Start the Season with Peace of Mind
Weed control is a critical component of successful crop production, as weeds can
reduce yields and lead to decreased profits for growers. Common ragweed,
waterhemp, Palmer amaranth and other problem weeds can emerge at any time
and if left uncontrolled, can devastate an entire soybean crop. It is important to
plan ahead and take a proactive approach to weed management instead of waiting
until weeds emerge.
According to the 2012 Ohio and Indiana Weed Control Guide, losses in U.S. crops
due to uncontrolled weeds exceed $8 billion annually, despite large expenditures
for weed control. Uncontrolled weeds compete with crops for water, nutrients and
sunlight, and have the potential to harbor insects and diseases, which can infest
the field and affect future crops.
Emerging soybean plants are especially susceptible to pests and weeds. Soil
moisture, light and nutrients are vital for soybean development, and if left
untreated, weeds rob soybean of those life-giving nutrients and lead to severely
decreased yield potential.
Studies led by Bryan
Young, Ph.D., at
Southern Illinois
University proved that
significant benefits can
come from using a preemergence herbicide
followed by a postTreated with Prefix
Untreated
emergence glyphosate
application. However,
application timing of
both the pre- and post-emergence herbicides is critical to the success of the earlyseason weed control program. When a pre-emergence herbicide was applied
before an application of glyphosate, the average yield was about 47 bu/A.
However, in fields that did not receive a pre-emergence treatment, yield declined
significantly. If glyphosate was applied when weeds were still 0- to 4-inches tall,
average yield was 44 bu/A. If glyphosate was applied later, when weeds were 4- to
8-inches tall, average yield was down to only 41 bu/A. Additionally, all fields that
did not receive the pre-emergence application also required a second glyphosate
treatment, meaning another trip across the field for growers.
According to the Iowa State University Extension, in addition to increased yield,
other benefits of using a pre-emergence herbicide include better time management
in the spring, a wider window of opportunity to make post-emergence treatments,
environmental stewardship and improved profitability. Additionally, pre-emergence
residual herbicides with multiple modes of action help reduce selection pressure on
weed populations and delay the development of herbicide-resistant weeds in
soybean.
Syngenta Solutions Offer Herbicide Diversity
Research has shown and anecdotal reports confirm that herbicide resistance (i.e.
glyphosate, ALS and PSII) is quickly spreading across the U.S. One method to
combat resistance is to apply products containing herbicides with different modes
of action through all soybean growth stages. In addition to protecting valuable
chemistries, implementing herbicide diversity offers several benefits including:
• Improved performance and flexibility with existing tools.
• Decreased weed density and reduced risk for developing herbicide
resistance.
• Yield protection and improved profitability.
For timely weed control in soybean, Syngenta offers several Resistance Fighter™
brand herbicide recommendations including:
Glyphosate-tolerant Soybean Herbicide Options:
• Prefix® followed by Touchdown Total® or Sequence®: Prefix, a nonglyphosate, non-ALS inhibiting herbicide option controls the most difficult
weeds in soybean, like common ragweed and waterhemp, both known to
be resistant to multiple herbicide modes of action. Prefix can protect
potential yield with up to five weeks of residual control of highly competitive
grass and broadleaf weeds, allowing a properly timed application of
Touchdown Total or Sequence herbicide post-emergence follow-up
treatment.
• Boundary® followed by Flexstar® GT 3.5: Boundary herbicide contains
two non-ALS inhibiting, non-glyphosate and non-PPO inhibiting chemistries
for managing tough weeds and grasses, including ALS- and glyphosateresistant weeds. Follow Boundary with Flexstar GT 3.5 for two herbicides
with additional modes of action, fomesafen and glyphosate, to keep fields
clean through harvest.
LibertyLink® Soybean Herbicide Options:
•
Prefix or Boundary followed by Liberty plus Dual Magnum®: Prefix and
Boundary provide strong non-glyphosate, non-glufosinate pre-emergence
weed control options for LibertyLink soybean systems and reduce selection
pressure on this emerging technology. Follow with a post-emerge
application of Liberty plus Dual Magnum herbicides to increase spectrum of
control and protect the longevity of LibertyLink technology.
For all of the latest soybean news from Syngenta, visit http://Soybeans.FarmAssist.com,
the one-stop location for everything soybean. And don’t forget to register for the Soybean
Insider to be delivered directly to your email at www.FarmAssist.com/SoyInsider. Follow
Syngenta on Twitter or Facebook.
For more information, visit www.Prefix-Herbicide.com or call the Syngenta Customer
Center at 1-866-SYNGENT(A) (796-4368).
©2012 Syngenta. Important: Always read and follow all bag tag and label instructions
before buying or using Syngenta products. The instructions contain important
conditions of sale, including limitations of warranty and remedy. All products may not
be registered for sale or use in all states or counties. Please check with your state or
local extension service before buying or using Syngenta products. Boundary®, Dual
Magnum®, Flexstar®, Prefix®, Resistance Fighter™, Sequence®, Touchdown Total®, the
Alliance Frame, the Purpose icon and the Syngenta logo are trademarks of a Syngenta
Group Company. Liberty® and LibertyLink® are registered trademarks of Bayer.