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Group Title: Sweet corn variety trials
Title: 1976 Sweet corn variety trial. Zellwood, Florida.
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Permanent Link: http://ufdc.ufl.edu/UF00075804/00003
 Material Information
Title: 1976 Sweet corn variety trial. Zellwood, Florida.
Series Title: Sweet corn variety trials
Translated Title: Research report - UF Agricultural Research and Education Center ; CF-77-1 ( English )
Physical Description: Serial
Language: English
Creator: White, J. M.
Publisher: Agricultural Research and Education Center, University of Florida
Publication Date: 1977
 Subjects
Spatial Coverage: United States -- Florida -- Zellwood
 Record Information
Bibliographic ID: UF00075804
Volume ID: VID00003
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 77-1 July 20, 1976

1976 Sweet Corn Variety Trials.... .
Zellwood, Florida j "' Li-i .

J. M. White /
Assistant Horticulturist SEr2l I
SEP 7 1977 I
Sweet corn is an important crop in Florida with a reported value of 45. 1
million dollars in the 1974-75 crop year. Central F1dgoldoer 10.6 mi ion
dollars of sweet corn in 1974-75. The leading spring'Variety-n T Aflif' lC l da
for the past several years has been Gold Cup. There is continuoTus 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-nine sweet corn varieties were evaluated in replicated trials in
Everglades mucky peat soil in Zellwood in the spring of 1976.

Seeds were hand planted, two kernels per drop, eight to nine inches apart on
March 24 and 25. Plots were single row, three feet wide and 20 feet long. Five
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. Plants were hand thinned to
one plant per eight to nine inches.

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.

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 24 and the last on June 11. 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
B W. A. Burpee Company, Philadelphia, PA 19132
C-1 Charter Research, Inc., Twin Falls, ID
C-2 Crookham Company, Caldwell, ID 83605
F-1 Ferry-Morse Seed Company, Caldwell, ID 83605
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
T Otis S. Twilly, Salisbury, MD 21801

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 1766 dozen ears per acre. Eight other varieties were
not found to be significantly lower in yield than Gold Cup. In tons per acre,
21 varieties were heavier than Gold Cup, but only XP 372 was significantly
heavier.

Hallmark had the heaviest unhusked average ear weight of 1. 140 pounds.
NCX 2010 had the lightest ear weight of 0. 488 pound. There were six varieties
with a weight of 0.9 pound or more and four varieties with 0.6 pound or less.

Tendertreat E. H. had the longest average ear length of 22. 9 cm. NCX 2015
was the shortest with 17. 3 cm. Seven varieties averaged 22 or more cm in length.

XP 362 had the widest average ears (diameter) with 5.5 cm. The thinnest
ears were NCX 2010 with 3.8 cm. Nine varieties were wider than 5.0 cm and
there were 36 varieties over 4. 5 cm and there were 36 varieties over 4.5 cm..
Only four varieties were less than 4.0 cm.

Three varieties had an ear tip fill rating of 2.5 or below. These, along with
six other varieties which had a rating between 2.5 and 3. 0, would have questionable
value as fresh market sweet corn. Fifteen varieties had a rating of 5. 0.

Eight varieties had a husk cover rating of less than 3.0 while 51 varieties
were rated at 3. 0 or above. Five varieties had a rating of 5.0.

Stalk height was measured from the ground to the base of the tassel.
Tendertreat E. H. had the tallest average stalk height of 218 cm. Exp. 3244
had the shortest stalk height of 116 cm. Only one variety was less than 122 cm
and only two were above 183 cm.











-3-

Ear height was measured from the ground to the base of the ear.
Tendertreat E. H. had the tallest ear height of 98 cm while Exp. 3244 had the shortest r
shortest of 22 cm. Gold Cup, the standard variety had a stalk height of 177 cm
and ear height of 60 cm. There were eight varieties with an ear height of 76 cm
or greater and 23 varieties with 61 cm or less.

Data on each of the 59 varieties are found in Table 1. The varieties were
arranged by the highest number of dozen ears per acre within three days to
harvest groups. The groups used were: 65 days and under; 66 to 74 days, and
75 days and over.








Table 1. Average yield, ear size, and general characteristics of replicated sweet corn varieties, Zellwood, FL, 1976.

Avg.
unhusked Avg3 Avg? Avg. no.
1 Days to Doz. Wt. in2 ear wt. ear ear rows of Ear tip4 No. Flag Husk6 Stalk7 Ear8
Variety Source harvest ears/A tons/A lb. length width kernels fill flags length cover height

Exp. 3244 N 61 1666 5.7' .588 19.1 4.1 13.5 3.5 4.4 V 4.3 116 22
Sundance H 62 1528 5.3 .573 17.9 4.1 15.5 5.0 4.8 V 4.6 132 37
NCX2010 F-2 61 1514 4.4 .488 19.0 3.8 16.2 5.0 5.0 L 4.3 156 52
NCX2015 F-2 63 1284 4.3 .567 17.3 4.2 15.4 4.4 6.4 L 5.0 141 39
Gold Cup H 71 1766 7.2 .682 19.3 4.2 17.2 4.6 7.6 V 4.9 177 60
Hyb. WH 115 H 69 1640 7.5 .764 18.3 4,8 18.2 5.0 7.0 L 3.9 150 39
Hyb. G 145 H 70 1574 7.2 .760 19.1 4.1 14.8 5.0 7.0 L 5.0 155 51
Bellringer H 71 1561 7.7 .826 18.9 4.3 15.4 4.9 8.6 L 5.0 155 45
68-2578 R 71 1520 7.6 ,838 18.7 5.1 19.4 2.9 7.0 V 3.5 173 70
NCX 2012 F-2 71 1519 8.2 .905 21.1 4.8 14.4 2.9 6.6 M 4.1 171 62
NCX 2016 F-2 71 1504 6.5 .724 18.6 4.7 16.8 4.7 6.2 L 2.4 170 63
Hyb W 795 H 71 1487 6.2 .695 19.7 4.2 16.6 3.9 6.2 L 4.8 163 58
HybEB 595 H 69 1487 6.4 .718 18.6 4.6 15.2 4.9 5.8 V 2.2 147 40
Hyb 207 H 71 1477 6.4 .717 19.5 4.2 17.6 4.8 6.0 L 4.8 172 72
Carmelet S 69 1459 6.4 .724 20.0 4.4 13.6 4,8 5.8 V 4.8 148 47
NK 199 N 71 1356 6.7 .829 19.4 5.1 18.8 2.9 7.0 V 3.1 187 66
E 4219 F-1 71 1327 5.4 .686 19.3 4.2 14.8 5.0 6.0 L 4.2 185 74
Pageant R 71 1305 6.5 .816 20.2 4.9 16.8 4.3 8.2 M 1.9 168 50
72-2093 R 71 1303 6.6 .843 18.9 5.1 16.8 4.5 6.2 V 2.6 160 52
Reliance N 69 1267 5.7 .759 19.0 4.9 16.8 4.2 7.0 V 1.9 142 49
E 4230 F-1 69 1241 5.7 .763 19.3 4.6 17.0 2.7 6.6 S 1.4 143 46
Starlet S 71 1198 5.5 .772 18.6 4.6 16.6 5.0 6.0 L 4.5 167 54
Hyb Borealis K 69 951 3.7 .656 19.2 4.3 16.0 4.8 6.6 L 3.3 139 52








Table 1. Cont'd.


Avg.
unhusked Avg. Avg3 Avg. no.
Days to Doz. Wt. in2 ear wt. ear ear rows of Ear tip4 No. FlagS Husl Stalk7 Ear
Variety1 Source harvest ears/A tons/A lb. length width kernels fill flags length cover height

Buttersweet K 76 1670 8.2 .822 20.8 5.1 19.4 2,5 8.4 V 2.7 191 86
XP 372 A 75 1598 8.6 .898 21.5 4,6 15.8 5.0 10.5 L 4.5 175 66
Comet A 77 1576 8.3 .875 21.8 4.7 15.6 4.5 7.6 L 4.6 160 69
Hyb 32-82 H 76 1528 8.0 .872 21.7 4.6 15.7 5.0 6.8 S 3,0 191 69
69-2588 R 75 1522 7.1 .786 20,7 4.6 17.2 4.3 9.4 L 4,9 151 60
Epic F-2 75 1519 8.5 .930 21.1 5.0 17.8 4.9 7.8 M 4.7 197 79
73-1999 R 75 1505 8.0 .876 20.2 5.3 19.2 3.0 7.8 L 3.3 164 66
E-4220 F-1 75 1485 7.1 .792 21.3 4.0 14.4 5.0 10.2 L 4.7 186 74
Hyb 83-41 H 75 1480 7.7 .868 22.0 4.4 15.2 4.9 9.4 L 3.9 149 62
Sugar Loaf N 75 1478 7.2 .812 19.8 4.9 16.4 4.3 8.6 V 3.5 175 73
White Delight T 77 1475 7.2 .809 21.6 4.0 12.4 4,7 7.0 L 3.9 179 82
74-3044 R 77 1455 8.1 .879 20. 4 5.0 19.0 5.0 8.2 L 4.3 182 72
lobelle B 77 1443 7.3 .836 21.1 4.5 17.5 5.0 8.2 V 4.6 173 72
Golden Belle F-2 75 1442 7.3 .823 21.2 4.6 17.0 5.0 10.6 L 3.6 171 53
Jubilee R 73 1438 6.8 .789 21.2 4.5 18.4 4.8 8. 0 V 3.8 190 76
XP 370 A 75 1422 7.7 .907 21.3 4.6 17.9 4.6 9.6 L 4.8 167 64
Bonanza F-1 75 1416 8.6 1.010 22.7 4.8 18.2 4.8 9.0 L 4.5 171 62
Icdt.'$Ergistic' C-2 75 1394 6.5 .770 19.3 4.6 17,8 4.3 9.4 L 4.7 170 65
Hyb. 58-41 H 76 1384 6.9 .832 22.6 4.5 15.2 4.7 8.2 V 4.7 153 54
Hallmark(1791) N 75 1376 8.4 1.140 21.8 4.8 20.2 3.7 12.2 L 4.7 180 65
XP 371 A 75 1372 7.2 .876 22.4 4.7 17.2 4.6 8.2 L 4,9 182 86
XP 362 A 77 1362 7.1 .862 21.0 5.5 17.2 4.9 7.4 V 4.4 177 80
568/74 F-1 77 1360 5.7 .689 20.6 4.0 15.6 4.8 5.8 M 3.8 181 61
Goldenrod F-2 75 1353 6.7 .824 23.3 4.3 14.8 4.9 9.0 L 4.3 196 83
E 4210 F-1 75 1349 5.7 .696 20.4 4.6 19.2 2.4 8.2 V 3.9 161 65











Avg.
unhusked Avg.3 Avg. Avg. no. 57 8
Days to Doz. Wt. in ear wt. ear ear rows of Ear tip No. Flag Husk6 Stalk Ear
VarietyI Source harvest ears/A tons/A Ib. length width kernels fill flags length cover height

Hyb 44-82 H 75 1347 5.2 .637 20.9 4.2 16.8 5.0 8 2 V 5.0 160 54
Winter
Market 86 F-1 75 1295 6.2 .799 22.0 4.3 15.8 4.9 9.2 L 4 0 184 66
Exp Hyb
3841 K 75 1258 5.4 .713 18.1 4.3 16.6 4.8 9.6 L 4.8 173 63
Seneca 185A H 77 1221 5.5 .751 21.6 4, 1170 5.0 8,4 L 5.0 172 65
70-2367 R 75 1216 5.7 .778 20. 0 4.6 19.1 2.9 8.8 V 4.4 185 73
536/74 F-1 75 1155 5.2 .750 20.2 4.3 16,2 5.0 5.6 M 4.2 175 61
Exy Hyb
3272 N 77 1098 5.4 .878 21.5 4.5 17.6 4.4 8.2 V 3.7 169 52
Hyb Sweet
Tenn. K 80 1698 8.4 .830 20.9 4.7 17.6 4.3 6.6 V 4.7 181 80
74-3045 R 81 1460 7.6 ,857 21.9 5.0 19.6 4,4 8.0 L 3.0 173 71
Tendertreat C-I 81 1409 8.3 .986 22,9 5.0 17.6 4.5 5.2 S 3.2 218 98
Exp Hyb 7597 K 80 1102 4.6 .734 20.4 4.9 18.2 2.0 8.0 L 4.2 177 69
LSD .05 231 1.3


Days to harvest and then ranked within each group by yield in dozen ears per acre.


2
Tons per acre of unhusked ears.
3Average ear length and width measured in centimeters for husked ears.
Average ear length and width measured in centimeters for husked ears.


4Ear tip fill:

5Flag length:
6Husk cover:


1=over one inch of tip not filled;


V=variable;


S=short;


M=medium


1=poor with exposed kernels;


5=1/4 inch or less of tip not filled.
i; L=long.


5=excellent with one inch or more cover.


7
Stalk height from ground to base of tassel in centimeters.
8*1- q. U .* a ^ V # a & do _


Varieties grouped by


Table 1.


Contid,




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