You have a lot of choices to make each year, and thorough weed management plans are at the top of your list. As you battle tough, resistant weeds like waterhemp or Palmer amaranth, choosing the right trait platform is critical to help you enable the best solutions to manage those weeds. Shawna Hubbard, Corteva Agriscience Enlist™ herbicide product manager, emphasizes the Enlist weed control system is a solution built for you to take down your toughest weed challenges.
“Enlist E3 soybeans and Enlist cotton are tolerant to three postemergence herbicides featuring different sites of action: 2,4-D choline, glyphosate and glufosinate — the active ingredient in Liberty herbicide,” Hubbard says. “This allows farmers to use multiple sites of action in one pass.”
If you’re planting Enlist E3® soybeans or PhytoGen Enlist® cotton this year and need to control waterhemp or Palmer amaranth, Hubbard recommends a postemergence tank mix of Enlist One® and Liberty® herbicides. With this tank mix, you can spray on your schedule with no calendar cutoff dates — through R1 on Enlist E3 soybeans and early bloom on Enlist cotton.
“A tank mix of Enlist One and Liberty herbicides is the most effective and powerful postemergence treatment to control weeds like Palmer amaranth, waterhemp and kochia,” Hubbard says. “In 2020 trials, we saw this tank mix dominate waterhemp and Palmer amaranth.”
Hubbard stresses three important factors to achieve these results:
The flexibility of Enlist One herbicide lets you customize a program approach to weed control. With a tank mix of Enlist One and Liberty herbicides, you get two modes of action working together to tackle the same weed without the concern of acidification in the tank. That means you get powerful weed control without impacting the inherent near-zero volatility of 2,4-D choline in Enlist One herbicide.
To optimize this tank mix, ensure you’re following these guidelines before you spray this season:
Liberty herbicide is the preferred glufosinate of the Enlist weed control system to allow farmers more flexibility and weed control options. For more information on how a tank mix of Enlist One and Liberty herbicides can help you kill more weeds, talk with a local Corteva Agriscience representative and view this fact sheet.
1Control of 3- to 4-inch waterhemp in 2020 Corteva Agriscience trials with Enlist One® herbicide at 32 fluid ounces, Liberty® herbicide at 32 fl. oz. and AMS at 2.5 v/v.
2Control of 3- to 4-inch Palmer amaranth in 2020 Corteva Agriscience trials with Enlist One® herbicide at 32 fluid ounces, Liberty® herbicide at 32 fl. oz., glyphosate DMA at 29 fl. oz. and AMS at 2.5 v/v.
™ ® Enlist, Enlist Duo, Enlist E3 and Enlist One are trademarks of Corteva Agriscience and its affiliated companies. ® Liberty is a registered trademark of BASF. The transgenic soybean event in Enlist E3® soybeans is jointly developed and owned by Corteva Agriscience and MS Technologies LLC. Enlist Duo® and Enlist One® herbicides are not registered for sale or use in all states or counties. Contact your state pesticide regulatory agency to determine if a product is registered for sale or use in your area. Enlist Duo and Enlist One herbicides are the only 2,4-D products authorized for use with Enlist™ crops. Consult Enlist herbicide labels for weed species controlled. Always read and follow label directions.
Farmers have choices when planning weed control in Enlist E3® soybeans. Jeff Ellis of Corteva Agriscience notes Enlist Duo® herbicide is a convenient blend of 2,4-D choline and glyphosate, while Enlist One® herbicide is a straight-goods 2,4-D choline that offers more flexibility, including the ability to tank-mix with Liberty® herbicide.
Deciding the right weed control program requires assessing the field and weed pressure. PhytoGen® Cotton Development Specialist Jonathan Siebert, Ph.D., shares the three most common programs featuring Enlist One® and Enlist Duo® herbicides.
Every year between seasons, it’s good to take time to reassess and look back at what did and didn’t work. To prepare for the upcoming growing season, Jeff Ellis, market development specialist for Corteva Agriscience, has tips and recommendations on weed control for corn and soybean farmers.
“Growers going into the wintertime, postharvest, should reflect on their farming practices,” Ellis says. “They should look at their weed control, nutrient management, hybrid and variety selections to see what they had better success with and what they should reevaluate.”
He emphasizes the importance of educational opportunities to learn about new products and technologies, rather than relying only on what has worked in the past. Using new or additional herbicide trait technologies can help address weed control issues. These trait platforms allow farmers to incorporate different sites of action into a program approach to control difficult weeds, like Palmer amaranth and waterhemp.
Weed pressure doesn’t change year after year too often, but in this short video segment Ellis describes what weeds can be expected throughout the Midwest.
The Enlist™ weed control system gives farmers the flexibility they need for weed control. With tolerance to 2,4-D choline, glyphosate and glufosinate in Enlist E3® soybeans and Enlist cotton, farmers can design a custom program approach to tackle their weeds on acres where they’ve planted Enlist crops.
After assessing what weed problems appeared last year, Ellis strongly encourages farmers to develop a program approach for weed control. In these video segments, he explains why a program approach is key to help prevent weeds – from preemergence to postemergence – for both soybeans and corn.
A program approach also helps prevent weed resistance from developing. On acres featuring Enlist crops, start by applying a soil-applied residual herbicide preemergence followed by a postemergence application that includes Enlist One® plus another site of action or Enlist Duo® herbicide, which contains two sites of action: 2,4-D choline and glyphosate. Consider including EverpreX® herbicide for soybeans for residual weed control. If weeds continue to be persistent, plan for multiple post passes.
Farmers should talk with their seed dealers or crop protection retailers to help finalize their plans and program approaches that fit their herbicide-traited acres. To learn more about the Enlist weed control system, talk with a local Corteva representative, watch our YouTube channel or follow us at @EnlistOnline.
When launching the Enlist™ weed control system, developers followed a “measure twice, cut once” philosophy. Their responsible, measured approach is why Enlist™ crops and herbicides are showing farmers there’s a better way ahead.
“We know the power in launching the entire system – trait and herbicide – together cohesively,” says Shawna Hubbard, Corteva herbicides trait product manager. “All aspects of Enlist technology are proprietary to Corteva, created to work together for effective weed management."
Hubbard says the power of the system comes from the relationship between the trait and the herbicide.
“Enlist One and Enlist Duo herbicides were made to be used specifically with Enlist corn, Enlist cotton and Enlist E3 soybeans,” she says.
The reason these herbicides are so effective against tough weeds is that they’re based on the foundation of 2,4-D, developed in the 1940s. Enlist developers have a long history of working with 2,4-D esters and amines, knowing the strength of the systemic control of broadleaves with the active ingredient.
“They developed a unique product in 2,4-D choline,” Hubbard says. “It features near-zero volatility, significantly improving on the previous forms of 2,4-D to create a product that would eventually be sprayed on tens of millions of acres, with confidence that it would not get up and move after application."
Enlist herbicides are built to land and stay where they’re sprayed. Enlist Duo® herbicide is a convenient blend of 2,4-D choline and glyphosate. Enlist One® herbicide is a straight-goods 2,4-D choline that offers a critical benefit – tank-mix flexibility. Farmers can tank-mix Enlist One herbicide with Durango® DMA® herbicide( glyphosate), with Liberty® herbicide (glufosinate), with an AMS or with any of more than a thousand other products. For more information, visit EnlistTankMix.com.
Another key factor that Hubbard points out is the ability for third-party researchers to assess Enlist herbicides before commercialization.
“We believe collaboration with the industry is important,” Hubbard says. “Researchers at universities had access to Enlist herbicide as early as 2007. Some universities conducted volatility studies as early as 2011.”
In addition, the developers of Enlist technologies worked with grower groups, ag organizations and producers of specialty crops to ensure these herbicides reacted as expected.
“We continue to work with third parties to maintain confidence in our weed control and on-target properties,” Hubbard says. “Third-party access is important to give farmers and applicators peace of mind that Enlist herbicides have been thoroughly tested.”
This means farmers can be confident the system will work as expected.
“It goes back to who we are, how we want to treat customers and why it matters going forward,” Hubbard says. “We’ve committed to being careful, thorough and responsible. Growers deserve more, and with Enlist, we’re prepared to dominate the field in 2021.”
™ ® DMA, Durango, Enlist, Enlist Duo, Enlist E3 and Enlist One are trademarks of Corteva Agriscience and its affiliated companies. ® Liberty is a registered trademark of BASF. Enlist One® and Enlist Duo herbicides are not registered for sale or use in all states or counties. Contact your state pesticide regulatory agency to determine if a product is registered for sale or use in your area. Enlist One and Enlist Duo herbicides are the only 2,4-D product authorized for use in Enlist crops. Durango® DMA® is not registered for sale or use in all states. Contact your state pesticide regulatory agency to determine if a product is registered for sale or use in your state. Always read and follow label directions.
Weeds continue to develop resistance to herbicides. Farmers have been asking for new solutions. Steve Snyder, Enlist® field specialist, says the Enlist® weed control system is giving farmers more ways to overcome their weed issues.
“Farmers can use herbicides that feature multiple sites of action to control tough and resistant weeds,” Snyder says. “Enlist E3 soybeans are tolerant to three postemergence herbicides that feature different sites of action: 2,4-D choline, glyphosate and glufosinate – the active ingredient in Liberty herbicide.”
Snyder suggests adopting a program approach that first recognizes the weed challenges in a given field. The farmer can choose herbicide options that are effective against the weed species in that field.
“Try to start clean and stay clean,” he says. “Use a burndown or tillage for early-season weed control. Then apply preemergence herbicides, making sure to include a product or products with residual activity to keep weeds at bay as long as possible.”
Next choose an effective postemergence program.
“The Enlist weed control system allows farmers to employ multiple sites of action postemergence on Enlist crops,” Snyder says. “This not only helps control tough and resistant weeds during the growing season but also helps retard the development of resistant weeds.”
Farmers who plant Enlist E3 soybeans can apply Enlist Duo® and Enlist One® herbicides postemergence to control difficult, resistant weeds. Inherently low volatility 2,4-D choline is the key ingredient in Enlist Duo and Enlist One®herbicides.
“Growers who plant Enlist E3 soybeans can apply Enlist Duo, a convenient blend of 2,4-D choline and glyphosate,” Snyder says. “Or they can tank-mix Enlist One, a straight-goods 2,4-D choline, with qualified products, including Liberty herbicide. Both options provide multiple levels of protection against tough weeds. Users gain convenience and flexibility with Enlist herbicide options.”
The industry-leading triple herbicide tolerance trait gives farmers more choices and flexibility. This system provides a vital new option for controlling tough weeds in soybeans while helping address herbicide resistance.
“The first call should be to your seed dealer,” Snyder says. “Find out what E3 varieties they have available.”
In 2020, Enlist E3 soybeans will be available from all Corteva Agriscience seed brands. In addition, Corteva has been working with other seed providers. More than 100 companies are licensing the Enlist technology and bringing Enlist E3 soybeans to customers. This means, going forward, there will be more options for farmers to get the weed control solutions they need.
Scouting fields can help you make profitable decisions for next year. Take note of weed escapes and update weed management plans to control them. Weeds such as waterhemp, marestail, giant ragweed, Palmer amaranth and others may require a change in your herbicide program to improve weed control and limit the opportunities for these weeds to develop resistance to effective herbicides.
The Enlist™ weed control system works with a herbicide program approach that can take advantage of multiple modes of action to control tough weeds and curb opportunities for resistance.
Residual herbicides are key to start the season right. They help control weeds early in the season, letting the crop get off to a good start, which helps maximize yield potential. In addition, they are the first step in implementing multiple modes of action on the acre. Farmers can follow residual treatments with postemergence applications of Enlist Duo® herbicide and/or Enlist One® with qualified tank-mix partners.
Enlist Duo is a convenient combination of 2,4-D choline and glyphosate. Enlist One is a straight-goods 2,4-D choline that offers additional tank-mix flexibility. Farmers who plant Enlist corn also can use FOP herbicides for an additional effective mode of action on unwanted grasses or volunteer corn without the Enlist trait. Meanwhile, Enlist E3® soybeans are tolerant to glufosinate, which can be used in a tank mix with Enlist One herbicide.
It’s important to scout fields regularly all season long and watch for weed escapes. Resistant weeds often appear as patches in fields. Identifying these areas early helps prevent widespread distribution of seeds from the resistant population. If live weeds are growing next to dead weeds and they are of similar size, the surviving weeds may be resistant to the herbicide used in the field.
When you identify resistant weeds, try to control them as quickly as possible, preferably before harvest, when the combine may spread them throughout a larger area of the field. Then develop your weed management plan for the next year to apply effective herbicides that can stop these resistant weeds from further development. You can take advantage of the Enlist weed control system to help curb the spread of glyphosate-resistant and other tough weeds.
Shawna Hubbard is the herbicides product manager for Corteva Agriscience. Her work with the Enlist™ weed control system involves helping inform and educate farmers, retailers and seed brands about the Enlist technology. Well versed in both Enlist traits and herbicides, Hubbard has been instrumental in developing and spreading stewardship messages and best management practices for the Enlist system.
Jeff Ellis is a market development specialist for Corteva Agriscience. He serves customers in eastern Kansas and Missouri.
Steve Snyder is an Enlist® field specialist and serves as the in-field expert for the Enlist weed control system in the upper Midwest, including the Dakotas and Minnesota. His area includes a large number of soybean acres. Steve has more than 30 years of experience in crop protection for Dow and Corteva Agriscience. Snyder and other Enlist field specialists are experts in weed management, application technology and crop research.