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Cosaque

Terminated

Avena sativa L. Oat · Agricultural · bred by Serasem S.A.S.

also searched as: косакве

Variety description

10 August 2026

The variety is a type of common oat with a black or dark-colored grain husk. It is characterized by rapid initial growth and intensive biomass formation. The plant possesses broad leaves and a developed root system. It exhibits good cold tolerance, comparable to other winter varieties, although it may winterkill in the conditions of severe northern winters.

In agronomic practice, the variety is more susceptible to rust and Barley yellow dwarf virus compared to winter rye. Due to the narrow carbon-to-nitrogen ratio in the straw, the variety effectively improves soil structure. The plant is used as a cover crop for weed suppression and soil protection, as well as forage for hay or grazing. Difficulty in controlling stands with glyphosate before the heading stage is noted.

Sources6
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Countries of admission

1 jurisdiction

Green indicates countries where the variety is listed in the national catalogue and its seeds are authorized for sale. Expired registrations are marked separately: the variety was previously admitted, but sale is no longer permitted.

terminated no record

Variety in registries Regions of admission, rights holders, and status of plant breeders' rights

Parties

Breeder
Serasem S.A.S. 157 Developed the variety
Applicant
Serasem (FR) 551 Submitted the application to the register
Rights holder
RAGT 2n S.A.S. Holds the rights to the variety
Maintainer
RAGT 2n (FR) 2 157 Responsible for variety maintenance

Admission to trade

The variety is listed in the national registry — its seeds are authorized for sale in this country.

  • QZ European Union Terminated

    № 220364

    Registration
    3 April 2012
    Terminated
    30 June 2018
  • FR France Terminated

    № 1011263

    Application
    16 August 2002
    Registration
    1 January 2005
    Terminated
    31 December 2015

Plant breeders' rights

The right is granted for a limited term: propagation of the variety requires a license from the rights holder.

European Union № 20050282
Terminated
  1. Application filed 10 February 2005
  2. Registered 17 August 2005
  3. Entry closed 16 August 2016

Records are sourced from official registry publications. Data sources and legal status

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This is a directory, not an official registry: data is based on public disclosures and may have changed. More about sources

Same species

Other varieties: Oat

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Avena sativa L. · Oat

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Avena sativa L. · Oat

Lochow-Petkus GmbH (DE)

FR
4 records

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Protection expired

Avena sativa L. · Oat

Cebeco Zaden BV (NL)

DE FR NL
3 records

Nearby in the species list Concept, Condor, Conny, Consul, Conway, Coracle, Corneil, Corrado, Corrib, Cory, Costaud, Cowboy, Craig, Cravache, Creole, Crin noir, Criniere, Croara, Cromwell, Cud

Discussion: Cosaque

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