Wednesday, January 19, 2011

Corn Growers Achieve True One-Pass Control with Corvus Herbicide

5.6-ounce rate controlled weeds early and provided long-lasting control.

RESEARCH TRIANGLE PARK, N.C. (January 19, 2011) —“One pass. Zero doubts.” is more than a slogan for growers who used Corvus® herbicide during the 2010 growing season, as they attained effective weed control with just one pass.

“This is the herbicide’s second year on the market and it has performed exceptionally well in both seasons, despite sporadic weather conditions,” says Jeff Springsteen, Bayer CropScience marketing manager for selective corn and soybean herbicides. “Some farmers told us if they had chosen a two-pass program this year, rain would have prevented them from applying their post application. Corvus eliminated that worry because it was applied early and worked all season.”

In a 2003 article, Bob Hartzler, Iowa State University Extension weed specialist and professor of agronomy, wrote: “Is one-pass weed control an agrarian nirvana, or has technology finally given farmers the ability to consistently control weeds with a single trip across the field?”

Unsuccessful attempts over the past several years have caused many growers to affirm Hartzler’s former question, as they generally had to come back with a rescue post application. Today, however, Corvus users say they’ve made one pass a reality.

Corn and soybean producer Bryan Sharp, Taylorville, Ill., says Corvus provides an additional mode of action, but doesn’t require an extra trip across the field.

“Corvus offers a one-pass program that I’m confident in and don’t have to worry about. That means a lot to me,” Sharp says. “I like to change up modes of action. I can do something different in one pass, whereas with other alternatives, I would have to do multiple passes. It just offers a complete package.”

Just 5.6 fl oz/A of Corvus with atrazine provided consistent, long-lasting control of tough grass and broadleaf weeds, such giant ragweed, waterhemp and shattercane, across the Corn Belt.

Eric Berger says he saw Corvus action on hard-to-control giant ragweed pressure in his Wakarusa, Ind., fields: “We had just finished spraying the corn and got heavy rain for about six weeks, so I was concerned about whether Corvus would handle it. Some of our neighbors had a terrible mess with giant ragweed this year, but we didn’t have that problem.”

Corn producer Jim Williams, Cisco, Ill., says obtaining one-pass control was simple. He advises farmers who are considering the herbicide for the 2011 season to follow the recommended labeled rate.

“Farmers sometimes like to cut their herbicide rates,” says Williams, who applied Corvus to all his corn acres this year. “Go full rate. Don’t cut the rate because you will have to spend more money to go back in and rescue. If you go full rate with Corvus, you’ll be fine.”

Spraying the herbicide when weeds are less than 4 inches tall provides
optimal control, Springsteen says.

“Fighting weeds early is essential to producing a high-yielding crop. Clean fields allow corn to get off to a good start without competing with weeds for nutrients and sunlight.”

He adds: “Corvus is a true one-pass because it provides burndown, reactivation and residual through crop canopy. There’s no other product like it on the market.”

In addition to controlling a broad spectrum of weeds, Corvus is perfect for any tillage program and has no interactions with other crop protection products.

For more information about Corvus, growers can visit, talk to their local Bayer CropScience representative or call 1-866-99-BAYER (1-866-992-2937).

Press Release #: USA-BCS-2011-0035

About Bayer CropScience
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, the Bayer Cross and Corvus are registered trademarks of Bayer. Atrazine and Corvus are Restricted Use Pesticides. 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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