Yorktown III

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Lolium perenne L. Perennial ryegrass · Agricultural · bred by PROSEEDS MARKETING

also searched as: ёрктовн иии

Variety description

10 August 2026

The Yorktown III variety belongs to the turf grass category and is used primarily for landscaping. Perennial ryegrass is valued for its rapid germination and ability to form a dense sward resistant to trampling, which allows for its use on sports fields, golf courses, and private plots.

The variety was included in breeding programs in the state of Oregon in the early 1990s for the selection of promising lines. Detailed morphological characteristics, such as precise height, productivity indicators, or data on disease resistance, are absent in open sources.

Sources2

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Countries of admission

2 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

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Variety registered as early as 2 jurisdictions, data for which we do not publish: their registry licenses have not yet been verified.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: ProSeeds Marketing, Inc. 29 Developed the variety
Applicant: ProSeeds Marketing, Inc. 29 Submitted the application to the register
Rights holder: ProSeeds Marketing, Inc. 29 Holds the rights to the variety
Maintainer: Proseeds Marketing Inc. 29 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

№ 205978

Registration

16 April 2003

Terminated

11 February 2014
TR Turkey Active

№ Yorktown III

Registration

9 April 2015
IT Italy Terminated

№ 007285_A 007285

Application

14 July 1999

Registration

16 April 2003

Terminated

11 February 2014

Registry	Number	Application	Registration	Terminated	Status
QZ European Union	205978	—	16 April 2003	11 February 2014	Terminated
TR Turkey	Yorktown III	—	9 April 2015	—	Active
IT Italy	007285_A 007285	14 July 1999	16 April 2003	11 February 2014	Terminated

Plant breeders' rights

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

United States of America № 9200212

Protection expired

Application filed 16 June 1992
Registered 31 January 2000
Entry closed 31 January 2020

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

PROSEEDS MARKETING

breeder code LDRF

All 29 varieties of company

Registry records

Total records: 6
Jurisdictions shown: 2
Not yet disclosed: 2
First registration: 2000

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