White Rose

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Leaf Flower Plant
Sprout Sliced tuber Tuber

General

  • Origin & Breeding: bred by Mrs. Rachel Chapman, New York State (USA) in 1871 from a berry (true seed) of the variety Jackson.
  • Year registered in Canada: 1923
  • Registration number: P-19
  • Maturity: mid-season

Botanical Features

  • Plants: large, spreading; stems medium thick, prominently angled; slightly swollen nodes; internodes sometimes finely mottled reddish purple on upper part of stems; wings not prominent, slightly waved.
  • Leaves: moderately open; medium sized to small; midribs not pubescent.
    Terminal leaflets: broadly ovate; tip obtuse; base decurrent.
    Primary leaflets: four to five pairs; medium ovate.
    Secondary leaflets: few, at the junctions of the midrib and petiolules.
  • Flowers: small white corolla; flower buds not pigmented, weakly pubescent.
  • Tubers: large, long, elliptical, flattened, usually irregular; smooth white skin; numerous medium-deep eyes; white flesh.
  • Sprouts: reddish purple

Agricultural Features

High yielding variety of attractive appearance; adapted to irrigated areas; tuber size early. Requires close planting and fertile soil for optimal yields. Good storability. Generally low specific gravity.

  • Utilization: good for boiling and baking; unsuitable for chipping.
  • Chief Market: fresh market

Reaction to Diseases

Susceptible: blackleg, common scab, fusarium dry rot, late blight, leaf roll, verticillium wilt, PVS,PVX, PVY, potato wart.

References: 1, 6, 9.

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