Blazer Russet

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Leaf Flowers Plant
Sprout Tuber Sliced tuber


  • Origin & Breeding: bred by J.J. Pavek, USDA, Aberdeen (Idaho) from the cross (A7816-14 x Norking Russet) and released jointly by the USDA-ARS and the Agricultural Experiment Stations of Idaho, Oregon and Washington in 2005.
  • Year registered in Canada: 2011
  • Registration number: 6981
  • Maturity: early to mid-season

Botanical Features

  • Plants: small to medium sized, semi-erect; stems strongly pigmented; prominent wings.
  • Leaves: medium to dark green, semi-open; midribs weakly pigmented; petioles moderately pigmented; medium deep veins.
    Terminal leaflets: medium to narrowly ovate; acute to acuminate tip; cordate base; moderately wavy margins.
    Primary leaflets: three to six pairs; narrowly ovate; acute to acuminate tip; cordate base.
    Secondary and tertiary leaflets: moderately numerous.
  • Flowers: moderately numerous; large white corolla; yellowish-orange anthers; buds strongly pigmented; calix and pedicel strongly pubescent; pedicel articulation prominent; peduncle moderately pigmented.
  • Tubers: oblong; light beige russetted skin; shallow eyes, evenly distributed; slightly prominent eyebrows; white flesh.
  • Sprouts: narrow cylindrical; dark blue-violet; base and tip moderately pubescent and strongly pigmented; closed habit.

Agricultural Features

High yielding variety of attractive appearance. Good resistance to sugar ends, tuber malformations and shatter bruises; moderately resistant to blackspot bruises; moderately susceptible to hollow hart. Medium dormancy period. High specific gravity.

  • Utilization: fairly firm to mealy texture; very good for French fries and baked potatoes.
  • Chief Markets: processing and fresh market.

Reaction to Diseases

Highly resistant: common scab, tuber powdery scab, PVX.
Moderately resistant: tuber late blight.
Moderately susceptible: PVYo, early blight on tuber, Erwinia soft rot, Fusarium dry rot.
Susceptible: Verticillium wilt, pink rot, leafroll net necrosis, corky ringspot, foliar early blight and late blight.

References: 1, 8.

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