Monday, January 26, 2009

Corvus Herbicide Receives U.S. Federal Registration

Corvus herbicide delivers a one-pass solution for corn growers’ weed-control challenges

Corvus herbicide delivers a one-pass solution for corn growers’ weed-control challenges
New herbicide offers season-long broadleaf weed and grass control, application flexibility and crop safety

RESEARCH TRIANGLE PARK, N.C. (January 26, 2009) — Corn growers now have access to a new one-pass, full-season weed control tool, as the U.S. Environmental Protection Agency recently approved Corvus™ herbicide from Bayer CropScience.

Corvus combines the power of two active ingredients to provide excellent control over more than 50 broadleaf weeds and grasses from burndown through early postemergence.

A half-inch of rain can reactivate Corvus, even after a dry period. This unique WeatherShield™ feature makes Corvus less sensitive to random and sporadic spring precipitation, enabling it to control weeds up to 2 inches in early-season corn.

“In our 2008 trials, we saw that Corvus was very competitive during the rainy season,” says Brent Philbrook, Bayer CropScience new products development manager. “When we measured it against other products, Corvus kept fields clean through crop canopy closure.”

Whether growers have a wet or hot-and-dry season, Corvus will take down weed competition when applied to corn through the V2 stage, says Jeff Springsteen, Bayer CropScience product manager for selective corn and soybean products.

“Corvus provides long-lasting residual control by translocating through the roots and shoots of weeds,” he adds.

Corvus controls tough weeds and grasses, such as Palmer amaranth, waterhemp, woolly cupgrass and yellow foxtail, which are increasingly found to show resistance to glyphosate and triazine-based products. With its rapid burndown of weeds, the one-pass herbicide is perfect for any tillage program, including no-till and minimum till.

Corvus offers two modes of action: one, to inhibit the production of HPPD enzymes in plants, and the other, to prevent certain amino acids from blocking plant growth and development.

To be most effective, growers should apply the herbicide at a rate of 5.6 fl oz/A to all soils, except for coarse soils with less than 2.0 percent organic matter, which should use 3.3 fl oz/A, Springsteen adds.

Corvus continues the new innovative products being introduced by Bayer CropScience that will provide growers with the tools needed to maintain healthy, clean fields, which ultimately maximizes yield potential. In 2008, Bayer CropScience successfully launched Laudis® herbicide and on December 24, 2008 received EPA approval for the new Balance®s Flexx herbicide.

“We want growers to have more options in their field management toolbox,” says Springsteen. “By helping growers fight problem weeds and resistance issues, we can ultimately help them increase their bottom line.”

For the 2009 growing season, Corvus will be available with limited supply in Illinois, Indiana, Iowa, Kentucky, Missouri, Ohio, Pennsylvania and Tennessee.

For more information about Corvus, 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 5.8 billion (2007), is one of the world’s leading innovative crop science companies in the areas of crop protection, non-agricultural pest control, seeds and plant biotechnology. 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 about 17,800 and is represented in more than 120 countries.

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, the Bayer Cross and Corvus are registered trademarks of Bayer. Corvus 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

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