Competence areas







October 2017

Market launch of Baytan™ 3 in Germany


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20 percent less yield, if not even more: A Typhula attack in the winter barley field can have this impact on farmers. Curative measures are not effective. With Baytan™ 3, Bayer SeedGrowth™ has brought a seed applied product to the German market which comprehensively protects against fungal diseases.

“Curative measures do nothing against Typhula,” says Norbert de Baey, application expert at Bayer SeedGrowth.

The hidden danger – this is how experts like to describe the Typhula rot. Why? Dr. Ute Kropf from the agricultural department at the University of Applied Sciences Kiel explains: “A Typhula attack is very much dependent on the weather and is therefore difficult to plan for.” In addition, it is a soil-borne disease from which you cannot see how badly a plant is actually affected. “What’s more, Typhula causes many different symptoms, which does not make identification any easier,” says the scientist.

Underestimated danger gaining ground

Hardly known until now, Typhula is quickly gaining relevance as a problem. But how does the fungal disease spread? Affected plants form sclerotia in which the pathogen survives the summer dormant on the soil surface or at a shallow soil depth. In the fall, a mycelium then grows out of this which also attacks the parts of the plants above the earth. The conditions for this are high air and soil moisture, which are promoted by temperatures around freezing point and sustained snow cover.
The farmer then discovers the yellowed plants in the spring, after the snow melts. According to Dr. Kropf, “If we have a mild fall like the one in 2015, with T-shirt weather until after Christmas, the danger of disease increases.” Then even sexual reproduction of Typhula is possible. This has the effect that the infection is not spread in pockets, but rather quickly and extensively, even into neighboring populations. “Between 20 percent crop loss up to total failure, anything is possible in a large-scale Typhula attack,” says Dr. Kropf.
Click to enlarge

Barley field infected with Typhula

Prevention instead of treatment

“Curative measures do nothing against Typhula,” says Norbert de Baey, application expert at Bayer SeedGrowth. This is because fungicides can only be used on living plant cells; in contrast, Typhula develops in the dead cell. “Here we can use a protective procedure with the correct seed applied fungicide,” says de Baey. With Baytan 3, an advancement of Baytan Universal liquid seed treatment, Bayer SeedGrowth is bringing a product to the German market in 2017 which enables consistent protection against Typhula rot and Pyrenophora graminea for barley.

New active substance for a comprehensive effect

“In Baytan 3 we combine the proven active substances Triadimenol and Prothioconazol with the new active substance Fluopyram,” explains Heinrich Mumme, product specialist for Baytan at Bayer SeedGrowth. “In this way we deliver farmers comprehensive protection against seed and soil-borne pathogens, safeguard the young leaves from diseases such as mildew, net blotches, stripe disease, Typhula and simultaneously improve the root formation as well as the stress tolerance of the plants.”
“Barley can be affected by numerous diseases; previous seed treatments often did not cover this or only partially,” says Mumme. Baytan 3, however, offers a complete package to protect against fungal diseases. And how does it work? The treatment of the seed with Triadimenol significantly changes the root-shoot ratio in favor of the roots. They become longer, have more mass. In this way the plant is better anchored in the ground and can absorb more nutrients. This helps the young barley plant, especially in difficult times such as young development as well as during overwintering. And the stalk is also influenced by Baytan 3. Seeds coated with Baytan 3 later yield plants with compact, steady growth and significantly sturdier stalks, which leads to increased frost tolerance. The two fungicide active substances Prothioconazol and Fluopyram complete Baytan 3.

Baytan™ 3

Seed treatment for comprehensive protection of barley against fungal diseases.

Protection against:
  • Typhula
  • Snow mold
  • Loose smut
  • Covered smut
  • Leaf stripe
  • Early leaf diseases such as mildew and net blotches

  • Healthier fall development through better ground root penetration
  • Better overwintering through growth-regulating effects for a stronger stalk base and more stable stalk for less frost sensitivity
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