Russet Norkotah Selection 8

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Russet Norkotah Selection 8
ND534-4 RUSS
Russet Norkotah Selection 8

Parentage –Selection of standard Russet Norkotah (ND9526-4 Russ x ND9687-5 Russ)1,2

Breeder – First selected by Dr. David Holm a potato breeder at Colorado State University San Luis Valley Research Center in 1991 and trialed in 19932

Maturity – Early to mid-season1,3,4; slightly later maturity period than standard Russet Norkotah2

Usage – Primarily used for fresh market3,4; good for baking; poor to moderate for boiling with some after cooking discoloration; poor for chipping3

Plant – Medium size but with slightly larger, more vigorous vine growth than standard Russet Norkotah1,2; slightly upright structure; stems thickness is medium with non-pigmented nodes and internodes1,3,4; plant growth generally halts once flowering occurs5

Leaves –Green, medium size with an open, slightly pubescent structure1,3,4; terminal leaflets are asymmetrical with tips coming to a point; primary leaflets are generally found in pairs of four while secondary and tertiary leaflets are numerous throughout the leaf1,3

Flowers – Medium to small size; white with yellow-orange anthers; buds slightly pigmented1,3,4

Tubers – Long to slightly oblong with smooth, dark tan, russetted skin; numerous, shallow bright golden eyes that are evenly distributed; white flesh; low to medium specific gravity1,3,4,5; higher yielding than standard Russet Norkotah2

Strengths – Attractive appearance; uniform tuber size and shape; wide adaptability; resistant to hollow heart and Columbia root-knot nematode; moderately resistance to common scab, silver scurf, potato leafroll virus and potato virus Y3,4; less nitrogen usage than standard Russet Norkotah2

Weaknesses – Susceptible to most viruses, late blight, early blight, Verticillium wilt and potato wart3,4; can be infected with potato virus Y without expressing symptoms1,3

 

References: 1Johansen, et al. 1988. Russet Norkotah: A New Russet-Skinned Potato Cultivar with Wide Adaptation. American Journal of Potato Research 65: 597-604. 2http://www.certseedpotato.com/nork3&8.html 3http://www.inspection.gc.ca/plants/potatoes/potato-varieties/russet-norkotah/eng/1312587385875/1312587385876 4https://www.potatoassociation.org/industry/varieties/russet-potato-varieties/russet-norkotah-solanum-tuberosum 5https://cropwatch.unl.edu/potato/russetnorkotah_characteristics 6www.potatovirus.com

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Last Revised: 4/11/19

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