges. Thankfully, agriculture’s allies in the U.S. Senate stepped forward. The Agricultural Retailers Read More
LegislationThe Fertilizer Institute Commends Senate On Confirmatio…
February 17, 2017
The Fertilizer Institute (TFI) President Chris Jahn issued the following statement on the Senate confirmation of Oklahoma Attorney General Scott Read More
Trump, Senate, Cabinet
LegislationBREAKING: Trump EPA Nominee Scott Pruitt Confirmed by S…
February 17, 2017
Scott Pruitt, who as Oklahoma’s attorney general spent years suing the Environmental Protection Agency over its efforts to regulate various Read More
ManagementFebruary Road Trip Edition
February 17, 2017
Editors Paul Schrimpf and Eric Sfiligoj discuss their recent visits to Indiana and Kentucky. Read More
Heritage Cooperative Finished Building Aerial
ManagementHeritage Cooperative, Agland Co-op Approve Merger
February 17, 2017
Agland Co-op and Heritage Cooperative stockholders have both approved the merger agreement between Agland Co-op and Heritage Cooperative. Now begins Read More
LegislationARA Fly-In: Ag Retail Descends on Capitol Hill, Lawmake…
February 15, 2017
More than 100 agricultural retailers, distributors and suppliers headed to Capitol Hill Tuesday morning for the Agribusiness Congressional Fly-in, according to a Read More
Untreated soybean seed Heartland Coop
Seed/BiotechMarrone Bio Innovations, Groundwork BioAg Bio-stacked M…
February 13, 2017
Marrone Bio Innovations, Inc. and Groundwork BioAg, Ltd have announced successful seed treatment field trials of the world’s first all-biological Read More
NL5000 With G5 Technology
SpreadersNew Leader Introduces NL5000 Dry Nutrient Applicator Wi…
February 13, 2017
New Leader, a division of Highway Equipment Company (HECO), has announced the next generation of spreading technology with the NL5000 Read More
Fertilizer Storage
Crop InputsThe State Of The Fertilizer Industry
February 9, 2017
He’s all hat, no horse.” It’s a humorous way of describing a person who tells a good story, but is Read More
CropLife 100Pinnacle Agriculture Agrees To Credit Agreement Amendme…
February 9, 2017
Pinnacle Operating Corp. has entered into an amendment (the “Amendment”) to its First Lien Credit Agreement that will provide for, Read More
ManagementUpdates on Upcoming Trips, Dow-DuPont, and the Des Moin…
February 9, 2017
Editors Paul Schrimpf and Eric Sfiligoj review a few future travels, along with the latest on big company mergers and Read More
Championship Tractor Pull
EquipmentNational Farm Machinery Show Highlighted By Championshi…
February 9, 2017
The scream of monster engines, the stench of burning rubber and the ground-pounding vibrations of the country’s largest, loudest and Read More
Farmer and aptop
Matt Hopkins10 Warning Signs Your Website Is Grossly Outdated
February 8, 2017
Your Website is often a visitor’s first impression of your ag retail business. A positive first impression can set the Read More
Corn Field
InsecticidesArysta LifeScience, DuPont Collaborate On Rynaxpyr Prem…
February 8, 2017
Arysta LifeScience recently announced that it has entered into a global collaboration with DuPont Crop Protection for the development of Read More
Industry NewsThe Fertilizer Institute Board Elects New Chairman, Vic…
February 8, 2017
The Fertilizer Institute’s (TFI) Board of Directors has elected Chuck Magro, President and CEO of Agrium, and Tony Will, President Read More
Sonny Perdue
ManagementARA Joins More Than 600 Organizations In Support Of Per…
February 8, 2017
The Agricultural Retailers Association (ARA) recently joined with more than 600 agricultural groups on a letter of support for Governor Read More
World Agri-Tech Innovation Summit Panel 2016
Crop InputsWorld Agri-Tech Innovation Summit To Be Held In San Fra…
February 8, 2017
“Breakthrough Applications and Business Models for Sustainable Farming” is the theme of the World Agri-Tech Innovation Summit to be held Read More
Cedar Country Cooperative
Eric SfiligojConsolidation In Agriculture: More Middle Movement
February 7, 2017
If you’ve regularly followed my column, you know I’m something of a movie junkie. Like many, one of my favorite Read More