Group Title: Sweet corn variety trial.
Title: Sweet corn variety trial. Spring 1990.
ALL VOLUMES CITATION THUMBNAILS PAGE IMAGE ZOOMABLE
Full Citation
STANDARD VIEW MARC VIEW
Permanent Link: http://ufdc.ufl.edu/UF00075806/00003
 Material Information
Title: Sweet corn variety trial. Spring 1990.
Series Title: Sweet corn variety trial.
Translated Title: Research Report - University of Florida Institute of Food and Agricultural Sciences ; 91-03 ( English )
Physical Description: Serial
Language: English
Creator: Hancik, I. D.
White, J. M.
Neal, C. A.
Crnko, G. S.
Publisher: Central Florida Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida
Publication Date: 1990
 Record Information
Bibliographic ID: UF00075806
Volume ID: VID00003
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 144607375

Full Text





S- University of Florida S&~i: ...
O Institute of Food & Agricultural Sciences Lilrary
/ Central Florida Research & Education Center
Sanford, FL 32771 OCT2 1990

Research Report SAN-91-03 August 1990

Sweet Corn Variety Trial, Spring 1990 -- -..

I. D. Hancik, J. M. White, C. A. Neal, & G. S. Crnko

A supersweet (shrunken-2 and sugary enhanced) sweet corn variety trial was
conducted at Lust Farms, Inc., Apopka, FL, and Scott Farms, Inc., Lake Jem, FL,
during the spring of 1990. A yellow/bicolor/white kernel color trial was planted
on the organic (muck) soil at Lust Farms; a trial limited to white
cultivars/breeding lines was planted on the sandy soil at Scott Farms.

The kernels of sh2 type sweet corn have at least 2-3 times the total sugars
of normal sweet corn at optimum harvest; conversion of sugar to starch is also
much slower, facilitating extended storage and long-distance shipping. Sugary
enhanced (se) sweet corn contains about 15% more sugar at peak harvest than
normal sweet corn and has a more tender pericarp than sh2 types; these types are
especially well-suited for roadside and fresh-market sales.

Florida remains the nation's leading producer of fresh-market sweet corn.
In light of the widespread use of supersweet corn by growers and a shift in
consumer preference toward supersweet types, it is important to evaluate
commercially available and advanced breeding lines for their adaptability to
central Florida's growing conditions.

Materials and Methods

The muck and sand trials were planted on March 15, 1990, and March 21,
1990, respectively. Seeds were planted by hand in single-row 3' wide x 20' long,
plots (muck trial) and two-row (6' wide x 20' long), plots (sand trial) with 9"
in-row spacing. Three replications were arranged in a randomized complete block
design.

Cultural practices, provided by the cooperating grower, are comparable to
the routine practices used by commercial growers to produce a sweet corn crop in
central Florida.

Plots were harvested by hand at peak maturity, beginning May 23, 1990, and
ending June 1, 1990. Only first ears were harvested and individual plots were
harvested only once. Ears were counted and weighed; subsamples of 10 marketable
ears/plot were selected, husked, and evaluated for length, width, maturity, tip
fill, husk cover, and kernel color (Tables 1-3). Weather data are recorded in
Table 4.









Results and Discussion


Yellow/Bicolor Trial (muck)

Sweet corn yields, expressed as 42 lb crates/acre, ranged from 47-491
crates/acre. High yielding cultivars included Calico Belle, Melody, Challenger,
GSS 3170, and XPH 2663. Three of these entries (Calico Belle, Melody, and XPH
2663) were sugary enhanced (se); Challenger and GSS 3170 were sh2 types. The
lowest yield (47 crates/A) was obtained with How Sweet It Is. BSS 3636 produced
stunted plants which never fully developed.

Percent marketable ears ranged from 69 (BSS 3714, Butterfruit Bicolor, GSS
3612, 7410Y, Honey & Pearl, and Sunex 2643) to 100 (Calico Belle).

Considerable variation in ear size/shape was recorded. Ear length (in)
ranged from 6.97 (GSS 3617) to 8.53 (XPH 2663); ear diameter (in) ranged from
1.65 (EREC BC52, Sunex 2643, GSS 3617) to 2.00 (Butterfruit Bicolor).

Among the five top-yielding cultivars, Challenger, GSS 3170, and XPH 2663
matured at 69 days while Melody and Calico Belle were slightly later, maturing
at 70 and 71 days, respectively. Calico Belle was the only bicolor line in the
top five lines; however, it was somewhat weak in tip fill.

White Trial (muck)

Sweet corn yields, expressed as 42 lb crates/acre, ranged from 203-396
crates/acre. High-yielding cultivars included WH 3132, XPH 3017, Snow Belle, and
EREC XPW23. Three of these entries (WH 3132, XPH 3017, and Snow Belle) were
sugary enhanced (se); EREC XPW23 was an sh2 type. The lowest yields were
obtained from EREC XPW4 (sh2), WSS 4341 (sh2), and Even Sweeter (sh2).

Percent marketable ears ranged from 57 (EREC XPW4) to 99 (XPH 3017).
Average ear length (in) ranged from 6.62 (XPH 2654) to 8.00 (WH 3132); ear
diameter (in) ranged from 1.69 (Even Sweeter) to 1.93 (WH 3132).

Among the five top-yielding cultivars, WH 3132, XPH 3017, and Snow Belle
matured at 69 days while EREC XPW23 and Alpine were slightly later, maturing at
71 days.

White Trial (sand)

Sweet corn yields ranged from 101-357 crates/acre. Of the five top-
yielding cultivars in the sand trial, four of these entries (WH 3132, XPH 3017,
Snow Belle, and Alpine) also finished in the top five in the muck trial; all four
lines were se, sugary enhanced, type. Low yielding lines included WH 3125 and
WSS 4341; these entries produced only 30 and 40% marketable ears, respectively.

Even Sweeter and EREC XPW6-2 had poor husk cover as evinced by a green
coloration of the ear tip. However, husk cover was not a problem with EREC WPW6-
2 in the muck trial.

This report is not intended to recommend one variety over another, but
rather is meant as a general guideline for variety selection. Different field









locations, planting dates, and cultural practices may alter the performance of
these sweet corn lines; growers should be mindful of this variability when
selecting a new variety and small test areas of new varieties may be advisable.

Seeds were obtained from the following:

AC Abbott & Cobb, P. 0. Box 'F' 307, Feasterville, PA 19047
AM Amsa Seed Co., P. O. Box 5301, Modesto, CA 95352
AS Asgrow Seed Co., 1811 East Florida, Nampa, ID 83651
EV Everglades REC, IFAS, P. O. Box 8003, Belle Glade, FL 33430-1101
PS Park Seed Co., Wholesale Division, Highway 254, Greenwood, SC 29647-0001
RB Rogers Bros., P. O. Box 80, Idaho Falls, ID 83402
SU Sun Seeds, P. O. Box 1438, Hollister, CA 95024

Explanation of Table Headings:

crates per acre yield expressed as 42-1b crates containing 4.5-5 dozen ears.
calculated by extrapolating from the average yield of three 60 ft2
plots/rows to yield per acre (43560 ft2).
ear length & width measurements taken on husked ears, an average value of a ten
ear sample
tip fill 0-at least 1" of unfilled kernels at tip; 5-full at tip
husk cover 1-ear protrudes from husk; 5-ear is tightly wrapped and completely
covered
notes/comments sides-side ears that form at the base of the main ear; yellow,
white, bicolor-kernel color; flags-flag leaves on ear







Yellow/Bicolor sweet corn cultivar evaluation Lust Farms, Zellwood, FL, 1990.


Crates/ Market- Avg. ear
Endo- Days to acrez able length diam. Tip Husk
Cultivar sperm Source harvest (42#) (%) ---(in)--- fill cover Notes/comments


Calico Belle
Melody
Challenger
GSS 3170
XPH 2663

Billy #1
Butterfruit
AMX 34036
7630Y
XPH 2688

7620Y
Pronenator
Showcase
Sunex 2644
7210Y

Sunex 2577
BSS 3714
Sweet Belle
GSS 3590
GSS 4312

GSS 3485
EREC XPH7
GSS 3617
Sunax 2642
XPH 2687

ERE XPH 12-2
XPH 2640
771 Y
77Q BC
ER, XPH15


se
se
sh2
sh2
se

sh2
sh2
sh2
sh2
sh2

sh2
sh2
sh2

sh2


sh2
sh2
sh2
sh2

sh2
sh2
sh2

sh2

sh2
sh2
sh2
sh2
sh2


AS
AS
AS
RB
AS

AM
PS
AM
AC
AS

AC
AM
RB
SU
AC

SU
RB
AS
RB
RB

RB
EV
RB
SU
AS


491 a
467 ab
425 a-c
422 a-c
406 a-c


70
69
71
75
71

71
71
72
71
69

69
71
71
69
69

69
71
71
71
70


386
379
375
375
370

361
353
351
347
345

341
340
335
335
328

327
327
324
323
316


a-c
a-d
a-d
a-d
a-d

a-d
a-d
a-d
a-d
a-d

a-d
a-d
a-d
a-d
a-d

a-d
a-d
a-d
a-d
a-d


100
96
97
88
89


86
86
86
85
92

96
92
77
83
75

84
69
82
82
72

79
83
84
81
77


314 a-d
308 a-d
308 a-d
307 a-d
303 b-d


0


7.59
8.05
7.95
8.18
8.53

8.20
8.29
7.81
7.85
7.80

7.38
7.63
7.36
7.90
7.93

7.57
7.47
7.81
7.44
7.22

7.87
7.13
6.97
7.42
8.02

7.36
8.05
7.73
7.85
7.65


1.84
1.90
1.88
1.86
1.92

1.89
1.85
1.69
1.90
1.77

1.79
1.76
1.86
1.93
1.92

1.80
1.81
1.88
1.94
1.89

1.81
1.84
1.65
1.89
1.88

1.82
1.92
1.79
1.86
1.80


3.7
4.2
4.0
4.5
4.8

4.5
4.2
4.5
4.8
3.3

3.7
4.5
4.8
4.7
4.3

4.8
4.7
4.3
3.8
4.8

4.5
5.0
5.0
4.0
4.7

4.7
4.5
4.3
3.8
4.8


bicolor
yellow
yellow
bicolor, flags, Ig. kernels
yellow

yellow
yellow
yellow
yellow, good
bicolor, uneven maturity_


4.2
4.3
4.8
4.3
4.0

4.8
3.7
4.5
4.7
4.3

4.7
5.0
4.7
4.3
4.8

4.3
4.7
4.2
3.3
4.5

4.8
4.7
4.8
4.3
4.3

5.0
4.2
4.7
3.7
4.8


yellow, sides
yellow
yellow
yellow
yellow, sides


yellow
bicolor, blunt tips
yellow
Ig kernels, yellow, sides
yellow, flags

yellow, sides
yellow
yellow
yellow, large kernels
bicolor


yellow, sides
bicolor
yellow
bicolor
yellow


ah


a


Table 1.






Table Cont'a..
i* Cont .


Dazzle
Floridta sw
Butterf Stayswesew-tt
Butterfruit Bimc:6_Loc
GSS 3612
Il1ini Gold

XPH 3009
BSS 3880
XPH 2680
7812 BC
7410y

AMX 34038
Honey Pear-
EREC BC52
Sunex 2643
How Sweet It 3 -
BSS 3636


Crates/ Market- Avg.... Husk
End- Days to acre able length diam. Tip Husk
Endo- SIyo I a --(in--- fill cver Notescomments
s erm harvest r42-# 1 % ~


r


70
72
69
69
73

71
71
71
71
69


sh2
sh2
sh2
sh2
sh2

sh2
sh2
se
sh2
sh2

sh2

sh2


AS
EV
PS
RB
PS

AS
RB
AS
AC
AC


AM
PS
EV
SU
PS


71
72
75
69
71

69
69
69
75
76


69
69
71
69
71


302 b-d
300 b-d
299 b-d
291 b-d
290 b-d

281 cd
274 cd
273 cd
271 cd
271 cd

265 cd
262 cd
243 cd
201 de
47 ef
e .%


7.84
7.44
7.93
7.02
7.94

8.31
7.77
7.59
7.73
7.02

7.94
8.19
7.73
7.74
7.87


71
69
71
69
70
n


1.80
1.69
2.00
1.85
1.80


.1.71
1.79
1.75
1.73
1.81


1.68
1.90
1.65
1.65
1.72
*-


4.2
4.5
2.7
4.5
3.8

4.7
4.8
3.3
3.5
5.0

4.5
3.2
5.0
4.7
3.8
*


4.3
4.8
4.0
3.8
4.7

5.0
4.5
4.2
3.7
4.5

4.2
4.3
4.2
5.0
3.8
. -


Z ear Separatt-.io-n by Tukey's Studentized Range Test, 0.05 level.


^_________________


yellow, nice
bicolor
yellow, 1g. kernels
yellow, flags

yellow
bicolor
yellow
bicolor
yellow

yellow
bicolor
bicolor
yellow
bicolor
did not develop


Rb r







Table 2.


Endo-
Cultivar sperm


Snurce


Days to
harvest


Crates/
acrez
(429f#


Market-
able
(%)l


Avg. ear
length diam.
---C(in ---


Tip
fill 1


Husk
cnvPr


Notes /comments


WH 3132
XPH 3017
Snow Belle
EREC XPW23
Alpine

WH 3125
XPH 2654
XPH 3030
EREC XPW6-2
8701 W

EREC XPW4
WSS 4341
Even Sweeter


se
se
se
sh2
se

se
se
sh2
sh2
sh2

sh2
sh2
sh2


RB
AS
AS
EV
RB

RB
AS
AS
EV
AC

EV
RB
AS


396 a
349 ab
345 ab
341 ab
330 ab

319 ab
318 ab
278 ab
274 ab
242 ab

224 b
215 b
203 b


8.00
7.38
7.38
7.59
7.55

7.60
6.62
7.60
7.54
7.68

7.96
7.08
7.62


zMean separation by Tukey's


Studentized Range Test, 0.05 level.


1.93
1.71
1.73
1.76
1.76

1.76
1.76
1.90
1.75
1.77

1.77
1.73
1.69


4.5
3.8
3.8
4.7
3.2

4.3
4.5
4.7
4.7
4.7

5.0
4.7
3.7


3.7
5.0
4.8
4.3
4.3

4.5
4.0
3.5
5.0
4.3

4.8
5.0
3.5


flags


flags


_ _


Source harvest ( 24) --- (in) f ill rover Notes /comments


1990 (muck).


White sweet corn cultivar evaluation Lust Farms, Zellwood, FL,








White sweet corn cultivar evaluation, Zellwood, FL, 1990 (Sand).


Days to


Crates/
acrez


?larlct- av. ear


MarKet-
able


Avg. ear
length diam.
/ \


Tip Husk
C1* 1 nnIlTSr


tivar sperm Source harvest C4Z#) I) ---Iin I--- -W vr- -L


Wntpc /rnmmsnts


WH 3132
XPH 3017
Snow Belle
XPH 3030
Alpine

EREC XPW4
8701 W
XPH 2654
EREC XPW23
Even Sweeter

EREC XPW6-2
WSS 4341
WH 3125


se
se
se
sh2
se

sh2
sh2
se
sh2
sh2

sh2
sh2
se


RB
AS
AS
AS
RB


EV
AC
AS
EV
AS

EV
RB
RB


75
71
71
75
77

71
76
71


357 a
327 a
315 ab
266 a-c
262 a-c

247 a-c
240 a-c
212 a-c
210 a-c
202 a-c

182 a-c
142 bc
101 c


7.54
7.12
7.42
7.32
7.62

7.88
7.30
6.28
7.43
8.05

7.41
8.05
7.64


1.89
1.67
1.73
1.80
1.69

1.76
1.75
1.65
1.79
1.85

1.63
1.67
1.69


4.0
3.8
3.7
4.8
4.0

4.8
4.5
3.7
5.0
3.8

4.5
4.8
4.2


3.3
4.8
4.7
4.3
4.5

4.3
4.0
5.0
4.2
2.3

2.7
3.8
5.0


green tips/sides

green tips


ZMean separation by Tukey's Studentized Range Test, 0.05


Cul


Endo-


level.


--


__


Table 3.









Table 4. Temperature and rainfall at CFREC-Sanford (30
miles east of Lake Jem) during the spring 1990 sweet
corn season (March 15, 1990 June 1, 1990).

Daily temperature ("F) Rainfall
Date maximum minimum (in)

March 15-31 87 47 0.68

April 1-30 93 44 2.93

May 1-31 95 54 1.03

June 1 88 69 0.00
Total 4.64




University of Florida Home Page
© 2004 - 2010 University of Florida George A. Smathers Libraries.
All rights reserved.

Acceptable Use, Copyright, and Disclaimer Statement
Last updated October 10, 2010 - - mvs