Oakes Irrigation Research Site
Carrington Research Extension Center * North Dakota State University
P.O. Box 531, Oakes, ND 58474-0531, Voice: (701) 742-2189, FAX: (701) 742-2700, email: rgreenla@ndsuext.nodak.edu

 

'SUGAR ENHANCED' SWEET CORN HYBRID PERFORMANCE TRIAL, 2001

Richard Greenland, Leonard Besemann and Delores Anderson


Results summary

Table 18. Corn development, ear height and ear removal score

Table 19. Number of ears per acre and yield

Table 20. Husk characteristics of se sweet corn

Table 21. Ear characteristics of se sweet corn


Sweet corn grows very well in this area of North Dakota. The short summer is compensated for by long days and lots of sunshine. Sweet corn always matures before frost.


MATERIALS AND METHODS


Soil:

Maddock sandy loam, Hecla Sandy loam and Embden Sandy Loam; pH=6.7; 2.2% organic matter; soil-P and soil-K were very high; soil-S was very low.

Previous crops:

2000 - field corn; 1999 - soybean; 1998 - tomato.

Seedbed

preparation:

Disked on April 20. Multiweeded (field cultivated) twice; once on May 8 to smooth the seed bed and once on May 9 to incorporate fertilizer.

Planting:

Seeded on May 9 in 30-inch rows. Planting depth was about 2 inches. Plots were seeded at a rate of 50,000 seeds/acre, then later thinned to 28,000 plants/acre.

Plots:

Plots were 5 rows (12.5 ft) wide by 17 ft long. There were 4 reps.

Fertilizer:

On April 19, broadcast 10 lbs N/acre and 50 lbs P2O5/acre as 10-50-0 and 18 lbs N/acre and 20 lbs S/acre as 21-0-0-24. Sprayed 50 lbs N/acre as 28-0-0 on May 9. Knifed in 50 lbs N/acre as 28-0-0 + N-serve (1 qt/acre) on June 22.

Irrigation:

Underground drip irrigation as needed.

Pest Control:

Dual II (1.5 pt/acre on May 9) and hand weeding controlled weeds. Sprayed Dipel (2 lb/acre on July 2) to control European corn borer and corn earworm.

Harvest:

Hand harvested 23 to 25 days after half-silk date. Only the center row of each plot was harvested. Harvested from July 27 to Aug 10.

RESULTS


Most hybrids had good yield and quality. BC 4806, Bon Appetit TSW, GH7006 and Silver Princess were the best looking. Luscious TSW, Bon Appetit TSW and Silver Princess had the top yields. Honey Select was the sweetest but did not look as good.


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Table 18. Corn development, ear height and ear removal score for se sweet corn in the Oakes Irrigation Research Site 2001 sugar enhanced sweet corn performance trial.

Hybrid

Seed source1

Early stand2

Days to

 half-silk

Days to harvest

Ear height3

Ear removal4

 

 

1000s/A

 

 

inches

1 to 10

Accord

ME

44.8 bc5

70.8 j

93.0 h

20.0 fg

6.9 abc

BC 4806

RG

38.2 c

69.0 gh

91.0 fg

22.8 bcd

6.6 a-d

BC 6206

RG

44.6 bc

63.8 d

86.0 d

18.3 gh

6.9 abc

Bon Appetit TSW

ME

41.5 bc

62.5 bc

81.0 b

21.0 def

6.8 abc

Ecstase II

SW

41.5 bc

58.0 a

79.0 a

15.8 i

6.9 abc

GH 7006

RG

47.4 ab

57.8 a

79.0 a

16.0 i

6.3 bcd

Honey Select

RG

46.6 ab

69.5 hi

91.5 fg

24.3 abc

6.6 a-d

Jackpot

RG

44.6 bc

70.0 ij

92.0 gh

21.3 def

6.0 d

Luscious TSW

ME

47.4 ab

63.3 cd

83.5 c

21.3 def

7.3 a

Precious Gem

ME

42.3 bc

68.3 g

90.3 f

22.3 cde

6.4 bcd

Rapport TSW

ME

43.6 bc

63.3 cd

83.5 c

17.5 hi

5.1 e

Serendipity

RG

47.4 ab

68.3 g

90.5 f

22.8 bcd

6.5 bcd

Silver Princess

RG

53.3 a

65.0 e

86.0 d

24.5 ab

6.6 a-d

Silver King

RG

45.4 bc

69.3 hi

91.0 fg

25.5 a

6.3 cd

Tuxedo

ME

42.0 bc

67.3 f

87.8 e

20.3 efg

7.0 ab

Welcome

ME

42.5 bc

62.3 b

83.0 c

18.3 gh

6.5 bcd

Probability

0.05

<.0001

<.0001

<.0001

<.0001

C.V. (%)

11

1

1

7

7

1See appendix A for seed source codes.

2Corn was over planted. After stand count, corn was thinned to about 28,000 plants/acre (unless there were fewer than 28,000 plants that emerged).

3Distance from ground to base of ear.

4Indicates ease of ear removal, higher = easier.

5Values in the same column followed by the same letter are not significantly different at the 0.05 level.


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Table 19. Number of ears per acre and yield of se sweet corn in the Oakes Irrigation Research Site 2001 se sweet corn performance trial.

Hybrid

Seed source1

Unhusked

Husked

marketable

total

marketable

total

ears

yield

ears

yield

ears

yield

ears

yield

 

 

1000s/A

tons/A

1000s/A

tons/A

1000s/A

tons/A

1000s/A

tons/A

Accord

ME

11.5 h2

4.1 g

16.4 e

5.0 i

  7.9 b

2.2 e

16.4 e

3.6 e

BC 4806

RG

21.8 d-g

8.1 a-d

25.1 bcd

8.6 b-e

19.2 a

4.8 abc

25.1 bcd

6.2 ab

BC 6206

RG

25.1 a-d

7.4 def

27.4 abc

7.8 d-g

22.0 a

4.4 bc

27.4 abc

5.1 d

Bon Appetit TSW

ME

24.3 a-e

9.3 a

25.9 a-d

9.6 ab

21.5 a

5.3 ab

25.9 a-d

5.9 a-d

Ecstase II

SW

21.3 efg

6.2 f

23.3 d

6.4 h

17.7 a

3.2 de

23.3 d

3.9 e

GH 7006

RG

27.0 ab

6.8 def

30.7 a

7.3 e-h

22.7 a

4.1 bcd

30.7 a

5.0 bcd

Honey Select

RG

23.8 a-e

7.7 cde

27.4 abc

8.1 c-g

21.0 a

4.8 abc

27.4 abc

5.6 a-d

Jackpot

RG

22.3 c-g

8.2 a-d

25.6 bcd

8.8 a-d

18.7 a

4.7 abc

25.6 bcd

5.7 a-d

Luscious TSW

ME

23.3 a-f

9.2 ab

26.6 a-d

9.7 a

20.5 a

5.5 a

26.6 a-d

6.4 a

Precious Gem

ME

19.2 g

6.3 f

25.1 bcd

7.4 fgh

17.2 a

4.3 bcd

25.1 bcd

5.4 bcd

Rapport TSW

ME

23.6 a-e

8.7 abc

26.1 a-d

9.2 abc

17.4 a

4.5 abc

26.1 a-d

6.1 abc

Serendipity

RG

22.5 b-g

7.3 def

26.4 a-d

8.1 c-g

20.2 a

4.4 bc

26.4 a-d

5.2 cd

Silver Princess

RG

25.6 abc

8.3 a-d

28.7 ab

8.8 a-d

22.5 a

5.1 abc

28.7 ab

6.0 a-d

Silver King

RG

19.7 fg

6.5 ef

23.1 d

7.1 gh

18.7 a

4.6 abc

23.1 d

5.1 d

Tuxedo

ME

22.8 a-g

7.7 cde

24.3 cd

8.0 d-g

20.0 a

4.8 abc

24.3 cd

5.5 a-d

Welcome

ME

26.4 a

8.0 bcd

29.7 a

8.4 c-f

19.7 a

4.1 cd

29.7 a

5.5 a-d

Probability

<.0001

<.0001

<.0001

<.0001

<.0001

<.0001

<.0001

<.0001

C.V. (%)

12

12

11

10

17

17

11

12

1See appendix A for seed source codes.

2Values in the same column followed by the same letter are not significantly different at the 0.05 level.


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Table 20. Husk characteristics of se sweet corn in the Oakes Irrigation Research Site 2001 se sweet corn performance trial.

Hybrid

Seed source1

Husk color2

Distance husk over tip3

Husk tightness4

Percent short shank

Husk Overall score

 

 

1 to 3

inches

1 to 3

%

1 to 10

Accord

ME

2.5 a5

0.7 h

2.0 a-d

85 ab

6.1 bcd

BC 4806

RG

1.9 bcd

1.7 efg

2.3 abc

63 c-f

7.0 ab

BC 6206

RG

1.9 bcd

2.1 cde

2.3 abc

68 a-e

6.8 ab

Bon Appetit TSW

ME

2.1 abc

3.2 a

2.0 a-d

63 c-f

7.3 a

Ecstase II

SW

2.3 ab

1.7 efg

1.9 bcd

70 a-e

7.0 ab

GH 7006

RG

2.5 ab

1.9 c-g

2.4 ab

76 a-e

6.7 a-d

Honey Select

RG

1.6 cde

1.4 fg

2.3 abc

79 a-d

6.8 ab

Jackpot

RG

1.1 e

1.6 efg

2.0 a-d

73 a-e

6.5 a-d

Luscious TSW

ME

2.5 a

2.6 bc

1.8 cde

59 def

6.9 ab

Precious Gem

ME

1.8 bcd

1.3 g

1.6 de

88 a

5.0 e

Rapport TSW

ME

1.9 bcd

2.8 ab

1.8 cde

44 f

6.9 ab

Serendipity

RG

1.5 de

2.3 bcd

2.4 ab

65 b-e

6.3 a-d

Silver Princess

RG

1.6 cde

1.7 efg

1.8 cde

81 abc

6.6 abc

Silver King

RG

1.8 bcd

1.3 g

2.5 a

70 a-e

6.0 b-e

Tuxedo

ME

1.8 bcd

0.7 h

1.6 de

55 ef

5.6 cde

Welcome

ME

1.8 bcd

1.9 def

1.3 e

69 a-e

5.5 de

Probability

0.002

<.0001

0.0005

0.007

0.002

C.V. (%)

23

22

18

20

11

1See appendix A for seed source codes.

2Color of husk. 1 to 3 is light to dark green.

3The distance the husk extends beyond the end of the ear.

4How tight husk is around ear. 1 = loose; 3 = tight.

5Values in the same column followed by the same letter are not significantly different at the 0.05 level.


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Table 21. Ear characteristics of se sweet corn in the Oakes Irrigation Research Site 2001 se sweet corn performance trial.

Hybrid

Seed source1

Ear length

Ear diameter

Average rows of kernels

Tip unfilled

Tip shape2

Kernel color

Kernel yellow intensity3

Ear overall score

 

 

-------- inches ------

 

inches

1 to 3

 

1 to 3

1 to 10

Accord

ME

7.9 bc4

1.91 a

18.0 a

0.6 bcd

1.5 bc

bi

1.9 a

4.1

BC 4806

RG

8.1 abc

1.72 cd

17.5 ab

0.6 bcd

1.0 d

bi

1.9 a

7.0

BC 6206

RG

7.3 e

1.67 d

15.0 d

0.4 a-d

1.0 d

bi

1.1 b

6.8

Bon Appetit TSW

ME

7.3 e

1.90 ab

15.5 cd

0.0 a

2.0 a

bi

1.0 b

7.0

Ecstase II

SW

7.0 e

1.70 cd

13.0 e

0.0 a

1.0 d

bi

1.3 b

6.8

GH 7006

RG

7.3 e

1.73 cd

14.8 cde

0.1 ab

1.0 cd

y

1.1 b

6.9

Honey Select

RG

8.0 abc

1.75 cd

15.5 cd

0.8 d

1.0 d

y

2.1 a

5.6

Jackpot

RG

8.3 ab

1.75 cd

17.0 abc

0.4 a-d

1.4 bcd

bi

1.9 a

5.8

Luscious TSW

ME

7.3 e

1.94 a

16.0 bcd

0.6 bcd

1.5 bc

bi

1.0 b

6.5

Precious Gem

ME

8.0 abc

1.89 ab

17.0 abc

0.6 bcd

1.0 d

bi

1.3 b

5.9

Rapport TSW

ME

7.3 e

1.89 ab

15.0 d

0.1 a

1.8 ab

bi

1.0 b

6.6

Serendipity

3RG

7.8 cd

1.69 d

15.5 cd

0.6 bcd

1.1 cd

bi

2.3 a

6.5

Silver Princess

RG

7.4 de

1.82 abc

17.5 ab

0.6 cd

1.0 d

w

 ---

6.9

Silver King

RG

7.8 cd

1.78 bcd

17.0 abc

0.4 a-d

1.3 cd

w

 ---

6.5

Tuxedo

ME

8.4 a

1.67 d

15.5 cd

0.6 bcd

1.0 d

y

2.0 a

5.8

Welcome

ME

7.8 cd

1.78 bcd

14.5 de

0.2 abc

1.3 cd

y

1.0 b

6.8

Probability

<.0001

<.0001

<.0001

0.02

0.0003

 

<.0001

0.20

C.V. (%)

4

5

8

77

26

 

20

20

1See appendix A for seed source codes.

2Tip shape: 1 is pointed; 2 is blunt; 3 is double or flat.

3Gives darkness of yellow kernels on ear. 1 = light yellow; 2 = medium yellow; 3 = dark yellow.

4Values in the same column followed by the same letter are not significantly different at the 0.05 level.


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