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Table 1. Early and full season harvest of Yukon Gold versus Superior in Ontario, 1999 (5 locations each).
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Cultivar
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Marketable Yield,
Early Harvest
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cwt/acre
Late Harvest
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Yukon Gold
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182*
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316*
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Superior
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161
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340
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*No significant difference between the two cultivars.
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Table 2. Nebraska trials: Yield data from 1997, 1998 and 1999; locations were Imperial, O’Neill and Scottsbluff each year.
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Cultivar
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Total Yield
cwt/a
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Yield >1.88”
cwt/a
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Specific
gravity
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Fry Color
^
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Yukon Gold
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390
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402 A*
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1.080 A*
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2.6 A*
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Rus Burbank
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369
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326 B
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1.074 B
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3 B
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Rus Norkotah
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362
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333 B
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1.074 B
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3 B
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site mean
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356
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327 B
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1.075 B
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2.9 B
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^ SFA Chart: 1=lightest, 5=darkest
* When columns are followed by letters, numbers followed by the same upper-case letter are not different at 95% confidence level.
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Cultivar
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Common
Scab ^
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Black
Scurf ^
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Vascular
Discolor ^
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Yukon Gold
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3.7 A*
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4.7 B*
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1.7
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Rus Burbank
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0.3 B
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12.8 A
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1.8
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Rus Norkotah
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0 B
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1.1 B
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0.5
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^ Percent of Tubers Harvested
* When columns are followed by letters, numbers followed by the same upper-case letter are not different at 95% confidence level.
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Table 4. Nebraska trials: Defects data from 1997, 1998 and 1999; locations were Imperial, O’Neill and Scottsbluff each year.
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Cultivar
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Off
Shape ^
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Hollow
Heart ^
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Sprouting ^
(1997 only)
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Yukon Gold
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3.0 B*
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0.7 a
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1.7
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Rus. Burbank
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12.0 A
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0.1 ab
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0
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Rus. Norkotah
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4.9 B
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0 b
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0
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^ Percent of Tubers Harvested
* When columns are followed by letters, numbers followed by the same upper-case letter are not different at 95% confidence level and when followed by the same lower-case letter they are not different at the 90% confidence level.
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