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Group Title: Sweet corn cultivar trial, Zellwood, Florida
Title: 1979 Sweet corn cultivar trial, Zellwood, Florida
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Permanent Link: http://ufdc.ufl.edu/UF00075805/00002
 Material Information
Title: 1979 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-80-1 ( English )
Physical Description: Serial
Language: English
Creator: White, J. M.
Publisher: Central Florida Experiment Station, University of Florida
Publication Date: 1980
 Record Information
Bibliographic ID: UF00075805
Volume ID: VID00002
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




JUU


CFS
0- | Agricultural Research and Education Center
Sanford, Florida


Research Report CF80-1 July 23, 1979
H HUI,,'E ULBRARY!
1979 Sweet Corn Cultivar Trial, Zellwood, Florida
JUN 111 85
J. M. White
Assistant Horticultu P.S Univ. of Fo0t


Sweet corn is an important crop in Florida with a reported value of $49.2
million in the 1977-78 season. Florida is the nation's leading sweet corn producer
for fresh market with over 12 million crates. The leading spring cultivar in
central Florida for the past several years continues to be Gold Cup. Silver Queen
and Bonanza are planted for late spring harvest. Bonanza is the leading fall
cultivar in central Florida.

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.

Sixty-three sweet corn cultivars were evaluated in replicated trials in
Lauderhill muck soil in Zellwood in the spring of 1979. In addition, six
Sh2 or supersweet lines were evaluated in replicated trials. Seeds were hand
planted, one kernel per drop, nine inches apart on March 12 and 13 for the regular
trial. Five lines were planted on March 30 due to late seed arrival. The Sh2
lines were planted six inches apart on March 12. Three row plots, three feet wide
and 12 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 Vegedex at the rate of
three pounds material (3+3 Randox and Vegedex) per acre was applied to control
weeds. Methomyl was applied twice with ground equipment for budworm control and by
air from silking until harvest to control corn earworm. Some shank rot and
Helminthosporium were found at harvest, but the incidence was much lower than
expected. No fungicides were applied and 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. Yield data were taken by
counting the number of stalks required to obtain ten marketable first ears, then
the number of marketable second ears were counted. This method of evaluating yield
gave higher yields (dozen marketable ears per hectare) than expected or found under
commercial practice. The yield data should be used in comparison with other lines
in this trial and not as expected yields under commercial conditions. The first
harvest was on lay 23 and the last on June 12. Ears were counted and weighed with
husk off. 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.










In the last several years, Gold Cup has been the leading yellow cultivar in
the Zellwood area. In this test, 12 cultivars produced more marketable ears than
Gold Cup, but were not significantly greater. Six lines were significantly lower
than Gold Cup. The cultivars in Table 1 were arranged by the highest number of
dozen ears per hectare by harvest date with the earliest cultivars grouped first.

Seeds were obtained from the following sources:


A-1 Abbott and Cobb, Philadelphia, PA 19124

A-2 Asgrow Seed Company, Ames, IA 50010

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

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

Rl Robson Seed Farm, Hall, NY 14463

R-2 Rogers Brothers Company, Idaho Falls, ID 83401

S Seedway, Hall, NY 14463

T Otis S. Twilley Seed Co., Salisbury, MD 21801







Table 1. Average yield, ear size, and general characteristics of replicated sweet corn varieties, Zellwood, Florida, 1979.


Avg. Avg.
Doz. Avg. ear ear Avg.no. Eary
Days to ears/ husked length width row of tip No. Flagx Huskw StalkV Earu No. mkt.
CultivarZ Source harvest ha wt.(g) (cm) (cm) kernels fill flags length cover height (cm) ears/stalk

Hyb. 0714 K 70 3187 190 23.6 4.0 12.5 4.0 7.5 V 2.0 132.1 21.6 0.80
XP 2547BC A-2 72 3124 187 18.3 4.3 13.5 4.0 5.8 M 4.3 126.0 23.4 0.78
NCX 2022 F-2 73 4647 221 19.1 4.6 16.0 3.5 5.8 L 2.5 175.3 47.8 1.17
74-1763 R-2 73 3621 228 19.7 4.6 17.5 4.5 7.0 L 3.8 134.4 32.3 0.91
Reliance N 73 3064 192 17.6 4.6 16.0 4.0 6.3 M 3.0 114.8 28.2 0.77

69-1689 R-2 73 2951 205 19.0 4.6 15.5 4.8 7.0 L 4.5 129.3 18.8 0.74
Borealls K 73 2529 171 17.3 4.2 13.0 4.3 6.0 L 3.5 123.7 19.1 0.63
Exp. 5641 N 74 4275 212 19.7 4.5 15.5 3.8 8.3 L 4.8 181.6 46.2 1.07
Bellringer H 74 3794 151 17.9 4.1 14.5 3.8 8.5 L 5.0 141.7 29.7 0.95
74-3044 R-2 74 3729 257 19.9 4.9 17.5 2.8 6.5 L 3.8 175.3 46.5 0.94

Exp. 5657 N 74 3064 219 17.3 4.7 19.0 4.0 9.8 V 4.5 167.9 38.6 0.77
Exp Hyb. BE1266 H 74 2951 155 17.8 4.0 15.5 3.5 6.5 L 5.0 131.6 19.1 0.74
Exp. 5651 N 74 2951 220 16.2 4.8 18.0 3.8 8.8 L 4.8 157.7 42.9 0.74
74-1921 R-2 75 2774 168 18.1 4.3 17.0 3.0 7.5 L 5.0 133.9 13.0 0.70
01158 F-2 77 3604 194 18.8 4.3 16.0 3.0 9.3 L 4.3 150.6 24.4 0.90

XPH 2532 A-2 77 3541 190 19.0 4.3 17.5 3.5 10.3 M 2.8 156.7 33.3 0.89
XP 2500 A-2 77 3346 194 20.8 4.3 17.0 3.3 9.0 L 4.3 143.0 27.2 0.84
Starlet S 77 1630 162 17.9 4.1 16.0 4.3 8.3 L 2.8 141.0 26.9 0.41
Gold Cup H 78 4255 169 19.6 4.3 15.5 2.8 7.3 V 5.0 156.2 36.3 1.07
Golden Gleam H 78 3984 176 22.0 4.1 13.5 3.5 6.0 V 2.8 171.7 50.8 1.00

Exp Hyb. H12166 H 78 3637 148 17.4 3.9 16.0 4.0 6.0 M 3.0 118.3 23.6 0.91
XP 2537 A-2 78 2781 168 16.8 4.0 18.0 2.5 10.3 L 3.5 160.3 27.9 0.70
76-2944 R-2 80 4268 250 20.5 4.9 18.0 3.3 5.3 V 3.3 158.8 42.2 1.07
ACX 123 A-1 80 3712 241 22.0 4.8 17.5 3.5 7.3 V 4.5 178.8 42.2 0.93
Exp. 77H121 S 80 3541 192 22.0 4.0 13.5 4.3 10.8 L 1.5 165.9 30.7 0.89






Table 1., cont'd.


Avg. Avg.
Doz. Avg. ear ear Avg. no. EarY
Days to ears/ husked length width row of tip No. Flagx Husk Stalkv Earu No.mkt.
Cultivar Source harvest ha wt.(g) (cm) (cm) kernels fill flags length cover height (cm) ears/stalk

E 4219 F-1 80 3531 205 20.2 4.3 14.0 4.5 6.3 V 1.3 156.0 32.8 0.89
Exp. Hyb 207 H 81 3789 217 20.1 4,4 16.5 4.0 8.0 L 5.0 157.7 35.8 0.95
Wintergreen A-2 81 3699 193 20.3 4.2 15.5 3.3 8.5 L 3.0 147.8 31.8 0.93
Earli-Queen R-2 81 2036 176 15.7 4.4 18.0 4.8 6.5 V 2.5 151.6 32.3 0.51
8-3416 F-1 83 5406 246 21.7 4.6 16.5 4.8 8.5 V 4.5 208.5 56.4 1.36

Exp. 4798 N 83 5311 235 20.3 4.5 12.5 4.3 6.5 M 3.3 153.2 41.4 1.33
Bonanza F-1 83 4566 263 21.7 4.6 18.5 4.8 9.0 L 4.5 164.3 41.4 1.15
Buttersweet K 83 4372 272 20.1 5.0 19.5 3.3 8.8 L 3.5 177.5 55.6 1.10
Hyb. 77517 H445 H 83 4363 221 20.2 4.5 13.5 3.3 7.5 I 3.8 172.2 48.8 1.10
01114 (A,B,C) F-2 83 4335 210 20.6 4.4 14.7 5.0 9.7 L 3.7 166.6 30.8 1.09

Epic F-2 83 4183 259 21.2 4.7 18.5 4.3 8.0 V 3.3 170.9 38.9 1.05
NCX 2021 F-2 83 3886 227 17.8 4.6 13.0 4.0 8.3 M 1.5 169.2 46.5 0.98
72-2945 R-2 83 3794 217 19.6 4.4 15.0 3.3 6.8 S 3.8 161.8 28.2 0.95
76-2683 R-2 83 3794 279 20.8 4.9 17.5 3.5 9.8 L 4.3 189.7 43.2 0.95
NCX 2009 F-2 83 3724 260 20.6 4.8 16.0 5.0 7.0 M 4.5 167.1 44.2 0.93

Golden Belle F-2 83 3706 258 22.2 4.7 15.5 5.0 9.0 L 3.0 167.4 33.8 0.93
76-2883 R-2 83 3699 236 21.7 4.5 18.5 3.8 6.8 V 1.5 171.7 38.4 0.93
8-3410 F-I 83 3541 226 19.3 4.7 15.5 5.0 7.3 M 4.0 172.5 49.8 0.89
NCX 2028 F-2 83 3428 233 20.3 4.7 14.5 3.5 7.8 L 3.0 146.3 29.5 0.86
Gatorgold A-1 83 2656 193 20.9 4.2 15.5 4.0 7.8 L 2.3 133.4 22.1 0.67

Lightnin A-1 84 4346 203 19.2 4.3 13.5 5.0 6.8 V 3.8 180.6 44.7 1.09
Hyb. 8-3414 F-1 84 4282 241 21.0 4.6 17.5 4.8 6.3 S 3.3 170.4 45.2 1.08
RXP 201 R-1 84 3984 210 20.2 4.3 14.5 4.3 10.5 L 4.0 163.6 36.1 1.00
XP 2536 BC A-2 84 3984 274 22.7 4.8 17.0 4.3 7.0 L 3.8 159.3 36.6 1.00
XP 2501 BC A-2 84 3984 261 21.9 4.6 16.0 4.3 8.8 L 4.8 147.8 32.5 1.00

Guardian A-2 84 3891 213 20.9 4.3 15.0 4.5 9.8 L 3.3 157.2 34.8 0.98
TWX 795W T 84 3884 233 21.2 4.5 13.5 4.8 7.3 L 2.0 158.0 48.0 0.98
XP2527 A-2 84 3712 224 20.7 4.3 14.5 4.8 6.8 M 3.3 154.7 41.9 0.93
Silver Queen A-1 84 3637 217 19.5 4.4 14.5 4.0 6.8 H 4.0 156.5 45.7 0.91
Goldenrod F-2 85 3320 261 22.8 4.6 14.5 5.0 7.0 V 2.3 175.3 40.6 0.83






Table 1., cont'd.


Avg. Avg.
Doz. Avg. ear ear Avg. no. Eary
z Days to ears/ husked length width row of tip No. Flagx Husk Stalkv Earu No.mkt.
Cultivar Source harvest ha wt.(g) (cm) (cm) kernels fill flags length cover height (cm) ears/stalk

Silver Queen R-2 86 3886 229 19.3 4.7 15.0 5.0 7.8 L 5.0 146.6 57.7 0.98
XP2534BC A-2 86 3794 229 20.4 4.7 14.0 5.0 5.5 M 3.5 162.3 41.4 0.95
RXP 231 R-1 87 4553 278 23.4 4.8 17.5 5.0 6.8 M 1.5 178.3 45.2 1.14
EXP,77H82 S 87 3895 247 20.6 4.7 15.0 5.0 9,3 L 1.5 161.0 19.6 0.98
Golden Queen R-2 87 3577 255 19.2 5.0 14.5 4.8 7.5 L 3.3 163.3 49.8 0.90

Silver Queen-
white silk R-2 88 3794 264 20.4 4.7 15.0 5.0 7.5 L 1.3 148.3 48.5 0.95
Code 2 A-2 88 3613 245 18.4 4.7 15.5 5.0 6.0 L 2.0 175.8 54.1 0.91

Earli-Queen A-i Not harvested ears too short

LSD .05 +)374


Cultivars grouped by days to harvest and then ranked within each group by yield in dozens per hectare.


YEar tip fill:


1=over one inch of tip not filled; 5=1/4 or less of tip not filled.


XFlag length: V=variable; S=short;


M=medium; L=long.


Husk cover: 1=poor with exposed kernels; excellent with one inch or more cover.
VStalk height from ground to base of tassel.
UEar height from ground to base of ear.







Table 2. Average yield, ear size, and general characteristics of Sh2 type sweet corn cultivars, Zellwood, Florida, 1979.


Avg. Avg.
Doz. Avg. ear ear Avg. no. Eary
Days to ears/ husked length width row of tip No. Flagx Huskw StalkV Earu No. mkt.
Cultivarz Source harvest ha wt.(g) (cm) (cm) kernels fill flags length cover height (cm) ears/stalk

Sugarloaf N 74 3794 213 18.4 4.7 15.5 2.0 6.0 M 4.3 154.4 42.4 0.95
Sugarloaf A-1 84 3893 251 20.9 4.7 15.0 4.0 5.8 M 4.5 151.9 41.1 0.98
76-3787 R-2 84 3794 220 21.2 4.4 14.0 4.0 5.8 S 3.5 169.7 56.4 0.95
76-3779 R-2 84 3531 155 18.7 4.0 14.5 3.5 5.8 V 5.0 166.6 57.7 0.89
Candyman K 84 3377 185 19.9 4.3 16.5 4.5 7.0 L 4.8 123.7 30.7 0.85
Staysweet A-1 84 3187 180 18.9 4.2 16.0 4.0 6.3 V 5.0 144.0 54.1 0.80

LSD .05 +1215


a
Cultivars grouped by days to harvest and then ranked within each group by yield in dozens per hectare.
YEar tip fill: lover one inch of tip not filled; 5=1/4 or less of tip not filled.


Flag length:


V=variable; Sishort; M=medium; L=long.


WHusk cover: 1=poor with exposed kernels; excellent with one inch or more cover.
VStalk height from ground to base of tassel.
UEar height from ground to base of ear.




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