Skip to content

Birtley

Active

Lolium perenne L. Perennial ryegrass · Agricultural · bred by DLF Trifolium A-S, DK

also searched as: биртлеи

Variety description

10 August 2026

The variety belongs to the tetraploid type and is characterized by an early start of vegetation in the spring period, with a spring growth window duration of 57 days. The plant possesses resistance to rust, leaf spot, and viral infections.

Forage quality is maintained during the summer-autumn period due to reduced shooting after the main cut. The variety is intended for livestock grazing, hay or silage harvesting, as well as for mixed use, including in mixtures with white clover.

Sources2
  • Loading…

Countries of admission

6 jurisdictions

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.

QM QZ

active no record

Variety registered as early as 1 jurisdiction, data for which we do not publish: their registry licenses have not yet been verified.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
DLF Trifolium A/S (DK) 7 Developed the variety
Applicant
DLF Trifolium A/S (DK) 7 Submitted the application to the register
Rights holder
DLF Seeds A/S Holds the rights to the variety
Maintainer
DLF Seeds A/S (DK) 213 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 Active

    № 204230

  • FR France Active

    № 1024685

    Application
    30 November 2007
    Registration
    1 January 2012
  • BE Belgium Active

    № VG/A/LOLPE/00166

    Application
    18 December 2007
    Registration
    17 February 2012
  • DE Germany Active

    № WD 01728

    Application
    10 January 2008
    Registration
    18 April 2012
  • NL Netherlands Active

    № RGE1380

    Application
    14 January 2008
    Registration
    26 March 2012
  • GB United Kingdom Withdrawn

    № 13/2651

    Application
    21 January 2008
    Terminated
    20 April 2012

Plant breeders' rights

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

Netherlands № RGE1380
Active
  1. Application filed 14 January 2008
  2. Registered 30 July 2012
  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

Same species

Other varieties: Perennial ryegrass

All 3 714 varieties of species

Bizet 1

Active

Lolium perenne L. · Perennial ryegrass

DLF SEEDS A/S

DK FR NL
11 records

One 50

Active

Lolium perenne L. · Perennial ryegrass

PGG Wrightson Seeds

IT
11 records

Lolium perenne L. · Perennial ryegrass

Steve Reid

FR UA
11 records

Binario

Active

Lolium perenne L. · Perennial ryegrass

INAKTIV Euro Grass Breeding GmbH & Co. KG

DE NL
5 records

Biro

Terminated

Lolium perenne L. · Perennial ryegrass

DSV Zaden Nederland B.V.

DE NL
5 records

Bivak

Terminated

Lolium perenne L. · Perennial ryegrass

ILVO-PLANT 39

BE
2 records

Nearby in the species list Biathlon, Bifrost, Big Kahuna, Big League, Bijou, Bimal, BIMBO, Bimonda, Binario, Biro, Bivak, Bizet 1, Black Cat II, Black Sparrow, Black Stallion, Blackhawk, Blanchett, Blanco, Blazer, Blazer 4.

Discussion: Birtley

0 messages

Growing experience and notes on the entry. Comments are not part of the reference data and are not verified against primary sources.

Comments are open to signed-in readers. Sign in · Sign up