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Navigation BulletAbout the Department
Navigation BulletField Seed Program
Navigation BulletPotato Program
Navigation Spacer- Potato Seed
Navigation SpacerCertification
Navigation Spacer - General Program
Navigation SpacerRequirements
Navigation Spacer- Seed Class and
Navigation SpacerGeneration

Navigation Spacer- Field Management
Navigation Spacer& Inspection

Navigation Spacer- Seed Control
Navigation SpacerIsolation Area

Navigation Spacer- Post Harvest Test
Navigation Spacer- Shipping Point
Navigation SpacerInspection

Navigation Spacer- Labeling
Navigation SpacerRequirements

 Navigation Spacer- USDA Programs
Navigation SpacerGHP/GAP

Navigation Spacer- Potato Seedstocks
Navigation SpacerPrograms
Navigation Spacer- Process, Testing
Navigation Spacer& Production

Navigation Spacer- Tissue Culture
Navigation SpacerStock Varieties

Navigation Spacer- Ordering
Navigation Spacer- Prices & Delivery
Navigation Spacer- Wholesale Potato
Navigation SpacerDealer's License

Navigation Spacer- List of ND Licensed
Navigation SpacerDealers

Navigation BulletRegulatory Program
Navigation BulletDiagnostic Lab
Navigation BulletSeed Lab
Navigation BulletFees
Navigation BulletDeadlines
Navigation BulletNews
Navigation BulletContacts

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Harvesting Potatoes
Seed Classification and Limited Generation System

North Dakota produced certified seed is limited to seven years of reproduction in the field, generations 0-5 and the Certified Class. Generation 0 seed is produced from tissue-culture derived, pre-nuclear seed stocks. Subsequent generations advance by each field year.

Generation 5 seed is the last year eligible for recertification. The Certified Class is the progeny of Generation 5, and used only for commercial planting purposes. Seed is downgraded (advanced in generation) if it does not meet tolerances for disease or varietal purity for the generation applied.


 
A generation table for many states can be found at:
http://www.umaine.edu/paa/Certification/Generation%20Table0508.htm

 

 

 

 

 

 

 

 

 

 

 

 

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