Title: Horticultural trials with sweet corn hybrids.
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 Material Information
Title: Horticultural trials with sweet corn hybrids.
Physical Description: Serial
Language: English
Creator: Guzman, V. L.
Publisher: Everglades Research Station, University of Florida
Place of Publication: Belle Glade, Fla.
Publication Date: 1964
 Record Information
Bibliographic ID: UF00076912
Volume ID: VID00007
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.

Full Text


Everglades Station Mimeo Report EES656

HORTICULTURAL TRIALS WITH SWEET CORN HYBRIDS Ju
L. Gua OCT 13 1964

Two types of tests were conducted. In the obse ltri
screening stage those varieties which offer no possible R
fresh market were eliminated. In the replicated trials, th _~ pro-
mising hybrids of the past season's observational trials were compared
in special designs and a reliable measure of their possibilities was
obtained and statistically treated.

Character of the weather during the trials
On February 21 and 24, when the corn was a few inches above ground,
a heavy frost occurred which caused light burning of the leaves but no
other visible damage. The remainder of the month was characterized by
moderately strong winds with temperatures below normal. March temper-
atures were normal and conducive to rapid growth, but heavy early morning
fogs and relatively high winds and temperatures were proper for a good
start of leaf blight. April temperatures were for the most part normal.
Precipitation for the growing season was erratic and low, but growth was
not limited by lack of water.

Location, planting and harvest dates
Horticulture experiments 490 and 499, spring yellow sweet corn repli-
cated and observational trials respectively, were seeded February 13,1964,
at Duda and Sons farms, field SR16, and harvested April 27 to May 7, 1964,
depending on maturity of the hybrids.

Field plot technique
Single rows 40 feet long and 34 inches apart with 30 feet harvest
row constituted the plot. Two to three seeds were dropped in hills 8 to
9 inches apart. When plants reached 6-8 inches in height, thinning to
one plant per hill was done by cutting out the extra plants at ground
level. Yields were secured from the middle 30 feet of each row. In the
replicated trials a one row plot was employed in a complete randomized
block design with six replications. Single degree of freedom analysis
served to compare performance of the hybrids.

Fertility conditions
Soil analysis of the muck soil for experiments 498 and 499 gave a
mean pH of 6.4, 27 pounds of phosphorus and 240 of potassium. Since the
soil analysis indicated ample amount of nutrients, additional fertili-
zation was omitted. The experimental field was cropped to celery in the
first part of the growing season.

Weed, disease and insect control
Four pounds of Vegadex applied as pre-emergence, two mechanical
cultivations and one hand weeding were necessary to keep the plots clean.
The grower co-operator applied recommended pesticides and obtained good
control of diseases and insects.

Associate Horticulturist, Everglades Experiment Station, Belle Glade,
Florida.






Data obtained

Yield Data


I -
II -
III -

IV -
V -
VI -


Total weight of fresh en..
Weight in pounds of Uo.S Fancy and U.S. No. 1 ears.
Number of U.S. Fancy and No. 1 ears, and estimated crates
per acre.
Weight in pounds of U.S. No. 2 ears.
Number of U.S. No. 2 c~rs.
Percent U.S. Fancy ears.


Growth characteristics
VII- Flag length
VIII- Days to reach maturity.
IX- Husk color.
X Husk over tip.
XI Ear length.
XII Ear diameter.
XIII Unfilled ear tip.
XIV Number of rows.

Other observations

XV Number of plants harvested
ears per plant.
XVI Taste (raw ear).
XVII Appearance of husked ear.

Key for Hybrid Sweet Corn Tables


and estimated number of marketable


Source of seed: Name of company or individual supplying the seed; ASG -
Asgrow Seed, Milford, Conn.; Cor. Corneli Seed Co., St. Louis 2, Mo;
F.M.- Ferry Morse Seed Co., Salinas, California; J. H. Joseph Harris
Seed Co., Rochester, N. Y.; Rob Robson Seed Farms, Hall, N. Y.; Rog -
Rogers Bros. Seed Co., Caldwell, Idaho; SRS = Seed Research Specialists -
Gilroy, California; Hol = Holmes Seed Co., Canton,Ohio; A.C.- Abbott and
Cobb, Philadelphia, Pa.

Days to maturity: Number of days from planting to harvest estimated by
examining 10 ears and determining the day when the majority will reach
optimum market maturity.

Husk over ear: Approximate length of the husk over the tip of the ear.
A 1- indicates that the husk is shorter than one inch. 1+ indicates
the husk is longer than one inch.


Flag length: Estimated as mean flag length of 10 ears.
6". M = between 3" and 6". S = shorter than 3".


L longer than


Husk color: Based on intensity of green color. D = dark green; M-D
medium dark green; M = medium green; L-M = light to medium green; L =
light green.

Ear length (inches): Mean ear length of 10 randomly selected marketable
husked ears per variety and replication.






-3-


Ear diameter (cm): Mean ear diameter of 10 husked ears, measured about
2.5 inches from the butt ear per variety and replication.

Unfilled ear tip (inches): Mean length of unfilled tip of 10 randomly
selected marketable ears per plot.

Number of rows (majority): Number of rows of 10 randomly selected ears
reported as a majority number.

Number of plants harvested: Number of plants producing ears in a 30 foot
row.
Mark e n r of es p: Total number of U.S. Fancy and #1 ears
Marketable number of ears per plant: umber of plants harvested

Blight index: Helminthosporium turcicum leaf blight rating on unsprayed
plants. Zero no blight; 5 severe blight (E.A. Wolf and V. L. Guazan).

Percentage U.S. Fancy ears: Number of U.S. Fancies in a 10 ear sample
taken at random from the marketable ear class per variety and replication,
reported as percent.

Tons per acre: Estimated from the total weight of U.S. Fancy and No. 1
ears.

Taste: One person's opinion on eatability of the ears judged from the
taste of raw fresh kernels. P = poor; F = fair and G = good.

Appearance: One person's opinion on husked appearance of the ears. P =
poor; F = fair and G = good. The plus (+) indicates slightly superior
rating. The minus sign (-) indicates slightly inferior rating.



Results

Table 1 and 2 give results for the replicated and observational trials
respectively.

Two of the hybrids, Honey Gold and Northern Belle, were early and
their productivity similar. Both were fairly good in appearance and
the taste of Northern Belle was slightly superior to Honey Gold. How-
ever, due to poor pollination this year, the percentage of Fancy ears for
Northern Belle was low. These two varieties should be used mostly for
emergency replanting to obtain early harvest. The mid-season varieties
were harvested a few days later, and their performance was good for some.
The check varieties were 104 and 106. Hybrids 106A, E3570, and F 51/63,
had the best appearance of husked ears. The blight index of E3570 was
better than 104 but higher than 106. F 51/63 and 106A were slightly
more susceptible to blight than 106. Yields of these hybrids were similar
to the check varieties. Floribelle and 33.73 from SRS also produced simi-
lar yields with ears of fairly good appearance but not significantly better
than the checks. Ears of 33.73 were longer than those of the checks, but
their appearance was inferior to 106 although the percentage of fancy ears
was not. Winter Green and Southern Belle produced ears with fairly good







-4-


appearance. Yields of the former were low but the latter produced the
highest yields in the replicated trials. The percentage of Fancy ears
for Southern Belle was lower than 106, due chiefly to the relatively
longer unfilled tips. This variety had a slightly tapered ear, resembl-
ing to some extent Golden Security. Floribelle, Southern Belle, Winter
Green and 106A are suggested for small trial plantings. The first three
hybrids were more resistant to blight than 106A.

The following hybrids from the observational trials are considered
for next season's replicated trials: 30-Golden Hybrids 191-1, 51-1209x
758-1161 x 1921/63, 54-F 71/63, 55-1161 x 1440/63, 56/1131, 1921/63,
5911470 x 1921/63, 66-Gold Cup C 118G and 72-XP 205.










Table 1. Yellow Sweet Corn Replicated Variety Trials Conducted on the
Harvested April 27-May 7, 1964 (Experiment 498).


Farm of A. DLtda and Sons, Belle Glade.


------- -_ --- -

4-' 9 O *
do 43 o o !

S o a *
: 3 C
w 0j a CH 's a s ) r4



10 CRO 82 1 D 7.6 4.35 .3 1 3 129 35 273 40 270 343 80 2

2. 106~ : FM 82 1 LD 7.8 4.28 .1 14-16 32 i.i 2.0 26.4 39 25.3 323 95 6.49 F
3. 10A FM 821 MD 77 4.18 .1 14 34 1.18 3.0 25.6 39 24.4 337 90 6.24 F C



4. R-23132 Rog 82 1 S M 8.3 4.30 .3 16 38 1.11 5.0 28.8 42 28.1 360 85 7.18 F+ F
5. Floribele SRS 86 ++ S D 7.1 4.39 .1 16 37 1.19 2.0 30.4 44 28.0 373 90 717 F F

6. Honey Gold Hol 76 + M D 7.2 4.03 .i 12 37 -95 3.5 19.6 35 18.7 298 85 4.78 F F
7. routes Bele J 82 M 8.0 4.35 14 41 123 20 325 31.7 424 80 8.11 F+ F




8. Northem Belle JH 75 + sD 7.0 4.07 14 : 30 1.17 4.0 20.2 35 19.1 303 30 4.88 F+ F
9. 33.73 R 82 1 M D 8.5 4.3528 12 40 32 1.07 3. 3027.3 42 2970 363 0 7.692 F F+




10. Winter Green ASG 79 1 M D 7.8 4.08 .2 14 16 34. .95 1.5 23.5 32 22.2 278 90 5.67 F+ F+
2. E 3107 FM 8 1 L D 8.8 4.40 .2 1 6 28 1.12 3.5 26.7 32 25.3 271 95 6.49 F F
3.1 E3103 FM 80 1+ M D 7.9 4.22 .3 14 38 1.18 4.0 30.2 39 28.9 344 80 7.40 F G
13. E 3570132 FM 8 1 S M 8.4 4.18 .2 16 32 1.128 25 28.8 40 27.8 342 95 7.18 F+ F
14. Fl bele/63 8 1- S D 6.91 4.20 .1 1 3 1.1924 3.5 30. 42 28.0 37362 90 6.44 F F
6. Honey Gold Hol 76 1+ M D 7.2 4.03 .1 121 !37 .95 3.5 19.6 35 18.7 298 85 4.78 F F
7. Southern Belle JH 82 1+ S M 8.0 4.35 .4 14 41 1.23 2.0 32.5 50 31.7 424 80 8.11 F+ F
8. Northern Belle JH 75 1+ S D 7.0 4.07 .1 14 30 1.17 4.0 20.2 35 19.1 303 30 4.88 F+ F
9. 33.73 SRS 78 1- M D 8.5 4.28 .2 12 40 1.07 3.0 30.3 42 29.7 363 90 7.60 F F
10. Winter Green ASG 79 1 M D 7.8 4.08 .2 14-16 341 .95 1.5 23.5 32 22.2 278 90 5.67 F+ F+
11. R 3107 FM 83 1 S D 8.8 4.4o0 .2 16 28 1.12 3.5 25.7 32 25.3 271 95 6.49 F F
12. E 3103 FM 80 1+ L D 7.9 4.22 .3 14 38 1.06 4.0 30.2 40 28.9 344 80 7.40 F F
13. E 3570 FM 85 1+ M D 8.4 4.18 .2 14 32 1.28 2.5 28.8 40 27.8 342 95 7.11 F+ G
14. F 53/63 FM 82 1- S D 6.9 4.20 .1 14 34 1.24 3.5 30.6 42 25.2 362 90 6.44- F G
LSD 0.05 0.22 0.11 V 3.7 0.18 3.- 5.5 2.82 7.1 13.
0.01 0.30 0.15 aII 4.9 0.24 4.3' 7.3 3.76 62.7 186






hble '2. Observational Trials of Yellow Hybrid Sweet Corn Conducted At A. Duda & Sons Farm, Belle Glade.
Spiing 1964. Harvested April 27 to May 7, 1964. (Exp. No. 499).
rd

o 4



0 00
----i?-II 1O II

0 s I I d U
Variety S I

15 Queen Anne NK 76 4.5 21.0 38 19.5 1 40 0.95 325 -- M 1 D 4.15 7.4 .2 12 F+ F
16 Golden Valley NK 83 4.0 27.0 41 26.0 1 35 1.17 350 90 M 1+ DG 4.50 7.5 .1 16, F F++
17 NK 1304 NK 83 5.0 26.0 36 24.5 1 36 1.00 307 90 M 1+ D 4.30 7.8 .1 12 F+ F+
18 4818 NK 81 3.5 22.0 39 22.0 0 30 1.30 333 80 S 1+ D 4.40 8.5 .3 12 F F
19 4825 NK 82 3.5 27.3 40 27.3 0 34 1.18 342 70 L 1+ D 4.40. 7.8 .4 14. F- F
20 4828 IK 81 3.5 25.5 37 24.8 0 39 0.95 316 80 M 1+ D 4.15 8.0 .4 14. F F
21 4833 (white) NK 84 4.0 26.0 29 21.0 1 24 1.21 248 0 L 1+ D 4.60 8.5 1.5 F P
22 4834 NK 86 5.0 22.0 40 20.5 1 41 0.98 342 80 M 1- M 4.05 7.8 .4 12 F++ F
23 4840 (white) NK 81 5.0 27.8 42 27.0 o 40 1.05 359 70 M 1+ D 4.60 8.0 1.5 16 F F-
24 4976 (white) NK 85 5.0 28.8 36 24.5 0 38 0.95 307 0 M 1++ D 4.70 7.8 1.5 F
25 D p. Eclispe HOL 82 4.5 22.5 31 21.3 1 32 0.97 265 90 L 1++ DG 4.30 7.5 .2 16 F* F+
26 NK 87 HOL 82 4.5 29.5 40 28.0o 0 38 1.05 342 70 s 1+ M 4.60 8.0 .6 18 F. F-
27 Golden Hybrid 191-2 A&C 81 5.0 32.0 40 32.0 0 41 0.98 342 70 S 1- M 4.80 8.5 1.0 1i F+ F-
28 White Hybrid #181 A&C 85 3.0 20.3 20 13.8 0 25 0.80 171 10 M 1++ D 4.30 8.0 1.5 14 F+ P
29 Golden Hybrid#182 A&C 82 2.5 32.8 50 31.3 0 41 1.22 427 80 S .1+ D 4.90 7.5 .1 18 F- F-
30 Golden Hybrid 191-1 A&C 82 3.5' 37.0 57 34.0 3 39 1.46 487 90 M 1+ DG 4.35 7.-5 .2 16 F* F+
31 R-03062 ROG 85 5.0. 19.8, 19 10.5 2 35 0.54 162 80 S-M 1+ D, 45 8..0 1.P 12 F+ F-
32 R-42474 ROG 83 2.5 36.0 52 34.3 2 32 1.63 444 80 L 1+ DG 4.55 7.8 .3 14 F- F+
33 R-32644 ROG 5.0 25.0 41 21.5 2 41 1.00 350 70 L 1+ DG 3.95 7.8 1.0 12 F* F-
34 R-22416 ROG 83 5.0 33.8 45 30.8 1 27 1.67 384 70 L 1++ D 4.40 7.8 0.4 14 F- --
35 R-32083 ROG 82 5.0 20.0 35 16.5 2 35 1.00 299 70 L 1- MG 3.90 8.5 1.2 14 F+ P
36 R-21931 ROG 81 5.0 35.0 50 30.0 4 45 1.11 427 60 s 1+ D 4.50 6.8 1.0 -- F P
37 Seneca iampum 61 ROB 82 3.5 30.0 44 28.5 0 34 1.29 376 70 L 1+ D 4.15 7.8 .5 12 F F-
i i^ ^ ^ ___ __ ___






Exp. No. 499. (Cont.) Table 2.



o 0 u 0


3 S 3 70 m 0 i. 0 1 1
-s~ra




0 w 4 O 4 f O 3 0
o r a +> aa m l

Variety '
_____ g S
_ _ _s

38 Seneca MK-18 ROB 82 4.0 42.5 62 38.8 b 40 1.55 529 70 L 1+ D 3.90 8.0 1.0 16 F+ F
39 Seneca MK-110 ROB 82 4.0 27.8 37 25.8 2 35 1.06 316 80 M 1- D 4.40 7.8 .3 -- F F
40 Seneca MK-100 ROB 83 5.0 26.0 39 25.3 0 41 0.95 333 70 M 1+ MG 4.35 8.0 1.0 14 F+ P
41 Seneca MK-120 ROB 82 3.5 33.5 42 31.0 2 40 1.05 359 40 L 1++ D 4.40 7.8 1.2 14 F P
42 E305 SRS 82 4.5 37.8 41 36.00 039 1.05 350 80 S 1++ MG 4.90 8.8 .6 20 F P
43 E3C7 SRS 82 4.0 27.3 36 25.0 1 30 1.20 307 80 s 1+ M 4.40 8.3 .2 14 F+ F
44 E4C1 SRS 79 3.5 23.0 20 21.0 1 35 0.57 171 80 S 1+ MG 4.25 7.5 .3 14 F F
45 E5C3 SRS 82 4.0 37.3 51 34.0 1 41 1.24 436 80 M 1+ D 4.20 7.8 .3 14 F+ F+
46 E5C4 SRS 82 3.5 33.0 57 29.8 2 36 1.58 487 70 M 1+ DG 4.30 7.0 .5 12 F. F-
47 E602 SRS 78 3.5 21.0 33 20 2 33 1.00 282 70 S 1+ MG 4.35 6.8 .2 14 F F-
48 SRS 33-73 SRS 82 3.0 34.5 48 33.3 0 46 1.04 410 90 L 1+ DG 4.15 8.3 .2 14 F F+
49 KVF 52-2C1 COR 83 4.0 36.5 50 31.0 3 35 1.43 427 30 L 1+ M 4.60 7.5 1.5 16 F+ F-
50 145x758/63 FM 83 3.5 37.3 54 30.3 1 30 1.80 461 70 s 1+ MG 4.50 7.8 1.0 16 F* F-
51 1209x758/63 FM 83 2.5 32.3 36 28.8 0 34 1.06 307 80 L 1+ DG 4.40 9.0 .3 14 F' F+
52 1161x192/63 FM 83 2.5 31.0 46 30.0 0 42 1.10 393 L00 M 1+ DG 4.25 7.8 .1 12 F G
53 F42/63 Hybrid -
E3006 FM 83 2.5 41.0 53 36.5 1 44 1.20 453 90 L 1+ DG 4.20 8.8 .1 16 F+ F+
54 F71/63 FM 77 3.0 8.0 9 7.0 1 7 1.29 077 90 M 1+ DG 4.20 8.5 -3 16 F++ F+
55 1161x1440/63 FM 83 2.5 26.8 37 23.0 3 37 1.00 316 90 M 1- D 4.10 8.0 .1 14 F F+
56 1131x1921/63 FM 82 3.0 133.5 43 31.0 3 40 1.08 367 L00 M 1 DG 4.30 8.0 0.0 14 F G
57 F 43/63 FM 83 3.5 30.0 40 27.8 0 33 1.21 342 90 M 1+ DG 4.30 8.3 .4 16 F+ F+
58 1473x1574/63 FM 82 3.5 32.0 43 27.3 0 36 1.19 367 80 M 1+ MG 4.45 8.0 .4 16 F- F
,------- -- t- --- -- -- --








Exp. No. 499. (Cont.) Table 2.
i~ 1 I. L L


59 1470x1921/63
60 F44/63
61 F31/63
62 XP 290
63 XP 291
64 XP 295
65 XP 297
66 Gold Cup C
118C Harris
67 Gold Cup 978
68 Gold Eagle L
69 Northern Belle 7L
70 131 Northern Belle
71 Silver Queen
72 XP 205
73 KVF60-1334 Hybrid
74 Corneli 109

69
Rep C
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FM
FM
ASG
ASG
ASG
ASG

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JH
JH
JH
JH
ROG
HSG
CBR
COR


83
83
83
84
84
85
85

82
81
82
82
86
78
82
79
80


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3.5
2.0
3.5
4.0
4.0
3.0
2.5

3.0
2.5
4.0
3.5
4.0
4.0
3.0
1.0
1.0


33.3
36.5
39.8
27.5
30.0
34.5


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29.5
35.3
36.0
27.0
27.8
32.8


Poor Germinatio:


38.3
30.0
41.8
28.0
32.0
36.4
31.
34. 7j
20. 3'

41. C

33.3


30.5
29.0
40.0
24.8
30.3
36.0
24.5
16.5
15.5

36.5

29.8


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100
80
60
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4.15
4.10
4.30
4.50
4.50
4.40


4.40
4.00
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4.20
4.25
4.75
4.00
4.20
4.15

4.35

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7.5
8.8
7.3
7.8
7.0
7.5


8.3
7.8
7.5
7.0
7.0
7.8
8.2
7.8
8.2

7.8

7.8


1.73
1.93
1.70
0.95
1.08
1.53


1.53
1.51
1.54
1.17
1.39
1.00
1.05
1.43
0.79

1.46

1.24


384
444
478
333
333
470


470
453
512
350
393
303
350
239
222

512

401


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F F+
F+ F++
F+ F+
F F
F F-
F+ F+

F+ F+
F+ F+
F P
F+ F
F F-
G F++
F+ G
F- F
-- F-

F P

F+


- -- --




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