BASF Survey: Focus On Herbicide Site Of Action To Eradicate Weed Resistance

Respect The Rotation Plot TourWeed control today is more complex and difficult than it was for past generations. Not only do today’s growers need to prepare to face difficult weeds, an increasing number also face herbicide resistance. In fact, three out of four growers who participated in a recent BASF survey suspect that glyphosate resistance is a cause of tough-to-control weeds. A key element to combatting resistance is the herbicide site of action.

Herbicide-resistant weeds became a problem when growers depended on a single-herbicide program over a long period of time without supplementing any significant cultural practices, such as tillage. As the same herbicide was applied year after year, weeds were progressively selected for resistance because only one herbicide site of action was used.

Many wonder about the difference between site of action and mode of action. The site of action is the location within the plant where the herbicide impacts the development process. The mode of action is the name for the process the herbicide uses to control the weed. So site of action is “where” and mode of action is “how.”

“The site of action is the location in the plant where the herbicide has its primary effect,” said Bryan Young, Ph.D., Associate Professor of weed science, Purdue University. “Typically, the target is an enzyme used in carrying out a process like amino acid production or photosynthesis. The herbicide targets that enzyme and stops the process.”

Though sites of action can be referred to by the protein function they inhibit, such as acetolactate synthase (ALS) or p-hydroxyphenylpyruvate dioxygenase (HPPD) they are also grouped numerically based on their function. For example, an ALS herbicide that inhibits amino acid synthesis is labeled as Group Two. This group label is always listed on the product label.

Today, resistance exists to glyphosate, ALS and triazine.

“Because it is the key to a herbicide’s effectiveness, we recommend using a variety of effective sites of action,” said Chad Brommer, Biologist, Herbicides at BASF. “Utilizing different sites of action is like having multiple tools in your weed control tool belt.”

There are about two dozen sites of action registered today for commercial products. About half of those are available in the United States. Because of the limited number of available sites of action and the spread of weed resistance, it’s important to use overlapping effective sites of action to reduce selection pressure on any single site of action and mitigate the development of further resistant populations.

“One way to combat resistance is through rotation and diversification,” said Young. “Even if crops are rotated from year to year, the goal should be to use a diverse combination of herbicide sites of action each year with minimal overlap of any single site of action between years in the same field.”

For improved weed management, use more than one site of action and rotate herbicide usage to control weeds and prevent resistance.

For more quick tips on weed control, visit AdvancedWeedControl.basf.us.

Topics: ,

Leave a Reply

Crop Inputs Stories

Syngenta headquarters in Basel, Switzerland
Crop InputsFortune: Inside China’s $43 Billion Bid for Food Security
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 Bactericide / Fungicide
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
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
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
ManagementWashington Update, Dow-DuPont Earnings, and the Passing…
April 27, 2017
Editors Paul Schrimpf and Eric Sfiligoj talk about the latest Beltway news, crop protection company 1st quarter numbers, and the Read More
BRANDT
CropLife 100Former PotashCorp COO Joins 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