Monthly Archives: December 2014

Maintaining More Nitrogen in the Root Zone

By Eric Scherder
Field Scientist
Dow AgroSciences

eric-scherder

Over the past few years, there has been a lot of discussion about nutrient management plans or best management practices. At the same time, many universities across the Corn Belt have been discussing ways to improve nitrogen efficiency for corn production.

All of these aspects revolve around the 4R program approach promoted by The Fertilizer Institute. The program advocates for nitrogen management by promoting the right rate, right place, right source and right time.

In any of these approaches, a grower must know the production practice history of a field to determine an optimum nitrogen rate. A second aspect is monitoring what is going on during the year to account for nitrogen in the soil.

Data from our 2012-13 university trials, with liquid 28 percent or 32 percent UAN applied preemergence, help demonstrate the value of N-Serve® and Instinct ® II nitrogen stablizers on maintaining more nitrogen in the upper zero to 1 foot and 1 to 2 feet of the root zone early in the season to maximize yield.

The data from these 13 university trials demonstrate that Instinct nitrogen stabilizer, or Instinct II, keeps more nitrogen in the upper zero to 2 feet. That results in less nitrate (NO3-) that can be lost from the soil through leaching or denitrification.

From a corn grower’s perspective, maintaining more nitrogen in the upper root zone improves the opportunity to increase nitrogen efficiency and maximize yield opportunity. N-Serve and Instinct II are true nitrification inhibitors. Through grower strips trial testing and university testing, yield improvements can be measured each year, yet the yield increase ultimately is determined by how much nitrogen stress has been put on the corn crop.

Reducing leaching and denitrification also limits the amount of nitrogen that can escape into the groundwater or atmosphere and maximizes the yield potential of corn.

For more information on stabilizing nitrogen with Instinct II and N-Serve, visit NitrogenStabilizers.com.

®Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow. FulTime NXT, Keystone LA NXT and Keystone NXT are federally Restricted Use Pesticides. Duramax, Durango DMA, FulTime NXT, Keystone LA NXT, Keystone NXT, Instinct II, Sonic, SureStart II, Surpass NXT and Surveil Co-pack 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. FulTime NXT, Keystone LA NXT, Keystone NXT, SureStart II and Surpass NXT 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. Regulatory approvals are pending for Enlist cotton. Always read and follow label directions. ©2014 Dow AgroSciences LLC

For 35 Years, Illinois Retailer Has Trusted N-Serve® Nitrogen Stabilizer

Ed Logan of Logan Agri-Service, Inc., in Griggsville, Illinois, has been recommending N-Serve® nitrogen stabilizer to his customers since 1979. By using N-Serve, Logan has noticed yield increases and a consistent decrease in harvest moisture with fall and spring applications of nitrogen.

Watch this video to find out why Logan trusts N-Serve to keep nitrogen available to his customers’ corn crop when it’s needed most.

“We feel that N-Serve helps reduce the leaching that is caused in nitrogen, and that is protecting our groundwater supplies, not only for my generation, but also for future generations,” Logan says.

For more information on N-Serve, visit NitrogenStabilizers.com.

®Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow. FulTime NXT, Keystone LA NXT and Keystone NXT are federally Restricted Use Pesticides. Duramax, Durango DMA, FulTime NXT, Keystone LA NXT, Keystone NXT, Instinct II, Sonic, SureStart II, Surpass NXT and Surveil Co-pack 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. FulTime NXT, Keystone LA NXT, Keystone NXT, SureStart II and Surpass NXT 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. Regulatory approvals are pending for Enlist cotton. Always read and follow label directions. ©2014 Dow AgroSciences LLC

The Power of a Portfolio

Imagine the ideal crop next summer. What does it take to achieve that? Some factors are out of your control, such as the weather, but some are not.

The close of harvest across the Midwest means many growers and retailers are beginning to think about the coming spring. As you reminisce about the 2014 planting season, you might recall that untimely rainfall caused headaches for growers planning to apply a preemergence herbicide. We can’t predict next season’s weather, but we can offer guidance on preparing for next season’s corn and soybean crops.

Here are a few crop protection solutions to maximize the opportunity for your customers to reach optimum yield potential:

To control weeds on corn acres, SureStart® II herbicide provides flexible application timing from preemergence up to 11-inch corn. It controls more than 60 high-anxiety weeds through three nonglyphosate modes of action.

Optimize the yield potential of your corn crop by using Instinct® II nitrogen stabilizer. Instinct II protects your customers’ largest fertilizer investment by keeping applied nitrogen available in the root zone of corn plants when it’s needed most. Instinct II can be used with UAN, urea and liquid manure.

corn-crop

On soybean acres, Sonic® herbicide provides broad-spectrum control of many tough broadleaf weeds and grasses, including waterhemp, marestail and giant ragweed. Applied from preemergence up to three days postplant, Sonic keeps weeds small to maximize postemergence applications.

soybean-crop

The protection offered by Transform® WG insecticide and Cobalt® Advanced insecticide empowers growers to protect their yield potential as part of an effective insect management program.

With a unique mode of action, Transform WG controls soybean aphids with both contact and ingestion activity offering excellent residual control while being safe on beneficials.

Cobalt Advanced provides broad-spectrum insect control in corn, soybean, alfalfa and wheat. And research shows that growers can maximize yield potential by tank-mixing Cobalt Advanced with an effective fungicide.

For more information on these products, contact your local Dow AgroSciences sales representative.

®Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow. Cobalt Advanced, FulTime NXT, Keystone LA NXT and Keystone NXT are federally Restricted Use Pesticides. Cobalt Advanced, Duramax, Durango DMA, FulTime NXT, Keystone LA NXT, Keystone NXT, Instinct II, Sonic, SureStart II, Surpass NXT, Surveil Co-pack and Transform WG 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. FulTime NXT, Keystone LA NXT, Keystone NXT, SureStart II and Surpass NXT 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. Regulatory approvals are pending for Enlist cotton. Always read and follow label directions. ©2014 Dow AgroSciences LLC

Dow AgroSciences Announces Launch of Enlist Duo™ Herbicide in the U.S.

Select Growers to Participate in Stewarded Introduction of Enlist™ Corn, Seed Production of Enlist Soybeans

Dow AgroSciences announced it will launch its innovative Enlist Duo herbicide for the 2015 crop season. Enlist Duo is part of the Enlist Weed Control System, a herbicide-tolerant trait technology for corn and soybeans. The herbicide will provide new advantages for the management of hard-to-control and resistant weeds. It will be launched in conjunction with a stewarded introduction of Enlist corn and seed production of Enlist soybeans in 2015.

Enlist_Logo_Horz_TagAs resistant weeds have increased, so has grower demand for new solutions. Acres with resistant weeds doubled in the U.S. between 2009 and 2013, now numbering 70 million. Enlist Duo™, a proprietary blend of glyphosate and new 2,4-D choline, will be a powerful tool. It will control the toughest weed species in a long application window, protecting farmers’ crops and helping them maximize their yield.

The herbicide has also been engineered to offer benefits beyond weed control. With proven reductions in volatility and off-target movement, improved handling characteristics, and reduced odor, Enlist Duo with Colex-D™ Technology will be unique to the market.

“Enlist Duo will set a new standard in the marketplace for herbicides,” says Damon Palmer, marketing director for Dow AgroSciences’ U.S. Seeds Business. “We have made significant investments in existing and new assets to reliably supply high quality 2,4-D choline for Enlist Duo, and we are ready to meet the demand.”

Dow AgroSciences is finalizing plans in advance of the 2015 use season to sell Enlist Duo.

Stewarded Introduction for Enlist Corn Seed
Dow AgroSciences will conduct a stewarded introduction of Enlist™ corn seed in the U.S. in 2015. Participating farmers will access the benefits of the Enlist system in corn, while adhering to a thorough set of stewardship protocols and requirements.

Enlist corn will be managed throughout the season and at harvest as import approvals continue to be obtained. Isolation areas adjacent to Enlist corn fields will be required, and third-party audits will be conducted as an additional protective measure. Growers must agree that grain from Enlist corn will be fed on farm when harvested.

Farmers participating in the program will be engaged with Dow AgroSciences throughout the season as they steward the technology on their farms.

“We have had significant discussions with the agricultural community, including the National Corn Growers Association, the American Soybean Association, the grain industry and numerous farmers,” says Palmer. “This plan will enable American farmers to access the Enlist technology while respecting current import approval processes abroad.”

Seed Production for Enlist Soybeans under Dow AgroSciences’ Field Forward™ Program
Dow AgroSciences also announced it will move its Enlist soybeans one step closer to the farm gate by working with select farmers to experience the technology under its Field Forward™ program. The program provides a limited number of growers an opportunity to experience the company’s newest technologies before they are commercially available.

Farmers participating in the Field Forward program will grow Enlist soybean seed for Dow AgroSciences. Dow AgroSciences will manage the seed production throughout the season, including handling and storage after harvest.

Regulatory authorities in the U.S. deregulated Enlist corn and soybeans in September 2014, and registered Enlist Duo herbicide in October1. Enlist crops have been approved for import by many countries, and are in process for others.

“This is a robust, targeted plan,” says Paul Bertels, vice president of production and utilization, National Corn Growers Association. “It keeps American farmers competitive and provides access to new technology while respecting global grain markets.”

To learn more about the Enlist Weed Control System, visit our YouTube channel, follow us on Twitter at @EnlistOnline or visit Enlist.com.

1The U.S. Environmental Protection Agency (EPA) registered Enlist Duo herbicide for six states on October 15: Iowa, Illinois, Indiana, Ohio, South Dakota and Wisconsin. EPA is accepting comments until November 14, 2014 (30 days) on whether to register Enlist Duo in ten additional states.

®™ DOW Diamond, Enlist, and Enlist Duo are trademarks of The Dow Chemical Company (“Dow”) or an affiliated company of Dow. Enlist Duo 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.

Review Herbicide Programs for Improved Weed Control

This season started with a wet spring. Many growers faced herbicide-resistant weeds, such as marestail and waterhemp, that threatened soybean fields, says Joe Armstrong, field scientist, Dow AgroSciences. To control these high-anxiety weeds effectively in 2015, growers should evaluate their herbicide program by asking themselves a few questions:

When should I evaluate my herbicide program? The end of the growing season and late winter into early spring are ideal times to get in the field to scout for weeds. Scouting will help determine which weeds escaped, which weeds pose a new threat and which program can work best to control them.

Why is evaluating the season important? Timing is everything, and early control is key, Armstrong says. Evaluating a herbicide program well before planting can help growers plan ahead to keep fields weed-free at planting.

SonicHow can I improve my weed control program for next season? Adding a preemergence herbicide to a weed control program is vital. Because weeds can rob yield so early in the growing season, using a preemergence herbicide to reduce competition out of the gate is that much more important, Armstrong says. Sonic® herbicide controls herbicide-resistant weeds by using two nonglyphosate modes of action that provide broad-spectrum control to keep soybean fields clean throughout the growing season.

For more information on incorporating Sonic into soybean herbicide programs next season, visit SonicHerbicide.com or contact your local Dow AgroSciences sales representative.

®Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow. FulTime NXT, Keystone LA NXT and Keystone NXT are federally Restricted Use Pesticides. Duramax, Durango DMA, FulTime NXT, Keystone LA NXT, Keystone NXT, Instinct II, Sonic, SureStart II, Surpass NXT and Surveil Co-pack 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. FulTime NXT, Keystone LA NXT, Keystone NXT, SureStart II and Surpass NXT 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. Regulatory approvals are pending for Enlist cotton. Always read and follow label directions. ©2014 Dow AgroSciences LLC

Manage Herbicide Resistance Through Multiple Sites of Action

With more weeds continuing to become herbicide-resistant, it’s important now, more than ever, to ensure that your customers are rotating multiple sites of action in their weed control program to manage resistance.

Although sites of action and modes of action are terms that have been used interchangeably, there is a difference between the two. The site of action refers to the location within the plant where it is affected by the herbicide, while the mode of action describes how the herbicide is controlling the weed.

SureStart® II herbicide contains three nonglyphosate modes of action to control tough weeds, including waterhemp, marestail and giant ragweed.

Here are the three active ingredients in SureStart II, along with the correlating sites and modes of action:

  1. Acetochlor:
    • Site of action: long-chain fatty acid inhibitor (Group 15)
    • Mode of action: seedling shoot growth inhibitor
  2. Clopyralid:
    • Site of action: specific site unknown (Group 4)
    • Mode of action: growth regulator (synthetic auxins)
  3. Flumetsulam:
    • Site of action: ALS inhibitor (Group 2)
    • Mode of action: amino acid synthesis inhibitor

As weed resistance continues to spread across the Corn Belt, remind your customers about the importance of incorporating multiple sites of action into their weed control programs each year.

A full list of sites of action, modes of action, active ingredients and trade names can be found in the Corn and Soybean Herbicide Chart produced by the University of Wisconsin-Extension.

For more information on SureStart II, visit GetMoreTime.com or contact your Dow AgroSciences sales representative.

®Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow. FulTime NXT, Keystone LA NXT and Keystone NXT are federally Restricted Use Pesticides. Duramax, Durango DMA, FulTime NXT, Keystone LA NXT, Keystone NXT, Instinct II, Sonic, SureStart II, Surpass NXT and Surveil Co-pack 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. FulTime NXT, Keystone LA NXT, Keystone NXT, SureStart II and Surpass NXT 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. Regulatory approvals are pending for Enlist cotton. Always read and follow label directions. ©2014 Dow AgroSciences LLC

WEED OF THE MONTH: Marestail

Trends:

  • According to WeedScience.org, 24 states have confirmed glyphosate-resistant marestail. The most recent glyphosate-resistant marestail was reported in 2013 in Alabama and Wisconsin.
  • The germination window has expanded and now includes summer.5

Resistance statistics:

According to WeedScience.org:

    • Herbicide classes
    • Multiple resistance confirmed in:
      • MI:
        • Photosystem II inhibitors, PSII inhibitor (chlorotoluron)
      • OH:
        • ALS inhibitors, glyphosate
      • MS:
        • PSI electron diverter, glyphosate
      • DE:
        • ALS inhibitors, glyphosate

Marestail management tips:

Joe Armstrong, field scientist, Dow AgroSciences says:

  • Apply a residual herbicide to control marestail. Follow up with a fall application to keep fields clean going into winter.
  • A preemergence herbicide will open a wider window to apply a postemergence herbicide to control any remaining marestail.
  • Scout for marestail year-round and learn to identify it in the small rosette stage.

Dow AgroSciences weed control solutions:

Corn
SureStart® II herbicide
Keystone® NXT herbicide
Keystone® LA NXT herbicide
FulTime® NXT herbicide
Surpass® NXT herbicide
Durango® DMA® herbicide
Duramax® herbicide
Enlist™ Weed Control System

Soybean

Sonic® herbicide
Surveil™ Co-pack herbicide
Durango® DMA® herbicide
Duramax® herbicide

Enlist™ Weed Control System

Additional Information:

More information can be found through this weed science resource:

1Everman W., C. Sprague, S. Grower, and R. Richardson. 2010. An IPM Pocket Guide for Weed Identification in Field Crops.
2PLANTS Profile. United States Department of Agriculture Natural Resources and Conservation Service website. http://plants.usda.gov
3MSU Weed Science website. http://www.msuweeds.com/worst-weeds/marestail/
4Understanding and Managing Marestail. http://www.agprofessional.com/resource-centers/corn/news/understanding_and_managing_marestail_120009894.html
5University of Illinois Extension. Controlling Marestail (Horseweed) After Crop Emergence. http://web.extension.illinois.edu/state/newsdetail.cfm?NewsID=29274

®Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow. FulTime NXT, Keystone LA NXT and Keystone NXT are federally Restricted Use Pesticides. Duramax, Durango DMA, FulTime NXT, Keystone LA NXT, Keystone NXT, Instinct II, Sonic, SureStart II, Surpass NXT and Surveil Co-pack 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. FulTime NXT, Keystone LA NXT, Keystone NXT, SureStart II and Surpass NXT 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. Regulatory approvals are pending for Enlist cotton. Always read and follow label directions. ©2014 Dow AgroSciences LLC