Adjuvants Trending Up For Fighting Weed Resistance

Gone with the wind are the days when adding an adjuvant to the spray tank was looked at with major scrutiny. With crop protection chemistries becoming more expensive by the day, and the industry ready to embrace new chemistries that require a higher level of management (compared with glyphosate and the like), making sure herbicide molecules make it to their destination weed unencumbered is a top priority for those on the front lines of America’s war against resistant weeds.

United Suppliers (U.S.) is just one of many companies supplying those applicators, and Dr. Patrick McMullan, adjuvant development manager, says that overall the industry is trending toward using more combinations of different adjuvants in a system, as opposed to simply throwing a surfactant and ammonium sulfate in the tank and calling it a day.

“We’re seeing more oil-based adjuvants like Methylated Seed Oils (MSO) and crop oil concentrates, and more ammonium sulfate in the tanks lately,” admits McMullan. “We’re also seeing a lot of combinations of stuff like ammonium sulfate added with a Drift Reduction Technology (DRT) and a surfactant.”

McMullan says things are changing rapidly though from the days of glyphosate, when all one needed was some ammonium sulfate plus a water softener and maybe a little bit of surfactant in there.

He also says the Ames, IA-based company is keeping busy with its development efforts of adjuvants and adjuvant combinations for the new Enlist Duo herbicide (2,4-D), as well as BASF’s Engenia and Monsanto’s XtendiMax (dicamba).

“There’s some new restrictions with those systems, dicamba for instance cannot be mixed with any ammonium containing product because it becomes more susceptible to volatilization,” he explains. “Generally speaking we are looking at some new molecules for enhancing herbicide uptake into the weed as well as new water conditioners since ammonium is restricted with that chemistry.”

McMullan says the company has received good guidance from Dow, BASF and Monsanto on developing adjuvants for the new herbicide systems, but US is still awaiting word on what the protocol will be for label approval of new adjuvants.

“EPA controls the label, so this is just our best guess but we believe EPA will end up being the ultimate authority on approvals, with guidance from the chemical companies so we’re not putting anything into the tank that effects efficacy negatively.”

Coming down the pipeline in the next couple years is a new “standalone DRT” product that McMullan claims “would be quite unique in the market” and some new surfactants that could have a “real strong fit” in the market. He also says the company is reevaluating its adjuvant portfolio, so there’s a possibility U.S.’ adjuvant offerings could look completely different in 5 to 10 years than it does today.”

Specialty products manufacturer Atlantic-Pacific Agricultural’s (APA) Joe Brennan, product development manager, agrees that adjuvants with a multi-faceted fit in cropping systems are “the thing now, but Hook has been the thing for years. It does everything: wetting, spreading, sticking, activation, canopy penetration, as well as drift control (spray deposition).”

Hook is Englewood, FL-based APA’s flagship adjuvant product and has been around for “over 20 years”, according to Brennan. He says that Hook is used extensively in potatoes with paraquat applications, as well as in herbicide applications in soybeans to control resistant marestail and waterhemp.

“Those two key weeds in soybeans are problematic, especially with plants that emerge in May and June, that time of year you don’t want to go slapping a bunch of herbicides down,” says Brennan. “Glyphosate for example, you can only apply so many ounces of that per year, and if you exceed that and you still have weeds then there’s many different herbicides you can add to the tank mix.”

Another area that Hook is deployed is in situations where volunteer weeds remain throughout the season despite initial applications.

“You get the volunteer weeds; the corn in the soybean patch and the beans in the corn field,” explains Brennan. “There’s a lot of volunteer herbicides that you can go back in the field with, and adding an adjuvant with multi-functional properties you most assuredly get those weeds eradicated.

Hook is labeled for both ground and aerial applications, and Brennan wanted to stress that it is also used in mid-season insecticide and fungicide applications (as well as in weed-and-feed systems).

“Throughout the season guys can have issues with rain events washing off inputs and you have to go back and reapply, you’ve got to have an adjuvant in there.”

Leave a Reply

Weed Resistance Stories

Spray Drift
Special ReportsPressure’s Up On Drift Reduction
October 4, 2016
The pressure was already on for the ag industry to reduce drift. Now, after what the South experienced over the Read More
Sprayer Maintenance
Special ReportsSprayer Clean-Out Gets New Attention
October 3, 2016
In this era of glyphosate resistance, the new herbicide systems hitting the market will definitely help, say dealers, but if Read More
WinField booth Farm Progress
Special ReportsTalking Weed Management Strategies At Farm Progress 2016
October 2, 2016
The annual Farm Progress Show — this year staged in Boone, IA — is always a great place to catch Read More
Engenia soybeans
Special ReportsResistant Weeds Continue To Confound Control Efforts
October 1, 2016
In the annals of weed scientists, 2017 will mark a milestone of sorts. This will be the 60th anniversary of Read More
Trending Articles
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
Monsanto sign
Crop InputsMissouri Governor Meets With Bayer CEO To Discuss Monsanto Merger
November 21, 2016
Missouri Gov. Jay Nixon visited Bayer AG global headquarters in Leverkusen, Germany, on November 18 to discuss the proposed Bayer-Monsanto Read More
Latest News
Andersons Retail Store
UncategorizedThe Andersons To Close All Retail Stores; Shutdown Does…
January 16, 2017
In a stunning announcement to the Toledo area, The Andersons Inc. said on Sunday that it would close its two Read More
Trimble TMX-2050 In-Cab Display
Eric SfiligojPrecision To Lead Agriculture In 2017?
January 16, 2017
Another new year is upon us! And I’m certain I speak for many in the agricultural world when I say Read More
Corn
Eric SfiligojThe Mood From Madison? In A Holding Pattern
January 16, 2017
Last week, I had the chance to attend the annual Wisconsin AgriBusiness Classic show in Madison, WI. It’s been a Read More
Syngenta Sign
Crop InputsAccenture Helps Syngenta Transform Its Global Logistics
January 13, 2017
Syngenta, a leading agriculture company, has collaborated with Accenture to design and implement a new digital logistics operating model across Read More
Fall Creek Seth Harden The Nature Conservancy
StewardshipLocal Farmers’ Watershed Initiative: Continuous Improve…
January 13, 2017
The goal in the Big Pine Watershed Project is to more intentionally do what local farmers and responsible ag retailers Read More
HerbicidesEPA Expands Enlist Duo Herbicide Registration To 34 Sta…
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
Olson Ag Enterprise
CropLife 100Wilbur-Ellis Acquires Nebraska Seed Retailer
January 13, 2017
Wilbur-Ellis’ Agribusiness, a recognized leader in precision agriculture technology and the distribution and marketing of plant protection, seed and nutritional Read More
ManagementDeere-Precision Planting Update and the Ag Secretary Wa…
January 12, 2017
Editors Paul Schrimpf and Eric Sfiligoj provide the latest on the court date for John Deere/Precision Planting and the quest Read More
Monsanto sign
Seed/BiotechMonsanto, NRGene Form Agreement For Big Data Genomic An…
January 12, 2017
Monsanto Co. and NRGene have announced that the companies have reached a non-exclusive, multi-year global licensing agreement on NRGene’s genome-analysis Read More
AGCO Custom applicator
SprayersAGCO, Asmark Institute To Offer Training For Beginning …
January 11, 2017
AGCO Corp. and the Asmark Institute are collaborating to offer a new training program dedicated to educating and developing custom Read More
ManagementAg Land Values In Limbo In 2017
January 10, 2017
Several factors will come into play in 2017 that will determine the direction of land values. Randy Dickhut, senior vice Read More
Industry NewsPattison Agriculture Positioned To Be Leading Canadian …
January 10, 2017
Pattison Agriculture Limited (Pattison Agriculture), a division of The Jim Pattison Group (the Pattison Group), has announced the merger of Read More
Fertilizer Tender close-up
MicronutrientsHow Micronutrients Fit Into 2017 Fertility Plans
January 10, 2017
Where do micronutrients stand going forward in fertility plans? For one thing, Tim Mundorf, Field Representative with Midwest Laboratories, says Read More
Fertilizer application
State of the IndustryCautious Optimism On Fertilizer In 2017
January 10, 2017
What kind of fertilizer rates are growers and retailers looking at in 2017 and beyond? According to stakeholders CropLife magazine Read More
Asmus Farm Supply crop protection products in storage
State of the IndustryCrop Protection Products Market: Complexity Begets Oppo…
January 10, 2017
While other key market segments in agriculture continue to see tumultuous shifts in sales volumes going forward (large equipment sales are Read More
RoGator RG1300B AGCO
Sprayers10 Sprayers That Will Showcase The Latest Application T…
January 10, 2017
Sprayer manufacturers continue to step up their games with the latest in application technology. From direct injection systems and four-wheel Read More
Soybean Field
FungicidesGrowers Report Yield Boost, Extended Residual Disease C…
January 9, 2017
With the new growing season around the corner, it’s time to start thinking about inputs for 2017. As growers weigh Read More
Donald Trump
Eric SfiligojTrump’s New Ag Secretary Coming Soon?
January 9, 2017
As agricultural experts are quick to point out, incoming President Donald Trump largely has the nation’s growers to thank for Read More