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Group Title: Sweet corn variety trials
Title: 1977 Sweet corn variety trial. Zellwood, Florida.
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Permanent Link: http://ufdc.ufl.edu/UF00075804/00004
 Material Information
Title: 1977 Sweet corn variety trial. Zellwood, Florida.
Series Title: Sweet corn variety trials
Translated Title: Research report - UF Agricultural Research and Education Center ; CF-78-1 ( English )
Physical Description: Serial
Language: English
Creator: White, J. M.
Publisher: Agricultural Research and Education Center, University of Florida
Publication Date: 1978
 Record Information
Bibliographic ID: UF00075804
Volume ID: VID00004
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 144607369

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HISTORIC NOTE


The publications in this collection do
not reflect current scientific knowledge
or recommendations. These texts
represent the historic publishing
record of the Institute for Food and
Agricultural Sciences and should be
used only to trace the historic work of
the Institute and its staff. Current IFAS
research may be found on the
Electronic Data Information Source
(EDIS)

site maintained by the Florida
Cooperative Extension Service.






Copyright 2005, Board of Trustees, University
of Florida












AGRICULTURAL RESEARCH AND EDUCATION CENTER
Sanford, Florida

Research Report CF 78-1 UMii

1977 Sweet Corn Variety Trials
Zellwood, Florida S 2 7 1977

J. M. White
Assistant Horticulturist ILFA.S. -Univ. of Florida

Sweet corn is an important crop in Florida with a reported value of 48.1
million dollars in the 1975-76 crop year. Central Florida sold over 11.7
million dollars of sweet corn in 1975-76. The leading spring variety in central
Florida for the past several years continues to be Gold Cup. There is interest
in improving the quality, yield, and disease resistance of sweet corn. With
several new and improved varieties being developed and marketed, it becomes
important to evaluate new varieties for their adaptability to central Florida's
growing conditions. This variety trial was designed to test new lines and
established varieties to learn how they would perform.

Fifty-three sweet corn varieties were evaluated in replicated trials and
four lines in non-replicated trials in Everglades mucky peat soil in Zellwood
in the spring of 1976. Three of the replicated lines were in a separate field
since they were Sh2 types.

Seeds were hand planted, one kernel per drop, nine inches apart on
March 21. Plots were two rows, three feet wide and 20 feet long. Four repli-
cations were used. Prior to planting, 600 pounds per acre of 5-5-8 fertilizer
was broadcast and disked to incorporate. A 2% parathion bait was used for
wireworm control at the rate of 40 pounds material per acre.

A 50-50 mixture of Randox and Vegadex at the rate of three pounds material
(3+3 Randox and Vegadex) per acre was applied to control weeds. Methomyl was
used on a daily basis from silking until harvest to control corn earworm.
Four applications of M-45 were used on a weekly basis on a preventative basis.
Minimal disease symptoms were noted.

Plots were harvested as close to optimum maturity as possible. Each
variety was harvested once when the majority of ears were ready. The first
harvest was on May 31 and the last on June 9. Ears were counted and weighed
with husk on. Ear length and width (diameter) measurements were taken from
a random sample of ten husked ears per replication. Ear tip fill was assigned
a value of five when completely filled and a value of one, if over one inch of
the tip was not filled. A value of less than 2.5 would be questionable for
commercial fresh market use.













--2--


Seeds were obtained from the following sources:

A Asgrow Seed Company, Ames, IA 50010
E AREC-Belle Glade, P. O. Drawer A, Belle Glade, FL 33430
F-2 FMC Corporation, EL Macero, CA 95618
H Joseph Harris Company, Rochester, NY 14624
K Keystone Seed Company, Hollister, CA 95023
N Northrup, King and Company, Minneapolis, MN 55413
R Rogers Brothers Company, Idaho Falls, ID 83401
S Seedway, Hall, NY 14463


In the last several years, Gold Cup has been the leading yellow variety
sweet corn grown in the Zellwood area. Nineteen of 50 lines were lower
in yield as measured by marketable ears per acre than Gold Cup (Table 1).
Two lines were found to be significantly lower in number of ears per acre.
Thirty lines had a higher yield than Gold Cup, but only one line, Exp 3516
(Sugar Loaf), was significantly higher in yield. Other high yielding lines
were Silver Queen, XP 370, Apache, and 72-2945. The varieties in Table 1
were arranged by the highest number of dozen ears per acre by harvest date
with the earliest varieties grouped first. Four lines were included in a
non-replicated trial (Table 2).

Three Sh2 lines of sweet corn were tested in replicated trials (Table 3).
ES 449R had the highest yield, but no significant difference in yield was found
at the .05 level.








TABLE 1.


Average yield, ear size, and general characteristics of replicated sweet corn
varieties, Zellwood, Florida, 1977.


SAvg. 3/ 1
Doz. t.- unhusked Avg.- Avg. Avg.No. Ear- 56 7/ N.
Days to ears/ tons/ eat wt, ear ear row of tip No. Flag-- Husk- Stalk- Ear- makt.ears/
Variety Source harvest acre acre lb. length width kernels fill flags length cover height stalk


75-2194
75-1767
Exp 2580
Aztec
NCX 2019


R
R
N
A
F-2


NCX 2012 F-2
122-Carmelet S
72-1683 R
Exp 3244 N7
71-1805 R


NCX 2009
75-1961
Gold Cup
Cherokee
Exp 3516

XP 370
Apache
Calumet
XP 372
XP 2527


F-2
R
H
A
N

A
A
A
A
A


XP 2526 A
L- 11 S
Epic F-2
Exp 2583 N
wintergreen A


71
71
71
71
71

71
71
71
71
71

74
74
74
74
77

77
77
77
77
77

77
77
77
77
77


1558
1558
1482
1392
1376

1346
1286
1180
1119
1059

1437
1422
1331
1240
1830

1588
1573
1543
1497
1482

1467
1467
1422
1407
1393


6.5
6.0
6.6
6.6
5.8

6.5
5.8
4.5
4.8
4.3

7.1
7.3
5.8
5.7
7.4

7.6
7.1
6.4
6.9
7.2

7.2
5.8
6.5
6.6
6.3


0.697
0.643
0.743
0.792
0.705

0.803
0.756
0.629
0.719
0.671

0.825
0.856
0.723
0.772
0.675

0.797
0.757
0.695
0.769
0.806

0.812
0.657
0.765
0.780
0.755


19.1
20.1
18.7
18.4
18.0

20.2
20.2
19.4
18.4
19.5

19.2
20.3
18.4
19.8
18.8

20.9
19.3
22.0
20.8
20.3

19.5
22.1
20.5
22.6
19.3


4.5
4.4
4.8
4.6
4.7

4.7
4.7
4.3
4.8
4.3

4.6
5.0
4.3
4.3
4.7

4.5
4.7
4.1
4.6
4.5

5.0
3.9
4.8
4.8
4.6


17.5
16.0
17.8
14.5
19.0

14.0
14.5
14.0
14.0
15.5

16.0
18.0
17.5
15.0
15.5

16.0
16.5
14.0
15.0
16.0

15.0
13.0
17.0
19.0
14.0


3.4
3.0
4.1
4.4
3.1

3.4
3.8
4.6
3.0
3.1

4.3
2.6
4.0
3.9
3.3

4.6
4.9
4.9
4.4
4.3

4.9
3.1
4.8
2.9
4.5


5.8
6.3
5.8
6.0
7.3

7.8
4.5
6.5
6.0
5.3

6.0
4.8
8.0
6.0
6.3

6.3
6.0
6.8
4.8
4.5

4.0
5.8
4.8
5.5
5.3


4.0
1.8
2.4
4.0
4.5

4.0
4.3
2.8
2.9
2.9

4.5
3.3
3.4
4.1
3.5

4.1
4.3
3.6
3.9
3.8

3.9
3.5
3.5
2.6
3.9


5.10
4.96
4.47
5.46
4.86

5.30
4.92
4.36
4.27
4.69

5.84
6.13
5.80
5.79
5.68

5.56
6.13
5.92
5.51
5.66

5.57
5.44
5.61
5.11
5.41


1.99
2.18
1.92
2.30
1.90

2.21
2.16
1.60
1.21
1.94

3.12
2.71
2.69
2.70
2.98

2.29
2.95
2.61
2.56
2.82

2.49
2.35
2.70
2.28
2.33


1.00
1.03
0.92
0.96
0.98

1.02
0.92
0.79
0.91
0.77

1.00
1.07
1.09
0.88
1.26

1.15
1.13
1.11
1.01
1.26

1.26
1.01
0.95
0.93
1.15






TABLE 1, Cont'd.


2/ Avg. 3/ .4/
Doz. Wt.- unhusked Avg.- Avg. Avg. o. Ea r o.
Days to ears/ tons/ ear wt. ear ear row of tip No. FlagS Husk:6 Stalk:/ Ear/ mkt.ears/
Variety Source harvest acre acre lb. length width kernels fill flags length cover height stalk

Golden Belle F-2 77 1346 6.3 0,779 21.4 4.8 16.5 4.9 6.0 V 4.1 5.89 2.81 0.97
XP 2525 A 77 1316 6.6 0.840 20.7 4.6 15.5 4.8 4.3 S 4.9 5.95 2.87 0.96
NCX 2020 F-2 77 1271 5.3 0.694 19.0 4.8 16.0 3.4 4.8 S 3.9 5.10 2.19 1.02
Butter Sweet K 77 1255 5.8 0.767 18.1 4.8 18.7 3.2 6.3 V 4.0 6.49 3.33 0.90
XP 2524 A 77 1255 6.7 0.886 19.4 4.8 18.5 4.4 4,8 V 3.6 5.31 2.65 0.99

Comet A 77 1253 6.4 0.847 20.9 4.7 14.5 4.6 4.5 V 4.3 5.79 2.96 0.89
Commander A 77 1210 5.6 0.770 20.8 4.6 16.5 3.5 6.5 L 3.0 5.33 2.99 1.10
Salute A 77 1195 5.3 0.744 20.5 4.5 15.0 3.9 6.0 V 4.0 5.08 2.11 0.91
111-8 S 77 1195 5.2 0.729 20.8 4.6 15.0 4.4 4.8 V 3.8 5.27 2.04 0.91
128-Starlet S 77 1180 5.7 0.808 20.5 4.9 15.5 4.8 6.3 V 2.3 5.24 2.13 0.89

Merit A 77 1059 5.8 0.911 21.6 5.2 19.0 3.9 6.0 S 2.3 6.03 2.83 0.85
75-2084 R 78 1497 7.1 0.772 21.5 4.8 17.0 4.8 3.3 S 2.1 5.64 3.29 1.24
XP 362 A 78 1482 7.5 0.846 18.9 4.6 15.5 4.0 6.0 M 4.9 5.44 2.75 1.01
71-2287 R 78 1452 6.0 0.688 19.8 4.6 17.0 3.4 1.8 S 3.3 5.70 2.60 1.13
70-2021 R 78 1422 5.3 0.626 21.0 4.4 15.0 2.4 3.0 S 3.5 5.45 2.83 1.11

72-2945 R 79 1573 6.5 0.689 19.0 4.5 14.5 3.1 5.0 V 3.0 4.85 2.29 1.20
74-3164 R 79 1392 8.5 1.015 24.0 5.2 17.5 3.1 4.8 S 4.4 5.21 2.47 1.14
BiQueen R 79 1376 6.4 0.770 19.3 4.8 13.5 3.9 4.8 V 4.8 6.14 3.19 0.97
Golden Queen R 79 1301 6.2 0.790 19.7 4.7 15.0 4.3 4.8 V 5.0 6.57 3.39 0.98
71-2297 R 79 1165 4.8 0.694 19.4 4.6 15.0 3.3 3.8 S 3.3 5.10 2.31 0.89

Silver Queen R 80 1618 7.5 0.770 19.1 4.7 15.0 4.1 4.5 V 3.9 6.47 3.13 1.08
Capitan A 80 1422 6.7 0.780 21.0 4.5 15.0 4.8 4.5 S 5.0 6.18 3.01 1.07
Exp 1791 N 80 1376 8.1 0.980 21.3 5.1 19.0 2.8 6.5 V 2.9 5.73 2.43 0.97
Exp Hyb 7597 K 80 998 4.9 0.817 20.1 5.0 18.0 2.3 4.5 V 3.8 5.35 2.69 0.93
Exp Byb 3841 K 80 681 3.3 0.818 18.4 4.8 16.5 4.8 6.3 L 3.4 5.59 2.54 1.18

LSD .05 332 1.5







TABLE 2. Average yield, ear size, and general characteristics of non-replicated sweet corn varieties,
Zellwood, Florida, 1977.

2 Avg.
Doz. rt.2- unhusked Avg ., Ag. Avg.No. Ear- /o.
Days to ears/ tons/ ear wt ear ear row of tip No. Fla Husk6/ Stalk-7 Ear-8 mkt. ears/
Variety Source harvest acre acre lb length width kernels fill flags length cover height stalk

79625 H 71 1271 5.2 0.676 20.9 4.4 14.0 3.5 5.0 M 5.0 6.00 3.00 1.05
D9315 H 72 1150 4.6 0.663 19.8 4.0 18.0 3.0 6.6 L 2.5 6.66 2.88 0.95
11445 H 77 1150 3.8 0.558 17.9 4.1 14.0 3.5 4.0 S 5.0 5.82 3.20 0.95
D125 H 78 908 4.2 0.773 19.8 4.3 16.0 5.0 4.0 H 5.0 5.90 2.12 0.63







TABLE 3.. Average yield, ear size, and general characteristics of Sh2 type sweet corn varieties,
Zellwood, Florida, 1977.


Fla. Sweet E 75 1210 6.6 0.909 21.5 4.6 16.0 5.0 8.0 L 4.8 5.66 2.80 1.33
ES 449R E 77 1301 6.9 0.883 19.6 4.5 17.3 5.0 6.3 V 5.0 5.41 2.76 1.43
Candyman K 77 1195 6.1 0.853 22.3 4.8 16.7 4.5 7.0 L 4.5 5.87 2.87 1.32


Varieties grouped by days to harvest and then ranked within each group by yield in dozens ears per acre.
Tons per acre of unhusked ears.
3
Average ear length and width measured in centimeters for husked ears.
4
Ear tip fill: l=over one inch of tip not filled; 5=1/4 inch or less of tip not filled.
Flag length: V-variable; S=short; l=medium; L=long.


Husk cover:


l=poor with exposed kernels: excellent with one inch or more cover.


7
Stalk height from ground to base of tassel in centimeters.
8
Ear height from ground to base of ear in centimeters.




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