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Title: Horticultural trials with sweet corn hybrids, spring ...
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Permanent Link: http://ufdc.ufl.edu/UF00076909/00002
 Material Information
Title: Horticultural trials with sweet corn hybrids, spring ...
Series Title: Horticultural trials with sweet corn hybrids, spring ...
Physical Description: Serial
Creator: Wolf, Emil A.
Publisher: Everglades Experiment Station
Place of Publication: Belle Glade, Fla.
Publication Date: 1955
 Record Information
Bibliographic ID: UF00076909
Volume ID: VID00002
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 166141088

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V"


Performance of 154 named and experimental sweet corn hy-
brids in six observational trials receiving routine fungi-
cide applications for control of leaf blight during the
spring of 1955 is summarized and presented in tabular form.
Susceptibility to leaf blight caused by Helminthosporium
turcicum Pass. is indicated by disease indicies received
in a planting which received no fungicide applications,




EVERGLADES STATION MIMEO REPORT 56-5

Belle Glade, Florida


September 15, 1955


/06

















HORTICULTURAL TRIALS 1II01 SWEET CORN HYBRIDS, SPRING 1955

By

Emil A. Wolf


I


.-*<->{.


fl









HORTICULTURAL TRIALS WITH SWEET CORN HYBRIDS, SPRING 1955


Emil A. Wolf


With lower prices which have generally prevailed in recent seasons as a
result of competition and establishment of sweet corn as a regular commodity on the
fresh market during the winter and spring months, sweet corn growers are becoming
increasingly conscious of production costs and consumer preferences. They are look-
ing for hybrids with higher yielding capacity which can be grown at lower cost per
crate and those with disease and insect resistance which may be grown with less
spraying expense. They are also interested in hybrids which produce more attractive,
higher quality ears which will increase sales at the consumer level. To help growers
obtain better hybrids, the Everglades Station has, for the past several years, con-
ducted an extensive sweet corn testing program, comparing the hybrids now being grown
with the new hybrids being offered to growers by seedsmen and with many experimental
hybrids not yet available to them from seedsmen, other experimental stations and .
U.S.D.A. agencies. The performance of 154 hybrids grown in 6 trials conducted in
commercial fields which were protected by fungicide applications is summarized in
this report. Very little leaf blight occurred on even the most susceptible hybrids
in these commercial fields. Therefore, to give an indication of relative suscepti-
bility of the various hybrids to the leaf blight caused by Helminthosporium turcicum
Pass. disease indicies from an unsprayed planting are presented in the tables.


Results from the trials:
Carmelcross and Golden Security--included as checks--were, as in previous
trials, outstanding for their high productivity. loana, the other check variety,
though not as productive as either of the first two checks produced a good yield of
very attractive ears which were well filled to the tips. A number of small secondary
ears inside the husk of Golden Security ears were noted for the first time. The
number of ears affected was much greater in earlier than later plantings but the
characteristic was present in this hybrid in all plantings. Approximately 15 percent
of the ears were affected in the trials planted January 28 and 5 percent in those
planted on March 7. Affected ears were discarded for the most part by growers and
considerable production was lost, however, marketable yields of Golden Security were
still very good. As indicated by the results of the trials reported herein, few hy-
brids which are now commercially available appeared to yield as well. Any growers
who have grown Golden Security in the past and are considering changing to another
hybrid because of the presence of the secondary ears should give considerable thought
before making a change. No secondary ears were noted in the ears of loana and Carmel-
cross which with Golden Security constituted the bulk of the sweet corn acreage in
the area. Growers planning to try new hybrids which have not yet been thoroughly
tested in the area should certainly limit their tests to a small acreage.

Tempo, a Golden Security type, under trial for the second year, appeared
to yield about the same as Golden Security and did not have the secondary ears in-
side the husk, however, ears of this hybrid showed a tendency toward more tip blank-
ing than those of Golden Security. It is recommended for trial, Seneca Supermarket
produced attractive, well filled loana type ears but did not yield as well as Golden
Security even at close (6") spacing in the row, Table 7. This hybrid has done well,
however, in late fall and early winter trials where difficulties are encountered in
getting satisfactory tip fill with Golden Security. Supermarket is recommended for
trial plantings during late fall and early winter. Two other named hybrids, Topyield


/ Assistant Horticulturist, Everglades Experiment Station, Belle Glade, Florida.









S-2-


and Melocross, which were considered to be among the more promising hybrids having
some resistance to leaf blight in the 195h trials, did not yield as well as Golden
Security., Melocross ears, when husked, showed variation and were not considered to
be equal in appearance to those of Golden Security. The husk did not cover ends of
several ears of both hybrids. Some secondary ears also were observed inside the husk
of Topyield.

Of the experimental hybrids having resistance to leaf blight caused by
Helminthosporium turcicum and showing most promise in the 1954 trials, three con-
tinued to show promise and were considered worthy of increase for commercial trial.
These were Crookham Company hybrids 68-6, 68-13, and 68-14. Experimental hybrid
2132 x 2256 from Dr. E. S. Haber, Iowa Agricultural Experiment Station, considered
to be one of the more promising experimental hybrids in 1953, was again selecte-d as
one of the more promising. It received a 2.5 index for leaf blight, produced eight
inch 16 rowed ears, 4- dozen size, which filled extremely well to the tip. The plants
also had fewer suckers than Golden Security indicating that it might be grown suZ:ess-
fully at a closer spacing. This hybrid may be deficient in husk coverage but the ul-
husked ears are very attractive. Of the experimental hybrids in trial for the first
year, five from Rogers Brothers their numbers R 1, 3, 7, 8 and 11 were outet::u-d-
ing. All of these displayed some degree of resistance to leaf blight with the R 1
being highly resistant.


How the trials were organized and carried out.
Organization of the trials reported herein in which the plants were pro-
tected by fungicide applications was as follows: The best hybrids from the 1954
trials of which seed was available were placed in Trial 1. Though the field was
highly fertile and very uniform, each hybrid was planted in triplicate in this test
in order that the yield data might be submitted to statistical analysis. However,
due to severe damage to some plots by earworm dusting and spraying equipment, several
plots were lost and yields in Table 1 which summarize results of this trial are
averages from two plots which had good stands and were undamaged. Depending upon
available seed, additional plots ranging from 0.2 to 0,8 acres in area were planted
of some of the hybrids and again on March 7 to obtain information on performance and
acceptance of these hybrids on a limited commercial basis. Data from these commer-
cial trials are given in Table 6. New hybrids were placed in Trials 2 and 3. Single
plots only were planted in these two trials and observations made on each hybrid ere
presented in Tables 2, 3 and U. All four trials were planted on January 28 and 29.
A second planting was made on Harch 9 of some of the hybrids plus entries received
after January 29 in trial 4 which is summarized in Table 5. Plots in Trials 1, 2,
and 4 were single rows 50 feet long with plants spaced approximately 12 inches aoart
in the row. Rows were 36 inches apart with 42 inch spray middles. Yield records
were taken from the first 40 feet. Trial 3 consisted of single 20 foot rows of each
hybrid.

In previous trials Seneca Supermarket had produced very attractive ears
which filled very well to the tips. Since it is a single eared hybrid, and experi-
ment was established to determine whether by close spacing in the row yields from
it could be made to equal those from Golden Security which contains a multiple
hearing factor. Large plots (0.8 acres) were used in this test. Plots of Seneca
Supermarket at 6 and 9 inch spacing in the row were each placed between plots cf
Golden Security which had been thinned to 9 and 12 inches apart in the row. Yields
obtained from this trial are given in Table 7.











-3-


Soil on which these tests were conducted was a very uniform, highly fertile,
well matured Everglades peat soil which had previously grown several crops of celery
and other vegetables. Routine fertilization and spraying was carried out by the
grower,*


* Acknowledgment. These trials were carried out on the A. Duda and Sons farm at
Belle Glade. Without their excellent cooperation, these trials could not have been
as extensive nor as much information obtained,









Plant Characters Ear Characters Yield Rating
4' (2) E-) *-I
4 4 4D 2 a &I
Hybrid o r T ri cU a) *) (D
o o o
a O 0 lL COz MPi V-l3 PW C/3 rH ca H Am -H C4
_(_) (2) (3) (4) (5) (6) (7) ,(8) (9) (10) (31)
Carmelcross Frw 83 4 4 4.5 1.0 4.8 3.0 2.5 3 2 2 12 7.9 1.0 1.7 50 0 0 2
Golden Beauty FMI 83 4 3 3.8 1.0 4.0 2.0 2.5 3 3 2 12 6.0 0.4 1.6 28 2 4 4
526 NK 87 4 4 5.0 1.5 4.5 2.0 4.0 3 2 2 12 8.4 1.4 1.6 41 0 0 4
loana FIM 94 4 4 6.8 2.5 5.3 3.0 4.5 3 3 3 12 7.8 0.0 1.6 35 4 0 2
Seneca Supermarket Rob. 94 4 4 7.0 2.0 7.0 2.0 4.5 2 3 3 12 7.9 0.3 1.6 38 2 0 1
Tempo Cor. 94 3 4 7.0 2.0 5.3 1.5 4.5 3 3 3 14 7.9 0.7 1.8 47 10 0 3
Golden Security FHf 94 3 4 7.0 2.0 6.8 2.0 4.5 3 3 3 13 7.6 0.5 1.8 47 9 0 1
65-13 (Iowa) Cro. 94 3 5 6.0 2.5 4.5 3.0 1.5 2 3 2 14 7.6 0.4 1.6 48 2 0 3
51-4 Cro. 89 5 4 6.0 3.5 5.0 3.0 1.0 3 3 2 12 7.8 1.1 1.6 45 0 1 3
68-14 Cro. 94 3 4 6.0 2.0 5.8 3.0 1.0 2 3 2 14 8.0 0.4 1.7 47 5 2 2
68-6 Cro. 94 3 4 6.3 2.0 6.5 2.0 3.0 2 3 3 14 8.3 0.5 1.7 49 2 0 1
68-11 Cro. 91 3 4 6.8 1.5 6.0 3.0 2.0 3 3 2 12 8.2 0.8 1.6 38 3 0 3
68-7 Cro. 94 4 4 6.3 2.0 6.0 2.0 2.5 2 3 3 14 7.8 0.7 1.6 56 2 0 3
68-13 Cro. 91 4 4 6.0 2.0 5.5 3.0 3.0 3 3 3 12 8.4 0.7 1.7 47 7 0 2
68-18 Cro. 90 5 4 5.5 2.0 5.0 2.0 1.0 1 2 3 12 7.5 0.5 1.6 42 2 0 3
69 Cro. 94 5 5 6.8 2.0 6.8 2.0 3.0 3 3 2 12 7.8 0.3 1.7 58 3 0 3
18539 x LTB Cro. 94 4 4 5.8 2.3 5.9 2,0 2.0 2 3 2 12 8.4 0.5 1.7 50 2 0 3
309a x 112F Ill. 94 4 4 6.5 2.0 1.5 2.0 1.5 2 2 1 16 7.1 0.7 1.8 42 6 2 3
q 101 x l12f Il. 94 4 4 7.0 3.4 6.8 2.0 1.5 3 3 1 14 7.7 0.4 1.8 53 8 2 3
1921 x u10a IIl. 91 4 6.0 2.3 3.0 2.3 20 2.0 3 2 2 12 7.9 0.4 1.8 38 1 0 3
X LTA Cro. 89 4 4 6.0 1.5 5.5 3.0 2.0 3 3 2 12 7.5 0.5 1.6 42 0 0 3
x LTB Cro. 89 4 4 5.5 1.5 5.5 3.0 1.0 3 3 2 12 7.5 1.0 1.6 44 0 0 3
* (1) Cor-Corneli Seed Co.; Cro-Crookham Co.; FUW-F. H. Woodruff and Scns Ill-Illinois AE.S.; NK-Northrup King & Co.;
Rob-Robson Seed Farms. (2) Seedling Vigor- 1-weak to 5-strong. (3 Stalk- 1-weak to 5-strong. (4) Helminthosporium
turcicum indicies from disease nursery planted Feb. 16, 1955. (Modified Ulstrup scale:1-slight infection to 5-heavy
infection). (5) Husk-relative scale: 1-loose, exposed tips, to 3-tight, 3" husk extension beyond tips. (6) relative
Scale: 1-poor to 3-best for market appearance as determined by husk length, husk color, flag leaves, and shank;
(7) Relative scale: 1-poor to 3-best appearance of husked ears; (8, 9, & 10) Average number of ears from two ran-
domized 40 foot plots except for Golden Security and the last two hybrids which are from single lots only. Fancy-ears
with cobs 6" or longer, US #1-5 to 6", and US #2, 4 to 5$ long all unfilled tips of less than I total length of cob;
(11) Relative scale: 1-best to 4-poorest based on results of this trial, grower and buyer preference


Planted January 28, 1955


Table 1. Sweet Corn Hybrid Observational No. 1.


I







Table 2. Sweet Con nyryra uDservaational irna fL r.Lanteu Jcauary -y, y _*
Plant Characters Ear Characters Yield Rating
() () 3 ( ( ( ( 3 4o
034- P (5) 6)0 *rt 08) 09
0 4- 4 -, uld a".q a) h 0s m
60 4 43 0 ) -" 43* Cl 2 H C
(0 ID .hl 4 (d 3 pf 4, : f v 6 Q C I H
l3 EO 1 W P4 4to O3 -4 (1)* (2) (3) (4) (5) (6) (7) (8) (9) (30) (I0)


___ _


Golden Security FHW 94 3 4 7.0 2.0 6.8 2.0 4.5 3 3 3 14 7.6 0.5 1.8 47 9 0 1
51-2 Cro 90 5 4 6.0 2.0 5.0 2.0 1.5 3 3 2 12 7.5 0.5 1.5 39 5 0 4
51-1 Cro 94 4 3 5.5 1.8 5.9 2.0 2.0 2 3 1 12 9.0 1.0 1.7 36 6 0 3
18539 x 101 T Cro 91 4 3 6.0 2.0 6.0 3.0 2.5 3 2 3 14 7.5 0.5 1.6 61 9 0 4
68-1 Cro 91 4 3 5.5 1.5 5.5 3.0 1.0 1 2 1 12 8.0 1.0 1.8 42 4 0 4
68-2 Cro 94 4 3 6.0 2.0 5.5 3.0 3.5 2 2 1 10 9.0 1.0 1.7 36 4 5 4
68-3 Cro 94 3 3 6.5 2.0 5.8 2.5 2.5 2 3 1 12 8.0 0.5 1.8 39 3 0 4
68-4 Cro 91 4 3 6.0 2.0 5.5 2.0 2.5 1 2 1 12 8.0 1.0 1.8 50 5 0 4
68-8 Cro 90 4 3 5.5 1.5 6.0 2.0 2.5 1 1 1 12 7.5 1.0 1.6 45 0 0 4
68-16 Cro 94 3 3 7,0 3.0 6.8 2.5 4.0 1 3 2 12 7.0 0.8 1.8 31 6 5 4
68-17 Cro 94 4 3 6.0 2.0 6.0 2.0 1.5 1 3 2 12 9.0 0*3 1.9 35 9 0 4
Ps39-5 PST x LTB Cro 91 4 4 5.8 1.5 5.8 3.5 1.5 3 3 2 12 8.5 1.0 1.7 28 6 0 3
P39-468.16LE x 51T Cro 90 4 4 6.0 1,8 6.0 4.0 4.0 1 3 2 12 8.5 0.5 1.5 47 10 0 3
P39-5 12P39x51T Cro 90 4 3 6.8 2.0 5.8 4.5 4.0 1 3 1 12 7.0 2.0 1.7 6 24 0 4
P46LE x 500A Cro 91 5 4 6.5 2.8 5.0 3.0 4,0 3 3 2 12 7.0 0.0 1.6 36 4 0 3
24806-2 Cro 91 5 4 6.5 2.0 5.5 2.0 4.5 3 2 2 12 7.5 0.3 1.6 32 4 0 3
24806-16 Cro 90 4 4 5.3 1.0 3.0 2.0 1.0 3 1 2 14 7.5 0.5 1.6 29 0 0 4
G. Hybrid #4 Ft 90 5 3 7,0 2.0 5.5 3.2 1.5 2 2 2 12 7.0 0.5 1.6 39 7 0 3
G. Hybrid #5 FHW 94 4 3 6.5 2.0 4.8 3.0 1.5 3 3 3 16 9.0 1.0 2.0 46 0 0 3
3820 FHW 91 5 5 7.0 2.5 5.8 2.5 3.0 3 2 3 16 7.5 0.5 1.9 43 9 0 2
3197 FHtw 91 5 5 6.5 2.5 6.0 3.0 1.5 3 3 1 14 9.0 1.0 1.8 44 2 0 4
G. Hybrid #6 FHW 94 4 4 5.0 1.5 $.0 3.0 3.5 1 3 3 16 7.5 0.3 1.8 43 0 0 2
G. Hybrid 3171 FHW 94 4 4 6.0 2.0 5.0 2.0 3.0 1 3 2 12 7.0 0.5 1.8 43 2 2 3
G. Hybrid 3347 FHW 91 4 3 5.8 2.0 6.0 2.0 2.0 3 3 3 16 8.0 1.5 1.7 34 3 0 3
G. Hybrid 3952 FHW 91 5 4 6.3 2.0 6.0 3.0 4.5 3 2 3 14 7.5 0.8 1.7 43 10 0 3
G, Hybrid 0144 FHW 87 4 4 4.8 1.0 4.5 2.0 3.0 3 3 3 12 8.0 0.5 1.8 29 2 0 2
Seneca C. Cross Rob 87 3 4 5.0 1.0 5.0 2.0 2.0 3 3 2 12 7.8 1.3 1.8 41 0 0 2
Ex. Fla. 53-2 Rob 94 4 3 7.0 3.0 6.5 2.0 4.5 3 3 3 16 8.0 0.3 1.8 51 0 2 2
Ex. Fla. 53-3 Rob 96 4 3 6.3 2.5 6.0 2.3 4.0 3 3 3 14 8.0 0.0 1.8 44 0 0 2
Ex. Fla. 53-4 Rob 96 4 3 6.0 2.0 5.5 2.0 4.0 3 3 3 16 7.5 0.5 1.8 33 0 0 2
Hybrid #60 FM 90 4 2 5.4 1,8 5.0 2.0 2.0 2 3 3 12 8.0 0.5 1.7 31 24 0 2
75421 FM 90 4 3 5.5 6.5 5.5 2.0 4.0 2 2 2 12 8.5 0.8 1.5 35 0 0 3


~ nr'ci







Table 2. Sweet Corn Hybrid Observational Trial #2 Planted& J9.pa -91.29, lS Contt .___).3
Plant Characters Ear Characters Yield
-3 $41 +.Y WP
-P 4-0')1 -s-I 0
bo -p P.4 ) $-
*D) .f W. o i-
0- 4- R w ;I'd CM 0 C
) $-H ( m k i! do 0 4 H r 1
V .i C) -P (D D 104C ) (D 0)0) 41 :
4 :>O 4-i 4P D4 .4-1 .-X 0 ~ CH X .rq.,~ O
a) 19 cd ( 0m
^ ta-30 -l C4 -P ^ia^ '^ '"S "" ^ SP- -- c^ S
O WO 4 P 'u
00 :C Fl db 4.1 4 ) C' P4
53 W C~o)t- U3 rZ4i 44 S a FX U3 'AD 14 1 4%) Q W4' W A SE-4 r x


(1)*


(92 (3


I --b \ %J ,-^ % I ,-


78423
78424
52875
53887
35844
37246
190a x lOlu
325a x lOlu
349a x lOlu
168a x 10lu
313a x 104c
162b x 112f
319a x 112f
335a x 112f
414a x 112f
477a x 112f
513a x 112f
474a x 112f
6038 x 2132
2132 x 2256
2132 x 2277
2132 x 5145
5145 x 6038
5369 x 5297
5370 x 5297
5371 x 5125
6521 x 5297
Barbecue
Wonderful
68-9
G. Hybrid 2849
Asgrow 60


FM 87 4
FM 87 3
- FM 87 4
FM 87 5
NK 85 5
IK 83 5
Ill. 91 3
Ill. 91 5
Ill. 90 4
InI. 94 5
Ill. 97 5
Ii. 94 5
Ill. 94 5
Ill. 94 h
IT,. 94 4
Ill. 94 5
111. 94 3
I1. 97 5
Iowa 94 2
Iowa 94 4
Iowa 90 4
Iowa 97 4
Iowa 94 4
Iowa 94 5
Iowa 90 4
Iowa 94 4
Iowa 97 4
J.H. 87 3
J.H. 88 4
Cro 90 4
FH!T 87 5
ASG 94 1


3 4.8
3 5.3
3 4.5
L 6.0
4 5.5
3 5.0
3 7.0
3 7.0
3 6.5
3 7.0
5 6.0
4 7.0
4 6.8
5 7.C
3.5 7.0
3 7.0
3 7.0
3 7.3
3 6.0
4 5.5
3 6.0
5 6.0
4.5 6.5
5 6.5
4 6.0
5 5.5
4 6.5
4 5.8
3 4.8
2 5.3
4 5.0
4 5.0


1.5
2.0
1.5
1.8
2.0
2.5
2.5
2.0
2.5
3.0
2.3
3.0
2.0
2.0
2.5
3.0
2.9
2.5
2.0
2.0
2.0
2.5
2.5
2.8
2.5
2.0
2.5
1.3
1.5
1.3
1.5
2.0


4.0
5.8
5.0
5.5
5.0
5.3
6.5
6.8
6.0
7.0
3.0
7.0
6.0
6.5
6.5
6.8
6.0
7.0
6.0
5.8
5.5
5.0
6.0
5.5
7.0
4.5
6.0
5.0
3.8
5.3
4.8
5.5


2.0 3.5
2.0 3.5
3.0 2.5
3.0 2.0
2.0 2.0
2.5 2.0
2.0 4.0
3.0 1.0
3.0 3.5
2.0 3.5
2.0 3.0
2.5 3.0
2.0 2.5
2.0 2.5
3.0 3.5
3.0 2.5
2.0 4.0
3.2 2.5
2.0 5.0
2.0 2.5
3.0 2.0
3.0 2.0
2.0 4.5
2.0 4.5
2.0 4.O
2.0 4.5
2.0 4.5
3.0 2.0
2.0 4.0
2.0 2.0
2.5 4.0
2.0 4.5


2 16
1 16
2 12
1 14
3 12
1 10
3 14
2 14
1 14
2 16
2 14
2 16
2 16
1 12
2 14
2 14
1 14
3 14
3 16
3 16
3 14
3 18
3 16
2 16
1 14
1 20
3 16
2 12
2 12
2 12
3 12
3 14


7.5
8.5
7.0
8.0
7.3
7.0
7.5
7.5
9.0
7.0
8.0
8.0
3.0
8.8
8.0
7.0
8.0
8.5
8.5
8.0
8.0
7.0
8.0
8.5
8.0
7.0
7.5
8.0
7.5
8.0
8.5
8.5


0.5
1.5
1.0
1.5
0.0
0.0
0.3
1.0
1.5
0.5
0.0
1.0
0.3
0.5
1.0
0.8
0.5
0.0
0.0
0.0
0.5
0.0
0.5
1.5
0.3
0.5
0.5
1.5
0.5
1.0
1.0
0.5


1.8
1.8
1.6
1.7
1.6
1.6
1.7
1.7
1.6
1.8
2.0
1.8
2.0
1.9
1.9
1.9
1.8
2.0
1.9
1.8
1.6
2.0
2.0
1.9
1.7
2.2
2.0
1.5
1.6
1.7
1.6
1.7


20 3
41 0
30 4
36 5
42 0
64 2
56 10
54 4
39 5
45 2
32 0
54 4
50 0
48 4
45 o
61 0
46 o
39 0
37 0
46 4
43 6
43 0
50 4
41 3
33 4
43 0
28 0
31 0
42 5
a -

a -







Table 2. Sweet Corn Hybrid Observational Trial #2. Planted January 29, 1955


Plant Characters Ear Characters Yield Rating

D r ( -r
4-1 -9 0 V.k
r 0 90 0 0)
0 4, r H 5 CO D 0
W 4-D M -t<^ 3 a0 M P3 14 14 'd CU ;1 4-'-)D t-
0 md 9 CU T0 (D Q) rP *c
M OL H4- d 4 144) 0
W CO 0 0 10, 1 V) P4 P
0 Cd 0c V, 4 1'- (D (D a :r 4 703
En Oi 4 i: 0 a) E- CZ 1-4


() __(2) (3) (4) (5) (6) (7) (8) (9) W(0) (1)
35372 Fm 88 3 4 6.0 2.0 6.0 2.0 4.0 3 3 3 12 8.5 0.5 1.6 (a) 3
35373 FM 88 3 4 6.5 2.0 6.0 2.0 4.5 3 3 2 14 8.0 1.0 1.7 (a) 3
53859 FM 90 3 3 5.0 1.3 5.5 3.8 3.0 3 3 3 12 7.5 0.8 1.7 (a) 3
454a x 112f Il. 90 5 4 7.0 2.5 5.5 2.0 2.5 3 3 3 16 8.5 0.5 1.7 (a) 2
5145 x 5297 Iowa 97 4 4 6.0 2.5 3.0 2.0 5.0 --- --- (a) 4
68-19 Cro. 94 2 3 6.0 2.0 6.0 2.0 3.0 2 2 1 --- --- (b) -
35375 Em 85 5 3 4.o 1.0 4.8 3.0 1.0 3 3 1 8 6.5 0.5 1.6 (b) -
164b x 0l4c Ill. 97 5 6.0 2.5 3.0 3.0 2.0 2 1 2 12 7.0 1.0 2.0 (b) 4
6522 x 5297 Iowa 97 4 3 7.0 2.5 7.0 2.0 4.0 3 3 1 16 7.8 1.0 2.0 (b) 4
6554 x 5295 Iowa 96 5 6.0 2.5 6.0 5.0 3.5 1 2 2 -- .- b) 4


* Column headings 1 to 7 same as Table 1 except for (1) Add ASG-Associated Seed Growers; FM-Ferry Morse Seed Co.;
Iowa-Iowa AES; J.H. Joseph N. Harris Seed Co. Columns 8, 9 and 10 are yields from single plots 40 feet long.
a Yield records could not be obtained from these hybrids because of poor stand or mechanical damage to the plots,
b Plots of these hybrids were not harvested because of major ear defects which would prevent commercial acceptance
on the fresh market.


(Cont'd).










Table 3. Sweet Corn Hybrid Observational Trial #2, Planted January 29, 1955.
Additional Entries on which Records were Not Completed Because of One
or More Major Defects.

Ear Defects

W 0,
,0 0 )9 o ) W( 0)

1- 81- O R 0o Po
(1) P 144 f 3 6 M E ___


P39-468.16LE x LTB
18539 x 500A
6038d x 500A
453 x 5o0A
1Old x 500A
P39 WLE x 50OA
24806-2
24806-4
24806-5
24806-6
24806-7
24806-8
24806-9
24806-10
24806-11
24806-12
24806-13
24806-14
24806-15
24806-17
24806-18
24806-19
No, 66 c
No. 75B
352/55
3553/54
G. Hybrid #8
3494

4272
31L9

G. Hybrid #2


Cro.
Cro.
Cro.
Cro.
Cro.
Cro.
Cro.
Cro.
Cro.
Cro.
Cro.
Cro.
Cro.
Cro.
Cro.
Cro.
Cro.
Croe
Cro.
Cro.
Cro.
Cro.
FM
FM
FT
FM
FHW

mjw
FHW
FHW
FHW
FITJ


4.0
4.5
5.0
4,o
4.0
5.0
3.5
1.5
4.5
4.0
4.5
3.5
2.0
5.0
3.5
3.5
U.o

1.0
1.0
1.0
.0o

5.0
5.0
4.o
4.0
4.0


430
U.4


X X X X
x x
x


x



x
x x
x x
x
x
x
x x x


(1) Helminthosporium turcicum indici
Modified Ulstrup scale
0 = No blight to 5= severely blighted,


es from disease nursery planted Feb. 16,_195







Table 4. Sweet Corn Hybrid Observational Trial No. 3, Planted January. 29, 1955
Ear Characters
4 ,, s 4* 4 > U. ,
1- *P a)) ) ) (7) 0 -
S 2 2 1 7 0
bDl (D -I.0 9 0


3729 NK 88 5.0 2.0 .0 3.2 3.5 3 3 2 12 7.0 0.5 1.6 3



37254 NK 85 4 4 5.5 2.0 2.0 2.0 2,5 3 3 2 12 7.0 0.0 1.6 2
R 3 9 3 6.0 2 5.5 2.0 .0 3 3 3 16 8.0 0.0 17





R 6 Rog 93 4 4 5.5 2.0 6.0 2.0 3.5 2 2 16 8.5 0.0 1.9 3m
R 8 Rog 9 4 5 6.0 2.0 .5 -P 2.0 3.0 2 3 3 16 9.0 0.0 1.7 1
t O t ^ o 44 oCa id' '4: a A H4

__________ (--- (2) (3) () (5) (6) (7)
3562-3 NK 90 5 3 6.8 1.5 5.8 32. 1.5 3 2 2 14 7.5 0.0 1.6 3
364R 8 NK 83 5 4 6.5 2.5 6.0 3.0 2.0 3 2 2 2 7.0 0.5 1.7 2
37249 NK 88 4 4 5.0 2.0 4.0 3.2 3.5 3 3 2 12 7.0 0.5 1.6 3
3725R NK 8 4 4 3 .5 2.0 2.0 2.0 2.5 3 3 2 12 7.0 0.0 1.6 2
39256 NR 84 4 4 6.0 2,8 6.5 2.0 2.0 3 3 2 12 7.5 0.8 1.8 3
R 1 Rog 87 4 h 57. 2.0 3.0 2.0 1.0 3 3 2 12 7.5 0.5 1.8 2
R 2 Rog 90 4 4 5.8 2.0 5.0 2.0 3.0 3 3 3 1- 8.0 0.8 1.8 2
Ro3 Rog 94 3 4 6.0 2.0 56. 2.0 4.0 3 3 3 16 8.0 0.0 1.7 1
R( Rog 9 ii 5 6.0 2.0 5.5 2.0 2.5 2 3 2 12 8.5 1.0 1.5 3
R5 s Rog 95 4 3 5n 2.0 3.0 3.0 3.5 3 3 2 16 9.0 1.( 1.6 3
R6 Rog 93 4 4 5.5 2.0 6.0 2.0 3.5 1 b2 2 16 8. 0.0 1.9 3
R 7 Rog 93 3 4 6.0 2.0 5.3 2.0 2.5 3 2 2 7.5 --- --- 3
R 8 Rog 94 4 5 6.0 2.0 5.5 2,0 3.0 2 3 3 16 9.0 0.0 1.7 1
R 9 Rog 95 4 4 6.0 2.0 6.4 2.0 4.5 3 3 3 7.8 0.0 1.8 3
R 10o Rog 91 4 3 7.5 3.0 6.0 3.0 3.5 2 2 2 -- -- 1.0 --- 3
R 11 Rog 94 4 3 7.0 2.8 6.0 3.0 3.5 3 3 3 14 8.5 0.0 1.6 1
R 12 Rog 94 4 4 6.0 2,3 6.0 3.0 4,5 3 3 1 -- --- -- 3
R 13 Rog 93 4 5 7.0 2.0 6.0 2.0 3.0 3 3 3 6.5 0.0 1.8 3
Rl4 Rog 94 4 5 6.5 2.3 5.0 2.0 4.5 1 2 3 -- 8.0 0.5 1.6 2
Golden Security FHW 94 3 4 7.0 2.0 6.8 2.0 4.5 3 3 3 14 7.6 0.5 1.8 1

(1)* Source FHIWI.F. H. Woodruff & SonsS NK-Northrup King; Rog-Rogers Brothers.
(2) Seedling Vigor-Relative scale 1 weak to 5 vigorous. (3) Stalk-Relative scale 1 weak to 5 strong. (4) Helmintho-
sporium turcicum indicies from disease nursery planted Feb. 16, 1955. Modified Ulstrup scale 0=no bliJght to 5=
severely blighted, (5, 6, and 7) Relative scales 1 poor to 3 best, (8) Recorders opinion based on observation of
single 201 plots, gromer, and buyer preferences-
** Relative scale 1 best to 4 poorest.







Table 5. Sweet Corn Iybrid Observational Trial No.4 Planted March 9, 1955
Ear Characters Number of Ears


01 ( ( ) t- ) r ( b )
4. i 1-P o r



Golden Hybrid 337 FHW 75 20 3 3 3 16 8 1.0 17 39 5 2
10 H ir a-1I --4 01 ______
_______________(l) TZ (3)(t(()7) (Ii (5
Golden Security FHW 75 4.5 3 3 3 14 8.0 0.5 1.7 L3 0 0 1
Golden Hybrid f6 FH 75 3. 3 3 3 16 8.0 0.3 1.8 39 0 5 1
Golden Hybrid 28C9 M 75 4.0 3 3 1 12 8.5 1.0 1.6 40 0 0 3
Golden Hybrid 3171 FH 77 3.0 3 3 1 12 8.0 1.5 1.8 32 0 0 3
Golden Hybrid 33i47 FHW 75 2.0 3 3 3 16 8.0 1.0 1.7 39 0 5 2
Golden Hybrid 3952 FHB 75 3-5 3 3 3 16 7.5 0.5 1.7 50 4 1 3
53859 FM 75 3.0 3 2 2 12 8.0 1.0 1.7 39 1 5 3
Superchief Cor 75 4L.0 3 3 2 18 8.0 1.0 1.9 35 4 0 3
KVF54-95 Cor 77 3.5 3 3 2 12 8.0 0.8 1.7 41 0 0 3
Topyield ML 75 3.5 2 3 2 14 8.5 0.5 1.7 44 0 0 3
Melocross ML 75 3.0 2 3 2 14 8.5 0.5 1.8 40 0 0 3
Aristocross ML 75 4.0 1 2 2 18 9.5 1.5 1.9 32 0 0 4
Goldenyield ML 77 4.5 3 2 2 14 8.5 1.0 1.8 30 0 0 3
Golden Protector ML 77 4.0 2 3 3 16 8.0 0.5 1.7 (a) (a) (a) 3


Seed Source Cor Corneli Seed Co.;


FHW F. H. Woodruff &Sons, ML Iichael Leonard & Sons.


Helminthosporium turcicum index from disease nursery planted February 16, 1955.
4 and 5) Relative scale 1 poor to 3 good. (6, 7. 8) Yields from single plots 40' long, plants spaced 12 inches
apart in rows 3' apart. Fancy ears cobs 6" longer, US #1 cob 5"-6" and US#2 4" to 5". All three grades
with unfilled tips less than 1/4 length of cob. (9) Relativescale 1 best to 4 poorest.
Recorders opinion based on performance in this trial, grower and buyers preferences.


(1)
(2)
(3,


i








Table 6. Yields of Several Sweet Corn Hybrids in Large Plots. Plantedon January 28-29, and March 7, 1955.

January 28-29 Planting

Hybrid Source Plot Stand Yield in Crates Per Acre Comments
Area 4 O 5 5 6 Total
Acres Doz. Doz. Doz. Doz. Doz.


Carmel Cross
Golden Beauty
526
Golden Security
Super Market
Fla. Exp. 53-2
Fla. Exp. 53-3
Golden Security
51-4
68-7
68-13
69
Golden Security
Tempo
65-13
68-14
68-6
68-11
68-7


F. H. Woodruff
F. H. Woodruff
Northrup King
F. H. Woodruff
Robson
Robson
Robson
F. H. Woodruff
Crookham
Crookham
Crookham
Crookham
F. H. Woodruff
Corneli
Crookham
Crookhau
Crookham
Crookham
Crookham


0.85
0.85
0.85
0.85
0.85
0.85
0.85
0.28
0.28
0.28
0.28
0.28
0.07
0.07
0.07
0.07
0.07
0.07
0,07


Good
Poor
Good
Good
Good
Good
Good
Good
Good
Good
Good
Good
Good
Good
Good
Good
Good
Good
Good


118
182
181
149
134


210
255
270
210
250
180
225
210


107
28


9 3
16


270

131
67


253
107
146
228
181
163
177
210
94 364
236
49 180
277
255
270
210
280
180
225
210


Short ear, good fill, pulled too young
Tip blanking and extreme ear taper
Secondary ears inside shucks
Excellent tip fill
Secondary ears inside shucks
Secondary ears inside shucks
Secondary ears inside shucks
Some 10 row ears, and tip blanking
Considerable tip blanking
Some branched ear shanks
Shallow kernel,large cob,openroring
Secondary ears inside


Considerable ear tip blanking
Irregular kernel rowing
Ears have large butts

Branched ear shanks


March 7 Planting


Golden Security
68-13
69
Top Yield
Melocross
Super Market
Fla. $3-2
Fla. 53-3
51-4


F. H. Woodruff
Crookham
Crookham
Michael Leonard
Michael Leonard
Robson
Robson
Robson
Crookham


0.85
0.85
0.85
0.85
0.43
0.43
0,843
0.43
0.43


Good
Good
Good
Fair
Good
Good
Good
Good
Good


188
134
192
116
143
164
152
181
108


branching
Secondary ears inside shucks & Shank/
Variation in ear type










Table 7. Comparative Yields in Crates per Acre from Large Plots* of
Golden Security (double eared hybrid) and Seneca Supermarket
(single eared hybrid) at two Different Spacings in the Row.
Plots Arranged in the Order Listed. Planted January 29, 1955
at Belle Glade, Florida.

Hybrid Spacing in Yield in Crates/Acres* Total
the Row 4~ cozo size I5 doz. size

Golden Security 9' 194 26 220

Seneca Supermarket 9" 157 12 169

Golden Security 12" 191 36 227

Supermarket 6" 161 20 181

Golden Security 9" 188 25 213

Golden Security 12" 169 41 210


* Plots were 8 rows 1250 feet long or approximately 0.8 acre plots,




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