The Smorgasbord: Castle Russet

Published online: Jul 03, 2018 Seed Potatoes, Smorgasbord
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This article appears in the July 2018 issue of Potato Grower.

In this month’s Smorgasbord, with the help of our friends at the Tri-State Breeding and Research Program, we get to know Castle Russet, a medium- to late-maturing variety with high full-season yield of oblong-long, heavy-russeted tubers with higher dry matter content and cold sweetening resistance than those of standard russet varieties.

Check www.pvmi.org for a full list of seed growers.

History

  • Parentage: PA00V6-3 × PA01N22-1
  • Developed by Tri-State Breeding and Research Program, released in 2018
  • PVP applied for in 2018

Management

  • Management guidelines similar to Russet Burbank
  • Planting: 9- to 11-inch seed piece spacing with rows spaced 34 to 36 inches apart
  • Medium to large tuber size profile similar to Ranger Russet under full growing season
  • Higher yields at 350 to 400 pounds of nitrogen fertilizer per acre than at low nitrogen input
  • Fertility needs similar to Russet Burbank

Strengths

  • High late-season yields of U.S. No. 1 tubers
  • Typy appearance and culinary qualities make it a suitable candidate for fresh market production.
  • Extremely resistant to potato virus Y, corky ring spot caused by tobacco rattle virus, and potato mop top virus
  • Greater resistance to Fusarium dry rot, common scab and most internal and external defects than Russet Burbank
  • Resistant to Metribuzin

Weaknesses

  • Prone to hollow heart in early harvest trails
  • Higher glycoalkaloids under certain growing conditions than standard cultivars

Storage

  • Moderate dormancy, 50 to 60 days shorter than Russet Burbank
  • Good fry quality when stored between 40 and 48 degrees
  • Susceptible to shatter bruise
  • Higher resistance to blackspot bruise than standard cultivars

 

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