Helpful Herbicide Hints

Each year a new batch of herbicides is launched by crop protection manufacturers — and your grower-customers depend on you, as their retailer, to explain how each product may or may not fit into their production programs.

That’s not so easy, is it? That’s why we’ve brought in Reid W. Acker, our fictional but competent in-house herbicide advice columnist, to help you sort through your key questions and concerns. Step aside Dear Abby; Reid the Weed Man’s on the case.

Dear Reid: So, what’s new in herbicides this year?

My Extension contacts around the Midwest say most of the active ingredients (a.i.s) in the new crop of herbicide products aren’t new (see chart), but the a.i. combinations are. “Other than Laudis, all the materials are existing active ingredients in new premixes,” says Chris Boerboom, University of Wisconsin Extension weed scientist, noting that therein lies the trick to knowing the new material. Recognizing the component products you’re well acquainted with will allow you to build on familiar properties. “If you understand the ingredients, you understand the product pretty well,” he says. OK, I’ll follow that advice and try to mention the familiar product names to make this easier.

Dear Reid: How do the new herbicides fit into a glyphosate resistance management program?

Resistance management is quite critical. Bill Johnson, Purdue University Extension weed scientist, says it needs to become part of your growers’ routines, especially where fields are typically sprayed with glyphosate three to four times a season. “They need to take the management approach as if this population is developing a low level of resistance,” he says. “There’s a couple of strategies. The cheapest is to really be aggressive in managing it in corn. Drive it down, using broadleaf herbicides and 2,4-D.”

In soybeans, he recommends starting with a clean field, especially in no-till systems. “If we get them to start clean and use a residual herbicide to try to keep the giant ragweed in check, it allows for timely glyphosate treatments. And get the glyphosate rate up as high as they legally can in that first postemergence treatment.”

Laudis is a bleaching herbicide, with the same mode of action as Callisto and Impact, says Bob Hartzler, Iowa State University Extension weed specialist. “It’s for postemergence control in corn, with activity on grass and broadleaf species, although it is stronger on broadleaves. Laudis has the best grass control of the three post bleachers, but probably not good enough to be a stand-alone grass product, and will provide some residual control of weeds.” The safener in Laudis allows it to be used on all corn types.

“Halex GT is a new approach at a one-pass program in glyphosate-resistant corn. It is applied early post with the glyphosate controlling emerged weeds and the metolachlor and mesotrione (Dual and Callisto) controlling weeds that emerge after the application. It’s a reasonable approach, but it does have some risks: 1) application must be timely to prevent weeds that emerge with the crop from impacting yield potential. In fields with heavy infestations there would be a high risk if weather conditions keep the sprayer out of the field when intended; 2) in order to get good control of weeds emerging after application, it will be important to get a good rainfall within three to seven days of application in order to activate the herbicide.”

Dear Reid: What does this year’s crop of soil residuals offer my growers?

That’s a great question, since using a soil residual product is one of the strongest methods of resistance management. Aaron Hager, University of Illinois at Urbana-Champaign Extension weed specialist, reminds us that these products can be used in more than one way. “The underlying thing is that obviously glyphosate is going to need some assistance for certain species, so several of these new products will be well-suited as tank-mix partners, whereas others would be good residual herbicides. We simply need to continue using residual products from a weed interference standpoint,” he says. “You don’t see any new a.i.s in the postemergence glyphosate arena, for example, so if you run out of options for the postemergence control of, say, waterhemp in soybeans, we don’t have any post options coming in the marketplace. We may have to rely more exclusively and heavily on some of the soil residuals.”

Manufacturers understand all this and continue to bring forth new soil residual products. DuPont‘s Envive and Enlite “are premixes of Classic, Harmony GT, and Valor,” says Christy Sprague, Michigan State University (MSU) Extension weed scientist. Mike Owen, Iowa State University Extension weed specialist, adds that the pair have two modes of action, the PPO inhibitor plus ALS. Envive targets the central and southern soybean growing regions, and Enlite — containing less Classic and with no soil pH restrictions — will be marketed in Minnesota, Wisconsin, and northern Iowa.

“Valor XLT is a good product in the soybean market where growers have glyphosate resistance concerns about stewardship performance,” says Bryan Young, Southen Illinois University weed scientist.

Hartzler notes that Authority MTZ, Prefix, Valor XLT, Envive, and Enlite will compete for the same niche, the preemergence market in Roundup Ready soybeans. “None of them will provide full-season, broad-spectrum weed control,” he says. “However, what they do provide is good early-season weed control/suppression that greatly reduces the likelihood of weeds impacting yield potential prior to the postemergence glyphosate applications. This allows the postemergence application to be delayed long enough that there normally won’t be a need to make a second application to deal with late-emerging weeds.”

“They also can reduce the likelihood that weeds resistant to glyphosate will survive,” Hartzler says. “In research I did a couple years ago, PRE treatments reduced selection pressure by 70% to 95% depending on the species. Envive and Enlite would probably have the best burndown activity on winter annual weeds, but all of them do have some foliar activity.”

“SureStart is a premix intended to capture the preemergence market in herbicide-resistant corn,” adds Hartzler. “It’s a premix of acetochlor and the products in Hornet, labeled at lower rates than used in conventional corn since the intent is to only suppress weeds prior to the postemergence application rather than provide full-season control.”

Dear Reid: It seems like any conversation about herbicides revolves around glyphosate, doesn’t it?

It sure does. MSU’s Sprague says it’s almost inevitable with today’s technology. “When you look at the new seed genetics, almost everything is starting to have glyphosate resistance in it, so it’s to be expected,” she explains.

Dear Reid: We had a nasty frost last spring and had to replant our corn crop. Anything new out there for killing off a failed corn stand?

Actually, yes. Select Max from Valent is now labeled for that very use. The University of Wisconsin’s Boerboom notes that it will be a good product for killing a field damaged by frost or flood before replanting.

Dear Reid: I’ve heard about a few deals between some of the ag-chem manufacturers. How will those affect my dealership?

There have been several recent agreements created with the intent to bring improved herbicide options to the market sooner — and that’s good news for your bottom line. For example, DuPont and Valent formed a flumioxazin pact in early 2007 which allows DuPont access to Valent’s soybean active ingredient. Pending registration, DuPont hopes to have products in the market by spring.

DuPont’s seed company, Pioneer Hi-Bred International, has added several herbicides to its TruChoice Opportunity Program: Syngenta‘s Touchdown Total and Touchdown HiTech and AMVAC Chemical Corp.‘s Impact 2.8SC.

In a similar vein, Valent’s Valor, Valor XLT, and Gangster herbicides have been added to Monsanto‘s Roundup Rewards START CLEAN, STAY CLEAN Assurance Plan for Roundup Ready soybeans.

Dear Reid: Any future products you can tell us about?

Naturally, companies can be nervous about EPA’s view of pre-registration talk, but BASF is excited about a herbicide containing a new a.i., currently named BAS 800. Hager says this product is significant, because it shows that the industry is still working to register new actives.

Leave a Reply

One comment on “Helpful Herbicide Hints

  1. Hi im the site coordonator of the Incitec PDC in Townsville Australia. I have a problem when running the blenders at 100t hr no differance to 80t hr. If you have any ideas I would like to know thanks mate.

Herbicides Stories

Herbicides2015 ASA Trials Demonstrate Valent Fierce XLT Herbicide’s Performance
February 2, 2016
Valent U.S.A. today announced that new Fierce XLT Soybean Herbicide ranks in the top tier among growers for length of Read More
HerbicidesMonsanto Takes Legal Action To Prevent Flawed Listing Of Glyphosate Under California’s Prop 65
January 22, 2016
Monsanto Co. is taking legal action to prevent a flawed listing of the herbicide glyphosate under California’s Proposition 65 (Prop Read More
Crop Protection Products in storage
HerbicidesREUTERS: Europe Food Safety Official Wades Into Glyphosate Safety Debate
January 14, 2016
The head of Europe’s food safety watchdog has written to a group of nearly 100 senior scientists strongly rejecting their Read More
Resicore herbicide
HerbicidesDow AgroSciences Receives EPA Registration For Resicore Herbicide
January 11, 2016
The U.S. EPA has approved the registration of Resicore herbicide, which will be available to growers for the 2016 growing Read More
Top 100 Articles
Elburn Cooperative
CropLife 100Elburn Cooperative Members Vote To Join CHS
December 28, 2015
With 81% of eligible producers voting, 94% cast an affirmative ballot for Elburn Cooperative, a diversified agricultural retailer based out Read More
West Central Cooperative, Jefferson, IA
CropLife 100Farmers Cooperative-West Central Merger Approved
December 21, 2015
The members of Farmers Cooperative Co. (FC), Ames, IA, and West Central Cooperative, Ralston, IA, have both approved the merger Read More
Wheat Growers Innovation Center, Bath, SD
CropLife 100Wheat Growers Opens Innovation Center
December 21, 2015
Wheat Growers’ commitment in providing its farmer-owners with the latest in technological advancements now has a one-of-a-kind focal point, as Read More
CropLife 100ARA Selects The Andersons As 2015 Retailer Of The Year
December 9, 2015
The Agricultural Retailers Association today named Maumee, OH-based The Andersons as its Retailer of the Year for 2015. The award Read More
CPS Washington Court House John Deere Sprayer
CropLife 100Application Equipment Report: It Is Easy Being Green For Top 100 Ag Retailers
December 5, 2015
On The Muppets television show, Kermit the Frog is famous for singing a song about the troubles he encounters in Read More
Fertilizer Bin
CropLife 100Fertilizer Sales: Another Down Year For Top 100 Ag Retailers
December 4, 2015
In pure number terms, the fertilizer category still dominates all crop inputs/services among CropLife 100 ag retailers. In 2015, for Read More
Latest News
Crop InputsBayer Contests EPA’s Decision On Valuable Insecticide F…
February 5, 2016
Crop Science, a division of Bayer, has announced it has refused a request by the Environmental Protection Agency (EPA) to Read More
Wheat Field North Dakota
Seed/BiotechSyngenta Wins Seed Fraud Suit Against South Dakota Grow…
February 5, 2016
Syngenta has obtained a $25,000 settlement from Paul and John Mayclin, Mayclin Farms, Plankinton, SD, in response to their Plant Read More
ManagementOABA Annual Conference Wraps Up In Columbus
February 5, 2016
More than 300 Ohio AgriBusiness Association (OABA) members and industry professionals were on hand to engage in collaborative learning and Read More
Crop InputsBayer To Contest EPA Flubendiamide Decision
February 5, 2016
Crop Science, a division of Bayer, announced today it has refused a request by EPA to voluntarily cancel the uses Read More
Syngenta
Seed/BiotechNot So Fast: ChemChina Syngenta Takeover Could Draw Nat…
February 5, 2016
State-owned China National Chemical Corp. (ChemChina), which plans to buy Swiss seeds and pesticide maker Syngenta, will promptly start preparations Read More
Rendering of Syngenta Seedcare Institute expansion
Seed/BiotechExpansion Of Syngenta’s North America Seedcare In…
February 4, 2016
As demand for seed treatment knowledge and products grows among farmers, retailers and others in the seed industry, Syngenta is Read More
Soybean Field
Industry NewsArysta LifeScience Strengthens Sales Team
February 4, 2016
Arysta LifeScience North America recently announced three new personnel additions: Jake Cook and Peter White are Territory Sales Managers for Read More
Davor Pisk Syngenta COO
Crop InputsSyngenta COO: Why ChemChina Offer Beat Monsanto’s
February 4, 2016
Syngenta Chief Operating Officer Davor Pisk says he is confident the proposed acquisition by ChemChina will ultimately help preserve choice Read More
Young corn plants in soil
Crop InputsKoch Biological Solutions Invests In Pathway Biologic
February 4, 2016
An affiliate of Koch Biological Solutions, LLC has acquired a minority equity position in, and entered into collaboration with, Pathway Read More
Crop InputsABG: China Signs Off On Monsanto’s Roundup Ready …
February 3, 2016
Monsanto Co. on Wednesday announced it plans to launch its Roundup Ready 2 Xtend soybeans in time for the 2016 Read More
Syngenta headquarters in Basel, Switzerland
Crop Inputs6 Things To Know About The ChemChina-Syngenta Deal
February 3, 2016
After months of rumors and speculation, Syngenta has announced that ChemChina has offered to acquire the Swiss-based company. “In making Read More
FertilizerPhosphorus: Is Band Or Broadcast Application The Better…
February 3, 2016
Is band or broadcast application the better method when it comes to phosphorus? The answer to this question depends mostly Read More
Syngenta Sign
Crop InputsChemChina Nearing Deal To Buy Syngenta For Record $43 B…
February 3, 2016
China National Chemical Corp. is nearing an agreement to buy Swiss pesticide-and-seeds-maker Syngenta AG for about 43.7 billion francs ($42.8 Read More
Herbicides2015 ASA Trials Demonstrate Valent Fierce XLT Herbicide…
February 2, 2016
Valent U.S.A. today announced that new Fierce XLT Soybean Herbicide ranks in the top tier among growers for length of Read More
Crop Protection Products in storage
Paul SchrimpfCrop Input Selling: Return Of The Price List
February 2, 2016
It was a good 15 years ago, shortly after I first started writing for this esteemed publication, that it all Read More
Potash storage at Growmark
FertilizerThe Phosphate And Potash Outlook For 2016
February 2, 2016
Like other commodities, prices of the leading plant nutrient products dropped sharply in 2015. At this writing, the price of Read More
Chesapeake Bay
StewardshipKeeping A Watch On Water Issues
February 2, 2016
During a down cycle in the market, it’s difficult to think about investing for the long term. For retail businesses, Read More
Young Corn Plants
FertilizerNutrient Considerations For Low Corn Prices
February 2, 2016
Corn prices are low and many producers are asking tough questions about their nutrient management programs. Here are some suggestions Read More