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Group Title: Sweet corn cultivar trial, Zellwood, Florida
Title: 1978 Sweet corn cultivar trial, Zellwood, Florida
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Title: 1978 Sweet corn cultivar trial, Zellwood, Florida
Series Title: Sweet corn cultivar trial, Zellwood, Florida
Translated Title: Research report - UF Agricultural Research and Education Center ; CF-79-01 ( English )
Physical Description: Serial
Language: English
Creator: White, J. M.
Publisher: Central Florida Experiment Station, University of Florida
Publication Date: 1979
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Bibliographic ID: UF00075805
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 144607373

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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





CAF
C' -\ Agricultural Research and Education Center
Sanford, Florida

Research Report CF 79-01 July 31, 1978


1978 Sweet Corn Cultivar Trial, Zellwood, Florida


J. M. White
Assistant Horticulturist

Sweet corn is an important crop in Florida with a report vlue 1 .4.1
million in the 1976-77 season. Florida is the nation' leading sweet corn pro ucer
for fresh market with almost 12 million crates. The 1 adingjs .i.g cuE ivar i4
central Florida for the past several years continues t be Gold Cup. Silver Q een
and Bonanza are planted for late spring harvest. Bona za is the leading fal
cultivar in central Florida. F.A.S. Univ. of $!o"!

There is interest in improving the quality, yield, and disease resistance of
sweet corn. With several new and improved cultivars being developed and marketed,
it becomes important to evaluate new lines for their adaptability to central
Florida's growing conditions. This trial was designed to test new lines and
established cultivars.

Fifty-eight sweet corn cultivars were evaluated in replicated trials in
Everglades mucky peat soil in Zellwood in the spring of 1978. In addition, eight
processing and nine Sh2 or supersweet lines were evaluated in replicated trials.
Seeds were hand planted, one kernel per drop, nine inches apart on March 15 for the
regular trial. The processing lines were planted on March 16. The Sh2 lines were
planted six inches apart on March 18. Single row plots, three feet wide and 20 feet
long were harvested for record. Four replications 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. Methoryl
was applied twice with ground equipment for budworm control and by air from silking
until harvest to control corn earworm. Three applications of M-45 were used on a
weekly basis, but the first application was late for prevention. A heavy infestation
of bacterial stalk and shank rot was noted just before tasseling. Due to a heavy
mite infestation, a blight and shank rot rating was not practical. Some shank rot
and Helminthosporium were found at harvest, but the incidence was much lower than
expected. A wind and rain storm about ten days before tasseling followed by three
weeks of dry weather may account for the infection and then slow development. No
economic loss could be attributed to disease.

Plots were harvested as close to optimum maturity as possible. Each cultivar
was harvested once when the majority of ears were ready. The first harvest was on
May 22 and the last on June 5. 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 com-
pletely 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-


In the last several years, Gold Cup has been the leading yellow cultivar in the
Zellwood area. In this test, 28 cultivars produced more marketable ears than Gold
Cup, but were not significantly greater. Only lobelle was significantly lower than
Gold Cup. Gold Cup, Bonanza, Early Queen, EXP 2403, Goldie, Hyb 76-2883 and
Hyb 76-2944 suffered stand losses due to bird damage. Their yields may reflect
this damage and should be considered when comparing these cultivars. The
cultivars in Table 1 were arranged by the highest number of dozen ears per acre
by harvest date with the earliest cultivars grouped first.

Table 2 has the data for the eight processing cultivars. No significant
differences were found between the number of ears or the unhusked ear weights.

Table 3 has the data for the nine Sh2 lines tested. Candy Bar and Exp. 1036
were significantly lower in yield than the check Fla. Stay Sweet.


Seeds were

A-i

A-2

C

E

F-1

F-2

H

K

N

R-l

R-2

S


obtained from the following sources:

Abbott and Cobb, Philadelphia, PA 19124

Asgrow Seed Company, Ames, IA 50010

Charter Research, Inc., Caldwell, ID 83605

AREC-Belle Glade, P. 0. Drawer A, Belle Glade, FL 33430

Ferry-Morse Seed Co., San Juan Bautista, CA 95045

FMC Corporation, El Macero, CA 95618

Joseph Harris Company, Rochester, NY 14624

Keystone Seed Company, Hollister, CA 95023

Northrup, King and Company, Minneapolis, MN 55413

Robson Seed Farm, Hall, NY 14463

Rogers Brothers Company, Idaho Falls, ID 83401

Seedway, Hall, NY 14463




w w


TABLE 1. Average yield, ear size, and general characteristics
Zellwood, Florida, 1978.


of replicated sweet corn varieties,


Avg. ,,
Doz. Wt.y unhusked Avg. Avg.x Avg.No. Earw No.
Days to ears/ tons/ eat wt. ear ear row of tip No. Flag Husku Stalk Ears mkt.ears/
Cultivarz Source harvest acre acre lb. length width kernels fill flags length cover height stalk


XP 2501 A-2
Reliance N
Borealis A K
Aztec A-2
Hyb 72-3097 R-2

EXP 0174 K
ACX 123 A-1
E 4219 F-1
EXP 2403 N
Goldie N

Epic F-2
74-1921 R-2
NCX 2009 F-2
75-2016 R-2
Gold Cup H

Hyb 74-2133 R-2
Hyb 76-2883 R-2
Hyb 76-2944 R-2
Gator Gold A-1
E 4220 F-i

Omega N
Bonanza F-1
76-2570 R-2
74-1763 R-2
RXP 214 R-1


68
68
68
68
72

72
72
72
72
74

76
76
76
76
76

76
76
76
76
76

76
76
76
78
78


1270
1225
1195
1130
1224

1210
1075
997
982
1043

1270
1250
1229
1224
1149

1133
1073
1028
998
982

982
877
846
1269
1239


7.6
7.3
7.1
6.8
3.7

4.5
5.0
4.6
5.0
4.5

6.4
6.0
6.1
6.1
4.8

5.9
5.1
6.o
4.1
4.6

4.2
4.6
5.0
5.5
5.2


.93
.60
.55
.94
.51

.62
.77
.78
.85
.71

.84
.8o
.76
.83
.74

.87
.71
.78
.68
.79

.71
.88
.98
.72
.70


20.8
17.7
17.4
19.1
16.1

23.0
21.7
18.8
19.5
20.3

20.2
20.0
20.2
19.9
19.3

20.2
21.8
20.5
19.5
21.0

19.0
20.7
20.1
19.7
19.1


4.8
4.3
4.4
4.3
4.4

4.2
4.4
4.1
5.2
4.3

4.6
4.8
4.8
5.0
4.5

4.4
4.5
4.9
4.2
4.2

4.3
4.4
4.8
4.6
4.6


14.5
16.5
14.0
16.0o
16.0o

12.0
14.o
15.5
16.5
16.5

18.0
16.0
18.5
18.5
16.5

14.5
17.5
19.0
16.5
14.0

17.2
17.5
18.5
16.5
18.0


3.7
3.0
4.0
4.0
4.0

2.5
3.2
4.2
2.5
2.7

2.0
2.2
4.5
2.7
2.5

1.0
3.0
2.2
4.5
5.0

1.7
4.0
2.7
4.0
2.5


5.0
6.5
8.0
6.5
4.2

2.5
6.0
6.0
5.5
5.5

5.0
6.0
4.5
6.0
5.2

5.0
5.7
3.7
5.7
6.0

5.3
5.0
4.8
7.0
4.7


5.0
2.5
2.5
3.2
2.7

2.5
3.7
4.0
3.0
3.0

3.0
3.5
4.0
1.5
4.0

2.2
2.2
1.5
4.2
4.2

1.5
4.2
3.5
2.5
3.5


a---
4.2

4.7
5.5

4.3
6.5
5.6
4.9
5.3

8.0
4.4
5.2
5.4
5.0

4.8
5.8
5.0
4.4
5.9


4.9
6.6
4.7


2.1

2.8
1.7

1.0
1.7
1.9
1.0
1.8

2.0
1.5
2.2
1.5
1.9

2.1
2.5
1.9
1.4
2.1


1.7
2.0
1.8


.86
.89
.88
.87
.85

.86
.81
.77
.85
.91

.96
.93
.91
.85
.88

.92
.89
.78
.75
.79

.71
.88
.67
.97
.97




w


TABLE 1, Cont'd.


Days Avg.
to Doz. Wt. unhusked Avg. Avg.x Avg.No. Ear No.
har- ears/ tons/ eat wt. ear ear row of tip No. Flag Husku Stalkt Ears mkt.ears/
Cultlvar Source vest acre acre lb. length width kernels fill flags length cover height stalk

RXP 232 R-1 78 1209 5.9 .82 20.8 4.6 17.5 3.5 5.5 V 1.7 --- --- .94
Hyb 72-2945 R-2 78 1194 4.3 .69 19.3 4.7 16.5 2.2 4.5 L 2.2 5.5 1.4 .91
Bi-queen R-2 78 1163 4.5 .65 18.4 4.6 16.0 3.5 4.2 L 3.0 --- -93
Goldenrod F-2 78 1134 4.8 .70 21.7 4.4 15.0 2.7 5.0 S 3.7- -- 88
Sweet Tenn. K 78 1103 5.1 .78 18.1 4.7 18.0 4.5 4.0 S 3.0 --- .89

E 4229 F-1 78 1103 4.5 .67 18.7 4.4 17.0 2.5 4.5 S 2.2 -- 85
Buttersweet K 78 1088 4.9 .75 18.6 4.7 17.2 1.5 3.5 2.7 -- .86
ACX 124 A-1 78 862 4.2 .81 19.3 4.7 18.0 2.0 4.7 L 3.5 5.5 1.4 .70
Carmelot S 78 846 3.9 .78 19.3 4.7 12.5 2.5 4.0 V 3.7 --- -- .76
Golden Queen R-2 79 1451 5.9 .68 17.5 4.2 14.5 2.7 4.0 L 3.7 -- 1.20
RXP 201 R-1 79 1261 5.5 .78 19.8 4.7 16.0 3.7 5.2 L 2.5 .-78
Hyb 74-3044 R-2 79 1254 5.9 .79 19.3 4.6 18.0 2.5 5.5 L 3.2 --- .98
Lancer S 79 1088 5.1 .91 20.5 4.5 14.5 4.5 4.5 L 4.0 -- -- .65
Early Queen A-i 79 982 3.9 .66 18.1 4.3 14.0 2.7 4.2 V 4.0 6.6 2.6 .87
NC 2020 F-2 79 967 4.0 .68 20.0 4.6 16.0 1.5 4.2 S 3.2 --- -- .82
Slendergem S 79 947 2.9 .59 17.5 3.9 13.0 3.5 4.0 M 2.0 --- -- .71
Gold Lady S 79 906 3.3 .62 20.8 4.2 12.0 5.0 4.0 L 4.0 5.7 2.0 .81
Exp 77H79 S 79 846 3.6 .69 19.3 4.5 16.0 2.7 5.2 L 2.5 --- --- .74
Hyb 76-2683 R-2 80 1376 8.6 .88 19.2 5.2 18.5 3.2 5.7 L 4.0 6.9 2.3 .90
ACX 808 A-I 80 1224 5.8 .79 18.9 4.8 18.0 3.2 5.5 L 4.2 5.0 2.0 .88

XP 2413 A-2 81 1224 7.2 .98 19.6 5.1 18.0 2.2 4.5 L 4.7 5.5 2.2 .90
XP 370 A-2 82 1315 6.6 .83 21.2 4.5 16.5 4.5 5.5 L 4.2 5.2 2.0 .93
RXP 243 R-1 82 1315 5.6 .70 17.9 4.7 16.0 4.2 5.2 V 3.7 6.0 2.2 .96
XP 2505 A-2 82 1270 7.1 .93 20.5 4.9 16.0 2.0 5.7 L 4.7 5.6 1.6 .93
Hyb 71-2287 R-2 82 1269 7.1 .98 19.3 4.8 18.5 3.7 3.2 S 4.5 6.4 2.5 .95







- TABLE 1. Cont'd.


Days y Avg.- .
to Doz. Wt. unhusked Avg.x Avg. Avg.No. Ear No.
har- ears/ tons/ eat wt. ear ear row of tip No. Flagv Husku Stalkt Ears mkt.ears/
Cultivar Source vest acre acre Ib. length width kernels fill flags length cover height stalk


Cherokee A-2 82 1224 5.4 .72 19.6 4.3 16.0 5.0 5.0 L 4.0 6.0 2.0 .93
XP 2527 A-2 82 1209 5.3 .72 20.4 4.3 17.5 3.7 4.5 L 3.7 5.2 1.6 .86
Wintergreen A-2 82 1194 5.2 .72 20.0 4.4 16.0 3.7 6.0 L 3.7 5.1 1.4 .66
ougar Loaf N 82 1119 4.7 .69 19.8 4.6 18.0 2.7 3.7 L 3.7 5.6 2.1 .93
Hallmark N 82 1088 6.7 .97 20.0 5.2 18.5 2.7 6.0 L 3.5 --- --- .90

lobelle F-1 82 825 4.4 .90 19.8 4.7 16.6 3.6 5.3 L 4.3 5.7 1.8 .76
Silver Queen R-2 83 1239 6.2 .83 18.6 4.8 16.5 3.2 4.2 V 4.7 6.5 2.6 .96
starlet S 83 952 4.9 .84 19.7 4.8 16.0 3.8 5.5 L 3.0 ..--- .92

LSD .05 308 1.42

ZCultivars grouped by days to harvest and then ranked within each group by yield in dozens ears per acre.
YTons per acre of unhusked ears.
xAverage ear length and width measured in centimeters for husked ears.


WEar tip fill:
VFlag length:


lover one inch of tip not filled; 5=1/4 or less of tip not filled.
V=variable; S=short; M=medium; L=long.


uHusk cover: 1=poor with exposed kernels; excellent with one inch or more cover.
tStalk height from ground to base of tassel in feet.
SEar height from ground to base of ear in feet.






TABLE 2. Average yield, ear size,
Zellwood, Florida, 1978.


and general characteristics of processing tjpe sweet corn cultivars,


Cultivarz


Source


v A ---


&WV %a
to
har-
vest


Doz.
ears/
acre


Wt.y
tons/
acre


unhusked
eat wt.
lb.


Avg.x
ear
length


Avg.x
ear
width


Avg.No.
row of
kernels


Earw
tip
fill


No.
flags


Flag HuskU
1nn+-h nn wa


Stalkt Ears
% .g%4 rrl


No.
mkt.ears/
#%& 'l U


-- --- z s X LA C. 5 UJ4


H75201-38EH C
CXP504EH c
Kandy Korn EH C
Snow Queen EH C
Mainliner EH C
Bellsweet EH C
Iobelle EH C
Tendertreat EH C


LSD .05


76
76
76
76
81
81
81
81


854
781
827
847
885
816
832
765


5.2
4.0
4.2
4.8
5.1
4.6
4.6
4.0


1.01
.85
.85
.93
.97
.95
.93
.88


18.2
21.6
21.6
22.5
21.6
22.9
22.4
22.6


4.8
5.5
4.6
4.6
4.9
7.6
5.0
4.9


16.5
12.0
16.5
18.5
17.5
18.5
18.0
16.o


4.2
3.5
1.75
4.2
4.2
4.7
5.0
4.2


5.0
6.5
6.5
5.5
3.7
3.7
4.0
4.0


1.0
3.2
1.2
1.7
3.5
2.2
1.7
1.7


NS


6.7
6.8
6.7
6.7
7.3
6.9
6.6
7.7


2.0
3.0
1.9
2.1
2.6
2.6
2.0
2.2


.94
.86
.91
.93
.98
.90
.92
.84


TABLE 3. Average yield, ear size, and general characteristics of Sh2 type sweet corn cultivars,
Zellwood, Florida, 1978.

Candy Bar F-I 66 641 2.1 .55 17.9 4.4 14.5 4.0 5.7 L 3.7 3,6 .6 .71
Exp. 1036 K 69 611 2.6 .71 15.4 3.2 14.0 2.2 5.5 L 2.0 4.1 1.1 .67
Hyb.76--3787 R-2 74 848 4.5 .89 22.3 4.6 14.5 3.5 4.2 V 4.5 4.6 2.2 .93
Fla. Sweet E 74 813 4.1 .84 21.4 4.4 16.5 3.5 4.7 L 5.0 4.8 1.4 .90
Hyb. 76-3799 R-2 79 892 4.5 .84 20.5 4.7 14.0 5.0 4.5 M 3.2 --- .98
Fla.Staysweet E 79 942 4.3 .76 18.6 4.9 16.5 4.5 5.5 M 4.7 45 1.5 1.04
Hyb.76-3754 R-2 79 885 4.3 .82 20.5 4.7 14.5 4.5 3.5 S 4.5 --- 98
Candyman K 79 908 4.8 .88 18.6 4.9 15.5 5.0 5.2 L 4.7 --- --- 1.oo
Hyb. 76-3779 R-2 79 853 3.7 .71 18.9 4.3 14.5 2.0 4.7 L 5.0 5.5 2.0 .71
LSD .05 288 1.36


Footnotes same as for Table 1.


W




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