Ranger Russet (A7411-2)

Parentage – Butte x A6595-3^1,2,3

Breeder – Selected at the University of Idaho Aberdeen Research and Extension Center in 1977; released by USDA and the Agricultural Experiment Stations of Idaho, Oregon, Washington and Colorado in 1991^1,2,3,4,5

Maturity – Medium late^1,2,3,4,5

Usage – Great for French frying because of the lack of after-cooking discoloration^1,2,3,4,5 and fresh market^1,5

Plant – Large, upright to spreading habit with medium, thick, green stems that look light brown with red-purple pigmentation in full sun^1,3 and have medium wavy wings¹

Leaves – Large, broad, open, medium green^1,2,3,5 with slightly pigmented midribs; terminal leaflets are oval with pointed tips and bluntly rounded bases^1,2; three to four pairs of ovate primary leaflets; three to four pairs of secondary leaflets and up to three pairs of tertiary leaflets¹

Flowers – Abundant, medium to large, red-violet with bright yellow anthers^1,2,3; produce moderate amounts of pollen¹

Tubers – Long, slightly flattened with medium russeted brown skin^1,2,3,5; white flesh; medium deep eyes with slight prominent eyebrows that are well distributed across tuber^1,2,3; medium tuber dormancy^1,2,3,5; high specific gravity^1,2,5

Strengths – Has lower reducing sugars at harvest and throughout storage resulting in lighter fry color¹; very resistant to heat necrosis, hollow heart, Verticillium wilt, metribuzin exposure and potato virus X and Y; moderately resistant to early blight, common scab, potato leafroll virus and Fusarium dry rot^1,2,3,5

Weaknesses – Susceptibility to blackspot bruises, late blight, and root-knot nematode^1,2,4; moderately susceptible to growth cracks^1,3,5

References: ¹Pavek, J.J. et al. 1992. Ranger Russet: A Long Russet Potato Variety for Processing and Fresh Market with Improved Quality, Disease Resistance and Yield. American Journal of Potato Research 69: 483-488. ²http://www.inspection.gc.ca/plants/potatoes/potato-varieties/ranger-russet/eng/1312587385851/1312587385852 ³https://www.potatoassociation.org/industry/varieties/russet-potato-varieties/ranger-russet-solanum-tuberosum ⁴http://www.extension.uidaho.edu/nutrient/pdf/Potato/Cultural%20Management%20of%20Ranger%20russet%20potatoes.pdf ⁵https://cropwatch.unl.edu/potato/rangerrusset_management

Page 1 of 1

Last Revised: 5/8/19

© 2019 The Board of Regents of the University of Wisconsin System

This article was posted in Fact Sheet.