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Birka

Application submitted

Poa pratensis L. Kentucky bluegrass · Agricultural · bred by W WEIBULL

also searched as: бирка

Variety description

10 August 2026

The variety is intended for use as turf grass. In comparative studies, Birka demonstrated the ability to maintain a sufficiently dense stand after several years of use.

Morphologically, the variety is distinguished by seed size, which is approximately 1,223,530 seeds per pound. In evapotranspiration trials, the variety was categorized in the group with relatively high water consumption rates, while showing results comparable to other varieties of its time regarding salinity tolerance and adaptability.

Sources5
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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Variety registered as early as 2 jurisdictions, data for which we do not publish: their registry licenses have not yet been verified. This section will be available upon verification.

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

Parties

Breeder
W. Weibull AB 141 Developed the variety
Applicant
W. Weibull AB 53 Submitted the application to the register
Maintainer
WEIBULLSHOLM PLANT BREEDING INSTITUTE 10 Responsible for variety maintenance

Admission to trade

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

  • GB United Kingdom Terminated

    № 63/16

    Terminated
    1 November 1983
  • SE Sweden Terminated

    № AR 62

    Application
    17 April 1973
    Registration
    16 May 1974

Plant breeders' rights

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

Sweden № A 66
Withdrawn
  1. Application filed 6 March 1972
  2. Registered
  3. Currently active indefinite in the register

More 2 records protections in other jurisdictions are shown on the map above.

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

Found an error in the record?

The directory replicates the primary source. If an entry differs from the official publication, please specify the discrepancy and provide a link if possible. Corrections are added to the moderation queue.

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

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Nearby in the species list Bensun, BENVERDE, Berbi, Bethani, Beyond, Bianca, Bika, Bikar, Bila, Birdie, Birnita, Blackjack, Blue Chip, Blue coat, Blue Gem, Blue Knight, Blue Note, Blue Sapphire, Blue Star, Blue Wave

Discussion: Birka

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