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Stoneville Offers Two New Varieties With GlyTol and LibertyLink Traits

San Antonio, TX (PRWEB) January 17, 2013

With weed resistance exploding across America’s farmland, Bayer CropScience introduces two new Stoneville® cotton varieties for 2013 that give cotton growers more tools to fight weed resistance and rotate herbicide chemistries on their farms.

ST 4946GLB2 and ST 6448GLB2 are the first Stoneville varieties to offer multiple herbicide tolerance with GlyTol® and LibertyLink® traits for full crop safety to glyphosate and Liberty® herbicides when used as directed. These varieties also have a two-gene Bt trait to protect against yield-robbing lepidopteran pests.

“These new Stoneville varieties give cotton growers the flexibility to spray Liberty and glyphosate herbicides and develop the best herbicide program for their fields and operation,” said Jeff Brehmer, U.S. product manager for FiberMax® and Stoneville. “Growers can use full label rates of Liberty or glyphosate herbicides on tough-to-control weeds without damage to the crop.”

ST 4946GLB2 is an early-medium maturing GlyTol LibertyLink Bollgard II® variety with exceptional yield potential. It provides herbicide flexibility and crop safety to full labeled rates of Liberty and glyphosate. It offers root-knot nematode tolerance and is an excellent choice for fields with known presence of this pest. ST 4946GLB2 is easy to manage with moderately aggressive growth habits and is broadly adapted across all cotton-growing regions.

ST 6448GLB2 is a full season maturity, GlyTol LibertyLink Bollgard II variety that provides crop safety to full labeled rates of Liberty and glyphosate. It is well adapted for the South Delta and Southeast cotton-growing areas. It has excellent seedling vigor, which results in consistent stand establishment. ST 6448GLB2 has outstanding yield potential as well as very good fiber quality, and is well suited for both irrigated and dryland production.

“Both ST 4946GLB2 and ST 6448GLB2 are ideal varieties for those operations with glyphosate-resistant weed issues, but these varieties are not only for the glyphosate-resistant acre,” Brehmer noted. “These new varieties have excellent yield potential and a strong fiber package. Our objective is to bring to market varieties that exceed the yield potential of our current varieties, so these new varieties have the most advanced trait technologies in the best germplasm that Stoneville has to offer.”

ST 4946GLB2 and ST 6448GLB2 have been tested extensively in large and small plots across the Cotton Belt through the Bayer CropScience Cotton Agronomic Performance (CAP) trials. These trials, which are managed by growers using their local management practices, provide real-world yield and quality information and help identify the best new varieties for the cottonseed market.

Two years ago, Bayer offered its GlyTol LibertyLink stacked herbicide technology with a two-gene Bt trait in FM 2989GLB2, a FiberMax variety for the Texas High Plains. Last year, FM 1944GLB2 brought this stacked herbicide trait package to growers across the Cotton Belt in a FiberMax variety. Growers have seen extraordinary yields and excellent herbicide tolerance with these varieties.

“With the tremendous success of these two FiberMax varieties, we wanted to provide this same high-performing technology in our Stoneville brand for growers across the U.S. Cotton Belt,” Brehmer said.

For more information on how these and other FiberMax and Stoneville cotton seed varieties can work on the farm, growers can contact their regional agronomist or access the Bayer CropScience Variety Selector Tool™. They can also visit and, talk to their local Bayer CropScience representative, or call 1-866-99-BAYER (1-866-992-2937).


Tweet This: Bayer advances 2 new Stoneville cotton varieties for 2013 with tolerance to Liberty and glyphosate herbicides. #BWCC2013

Tweet This: Double up on herbicide and insecticide protection with 2 new Stoneville GLB2 varieties for 2013. #BWCC2013

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About Bayer CropScience
Bayer is a global enterprise with core competencies in the fields of health care, agriculture and high-tech materials. Bayer CropScience, the subgroup of Bayer AG responsible for the agricultural business, has annual sales of EUR 7.255 billion (2011) and is one of the world’s leading innovative crop science companies in the areas of seeds, crop protection and non-agricultural pest control. The company offers an outstanding range of products including high value seeds, innovative crop protection solutions based on chemical and biological modes of action as well as an extensive service backup for modern, sustainable agriculture. In the area of non-agricultural applications, Bayer CropScience has a broad portfolio of products and services to control pests from home and garden to forestry applications. The company has a global workforce of 21,000 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 LP, 2 T.W. Alexander Drive, Research Triangle Park, NC 27709. Always read and follow label instructions. Bayer (reg’d), the Bayer Cross (reg’d), FiberMax®, GlyTol®, Liberty®, LibertyLink®, Stoneville® and the Variety Selector Tool ™are trademarks of Bayer. Liberty is not registered in all states. Bollgard II is a registered trademark of Monsanto Technology LLC. For additional product information, call toll-free 1-866-99-BAYER (1-866-992-2937) or visit our website at

For more information, contact:
Jeff Brehmer
Bayer CropScience
Tel. (806) 765-8844

Drew Harris
Rhea + Kaiser
Tel. (901) 619-5566


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