Sonja

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Trifolium repens L. White clover · Agricultural · bred by Wirén, Gunnar

also searched as: сонйа

Variety description

10 August 2026

The variety is intended for improving the quality of forage lands. When used in mixtures with grasses such as Phleum pratense or Dactylis glomerata, the variety provides an increase in the nutritional value of the forage due to an increase in crude protein content and overall digestibility.

The plant possesses high adaptability to temperate climate conditions and demonstrates high dry matter yield indicators. The variety is characterized by good regeneration ability after grazing or mowing, and is also distinguished by stable winter hardiness.

Sources5

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Countries of admission

7 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.

IS FI NO SE EE IE GB DK LV LT NL DE PL BY PT ES FR BE CZ SK UA RU LU CH AT HU MD IT SI HR RS RO MT GR BG CY

QM QZ

active terminated no record

Variety registered as early as 3 jurisdictions, data for which we do not publish: their registry licenses have not yet been verified.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: Wirén, Gunnar 5 Developed the variety
Applicant: Svalof Weibull AB (SE) 120 Submitted the application to the register
Maintainer: Svalof Weibull AB (SE) 120 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

№ 41/16

Terminated

1 October 1991
QZ European Union Active

№ 209526
SE Sweden Active

№ AR 113

Application

11 November 1975

Registration

13 May 1976
DK Denmark Terminated

№ 11542

Application

2 February 1979

Registration

3 December 1985

Terminated

15 August 2012
CH Switzerland Terminated

№ CV 80-00489

Application

10 September 1980

Registration

7 June 1983

Terminated

1 June 2007
FR France Terminated

№ 0055308

Application

2 December 1980

Registration

1 January 1984

Terminated

1 January 1999
NO Norway Terminated

№ A219

Application

14 June 1989

Registration

14 June 1989

Terminated

23 February 2017
AT Austria Protection expired

№ 677

Application

19 December 1996

Registration

19 December 1996

Terminated

31 December 2011
PL Poland Terminated

№ R R4817

Application

8 January 2002

Registration

1 March 2006

Terminated

27 January 2015

Registry	Number	Application	Registration	Terminated	Status
GB United Kingdom	41/16	—	—	1 October 1991	Terminated
QZ European Union	209526	—	—	—	Active
SE Sweden	AR 113	11 November 1975	13 May 1976	—	Active
DK Denmark	11542	2 February 1979	3 December 1985	15 August 2012	Terminated
CH Switzerland	CV 80-00489	10 September 1980	7 June 1983	1 June 2007	Terminated
FR France	0055308	2 December 1980	1 January 1984	1 January 1999	Terminated
NO Norway	A219	14 June 1989	14 June 1989	23 February 2017	Terminated
AT Austria	677	19 December 1996	19 December 1996	31 December 2011	Protection expired
PL Poland	R R4817	8 January 2002	1 March 2006	27 January 2015	Terminated

Plant breeders' rights

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

United Kingdom № 41/16

Terminated

Application filed —
Registered —
Entry closed 15 September 1986

More 1 record protections in other jurisdictions are shown on the map above.

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

Breeder

Wirén, Gunnar

breeder code WW V 10

All 5 varieties of company

Registry records

Total records: 14
Jurisdictions shown: 7
Not yet disclosed: 3
First registration: 1976

Same species