|
|
 |
|
|
|
Cultivar
|
US#1 Yield
cwt/acre
|
Specific
Gravity
|
Chip Color (1)
(out of field)
|
|
Snowden
|
424
|
1.081
|
77
|
|
Atlantic
|
412
|
1.083
|
70
|
|
Norchip
|
324
|
1.074
|
65
|
|
Chip color (1) after 130 days storage at:
|
|
|
50F
|
45F
|
45F plus 20 days
reconditioning
|
|
Snowden
|
64
|
61
|
66
|
|
Atlantic
|
67
|
48
|
60
|
|
Norchip
|
60
|
49
|
52
|
|
(1) Agtron scale: excellent = >60, acceptable = 56 to 60, marginal = 50 to 55, and rejected = <50.
|
|
|
|
|
Table 2. Performance of Snowden in the Snack Foods Assoc. Potato Chip Trials, means of three years, 1988-1990.
|
|
|
|
|
Cultivar
|
US#1 Yield
cwt/acre
|
Specific
gravity
|
Chip Color
(1)
|
|
Snowden
|
219 b
|
1.085 B
|
59
|
|
Atlantic
|
259 a
|
1.088 A
|
58
|
|
Norchip
|
210 b
|
1.079 C
|
58
|
|
(1) Agtron scale: excellent = >60, acceptable = 56 to 60, marginal = 50 to 55, and rejected = <50.
Numbers followed by the same upper-case and lower-case letters are not different at the 95 and 90% levels, respectively; if not followed by a letter than data are not significantly different at the 90% level.
|
|
|
|
|
Table 3. Performance of Snowden at the Hancock Research Station in Wisconsin, means of 7 trials in 7 years (1985-1991). [communicated by David Curwen]
|
|
|
|
|
Cultivar
|
US#1 Yield
cwt/acre
|
Percent
Solids
|
Chip Color
(1)
|
|
Snowden
|
589 A
|
20.5 A
|
3.4 A
|
|
Atlantic
|
548 B
|
20.2 A
|
4.4 B
|
|
Norchip
|
475 C
|
18.6 B
|
4.7 A
|
|
(1) Scale is 1 (light) to 10 (dark); 4 is acceptable; chipped after 50 days storage at 50F.
Numbers followed by the same upper-case letter are not different at the 95% level.
|
|
|
|
|
|
|
|
|
|
Table 4. Performance of SNOWDEN in Nebraska, means of 11 trials over 5 years and 4 locations (1989-1993).
|
|
|
|
|
Cultivar
|
US#1 Yield
cwt/acre
|
Specific
Gravity
|
Chip Color (1)
Pre=Con
|
50F
|
45 F
|
|
Snowden
|
313 B
|
1.090 A
|
64 A
|
63
|
64 a
|
|
Atlantic
|
376 A
|
1.093 A
|
61 AB
|
62
|
59 ab
|
|
Monona
|
312 B
|
1.072 C
|
57 BC
|
62
|
57 ab
|
|
Norchip
|
303 B
|
1.082 B
|
56 C
|
60
|
53 b
|
|
Note plant spacing was 9 to 10 inches.
(1) Agtron readings, refer to Table 3.
Pre-Con = after 3 weeks pre-conditioning; data on Pre-Con were means of eight trials over 3 years and 4 locations.
50F = preconditioned and stored for 3 to 5 months at 50F, 45F = same as 50F but storage was at 45F; data on stored tubers (50F and 45F) were means of 4 trials over 2 years and 2 locations.
No reconditioning occurred.
Numbers followed by the same upper-case and lower-case letters are not different at the 95 and 90% levels, respectively; if not followed by a letter than data are not significantly different at the 90% level.
|
|
|
|
|
|
|
|
|
|
Table 5. Yield, specific gravity and defects of Atlantic and Snowden in Nebraska variety trials, means of 13 irrigated trials conducted around the state from 1996 to 2001.
|
|
|
|
|
Data
|
Atlantic
|
Snowden
|
site mean
|
|
Total Yield, cwt/a
|
475
|
476
|
442
|
|
Yield US grade A
|
454
|
452
|
417
|
|
Specific Gravity
|
1.092 a
|
1.089 b
|
1.086 c
|
|
Chip Color (SFA chart)
|
1.1
|
1.3
|
1.3
|
|
% Common Scab
|
9.9
|
9.0
|
8.5
|
|
% Black Scurf
|
4.5 a
|
.5 b
|
4.5 a
|
|
% Mis-Shaped
|
1.5 b
|
1.8 b
|
4.3 a
|
|
% Hollow Heart
|
2.2
|
2.0
|
2.0
|
|
Numbers in rows followed by the same letter are not significantly different at the 90% confidence level.
Chip color determined after one month curing: 1 = lightest, 5 = darkest.
|
|
|
|
|
|
|
|
|
|
Table 6. Yield, specific gravity and defects of Atlantic and Snowden in North Central variety trials, means of irrigated trials conducted in North America central region from 1995 to 2001.
|
|
|
|
|
|
Atlantic
|
Snowden
|
site mean
|
|
Total Yield, cwt/a
|
379
|
371
|
376
|
|
Yield US grade A
|
330
|
321
|
322
|
|
Specific Gravity
|
1.088 a
|
1.084 b
|
1.079 c
|
|
% External Defects
|
10
|
11
|
12
|
|
% Internal Defects
|
21
|
16
|
15
|
|
Numbers in rows followed by the same letter are not significantly different at the 90% confidence level.
|
|
|
