Field Tests Seek Optimal Weed Control Methods For Herbicide-Resistant Soybeans

As the cost and scale of farming operations have increased, so has the usage of herbicide-resistant crops. These crops provide a weed management tool to meet the needs of modern agriculture. A corresponding decrease has been noted in the use of soil-applied herbicides that farmers have relied on heavily in recent decades. Because weed species are developing resistance to herbicides, changes in our weed control methods are warranted.

Reliance on soil-applied herbicides has declined since the introduction of glyphosate-resistant soybeans in 1996 and glufosinate-resistant soybeans in 2009. The number of active ingredients and herbicide modes of action within a growing season have declined in soybean production, along with the total number of herbicide applications.

As glyphosate use has continued, weeds have also developed glyphosate resistance. In the U.S., 13 weed species are now resistant to glyphosate, including Palmer amaranth, waterhemp, and giant ragweed. These weed biotypes affect most soybean and corn production in this country. Methods of weed control are needed that do not lead to more resistant weed biotypes yet have minimal impact on crop yields.

The journal Weed Technology reports on a field experiment conducted in two mid-Missouri counties in 2010 and 2011. Herbicide programs for the management of summer annual grass and broadleaf weeds were tested in soybeans resistant to 2,4-D and glufosinate herbicides. This study compared several treatments of herbicides that contain glufosinate plus 2,4-D: a pre-emergence treatment followed by a post-emergence treatment, a two-pass post-emergence treatment, a one-pass post-emergence residual treatment, and a one-pass late post-emergence treatment.

The two-pass treatments resulted in the highest levels of weed control at 90 percent. The one-pass treatments showed up to 59 percent less control than the 2 pass treatments. In 2,4-D-resistant soybeans, two treatment methods show enhanced control of common waterhemp: a pre-emergence followed by post-emergence treatment, and a two-pass post-emergence herbicide program that incorporate 2,4-D amine with glufosinate. These methods provide better control than glufosinate alone, and they offer similar levels of control of other summer annual grass and broadleaf weeds. Soybean yields were not statistically different among the various sites and treatments.

Read the full article “Influence of Herbicide Programs on Weed Management in Soybean with Resistance to Glufosinate and 2,4”.

Topics:

Leave a Reply

Herbicides Stories

Engenia soybeans
Crop InputsINNVICTIS CROP CARE Introduces VANDAL MOC Soybean Herbicide
April 25, 2017
INNVICTIS CROP CARE, LLC has announced the U.S. EPA registration for VANDAL MOC, a combination of sulfentrazone plus metolachlor. VANDAL Read More
Kochia
HerbicidesINNVICTIS CROP CARE Launches STAVE Post-Emerge Broadleaf Herbicide
April 25, 2017
INNVICTIS CROP CARE, LLC has introduced STAVE as the newest addition to­ its expanding portfolio. STAVE will be a great Read More
Crop InputsWhat do Roundup and Mickey Mouse Have in Common? California Says Both Cause Cancer
April 13, 2017
(SOURCE: East Valley Times) Glyphosate, the active ingredient in Monsanto Co.’s Roundup and many other weed killers, is being added Read More
Waterhemp Weed
Crop InputsHerbicide Resistance: The Numbing Numbers From The Weed Wars
April 2, 2017
As in any war, the longer the conflict goes on, the higher the numbers associated with this fight grow. This Read More
Trending Articles
Crop InputsFlying Under the Radar No More, FMC Goes Big
April 13, 2017
Describing FMC as “under the radar,” admittedly, is probably a stretch. But in a snap of the fingers, FMC upped Read More
Young Corn Plants
Crop NutritionStill Hunting Yields
April 1, 2017
There’s no denying it — the agricultural marketplace today is undergoing a fundamental shift in fortunes. Not too many years Read More
Nutrients for Life Foundation Teacher
FertilizerNutrients For Life Foundation Celebrates 10 Years Teaching Fertilizer Education
March 23, 2017
Those in agriculture know fertilizer is a vital ingredient to grow strong, productive crops. In fact, fertilizer is responsible for Read More
AdjuvantsA New Weed-Control Era Begins: But First, One Last Obstacle
March 4, 2017
There is trepidation, there is reluctance, and there is excitement. Ag retailers feel it all about the new dicamba and Read More
LIFT Academy video screenshot
Crop InputsLIFT Agriculture Academy: A Q&A With West Central Distribution’s Dean Hendrickson
March 1, 2017
West Central Distribution recently launched its LIFT Agriculture Academy, a new, premiere training and professional development resource for West Central’s ag 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
Latest News
BRANDT
CropLife 100Former PotashCorp COO Joints BRANDT Board
April 27, 2017
BRANDT has announced the appointment of another industry veteran to its board of directors. David Delaney, most recently EVP and Read More
Syngenta headquarters in Basel, Switzerland
Crop InputsFortune: Inside China’s $43 Billion Bid for Food …
April 26, 2017
(Via Fortune.com) The worst famine in human history occurred in China from 1959 to 1961. An estimated 34 million people Read More
Syngenta Sign
Crop InputsSyngenta Announces Changes in Board of Directors
April 26, 2017
ChemChina and Syngenta announced changes relating to the new Board of Directors of Syngenta following the closing of the ChemChina Read More
Crop InputsBioSafe Systems Introduces PerCarb Broad-Spectrum Bacte…
April 26, 2017
BioSafe Systems announces PerCarb (Sodium Carbonate Peroxyhydrate), a new alternative to potassium bicarbonate and lime sulfur products for use in Read More
Deere Twitter
EquipmentTop 10 Twitter Pics for #Plant17
April 26, 2017
Despite some wet weather in parts of the Midwest, growers and ag retailers are working feverishly to plant this year’s Read More
Donald Trump
Crop InputsTrump Targets Agriculture with Latest Executive Order
April 26, 2017
(Via UPI.com) President Donald Trump on Tuesday took executive action in an effort to help grow the domestic agriculture industry Read More
AGCO Ratliff featured
EquipmentAGCO Mourns Passing of Company Founder, Industry Vision…
April 25, 2017
AGCO Corp., a worldwide manufacturer and distributor of agricultural equipment and solutions, mourns the passing of founder and former President, Read More
Engenia soybeans
Crop InputsINNVICTIS CROP CARE Introduces VANDAL MOC Soybean Herbi…
April 25, 2017
INNVICTIS CROP CARE, LLC has announced the U.S. EPA registration for VANDAL MOC, a combination of sulfentrazone plus metolachlor. VANDAL Read More
Kochia
HerbicidesINNVICTIS CROP CARE Launches STAVE Post-Emerge Broadlea…
April 25, 2017
INNVICTIS CROP CARE, LLC has introduced STAVE as the newest addition to­ its expanding portfolio. STAVE will be a great Read More
Sonny Perdue
LegislationSonny Perdue Confirmed by Senate as Next Agriculture Se…
April 25, 2017
After months without a secretary of agriculture, the Senate voted Monday evening to confirm former Georgia Gov. Sonny Perdue to Read More
BPIA logo
Seed/BiotechBPIA Files Comments with USDA
April 24, 2017
The Biological Products Industry Alliance (BPIA) has filed comments with the USDA’s Animal and Plant Health Inspection Service (APHIS) Plant Read More
Eric SfiligojHope for Application Equipment Sales
April 24, 2017
The old saying goes that a “rising tide lifts all boats.” If this is indeed the case, then things may Read More
Stewardship video screenshot
ManagementNew Video Raises Awareness of 2,4-D Stewardship
April 24, 2017
A new public service video developed and produced by the 2,4-D Research Task Force, in conjunction with the American Soybean Read More
ManagementAn Inside Look at Award Winning Ag Retailer Gar Tooteli…
April 20, 2017
CropLife Editor Eric Sfiligoj discusses An Inside Look at Award Winning Ag Retailer Gar Tootelian Read More
Students Soybean Field
Industry NewsMACA Announces 2017 Young Leader Scholarship Recipients
April 19, 2017
The Mid America CropLife Association (MACA) Board of Directors selected 11 college students to receive the MACA Young Leader Scholarship Read More
Growmark FS Outlet
SoftwareKnoa Software Solution Helps GROWMARK Boost System Perf…
April 19, 2017
Knoa Software, a leading provider of user experience management (UEM) software, has announced that GROWMARK, Inc., a regional agricultural cooperative Read More
Crop InputsFBN Publishes ‘Voice of the Farmer’ Agricul…
April 17, 2017
Farmer’s Business Network (FBN) released today its “The Voice of the Farmer”, which the company is describing as “a special Read More
ManagementTalking Responsible Ag
April 13, 2017
CropLife Editor Eric Sfiligoj discusses the Responsible Ag program with director Bill Qualls. Read More