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 TRIAL, 2000
Richard Greenland, Leonard Besemann, and Heidi Eslinger
Table 22. Corn development, ear height and ear removal score for se sweet corn.
Table 23. Number of ears per acre and yield of se sweet corn.
Table 24. Husk characteristics of se sweet corn.
Table 25. 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; pH=7.3; 2.2% organic matter; soil-P was very high; soil-K was high; soil-S was very high. |
Previous crops: | 1999 - carrot; 1998 - potato; 1997 - sweet corn. |
Seedbed preparation: | Disked on 29 October 1999. Multiweeded (field cultivated) twice: April 5 and May 1. |
Planting: | Seeded on May 1 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 4, broadcast 18 lbs N/acre and 20 lbs S/acre as 21-0-0-24. Knifed in 100 lbs N/acre as 28-0-0 + N-serve (1 qt/acre) on June 27. |
Irrigation: | Overhead sprinkler irrigation as needed. |
Pest Control: | Dual + Cypro (1.5 pt/acre + 1.5 lb/acre applied on May 3), cultivation, and hand weeding controlled weeds. Sprayed Dipel (2 lbs/acre on July 3) 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. |
Most hybrids had good yields and quality. Yields of 'sugar enhanced' sweet corn were generally higher than yields of 'supersweet' sweet corn. Silver Princess, Temptation, Wizard, and Silver King were the best looking. Honey Select, Kandy Plus, and Sunset had the top yields. Honey Select was the sweetest. The Sweet Scarlet did not develop a good red color until the corn was old.
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Table 22. Corn development, ear height and ear removal score for se sweet corn in the Oakes Irrigation Research Site 2000 'sugar enhanced' sweet corn performance trial.
Hybrid | Seed source1 | Early stand2 | Days to half-silk | Days to harvest | Ear height3 | Ear removal4 |
1000s/acre | inches | 1 to 10 | ||||
BC 0801 | NV | 42.0 ab5 | 75.5 fg | 99.0 ef | 27.3 de | 6.3 e-h |
Ecstase II | SW | 28.2 e | 66.5 a | 87.5 a | 14.5 ij | 7.8 a |
Honey Select | NV | 40.5 abc | 75.0 f | 98.0 de | 29.5 cd | 6.5 d-h |
Jackpot | NV | 43.0 ab | 76.5 hij | 100.5 gh | 30.8 bc | 6.8 b-f |
Kandy Plus | NV | 36.4 bcd | 76.8 ij | 100.8 h | 31.5 abc | 6.5 d-h |
Seneca Pronto | PS | 36.9 bcd | 68.0 b | 88.0 a | 16.0 i | 7.0 a-e |
Seneca Spring | PS | 41.8 ab | 66.3 a | 87.3 a | 16.5 i | 7.3 a-d |
Sensor | AS | 39.2 abc | 75.8 fgh | 99.3 efg | 33.0 ab | 5.3 i |
Serendipity | NV | 40.7 abc | 75.5 fg | 98.8 ef | 29.0 cd | 6.4 e-h |
Silver King | NV | 39.7 abc | 76.0 ghi | 99.0 ef | 32.5 ab | 5.8 hi |
Silver Princess | NV | 41.8 ab | 71.8 d | 92.8 c | 25.5 ef | 7.0 a-e |
Snowshoe | PS | 38.4 abc | 67.0 a | 87.8 a | 20.0 h | 7.0 a-e |
Summer Flavor 64Y | AC | 33.6 cde | 67.0 a | 88.0 a | 12.0 j | 6.6 c-g |
Summer Flavor 76W | AC | 37.2 bcd | 75.8 fgh | 99.3 efg | 26.0 e | 6.0 f-i |
Summer Flavor 79BC | AC | 31.0 de | 71.0 d | 92.0 c | 21.3 gh | 7.0 a-e |
Sunset | AS | 44.6 a | 77.0 j | 101.0 h | 33.3 ab | 7.5 ab |
Sweet Scarlet | AS | 42.3 ab | 75.8 fgh | 99.8 fgh | 33.8 a | 5.9 ghi |
Temptation | AS | 39.7 abc | 69.0 c | 90.3 b | 21.0 gh | 6.4 e-h |
Twilight | SW | 42.3 ab | 73.8 e | 97.3 d | 24.5 ef | 7.3 a-d |
Wizard | AS | 43.3 ab | 71.0 d | 92.0 c | 23.0 fg | 7.4 abc |
C.V. (%) | 13 | 1 | 1 | 8 | 9 | |
Probability | 0.003 | 0.0001 | 0.0001 | 0.0001 | 0.0001 |
1See Appendix A for seed source code.
2Stand before thinning. 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. The higher the score, the easier it was to remove the ear.
5Values in the same column followed by the same letter are not significantly different at the 0.05 level.
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Table 23. Number of ears per acre and yield of se sweet corn in the Oakes Irrigation Research Site 2000 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 | ||
BC 0801 | NV | 30.5 a-d2 | 11.5 bcd | 30.5 abc | 11.5 bcd | 28.7 abc | 6.8 ab | 30.5 abc | 7.1 b-e |
Ecstase II | SW | 22.8 fg | 6.6 i | 25.6 d | 7.0 k | 20.0 g | 3.6 h | 25.6 d | 4.2 j |
Honey Select | NV | 34.1 a | 12.9 a | 34.6 a | 13.0 a | 28.7 abc | 6.7 abc | 34.6 a | 7.6 abc |
Jackpot | NV | 30.0 a-e | 12.3 abc | 31.3 abc | 12.6 ab | 26.4 b-e | 6.7 abc | 31.3 abc | 7.5 abc |
Kandy Plus | NV | 30.2 a-d | 12.6 ab | 31.3 abc | 12.8 a | 26.4 b-e | 7.4 a | 31.3 abc | 8.1 a |
Seneca Pronto | PS | 27.2 c-f | 8.0 h | 29.2 bcd | 8.4 hi | 23.6 d-g | 4.5 fg | 29.2 bcd | 5.2 i |
Seneca Spring | PS | 21.9 g | 6.0 i | 26.9 cd | 7.0 jk | 21.1 fg | 3.9 gh | 26.9 cd | 4.7 ij |
Sensor | AS | 33.3 ab | 11.8 a-d | 34.6 a | 12.1 abc | 32.3 a | 7.0 ab | 34.6 a | 7.4 a-d |
Serendipity | NV | 29.5 b-e | 10.7 def | 31.0 abc | 11.0 c-f | 26.6 b-e | 5.8 de | 31.0 abc | 6.4 efg |
Silver King | NV | 31.0 abc | 11.0 cde | 31.5 abc | 11.1 cde | 30.7 ab | 6.8 ab | 31.5 abc | 6.9 c-f |
Silver Princess | NV | 28.2 cde | 9.9 ef | 31.0 abc | 10.4 d-g | 26.4 b-e | 5.9 cde | 31.0 abc | 6.5 efg |
Snowshoe | PS | 30.0 a-e | 8.0 h | 32.0 ab | 8.3 hij | 29.0 abc | 5.1 ef | 32.0 ab | 5.4 hi |
Summer Flavor 64Y | AC | 26.1 d-g | 7.3 hi | 27.2 cd | 7.5 ijk | 21.0 fg | 3.6 gh | 27.2 cd | 4.4 j |
Summer Flavor 76W | AC | 25.6 efg | 9.6 f | 27.7 bcd | 10.0 efg | 22.8 efg | 5.5 e | 27.7 bcd | 6.1 fgh |
Summer Flavor 79BC | AC | 26.6 c-g | 10.0 ef | 28.4 bcd | 10.4 d-g | 22.8 efg | 5.2 ef | 28.4 bcd | 6.1 gh |
Sunset | AS | 31.0 abc | 11.7 a-d | 31.3 abc | 11.8 abc | 28.2 a-d | 7.2 ab | 31.3 abc | 7.8 ab |
Sweet Scarlet | AS | 29.0 b-e | 9.4 fg | 31.0 abc | 9.8 fg | 26.6 b-e | 5.4 e | 31.0 abc | 6.0 gh |
Temptation | AS | 29.0 b-e | 9.4 fg | 31.0 abc | 9.8 fg | 27.2 b-e | 5.8 de | 31.0 abc | 6.3 fg |
Twilight | SW | 28.7 cde | 10.9 de | 29.0 bcd | 11.0 c-f | 27.2 b-e | 6.4 bcd | 29.0 bcd | 6.7 d-g |
Wizard | AS | 26.1 d-g | 8.2 gh | 30.7 abc | 9.2 gh | 25.1 c-f | 5.3 ef | 30.7 abc | 6.1 gh |
C.V. (%) | 11 | 9 | 10 | 9 | 13 | 11 | 10 | 9 | |
Probability | 0.0001 | 0.0001 | 0.012 | 0.0001 | 0.0001 | 0.0001 | 0.012 | 0.0001 |
1See Appendix A for seed source code.
2Values in the same column followed by the same letter are not significantly different at the 0.05 level.
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Table 24. Husk characteristics of se sweet corn in the Oakes Irrigation Research Site 2000 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 | ||
BC 0801 | NV | 1.9 ab5 | 3.3 ab | 2.0 b-e | 73 abc | 7.5 abc |
Ecstase II | SW | 1.5 cd | 1.5 ij | 2.3 abc | 66 a-d | 7.4 abc |
Honey Select | NV | 1.9 ab | 2.3 efg | 2.0 b-e | 35 def | 6.9 cde |
Jackpot | NV | 1.9 ab | 3.2 abc | 1.8 de | 80 ab | 6.9 cde |
Kandy Plus | NV | 1.8 abc | 2.4 d-g | 1.9 cde | 75 abc | 6.9 cde |
Seneca Pronto | PS | 1.8 abc | 1.4 j | 1.8 de | 61 a-d | 6.6 de |
Seneca Spring | PS | 1.3 d | 1.8 f-j | 1.8 cde | 22 def | 6.5 e |
Sensor | AS | 2.0 a | 2.1 fgh | 2.1 a-d | 20 ef | 7.1 b-e |
Serendipity | NV | 1.9 ab | 2.7 cde | 2.3 abc | 53 b-e | 7.5 abc |
Silver King | NV | 2.0 a | 2.9 bcd | 2.4 ab | 53 b-e | 7.6 ab |
Silver Princess | NV | 1.6 bcd | 2.0 f-i | 2.5 a | 81 ab | 7.9 a |
Snowshoe | PS | 1.4 d | 1.8 g-j | 1.6 e | 59 a-d | 6.9 cde |
Summer Flavor 64Y | AC | 1.8 abc | 1.6 hij | 2.4 ab | 10 f | 7.8 ab |
Summer Flavor 76W | AC | 2.0 a | 3.1 abc | 1.9 cde | 34 def | 7.1 b-e |
Summer Flavor 79BC | AC | 1.9 ab | 2.4 d-g | 1.9 cde | 58 a-d | 7.1 b-e |
Sunset | AS | 2.0 a | 2.2 e-h | 1.9 cde | 75 abc | 7.1 b-e |
Sweet Scarlet | AS | 2.0 a | 3.5 a | 1.9 cde | 43 c-f | 7.3 a-d |
Temptation | AS | 1.5 cd | 1.9 f-j | 1.8 de | 88 a | 7.1 b-e |
Twilight | SW | 1.9 ab | 2.4 def | 2.1 a-d | 78 ab | 7.3 a-d |
Wizard | AS | 1.6 bcd | 2.3 d-g | 2.1 a-d | 70 abc | 7.5 abc |
C.V. (%) | 13 | 18 | 16 | 42 | 7 | |
Probability | 0.0004 | 0.0001 | 0.008 | 0.0006 | 0.009 |
1See Appendix A for seed source code.
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 25. Ear characteristics of sweet corn in the Oakes Irrigation Research Site 2000 se sweet corn performance trial.
Hybrid | Seed source1 | Ear length | Ear diameter | Average rows of kernels | Tip shape2 | Kernel color | Kernel yellow/red intensity3 | Ear overall score |
------- inches -------- | 1 to 3 | 1 to 3 | 1 to 10 | |||||
BC 0801 | NV | 8.2 bcd4 | 1.73 cde | 15.5 b-e | 1.5 ab | bi | 1.5 cd | 6.9 de |
Ecstase II | SW | 7.0 j | 1.67 efg | 14.0 ef | 1.1 bc | bi | 1.5 cd | 7.3 b-e |
Honey Select | NV | 8.5 ab | 1.78 abc | 17.0 ab | 1.0 c | yel | 1.6 bcd | 7.4 bcd |
Jackpot | NV | 8.3 bcd | 1.77 a-d | 16.5 bc | 1.1 bc | bi | 1.4 de | 7.0 cde |
Kandy Plus | NV | 8.9 a | 1.86 a | 17.0 ab | 1.1 bc | yel | 1.8 abc | 6.9 de |
Seneca Pronto | PS | 6.9 j | 1.71 c-f | 14.0 ef | 1.0 c | yel | 1.4 de | 7.1 b-e |
Seneca Spring | PS | 7.1 ij | 1.68 d-g | 12.6 fg | 1.0 c | bi | 1.3 def | 7.1 b-e |
Sensor | AS | 8.1 cde | 1.73 cde | 15.5 b-e | 1.0 c | bi | 1.5 cd | 7.0 cde |
Serendipity | NV | 8.1 cde | 1.67 efg | 15.0 cde | 1.4 abc | bi | 1.4 de | 7.1 b-e |
Silver King | NV | 7.5 f-i | 1.74 cde | 16.5 bc | 1.6 a | wh | -- | 7.4 bcd |
Silver Princess | NV | 7.9 def | 1.73 cde | 16.5 bc | 1.0 c | wh | -- | 7.6 b |
Snowshoe | PS | 7.2 ij | 1.63 fg | 14.0 ef | 1.0 c | wh | -- | 7.1 b-e |
Summer Flavor 64Y | AC | 7.2 hij | 1.58 g | 12.0 g | 1.1 bc | yel | 1.1 ef | 6.8 e |
Summer Flavor 76W | AC | 8.4 bc | 1.74 cde | 16.0 bcd | 1.0 c | wh | -- | 7.5 bc |
Summer Flavor 79BC | AC | 7.4 ghi | 1.77 a-d | 15.5 b-e | 1.0 c | bi | 1.9 ab | 7.3 b-e |
Sunset | AS | 8.2 bcd | 1.76 b-e | 16.0 bcd | 1.5 ab | bi | 1.8 abc | 7.4 bcd |
Sweet Scarlet | AS | 7.5 f-i | 1.69 c-f | 15.5 b-e | 1.0 c | red | 1.0 f | 6.9 de |
Temptation | AS | 7.7 efg | 1.84 ab | 16.0 bcd | 1.0 c | bi | 2.0 a | 8.5 a |
Twilight | SW | 7.6 fgh | 1.77 a-d | 18.5 a | 1.4 abc | bi | 1.6 bcd | 7.1 b-e |
Wizard | AS | 7.5 f-i | 1.75 b-e | 14.5 def | 1.0 c | bi | 1.9 ab | 7.6 b |
C.V. (%) | 4 | 4 | 9 | 24 | 17 | 6 | ||
Probability | 0.0001 | 0.0001 | 0.0001 | 0.01 | 0.0001 | 0.0005 |
1See Appendix A for seed source code.
2Tip shape: 1 is pointed; 2 is blunt; 3 is double or flat.
3Gives darkness of yellow or red kernels on ear. 1 = light; 2 = medium; 3 = dark.
4Values in the same column followed by the same letter are not significantly different at the 0.05 level.
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