Alion® Flood Irrigation Application Approved for California Orchards and Vineyards

January 19, 2016

Crops include stone fruit, pome fruit, grapes, tree nuts and olives

RESEARCH TRIANGLE PARK, N.C. (January 20, 2016) – The EPA has approved a supplemental label in California easing the restrictions of flood irrigation following application of Alion® herbicide from Bayer. Effective immediately, orchards and vineyards of stone fruit, pome fruit, grapes, tree nuts and olives may be flood irrigated after a 60-day waiting period following application of Alion.

Alion is a broad spectrum pre-emerge herbicide that controls many grasses and broadleaf weeds, including glyphosate resistant species, with up to six months of residual pre-emergent weed control.

“The label change is particularly important in California, where tree and vine growers have been struggling with widespread glyphosate- and ALS-resistant weeds,” says Nevada Smith, Bayer Product Manager. “The residual activity of Alion and its alternative mode of action have established Alion as a foundational element in the herbicide arsenal.”

The EPA’s recent reduced restrictions pertaining to flood irrigation give growers even more flexibility when it comes to structuring an effective weed control strategy based on their specific challenges.”

Alion is a cellulose biosynthesis inhibitor (CBI) – WSSA Group 20 - which reduces the need for residual tankmix partners, especially in resistant weed situations. There are currently no documented cases of resistance to CBI chemistries in the United States. Alion’s alternative mode of action (MOA) helps boost the effectiveness of herbicide resistance management programs by reducing the selection pressure typically caused by overuse of a single MOA.

Bayer is committed to bringing new technology and solutions for agriculture and non-agricultural uses. For questions concerning the availability and use of products, contact a local Bayer representative, or visit Crop Science, a division of Bayer, online at

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Forward-Looking Statements
This 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.®2016 Bayer CropScience LP, 2 T.W. Alexander Drive, Research Triangle Park, NC 27709. Always read and follow label instructions. Bayer, the Bayer Cross, and Alion are trademarks of Bayer. Alion is not registered in all states. For additional product information call toll-free 1-866-99-BAYER (1-866-992-2937) or visit our website at CropScience.Bayer.usCR1215ALIONNA137V00R0