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Publication #HS1299

University of Florida Potato Variety Trial Spotlight: ‘Goldrush’1

Rodrick Z. Mwatuwa, Christian T. Christensen, Pam Solano, and Lincoln Zotarelli2

General Comments

‘Goldrush’ is a russet potato variety commonly grown for the fresh potato market particularly for baking and boiling. It was selected from the progeny of a cross between ND450-3Russ and Lemhi Russet at North Dakota State University (Johansen et al. 1993). It was released in 1992 from the North Dakota Agricultural Experiment Station. ‘Goldrush’ demonstrates high yield and good tuber characteristics compared to its commercial standard ‘Atlantic’. Tuber production and quality results provided in this spotlight are summarized from various trials conducted by the UF/IFAS Hastings Agricultural and Extension Center from 2005 to 2014.

General Characteristics

‘Goldrush’ tubers have a brown skin with oblong shape and white flesh color (Figure 1). According to Florida rating codes for potato tuber characteristics (Table 1), the tubers have a good appearance with a heavily russeted skin and intermediate to shallow eye depth. ‘Goldrush’ has demonstrated high yield potential under Florida production conditions (Tables 2 and 3). On average, marketable yield is 262 cwt/acre, approximately 3% below the commercial standard ‘Atlantic’, with 80% of the tubers produced found between classes A1 and A3 size distribution classes. It has a low to medium specific gravity of 1.063 (Table 2).

Figure 1. 

Typical tuber and internal flesh color of ‘Goldrush’ variety.


Credit:

Lincoln Zotarelli, UF/IFAS


[Click thumbnail to enlarge.]

Diseases

‘Goldrush’ demonstrates a slight susceptibility to corky ringspot and internal heat necrosis under Florida conditions (Table 3). It is resistant to common scab (Streptomyces scabies) and moderately resistant to Verticillium wilt (Verticillium albo-atrum and Verticillium dahliae), silver scurf (Helminthosporium solani), and blackspot bruising. ‘Goldrush’ is susceptible to most common potato viruses and other diseases such as mosaic, early blight (Alternaria solani), late blight (Phytophthora infestans), soft rot (Pectobacterium spp.), and fusarium dry rot (Fusarum spp.). The standard UF/IFAS Extension-recommended disease and weed control program described under “Potato Production” (Chapter 13 of the Vegetable Production Handbook for Florida http://edis.ifas.ufl.edu/cv131) should be followed.

Season Length and Growth

‘Goldrush’ is a medium maturing cultivar under Florida growing conditions. Season length was 96 days on average from planting to harvest. This depended on weather conditions during the growing season. The plants should be harvested two to three weeks after vine kill to improve tuber maturation and skin set. Potatoes with proper skin set maintain better skin color, lose less weight in storage, and are more resistant to bruising and soft rot. For more information about vine killing on potatoes, see Potato Vine Killing or Desiccation described in Zotarelli et al. (2011). Late in the season, tuber size should be checked regularly to harvest tubers with desirable, marketable size. Soil moisture should be managed late in the season to avoid high soil moisture conditions that cause enlarged lenticels and delayed skin set.

Fertilization

UF/IFAS trial plots are normally fertilized with 200 to 230 lb/A of N. The first application of 100 lb/A of N (granular) is typically incorporated in the bed prior to planting, followed by one or two side dress fertilizer applications at emergence and/or at tuber initiation. Phosphorus and potassium applications follow the UF/IFAS guidelines described in Liu et al. (2016) and normally range between 45 to 100 lb/A of P2O5 and 170 to 235 lb/A of K2O.

Planting

A seed piece of 2.5 to 3 oz is recommended for planting. This variety should be planted with 40 inches between rows and 8 inches between plants, at 3 to 4 inches deep. A seed rate of 2,000 to 3,000 lb/acre of seed is expected.

Other Information

For additional information on cultivation and weed and disease management, see the “Potato Production” chapter of the Vegetable Production Handbook available at http://edis.ifas.ufl.edu/cv131.

References

David D. n.d. Vegetable Cultivar description for North America. Cucurbit Breeding program, Horticultural Science. Michigan State University. http://cuke.hort.ncsu.edu/cucurbit/wehner/vegcult/potato.html Accessed on 28 July 2016.

Hutchinson, C. M., J. M. White, D. M., Gergela, P. A. Solano, K. G. Haynes, R. Wenrich, and C. S. Lippi. 2003. “Performance of chip processing potato varieties in northeastern Florida.” HortTechnology, 13(4), 706–711.

Johansen, R. H., B. L. Farnsworth, G. A. Secor, N. C. Gudmestad, and A. Thompson-Johns. 1993. "Goldrush: a new russet potato variety." North Dakota farm research (USA). Available at: http://library.ndsu.edu/tools/dspace/load/?file=/repository/bitstream/handle/10365/9617/farm_50_01_08.pdf?sequence=1 Accessed on 1 February 2017.

Liu, G., E.H. Simonne, K.T. Morgan, G.J. Hochmuth, M. Ozores-Hampton, and S. Agehara. 2016. “Fertilizer management for vegetable production in Florida.” In: Vegetable Production Handbook of Florida 2016–17. J.S. Freeman et al. (eds). Farm Media Journal. p.3–10.

The potato association of America. 2017. ‘Goldrush’ (Solanum tuberosum). http://potatoassociation.org/industry/varieties/russet-potato-varieties/goldrush-solanum-tuberosum Accessed on 29 July 2016.

Sisson, J.A. and G.A. Porter. 2002. Performance evaluations of potato clones and varieties in the northeastern states-1999. Maine Agr. For. Expt. Sta., Misc. Publ. 751.

Zotarelli, L., S. Sargent, P. Dittmar, M. Makani. 2011. Potato vine Killing or Desiccation. HS181. Gainesville: University of Florida Institute of Food and Agricultural Sciences. http://edis.ifas.ufl.edu/hs181

Zotarelli, L., J. P. Dittmar, P. D. Roberts, P. Stansly, H. A. Smith, and S. E. Webb, 2016. . Chapter 13. Potato Production. Vegetable Production Handbook for Florida, 2015–2016 Edition. HS733. Gainesville: University of Florida Institute of Food and Agricultural Sciences. http://edis.ifas.ufl.edu/cv131

Tables

Table 1. 

Florida’s rating codes for potato vine maturity and tuber characteristics at harvest.

Tuber Characteristics1

Rating

Code

Vine Maturity

Internal Flesh Color

Skin Color

Skin Texture

Tuber Shape

Eye Depth

Overall Appearance

1

dead

white

purple

partial russet

round

very deep

very poor

2

+-

cream

red

heavy russet

mostly round

--

--

3

yellow and dying

light yellow

pink

moderate russet

round to oblong

deep

poor

4

+-

medium yellow

dark brown

light russet

mostly oblong

--

--

5

moderately senesced

dark yellow

brown

netted

oblong

intermediate

fair

6

+-

pink

tan

slightly netted

oblong to long

--

--

7

starting to senesce

red

buff

moderately smooth

mostly long

shallow

good

8

+-

blue

white

smooth

long

--

--

9

green and vigorous

purple

cream

very smooth

cylindrical

very shallow

excellent

1 Adapted from Hutchinson, C. M., et al. (2003) and Sisson, J.A. and G.A. Porter (2002).

Table 2. 

Summary of production statistics and specific gravity of ‘Goldrush’ potato variety grown at the UF/IFAS Hastings Agricultural Extension Center, Hastings, FL from 2005 to 2014, excluding 2012.

Year

Total Yield

(cwt/acre)

Marketable yield1

(cwt/acre)

% of STD

Standard

Size Class (Distribution by class %)2

Range %

Specific Gravity

C

B

A1

A2

A3

A4

A1 to A3

Culls

2005

295

250

80%

Atlantic

2

13

69

14

2

0

85

1

1.067

2006

379

320

92%

Atlantic

1

12

72

13

3

0

87

3

1.067

2007

396

323

82%

Atlantic

2

13

74

8

3

0

85

4

1.059

2008

353

251

127%

Atlantic

2

24

58

16

0

0

74

4

1.069

2009

400

338

139%

Atlantic

2

12

80

6

0

0

86

3

1.056

2010

344

238

91%

Atlantic

5

23

67

5

0

0

72

5

1.063

2011

319

239

88%

Atlantic

3

16

77

4

0

0

80

7

1.069

2013

289

232

93%

Atlantic

2

13

69

11

4

0

85

4

1.058

2014

289

172

76%

Atlantic

5

32

57

5

1

0

63

6

1.055

Average

340

262

97%

 

3

17

69

9

2

0

80

4

1.063

1 Marketable yield: Sum of size classes A1 to A3.

2 Size classes: C = 0.5 to 1.5 inches, B = 1.5 to 1 7/8 inches, A1 = 1 7/8 to 2.5 inches, A2 = 2.5 to 3.25 inches, A3 = 3.25 to 4 inches, A4 >4 inches; Size distribution by class: Class (wt)/(Total Yield [wt] – culls [wt])

* classification = <1 7/8 inches (C and B included in this classification)

Table 3. 

Vine maturity, tuber characteristics, and internal tuber defects of ‘Goldrush’ potato variety grown at the UF/IFAS Hastings Agricultural Extension Center, Hastings, FL from 2005 to 2014, excluding 2012.

Year

Vine Maturity (vine kill)

Tuber Characteristics1

Internal Defects2

Internal Flesh color

Skin Color

Skin Texture

Tuber Shape

Eye Depth

Overall Appearance

HH

BR

CRS

IHN

2005

7

2

5

2

5

8

7

0

0

0

0

2006

9

2

4

2

5

7

7

0

0

0

0

2007

6

1

4

2

6

7

7

0

0

0

0

2008

6

1

5

3

5

7

6

0

0

0

0

2009

4

2

5

3

4

5

6

0

0

0

0

2010

8

1

5

2

5

6

7

0

0

0

0

2011

3

*

*

*

*

*

6

0

0

28

8

2013

6

*

*

*

*

*

6

0

0

0

0

2014

2

1

5

3

6

7

6

0

0

0

0

Average

6

1

5

2

5

6

6

0

0

3

1

1 See rating system outlined in Florida Rating Code Table (Table 1).

2 Percent tuber defects. HH = hollow heart, BR = brown rot, CRS = corky ring spot, IHN = internal heat necrosis.

*Missing data

Footnotes

1.

This document is HS1299, one of a series of the Horticultural Sciences Department, UF/IFAS Extension. Original publication date May 2017. Visit the EDIS website at http://edis.ifas.ufl.edu.

2.

Rodrick Z. Mwatuwa, research assistant; Christian T. Christensen, postdoctoral research associate; Pam Solano, biological scientist; Lincoln Zotarelli, assistant professor; Horticultural Sciences Department, UF/IFAS Extension, Gainesville, FL 32611.


The Institute of Food and Agricultural Sciences (IFAS) is an Equal Opportunity Institution authorized to provide research, educational information and other services only to individuals and institutions that function with non-discrimination with respect to race, creed, color, religion, age, disability, sex, sexual orientation, marital status, national origin, political opinions or affiliations. For more information on obtaining other UF/IFAS Extension publications, contact your county's UF/IFAS Extension office.

U.S. Department of Agriculture, UF/IFAS Extension Service, University of Florida, IFAS, Florida A & M University Cooperative Extension Program, and Boards of County Commissioners Cooperating. Nick T. Place, dean for UF/IFAS Extension.