Snowden: Tables

Characteristics | Management Profile | Tables

Table 1. Performance of Snowden in Michigan, means of 2 trials in 2 years (1988-89). [communicated by Richard Chase]
 
 

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.
 

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