Category Archives: Industry News

Control weeds in the fall to avoid headaches in the spring

When we’re young, we’re taught to not put off until tomorrow what we can do today. That adage applies to a lot of the work on a farm, including weed control. Once harvest ends, it’s a good idea to work with your customers on a fall herbicide application for their spring soybean fields to make everyone’s life a little easier for next year’s growing season.

Tough weeds like marestail, chickweed and dandelions actively grow and germinate throughout the fall. If left to overwinter in soybean fields, they can become even tougher in the spring. By taking action against those weeds now, while they’re still small, your customers can eliminate the need for, or increase the effectiveness of, a spring burndown application.

You’ll want customers to keep a few key points in mind when performing fall herbicide applications:

    • Do not apply to frozen ground.
    • Apply when air temperatures are still relatively warm, about 40 F to 60 F.
    • Apply to weeds that are actively growing.
    • Perform tillage beforehand on particularly weedy fields (if your customers use tillage, of course).

A good fall solution from Corteva Agriscience is Sonic® herbicide. Although Sonic is widely used as a spring preemergence herbicide, it’s very beneficial for fall weed control.

While your customers’ combines have been put away, that doesn’t mean the season is over. By taking out weeds now, their soybeans will have less competition for resources in spring and summer. Doing that work today paves the way for greater yield tomorrow.

To learn more about how Sonic can keep your customers’ soybean fields clean, contact your Corteva Agriscience territory manager or visit corteva.us.

A fall herbicide application of Sonic® herbicide can pave the way for a smoother spring.

™®Trademarks of Dow AgroSciences, DuPont or Pioneer, and their affiliated companies or their respective owners. Sonic 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. © 2019 Corteva.

Sharpen your location skills to help farmers plan herbicide trait placement

Real estate professionals say the keys to success are location, location, location. This can apply to herbicide trait technologies as well. Knowing what crops and plants are nearby can make a world of difference to farmers. Retailers can help their customers place herbicide-trait technologies where they’ll have the most opportunity to deliver maximum returns.

“Farmers need to consider field placement,” says Dan Puck, Enlist field specialist. “They should pick locations that allow them to get the maximum benefits from the herbicide traits in the varieties they plant. In most cases, this involves planting these traits in fields where they can use herbicides that provide the best control of problem weeds.”

Puck suggests placing Enlist E3 soybeans in fields that have resistant or tough-to-control weeds. The ability to apply Enlist One® and Enlist Duo® herbicides on top of these varieties will help handle these difficult weeds.

“Using the Enlist trait in areas near compatible crops helps ensure a farmer is able to use the best herbicide for the job,” Puck says. “Crops such as non-Enlist soybeans, corn, wheat, alfalfa and peanuts are compatible with Enlist herbicides.”

Compatible crops are those that are not listed as susceptible crops on Enlist herbicide labels. Puck emphasizes there are no wind direction restrictions when spraying near these compatible crops.

“No field separation is required,” he says. “You can apply right up next to any of these crops.”

Retailers can help farmers set up their weed control programs.

“Retailers and their customers should discuss each field to come up with weed control solutions,” Puck says. “The first step is to identify the weeds that are causing problems. Then pick a trait package that allows the use of herbicides effective against those weeds. Finally, take a holistic approach to put together a program that controls those weeds from preplanting through harvest.”

Using multiple herbicide modes of action is the best tactic for immediate control of weeds as well as limiting the development of higher populations of resistant and hard-to-control weeds. Take a prescriptive approach to weed control based on weed spectrum and pressure.

Discuss your customers’ needs and help them find the solutions that offer the best opportunity for weed control success.

To learn more about the Enlist weed control system, visit Enlist.com or use the Enlist Ahead resource. Also check out the YouTube channel or Twitter at @EnlistOnline.

Farmers will gain if retailers help them plan where to place herbicide-trait technologies to get the maximum benefits.

™®Trademarks of Dow AgroSciences, DuPont or Pioneer, and their affiliated companies or their 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 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. ©2019 Corteva.

A clean start leads to a strong harvest

As summer winds down and harvest approaches, there’s almost no better sight than a clean field. Smithboro, Illinois, farmer Allen Tompkins has been enjoying that sight all season, thanks to his weed control program for corn.

Tompkins uses 1 pint of SureStart® II herbicide and 1½ quarts of Resicore® herbicide as the main ingredients to keep his corn fields weed-free. It’s a tailored program Tompkins has used for the last five years on the advice of his retailer Jeremy Leininger of Woolsey Brothers Farm Supply in Vandalia, Illinois.

“We did the Resicore and SureStart program about five or six days after planting, and I can’t tell you if I’ve seen a weed out there,” Tompkins explains.

He says the strength and flexibility of this herbicide program kept weeds under control, even as the weather was out of control.

Tompkins says there was enough constant rain to keep him out of fields from the end of October 2018 until May 2019. Excessive moisture early in the season can make weed control more difficult. Despite planting late, Tompkins noticed clean fields throughout the season because of his powerful weed control program. From his experience, the cleaner the field, the easier the harvest.

“If you get a super weedy field, there are always weeds that are getting wrapped up in your machinery,” he says. “You have to get out, dig everything out, and it’s just a really big pain to harvest. Clean fields just make everything go smoother. Not only are they aesthetically pleasing, but they’re a lot more pleasing when you’re in the seat of the combine.”

To learn how SureStart II can help keep your customers’ fields clean for an easier harvest, visit SureStartII.com.

Illinois farmer Allen Tompkins uses SureStart® II herbicide and Resicore® herbicide to keep his corn fields clean. This photo was taken in July 2019.

™®Trademarks of Dow AgroSciences, DuPont or Pioneer, and their affiliated companies or their respective owners. Resicore 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. © 2019 Corteva.

During a rushed harvest, don’t skip these nitrogen steps

Harvest will likely be rushed this year as a result of the planting delays this spring. This means a shorter window in which to gather crops and prepare fields for next year. With this time crunch, your customers may overlook or forget some basic best practices for fall operations. In the case of nitrogen application, these best practices can make the difference between a boosted 2020 yield and loss of this valuable input.

With that in mind, if soil conditions and weather allow for fall applications on your customers’ fields, now is a good time to review best practices to maximize nitrogen-related success.

Fall application best practices

When it comes to fall application, there are several do’s and don’ts to consider.

  • Do’s
    • Apply only anhydrous ammonia or manure fertilizer in fall.
    • Apply after Oct. 1, but only if temperatures are cool enough.
    • Apply to soil that is 50 F 4 inches below the surface. You want soil that is 50 F, or lower, but not freezing.
    • For clay soils, apply half the nitrogen in fall and half in spring.
  • Don’ts
    • Don’t apply if it’s raining.
    • Don’t apply to sandy soils or in fields prone to spring flooding.
    • Don’t apply if the ground is frozen; the nutrients won’t absorb.

Most of all, be sure to apply a nitrogen stabilizer
Nitrogen has a long time to wait between fall application and spring crop uptake, so you’ll want to protect it with a nitrogen stabilizer to ensure it’s still in the soil come spring. A nitrogen stabilizer, such as N-Serve® for anhydrous ammonia and Instinct® for liquid manure, protects fall-applied nitrogen from leaching and denitrification in warming spring soils. This is important because it keeps nitrogen in the root zone during critical crop growth periods and doesn’t leave your farmers’ costly investment vulnerable to loss.

In all, adhering to these best practices can help postharvest nitrogen application be a success and can help maximize 2020 yield goals.

Visit NitrogenMaximizers.com to learn more about protecting farmers’ nutrient investments this fall. While there, you can also use the Profit Calculator to see how N-Serve and Instinct can impact your bottom line come harvest.

If the weather and soil are right for it, a fall nitrogen application is a good idea.

™®Trademarks of Dow AgroSciences, DuPont or Pioneer, and their affiliated companies or their 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. © 2019 Corteva.

Nitrogen stabilizers: A refresher course

It’s no secret nitrogen is one of the most important nutrients for a corn crop. Once nitrogen is lost, corn plants themselves may not be far behind. What seems to be a bit more secretive, or at least mysterious, is how nitrogen stabilizers work to keep as much of the nutrient as possible available for those plants.

It all comes down to simple science (well, simple for the scientists anyway; it takes just a little more explaining for the rest of us).

Corn uses nitrogen in two forms: ammonium and nitrate. Ammonium is preferable to corn,   because it’s easier for plants to absorb and it’s less susceptible to loss. Nitrate is more easily susceptible to loss via leaching and denitrification. Unfortunately, there are strains of bacteria that convert ammonium into nitrate to use for their own nutrients.

Corteva Agriscience’s line of nitrogen stabilizers, called nitrogen maximizers, includes N-Serve® and Instinct®. Both products work below the soil to slow down those bacteria, ensuring the nitrogen can stay in ammonium form longer. The maximizers extend the ammonium’s useful life for up to eight additional weeks, keeping nitrogen near the corn’s roots for when the plant is ready to absorb it.

The result is that the corn crop can get the maximum out of the farmer’s nitrogen application and the farmer, in turn, can get the maximum out of his or her investment, leading to a profitable yield.

With an extremely rainy spring across much of the Corn Belt and with planting being significantly delayed, nitrogen is especially vulnerable to loss this season. So, it’s especially important to ensure your customers’ investments are as safe as possible. Nitrogen maximizers can help.

And as you and your customers look ahead to fall nitrogen applications, onward to 2020 planting, it’s a good idea to keep this information top of mind. To learn what nitrogen maximizers can do for your clients’ crops, visit NitrogenMaximizers.com.

corn roots

Nitrogen maximizers keep nitrogen ready for corn’s roots

™®Trademarks of Dow AgroSciences, DuPont or Pioneer, and their affiliated companies or their 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. ©2019 Corteva

Strike out weeds with multiple herbicide modes of action

On a baseball field, few pitchers can keep hitters at bay throwing only one pitch. The most successful pitchers know how to change things up and keep hitters off balance. The same concept applies in farmers’ fields when it comes to weed control.

Successful weed control – both now and in the future – depends on attacking weeds with multiple herbicide modes of action. Retailers can help their customers develop smart game plans and adopt weed management technologies that allow them to keep weeds off balance and in check all growing season long.

The key? Develop a program approach that takes advantage of different herbicide modes of action. For instance, the Enlist weed control system is designed for burndown applications, preemergence residual applications and postemergence applications enabling the use of three or more modes of action to every field. Helping customers identify and use multiple modes of action gives them the opportunity for clean, weed-free fields.

Cover all the bases
A good weed control program starts will a clean field at planting. Burndown applications are important, even when weather issues delay planting. Retailers can help customers by recommending effective burndown herbicides such as Elevore®, Enlist One® or Enlist Duo® herbicides.

After planting, preemergence herbicides can add another mode of action. This can pick off weeds that have escaped or resisted the burndown treatment. Throwing a curve ball at weeds can subdue them and help the crop get off to a good, strong start.

“We need to get residual herbicides on the crop to suppress weeds, even when weather may tempt us to skip our preemergence applications,” says Shawna Hubbard, Trait Herbicides Product Manager for Corteva Agriscience, Agriculture Division of DowDuPont. “Be consistent in using appropriate rates for weed pressure in the field. This ensures we’re helping prolong control of weeds until we’re ready to make postemergence applications.”

Remind customers to consider preemergent herbicides that offer solid residual activity AND offer a different mode of action than their burndown or postemergence herbicides. For instance, Sonic® herbicide offers two modes of action while Trivence® herbicide delivers three modes of action.

A good scouting report
Once the crop has emerged, farmers need to scout their fields and act promptly when weeds begin to appear. Follow label directions; however, it’s generally best to hit weeds when they’re small and more likely to succumb to the postemergence treatment.

Timing is critical to maximize control of any postemergence application. Make sure customers are basing decisions on the size of the weeds and not the calendar alone.

“Sometimes, we may need to make an initial postemergence herbicide application earlier than we had planned,” Hubbard says. “With Enlist One or Enlist Duo herbicides, farmers should apply when weeds are no more than 6 inches tall.”

Get the bullpen ready
If you need to follow up with a second postemergence application due to a later flush of weeds, the Enlist weed control system gives you flexibility. The wider application window helps hit weeds when they are vulnerable. In addition, both Enlist herbicides feature 2,4-D choline with inherently low volatility. For two modes of action, choose either Enlist Duo with glyphosate or tank mix Enlist One with glufosinate.

Farmers who learn to change up their herbicide modes of action can keep striking out weeds all summer long. The result can be a sweet victory celebration at harvest.

Learn more about the Enlist weed control system at Enlist.com or by using the Enlist Ahead resource. Also check out the YouTube channel or Twitter at @EnlistOnline.

Using an array of herbicides that offer multiple modes of action goes a long way in producing a farmer’s “field of dreams.”

™®Elevore, Enlist Duo, Enlist One, Sonic and Trivence are trademarks of Dow AgroSciences, DuPont or Pioneer, and their affiliated companies or their 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 are the only 2,4-D products authorized for use with Enlist crops. Consult Enlist herbicide labels for weed species controlled. Sonic 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. ©2019 Dow AgroSciences LLC

Q&A: Herbicide resistance in the Upper Midwest

Herbicide-resistant weeds are top threats to corn and soybean yield potential. Jeff Moon, market development specialist with Corteva Agriscience, Agriculture Division of DowDuPont, recently shared insights on the state of resistant weeds and herbicide options. Moon works with retailers and territory managers with Corteva Agriscience in Minnesota and Wisconsin. Read the Q&A below for Moon’s advice to control resistant weeds this season.

  1. What are the top three herbicide-resistant weeds affecting corn and soybean farmers in your area?
    Waterhemp, giant ragweed and lambsquarters, in that order. Waterhemp is in the pigweed family, which has known resistance issues, so it seems to be the focus of conversations right now.
  2. Which herbicide-resistant weeds have most recently shown up?
    The further west you go, kochia becomes an issue. We’re also having discussions about Palmer amaranth moving in and the concerns about that. In the heart of corn and soybean country, the herbicide-resistant weeds we mostly see are waterhemp, giant and common ragweed and lambsquarters.
  3. When new resistance is found in your area, what is the first step to combating it?
    It starts with a discussion between the retailer and farmer. They both pay attention to local conditions, agronomy news and university research. Farmers are on the look-out for new threats and will make an adjustment if needed. Before changing products, they might just tweak their current program to make it better. This means they might change herbicide rates or if they’re doing one pass, they’ll adjust to a two-pass or change the tank mix.
  4. Which herbicides are particularly effective on these herbicide-resistant species?
    We are fortunate to have several residual and burndown products from Corteva Agriscience, Agriculture Division of DowDuPont, that fit the way growers want to farm.

    If your customers are using a multi-product approach in corn, one of the best ways to control resistant weeds is to use SureStart® II herbicide or Resicore® herbicide pre- or postemergence. I’ve seen farmers have success putting Surpass® NXT herbicide or Keystone® NXT herbicide down first, then use SureStart II or Resicore over the top on the second pass to control remaining weeds and add a residual layer. This is a great one-two punch to get corn to canopy.

    In soybeans, it starts with a strong preemerge. Sonic® and Surveil® herbicides are great options to control broadleaf weeds early. In a burndown situation, DuPont Enlite® herbicide can burndown emerged weeds and provide residual activity. Another burndown option is Elevore® herbicide, which prevents regrowth of many resistant weeds, including marestail. Elevore has a low use rate and fits well in reduced or no-till systems.

Talk with your local territory manager from Corteva Agriscience or go to Corteva.US to learn more about corn and soybean herbicides that can help your customers control herbicide-resistant weeds.

™®Trademarks of Dow AgroSciences, DuPont or Pioneer, and their affiliated companies or their respective owners. Keystone NXT is a Restricted Use Pesticide. Keystone NXT is not registered for sale, distribution or used in all states. Elevore, Resicore, Sonic, SureStart II, Surpass NXT and Surveil are not registered for sale or use in all states. Keystone NXT, Resicore, SureStart II and Surpass NXT are not registered 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. ©2019 Dow AgroSciences LLC