Monthly Archives: February 2016

Dow AgroSciences introduces a powerful herbicide for 2016 season

Luke Peters
Product Manager, Corn Herbicides
Dow AgroSciences

luke-peters-post

The U.S. Environmental Protection Agency (EPA) has approved the registration of Resicore herbicide, which will be available for growers this season. Resicore gives your customers a powerful new way to eliminate herbicide-resistant weeds and protect yield potential.

Resicore is different from other premixes on the market because it has three active ingredients growers have never seen together before in a single product. The novel formulation has the right balance of active ingredients for superior weed control deep into the growing season.
Your customers face difficult weed control issues today, and they’re looking for the most powerful product they can find. The three active ingredients in Resicore — acetochlor, mesotrione and clopyralid — provide three nonglyphosate and nonatrazine modes of action to help growers manage herbicide resistance by controlling weeds in multiple ways.

With more weeds able to withstand glyphosate-only applications, growers rely on multiple modes of action and residual control they can trust. Resicore offers that power they need in a single product and provides control of waterhemp, giant ragweed, Palmer amaranth and more than 70 other weed species growers deal with each season.

resicore_logoResicore can be applied preplant to early postemergence and can be used with conventional, reduced- or no-till corn systems. It is tank-mix-compatible with atrazine, glyphosate and other corn herbicides, giving your customers the flexibility they need to customize their program to current conditions and weed pressure.

For more information, visit PowerOverWeeds.com and 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

Weed control to fit every operation

Growers have a lot to worry about as spring planting draws near. Help ease that worry by recommending a weed control tool that offers the flexibility to fit in any soybean field.

SonicWhether your customers have conventional, reduced- or no-till soybean fields, Sonic® herbicide offers the flexibility to provide trusted weed control in any system. Sonic contains two modes of action to control weeds multiple ways, effectively managing weed resistance to protect soybean yield potential.

Watch how grower Scott Johnson uses Sonic in his Minnesota soybeans to control his most difficult weeds, including ragweed and lambsquarters, throughout the season.

“Sonic is a good fit in our area,” Johnson says. “One, because of the weed control, but I also think it is going to help keep glyphosate-resistant weeds away from our area. The longer we can do that, the better off we are.”

For more information on how Sonic can fit in your customers’ operations, visit BattleWeeds.com.

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

Temperature, rainfall can impact spring-applied nitrogen

As you reflect on the spring weather in 2015, you may be unpleasantly reminded of excessive rainfall that swept through the Midwest, leaving puddles in cornfields and customers concerned about nitrogen loss.

Seasons with excessive rainfall can cause headaches for growers who opted out of using a nitrogen stabilizer to protect their fertilizer investment. Excessive rainfall can mean nitrogen is more susceptible to loss due to nitrate leaching into the groundwater. Using Instinct® II or N-Serve® nitrogen stabilizer will help prevent nitrate leaching during rainy seasons and keep nitrogen in the root zone, where corn needs it most.

Field trials from recent years have proven that Instinct II and N-Serve can provide an average 6 bushels-per-acre increase compared with untreated nitrogen.1 In spring 2015, which was stricken with excessive rainfall, one on-farm trial displayed a double-digit yield increase with the application of Instinct II. Shown in the chart below, spring-applied UAN stabilized with Instinct II resulted in a 16.7 bu./A increase over acres without a nitrogen stabilizer. In addition, the green and gray boxes in the chart show that significantly more nitrogen was kept available to corn stabilized with Instinct II compared with untreated corn from May through July.

instinct-chart
Corn uses nitrogen in two forms — ammonium (NH4+) and nitrate (NO3). This chart shows that more nitrogen was kept available to corn stabilized with Instinct® II nitrogen stabilizer compared with untreated corn from May 2015 through July 2015.

Pay attention to temperature, timing

Rain is not the only factor that can affect nitrogen. Temperature can also lead to nitrogen loss. There is increased opportunity for loss when temperatures are warmer than 50 F. Corn needs the most nitrogen support up to 75 days after emergence, so as the weather gets warmer and the crop emerges, make sure nitrogen is available when the crop needs it.

Using a nitrogen stabilizer can help your customers protect their largest input investment regardless of weather conditions this spring. Growers applying UAN, urea or manure can use Instinct II to protect their fertilizer investment, while N-Serve is available to growers applying anhydrous ammonia.

Reduce your customers’ concern about nitrogen loss by recommending Instinct® II or N-Serve nitrogen stabilizer. For more information, visit NitrogenStabilizers.com.

1Average 6-bushel yield return in spring stabilization vs. nontreated from 2008-14 across 100-plus trials.

®Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow. Instinct II 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

A 2016 weed control plan can help growers prepare for thorny challenges

When planning herbicide strategies, especially in areas with significant resistant weed populations, you can help growers develop a program approach, starting with broad-spectrum soil residual herbicides offering multiple modes of action. This early season control allows growers to plant their entire crop and then come back with timely applications of effective postemergence weed control solutions.

Remind growers it’s critical to scout fields and make applications when weeds are small and actively growing. Last year pointed out the value of controlling weeds early in the season.

In 2015, many growers experienced heavy weed pressure, mainly because of excessive rainfall and wet field conditions that delayed or prevented application of residual herbicides. This led to substantial weed populations that produced a multitude of seeds that may emerge in 2016.

The first year after a big flush of weeds is the most challenging. Even one year of poor weed control can be costly to overcome. That’s why it’s important to build and carry out a comprehensive weed control program. Growers should understand the weed spectrum in each field and build a plan designed to control weeds early. You can help growers put a weed control plan in place that gives them options to adjust to changes such as weather delays or weed escapes.

Preemergence herbicide applications — including a burndown — create a clean field at planting and offer control of early season weeds, eliminating weed competition during the crop’s critical early growth. In areas with significant resistant populations, growers can adopt a program approach that starts with broad-spectrum soil residual herbicides offering multiple modes of action. Sonic® or Surveil® herbicide in soybeans and Resicore or SureStart® II herbicide in corn are products to consider for early residual control.

The Enlist™ weed control system includes timely postemergence applications of Enlist Duo® herbicide at the full label rate. This provides an additional mode of action beyond a glyphosate-only program to help control the toughest weeds, including resistant and hard-to-control species.

Enlist corn, soybeans and cotton are tolerant to Enlist Duo herbicide, a proprietary blend of glyphosate and new 2,4-D choline. (Enlist Duo is not yet registered for use on Enlist cotton.)

With two modes of action, Enlist Duo helps control resistant and hard-to-control weeds. Be sure to follow label directions for application. Full label rates will help control the toughest weeds, including Palmer amaranth, marestail and waterhemp.

Help growers who turn to you for advice by recommending effective weed control strategies. When challenging weeds are present in a field, growers who use a system approach will be better able to control those weeds while preserving valuable herbicide tools for future crops.

Visit the Enlist YouTube channel, follow on Twitter at @EnlistOnline or visit Enlist.com for more information on developing a program approach to weed control. You also can learn more about the latest herbicide-tolerant trait technology to help manage hard-to-control and resistant weeds this year.

weather-challengesWeather challenges in 2015 illustrate the value of building and following a program approach to weed control. Using the Enlist™ weed control system, including timely postemergence applications of Enlist Duo® herbicide at full label rates, will help control the toughest weeds.

®™DOW Diamond, Enlist, Enlist Duo, Resicore, Sonic, SureStart and Surveil 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, Sonic, Surveil 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 for sale or use in your state. Always read and follow label directions. ©2016 Dow AgroSciences LLC

Don’t ignore the winter weed complex

The winter weed complex can have a significant impact on your customers’ fields. Scout fields in early spring to detect populations of winter weed species such as chickweed and marestail and control them early on so they do not become a larger threat later in the season.

Left uncontrolled, marestail can compete with soybean crops for vital nutrients and moisture during early germination periods. Marestail, which is believed to be the first glyphosate-resistant weed in a U.S. row-crop setting, can significantly reduce yield potential at harvest if not properly controlled in spring.

Growers can gain better weed control with a preemergence herbicide with residual activity to control troublesome weeds. A preemergence herbicide works to prevent weeds from competing with the crop at planting so soybeans get the strong start they need.

Using a preemergence herbicide such as Sonic® or Surveil® herbicide can extend the period of control to keep weeds small into the growing season. Sonic delivers exceptional broad-spectrum and long-lasting control to prevent weeds from emerging. Surveil, a new premix from Dow AgroSciences for the 2016 growing season, combines two powerful modes of action for highly effective control of today’s most troublesome weeds.

To learn about early season weed control, visit BattleWeeds.com or contact your local Dow AgroSciences sales representative.

preemergence control
Control weeds by using a preemergence herbicide such as Sonic® or Surveil® herbicide.

®™Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow. 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

Dow AgroSciences Preparing to Feature Exciting Products at Commodity Classic

Every year, ag professionals travel to Commodity Classic anticipating the opportunity to see and learn new things. Dow AgroSciences is proud to join the procession to New Orleans, March 3 to 5, for what’s sure to be a year of exciting and interesting exhibits.

At Commodity Classic, visit us at Booth 1235 to find out how Dow AgroSciences is Driving Farm Solutions. We’ll have experts available to talk to you about the newest products so you have more tools available to help growers overcome challenges.

You can learn about products such as the Enlist weed control system, which features new herbicide-tolerant traits and Enlist Duo® herbicide. Only Enlist Duo combines the proven performance of glyphosate and new 2,4-D choline. The Enlist system provides exceptional weed control in corn, soybeans and cotton.

Dow AgroSciences also will be featuring Resicore herbicide for corn, which features the power to control tough weeds with trusted residual activity deep into the growing season. Resicore herbicide contains a novel formulation of three proven active ingredients with three modes of action to control a broad spectrum of grass and broadleaf weeds.

Visitors also can learn about Sonic® and Surveil® herbicides for soybeans, Blackhawk® insecticide and two important nitrogen stabilizer products, N-Serve® for anhydrous ammonia applications and Instinct® II for UAN, urea and manure applications.

We hope to see many of you in New Orleans to enjoy the food, the weather, the music and, of course, all the attractions at Commodity Classic.

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®™Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow. Enlist Duo herbicide is not yet registered for use on Enlist cotton. Blackhawk, Enlist Duo, Instinct II, Resicore, Sonic and Surveil are 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. 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

Weed of the Month: Lambsquarters

  • Various types: Common1
  • Scientific name: Chenopodium album1
  • Grass or broadleaf: Broadleaf
  • Found in all states
  • Germination timing: Summer annual; emerges in the spring; sets seed in late summer/fall and dies2
  • Competitiveness: Common lambsquarters is a highly competitive weed. Michigan State University reports 13 percent yield loss in corn with one lambsquarters plant per 1½ feet of row and 25 percent yield loss in soybeans with less than one plant per foot of row.2

Fast facts:

  • Lambsquarters is a cool-season, early germinating annual broadleaf weed that can be most problematic in northern areas, says Scott Ditmarsen, field scientist, Dow AgroSciences. It’s important to scout for lamsbquarters early as it can be difficult to control with glyphosate alone and can grow more than 4 feet tall, if left uncontrolled. Identify lambsquarters by looking for a white, “frosted” appearance of upper leaves.
  • According to WeedScience.org, the first confirmation of triazine-resistant lambsquarters in the United States occurred in Michigan in 1975. Today, 22 states have reported resistant lambsquarters.

Resistance Statistics:*

Herbicide classes

*Resistance confirmation does not necessarily include all weeds and may vary among different areas of each state.

Weed management tips:

Ditmarsen says:

  • Early scouting of lambsquarters is important as it tends to germinate early in the spring under cooler conditions.
  • Lambsquarters is generally difficult to control with glyphosate, especially when it grows larger than 3 or 4 inches.
  • A program approach involving preemergence herbicides followed by postemergence herbicide applications is the most effective lambsquarters control strategy.
  • Lambsquarters can be difficult to control beyond 4 to 6 inches tall, so apply postemergence herbicides early for best results.

Dow AgroSciences weed control solutions:

Corn

SureStart® II herbicide
Resicore™ herbicide
Keystone® NXT herbicide
Keystone® LA NXT herbicide

FulTime® NXT herbicide
Surpass® NXT herbicide 
Durango® DMA® herbicide
Duramax® herbicide
Enlist Duo® herbicide, as part of the Enlist™ weed control system

Soybean

Sonic® herbicide
Surveil® herbicide
Durango® DMA® herbicide
Duramax® herbicide
Enlist Duo® herbicide, as part of the Enlist™ weed control system

Additional information:

More information can be found through these weed science resources:

1U.S. Department of Agriculture Natural Resources and Conservation Service. 2016. Plant Profile: Chenopodium album L. lambsquarters. http://plants.usda.gov/core/profile?symbol=chal7
2MSU Weed Science. 2016. Common Lambsquarters.msuweeds.com/worst-weeds/common-lambsquarters/

®™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, Enlist Duo herbicide, FulTime NXT, Keystone LA NXT, Keystone NXT, Resicore, Sonic, SureStart II, Surpass NXT and Surveil are not registered for sale or use in all states. FulTime NXT, Keystone LA NXT, Keystone NXT, Resicore, 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. Always read and follow label directions.  ©2016 Dow AgroSciences LLC