Preparation makes herbicide application more efficient and effective

Jonathan Siebert, Ph.D
Enlist field sales leader
Dow AgroSciences

Jonathan Siebert, Ph.D.

Applicators who follow basic principles can make their herbicide applications more effective, efficient and on target. From sprayer preparation to cleanup, diligence pays big dividends. Take the time to address a few important steps to save time, money and headaches while getting the greatest performance and value from the herbicides you apply.

The Enlist weed control system allows growers and applicators to use Enlist Duo® herbicide in corn and soybeans, which can help simplify postemergence application efforts. Enlist Duo is not yet registered for use on Enlist cotton.

It’s critical to follow label directions and be aware of neighboring crops and sensitive areas. Pay attention to wind speed and direction as well as adhere to product buffer requirements.

Know when to go
Timing is important for making the most positive impact with your postemergence herbicide application. Be aware of the crop stage and treat weeds when they’re small — preferably under 4 inches tall. Monitor the weather and try to make applications in as timely a manner as possible. When you do get into the field, it’s important to keep the boom height at the lowest approved setting to minimize drift potential.

Of course, it’s important to recommend herbicides to growers who will control the weeds that are troubling a specific field. For instance, growers facing tough-to-control or glyphosate-resistant weeds need a herbicide that can handle those weeds. Enlist Duo, which combines glyphosate and new 2,4-D choline, offers two modes of action to control a long list of troublesome weed species in Enlist crops.

If you’re mixing other products in the tank, make sure they’re compatible with the herbicide and that you’re using nozzles that are approved for all products you’re applying. The only permitted tank-mix partners for Enlist Duo are listed at EnlistTankMix.com.

Select appropriate nozzles
Nozzles are not designed to last the lifetime of a sprayer. Each brand and model has a different effective life span. Make sure the nozzles you use are appropriate for the herbicide you’re applying. For instance, the label for Enlist Duo lists 23 nozzles with approved spray pressure ranges.

With a wide array of approved nozzles, Enlist Duo® herbicide provides growers some added flexibility. You may be able to select a nozzle that’s appropriate for multiple purposes. This can save some time during the busy application season.

When applying Enlist Duo, adjust spray pressure to an approved setting to ensure adequate plant coverage and to minimize drift potential.

Cleaning sprayer equipment
Cleanup is extremely important to avoid unintentional contamination of your next chemical load. Most applicators understand the importance of tank cleanout. Make sure to follow product label directions on tank cleanout after herbicide application.

But don’t stop with the tank: Make sure to clean hoses, filters, screens and nozzles. Residue can collect in tiny spaces in these components. These can be easy to overlook, but neglecting them can lead to damage of susceptible crops when you enter another field.

Applicators can be more successful with a postemergence herbicide application when they prep their equipment, choose nozzles carefully, monitor weather and growing conditions, follow recommended application timing and thoroughly clean their entire sprayer components. It can help save time and money while providing peace of mind.

Visit Enlist.com to learn more about the latest herbicide technology and understand the benefits of the Enlist weed control system.

herbicide application

®™DOW Diamond, Enlist, Enlist Duo and the Enlist Logo are trademarks of The Dow Chemical Company (“Dow”) or an affiliated company of Dow. Enlist Duo herbicide is not yet registered for use on Enlist cotton. Enlist Duo 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. ©2016 Dow AgroSciences LLC

Instinct® nitrogen stabilizer wins U.S. EPA Presidential Green Chemistry Award

Green Chemistry iconThe U.S. Environmental Protection Agency (EPA) awarded Dow AgroSciences a Presidential Green Chemistry Challenge Award for the company’s achievement in nitrogen stabilization. Dow AgroSciences is the only agriculture company to receive the award this year.

The award program promotes environmental and economic benefits of developing and using novel green chemistry. Dow AgroSciences was recognized for Instinct® nitrogen stabilizer. Instinct and the active ingredient, nitrapyrin, were developed to help growers maximize yield potential by reducing the loss of nitrates into the environment.

“Dow AgroSciences is focused on the importance of environmental stewardship and fertilizer efficiency,” says Jason Moulin, nitrogen stabilizers portfolio marketing leader, Dow AgroSciences. “Using a nitrification inhibitor like Instinct keeps more nitrogen available in the root zone of crops, which reduces the escape of nitrates into groundwater and greenhouse gases into the atmosphere.”

Studies with nitrapyrin show soil nitrogen retention increased by 28 percent and nitrogen leaching decreased by almost 16 percent. Instinct and N-Serve® nitrogen stabilizer also have been proven to provide an average 6-bushel-per-acre increase compared with untreated acres by keeping more nitrogen available for crops to use.*

“Growers rely on our technology to have a positive impact on not only the environment but on their ROI at the end of the year,” Moulin says. “We are proud and excited to be recognized with this award and look forward to continuing to provide growers with tools that support environmentally beneficial farming practices.”

Instinct and N-Serve are the only nitrogen stabilizers on the market approved for registration by the U.S. Environmental Protection Agency. Dow AgroSciences has previously won four U.S. EPA Presidential Green Chemistry Challenge Awards for agricultural technology.

“Instinct is designed to make nitrogen fertilizers work more effectively for farmers and the environment,” says Tim Hassinger, president and CEO, Dow AgroSciences. “We build sustainability into our product development process, and this national recognition speaks to our focus and commitment to advance products that address pressing challenges in an environmentally sustainable way.”

Instinct® nitrogen stabilizer can be used with UAN, urea and manure to stabilize applied nitrogen. In fewer than five years, acres treated with stabilized nitrogen have grown more than fivefold. In 2014 alone, based on calculated adoption in the United States, it is estimated that use of Instinct use reduced carbon dioxide equivalent emissions by about 664,000 metric tons.

For more information about preventing nitrogen loss to maximize yield potential, visit NitrogenStabilizers.com.

*Average 6-bushel yield return vs. nontreated acres from 2008-15 across 800-plus trials.

®Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow. 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. ©2016 Dow AgroSciences LLC

Enlist Duo® herbicide provides application flexibility

Dow AgroSciences developed the Enlist weed control system to help growers manage tough-to-control and resistant weeds. With the Enlist system, growers can take advantage of multiple modes of action for improved weed control.

The Enlist system features Enlist Duo® herbicide, which combines glyphosate and new 2,4-D choline. Enlist Duo provides applicators and growers more application flexibility than M1691 herbicide (dicamba diglycolamine [DGA]), which Monsanto Company is proposing growers use on Roundup Xtend soybeans and cotton.

Advantages of new formulation
The formulation of Enlist Duo features Colex-D® technology, a proven breakthrough innovation that provides near-zero volatility, minimized potential for physical drift, low odor and improved handling characteristics.

Enlist Duo herbicide is 99 percent less volatile than a tank mix of glyphosate and dicamba DGA* and is up to 96 percent less volatile than 2,4-D ester. This means the product lands and stays on target.

Because of the minimized potential for physical drift, the label for Enlist Duo requires no buffer for neighboring soybean fields and only a 30-foot downwind buffer from sensitive areas. The proposed label for M1691 would require a 110- to 220-foot buffer, depending on the rate applied. Even at the lower rate, on an 80-acre field, growers may not be allowed to treat 25 percent of their acres.

Growers who apply Enlist Duo® herbicide can choose from almost two dozen nozzle options compared with only one for M1691. These additional options mean growers could be able to select nozzles that serve multiple purposes, eliminating the need to change between applications.

Nearly 50 tank-mix products are qualified for use with Enlist Duo herbicide, but the proposed label for M1691 states that it cannot be tank-mixed with other herbicides and lists no tank-mix partners. With Enlist Duo, growers have more flexibility to meet their application needs. In addition, tank cleanout after application with Enlist Duo requires a single-rinse with water when going into glyphosate-resistant corn or a triple-rinse with water if moving into other crops. The M1691 label requires a tank cleaner plus a triple-rinse for all crops.

See the accompanying chart for more features of Enlist Duo herbicide. To learn more about the Enlist weed control system, visit our YouTube channel, follow us on Twitter at @EnlistOnline or visit Enlist.com.

Enlist-Duo-Advantages-Chart

®™DOW Diamond, Colex-D, Enlist, Enlist Duo and the Enlist Logo are trademarks of The Dow Chemical Company (“Dow”) or an affiliated company of Dow. Roundup Xtend is a trademark of Monsanto Technology LLC. Enlist Duo herbicide is not yet registered for use on Enlist cotton. Enlist Duo 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. ©2016 Dow AgroSciences LLC

Control herbicide-resistant weeds differently than in the past

Herbicide-resistant weeds continue to spread across the Midwest, forcing growers to find new ways to control them. Common weeds, such as marestail, waterhemp and Palmer amaranth are particularly tough, but not impossible, to manage.

One of the most effective ways to manage and prevent herbicide-resistance is to use multiple modes of action. Resicore herbicide, new this season, brings a novel formulation of three modes of action to your customers’ fields.

Acetochlor

  • Mode of action: Seedling shoot growth inhibitor
  • Site of action: Group 15 long-chain fatty acid inhibitor
  • Controls weeds by inhibiting the growth of seedling shoots

Mesotrione

  • Mode of action: Pigment inhibitor
  • Site of action: Group 27 HPPD inhibitor
  • Selective herbicide absorbed by shoots and roots of weeds and translocated

Clopyralid

  • Mode of action: Growth regulator
  • Site of action: Group 4 synthetic auxin
  • Synthetic auxins interfere with plant growth by disrupting hormone balance and protein synthesis

For more information about this novel formulation of active ingredients, visit PowerOverWeeds.com or contact your Dow AgroSciences sales representative.  

®™Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow. Resicore is not registered for sale or use in all states. Resicore is 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. ©2016 Dow AgroSciences LLC

 

Poll results: Volatile input prices lead retailers’ most critical business issues

In each issue, you are invited to answer a poll question about various crop protection topics. Your answers provide valuable insights to the challenges you encounter. Here is a look at the results from recent poll questions.

This spring, readers said volatile input prices, managing cost positions and inventory, and attracting new customers were the top three issues facing their businesses.

Chart: What are your top three most critical business issues?

Fertilizer is a grower’s most expensive input investment and growers are seeking ways to protect it. Forty-nine percent of Inputs & Insights readers said their customers use a nitrogen stabilizer because it protects their fertilizer investment, and 29 percent said it gives their customers peace of mind that nitrogen is available when it’s needed. Instinct® II and N-Serve® nitrogen stabilizers are two solutions available to help protect fertilizer investments and keep nitrogen available in the root zone for crops to use.

Chart: What is the most common reason your customers use a nitrogen stabilizer?

Waterhemp continues to top the list of the most troublesome weeds along with marestail and Palmer amaranth. For control of waterhemp and many other high-anxiety weeds, Dow AgroSciences recommends using a program approach that starts with preemergence, residual herbicides followed by timely postemergence applications, including Resicore and SureStart® II herbicides in corn, Sonic® and Surveil® herbicides in soybeans, and Enlist Duo® herbicide as part of the Enlist weed control system in both corn and soybeans.

Chart: Which weed are your customers most worried about in 2016?

We look forward to gathering insights from each issue and invite you to take this month’s poll. For more information about Dow AgroSciences crop protection products, please contact your Dow AgroSciences sales representative or visit dowagro.com.

®™Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow. Enlist Duo, Instinct II, Resicore, Sonic, SureStart II and Surveil 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. Do not fall-apply anhydrous ammonia south of Highway 16 in the state of Illinois. Always read and follow label directions. ©2016 Dow AgroSciences LLC

Manage weeds throughout the season

With today’s fluctuating commodity prices, growers continue to evaluate the amount spent on inputs and weigh the profit margin that accompanies their expenses. In soybeans, where postemergence herbicide options are limited, growers cannot afford to skip a preemergence herbicide.

“If a preemergence herbicide is applied at or near planting, you should know within a couple of weeks after the activating rainfall if it’s working or not,” says Jeff Ellis, Ph.D., field scientist, Dow AgroSciences. “Especially if you applied the full rate, growers expect at least between four to six weeks of residual control.”

This season, growers who received abundant rainfall may have felt rushed to get soybeans planted and were unable to apply a preemergence herbicide. While this situation is common, it should be avoided to reduce the risk of unwelcome weeds and prevent potential yield loss at the end of the season.

field evaluationIf your customers see breakthrough weeds in their fields because they were unable to make a preemergence herbicide application, there are two ways to manage them, Ellis says.

  1. Remove weeds that have emerged and evaluate them. This will help your customers choose a proper postemergence herbicide that has activity on a specific weed.
  2. Incorporate a postemergence herbicide program that includes residual control to prevent additional weeds from emerging later in the season.

Sonic® and Surveil® preemergence herbicides are proven to provide long-lasting residual control of numerous high-anxiety weeds, such as waterhemp, ragweed, Palmer amaranth and marestail. For postemergence weed control, Durango® DMA® and FirstRate® herbicides can be tank-mixed or applied sequentially to attack and prevent many weeds, including glyphosate-tolerant/resistant biotypes of common ragweed, lambsquarters and marestail.

For more information about keeping soybean fields clean from plant to harvest, visit BattleWeeds.com and contact your Dow AgroSciences sales representative.

®Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow. Durango DMA, Sonic and Surveil are 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. ©2016 Dow AgroSciences LLC

Act quickly to control waterhemp

Ridding cornfields of the yield-limiting weed waterhemp requires an early action plan.

A slender plant with multiple branches and long, narrow leaves, waterhemp’s height can range from 4 inches to 12 feet. It is identifiable by its smooth, hairless and glossy leaves that vary in color from a bright red or pink to emerald green. An annual weed, waterhemp is a member of the pigweed family. As such, it is a prolific seed producer, yielding at least 250,000 seeds per plant.

Identifying waterhemp correctly can be difficult because it looks similar to Palmer amaranth and other pigweed species in early growth stages. Waterhemp’s first true leaves are generally longer and more lance-shaped than other pigweeds.1

palmer-amaranth-waterhemp

The crop-competitive weed has developed documented resistance to six classes of herbicides in the past 23 years, including triazines, ALS inhibitors, PPO inhibitors, glyphosate, 2,4-D and HPPD inhibitors.

Aggressive tillage and a program approach using preemergence herbicides followed by postemergence herbicides with multiple modes of action is the best strategy to control waterhemp. Resicore herbicide offers a novel formulation of three leading active ingredients and three modes of action for residual control of waterhemp, even those resistant to glyphosate, atrazine or ALS herbicides.

For more information about controlling waterhemp and many other weeds that can consume your customers’ cornfields, visit PowerOverWeeds.com.

1Nordby, D., B. Hartzler, and K. Bradley. 2007. Biology and Management of Waterhemp. https://www.extension.purdue.edu/extmedia/bp/gwc-13.pdf

®™Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow. Resicore is not registered for sale or use in all states. Resicore is 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. ©2016 Dow AgroSciences LLC