Win the battle against scab and other wheat diseases with an 8.2 oz/A rate of Prosaro

May 29, 2019

Increased rate helps growers maximize grain quality, yield and profit potential

ST. LOUIS, May 30, 2019 /PRNewswire/ -- Cereal diseases like scab affect grain quality and yield and rob wheat growers of profitability year after year. But growers can fight back and win with Prosaro® fungicide. The timely application of the 8.2 oz/A rate of Prosaro provides long-lasting protection against scab and other diseases, even under the heaviest disease pressure, for higher grain quality, yield and profitability.

Scab develops during the flowering and early grain fill stages. Fields are most susceptible when the following conditions are present:

  • Temperatures range between 77-86° Fahrenheit
  • Overcast days
  • High humidity
  • Recent rainfalls / Prolonged dews

"With scab, there will be premature bleaching on a portion of or the entire head. You may also see a pink or orange mold growing at the base of the spikelets," explained Kevin Thorsness, Bayer technical service representative and one of the Bayer Cereal Experts. "A timely foliar fungicide application is critical to prevent scab development when environmental conditions are favorable for disease development."

The Bayer Cereals Experts recommend an 8.2 oz/A rate application of Prosaro fungicide at the early flowering (Feekes 10.5.1) stage as conditions become favorable for disease development.

"Applying Prosaro at 8.2 oz/A during optimal scab conditions protects the plant health from foliar and head diseases," said Thorsness. "Applying a fungicide at earlier stages, like Feekes 10.3, could result in lower yields and higher DON (deoxynivalenol) levels as compared to application at the recommended 10.5.1 timing."

Higher Yields

Field trials have shown that Prosaro at 8.2 oz/A, applied at the early flowering stage, can result in an average yield increase of 8 bu/A of spring wheat over untreated acres.

"Trials indicated an average increase of an additional 2.5 bushels per acre with Prosaro at 8.2 oz/A on top of the 5.5 average bushel increase with the 6.5 oz/A rate. That's about a 3-to-1 ROI," said Thorsness. "In winter wheat, Prosaro at 8.2 oz/A had an average yield increase of 13 bu/A more than untreated fields."

With Prosaro, growers get unsurpassed disease control and fast action that lasts from the No. 1 scab reducer for higher grain quality, yield and profit potential.

To learn more about Prosaro and how it helps maximize grain quality, yield and profit potential, contact your local Bayer Cereal Expert or local retailer or visit

©2019 Bayer Group. Always read and follow label instructions. Bayer, the Bayer Cross and Prosaro are registered trademarks of Bayer Group. Prosaro 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 Bayer CropScience LP, 800 North Lindbergh Blvd., St. Louis, MO 63167.

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

Visit the Bayer Connect - Social Hub for social media, recent news, blog posts, videos and more from Crop Science, a division of Bayer.

About Bayer
Bayer is a global enterprise with core competencies in the life science fields of health care and nutrition. Its products and services are designed to benefit people by supporting efforts to overcome the major challenges presented by a growing and aging global population. At the same time, the Group aims to increase its earning power and create value through innovation and growth. Bayer is committed to the principles of sustainable development, and the Bayer brand stands for trust, reliability and quality throughout the world. In fiscal 2018, the Group employed around 117,000 people and had sales of 39.6 billion euros. Capital expenditures amounted to 2.6 billion euros, R&D expenses to 5.2 billion euros. For more information, go to


Bayer Media Hotline, 1-862-404-5118, or

Carolyn Nagle
Bayer U.S.
Tel: (862) 404-5955

Michelle Nickrent
Rhea + Kaiser
Tel: (630) 955-2517

Find more information at

Forward-Looking Statements
This release may contain forward-looking statements based on current assumptions and forecasts made by Bayer 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.