Title: Field corn research, Everglades area.
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 Material Information
Title: Field corn research, Everglades area.
Physical Description: Serial
Publisher: Everglades Experiment Station.
Publication Date: 1964
 Record Information
Bibliographic ID: UF00076900
Volume ID: VID00001
Source Institution: University of Florida
Holding Location: University of Florida
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Resource Identifier: oclc - 166140944

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Evilades Station Mimeo Report EES65-12 January 1965

\ 1964 Field Corn Research
S,.... Everglades Area
SVictor E. Green, Jr. and Emmett D. Harris, Jr.


''- afield corn variety tests were conducted during 1964, on old muck,
contiguous to each other. Test 1 consisted of old varieties previously test-
ed at this Station. Test 2 was a comparison of the Poey T-varieties in the
20-, 40-, and 60-series, along with Corneli 54, and Rocamex H-502. Test 3
was a white corn test of Poey and Rocamex varieties. There were six repli-
cations in each of the first three tests. Test 4 was a comparison of old and
new Funk varieties. There were two sets of 7 varieties in three replications,
with 6 of the last 3 varieties in the test. Three Poey varieties were entries
in the split portion of the test. Plots consisted of one row of corn 20 feet
long. All rows were bordered. Ten-foot alleys separated experiments. The
survival stand goal was 1 plant every foot, or 14,520 plants per acre. This
was attained by dropping seeds on February 12, 1964, every foot in the rows
three feet apart and thinning the stand to one plant per foot. The Funk test
was planted February 21.

On February 10, fertilizer was broadcast on the soil and disked in at
the rate of 640 pounds of 4-12-16 containing 1 unit each of CuO, MnO, B 0^,
and ZnO per acre. Diazinon at 6 pounds per acre was applied in the fertili-
zer to control wireworms. Cutworms were controlled with one spraying of 2
pints of 8E Toxaphene plus 2 pints of 1.6E Endrin per 100 gallons of water
per acre. Cucumber beetle was controlled by one spraying of 2 pounds of actual
DDT in 100 gallons of water per acre. Wireworm damage average 8 to 12%.

Tasselling midpoint was recorded for each variety in each test, along
with stalk height, ear height, and leaf blight index. Final stand counts
were made May 18, and lodging was recorded on July 1. The Funk Test was har-
vested June 23, and the remaining tests July 2, 1964. The ears were bagged
with the husks remaining, dried, and weighed. The ears were husked, and the
ears weighed. Yields were calculated on the bushel per acre basis at 15.5%
moisture basis, U.S. No. 2 Grade.

The yield data, along with the tasselling midpoint date, stalk height,
and ear height of the varieties are shown in Tables 1, 2, 3, and 4. Yields
did not exceed 91 bushels per acre in 1964. In Test 1, the highest yield
was 88 bushels per acre, by Rocamex H-503. In Test 2, Poey T-63 and Poey T-23
gave 91 bushels each, while Poey T-62A gave 84 and Poey T-66 yielded 80 bushels
per acre. In the white corn test, Rocamex H-504 and H-507 yielded 89 bushels,
Poey T-23A 83 bushels, and Poey T-46, Rocamex H-501 and H-503 yielded 82 bushels
per acre. In the Funk Test, no variety out-yielded Funk G-745, which gave 82
bushels per acre.



Associate Agronomist and Associate Entomologist, working under State Pro-
ject 1058.




-2-


Poey T-63 and T-65 proved to be as early as De Kalb 633 and 805, with
stalks as short, but much higher yielding. In Test 4, Funk G-76 tasselled
only 64 days after planting.

Table 5 shows agronomic data for the varieties that occurred in more
than one test, on the average.

Seed Sources

Poey Hybrids and Corneli 54

Yellow Corneli 54, Poey T-62, Poey T-66

White Poey T-23, Poey T-46

Experimental Poey T-23A, Poey T-46A, Poey T-62A, Poey T-63, Poey T-65

Sources: Hector Supply Company, Belle Glade, Florida; Alexandria Seed

Company, P. O. Box 1870, Alexandria, Louisiana; Cade Export

Company, Alexandria, Louisiana; Semillas Mejoradas de Mexico,

S. A., Liverpool 143, Mexico 6, D. F., Mexico.

Rocamex Hybrids

White-Rocamex H-501, 502, 50 50504, 505, 507.

Source: Oficina de Estudios Especiales, Secretaria de Agricultura y

Ganaderia Calle Londres 40, Mexico. (Cooperative with the

Fundacion Rockefeller, same address.)

Funk G-Hybrids

White varieties have -W suffix.

Sources: Kilgore Seed Company, Belle Glade, Florida; Louisiana Seed Company,

Alexandria, Louisiana or Box 2586, Montgomery, Alabama.

DeKalb Hybrids

Yellow DeKalb 633, DeKaib 805

Bource: DeKalb Agricultural Association, Maitland, Florida

Embro Hybrids

Yellow- Embro 256CP, Embro Flint 1, DEbro Flint 2

Source: Ed. F. Mangelsdorf & Bros., Inc., P. 0. Box 327, Saint Louis, Mo.
Mayorbela O.P. Yellow Synthetic. Source: Puerto Rico Agricultural Experiment
Station, Rio Piedras, P. R.









Table 1. Agronomic characteristics of 10 Field Corn Varieties and Hybrids, Belle Glade, Florida. 1964.


Coded Parentage Silking Leaf
Variety Silk aren't Pollen Parent Midpoint Height, Feet Blight Yields, Bu/A.
Entry name F M F M Mo-Day Stalk Ear Index U.S. No. 2


1 Rocamex H-501*
2 Rocamex H-503*
3 DeKalb 633
4 DeKalb 805
5 Mayorbela O.P.
6 Big Joe Syn.
7 Embro 256 CP
8 Embro Flint 2
9 Embro Flint 1
10 porneli. 54**
* Occurs also Ln 41ite


T
TC

Close


T

i 3Pec
I Pec


Isalella BE


M
S ImpX
M4
A4
orn Test.
Corn Test.


oved

M1
C


T T
T3 T 4
6 7
igree
Ligree
.lked S-5 0P
WTO+CF+Y'
.bro K-257
D B
F76-1x T76-3
D B


Planted 2/12/64; h,


5/7
5/4
4/20
4/22
4/28
4/29
5/5
4/28
4/30
5/3
rvested 7/2/64,


8.5
8.5
8.0
8.0
9.0
8.0
8.5
9.0
9.0
8.5


6.5
6.0
3.5
3.5
5.5
5.0
5.0
5.5
4.5
5.0


1.5
2.0
2.5
3.0
2.0
1.5
3.5
2.0
1.5
1.0


** Occurs also in Test 2.

Table 2. Agronomic characteristics of 7 Poey T-hybrids, 2 generations of Corneli 54 and second generation
Rocamex H-501.. Belle Glade, Florida. 1964. Test 2.


1 Corneli.54**
2 Poey T-62*"
3 Poey T-63
4 Poey T-65
5 Poey T-66*I
6 Corneli 54-F
7 Poey T-62A
8 Poey T-23*!*
9 Poey T-46!!
10 Rocamex 501-F2
** Occurs also in Test


A
A
0
A
A
A
C1
I
G
T1


o ed Ped
J
F
T2
Occurs ii


I! Occurs also in WIhite Corn Test.
Planted 2/12/64; harvested 7/2/64.


D
P
S
3
P
D
.gree
G
J
T3
n Funk


F
K
T
Test I-III.


5/2
5/3
4/22
4/2]
5/3
4/26
4/2
5/4
4/2C
5/3
*t *


9.5
9.0
8.0
L 7.5
9.5
9.0
9 9.5
10.0
9 9.5
10.0
Occurs also


White Corn Test.


5.0
5.0
4.0
3.5
7.0
4.0
5.0
7.0
5.5
6.5
Funk


1.5
0.5
2.5
2.5
1.0
1.5
1.0
0.5
1.0
1.5
Test I-III and in


Test 1.










Table 3. Agronomic characteristics of 6 Rocamex Hybrids and
Test 3. tIiite Corn.


4 Poey Hybrids. Belle Glade, Florida. 1964.


Coded Parentage Silking Leaf
Variety Silk Parent Pollen Parent Midpoint Height, Feet Blight Yields, Bu/A.
Entry name F F M F M Mo-Day .Stalk Ear, Index U.S. No. 2


Rocamex H-501*
Rocamex H-503*
Rocamex H-502
., Ro.cae.x H-5.Q5...
Rocamex H-505
Rocamex H-507
Poey T-23A'
Poey T-23*.1*
Pbey T-46l1.
Poey T-46A.


* Occurs also in Test 1.


T
T2
T
..H-503


T2 T3
T2 T3 T
Closed Ped gree
I J G
G F J
Close. Fed gree
I I


T4
T7
T5
T
lo -
T10
T12

F.
K


-5/10
5/8
5/4
.5/5..
5/7
5/7
5/3
5/4
4/30
.5/1


9.0
9.5
10.0
o, ,..
9.5
9.0
9.5
8.5
8.5
7.5


6.5
7.0
8.5
7.0
7.0
6.0
6.0
5.5
5.5
4.0


-~~ -,


1.5
1.5
2.0
1.5
1.5
1.0
0.5
0.5
0.5
0.5


*!* Occurs also in Test 2 and in Funk Test I-III. I! Occurs also in Test 2.


Planted 2/12/64; harvested 7/2/64.


1
2
3


5
6
7
8
9
10


L








Table 4. Agronomic characteristics of 14 Funk Hybrids and 3 Poey Hybrids. Belle Glade, Florida.


Coded Percentage Helminth Yields
Variety Silk Parent Pollen Parent Midpoint Height, Ft. Ratings Bu,/A.
Entry Name F M F M Tasselling Stalk Ear 5/26/64 U. S. No. 2
1. Poey T-66 *: A S P 0 5-21 8.5 5.0 1.0 69
2. Poey T-62 *. A R P T 5-22 9.0 5.5 1.0 56
3. Poey T-23 *'* I J G F 5-18 8.5 4.5 1.5 62
4. Funk G-81 23 24 25 26 4-27 6.5 3.0 5.0 39
5. Funk G-741 9 10 11 12 5-4 8.0 4.0 2.0 60
6. Funk G-745A 1 2 7 8 5-7 8.0 5.5 2.0 66
7. Funk G-795W-1 28 29 32 31 5-1 8.0 5.0 2.5 76
8. Funk G-745 xx 1 2 5 6 5-3 8.5 4.5 2.5 82
9. Funk G-580W xx 28 29 30 31 4-29 7.5 4.0 2.5 63
10. --Funk G-795W xx 28 29 32 33 5-2 8.0 4.0 4.0 52
1. Funk G-76 23 27 22 24 4-25 7.0 3.5 5.0 47
2. Funk G-144 21 16 22 17 4-29 7.5 3.5 4.0 36
3. Funk G-707 16 17 18 12 4-28 8.0 3.5 3.0 52
4. Funk G-711AA 13 1 14 15 5-5 8.0 4.5 2.5 78
5. Funk G-4703 19 20 4-27 8.0 4.0 2.0 75
6. Funk G-732 13 1 10 7 5-4 8.0 4.0 2.5 70
7. Funk G-740 1 2 3 4 5-4 8.0 5.0 3.5 60
8. Funk G-745 2x: 1 2 5 6 5-3 8.5 4.5 3.0 65
9. Funk G-580W xx 28 29 30 31 5-2 9.5 5.0 3.5 63
10. Funk G-795W xx 28 29 32 33 5-3 8.0 5.0 4.5 54

* Occurs also in Test 2.
*:* Occurs also in Test 2 and white corn test.
xx Occurs in all 6 replications of entries 8, 9, and 10.
Planted 2/21/64, except for Poey T-66, 62, and 23 planted 3/9/64.
Harvested 6/23/64, except for Poey T-66, 62 and 23 harvested 7/15/64.


1964. Test 4.







Table 5. The agronomic characteristic of tropical field corn hybrids occurring in
more than one test at Belle flade, Florida in 1964.


Name 1

Rocamex H-501 1
Rocamex H-501
Average H-501
Rocamex H-503 2
Rocamex H-503
Average H-503
Corneli 54 10
Corneli 54
Average C-54
Poey T-62
Poey T-62
Average T-62
Poey T-66
Poey T-66
Average T-66
Poey T-23
Poey T-23
Poey T-23
Average T-23
Poey T-46
Poey T-46
Average T-46
Funk G-745
Funk G-745
Average G-745
Funk G-580W
Funk G-580W
Average G-580M
Funk G-795W
Funk G-795W
Average G-7951


Leaf Yiel<
Entry in Test Height, ft. Pollen Stando Blight bu/A
2 White(3) Funl Stalk ear midpoint Attained Index U.S.
No.2


'
.
i






2


1


8
8,

91
91

161
10


'8.5 '
9.0
8.8
8.5
9.5 -
9.0
8.5
9.5
9.0
9.0
9.0
9.0
9.5
8.5
9.0
10.0
8.5
8.5
9.0
9.5
8.5
9.0
8.5
8.5
8.5
7.5
9.5
8.5
8.0 '
8.0
8.0


6.5
6.5
6.5
6.0
7.0
6.5
5.0
5.0
5.0
5.0
5.5
5.3
7.0
5.0
6.0
7.0
5.5
4.5
5.7
5.5
5.5
5.5
4.5
4.5
4.5 '
4.0
5.0
4.5
4.0:
5.0
4.5


5-7
5-10
5-9
5-4
5-8
5-6
5-3
5-2
5-3
5-3

5-3
5-3

5-3
5-4
5-4

5-4
4-29
4-30
4-30
5-3
5-3
5-3
4-29
5-2:
5-1
5-2
5-3
5-3


129
98
114
133
84
109
!86
105
96
131
109
120
132
95
113
64
60
54
59
147
70
108
121
125
123
116
125
121
124
117
121


1.5
1.5
1.5
2.0
1.5
1.8
1.0
1.5
1.3
0.5
1.0
0.8
1.0
1.0
1.0
0.5
0.5
1.5
0.8
1.0
0.5
0.8
2.5
3.0
2.8
2.5
3.5
3.0
4.0
4.5
4.3


I I L I I I I



















BIG JOF SYN.-----------o

FUNK G-70 ---------------
CORNELI 5l ------ ------


8 RCCAMEX H-503


ROC X H-1 ------------
MAYORBELA ---------


6 POEY T-23


5 ROCAMEX H-502 --------


POEY T-66--
POEY T-46 -
EMBRO FLINT 2
POEY T-62 --
FUNK G-745--
EMBRO 256 CP

POEY T-63 -
RCCAI1JEX H-507
POEY T-65 -
ROCAFX H-0S4
ROCAMVREX H-505


POEY
POEY
POEY


- - - - -- - - -- - - - - - - - - - -

----------------~,-----,-----~---------
---------------------------------0


-.------------------------o
I---.---U- -- o----
.. i . i ,,i- 0i


~---------c---- ~ --- -------o
--------------------- --- ----~--------------6
----------_--------------------o
--- --- ----------------I------


T-62A
T-23A
T-46A


AVERAGE YIELDS, BUSHELS PER ACRE SH'LLTD CORN


Figure 1.


Average Yields of Field Corn Varieties Planted at Belle Glade,
Florida in February for the Indicated Number of Years. 1952-
1964, inclusive. U.S. No. 2 Shelled Corn @ 15.5 % moisture.


EES65-12
450 copies


100
X


110
X


110


120


x x.


--''D'~"--0
I-------~----n


--- ------ -------------- ---o


--~----I,--, ,--~--










Entomological Investigations
Observations to determine average length, ear diameter, and degrees of ear-
worm (Heliothis zea (Boddie)) and/or Laphygma frugiperda (J. E. Smith)) damage and
weevil damage among the varieties were made from October 28 to November 2, 1964,
following open storage after harvest. Most weevil damage was caused by the rice
weevil (Sitophilus oryzae (Linnaeus)). To obtain the average width of ears from
each plot, five representative ears were laid side by side and the total span mea-
sured to the nearest 0.5 centimeter; the resulting value was then divided by 5 to
get a per ear average. The length of each of the five ears was measured to the
nearest 0.5 inch.

All available ears from each plot up to a maximum of 25 ears per plot were
each assigned an index number (0-5) to indicate the degree of injury by earworms.
An average plot index was computed and multiplied by 100. The highest possible
index, 500, would indicate the greatest assignable degree of earworm damage. The
following indexing system was used.

Index Fraction of Length of Ear Damaged
0 No damage
1 One-eighth or less
2 One-eighth to one-fourth
3 One-fourth to three-eighths
4 Three-eighths to one-half
5 One-half or greater

To evaluate the damage by weevils, 100 kernels were taken randomly from
each plot after the corn was shelled to count the number damaged.

In Tests 1, 2, 3 and the top half of Test 4, the data on earworm and weevil
damage were subjected to orthogonal comparisons to compare varieties in respect
to source and geneology. The hybrids in the bottom half of Test 4 did not lend
themselves to such an analysis because they were all from one source and their
parentage was very miscellaneous. The data from the bottom half of Test 4 were
subjected to the Student-Newman-Keuls' Test at the five percent level of probability

Test 1. The results of this test are shown in Tables 6 and 7. Big Joe,
a synthetic variety; received highly significantly less weevil damage than the
average damage to Mayorbela, an open-pollinated variety, and the hybrids in the
test. Both earworm and weevil damage to Corneli 54 was highly significantly less
than the average damage to the other hybrids. Earworm damage to the Rocamex
varieties was highly significantly less than the mean damage am3 g- the DeKalb
and Enbro hybrids. Both earworm and weevil damage were highly significantly less
among.the Embro hybrids.

Test 2. Results are shown in Tables 8 and 9. Rocamex H-501-F- received highly
significantly less weevil damage than the mean damage among the other hybrids in the
test. Weevil damage to Poey T-66 was significantly less than that to Poey T-65,
parent "0" seeming to cause a higher degree of weevil resistance than parent "R".
Poey T-62 received highly significantly less earworm damage than the mean damage
to T-65 and T-66, implying that in these three hybrids parent "T" imparted a higher
degree of resistance than parent "S" or "O".










Test 3. Results are shown in Tables 10 and 11. The Rocamex varieties re-
ceived -highly significantly less earworm and weevil damage than the Poey varieties.
Poey T-23 received highly significantly less weevil damage than Poey T-46, implying
that parent I imparted more resistance than parent K. However, in Test 2 the
amounts of weevil-damage suffered by T-23 and T-46 were nearly equal. Also in
test 3, Rocamex H-507 received highly significantly less weevil damage than H-505,
implying that weevil resistance imparted by T I and T,2 parents was greater than
that imparted by T. ; of course, this might also imply that a four-way cross is
more resistant that a -than a three-way cross. The average amount of earworm damage
suffered by Rocamex H-505 and H-507 was significantly greater than the average da-
mage to the other Rocamex hybrids.

Test 4, Top Half. The results are shown in Tables 12 and 13. The Poey hybrids
received highly significantly less earworm damage than the Funk varieties. The
average earworm damage to Poey T-66 and T-62 was highly significantly less than .
that to Poey T-23. Funk G-741 received highly significantly less earworm damage
than Funk G-81. The varieties did not differ significantly in respect to the amount
of weevil damage.

Test 4, Bottom Half. The results are shown in Table 14. Each Funk hybrid
except Funk G-76 received significantly less earworm damage than Funk G-144. The
Funk hybrids did not differ significantly in respect to the amount of weevil damage.








-10-


Table 6. Average ear diameter,
damage among 10 Field
1964. Test 1.


ear length, earworm damage, and percent weevil
Corn Varieties and Hybrids, Belle Glade, Florida.


Ear Ear Earworm % Weevil
Diameter Length Damage Damaged
Variety (cm) (in) Index Kernels

1. Rocamex H-501 5.0 7.0 226 83
2. Rocamex H-503 4.8 7.1 221 75
3. DeKalb 633 4.5 6.6 288 89
4. DeKalb 805 4.7 6.7 281 92
5. Mayorbela O.P 4.5 7.4 242 82
6. Big Joe 4.6 6.6 248 69
7. Embro 256 CP 4.5 6.1 257 76
8. Embro Flint 2 4.9 6.8 239 81
9. Embro Flint 1 4.8 6.3 244 73
10. Corneli 54 4.9 7.4 218 71


Table 7. Detailed analysis of variance for earworm score and percent weevil da-
maged kernels among 10 Field Corn Varieties and Hybrids, Belle Glade,
Florida. 1964. Test 1.

EARWORM DAMAGE WEEVIL-DAMAGE
Respec- Respec-
tive Mean tive % Mean
Source of Variation d.f. Scores Squares Kernels Squares


Blocks 5
Varieties 9
Big Joe (Synthetic)vs. all others 1
Mayorbela (Open Pollinated)vs.hybrids -1
Corneli 54 vs. other Hybrids 1
Rocamex H-501 vs. H-503 1
DeKalb 633 vs. 805 1
Embro 256 CP vs. Both Embro Flints 1
Embro Flint 2 vs. Flint 1 1
Rocamexes vs. DeKalbs & Embros 1
DeKalbs vs. Embros 1
Error 45


248-246
242-247
218-251
226-221
288-281
257-241
239-244
223-262
284-247


3098.36**
3324.93**
17.07
102.08
5651.44**
60.75
154.08
992.25
8o.068
12606.19**
10260. 45**
573.60


69-80
82-80
71381
83-75
89-92
76 77
81-73
79-82
90-77


194.52*
343.47**
693.60**
31.69
542.65**
192.00
18.75
7.11
176.33
78.87
1350.27**
59.68








-11-

Table 8. Average ear diameter, ear length, earworm damage, and percent weevil
damage among 7 Poey T-hybrids, 2 generations of Corneli 54 and second
generation Rocamex H-501. Belle Glade, Florida. 1964. Test 2.

Ear Ear Earworm % Weevil
Diameter Length Damage Damaged
Variety (cm) (in) Index Kernels

Corneli 54 5.1 7.3 266 72
Poey T-62 4.8 7.4 210 57
Poey T-63 5.0 7.1 249 71
Poey T-65 5.0 7.4 262 75
Poey T-66 5.3 7.4 259 57
Cornelt 54-F2 4.9 7.2 253 58
Poey T-62A 4.8 7.2 233 58
Poey T-23 4.9 7.4 233 73
Poey T-46 4.8 7.5 255 70
Rocamex 501-F2 5.0 6.7 -245 50


Table 9. Detailed analysis of variance for earworm damage and percent weevil
damaged kernels among 7 Poey T-hybrids, 2 generations of Corneli 54
and second generation Rocamex H-901.- Belle Glade, Florida. 1964.
Test 2.

EARWORM DAMAGE WEEVIt DAMAGE
Respec-. Respec-
Source of Variation d.f. tive Mean tive % Mean
Scores Squares Ker Squares


Blocks
Varieties
Rocamex
Corneli


H-501-F2 vs. All Others
54 & 54-F2 vs.Remaining


Hybrids 1
Cornelt 54: FI vs. F2 1
Poey T-65 vs. -Poey T-66 (R vs. 0)a, 1
Poey T-23 vs. Poey T-46 (I vs K)2 1
Poeys T-62 T-65. T-66 vs T-63
T-23 T-46 1
Poey T-63 vi Poey T-23 & T-46 a/ 1
Poey T-62 vs T-65 &'T-66 (T vs S&0)1
Poey T-62A vs All Other Poeys 1
ror 45


1165.40
1773.33*
245-247 17.79

260-243 261i.86
254-266 481.33
263-259 33.33
233-255 1452.00


244-246
249-245
210-261
233-245


40.11
87. 1
10472.11**
761.29
721.26


178.84
472.60**
50-66 1388.81**


65-66
58-72
75-57
73-70

63-71
71-71
57-66
58-67


7.64
588.00
901.33*
21.33

608.44
o
300.44
437.40
155.20


a/
- Parentage comparisons.


Er









-12-


Table 10.


Variety

Rocamex H-501
Rocamex H-503
Rocamex H-502
Rocamex H-504
Rocamex H-505
Rocamex H-507
Poey T-23A
Poey T-23
Poey T-46
Poey T-46A


Average ear diameter, ear length, earworm damage, and percent weevil
damage among 6 Rocamex Hybrids and 4 Poey Hybrids. Belle Glade,
Florida. 1964. Test 3. White Corn.


Ear
Diameter
(cm.)


5.1
4.9
4.9
4.9
5.1
5.2
5.0
4.9
4.9
4.9


Ear
Length
(in.)


7.2
7.4
6.7
7.7
7.3
7.1
7.8
7.0
7.8
7.7


Earworm
Damage
Index


% Weevil
Damaged
Kernels


212
205
226
220
234
228
231
248
246
242


Table 11. Detailed analysis of variance for earworm damage and percent weevil
damaged kernels amcng-6 Rocamex Hybrids and 4 Poey Hybrids. Belle
Glade; Florida. 1964. Test 3. White Corn.


EARWORM DAMAGE WEEVIL-DAMAGE
Respec- Respec-
tive Mean tive % Mean
Source of Variation d.f. Scores Squares Kernels Squares


Blocks
Varieties
Poeys vs. Rocamexes -
Poey T-23A vs. Poey T-46A
Poey T-23 vs. T-46 (I vs -K)/
PD _}m o m T). If


oejy c-3 C
Rocamex H-501
Rocamex H-503

Rocamex H-505

Rocamex H-501
Rocamex H-505

Error


-.-U A VS. T-2J l'f T- /
vs. H-502 (TL vs. T5)a
vs. H-504 (adding T &
T )/
vs. H-507 (T10 vs. &

& H-502 vs. H-503 & H-504
& H-507 vs. Other
Rocamexes


242-221
231-242
248-246
236--247
212-226


1659.19**
1185.38**
6100.90**
374.08
14.08
640.67
588.00


1 205-220 736.33


234.228
220-213


120.33
294.00


1 231-216 1800.00*
369.96


58-48
55-60
47-69
57-58
45-48

44-51

61-39
47-48

50-47


294.63
503.05**
1330.0 8**
96.33
1452.00**
4.17
27.00

140.08

1408.33**
7.04

62.35
168.07


Parentage comparisons.


I_


b










Average ear diameter, ear length,
damage among 7 Funk Hybrids and 3
1964. Top half of Test 4.


earworm damage, and percent
Poey Hybrids. Belle Glade,


Ear Ear Earworm % Weevil
Diameter Length Damage Damaged
Variety (cm.) (in.) Index Kernels

Poey T-66 5.2 7.5 201 65
Poey T-62 4.7 7.5 171 51
Poey T-23 4.2 6.6 249 59
Funk G-81 4.2 6.3 314 73
Funk G-741 4.7 6.6 246 69
Funk G-745A- 4.4 6.3 273 58
Funk G-795W-1 4.8 7.0 275 60
Funk G-745 4.8 6.9 261 53
Funk G-580W 4.7 6.4 275 79
Funk G-795W 4.6 6.6 282 71



Table 13. Detailed analysis of variance for earworm damage and percent weevil
damaged kernels among 7 Funk Hybrids and 3 Poey Hybrids. Belle Glade,
Florida. 1964. Top half of Test 4.

EARWORM DAMAGE WEEVIL DAMAGE
Respec- Respec-
tive Mean tive % Mean
Source of Variation d.f. Scores Squares Kernels Square

Blocks 2 2338.54* 133.20
Varieties 9 5130.30** 249.5C
Poeys vs. Funks- 1 207-245 29199.24** 58-66 400.01
Poey T-23 vs. T-66 & T-62 1 249-186 7896.06** 59-58 0.8c
Poey T-66 vs. T-62 (S & 0 vs. R & T)a 1 201-171 1380.17 65-51 322.67
Funk G-795W-1 vs. -Funk G-580W & G-795W 1 275-279 26.89 60=75 430.22
Funk G-580W vs. G-795W (30 & 31 vs 32 &-a3)1 275-282 66.67 79=71 96.00
Funk G-745A vs. G-745 (7 & 8 vs. 5 & 6)/ 1 273-261 -216.00 58-53 32.67
Funk G-745A & G-745 vs. G-795W-1, G-580W
& G-795W 1 267-277 392.71 56=70 716.84
Funk G-81 vs. G-741 1 314-246 6800.67** 73-69 24.00
Funk G-81 & G-741 vs. Other Funks 1 280-273 194.30 71-64 222.17
Error 18 552.76 209.94


aj Parentage comparisons.


Table 12.


-13-


weevil
Florida.












-14-


Average ear diameter, ear length, earworm damage, and
damage among 10 Funk Hybrids. Belle Glade. Flord a.
half of Test 4.


percent weevil
1964. Bottom


Ear Ear Earworm % Weevil
Diameter Length Damage Damaged
Variety (cm) (in.) Index Kernels


Funk
Funk
Funk]
Funk
Funk
Funk
Funk
Funk
Funk
Funk


G-76
G-144
G-707
G-711AA
G-4703
G-732
G-740
r--745
G-580W
G-795W


4.5
4.3
4.5
4.9
4.6
4.5
4.5
4.6
4.8
4.5


6.6
6.4
6.4
6.8
7.5
6.9
6.4
6.6
6.5
6.8


308
339
287
272
258
271
264
271
253
279


a, b. Within columns, means with the same letter are not significantly different
from each other- numbers without the same letter are significantly differer
Student Newman Keuls' Test.



















EES65-12
450 copies


Table 14.




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