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Sweet corn (Zea mays, L., var. rugosa) variety and strain test.
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Permanent Link: http://ufdc.ufl.edu/UF00076906/00001
 Material Information
Title: Sweet corn (Zea mays, L., var. rugosa) variety and strain test.
Physical Description: Serial
Creation Date: 1948
 Subjects
Genre: serial   ( sobekcm )
 Record Information
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
System ID: UF00076906:00001

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Everglades Experiment Station

Belle Glade, Florida












Mimeographed Report No. 6


(Horticulture)











SWEET CORN (Za wj L., var. rugosa) VARIETr AND STRAIN TEST


April 1918





SWEET CORN VARIETY AMND HYBRID TEST
1948
James C. Hoffman

The test consists of, 20 seed stocks planted October 24, 1947, and Larrested as
recorded in column 2, Table 1. Each variety or hybrid was planted in a rdnrdomized
block layout with 5 repli6cations. Each replicate consists of 2 rows 20 feet in
length. The plots were located on well mature sawgrass peat with a pH of 5,60.

Seed stocks were treated with tetramethyl thiuramdisulfide generally designated
by the trade as Arasan. As a bird and rodent repellent, the seed were treated with
j pint of coal tar and 1 pound of calcium arsenate per bushel of seed. The seed were
first treated with Arasan, secondly with coal tar and finally dusted with calcium
arsenate. After each treatment, the seed and material were mixed well in a closed
container.

All rows were spaced 36 inches apart and the seed planted 12 inches apart in the
drill, 3 seed per hill. The seed were covered 2 inches in depth with a planet Jr.
hand plow. Seedlings were later thinned to 1 per hill.

Fertilizer was applied October 24 at the rate of 40D pounds of 0-8-24, 50 pounds
manganese sulphate, 25 pounds copper sulphate, 25 pounds zinc sulphate, and 10 pounds
borax per acre, in 2 bands 4 inches on each side of the seedbed and 3 inches in
depth.

The fall arworm, La m frugiperda, was controlled by 2 applications of 1l
quarts of 25 percent DDT emsion per 100 gallons of water with 6 ounces of spreader
and sticker added. The spray was applied at the rate of 125 gallons per acre. The
silks were dusted with 3 percent DDT in talc at 3-day intervals. A total of 4 dust-
ings were applied during the pollination period with a small hand-operated gun at
approximately 25 pounds per acre.

The corn grew unusually well considering the short day length during fall and
winter. Temperatures for the growing season averaged 70.20 P. for the period from
6o00 A. M. to 6s00 P. U., and 62.1o F. for the period from 6t00 P. M. to 600 A. M.
or a general average temperature of 66.20 F. The water table averaged approximately
24 inches during the growing season,
Data in Table 1 are presented as averages taken from 5 replications.
A description of each numbered column is outlined to clarify the data as pre-
sentedt

TABLE 1. (1) Seed Sources It Everglades Experiment Station
21 F. H. Woodruff and Sons
3: Burpee Seed Co.
4a Ferry-Morse Seed Co.
5$ Corneli Seed Co.
6: Associated Seed Growers
7t Max Schling Seedamen
(2) Average height of plant measured in inches from soil surface to tip of
tassel at time of harvest.
(3) Days from planting until edible maturity.
(4) Tightness of husk indicates the degree in which the husks are formed
about the ears, with number 1 indicated an extreme tight husk and
5 very loose.






- 2 -


* (5) Husk extension measured from tip cf ear to end of husks
(6) Any damage of a very minute na.t'r-e 1ras recorded if located )r )ie ear.
(7) Damage caused by Euxest-, .lgrna".aasa Lo'mi,,
(8) Average length of only marketable p.rticni.
(9) Average diameter at mid-point of ea- mwas'xed wrLth a vernier caliper,
(10) Average depth of kernel at mid-poinL. f enr mca'nare* d ,vi e* dr
caliper.
(11) Number of rows listed as a majority,
(12) Color of kernels It cream
2: white
3: yellow
(13) A plunger with a diameter of 1/16 of an inch was used. Fifty replica-
ted samples were taken and averaged for final record, which takes 31
grams difference between the averages of any 2 progeny to be considered
significant at the 5 percent point and l1 grams at the 1 percent point.
(i4) Uniformity was determined by measurements and inspection of a random
sample of 25 husked ears, a rating of 1 being extremely uniform and.
5 extremely irregular,
(15) Calculated from average yield of 5 replications, it takes 2,C09 ears
difference between the averages of any 2 progerny to be considered
significant at the 5 percent point and 2,756 ears at the 1 percent
point.
(16) Calculated same as (15), It takes 1,128 pounds difference between the
averages of any 2 progeny to be considered significant at the 5 percent
point and 1,496 pounds at the 1 percent point.

After stucring these data one can conclude that the yields are generally low,
h<. a, after considering the very short, cool days, low yields would be expected*

CIrnelits Gold Rush is the outstanding early variety. In considering date of
uttri-ty, all of those progeny would have been several days earlier had the temper-
tmure been higher and days longer.

Iama and Golden Cross Bantam are not considered outstanding progeny in this
*est. Illinois Golden #10 and Oto appear to be excellent second early progeny, where-
as, Experimental Hybrid, U. S. #34 and Stowell's Evergreen are outstanding late
progeny.

These conclusions would not necessarily be the same for late spring and summer
or early inter plantings,







CORN VARIETY AND HYBRID TEST, EVERGLADES EXPERIMENT STATION, BELLE GLADE, FLORIDA, 198.
4-* >m Cc v
0- S0@ 04.' J.N to,
A $4 0 0 EH K a a (e 0 .0 o
4- Z. -H4
0) s.~l o M 0 1c (C o. 20) e 0- OQ" S.. 0
Stock 0 r 0 r 0 o -(e tao ^c o 3r No. Variety or Hybrid SNtok Wo e 4, 0 t o H E |
a1 1 -W 0 O O W.Co 1oo
(1)0 (2)2 (0 (^ (5 (6)g E)6
4S a W-, ;(J0 (:03 -A= 0 0 a) 4 44 4Da, ., .4 04 S0 0* T o. to
03-c-0pO =%-"C %.O U, %.4 1w. WOrU E-4 rul
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11)(12) (13) (114) (15) (16)


1. Experimental Hybrid S-46-173 1 96.0
2. Ill. Golden #10 27633 2 78.0
3. Mammoth Golden 27640 2 I0.0O
4. Golden Cross Bantam 27693 2 60.0
5. loana 27623 2 60.0


6. Carmelcross 1378
7. loana 60652
8. Stowell's Evergreen 59779
9. Golden Cross Bantam 58302
10. K V F' #$45
U11. Oto 53708
12. Mason's Gold Midget -
13. Bantam Hybrid #57 W4457
14. Golden Hybrid #54 53692
15. Pawnee #50 53709
16. Erie 33709
17. loana C145.2
18. Ill. Golden #10
19. Corneli's Gold Rush -
20. U. S. #34 1


3 36.0
4 66.0
4 84.0
4 52.0
5 84.0
6 56.0
7 26.0
6 57.0
6 66.0
6 72.0

6 50.0
6 56.0
5 72.0
5 48.0
1 90.0


82 1 2.00
79 2 2.00
70 2 2.50
80 3 2.50
80 2 2.00
67 2 3.00
80 2 2.75
83 2, 2.00
80 3 2.75
82 3 1.75
79 2 2.25
63 3 2.00
82 2 1.25
80 3 2.00
79 2 3.00
79 2 1.75
81 2 1.75
79 2 2.75
67 3 3.50
93 1 2.50


4 0
8 8
24 20
24 4
20 4

32 24
0 32
0 20
4 12
214 16

4 0
24 20
0 0
0 0
8 12


7.26
6.68
6.05
6.31
6.45

5.70
6.39
6.58
6.12
6.94

6.63
3.60
8.03
7.72
6.88

7.47
6.07
6.44
5.53
6.74


1.64 0.33 12 1 449 4 12495 6964
1.86 0.41 12 1 445 2 10290 5678
1.49 0.29 12 1 338 2 4998 1819
1.70 0.35 12 3 388 2 6174 2205
1.55 0.31 12 1 448 2 3749 1544
1.63 0.34 12 1 443 2 6615 2573
1.76 0.45 12 1 433 2 3161 1635
1.84 0.36 16 2 433 2 10217 5696
1.66 0.39 12 3 368 2 5954 2628
1.68 0.36 12 1 411 1 5807 2793


1.51 0.38 10 1 416 4
1.16 0.29 8 1 354 2
1.48 0.35 12 1 414 1
1.61 0.31 12 1 1407 2
1.75 O.43 14 1 473 2


7718 3822
0 0
4190 2150
6762 3344
4925 2628


1.63 0.0o 12 3 437 2 5733 3050
1.59 0.34 12 1 420 4 4337 2297
1.74 0.39 12 1 434 3 6174 30O0
1.69 0.39 12 3 l19 1 8306 3399
1.68 0.38 12 1 388 3 12936 6633