2004 Sweet Corn Cultivar Evaluation

Canal Winchester, OH

Muck Crops Branch, Celeryville, OH

New Albany, OH

Bob Precheur, Rick Callendar, Jim Doran, David Schacht, Ted Smith, Dennis Ash and Herminio Perez

Extension Vegetable Crops Specialist, Department of Horticulture and Crop Science, Manager, Muck Crops Branch, Celeryville, OH, Grower Cooperaters: New Albany, OH, Canal Winchester, OH, and Muck Crops Branch Staff

This project is supported in part by the Ohio Vegetable and Small Fruit Research and Development Program.

Contact Information: Dept. of Horticulture and Crop Science, The Ohio State University

2001 Fyffe Ct., Columbus, OH 43210

614-292-3857

email: precheur.1@osu.edu

Sweet Corn is Ohio's number one fresh market vegetable with between 15,000 to 17,000 acres planted depending on the year. In the US, Ohio ranks 6^th in fresh market sweet corn production. Sweet corn is produced throughout OH, in the southeast along the Ohio River, in many counties around Cincinnati, and also throughout central and northern OH.

Objectives

To identify sweet corn cultivars with good emergence, high marketable yield and excellent quality under OH growing conditions.

Methods

Three plantings were established in 2004 for evaluation of sweet corn cultivars that included two plantings at vegetable farms in the Columbus area and one at the OARDC Muck Crops branch in Celeryville, OH. The first bi-color and white se planting was on April 30 in Canal Winchester, OH. Bi-color sh2’s were planted on May 17. In Canal Winchester, all bicolor and white se and sh2 were 4 row ~500 foot plots. Total nitrogen applied was 110 lbs of actual nitrogen per acre. For weed control, Dual was applied followed by one cultivation. The second planting was on May 25 in New Albany, Plots were four rows at approximately 1000 feet or larger and received 120 lbs/A of actual nitrogen. Atrazine and Bullet were used for weed control. All se varieties were planted no-till at this location. The last planting was on May 27 in Celeryville, OH on muck soil. Eighty five pounds of actual N/acre was applied pre-plant. Laddock was applied post-planting in 2 applications. Sweet corn plots consisted of 4 rows, 30 in apart and 25 ft long, later shortened to 20 ft. Plots are arranged in a randomized complete block design with 4 replications.

Data collected from all locations included emergence, plant and ear characteristics and marketable yield. Sweetness was determined by a purely subjective evaluation of raw eating quality. Each variety was also evaluated for percent germination at ten different temperatures on the thermo-gradient table and the saturated salt accelerated aging test.

Results

Twelve sh2’s and 9 se’s were included in this year’s trial.

In the se’s, maturity ranged from 70 to 88 days. Percent plant stand was 90 percent or greater for the varieties planted at Canal Winchester and Celeryville. Percent germination of the no-till se varieties ranged from 74 to 80% (see Table 2) with only 4 varieties below 70 % germination (Trinity, Precious Gem, Cinderella and Eureka). Plant vigor ratings at Celeryville paralleled % germination of no-till se’s at New Albany. Overall, varieties with good germination had good plant vigor. The SSAA test in table 3 is a good predictor of vigor under stress conditions and yield performance.

The best plant vigor in the se’s and sh2’s were: Nantasket, Polka, Nauset, Precious Gem, BC 0805, Ogunquit, Mirai 308BC, ACX 725BC, Mirai 301BC and Mirai 117Y.

The best bicolor se varieties in terms of yield, ear characteristics and flavor were Precious Gem and BC0805. Polka and Trinity had good flavor and earliness but yield and ear size may not be be desirable. Nantasket is of medium to good quality and Nauset has undesirable ear characteristics.

Only one white se, Cinderella, was evaluated and yield varied from low to high depending on location. Kernals were tender and flavor was evaluated from medium to good. Ear size and appearance was generally acceptable. Whiteout, evaluated last year, might be a better choice since it had good yields with ears measuring 7.7 inches. Flavor was ranked good to very good at three locations.

Two yellow se’s were evaluated at two locations. Ogunquit was the best producing large ears and high yields. Flavor was good and kernels were nice and tender.

Seven bicolor sh2’s were evaluated this year. Plant stand was greater than 80% or higher at most locations except for ACX1022 B. A late May planting followed by frequent rain and wet heavy soils reduced plant stands of Mirai 327 and Tango. Yield at all three locations was good except for ACX 1022 BC and ACX642AW. Flavor was rated as good or very good with all varieties. Some cultivars have a sweet, crunchy kernel texture and others have a slightly tough pericarp. See the ear characteristics tables for each location. Except in a few instances and locations, the Mirai types had good plant stand and yields. Flavor was rated as very good to excellent. Some of the newer types available are earlier than previous varieties. Tango had kernels with a slightly tough pericarp but could be used for roadside markets by picking it a few days early.

WSS 0987is the best of the three white sh2 varieties with good yields and a sweet crunchy flavor. WSS 0987 is an Attribute corn producing ears that are 7.2 inches long and 1.8 inches wide. The color is slightly off-white but growers feel this is not a problem.

In the yellow sh2 category. Mirai 117Y and Mini Mirai 003 were evaluated at three locations. Plant stand for Mirai 117Y varied from 85 to 100 per cent depending on location. Plant stand was much lower with Mini Mirai 003 because this was one year old seed. Mirai 117Y produces high yields of 7.5 to 8 inch ears. Flavor was rated as very good. Mini Mirai 003 variety produces 6 to 7 inch ears about 2 inches in diameter. Tight husks over the tips form a nice package. Flavor is excellent. Mini Mirai 003 is ideal for customers looking for alternatives to large ears, restaurants and other specialty markets. This product is not being offered in the future.

Table 1. List of Sweet Corn Varieties Evaluated in 2004

ID #	NAME	Gene	Color	Days	Company
	SE's
1	Trinity	se	Bi	70 (1190)	Crookham
2	Nantasket	se	Bi	70-73	MM R
3	Polka	se	Bi	70	MM R
4	Nauset	se syngeristic	Bi	80	Mesa Maize
5	Precious Gem	se	Bi	80	Mesa Maize
6	BC 0805	seg F1	Bi	82	Rogers
7	Cinderella	se syngeristic	White	80 (1360)	Crookham
8	Eureka (MXH 30407)	se	Y	73	Mesa Maize
9	Ogunquit	Se Syngergistic	Y	79	Mesa Maize
	SH2's
10	Mirai 308BC	sh2	Bi	71	Centest
11	Mirai 327	sh2	Bi	73	Centest
12	Double Up	seg F1 supersweet	Bi	73	Rogers
13	ACX 725BC	sh2	Bi	75	AC
14	Mirai 301BC	sh2	Bi	76	Centest
15	ACX 1022BC	sh2	Bi	78-79	AC
16	Tango	sh2	Bi	84 (1428)	Crookham
17	ACX 1075W	sh2	White	78	AC
18	WSS 0987 Vp	sh2	White	81	Rogers
19	ACX 642AW	sh2	White	82	AC
20	Mirai 117Y	sh2	Y	70	Centest
21	Mirai 003 mini	sh2	Y	72	Centest

Table 2. Percent Plant Stand at Three Locations in 2004

Number	Variety	Color	Canal Winchester	New Albany	Celeryville	Plant Vigor^1
	SE's		Planted Apr. 30	No-Till Planted: May 25	Planted: May 27	At Celeryville
1	Trinity	B	-	65	92	M – G
2	Nantasket	B	94	74	100	G
3	Polka	B	97	76	85	G
4	Nauset	B	97	80	100	G - VG
5	Precious Gem	B	100	68	99	G - VG
6	BC 0805	B	100	82	97	G - VG
7	Cinderella	W	100	69	100	M
8	Eureka (MXH 30407)	Y	-	68	92	M - G
9	Ogunquit	Y	-	74	100	M - G
	SH2's		Planted May 17	Planted: May 25	Planted: May 27
10	Mirai 308BC	B	100	71	89	M - G
11	Mirai 327	B	100	52	88	M - G
12	Double Up	B	-	90	98	G
13	ACX 725BC	B	-	85	93	G - VG
14	Mirai 301BC	B	100	65	91	G
15	ACX 1022BC	B	100	44	58	P - M
16	Tango	B	98	56	95	G
17	ACX 1075W	W	-	48	92	G
18	WSS 0987 Vp	W	-	-	81	M – G
19	ACX 642AW	W	-	38	55	P – M
20	Mirai 117Y	Y	100	85	100	VG
21	Mirai 003 mini	Y	97	52	47	P -M

1. Plant Vigor Ratings: Visual assessment of plant vigor after germination. P = poor; M = medium; G = good; VG = very good.

Table 3. Saturated Salt Accelerated Aging in 2004

Variety #	Variety	% Germination	Comments
	SE
1	Trinity	92
2	Nantasket	90
3	Polka	88
4	Nauset	90
5	Precious Gem	96
6	BC 0805	90	moldy
7	Cinderella	78	moldy
8	Eureka (MXH 30407)	94
9	Ogunquit	92
	SH2's
10	Mirai 308BC	86
11	Mirai 327	32
12	Double Up	90
13	ACX 725BC	66
14	Mirai 301BC	86
15	ACX 1022BC	32
16	Tango	66
17	ACX 1075W	86	moldy
18	WSS 0987 Vp	62
19	ACX 642AW	54
20	Mirai 117Y	86
21	Mirai 003 mini	70

How Cold Can You Go

Sweet corn imported from southern states has improved in quality over the years but nothing beats the flavor of locally produced sweet corn. In the spring, growers are anxious to plant sweet corn as soon as they can in order to catch early markets, which usually provide higher revenue than mid-season or late markets. Planting early means growers take on additional risk because of cold soils and weather which usually inhibits corn germination and development. The thermo gradient test is a device to identify those cultivars, which might be better able to withstand cool germination conditions.

The Thermo Gradient Table Germination Test

Elaine Grassbaugh, Bob Precheur, Mark Bennett

Ten petri dishes for each cultivar with 10 seeds each on moistened blotter paper in each dish are placed on the thermo gradient table. The temperature on this table is divided into 10 zones or a temperature gradient as you move across the table from one side to the other side. Across the table, the temperature gradients are: 53.6, 57.2, 60.8, 64.4, 68, 71.6 75.2, 78.8, 82.4 and 86 ^oF. Germination in the dish is recorded at 3, 5, 7 and 10 days after placing the dishes on the table. The test is repeated 3 times or 3 replications.

Results

Table 4., on the next page, presents the complete thermo-gradient results. It provides the average percent germination of three replications for each of 10 temperatures at 3, 5, 7 and 10 days.

Table 5. is a summarization of table 4 for quick reference. In table 5, the temperatures have been averaged into 3 temperature ranges for quick analysis

Following Table 5, is a verbal description of the results.

Table 4. Complete Table of Thermo-gradient Results (Average, 3 reps)
[10 Temperatures and 4 Time Periods per Temperature]
Elaine Grassbaugh, Bob Precheur, and Mark Bennett
		Degrees C / Degrees F
Temperature Range		12/ 53.6				14/ 57.2				16/ 60.8
Days on Table		3	5	7	10	3	5	7	10	3	5	7	10
Variety	Type
SE
1. Trinity	Bi	0	0	0	0	0	0	0	0	0	0	0	26
2. Nantasket	Bi	0	0	0	0	0	0	0	3	0	0	3	26
3. Polka	Bi	0	0	0	3	0	0	0	6	0	0	6	43
4. Nauset	Bi	0	0	0	0	0	0	0	6	0	0	6	23
5. Precious Gem	Bi	0	0	0	0	0	0	0	0	0	0	16	46
6. BC 0805	Bi	0	0	0	0	0	0	0	0	0	0	3	6
7. Cinderella	White	0	0	0	0	0	0	0	0	0	0	10	46
8. Eureka (MXH 30407	Y	0	0	0	0	0	0	0	0	0	10	3	60
9. Ogunquit	Y	0	0	0	0	0	0	0	3	0	0	3	20
SH2
10. Mirai 308BC	Bi	0	0	0	0	0	0	0	6			3	33
11. Mirai 327	Bi	0	0	0	0	0	0	0	3	0	26	30	36
12. Double Up	Bi	0	0	0	0	0	0	0	0	0	0	6	46
13. ACX 725BC	Bi	0	0	0	0	0	0	0	0		0	0	0
14. Mirai 301BC	Bi	0	0	0	0	0	0	0	0	0	0	0	0
15. ACX 1022BC	Bi	0	0	0	0	0	0	0	0	0	0	0	23
16. Tango	Bi	0	0	0	0	0	0	0	0	0	0	0	10
17. ACX 1075W	White	0	0	0	0	0	0	0	0	0	0	0	33
18. WSS 0987 Vp	White	0	0	0	0	0	0	0	0	0	0	0	3
19. ACX 642AW	White	0	0	0	0	0	0	0	0	0	0	0	30
20. Mirai 117Y	Y	0	0	0	0	0	0	0	0	0	0	0	13
21. Mirai 003 mini	Y	0	0	0	0	0	0	0	3	0	0	6	23

Table 4. Complete Table of Thermo-gradient Results (Cont.)
	Degrees C / Degrees F
Temperature Range	18 / 64.4				20 / 68				22 / 71.6
Days on Table	3	5	7	10	3	5	7	10	3	5	7	10
Variety
1. Trinity	0	3	40	63	0	40	86	90	6	66	83	96
2. Nantasket	0	10	36	73	10	43	60	86	6	76	83	96
3. Polka	0	6	66	80	0	53	73	86	10	80	93	96
4. Nauset	0	30	60	70	6	50	86	90	30	96	96	100
5. Precious Gem	0	33	60	83	13	83	96	96	30	90	96	96
6. BC 0805	0	6	6	46	0	30	53	93	0	60	90	96
7. Cinderella	0	20	53	83	3	63	86	96	23	96	100	100
8. Eureka (MXH 30407	0	26	40	56	26	56	70	93	20	83	96	100
9. Ogunquit	0	26	53	86	10	53	90	96	26	80	90	100
10. Mirai 308BC	0	23	53	86	0	66	86	90	26	86	96	100
11. Mirai 327	0	16	40	70	3	53	73	86	40	93	100	100
12. Double Up	0	13	36	73	13	83	96	96	43	86	100	100
13. ACX 725BC	0	0	0	13	0	3	26	70	6	36	76	93
14. Mirai 301BC	0	0	6	16	0	3	16	30	0	26	50	80
15. ACX 1022BC	0	0	16	73	0	13	80	90	3	56	83	86
16. Tango	0	0	16	40	0	26	53	83	3	60	83	90
17. ACX 1075W	0	16	63	93	0	36	90	93	6	73	90	93
18. WSS 0987 Vp	0	0	43	56	0	33	73	83	0	80	90	90
19. ACX 642AW	0	0	33	50	0	16	73	90	0	60	86	86
20. Mirai 117Y	0	0	20	93	0	20	56	76	13	60	73	96
21. Mirai 003 mini	0	13	36	66	0	56	63	73	26	86	93	93

Table 4. Complete Table of Thermo-gradient Results (Cont.)
		Degrees C / Degrees F
Temperature Range		24 / 75.2							26 / 78.8				28 / 82.4
Days on Table		3		5		7		10	3	5	7	10	3	5	7	10
Variety
1. Trinity		26		86		93		96	56	100	100	100	76	100	100	100
2. Nantasket		20		90		100		100	36	96	96	96	46	96	96	96
3. Polka		23		93		100		100	53	90	93	96	93	100	100	100
4. Nauset		76		100		100		100	93	100	100	100	90	90	93	93
5. Precious Gem		66		96		96		96	86	96	96	96	90	100	100	100
6. BC 0805		13		96		100		100	83	100	100	100	76	96	100	96
7. Cinderella		46		90		96		96	83	96	100	100	86	96	96	96
8. Eureka (MXH 30407		36		90		96		96	56	100	100	100	70	100	100	100
9. Ogunquit		56		100		100		100	70	100	100	100	80	96	96	96
10. Mirai 308BC		66		100		100		100	90	96	96	96	90	96	96	96
11. Mirai 327		66		96		96		96	83	100	100	100	93	100	100	100
12. Double Up		66		90		93		93	96	96	100	100	93	100	100	100
13. ACX 725BC		10		73		93		96	40	100	100	100	53	90	93	93
14. Mirai 301BC		10		46		90		100	26	86	100	100	60	100	100	100
15. ACX 1022BC		23		86		96		96	66	86	98	93	60	60	90	90
16. Tango		46		76		93		90	70	93	100	100	76	100	100	100
17. ACX 1075W		46		96		96		96	73	96	96	96	90	96	96	96
18. WSS 0987 Vp		36		96		93		90	90	100	100	100	100	100	100	100
19. ACX 642AW		30		86		90		90	60	96	96	96	70	86	90	90
20. Mirai 117Y		30		93		96		96	63	100	100	100	73	93	96	100
21. Mirai 003 mini		66		93		96		96	83	90	90	90	83	86	90	90
Table 4. Complete Table of Thermo-gradient Results (Cont.)
	Degrees C / Degrees F
Temperature Range	30 / 86
Days on Table	3		5		7		10
Variety
1. Trinity	86		96		96		96
2. Nantasket	90		100		100		100
3. Polka	73		93		96		96
4. Nauset	100		100		100		100
5. Precious Gem	83		100		100		100
6. BC 0805	53		96		100		96
7. Cinderella	80		96		96		96
8. Eureka (MXH 30407	80		100		100		100
9. Ogunquit	86		96		96		96
10. Mirai 308BC	100		100		100		100
11. Mirai 327	90		93		93		93
12. Double Up	96		100		100		100
13. ACX 725BC	56		100		100		100
14. Mirai 301BC	66		96		100		100
15. ACX 1022BC	73		96		96		96
16. Tango	90		93		93		96
17. ACX 1075W	96		96		96		96
18. WSS 0987 Vp	90		90		90		90
19. ACX 642AW	76		86		86		86
20. Mirai 117Y	66		93		96		96
21. Mirai 003 mini	76		83		83		83

Table 5. Germination Response of Sweet Corn Cultivars on The Thermo-Gradient Table

			Percent Germination
	Temperature Range		57 - 61 ^oF				64 - 68 ^oF				> 72 ^oF
	Days on Table		3	5	7	10	3	5	7	10	3	5	7	10
	Variety	Type
	SE's
1	Trinity	Bi-se	0	0	0	9	23	23	63	76	50	89	94	98
2	Nantasket	Bi-se	0	0	1	9	27	27	48	80	40	92	95	98
3	Polka	Bi-se	0	0	2	14	30	30	70	83	50	91	96	98
4	Nauset	Bi-se	0	0	2	8	42	42	73	80	79	96	98	99
5	Precious Gem	Bi-se	0	0	5	15	58	58	78	90	71	96	98	98
6	BC 0805	Bi-se	0	0	1	2	19	18	35	70	45	90	98	98
7	Cinderella	W-se	0	0	3	14	42	41	71	90	64	95	98	98
8	Eureka (MXH 30407)	Y-se	0	3	1	20	13	41	55	75	52	95	98	99
9	Ogunquit	Y-se	0	0	1	7	3	40	71	91	64	94	96	98
	SH2's
10	Mirai 308BC	Bi-sh2	0	01	1	11	0	45	70	88	74	96	98	98
11	Mirai 327	Bi-sh2	0	10	10	12	1	35	56	78	74	96	98	98
12	Double Up	Bi-sh2	0	0	2	15	7	48	66	85	79	94	99	99
13	ACX 725BC	Bi-sh2	0	0	0	0	0	1	12	41	33	80	92	96
14	Mirai 301BC	Bi-sh2	0	0	0	0	0	1	17	23	32	71	88	96
15	ACX 1022BC	Bi-sh2	0	0	0	8	0	6	47	72	45	77	92	92
16	Tango	Bi-sh2	0	0	0	3	0	13	35	62	57	84	94	95
17	ACX 1075W	Bi-sh2	0	0	0	11	0	26	67	95	62	91	95	95
18	WSS 0987 Vp	Bi-sh2	0	0	0	1	0	11	58	70	63	93	95	95
19	ACX 642AW	Bi-sh2	0	0	0	10	0	8	53	70	47	83	90	90
20	Mirai 117Y	Y-sh2	0	0	0	4	0	10	38	60	49	88	92	98
21	Mirai 003 mini	Y-sh2	0	0	2	8	0	35	50	70	67	88	90	90

Summarization of Results on the Thermo-gradient

• At 54 degrees, there was no sign of germination, even after 10 days.

• At 57 to 61 degrees, germination percentages after 10 days were all below 20 %. The highest percentage was 20% for an se yellow Eureka.

• At 64 to 68 degrees, after 7 days, only 1 se variety with 75% germination or greater was se bicolor: Precious Gem. Only one sh2 variety with 70 % germination was Mirai 308 BC.

• At 64 to 68 degrees, after 10 days, those se varieties with 80% germination or greater were: Nantasket, Polka, Nauset, Precious Gem, Cinderella and Ogunquit. Those sh2 varieties woth 80% germination or greater were: Mirai 308 BC, Double Up, and ACX1075W.

• At 72 degrees and higher, percent germination after 5 days was 80% or higher for all varieties except Mirai 301 BC, and ACX 1022BC.

• BOTTOM LINE: Be sure to invest in soil thermometers so you know your soil temperature when it comes time to plant. At least for the varieties tested here, soil temperatures in the upper 60's to near 70 degrees are required for decent germination and plant establishment. Follow weather patterns and predictions for cold wet weather may require that you delay planting. The critical period is the first 24 hours after planting when cold wet weather can rapidly reduce % germination.

Table 6. Yield of Se Sweet Corn¹, Celeryville - 2004

7.5 inch spacing

ID #	Variety	Color	Days	Marketable Dozen/A	Crates /A	Tons/A	Harvest Ease	Ear Height	Source
1	Trinity	Bi	75	2015	402	6.6	E	15-20	CR
2	Nantasket	Bi	75	1966	399	9.3	E	30-33	MM
3	Polka	Bi	81	1887	377	5.6	E	18-25	MM
4	Nauset	Bi	81	2234	446	8.1	VH, wire like	32-35	MM
5	Precious Gem	Bi	81	2268	453	9.0	E-M	28	MM
6	BC 0805	Bi	88	2268	453	9.8	M	32-36	SY/RG
7	Cinderella	W	81	1960	392	7.5	E	Low, 25-28	CR
8	Eureka (MXH 30407)	Y	81	2014	403	9.0	E	23-28	MM
9	Ogunquit	Y	81	2286	457	10	E-M	22-25	MM
	LSD 0.05%			346.0	69	1.9

1. Key to Table Categories

Days: number of days from planting to harvest.

Crates/A: 5 dozen per crate.

Harvest Ease: Refers to ease of pulling, E = easy, M = medium, H = hard to pull.

Ear Height: Height from ground to base of first ear in inches.

Table 6 (cont.). Ear Characteristics of Se Sweet Corn¹, Celeryville – 2004

7.5 inch spacing

ID #	Variety	Ear Length	Ear Width	Flag Leaves	Tip Cover	Husk Tightness	Tip Fill	Shank	Raw Flavor
1	Trinity	7.2	1.6	4	1.8	1.75	1.2	2-4	G
2	Nantasket	7.6	1.7	L 6-8	2	2.1	1	4	G
3	Polka	7.3	1.6	4-6	1.7	1.8	1.5	2-3	G
4	Nauset	8.3	1.5	8-12	2	2	1.2	L, 8 WIRY	G
5	Precious Gem	8.0	1.5	S 3-4	2.1	2	1.4	10	G
6	BC 0805	8.5	1.8	S 2-3	3	2	1.8	L -6	VG, Tender
7	Cinderella	7.9	1.6	S 3-4	2	2	1	S - 5	G
8	Eureka (MXH 30407)	7.2	1.8	L 8-10	2.4	2	1.9	2	G
9	Ogunquit	8.7	1.8	L 8-10	2	2.3	1.1	8	G-VG
	LSD 0.05%	0.32	0.13

1. Key to Table Categories

Ear Length and Ear Width: Average length of 10 husked ears in inches.

Flag leaves: Length in inches. S = 2 to 4; M = 4 to 6; L 6 to 8 or greater.

Tip Cover: 1 = exposed; 2 = 1 inch covered; 3 = 2 inches covered.

Husk Tightness: 1 = loose; 2 = firm; 3 = tight.

Tip Fill: 1 = filled; 2 = unfilled 1 inch or less; 3 = unfilled greater than 1 inch.

Shank: typical length in inches

Raw Flavor: Raw eating quality as determined at harvest. P = poor, M = medium, G = good, VG = very good, E = excellent;

Pericarp rating (sometimes follows raw flavor ranking): tp = tough pericarp, vtp = very tough pericarp.

Table 7. Yield of Sh2 Sweet Corn¹, Celeryville – 2004

7.5 inch spacing

ID #	Variety	Color	Days	Marketable Dozen/A	Crates /A	Tons/A	Harvest Ease	Ear Height	Source
10	Mirai 308BC	Bi	75	1833	366	7.3	M	25-27	CT
11	Mirai 327	Bi	81	2087	417	9.6	M	24-27	CT
12	Double Up	Bi	81	2087	417	9	M	26-28	SY/RG
13	ACX 725BC	Bi	81	2123	424	9.4	E	20-28	AC
14	Mirai 301BC	Bi	88	2069	413	10	M-H	36	CT
15	ACX 1022BC	Bi	81	1361	272	4.9	E	26-28	ST
16	Tango	Bi	88	2196	439	9.6	E	21-25	AC
17	ACX 1075W	W	81	2069	413	8.6	M - H	34-36	AC
18	WSS 0987 Vp	W	88	2268	453	9	M	34	SY/RG
19	ACX 642AW	W	88	1778	355	7.9	E	18-22	AC
20	Mirai 117Y	Y	75	2032	406	7.8	E	20	CT
21	Mirai 003 mini	Y	75	1397	279	4.4	E	27-30	CT
	LSD 0.05%			413	82	1.6

1. Key to Table Categories

Days: number of days from planting to harvest.

Crates/A: 5 dozen per crate.

Harvest Ease: Refers to ease of pulling, E = easy, M = medium, H = hard to pull.

Ear Height: Height from ground to base of first ear in inches.

Table 7 (cont). Ear Characteristics of Sh2 Sweet Corn¹, Celeryville – 2004

7.5 inch spacing

ID #	Variety	Ear Length	Ear Width	Flag Leaves	Tip Cover	Husk Tightness	Tip Fill	Shank	Raw Flavor
10	Mirai 308BC	8.0	1.7	3-4	1.75	2	1.0	3-5	G-VG
11	Mirai 327	8.4	1.3	6-9	2	2	1.0	3-5	VG
12	Double Up	8.3	1.7	4-7	1.8	2	1.25	4-6	G, TP
13	ACX 725BC	7.9	1.8	4-6	1.87	1.8	1.5	6	G-VG
14	Mirai 301BC	8.2	2.0	L 6-8	2.25	2	1.0	2-5	VG
15	ACX 1022BC	7.9	1.6	L 6-10	2	2	1.2	3	G-VG
16	Tango	8.1	2.0	L	1.75	1.7	1.8	3-5	G-VG, crunchy
17	ACX 1075W	8.1	1.7	L	1.9	2	1.0	S-M	G-VG
18	WSS 0987 Vp	7.2	1.8	L 6-8	1.9	2	1.0	3-4	G-VG, crunchy & tender
19	ACX 642AW	8.1	1.8	L 6-8	1.75	2	1.75	L	M-G
20	Mirai 117Y	8.2	1.6	3-6	1	2	1.0	4	VG
21	Mirai 003 mini	6.2	1.5	4	2.1	2	1.0	2	VG
	LSD 0.05%	0.39	0.36

1. Key to Table Categories

Ear Length and Ear Width: Average length of 10 husked ears in inches.

Flag leaves: Length in inches. S = 2 to 4; M = 4 to 6; L 6 to 8 or greater.

Tip Cover: 1 = exposed; 2 = 1 inch covered; 3 = 2 inches covered.

Husk Tightness: 1 = loose; 2 = firm; 3 = tight.

Tip Fill: 1 = filled; 2 = unfilled 1 inch or less; 3 = unfilled greater than 1 inch.

Shank: typical length in inches: S = 2 to 4; M = 4 to 6; L 6 to 8 or greater.

Raw Flavor: Raw eating quality as determined at harvest. P = poor, M = medium, G = good, VG = very good, E = excellent;

Pericarp rating (sometimes follows raw flavor ranking): tp = tough pericarp, vtp = very tough pericarp.

Table 8. Yield of Se Sweet Corn¹, Canal Winchester - 2004

9 inch spacing

ID #	Variety	Color	Days	Marketable Dozen/A	Crates /A	Tons/A	Harvest Ease	Ear Height
2	Nantasket	Bi	75	1397	280	6.4	E	30-33
3	Polka	Bi	71	1198	240	4.2	E	15-25
4	Nauset	Bi	81	1669	333	6.7	VH	32-35
5	Precious Gem	Bi	81	1887	377	8.4	E-M	28
6	BC 0805	Bi	81	1815	363	8.3	M	32-36
7	Cinderella	W	81	1887	377	8.2	E	25-28
	LSD 0.05%			403	80	2.5

1. Key to Table Categories

Days: number of days from planting to harvest.

Crates/A: 5 dozen per crate.

Harvest Ease: Refers to ease of pulling, E = easy, M = medium, H = hard to pull.

Ear Height: Height from ground to base of first ear in inches.

Table 8 (cont).. Ear Characteristics of Se Sweet Corn¹, Canal Winchester - 2004

9 inch spacing

ID #	Variety	Ear Length	Ear Width	Flag Leaves	Tip Cover	Husk Tightness	Tip Fill	Shank	Raw Flavor	Notes
2	Nantasket	7.2	1.9	L 6-8+	2.9	2.8	1.0	3-4	M-G
3	Polka	7.1	1.7	S 2-4	2.2	2.0	1.1	2-3	G
4	Nauset	7.9	1.7	6-8	2.0	2.0	1.7	4+	M	Wire like shank
5	Precious Gem	7.9	1.8	S 3-4	3.0	2.0	2.0	2-4	M-G	crunchy
6	BC 0805	7.9	1.6	S 2-3	3.0	2.2	1.5	L 4-6	G-VG	terrder
7	Cinderella	7.5	1.8	S 3-4	2.0	2.0	1.1	2	M-G
	LSD 0.05%	0.4	0.1		0.1	0.2	0.6

1. Key to Table Categories

Ear Length and Ear Width: Average length of 5 husked ears in inches.

Flag leaves: Length in inches. S = 2 to 4; M = 4 to 6; L 6 to 8 or greater.

Tip Cover: 1 = exposed; 2 = 1 inch covered; 3 = 2 inches covered.

Husk Tightness: 1 = loose; 2 = firm; 3 = tight.

Tip Fill: 1 = filled; 2 = unfilled 1 inch or less; 3 = unfilled greater than 1 inch.

Shank: typical length in inches

Raw Flavor: Raw eating quality as determined at harvest. P = poor, M = medium, G = good, VG = very good, E = excellent;

Pericarp rating (sometimes follows raw flavor ranking): tp = tough pericarp, vtp = very tough pericarp.

Table 9. Yield of Sh2 Sweet Corn¹, Canal Winchester – 2004

9 inch spacing

ID #	Variety		Days	Marketable Dozen/A	Crates /A	Tons/A	Harvest Ease	Ear Height
10	Mirai 308BC	Bi	72	1688	337	6.4	M	25-27
11	Mirai 327	Bi	72	1797	359	7.6	M	24-27
14	Mirai 301BC	Bi	72	1670	334	7.9	M-H	26-29
15	ACX 1022BC	Bi	74	1289	258	6.3	E	26-28
16	Tango	Bi	74	1488	298	6.8	E	21-25
17	ACX 1075W	W	78	1689	337	6.5	M	35
18	WSS 0987 Vp	W	80	1241	248	5.5	M	34
19	ACX 642AW	W	80	774	154	3.4	M	34
20	Mirai 117Y	Y	72	1252	250	5.6	E	28
21	Mirai 003 mini	Y	72	1470	294	4.9	E	27-30
	LSD 0.05%			519	103	2.2

1. Key to Table Categories

Days: number of days from planting to harvest.

Crates/A: 5 dozen per crate.

Harvest Ease: Refers to ease of pulling, E = easy, M = medium, H = hard to pull.

Ear Height: Height from ground to base of first ear in inches.

Table 9 (cont.). Ear Characteristics of Sh2 Sweet Corn¹, Canal Winchester – 2004

9 inch spacing

ID #	Variety	Ear Length	Ear Width	Flag Leaves	Tip Cover	Husk Tightness	Tip Fill	Shank	Raw Flavor	Notes
10	Mirai 308BC	7.5	1.7	3-4	1.3	1.4	1.0	2-3	VG
11	Mirai 327	8.2	1.7	L 6-9	2.0	2.0	1.2	3-5	VG	Tender kernels
14	Mirai 301BC	7.9	1.9	4-6	2.1	2.0	1.1	2-5	VG
15	ACX 1022BC	8.7	1.8	M	1.7	2.0	1.0	2-5	VG
16	Tango	8.3	1.9	M	1.9	2.3	1.5	2-5	VG
17	ACX 1075W	8.2	1.8	M	2	1	1	6	G
18	WSS 0987 Vp	7.1	1.8	M	1.6	1	1.8	5	VG
19	ACX 642AW	8	1.9	M	2	1.4	3	4-6	G
20	Mirai 117Y	7.7	1.8	3-4	1.3	1.7	1.1	3	G-VG
21	Mirai 003 mini	6.1	1.8	S	2.8	2.4	1.2	3	G-VG	crunchy
	LSD 0.05%	0.3	0.1		0.4	0.2	0.2

1. Key to Table Categories

Ear Length and Ear Width: Average length of 5 husked ears in inches.

Flag leaves: Length in inches. S = 2 to 4; M = 4 to 6; L 6 to 8 or greater.

Tip Cover: 1 = exposed; 2 = 1 inch covered; 3 = 2 inches covered.

Husk Tightness: 1 = loose; 2 = firm; 3 = tight.

Tip Fill: 1 = filled; 2 = unfilled 1 inch or less; 3 = unfilled greater than 1 inch.

Shank: typical length in inches

Raw Flavor: Raw eating quality as determined at harvest. P = poor, M = medium, G = good, VG = very good, E = excellent;

Pericarp rating (sometimes follows raw flavor ranking): tp = tough pericarp, vtp = very tough pericarp.

Table 10. Yield of Se Sweet Corn¹, New Albany - 2004

11 inch in-row spacing

ID #	Variety		Days	Marketable Dozen/A	Crates /A	Tons/A	Harvest Ease	Ear Height
1	Trinity	Bi	70	871	174	3.4	E	15-20
2	Nantasket	Bi	76	962	192	5.8	E	20-25
3	Polka	Bi	70	871	174	3.6	E	16-23
4	Nauset	Bi	80	1071	214	4.2	VH	25-28
5	Precious Gem	Bi	80	653	131	3.5	E-M	28-30
6	BC 0805	Bi	84	1107	221	6.1	M	28-32
7	Cinderella	W	80	744	149	3.6	E-M	15-17
8	Eureka (MXH 30407)	Y	76	762	152	3.4	E	23-28
9	Ogunquit	Y	80	1053	211	6.2	E-M	22-25
	LSD 0.05%			209	42	1.0

1. Key to Table Categories

Days: number of days from planting to harvest.

Crates/A: 5 dozen per crate.

Harvest Ease: Refers to ease of pulling, E = easy, M = medium, H = hard to pull.

Ear Height: Height from ground to base of first ear in inches.

Table 10 (cont.). Ear Characteristics of Se Sweet Corn¹, New Albany - 2004

11 inch in-row spacing

ID #	Variety	Ear Length	Ear Width	Flag Leaves	Tip Cover	Husk Tightness	Tip Fill	Shank	Raw Flavor
1	Trinity	7.1	1.7	4	2.5	1.5	1.2	2-4	G
2	Nantasket	7.5	1.8	L 8+	2.7	2.2	1.4	3+	M
3	Polka	7.2	1.8	4	2.9	2.0	1.0	3-5	G
4	Nauset	6.5	1.7	4	2.3	2.5	1.8	8-12, wire like	M-G
5	Precious Gem	8.5	1.8	3-6	2.0	2.0	1.0	3-5	G
6	BC 0805	8.6	1.8	4	2.9	2.2	1.0	4-6	VG, tender
7	Cinderella	6.9	1.8	4-6	2.9	2.2	1.4	3-4	M-G, tender
8	Eureka (MXH 30407)	7.6	2.0	2-4	2.0	1.4	1.0	2	M-G
9	Ogunquit	8.1	1.9	4-8	3.0	2.0	1.0	2-3	G, tender
	LSD 0.05%	0.5	0.1		0.2	0.3	0.4

1. Key to Table Categories

Ear Length and Ear Width: Average length of husked ears in inches.

Flag leaves: Length in inches. S = 2 to 4; M = 4 to 6; L 6 to 8 or greater.

Tip Cover: 1 = exposed; 2 = 1 inch covered; 3 = 2 inches covered.

Husk Tightness: 1 = loose; 2 = firm; 3 = tight.

Tip Fill: 1 = filled; 2 = unfilled 1 inch or less; 3 = unfilled greater than 1 inch.

Shank: typical length in inches

Raw Flavor: Raw eating quality as determined at harvest. P = poor, M = medium, G = good, VG = very good, E = excellent;

Pericarp rating (sometimes follows raw flavor ranking): tp = tough pericarp, vtp = very tough pericarp.

Table 11. Yield of Sh2 Sweet Corn¹, New Albany – 2004

11 inch in-row spacing

ID #	Variety		Days	Marketable Dozen/A	Crates /A	Tons/A	Harvest Ease	Ear Height
10	Mirai 308BC	Bi	76	817	163	3.2	M-H	23
11	Mirai 327	Bi	78	635	127	2.8	E	23-25
12	Double Up	Bi	78	889	177	4.7	M	26-28
13	ACX 725BC	Bi	78	1016	203	5.0	E	25-28
14	Mirai 301BC	Bi	80	962	192	5.1	M	30-35
15	ACX 1022BC	Bi	80	490	98	2.5	E-M	20
16	Tango	Bi	84	944	189	5.1	E	26-28
17	ACX 1075W	W	80	545	109	3.2	E	18-20
19	ACX 642AW	W	84	471	94	2.4	E	18-22
20	Mirai 117Y	Y	76	980	196	4.9	E	28-30
21	Mirai 003 mini	Y	76	526	105	1.9	E	20
	LSD 0.05%			246	49	1.3

1. Key to Table Categories

Days: number of days from planting to harvest.

Crates/A: 5 dozen per crate.

Harvest Ease: Refers to ease of pulling, E = easy, M = medium, H = hard to pull.

Ear Height: Height from ground to base of first ear in inches.

Table 11 (CONT.). Ear Characteristics of Sh2 Sweet Corn¹, New Albany – 2004

11 inch in-row spacing

ID #	Variety	Ear Length	Ear Width	Flag Leaves	Tip Cover	Husk Tightness	Tip Fill	Shank	Raw Flavor
10	Mirai 308BC	7.2	1.7	S 2-4	1.8	1.3	2.1	2	VG
11	Mirai 327	8.0	1.8	S 3-4	2.0	1.8	1.0	4	VG
12	Double Up	8.2	1.9	M 4-7	2.0	2.0	1.0	4-7	G, stp
13	ACX 725BC	7.6	1.9	M	1.5	1.5	1.1	6	VG
14	Mirai 301BC	7.6	2.0	L 6-10	2.0	2.0	1.3	6	VG, stp
15	ACX 1022BC	8.4	1.7	6-10	2.6	2.0	1.1	3	G, stp
16	Tango	7.6	1.9	4-8	2.1	2.0	1.4	4	VG, stp, crunchy
17	ACX 1075W	9.3	2.0	S 3-4	2.4	2.0	1.0	3-5	G-VG, crunchy
19	ACX 642AW	8.0	1.7	M 4	2.0	2.0	1.0	4-6	G-VG, stp, crunchy
20	Mirai 117Y	7.4	1.9	L 6-10	2.0	2.0	1.4	4-6	G-VG
21	Mirai 003 mini	6.8	1.8	6-8	3.0	2.0	1.0	2-3	VG-E
	LSD 0.05%	0.4	0.1		0.2	0.1	0.4

1. Key to Table Categories

Ear Length and Ear Width: Average length of husked ears in inches.

Flag leaves: Length in inches. S = 2 to 4; M = 4 to 6; L 6 to 8 or greater.

Tip Cover: 1 = exposed; 2 = 1 inch covered; 3 = 2 inches covered.

Husk Tightness: 1 = loose; 2 = firm; 3 = tight.

Tip Fill: 1 = filled; 2 = unfilled 1 inch or less; 3 = unfilled greater than 1 inch.

Shank: typical length in inches

Raw Flavor: Raw eating quality as determined at harvest. P = poor, M = medium, G = good, VG = very good, E = excellent;

Pericarp rating (sometimes follows raw flavor ranking): tp = tough pericarp, vtp = very tough pericarp.