Chieftain

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GENERAL

• Origin & Breeding: bred by A.E. Kehr from (la1027-18 x La1354) and selected by the Department of Horticulture, Iowa State University, Ames, Iowa, in 1957.
• Year registered in Canada: 1973
• Registration number: 1487
• Maturity: mid-season

BOTANICAL FEATURES

• Plants: medium sized, upright, spreading at maturity; wings prominent.
• Leaves: dark green, semi-open, long, slightly pubescent; midribs reddish purple.
  Terminal leaflets: broadly ovate.
  Primary leaflets: narrowly ovate, generally four pairs.
• Flowers: large, light violet.
• Tubers: oval to oblong, smooth bright red skin; shallow to medium-deep eyes, darker than the skin; white flesh.
• Sprouts: reddish purple.

AGRICULTURAL FEATURES

High yielding variety, attractive appearance, widely adapted. Undersizing can be a problem if soil moisture becomes limiting. Well suited for washing at maturity. Good storability. Medium specific gravity.

Remark: space at 15 cm with low nitrogen for seed export.

• Utilization: good to excellent for boiling, good for chipping at harvest, excellent for french frying; not suitable for processing.
• Chief Market: seed export, fresh market, pre-peeled product in the institutional trade.

REACTION TO DISEASES

Moderately resistant: late blight, common scab, rhizoctonia, silver scurf, stem-end browning, tuber net necrosis, verticillium wilt.
Susceptible: black leg, fusarium dry rot, leaf roll, phoma rot, PVX and PVY.

References: 1, 6.

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