Monthly Archives: August 2018

Education: From the start, a key pillar for Enlist™ weed control system

David Hillger

David Hillger,
Ph.D., herbicide trait field specialist

Retailers understand that successful herbicide application means not just controlling weeds but also taking care when applying near surrounding crops and gardens.

From the beginning, education has been one of the keys to launching the Enlist weed control system. We always realized the importance of committing resources to help users understand this technology and use it correctly. We’re continuing these efforts to reach retailers, applicators and, of course, farmers.

Farmers who’ve applied Enlist herbicides according to the label have controlled their toughest weed challenges and, thanks to Colex-D® technology, seen the value of lower potential for physical drift and near-zero volatility.

Three key pillars of Enlist technology
Stewardship education has been a strong foundation in the development of the Enlist technology. Three important pillars support the Enlist system:

  1. The Enlist trait, which allows farmers to apply Enlist herbicides postemergence on Enlist cotton, corn and soybeans.
  2. Enlist herbicides — Enlist Duo® and Enlist One herbicides — which control tough broadleaf weeds that increasingly challenge farmers. Both feature Colex-D technology to help herbicides stay where they’re sprayed when applied according to the label.
  3. The Enlist Ahead management resource, which is designed to help farmers succeed while promoting the responsible use of the Enlist system.

We developed Enlist Ahead with extensive input from farmers and other key stakeholders. This management resource has been a vital part of our Enlist system since 2012, well before Enlist crops and herbicides were in any farmer’s fields.

Enlist Ahead resources focus on the proactive management of weed resistance, minimizing potential for off-target movement of Enlist herbicides and promoting trait stewardship.

Enlist Ahead training combines in-field training experiences, classroom-style instructor-led sessions and online training. We support training with robust literature and reference materials on, as well as access to our team of in-field experts to help advise about field planning, sprayer setup and application planning.

When I’m visiting with farmers, one of the first things I like to do is understand where they plan to plant their Enlist crops. Together, we’ll look at what crops are in neighboring fields, weed pressure and types of weeds in the field. Then we can tailor a plan using Enlist Ahead resources, including the Enlist Ahead app.

Enlist representatives have worked with and trained tens of thousands of farmers, applicators and retailers at in-field demonstrations across the entire Corn Belt and Cotton Belt.

Retailers can take advantage of many online tools, including the Product Use Guide, sprayer cleanout guide, application guide and the Enlist Ahead detailer, which includes information on the Enlist Ahead app, incentives and other benefits.

Also check out our educational videos on our YouTube channel, visit Experiencing Enlist and follow us on Twitter at @EnlistOnline.

About the author: David Hillger, Ph.D., is herbicide traits field specialist who covers the eastern Corn Belt. He brings his weed science expertise to farmers and retailers who want to know more about Enlist technology, weed control and on-target application. 

®™Trademarks of Dow AgroSciences, DuPont or Pioneer and their affiliated companies or respective owners. 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 in Enlist crops. Always read and follow label directions. ©2018 Corteva Agriscience

Maximize your customers’ profit potential with Instinct® and manure

Across the Midwest, manure is becoming an increasingly important fertilizer type for cornfields during spring and fall. To maximize yield, growers invest their time, labor, machinery and fuel costs to apply liquid manure as an effective nitrogen source. And while there’s much to gain, just like with other nitrogen sources, there is also susceptibility to loss through leaching and denitrification.

To extend nitrogen availability in the soil for up to eight weeks, Instinct® nitrogen stabilizer can be easily mixed directly into deep pits and lagoons. This makes nitrogen available and ready when the crop needs it most: during critical growth stages.

How do manure and Instinct® nitrogen stabilizer work together?              

Mixing Instinct into a manure pit and spreading onto fields will extend nitrogen availability for corn and result in overall higher yield. Spreading manure as a fertilizer type is an effective practice and a natural source of nitrogen but may cause leaching and denitrification. Instinct gives farmers the opportunity to increase yield by 10 to 12 bushels per acre* and reduce leaching into groundwater and denitrification by keeping nitrogen at the root zone for a longer period. For maximum crop growth, Instinct provides available nitrogen up to eight weeks longer in key growth stages for corn.

A straightforward approach

When using common agitation procedures, Instinct can be evenly distributed in the entire manure pit and will not cause damage to pit walls due to being alkaline in nature. Once incorporated with the soil, Instinct® nitrogen stabilizer will release the active ingredient, allowing corn to reach its maximum yield potential. Overall, Instinct provides an average revenue increase of $21 per acre,** proving beneficial to add to any farmer’s operation.

For more information, visit or contact your Corteva Agriscience™ sales representative.

*Vetsch, J., and J. Lamb. 2011. Applying Instinct as a nitrogen stabilizer for fall applied manure

**Based on 452 Dow AgroSciences field trials from 2010-16, resulting in an average increase of 6.1 bu./A at $3.50/bu.

Including Instinct® nitrogen stabilizer into a nitrogen management program will allow corn to have access to available nitrogen during key growth stages

®™Trademarks of Dow AgroSciences, DuPont or Pioneer and their affiliated companies or respective owners. Instinct 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. Federal law does not require any person who applies or supervises the use of Instinct to be certified in accordance with EPA regulations and state, territorial and tribal laws. Some states may have additional requirements related to liquid manure and nitrogen stabilizers. Be sure to consult your state or local Extension service to understand your requirements. When applying Instinct to deep pits, appropriate manure agitation safety steps should be followed: Instinct should be applied directly to the deep pit prior to pumping the pit; a thorough agitation system must be operating in order to evenly distribute Instinct within the deep pit; applicators and handlers of Instinct and manure treated with Instinct are required to use proper protective equipment as stated on the product label; air ventilation systems must be operational inside barns. Always read and follow label directions. ©2018 Corteva Agriscience

Farmers face waterhemp halfway through growing season

While there are dozens of common weeds that threaten yield each season, many Midwest farmers who grow corn or soybeans are facing off with waterhemp now.

This demanding weed is leading the conversation and building strength against herbicides halfway through 2018. It’s crucial to scout diligently, implement a diverse action plan and use a program herbicide approach with multiple modes of action to combat increasingly resistant waterhemp and other common broadleaf weeds.

“New cases of resistant waterhemp are daunting to those of us in the ag industry because it threatens the already-delicate ROI ratio,” says Dave Roome, customer technical specialist, Corteva Agriscience, Agriculture Division of DowDuPont. “But waterhemp can grow stronger each year. We have to stay aggressive at reducing the waterhemp seedbank to protect fall yield and get a head start on next season.”

Roome shares five tips to help farmers manage waterhemp for the remainder of this season and to limit additional resistance development:

  1. Scout diligently. Identify waterhemp early and continue to check your fields now, during midsummer. Ongoing scouting helps farmers plan timely postemergence herbicide applications and identify potential problem fields for the following year. It can be difficult to identify waterhemp in early growth stages because it looks similar to Palmer amaranth and other pigweed species. Waterhemp leaves are generally longer and more lance-shaped than other pigweeds.
  2. Layer residual herbicides. Layering residual herbicides keeps fields clean longer, typically through crop canopy closure, to manage the waterhemp seedbank. In corn, farmers can apply three unique modes of action with SureStart® II herbicide preemergence followed by an additional unique mode of action from Resicore® herbicide early postemergence. In soybeans, Sonic® herbicide provides two modes of action preemergence followed by DuPont EverpreX herbicide for an additional mode of action postemergence. Farmers may also add atrazine to their corn programs and glyphosate to corn and soybean programs, in areas where waterhemp isn’t resistant, to increase the number of different modes of action.
  3. Plant narrower rows. Narrow row spacing can help suppress waterhemp growth by allowing crops to reach canopy closure quicker. Also, tillage is an enemy of waterhemp, Roome says. Tillage can help lower waterhemp populations because the seeds must germinate in the top part of the soil; however, tillage may not be a viable method of control on land prone to erosion.
  4. Prevent weeds from going to seed. Just a few waterhemp weeds left in a field can present significant problems for the next season. Waterhemp that goes to seed in corn or soybean fields can potentially cross-pollinate with a population in another field and build additional resistance.
  5. Maximize application technology. Pay close attention to herbicide labels to maximize the efficacy of the product. Not every herbicide can be applied in the same manner with the same nozzles, water volumes, pressures, and adjuvants. Waterhemp requires herbicide control and effective cultural practices, such as rotating crops, which should be planned for more than a single year at a time, Roome says. When rotating crops, think beyond just rotating corn and soybeans to what you can do in that system. Rotating crops also allows farmers to rotate modes of action and adjust tilling plans for corn and soybean fields.

For more information about controlling waterhemp in corn, visit For waterhemp control in soybeans, visit

1Heap, I. 2018. The International Survey of Herbicide Resistant Weeds.

Palmer amaranth vs. Waterhemp

Waterhemp and Palmer amaranth look similar, but waterhemp leaves are generally longer and more lance-shaped than other pigweeds.

®™Trademarks of Dow AgroSciences, DuPont or Pioneer and their affiliated companies or respective owners.  DuPont EverpreX herbicide, Resicore, Sonic and SureStart II are not registered for sale or use in all states. Resicore and SureStart II are not available for sale, distribution or use in Nassau and Suffolk counties in the state of New York. 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. ©2018 Corteva Agriscience

Learn what’s happening in the field via Experiencing Enlist

Farmers across the country are seeing firsthand the benefits of the Enlist weed control system. They’re managing herbicide-resistant weeds that have been a challenge in recent years.

In the South, farmers are growing PhytoGen® cottonseed with the Enlist trait, as well as raising Enlist E3 soybeans for seed production. In the Midwest, farmers also are raising Enlist E3 soybeans for seed production or in a closed-loop system as part of a collaboration between Corteva Agriscience, Agriculture Division of DowDuPont, and ADM. This year also marks the first year that Enlist corn is commercially available.

Learn from farmers and industry experts as they report on how Enlist crops are performing in on-farm settings across the Corn Belt and Cotton Belt. This year, more participants are sharing their stories and providing information that can help you understand the benefits and work with customers to get the most of the Enlist technology, including Enlist herbicides.

Here’s a sampling from Experiencing Enlist:

“Enlist One herbicide allowed us to tank-mix a residual to provide better control of waterhemp,” says Shane Baxter, a Missouri farmer growing Enlist E3 soybeans for seed production.

“The control Enlist Duo provided was phenomenal,” says Luke Liechty, an Indiana farmer who also is growing Enlist E3 soybeans. “I didn’t see drift or volatility when applying Enlist Duo.”

“You always want multiple modes of action in a field every year,” says Steve Snyder, herbicide trait field specialist. “I suggest three to four modes of action per crop per year.”

Visit or join the conversation on Twitter using #ExperiencingEnlist for more personal stories. You also can access or our YouTube page for additional information on the Enlist system.

®™Trademarks of Dow AgroSciences, DuPont or Pioneer and their affiliated companies or respective owners. ®PhytoGen and the PhytoGen Logo are trademarks of PhytoGen Seed Company, LLC. PhytoGen Seed Company is a joint venture between Mycogen Corporation, an affiliate of Dow AgroSciences LLC, and the J.G. Boswell Company. Enlist E3 soybeans were jointly developed by Dow AgroSciences and MS Technologies. 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 are the only 2,4-D products authorized for use on Enlist crops. Always read and follow label directions. ©2018 Corteva Agriscience

Encourage maximum yield with a fine eye for nitrogen deficiency

Realizing maximum yield in the fall begins with a holistic approach to nutrient management. This includes making sure phosphorus (P), potassium (K) and nitrogen (N) levels are adequate to support growth throughout the entire season and knowing how to visually identify those levels in the corn crop.

Applied nitrogen is particularly vulnerable to leaching, meaning the loss of nitrates into the groundwater, and denitrification, the escape of greenhouse gases into the environment. If a plant can’t absorb enough nitrogen through the soil, it will cannibalize its own internal sources of nitrogen — draining strength from its stalk and leaves. When that happens, weakened cornstalks, stalk rot and significantly reduced yield can result.

Three signs of nitrogen deficiency in corn to look for are:

  • Firing of leaves (yellowing begins at the leaf tip and progresses along the midrib)
  • Pale green plants
  • Stunted growth and spindly stalks

Fields at the highest risk of nitrogen loss include fall- and preplant-applied nitrogen fields, those composed of sandy soils and fields with poor drainage.

Take time now to scout fields, evaluate your customers’ nutrient management programs and consider changes to maximize efficient nitrogen by protecting applications with a nitrogen stabilizer such as Instinct® or N-Serve®. Instinct and N-Serve help ensure that applied nitrogen is still available in the root zone for plant uptake, especially if heavy rains occurred after nitrogen was applied.

Corn displaying signs of nitrogen deficiency

®Trademarks of Dow AgroSciences, DuPont or Pioneer and their affiliated companies or respective owners. Instinct 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. Do not fall-apply anhydrous ammonia south of Highway 16 in the state of Illinois. Always read and follow label directions. ©2018 Corteva Agriscience

Weed control Q&A

Operation: Clean Fields is a retailer-exclusive website designed to help retailers learn more about soybean topics that matter to them and their customers. Throughout the year, retailers have sent in their own questions about soybean herbicides and field experts have answered several online.

Michigan retailer Chad submitted the following question to Operation: Clean Fields and will receive a $250 gift card as a reward. Corteva Agriscience, Agriculture Division of DowDuPont, market development specialist Kent Bennis has the answer.

Q: When layering a preemergence program on soybeans, what is the best method to follow it with postemergence?

A: Thank you for your question, Chad. DuPont EverpreX herbicide is an excellent postemergence herbicide to follow a layered preemergence program. We recommend applying EverpreX at the second to third trifoliate stage in 15-inch or narrower soybean rows. For 30-inch rows, we recommend targeting the fourth to fifth trifoliate stage for residual applications of EverpreX. This application timing allows EverpreX to be absorbed into the soil earlier, which opens the window for additional post applications.

Visit here for more information about EverpreX.

Read more Q&A’s and send in your questions for a chance to receive a $250 gift card by visiting

®™Trademarks of Dow AgroSciences, DuPont or Pioneer and their affiliated companies or respective owners. DuPont EverpreX herbicide 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.

Show Farm offers access, ideas and innovation

On 30 acres of land, just north of Indianapolis, Indiana, sits the Show Farm managed by Corteva Agriscience, Agriculture Division of DowDuPont. The Show Farm demonstrates many of the innovative technologies that Corteva Agriscience has to offer from crop protection, seed treatment innovations, seed technology, digital agriculture, new trait technology and nitrogen maximizers. The plots are filled with many Corteva Agriscience products and gives visitors the benefit of seeing exactly what farmers can accomplish with technology from Corteva Agriscience.

An industry leader 

Since its launch in 2010, the Show Farm has annually hosted thousands of people, who come to see new and existing seed, trait and crop protection technologies. Andy Fordice, U.S. category leader: Enlist, FeXapan and Core Herbicides, plays an important role in the operation of Show Farm.

“For our grower customers, the Show Farm is there to enrich their lives and make them more profitable,” Fordice says.

A retailer asset

Used as a powerful tool to tell the story of Corteva Agriscience, Show Farm is a hands-on way for visitors to experience products and technologies in a real-life setting.

“Any solution retailers and farmers are looking for in crop protection, they can see it out there at the farm,” Fordice says. “For territory managers: It’s one thing to sit across a table from your customer and talk to them about a product; it is another thing to show them.”

Plan your trip

With Show Farm conveniently close to the Corteva Agriscience global business center in Indianapolis, it’s easy for retailers to combine trips to see both locations, Fordice said.

Open from July 10 to Aug. 24, Show Farm welcomes everyone, but calendar spots fill up quickly. Contact Pam Smith, event planner, at with questions about coordinating a visit or to get more information about the farm.

Visitors at the Corteva Agriscience Show Farm

Visitors on a guided tour and presentation

®™Trademarks of Dow AgroSciences, DuPont or Pioneer and their affiliated companies or respective owners.  VaporGrip® is a registered trademark of Monsanto Technology LLC used under license. DuPont FeXapan herbicide Plus VaporGrip® Technology is a restricted-use pesticide. DuPont FeXapan herbicide Plus VaporGrip® Technology is not registered for sale or use in all states. Contact your local DuPont representative for details and availability. Always read and follow label directions. ©2018 Corteva Agriscience