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- Origin & Breeding: bred by USDA from ((Chippewa x Katahdin) x (3895-13 x Earlaine)) and selected by Presque Isle Station, Maine, in 1941.
- Year registered in Canada: 1951
- Registration number: 563
- Maturity: mid-season to late.
- Plants: large, erect, spreading at maturity; stems thick, not pigmented, prominently angled.
- Leaves: dark green, long, broad; midribs scantly pubescent.
Terminal leaflets: ovate; tip acute; base lobed.
Primary leaflets: large, ovate, four pairs.
Secondary leaflets: medium in number.
Tertiary leaflets: few to none.
- Flowers: very few, large, white; scantly pubescent green buds.
- Tubers: elliptical to oblong, medium thick; smooth creamy buff skin; shallow eyes; white flesh.
- Sprouts: greyish green, faintly purple at the base.
High yielding fast growing variety, widely adapted. Requires close planting (15 to 20 cm between plants) and vine killing to avoid producing oversized and rough tubers. Excellent storage quality. Long dormancy period. High total solids.
NOTE: tubers grow green rapidly when exposed to light.
- Utilization: good to excellent for boiling, baking, chipping and French frying.
- Chief Markets: seed export, fresh market, chipping.
Reaction to Diseases
Field resistant: PVA, PVY.
Resistant: tuber net necrosis.
Moderately resistant: foliage late blight, black leg , fusarium dry rot (Fusarium coeruleum), phoma rot, potato wart, seed-piece decay, PVS and PVX.
Susceptible: common scab, fusarium dry rot (Fusarium sambucinum), tuber late blight, leaf roll, pink eye and rhizoctonia.
Highly susceptible: verticillium wilt.
References: 1, 6.
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