Wednesday, March 24, 2010

Early-season herbicide application controls weeds before they cause corn yield loss

Proactive weed management now can pay off in higher yields at harvest.


RESEARCH TRIANGLE PARK, N.C. (March 24, 2010) — This spring, Extension weed scientists across the country recommend that growers use an early-season herbicide with residual in order to get a jump on weeds and protect their corn crops.

In fact, that’s the standard recommendation weed scientists make each year. But it’s particularly sound advice for 2010, given the wild weather swings the past two years, when unpredictable weather prevented many corn growers from addressing weed problems in a timely fashion with post products.

“Beyond simply giving you a head start on weed control, an early-season herbicide application means you are protecting corn yield potential at your earliest opportunity,” says Jeff Springsteen, Bayer CropScience marketing manager for selective corn and soybean herbicides.

The company offers corn growers a complete portfolio of products for grass and broadleaf weed control, including Balance® Flexx pre-emergence corn herbicide, which prevents yield loss due to early-season weeds. It also reactivates, with just a half-inch of rain, to kill late-emerging weeds.

Balance Flexx contains the exclusive Crop Safety Innovation (CSI™) Safener, enabling it to be used on any soil type, from pre-plant to the two-leaf collar growth stage (V2). While protecting the plant from herbicide injury, the CSI Safener also has been shown to result in increased root growth and plant health.

“Crop response was always a fear of ours with Balance Pro, but we’re more confident in Balance Flexx because of its safener,” says Gerrit Thompson, crop consultant with Crop Production Service, Roachdale, Ind. “Plus, we can apply it on up to two leaf-collar corn. That’s a nice benefit.”

Research by Iowa State University (ISU) in 2008 documented a 10 percent yield loss as early as the V2 corn growth stage due to weed competition. In addition, ISU and University of Wisconsin (UW) research indicates that significant corn yield is lost if weeds are allowed to grow above 4 inches in height.

In fact, if weed pressure is considered heavy (10 or more weeds per square foot), ISU research recommends applying control measures before the weeds exceed 2 inches in height.

“That early treatment timeframe is important, as it minimizes the opportunity for weeds to emerge and compete with corn for valuable nutrients and moisture,” Springsteen says. “It can really pay to prevent weeds from becoming a problem.”

Balance Flexx controls some of the toughest weeds corn growers face, including kochia, woolly cupgrass, marestail, common ragweed and barnyardgrass. Flexible enough to fit any tillage program, Balance Flexx works through the roots and shoots of weeds to provide excellent burndown and residual control.

For more information about Balance Flexx, growers can log on to, contact their local Bayer CropScience sales representative or call 1-866-99-BAYER (1-866-992-2937).

Bayer is a global enterprise with core competencies in the fields of health care, nutrition and high-tech materials. Bayer CropScience AG, a subsidiary of Bayer AG with annual sales of about EUR 6.5 billion (2009), is one of the world’s leading innovative crop science companies in the areas of crop protection, non-agricultural pest control, seeds and traits. The company offers an outstanding range of products and extensive service backup for modern, sustainable agriculture and for non-agricultural applications. Bayer CropScience has a global workforce of 18,700 and is represented in more than 120 countries. This and further news is available at:

Forward-looking statement
This news release may contain forward-looking statements based on current assumptions and forecasts made by Bayer Group or subgroup management. Various known and unknown risks, uncertainties and other factors could lead to material differences between the actual future results, financial situation, development or performance of the company and the estimates given here. These factors include those discussed in Bayer’s public reports, which are available on the Bayer website at The company assumes no liability whatsoever to update these forward-looking statements or to conform them to future events or developments. Bayer CropScience, 2 T.W. Alexander Drive, Research Triangle Park, NC 27709. Always read and follow label instructions. Bayer (reg’d), the Bayer Cross (reg’d), Balance®and CSI™ are trademarks of Bayer. Balance Flexx is a Restricted Use Pesticide. Balance Flexx is not registered in all states. For additional product information call toll-free 1-866-99-BAYER (1-866-992-2937) or visit our Web site at

Please Contact Us for additional information.


View all labels / MSDS

Copyright © Bayer CropScience