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Group Title: Sweet corn variety trials
Title: 1975 Sweet corn variety trial. Zellwood, Florida.
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Permanent Link: http://ufdc.ufl.edu/UF00075804/00002
 Material Information
Title: 1975 Sweet corn variety trial. Zellwood, Florida.
Series Title: Sweet corn variety trials
Translated Title: Research report - UF Agricultural Research and Education Center ; CF-76-2 ( English )
Physical Description: Serial
Language: English
Creator: White, J. M.
Publisher: Agricultural Research and Education Center, University of Florida
Publication Date: 1976
 Subjects
Spatial Coverage: United States -- Florida -- Zellwood
 Record Information
Bibliographic ID: UF00075804
Volume ID: VID00002
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 76-2 .July 30, 1975

1975 Sweet Corn Variety Trials
Zellwood, Florida LIJ

J. M. White
Assistant Horticulturist

Introduction ""- f.-.

Sweet corn is an important crop in Florida with a reported value of 37. 7
million dollars in the 1973-74 crop year. Central Florida sold about 7.8
million dollars of sweet corn in 1973-74. The leading spring variety in central
Florida for the past several years has been Gold Cup. There is continuous
interest in improving the quality, yield, and disease resistances of crops.
With new and improved varieties being developed and marketed, it becomes
important to evaluate new varieties for their adaptability to central Florida's
growing conditions. A variety trial was designed to test new lines and
established varieties to learn how they perform.

Methods

Sixty-eight sweet corn varieties were evaluated in replicated trials on
Everglades mucky peat in Zellwood in the spring of 1975.

Seeds were planted, two kernels per drop, eight to nine inches apart on
March 31 and April 1. Plots were single rows, 3 feet wide and 18 feet long.
Five replications were used. Prior to planting, 600 lb. 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 lb. material per acre. Plants
were hand thinned to one plant per eight to nine inches.

A 50-50 mixture of Randox and Vegadex 20G at the rate of 30 lb. 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.

Plots were harvested as close to optimum maturity as possible. Each
variety was harvested once when the majority of ears were ready. Ears were
counted and weighed with husks on. Ear length and width (diameter) measure-
ments were taken on a random sample of ten husked ears. Ear tip fill was
assigned a value of 5 when completely filled and a value of 1 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, Iowa 50010
C Charter Research, Inc., Twin Falls, Idaho
F-1 Ferry-Morse Seed Company, Caldwell, Idaho 83605
F-2 FMC Corporation, El Macero, California 95618
H Joseph Harris Company, Rochester, New York 14624
K Keystone Seed Company, Hollister, California 95023
N Northrup, King and Company, Minneapolis, Minnesota 55413
R Rogers Brothers Company, Idaho Falls, Idaho 83401
S Seedway, Hall, New York 14463
T Otis S. Twilly, Salisbury, Maryland 21801

Results and Discussion

In the last several years, Gold Cup has been the leading yellow variety
sweet corn grown in the Zellwood area. Gold Cup was the highest yielder in
this test having produced 2,003 dozen ears per acre. Bellringer was second
with 1,869 dozen ears per acre. The first harvest was on May 29 and the last
harvest on June 10.

Sweet Sue produced the longest ear at 11.6 inches. Golden Beauty and
Sundance had ears 4.6 and 4.8, respectively. Three varieties had ears 9.0
inches long or longer. Eleven varieties had ears between 8.5 and 9.0 inches
long. There were four varieties with the average ear length of 6.5 inches or
less.

Golden Beauty also had the smallest diameter ears with the average width
of 1.4 inches. There were four varieties with the average ear width of 1.9
inches or more with variety 7597 being the largest at 2. 0 inches. Twenty-
eight varieties had an average ear width of 1.8 inches, which is on the large
size and may be questionable for fresh market. Six varieties had an average
ear width of 1.5 inches or less.

Twelve varieties had an ear tip fill rating of 2.5 or below. These varieties,
along with four which had a rating between 2.5 and 3.0, would have questionable
value as fresh market sweet corn.

Stalk height was measured from the ground to the base of the tassel. Eight
varieties were 4.0 feet or below. Six varieties were 6.0 feet or over with R-95
averaging 6.6 feet. The standard variety Gold Cup was 5.4 feet. The shortest
variety was Sundance at 3.1 feet.

Ear height was measured from the ground to the base of the ear. Forty-four
of the sixty-eight varieties had ears which averaged 2. 0 feet or less above the
ground. Gold Cup and NCX 243 had the greatest ear height with an average of
2.6 feet.

It is recognized and should be noted, this data represents one season's
results. The same variety under different environmental conditions may per-
form differently. The findings and results from this test are found in Table 1.





Table 1. Average yield, ear size, and general characteristics of replicated sweet corn varieties,
Zellwood, 1975.


w


Days Doz. (2) Avg. Avg. Avg. Ear Avg.no. Avg.(5) Avg.(6)
to ears/ Tons/ ear (3) ear(3) row of tip(4) stalks/ stalk ear
Variety(1) Source Harvest acre acre length width kernels fill 18" height height
Gold Cup H 65 2003 6.7 7.7 1.6 15.5 3.2 21.6 5.4 2.6
Bellringer H 63 1869 7.5 7.1 1.7 14.9 3.5 22.2 4.4 1.2
XP 358 A 70 1694 6.2 7.5 1.8 16.0 4.6 24.0 5.8 2.1
Golden Rod (N) F-2 71 1640 7.2 9.1 1.8 15.1 3.1 23.0 5.7 2.1
H 74204 E.H. C 71 1600 7.6 9.2 1.8 17.5 3.7 24.0 6.5 2.2

Exp. MS-4 S .64 1600 5.1 6.8 1.7 13.6 4.5 23.2 3.8 1.2
Apache A 70 1586 6.7 7.7 1.8 15.5 4.9 23.5 6.1 2.0
536/74 F-1 65 1560 4.5 8.2 1.6 17.7 3.7 23.0 5.0 1.5
44-82 H 70 1560 6.0 8.0 1.7 17.6 5.0 22.5 5.3 1.8
B124 H 64 1546 4.6 7.1 1.5 15.3 4.4 21.6 4.3 1.1

706-F16 N 59 1533 5.0 7.3 1.5 13.6 3.3 23.4 4.1 1.2
D332 H 69 1492 6.7 8.7 1.8 15.6 4.8 23.0 5.0 1.6
R-95 F-1 70 1479 6.3 8.3 1.6 15.2 5.0 23.0 6.6 2.2
1101 JL49 H 65 1465 5.5 8.4 1.5 15.9 2.9 21.5 5.4 1.9
R-55 F-1 65 1425 5.3 8.2 1.6 15.1 4.8 22.5 5.3 2.2

NCX 2004 F-2 65 1412 5.3 8.4 1.7 17.7 3.8 22.5 5.0 1.9
Rapidpak F-1 68 1412 5.4 8.0 1.8 18.2 1.9 21.5 4.5 1.3
4203 K 71 1412 6.0 7.8 1.8 16.1 4.6 23.0 5.6 2.2
4199 K 67 1398 6.2 8.3 1.8 17.1 4.4 23.0 5.4 2.2
4200 K 71 1398 6.1 8.6 1.8 15.1 3.4 22.5 3.4 2.1

4202 K 70 1385 5.5 8.4 1.8 14.9 4,0 22.5 4.0 1.8
7231 K 63 1371 3.6 7.5 1.7 13.7 4.1 23.4 3.8 1.0
Bicolor Silver Queen T 70 1371 6.3 7.4 1.9 13.7 3.8 22.5 5.4 2.2
Exp. MS-2 S 65 1358 5.1 7.8 1.8 16.3 4.5 24.5 4.2 2.2
4205 K 70 1344 5.8 8.8 1.9 15.3 2.5 20.5 5.8 2.4
7597 K 71 1344 5.5 7.9 2.0 17.9 1.0 22,5 6.0 2.4




W


w


Table 1. Cont'd.


Days Doz. (2) Avg. Avg. Avg. Ear Avg.no. Avg.(5) Avg. ()
(1) to ears/ Tons/ ear(3) ear(3) row of tip(4) stalks/ stalk ear
Variety. Source harvest acre acr le width kernels fill 18" height height ht


NCX 243
XP 371
Sweet Sue
568/74
Jubilee

Capitan
69-2588
XP 1343 A
Exp. MS-1
Exp. # 3


Merit
Golden Bell
XP 370
XP 1331
XP 346

Salute (XP 368)
4199
XP 1327W
AZTEC
31 HM

NCX 2014
XP 1329
536/74 4.5
4201
XP 185 A


F-2
A
H
F-1
C


A
F-2
A
A
A

A
K
A
A
H

F-2
A
F-I
K
H


65
69
70
70
70

67
67
59
65
73

67
67
70
65
68

70
71
71
59
63

67
65
70
71
73


1331
1331
1331
1318
1318

1304
1291
1277
1277
1277

1264
1264
1264


6.0
5.8
5.7
5.0
5.0

5.6
4.6
4.0
5.3
5.1

5.3
5.1
5.2


1250 4.2
1250 3.6


1250
1223
1223
1197
1197

1197
1183
1170
1170
1156


5.2
5.3
4.2
5.0
4.2

3.5
3.8
4.5
5.0
5.4


8.4
8.6
11.6
8.2
8.3

8.6
8.5
7.4
8.4
7.7

8.3
8.5
8.3
7.9
7.2

7.7
8.2
7.7
6.9
6.3

7.4
7.8
8.1
8.1
8.3


1.8
1.8
1.7
1.7
1.7

1.6
1.7
1.5
1.8
1.8

1.8
1.6
1.7
1.5
1.6

1.7
1.8
1.8
1.8
1.6

1.7
1.5
1.7
1.8
1.8


17.9 2.9
18,3 2.6
15.6 3.6
15.6 4.4
17.5 3.2


15.7
16. 3
13.5
15. 7
15.9

17.2
15.7
16. 3
14.9
14.1

18.8
15.9
15.7
13.9
14.9

18.0
13.6
15.5
15.5
15.9


4.2
3.2
2.9
4.3
4.7

3.6
4.4
4.4
4.4
3.6

4.0
4.4
2.5
2.0
3.8

4.0
4.0
4.2
4.9
4.8


22.5
21.5
20.0
20.0
21.0

23.0
23.5
23.0
22.0
20.5

23.5
23. 5
21.5
23. 5
22.5

22.0
22.5
24.0
22.0
20.4

23.0
22.5
21.0
22.0
22.5


5.8
5.0
5.4
5.7
5.8

5.7
4.7
4.-1
4.8
5.2

6.1
5.3
5.0
5.2
4.7

5.1
4.4
4.9
4.4
3.9

5.3
4.4
5,3
4.9
5.5


2. 6
1.8
1.8
1.7
1.8

2.2
1.6
1. 5
2.3
2.2

2.4
1.9
1.8
1.6
1.2

1.6
2.5
2.1
1.6
1.0

1.7
1.3
1.6
2.1
2.0




W


w


Table 1., Cont'd.


Days Doz. (2) Avg. Avg. Avg. Ear Avg. no. Avg.(5) Avg. (6)
to ears/ Tons/ ear (3) ear (3) row of tip(4) stalks/ stalk ear
Variety Source harvest acre acre length width kernels fill 18" height height
1791-F1 N 70 1143 5.6 8.3 1.8 18.0 2.0 23.0 5.0 1.5
XP 372 A 70 1129 5.7 8.8 1.8 16.6 4.7 21.5 5.2 2.2
Tendertreat C 72 1102 5.0 8.6 1.9 17.1 1.8 21.5 6.1 1.9
209/74 F-1 73 1089 4.2 7,6 1.8 15.9 3.7 23.0 5.1 1.6
640/74 F-1 67 1076 3,8 7.7 1.6 15.6 4.9 20.0 5.9 2.0

2583 F 16 N 70 1062 4.2 8.5 1.7 16.7 1.3 22.5 4.3 1.4
Sundance H 62 1035 8.7 4.8 1.6 13.2 4.1 23.0 3.1 0.7
2580 N 63 1022 4.4 6.2 1.7 15.3 3.3 21.6 3.6 1.1
NCX 2011 F-2 67 1022 2.0 7.9 1.8 15.9 3.3 23.0 4.9 1.9
668 N 69 995 4.0 8.2 1.6 16.5 3.5 21.5 4.7 1.6

Eversweet C 73 981 3.9 8.7 1.7 15.7 2.2 19.5 5.4 1. 5
569/74 F-1 70 968 3.5 8.0 1.6 16.8 4.7 22.0 5.7 1.7
Comet A 72 928 3.5 7.9 1.8 14.9 2.5 20.0 4.5 1.7
706-F16 N 73 901 3.7 7.8 1.7 16.3 4.6 21.0 5. 2.0
70-2021 R 73 887 3.0 7.9 1.8 15.3 1.0 22.5 5.7 2.0
XP 362 A 71 834 3.5 7.7 1.8 16.7 3.6 18.5 4.5 1.8
Golden Beauty
(Earligold) A 65 686 1.4 4.6 1.4 12.0 1.0 22.5 3.3 0.8
LSD .05 275 1.2
(1) Varieties ranked by yield in dozen ears per acre.


(2) Tons per acre of


unhusked ear.


(3) Average ear length and width measured in inches for husked ear.
(4) Ear tip fill; l=over one inch of tip not filled; 2=3/4 to 1 inch of the tip not filled;
3=1/2 to 3/4 inch of the tip not filled; 4=1/4 to 1/2 inch of tip not filled;
5=1/4 inch or less of tip not filled.


(5)
(6)


Stalk height from ground to base of tassel in feet.
Ear height from ground to base of ear in feet.




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