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Horticultural trials with sweet corn hybrids.
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 Material Information
Title: Horticultural trials with sweet corn hybrids.
Physical Description: Serial
Creation Date: 1958
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Genre: serial   ( sobekcm )
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Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
System ID: UF00076912:00001

Full Text


Everglades Station Mimeo Report 59-28


"MrI HORTICULTURAL TRIALS WITH SWEET CORN HYBRIDS, SPRING 1958

Howard W. Burdine and V. L. Guzmang1


yellow hybrid and two white hybrid commercial trials were planned to
up ta for determining seasonal adaptation of eight yellow hybrids and two
_.bride that have been selected as having possibilities for the area. How-
,the long severe cold during the winter of 1957-58 ruined the late fall
planted trial, and prevented the planting of further winter trials. The data
included herein are from trials grown in the spring of 1958.

How the trials were conducted. In order to screen large numbers of hybrids,
trials are conducted in three stages.

1. Observational trials These trials consist of new hybrids not observed
before, or hybrids on which a second observation is deemed desirable. The purpose
of these trials to to eliminate the large percentage of hybrids that have no
possibility of success because of ear type and to make an observation on suscep-
tibility to Helminthosporium turcicum.

2. Replicated trial These trials include materials that have been
selected from observational trials that seem to have possibilities for the area,
or hybrids that are made available to growers by seedsmen without having been
submitted to our observational trials; also hybrids being used in commercial
trials. These trials give a further observation on ear type, blight resistance
and an estimate of yield potential.

Commercial trials These trials are rather large in scope, usually consist-
ing of 12 to 16 rows about one-half mile in length. This size plantings give
opportunity for grower, inspector and buyer reactions to the hybrid. Only a
small percentage (1 to %) of hybrids started in observational trials reach these
trials.

Scope of the trials Beginning in 1957, grower interest in white hybrids,
resulted in starting a series of white hybrid trials in addition to yellow hybrid
trials already under way. Inasmuch as white hybrid sweet corn breeding is far
less intensive in scope than yellow hybrid, numbers of available new white hybrid
are fewer.

Plot size and design. Observational plots are single unreplicated plots, for the
most part comprising 50 feet of row in which 40 feet were harvested. In some
cases where seed is limited, 25 feet segments of row are planted in which 20 feet
of row are harvested.

The replicated hybrids are planted in single row 50-foot plots with four
replications. Forty feet of row are harvested.

Plants in each plot are thinned to 12 inches in the drill.


i/ Assistant Horticulturist and Associate Horticulturist, respectively,
Everglades Experiment Station, Belle Glade, Florida


May 8, 1959









Commercial trials for yellow hybrids in the 1958 season consisted of single
blocks of 16 rows, 36 inches wide, 2550 feet in length, each variety occupying
2.8 acres. Seven hybrids were planted in this plot, one of which was not harves-
ted because of poor stand.

Commercial trials for white hybrids consisted of 12 rows, 2550 feet in .
length, each variety occupying about 2.1 acres. Only two varieties were used
in these trials which were planted and harvested by the grower.

Fertilization and soil type. Since these trials were grown on the farms of
grower-cooperators2/, the grower's fertilizer programs were followed. In all
cases these plots followed celery and residual fertility was fairly high. This
was supplimented with 600 to 1000 lbs. per acre of commercial fertilizer varying
from 3-12-12 to 4-12-21, depending on individual grower. Fertility was not con-
sidered a limiting factor on any of the plots. Soil type in all cases was well
mature Everglades peat or Okeelanta peaty muck.

Disease and pest control. All plots were sprayed and/or dusted for control of
Helminthosporium turcicum and insect damage according to grower practice.
Results

Yellow hybrids. Observational trial Eighty-three yellow hybrids were screened
and results are given in Table 2. On the basis of appearance for market accept-
ance the following hybrids were recommended for elevation to the 1959 replicated
trials:

1. Late maturing hybrids

a. R-52424 Rogers Bros. Seed Co.
b. Harris Goldcup J. H. Harris Seed Co.
c. Golden Sirloin Michael Leonard Co.
d. R-8C Rogers Bros. Seed Co.
e. R-8E Rogers Bros. Seed Co.
f. R-11B Rogers Bros. Seed Co.
g. R-11E Rogers Bros. Seed Co.
h. Hybrid 107 Ferry Morse Seed Co.
i. Hybrid 106 Ferry Morse Seed Co.
3. B.G. 42x2076 Glenn Smith

2. Carmel Cross type hybrids

a. Seneca Carmelcross Robson Seed Farms
b. 5155-1 Crookham Co.
c. 5156-2 Crookham Co.
d. 5156-4 Crookham Co.
e. 5156-6 Crookham Co.
f. 5156-8 Crookham Co.

Replicated trial On the basis of performance during the 1958-59 season,
hybrid #680-35 should be elevated to commercial trials.

Commercial trials Results are given in Table 5.

2_ The writers grateful acknowledge the assistance of A. Duda & Sons, S. N.r
Knight, and Evans and Rogers on whose farms these trials were grown.









The following hybrids should be continued in commercial trials to determine
relative seasonal adaptation.

1. Golden Security check variety
2. Florigold
3. R-8
4. Sixty-pak
5. Woodruff #6
6. Hybrid 85-1
7. Exp. 200
8. Florida 104

These varieties all have some resistance to Helminthosporium turcicum and
have an acceptable ear type. There is considerable seasonal variation in relative
yield and to some extent in ear type. Also resistance to Helminthosporium
mayadis is relatively unknown on most of these hybrids.

Cooperation with Department of Food Technology should be continued to
determine quality differences between these hybrids as well as between seasons.

White Hybrids. Results are given in Tables 3, 4 and 6.

Growers have become increasingly interested in white hybrids.

Special conditions The replicate# and observational plots were planted
February 8. Due to continued low temperatures, plants did not emerge until about
March 1. This accounts for the long seeaon from planting to maturity. Also
high winds on May 10 damaged the plots severelyy and account for the poor per-
formance of several varieties previously showing promise.

Observational plot Table 4, 15 h brids were observed.

The following hybrids should be elevated to the 1959 replicated plot.

1. Cr. 770-1, Crookham Co.
2. Cr. 772-1, Crookham Co.
3. White Hybrid #31, Abbott & Cobb Seed Co.
4. R-7705, Rogers Bros. Seed C9.

Replicated plot Results are given in Table 3.

The following hybeids should be repeated in the 1959 replicated trials.

1. Silverliner (check), Cornell Seed Co.
2. White Hybrid #31, Abbott & Cobb Seed Co.
3. 14 x 11, Northrup-King See4 Co.
4. R-62683, Rogers Bros. Seedf o.

R-62708 should be dropped as it exhibited for the first time a high percen-
tage faciated ears.

Commercial trial Results are give in Table 6. Only two white hybrids,
Silverliner and White hybrid #31 were available for commercial trials this season.







.4-


Explanation of columns numbered 1-18 in hybrid sweet corn trials, Tables 1-4.

(1) Source of seed: Name of company or individual supplying the seed. A & C -
Abbott & Cobb Seed Co., Philadelphia, Pa.; Cor. Corneli Seed Co., St.
Louis 2, Mo.; Cro. Crookham Company, Caldvwe, Idaho; F. M. Ferry Morse
Seed Co., Detroit, Michigan and Salinas, California; Kil. Kilgore Seed Co.,
Belle Glade, Fla.; J. H. Joseph Harris Seed Co., Rohester, N.Y.; M-L -
Michael Leonard Co., Aes, Iowa; N-K Northrup King & Co., Minneapoli- 13,
Minn.; Rob Robson Seed Farms, HMI, N.Y.; Rog Rogers Bros. Seed Co.,
Caldwell, Idaho; Snith Glen M. Smith, Assoc. Geneticist, Dept. of Botany,
Purdue Univ., Lafayette, Ind.; Vau. Allen Vaughn, Vaughn Seed Co.; F.H.W. -
F. H. Woodruff & Co., Division of Associated Seed Growers, Milford, Conn.

(2) Plant height: Mean plant height in feet to nearest j ft. of 10 consecutive
plants per plot, or a total of 40 plants for Tables 1 and 3, and 10 plants
for Tables 2 and 4.

(3) No. suckers per plant: Mean number of suckers on 10 consecutive plants per
plot, or a total of 40 plants for Tables 2 and 4.

(4) Sucker height: (feet): Tables 2, 3 and 4 only; mean height of tallest
suckers measured to nearest ft. on 5 consecutive plants per plot, or a
total of 5 plants for Table 2 and 4 and 20 plants for Table 3.

(5) Ear height (feet): Mean height in feet to nearest k ft. of 10 consecutive
plants per plot 'in Tables 2 and 3 and 4, or a total of 10 plants in Tables
2 and 4, or 40 plants in Table 2 measured from ground level to base of ear.
Note: All height measurements are taken from ground level between plants
in a row.

(6) Ear length (inches): Mean ear length of 10 randomly selected marketable
ears from two plots for replicated hybrids or a total of 20 ears for Tables
1 and 3, or a total of 10 ears for Tables 2 and 3.

(7) Ear diameter (inches): Mean ear diameter, measured midway between butt and
tip of ear of 10 randomly selected marketable ears from each of two plots
for replicated hybrids. Tables 1 and 3 represent mean ear length of 20 ears,
Tables 2 and 4 represent mean ear length of 10 ears.

(8) Husk color: Based on intensity of green color, D a dark green; M-D :
medium to dark green; M a Medium green; L-M s light to medium green, L u
light green.

(9) Unhusked appearance: Rated on a 1-4 scale. 1 a poor, 2 : fair, 3 : good,
4 : excellent. Figures in Tables 2 and 3 are means of four separate ratings
on 4 replications. Tables 2 and 3 are single plot ratings.

(10) Saked gp;earance: Rated on a 1-4 scale, I : poor, 2 fair, 3 s good,
4 a excellent. Figures in Tables 1 and 3 are means of 4 ratings on each
of four replications. Figures in Tables 2 and 4 are single plot ratings.

(11) Kernel type: Based on width of kernel. N : narrow, M s medium, B s broad
kernel type.






-5-


(12) Mean Unfilled Tip (inches): Mean length of unfilled tip of 10 randomly
selected marketable ears per plot. Figures in Table 1 and 3 are means of
40 ears. Figures in Table 2 and 4 are means of 10 ears.

(13) No. Rows (Majority): No. rows per ear on 10 randomly selected ears per
plot. Tables 1 and 3 are from 40 ears, Tables 2 and 4 from 10 ears. If
30 percent of the total ears looked at had different row counts, from the
average two row numbers, i.e. 14-18, at least 30 percent of the total ears
looked at had 14 rows and at least 30 percent had 18 rows.

(14) No. Plants Harvested: Number of plants remaining after blocking off plots
to 40 feet in length. In all trials during the 1957-58 season great diffi-
culty was had in getting and maintaining stand. Perfect stand would consist
of 40 + 1 plant per plot, or a total of 160 4 4 plants in Tables 1 and 3
and 40 4 1 plant in Tables 2 and 4 with the exception of varieties marked
with an asterick (*) in Table 2 in which case plot size as harvested was
20', and in which case 20 4 1 plant would make a perfect stand.

(15) Total Number of Ears: Total number of ears harvested that would grade U.
S. Fancy or U. 8. #1.

(16) No. Marketable ears per plant: Total U. S. Fancy and U. S. #1 Ears
No. of Plants

This figure gives an estimate of yield potential under the conditions of
the particular plot. Stand as a whole was too variable to permit an
estimated crate per acre yield.

(17) Days to Maturity: Number of days from planting until estimated optimum
maturity for fresh market purposes.

(18) Preference: Preference based on opinion of the scorer of suitability for
fresh market purposes based on appearance, and indicated yield potential.
Resistance to Helminthosporium turcicum, is not included in this rating.





/








I






-6-
Table 1. Yellow Sweet Corn Hybrid Replicated Trial Spring 1958.
& Sons, North Rutledge Field 11. Planted Feb. 28, 1958.


Grown on the farm of A. Dda
Harvested May 14 May 19, 1958.


Column Number (1) (2) (3) (4) (5 (6) (7) (8) (9) (10) (11) (12) (13) (14) 15) ) (17) .(
Plan Char. Ear Characteristics Yield Data




-' -0* 0

1 34 42 4 ON I
0 Z- I. to 0. 4 S.


S 0 0 0



1. Golden Security FEW 6.5 3.5 7.2 1.7 M-D 3.6 2.7 N- 0.5 14-16 148 238 1.61 79 1.5
2. Florigold F 5.6 3.3 7.9 1.7 D 4.0 2.7 M 0.3 12-14 141 174 1.23 78 1.5
3. Sixty-pak Kil 5.8 2. 7. 1.5 D 3.4 2.5 N 0.2 12-4 140 184 1.31 80 2 .0
85-1 Cro. 5.8 2.1 8. 1.7 5 M 2.4 3.3 N .4 14-16 147 164 1.12 77 1.5
5. woodruff #6 MW 5.8 2.1 8.3 1.7 M-D 2.9 3.3 N 0.2 14-16 148 157 1.06 77 2.0
7. 8-8 Rog. 6.0 1.9 8.1 1.5 M 3.3 2.8 N 0.2 114 144 179 1.24 78 1.5
8. R-1 Rog. 5.9 2.7 7.8 1.5 M 3.0 2.5 N 0.3 12-14 14 185 1.28 78 .0
9. Gene Scixteen au. 6.8 3. 7.3 1.7 M-D 3.1 2.8 N-M 0.5 12-16 136 216 1.59 76 3.0
l2. Floiol. 456 d 5.6 1.3 7.4 1.7 L-M 2.4 1.7 N-M 0.3 12-14 145 150 1.23 76 31.5
3. Fla. y476 K 5.7 2.7 7.9 1.6 L-MD 3.0 .5 N-M 0.4 12-14 154 186 1.21 80 2.0
12. 8-365-716 C.H. 6.4 2.1 7.7 1.7 LM 2.3 2.0 N-M 0.5 14 153 246 1.61 76 2.5
14. B-48 Rog. 5.8 2.9 7.9 1.6 E-M 2.0 2.7 N-M 0.5 12-14 143 190 1.33 79 2.5
15. 680-35 Cro. 6.8 2.3 7.3 1.7 M-DM 2.5 3.5 N-M 0.2 16 150 20016 1.33 78 2.0
16. Ev ertener M-L 5.6 1.3 8.2 1. 1. N-M 0. 1 M 0.6 1-16 13645 150 1.06 79 3.0
19. Seneca Warpath Rob. 6.7 3.2 7.9 1.7 M-D 3.1 2-5 N-M 0.4 14 138 174 1.26 78 2.0
74* UtP- 503 Van. 6.6 2.4 7.3 1.9 M-D 3.0 2.2 N-M 0.5 14-18 125 129 1.03 80 2.5
130- (57) -Row 383 Smith 5.5 3.2 7.5 1.6 L-M 2.0 2.0 N-M .04 12-14 144 155 1.o8 74 2.5
131. B.G. 346076 SithW 5.5 2.7 -- 7.3 1.7 M-D 23. 1.5 M-B 0.2 12-14 152 210 1.38 75 2.5
132. B.G. 1x2076 anith 5.7 3.0 7.5 1.7 L-M 2.3 2.2 N-M 0.4 14 150 172 1.15 79 2.0
L.S.D. .05 0.132 ears/pl. L.S.D. .01 ears pl.







Table 2. Yellow Hybrid Sweet Corn Observational Trials. Grown on the farm of A.
N. R. field #11. Planted Feb. 28, 1958. Harvested May 10-19, 1958.


Duda & Sons,


Column umber T() (2) (3) (4) (5) (6) (7) (8)(9 (10) (11) (12) (13 1) (1 (5) (16) (17 8)
Plant Characterisics Ear Characteristics Yield Data


@3 i I 4 )
,, @ed A .







m ri
17. Hrri Goldru J.. 5.6 3.1 7-9 1.6 3.0 .5 0.7 14 1.32 7 .0
.c3 d 6V D M 9









23. G. Tbrid 476 FEW 6.0 3.8 7.6 1.6 M-D 3.5 2.0 N-M 1.5 14-16 36 60 1.67 79 3.5
S 5 .2 1.5 6.9 1.8 -M 1.5 1.0 N 1.3 14-16 39 36 0.92 76 4.0

7. r 87 F 5.3 3. 7.6 1.6 M .5 1 1.5 -16 36 31 0.86 78 .0
Hybrid ofA _ as 4 1 114.


1729. HaG. ris d 89 F 5.9 2.6 7. 1.6 M-D 30 2 .5 N 0.7 14 36 37 1.03 78 32.0
30. orthen security -L 5.6 3.5 7. 1. M-DM .0 1.0 -M 13 8-10 37 54 1.42 79 1.5
21. TG. Hybrid 47 FM 5.9 3 7.7 1.68 2.0 10. -B 0.8 14 37 33 0 .89 72 4.0
32. Souybd 45 M- 6-. 2.1 19. 1.9 LM 1.5 1.0 M 1.7 14-16 37 43 0.97 78 3.0
33. G DiolH d 4 67. 3.8 87. 1.6 M-D 3.0 2.0 N-M 1.0 164 36 6 1.62 79 3.5
24. G. Hybrid 484 EMW 5.2 1.5 -. .9 1.8 L-M 1.5 1.0 N 1.3 14-16 39 36 0.92 76 4.o
25. G. Hybrid 485 F 5.8 07 8.1 1.8 L-M 2.0 1.0 N-M 15 14 39 38 .97 76 4.0



24. Golden Sensrton M-L 6.5 3..5 8.8 1.7 L 3.0 30 1.0 3- 2.0 12-14 37 1.o82 78 4.0
26. G. Hybrid 486 PHW 6.2 2.7 59- 7.3 1.7 M 1.5 1.0 N 1.2 114-16 39 155 1.41 74 4.
27 G. THybrid 487 F 5 3.4 7.6 1.8 L-M 2.5 1.0 N-M 1.5 14-13636 3 0.86 78 4.0
28. G. Hybrid 488 FW 6.53 2. 7.0 1.6 L-M 2.0 2.0 N 0.9 1-14 38 40 1.05 78 3.0
29. G. Hybrid 489 FEW 5.9 2.6 7.8 1.8 L-M 2.5 1.0 NM 1.0 11-16 36 37 1.23 78 3.5
30. Northchief 1 M-L 5.6 3.5 784 1.5 L-M 2.0 1.0 B 1.1 8-10 37 46 1.24 76 4.0
31. Treasure gold FM 5.9 3.4 7.2 1.8 L 2.0 0.5 -B 0.8 12-14 37 33 0.89 72 4.0
32. SoutHigold M-L 6-4 2.1 9.9 1.9 L 1.5 1.0 M 1.7 14-l6 37 36 097 78 4.0
33. Deligold M-L 7.1 2.8 8.4 1.9 L-M 2.0 2.0 -M 1.0 16 34 38 1.12 79 3.0
34. Golden Sensation M-L 6.5 3.5 8.0 1.7 L 1.0 1.0 M-B 2.0 12-141 37 40 1.08 78 4.0
35. Tendertwin M-L 7.0 2.2 8.8 1.8 L-M 2.0 1,0 N-M 1.6 16-18 36 30 0.83 78 4.0
36. Hybrid 100 FM 6.5 2.2 7.2 1.8 L-M 2.0 2.0 M 0.3 12-14 29 32 1.10 77 2.5
37. Bright Gold M-L 17.0 1 3.9 8.0 1.7 L-M 2.5 2.0 N-M 1.1 12-14 L35 43 1.23 78- 2.5
S S







Table 2. -


-8-
Continued: Yellow hybrid Sweet Corn Observational Trials grown on the farm of A. Duda
& Sons, N. R. field 11. Planted Feb. 28, 1958. Harvested May 10-19, 1958.


Column NRumber


Hybrid


38.
39.
40.
41.
42.
43.
44.
45.
46.
47.
48.
49.
50.
51;
52.
53.
54.
55.
56.
57.


Floriglade
Gulfgold
Northgold
Tendermarket
Arist. Bant.Ever,
Hybrid #103
Golden Serloin
R-8 A
R-8 C
R-8 E
R-11 B
R-11 C
R-U1 E
R-51 C
R-52
R-53
R-54
R-55
R-56
R-57


0
0

0
0
0


eC2 1(11


jL4. I(lI10(1 (71 WI~


Plant Characteristics


a

0
'-I
a

Tt


0
".4
54
4)
4'
0)
UE


Ear


o4
0
0


-9Cha)0teris) ( (_12) (13- __.) ) (Ye 1
Characteristics T Yild Data


*a


I

9

a
g
a)


0


94



=I
+
*g


4'
"4
54

0
S,


(0
IS



'I
4'
4'
0af
54


- .3 -- -7 t 1- --9-r .3 - I.


M-L
M-L
M-L
M-L
M-L
FM
M-L
Rog.
Rog.
Rog.
Rog.
Rog.
Rog.
Rog.
Rog.
Rog.
Rog.
Rog.
Rog.
Rog.


6.5
6.6
5.0
6.5
6.9
5.3
6.1
6.8
6.6
6.5
6.8
6.7
6.2
6.6
5.6
6.5
6.1
6.5
6.3
6.2


3.0
2.5
3.0
2.8
2.1
2.8
3.3
2.0
2.3
1.9
2.4
1.6
2.1
2.8
2.4
2.5
2.7
3.7
3.2
0.3


8.7
9.4
6.9
8.5
8.3
6.9
7.9
8.1
8.1
7.6
8.3
8.4
7.6
8.0
7.6
8.2
7.9
8.0
7.9


1.7
1.8
1.6
1.8
1.7
1.7
1.7
-
1.6
1.5
1.6
1.5
1.6
1.4
1.8
1.5
1.5
1.5
1.7
1.9


L-M
L-M
L-M
M
M
M
L-M

L
L
L
L-M
L-M
L-M
L-M
L
L
L
L
L


2.0
2.5
1.0
3.0
3.0
2.0
2.5

2.0
2.5
2.0
2.0
3.0
1.0
2.0
2.0
2.0
1.0
2.0
2.5


1.0
1.0
0.5
1.0
2.0
2.0
3.0

3.0
3.0
2.5
2.0
3.5
1.0
2.0
2.0
2.5
2.0
1.5
1.5


M-B
M
M
N-M
N
M
M


N
N
N-M
N-M
N-M
N-M
N
N
N
N-M
M-B


1.4
0.8
0.8
1.1
1.9
0.3
1.0

0.7
0.4
0.7
0.4
0.9
0.8
1.0
0.9
0.3
1.0
1.5
1.7


12-14
14-16
12-14
16-18
16-20
12-14
12-16

14
14
14
12-14
12
12-14
14-16
14-16
14
12
12-14
16-18


4)-
r4


SC
ra r

4--


a







I.


0
4'

4-3

$4 $
co


0
0

4)


- I -


1.08
1.33
1.30
1.08
0.87
0.81
1.00

1.00
1.11
1.21
0.61
1.41
1.80
1.51
1.33
1.78
-
0.79
1.00


3.5
3.0
4.0
3.0
3.0
3.0
2.0

2.0
2.0
2.0
3.0
1.5
3.5
2.5
2.5
2.5
3.0
4.0
4.0


. .


------ 7 ~--- ----_ ---~___I___~ __ ___


(17) J-(:


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( ) ), (6 M Ii .


1 1


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I-1-- -1 I - -~ -1 i 'F~"~--~7-L-~IL~-f~


- I m





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.


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.


. .


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1






-9-
Table 2.-Continued: Yellow Bybrid Sweet Corn Observational trials. Grown on the farm of A. Duda & Sons,
N. R. field #11. Planted Feb. 28, 1958. Harvested May 10-19, 1958.

Column Number (1) () (3) (4) (5 (6) (7) (9 (10) (1) (12) (13) (14 (15) (16) (17 II18
Plant ar. Ear Characte ristics Yield Data





4' id 5 d )4





58. -58 o. 6.2 2.9 8.41.6 L 2.5 2.5 N-M 1.5 12-1 36 46 1.28 77 2.5
59 -59 7.1 2.0 8.2 1.6 L-M 2.5 .o 0.8 14 39 52 1.33 79 2.5
60. -6o. 6.1 1. 2.0 20 -M 0.9 12-14 37 45 22 81 3.
-61 1.5 1.5 13 12-4 39 1.08 80 3- .5
62. R-682 Rg. 6.3 1. 98.4 1.6 L-M 2.5 2.0 N-M 1.3 12 39 4 1.15 79 3.0
63. R-63 Ro. 6. 2. 1. L-M2.0 2.0 0.4 12 38 4 1.36 78 2.5

60. R1-640 6.1 2. 17 L-M 3.0 2.0 N-M 0.5 12 37 U7 1.27 80 2.5
65. -65 o. 6. 30 .. 1.- 3.0 1.5 B 1.2 12 38 45 1.18 80 3.5

66. Code 10 Ro 5.3 3.1 .81.1 7.5I 1.7 M 3.5 2.0 M-B 0.5 12-14 38 38 1.00 79 2.5
67 Seneca Rob. 4.7 2.83.0.97.6 1.8 30 20 M 0.9 12-14 3 45 1.18 71 2.0
70. 665-50.ro 3.0 5 7 M o .o 1.2 14-16 39 38 0.97 79 3


71. 665-45 ro 6.8 1.1 .7.8 18 L-M 2*5 2.0 M 1.2 16 40 4o 1.00 78 3.0
72. Exp. 501 au. 72 1.8 8.0 1.6 M 2.5 1.5 N-M 1.1 12-l 35 6 1.31 3.0
73 Exp. 502 au. 6.2 2.9 7.5 17 2.5 1.5 M 1.o 12-16 39 o l.O3 78 3.0
7. R-. 505 g. 6.2 2.9 7. 1. LM 2.5 2.0 -M 1.1 12-1 36 43 1.23 78 2.5
75. Ep- 509 va. 7.1 2.0 8.2 1.7 L-M 2.5 2.0 NM 1. 14 33 39 1.18 79 2.5
76. x-6 51 Rog. 6.1 1.2 8.1 1.6 L-M .0 12 3 45 1 8 3
67. R61 Ro g. 6.3 2.6 7.5 1.5 M 3.0 1.5 M 1.3 12-14 22 314 1.08 78 3.0
62. R-62 Rog. 6.3 1.4 9. 1.6 L-M 2. 2.0 M .of 12 39 45 1.1row 79 3.0
63. R-63 Rog. 6 .3 2.4 1.6 7.7 1.4 L-M 2.0 2.0 N-M 0.4 12 38 48 1.26 78 2.5
64. R-64 Rog. 7.4 2.7 7.9 1.7 L-M 3.0 2.0 N-M 0.5 12 37 47 1.27 80 2.5
65. R-65 Rog. 6.9 3.0 8.4 1.6 M-D 3.0 1.5 B 1.2 12 39 45 1.18 80 3.5
66. Code Co Rob. .3 3.1 4 1 7.5 1.7 M 3.5 2.0 M-B 015 12-14 38 38 1.00 79 2.5
67. Seneca Ca50 elcro1 Rob. 4.7 2.8 3.60.9 7.6 1.8 M 3.0 2.0 M 0.9 12-14 38 45 1.18 71 2.0
69. 68o-37 Cro. 6.6 3.5 7.4 1.7 L 1.5 2.5 M 0.9 14-16 36 32 0.89 79 3.5



74. EmP. 505 Vau. 6.5 2.4 7.1 1.8 m 2.5 2.0 N-M 1.1 14-16 26 32 1.23 78 2.5
75. Fxp. 509 Vau. 6.7 2.4 8.2 1.7 L-M 2.5 2.0 M 1.4 14 33 39 1.18 79 2.5
76. Exp. 511 Vau. 6.0 1.5 -
77. Pxp. 517 Vqau. 6.6 2.6- 7.5 1.6 M 3.0 1.5- 1M1 1.3 12-14 22* 1.41 78 3.0
20 feet of row harvest ed on y.






-10--
Table 2. -Continued: Yellow Hybrid Sweet Corn Observational Trials. Grown on the


Sons, N. R. field 11.


Planted Feb. 28, 1958. Harvested May


farm of A. Duda &
10-19, 1958.


-~~~~~~~~~ ~~ ~I .. .Ir t... .I-. ,. 9j I- U.


Column Number


Whrhid A


1 5( L*} LS) to]


l,.1-[J


C olumn. I N 3 (4 ( 5 . .. (- 7 M *t *


k'Jafl uflaracceriscics


a
54



[I


Y


s,
$4
(D
Ma
I


S

' 3


4)
0

04
2


'I

Ir
Y1


I
.r4
54
0)

I


r~ar unlarateristfca


(D
@1




,


I


&1

Ad
0


i-
0)


0
0
40


p-
4)
Id
0
i

F
8


- rI I II I .


78. Bxp. 517
79. Hybrid #1304
80. Hybrid #1305
121. 5156-1*
122. 5156-2*
123. 5156-3"
124. 5156-4*
125. 5156-5*
126. 5156-6*
127. 5156-7*
128. 5156-8*
129. 5156-9*
84. Hybrid 105
85. Hybrid 106


133. B. G.
134. B. G
135. B. G.
136. B. G.
137. B. G.
138. B. G.
139. B. G.
140. B. G.
14W., B. G.


4 x 2076
12 x 2076
17 x 2076
27 x 2076
37 x 2076
38 x 2076
40 x 2076
42 x 2076
1C0 :76


Van.
N-K
N-K
Cro.
Cro.
Cro.
Cro.
Cro.
Cro.
Cro.
Cro.
Cro.
FM
FM
Smith
Smith
Smith
anith
Snith
Smith
Smith
Smith
Saith


7.1
6.8
6.7
14.6
i4.8
4.9
4.7
4.4
4.6
4.6
4.7
4.5
6.4
6.4
5.9
5.5
5.8
5.3
5.4
5.7
5.9
5.5
5.P2


2.2
2.3
2.3
3.6
3.2
2.7
2.7
2.4
2.1
2.4
2.1
3.3
2.3
1.9
1.6
1.8
2.9
2.5
2.2
2.6
3.2
2.8
2.4


3.6
4.3
4.1
4.1
3.1
3.2
3.2
3.9
4.2
-
-
-
-
-
-
-
-
-
-


ix
1.0
1.2
1.1
1.1
0.8
1.0
1.0
1.0
1.1

-
-
-
-


7.5
7.6
8.4
7.1
7.5
7.6
7.4
7.5
7.6
7.4
7.2
7.1
7.2
8.0
8.1
6.9
7.2
7.3
-7
7.9
7.6
7.2
7.3


1.6
1.6
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.6
1.6
1.7
1.6
1.6
1.6

1.6
1.6
1.7
1.7


M
M
M
L-M
L-M
L-M
L-M
L-M
L-M
L-M
L-M
L-M
M-D
M-D
L-M
L
L
L-M
-
L
L
L


2.5
3.0
2.5
3.0
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
3.0
3.0
2.0
2.0
2.5
2.5

2.5
2.5
3.0
2.5


- -
2.0
2.0
3.0
3.0
2.5
3.0
2.5
3.0
2.5
3.0
2.5
2.0
3.0
1.5

2-0
1.5

2.0
2.0
2.0
2.0
2.0


N-M
M
B
B
B
B
B
B
B
B
B
N-M
N
B

B
B

B
M
M-B
N-B


1.4
0.3
1.1
0.6
0.8
0.7
0.5
0.9
0.7
0.4
0.7
0.7
1.1
0.3
1 8-
0.8
0.5
0.7

0.7
0.9
0.4
0.1


12-14
12
12
14-16
12-14
12-14
12-14
12
12-14
12-14
12-14
12-14
12-14
14
12-14
12-14
12-14
12-14

12-14
12-14
12-14
12-14


0i
43
10


la
.1
po


37
35
19*
19*
20*
20o
19*
20*
19*
18*
17*
34
38
37
39

38

39
38
37
36


xleLO. uata Ia


a

.0-
.F~






43


: 0




F4
0).

U'


1.19
1.09
1.16
1.42
1.20
1.25
1.16
1.05
1.00
1.28
1.59
1.47
0.97
1.41
1.23
1.32
1*37

1.33
1.05
1.35
o.q4


0



ra
4)





aaS
iX


a)
CD
0
4)
544
8)


2.5
3.0
1.5
2.0
2.5
2.0
2.5
2.0
2.5
2.0
2.5
2.5
2.0
3.0
-
2.5
3.0

2.5
2.5
2.0
2.5


- *- -_ --- -


Plat arra- t- i -Rw 2m- ae 1 * *


- --


r


-


- -~- T


I r


4-I


- -


.


.


I


I


,


,


I


(171 (18)


1~11 lol ~Y?


IWul I.v1- (M.')





-11-
Table 3. White Sweet Corn Hybrid Replicated Trial Spring 1958. Grown on the farm of
Mr. S. N. Knight. Planted 2/8/58. Harvested 5/12-17/58.

Column Number (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) (15) (16) (17) (18)
Plant Cha acteristics Ear C laracteristies Yield Data.








86. slverliner88cot. 5.9 2.7 6.2 3.1 7.8 1.8 MD 3.5 2.8 M-s 1.O312 148 132 0.89 9.3 .o
87yr 31A 6.3 .5 5.8 .1 7.5 .3 3 0.5 1-18 15 155 1.0


4W. Cross snt Cro. 5.9 5.1 7.6 M 1.5 1216 0.8 93 3.0
68 2 5 3 1 D 3 2 .









92.. 8 o. 7.o s .5 5.9 3.3 7.o 2.1 D 3. I 2.7 N 5 8-0 13 17 o.6 9 .
00 a





Evergreen 3 x 33 FW 7. 2.8 6.1 3 7. 1.9 LM 1.7 1.5 -M 1.7 150 .0 0
Hybrid 0i 0) M E-4 0
86. Silverliner Cor. 5.9 2.7 4.2 3.1 7.8 1.8 M-D 3.5 2.8 M-B 1.0 12 148 132 0.89 93 2.0
87. Hybrid 31 A&C 6.3 2.5 5.8 3.1 7.5 2.0 L 2.3 3.2 N-M 0.5 14-18 154 155 1.01 96 1.5
88. W. K. Golden Cross FEW 5.7 2.9 4.8 3.1 7.7 1.8 M-D 3.3 2.5 M-B 1.0 12-14 151 142 0.94 194 2.5
89. W. Cross Bantam MCr. 5.9 3.2 5.1 3.0 7.6 1.7 M 2.6 2.1 M-B 1.5 12-14 115 97 0.84 93 3.0
go90. 14 x 11 N-K 7.8 2.9 7.7 3.4 7.1 1.8 M 2.1 2.2 N 1.2 14-18 146 152 1.04 96 2.0
91. B62683 Bog. 6.8 2.2 5.3 3.1 7.0 1.9 D 3.6 2.7 N-M 0.5 14-18 14o 158 1.13 96 2.0
92. R62708 Rog. 7.0 2.5 5.9 3.3 7.0 2.1 D 3.7 2.7 N 1.5 18-20 153 147 0.96 96 2.5
93. Evergreen H. 3 x 33 FEW 7.4 2.8 6.1 3.1 7.1 1.9 L-M 1.7 1.5 N-M 1.7 14-18 139 150 1.08 97 3.0
94. Silver Cross Bantam M-L 6.0 3.1 5.7 2.8 6.8 1.8 L-M 1.6 1.7 N-M 1.1 12-14 116 156 1.34 94 3.0
95. Silver Cross 16 M-L 7.1 3.3 6.2 3.1 6.9 1.9 L 1.3 2.7 N-M 0.6 14-18 126 156 1.24 94 3.0
96. Peoria Kil. 7.2 2.3 4.9 3.1 7.2 11.8 L-M 1.8 1.1 N-M 1.2 12-14 135 174 1.29 98 .0


L.S.D. .05 a
L.S.D. .01 -






-12-


Table 4. White Sweet Corn Hybrid Observational Trial, Spring 1958. Grown on the farm of
Mr. S. N. Knight. Planted 2/8/58. Harvested 5/12-16/58.


Column Number (1) (2) (3) (4) (5) (6) (7) () (9) (10) (11) (12) (13) (14) (15) (16) (17_ (18)
Plant Characterist.ics Ear ,Characteritics Yield Data_



..- -- a ,, -
S r1 40




e e a *u V a
*o o a d o a .p r
o 0



SI da 40 a a S



98 R-o 6.6 2.9 5.2 3 78 2.0 M 3. 30 1 6-8 37 0.89 95
R-010 Rog. 6.4 2.7 60 30 7.5 18 5 2.5 06 1.03
23 og. 6.2 2.9 5.2 3.3 7 1.8 2.0 1.2 12-1 29 0.7




101. R-7725 Rog. 5.9 3.1 5.6 2.8 6.6 1.6 L 1.0 0.5 M-B 1.9 10-12 36 all culls 94 1.0
102. Silverheen M-L 6.8 3.0 6.0 2.9 6.6 1.9 L 1.5 2.0N 1.2 14-16 34 37 1.09 94 3-0
Hy10 br. idStowel hybrid M-L 6.3 2.7 5.7 9 69 19 L 2.0 2. -M 0.9 16-18 36 35 97 93 2.5
97. s.Everlgner Cor. 6.0 2.9 5.0 3.3 7.7 1.7 M 3.0 2.0 M-B 0.8 12-18 45 139 098 93 2.0
98. R-7705 Cog. 6.6 2.9 5.2 3.3 7.8 2.0 9 3.0 3.5 0.4 16-18 36 13 0.89 95 2.0



99. R-77010 Rog. 6.4 2.7 6.0 3.0 7.5 1.8 L-M 2.5 2.5 M-B 0.6 12 37 38 1.03 96 2.5
10 Cr. R7722 rog. 6.5 2.9 5.0 2 3.9 7. 1.8 M 3.0 1.0 M 1.27 12-14. 39 29 01. 94 3.5
101. r. 7725 Rog. 5.9 .91 5.6 2.8 6.6 1.6 L 1.0 0.5 M-B 1.3 10-12 36 all 1culls 93 3.0
102. Silversheen M-L 6.8 3.0 6.0 2.9 6.6 1.9 L 1.5 2.0 N 1.2 14-16 34 37 1.09 94 3.0
103. Silversweet 16 M-L 6.9 2.9 5.0 3.4 6.7 2.0 L 2.5 3.0 N-M 0.8 1A-18 22 42 1.91 94 2.0
104. Stowells Hybrid M-L 6.3 2.7 5.7 2.9 6.9 1.9 L 2.0 2.0 N-M 0.9 16-18 36 35 0.97 93 2.5
105. S.Evergreen Hybrid FM 7.6 3.1 6.1 3.3 7.1 1.9 L 2.0 2.0 N 1.3 14-18 35 45 1.29 97 2.5
106. Cr. 770-1 Cro. 7.0 2.4 6.9 3.2 7.0 1.9 L 2.5 3.5 N o.4 l16-18 36 41 1.14 96 1.5
107. Cr. 772-1 Cro. 6.6 3.2 5.3 3.3 7.5 1.8 L 2.5 3.0 m 1.1 14-16 39 38 0.97 94 2.0
108. Cr. 772-2 Cro. 6.5 2.9 5.0 2.9 7.9 1.8 M 3.0 2.0 M-B 1.7 12-14 16 16 1.00 97 2.5
109. Cr. 772-4 Cro. 5.9 2.9 5.1 3.0 6.6 1.7 L 1.5 1.0 M-B 1.3 10-12 37 41 1.10 93 3.5
110. Cr. 772-6 Cro. 5.7 2.2 3.9 3.2 7.0 1.9 L 1.5 2.0 M-B 1.0 12 33 41 1.24 93 3.0
111. White hybrid #11 A&C 5.9 2.6 4.1 3.2 7.8 1.8 L-M 2.0 3.0 M-B 0.9 12-14 37 37 1.00 93 2.0






-13-


Table 5. Spring 1958 Yellow Hybrid Sweet
on the farm of Evans & Rogers.
Harvested June 3, 1958.


Corn Commercial Trial. Grown
Planted March 20 and 21,


No. No. crates
rows Approx. harvested Approx.
Variety Seedsmen harvested average 5/doz/crate or/ac. Comments

Golden Security FEW 16 2.81 96 34.2 good stand,
very sev. bligh
Inferior ears
Sweet Sixteen Vaughn 16 2.81 419 19.1 good stand,
showed resist.
to blight. Ears
curved, ugly ti
lorigold F.M. 16 2.81 368 131.0 good stand,
showed resist.
to blight & hot
weather. Good
ear type.
85-1 Crookham 16 2.81 404 143.8 Good stand,
showed resist.
to blight & hot
weather. Eroell
ear type.
Rogers 16 2.81 367 130.6 Fair stand,
showed resist.
to blight & hot
weather. Good
ear type.
R-f1 Rogers 16 2.81 128 45.6 Poor stand,
showed some re-
sist. to blight.
Good ear type
Sixty pak Kilgore Not harvested for yield Very poor stand.
Showed some re-
sist. to blight.
Good ear type.


Table 6. Spring 1958. White hybrid sweet corn commercial trial. Grown on the
Farm of Mr. S. N. Knight. Planted March 8, 1958, harvested May 26, 1958.

No.
rows Approx. No. crates Approx&
Variety Seedsman harvested average harvested cr./ac. Comments

Silverliner Cor. 12 2.1 320 152.4 Fair-good ear
type, some dry-
back.
Hybrid 31 A&C 12 2.1 336 160.0 Good ear type.
Ears large.


EES 59-28
200 copies.