AC Stampede Russet

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GENERAL

• Origin & Breeding: bred by the potato breeding program of Texas A & M University from the cross (Lemhi Russet x BR7091-1) in 1980. Selected jointly by Agiculture and Agri-Food Canada Lethbridge Research Station (Alberta) and Texas A & M University.
• Year registered in Canada: 1998
• Registration number: 4833
• Maturity: medium to late season

BOTANICAL FEATURES

• Plants: medium height, erect; stems moderately pigmented, particularly at the nodes; prominent straight single wings; nodes not swollen.
• Leaves: medium green, open, pubescent; midribs moderately pigmented; petioles strongly pigmented.
  Terminal leaflets: broadly ovate; tip acuminate; base truncate and asymmetrical; weakly wavy margins.
  Primary leaflets: four pairs; broadly ovate; tip acuminate; base truncate and asymmetrical.
• Flowers: moderately numerous, medium size violet corolla, very prominent star; bright yellow anther; flower bud strongly pigmented; peduncle moderately pigmented; medium berry production.
• Tubers: oblong; russetted brown skin; shallow eyes, intermediate in number, evenly distributed; not prominent eyebrows; white flesh.
  
  
• Sprouts: spherical, moderately pubescent; base violet, weakly pigmented; apex green.

AGRICULTURAL FEATURES

High yielding variety of attractive appearance; medium number of tubers per plant, very uniform in size; low level of internal and external defects; good storability; medium dormancy period; high specific gravity.

Best performance under irrigated conditions; optimum spacing at 30 cm; high rate of nitrogen required for optimum tuber size.

• Utilization: no cooking discolouration; moderate sloughing after boiling; very good for boiling (mealy texture) and baking (moist texture); excellent for french frying.
• Chief Markets: fresh market, french fries.

REACTION TO DISEASES

Resistant: verticillium wilt, fusarium dry rot.
Moderately resistant: early blight, common scab.
Susceptible: late blight.

References: 1, 8.

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