Title: Popcorn research, Everglades area.
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 Material Information
Title: Popcorn research, Everglades area.
Physical Description: Serial
Publication Date: 1965
 Record Information
Bibliographic ID: UF00076901
Volume ID: VID00002
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 166141015

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Everglades Station Mimeo Report EES 69-16 May 1969


1965 Popcorn Resdeaft.
Everglades Area


Victor E. Green, Jr.


Two popcorn variety tests were conducted in 1965. These were on muck that
had been in cultivation for about 30 years and in corn for the past 25 years.
The tests were contiguous. Both tests contained established varieties along
with newer experimental. There were 8 varieties in each test, and all were
three-way crosses. Test 1 contained Purdue 213 and 7 Ames Seed Farms (ASF) 2/
hybrids while Test 2 had Purdue 410 and 7 other ASF hybrids. The pollen parent
of all ASF hybrids was either ASF line 66 or 88, both of which have been superior
in previous tests as regards yields and popping ability.

Plots consisted of one row of popcorn 20-feet long. All rows were bordered.
The randomized block design with six replications in each test was used. Ten-
foot alleys separated replications and experiments. The survival stand goal was
a plant every 4 inches on rows 3 feet apart, or 43,560 per acre. The tests were
planted on February 16, 1965. Germination was good, but final stands were so
poor that yield data were too erratic to be included in this report. Land pre-
paration consisted of a mid-December plowing, disking in late December, and
disking and levelling in early January. Mole drains were run from the south
ditch every 12 feet and 3-feet deep in mid-January. On January 21, 3-12-12
fertilizer was applied at 500 lbs./A. and contained 1% each of CuO, MnO, B203,
and ZnO, with 5 lbs./A. technical Aldrin for wireworm control. Pre-emergence
applications of CDAA and CDEC (Vegedex and Randox) were applied on February 19
under the supervision of Dr. J. R. Orsenigo, Weed Scientist at this Station.
Slight frost damage was experienced on February 27. Weed control was adequate
to harvest. Skips in the stand were replanted on March 8. On April 1, budworms
were controlled by a spraying of 2 qt. DDT 25% and h pt. 8E Toxaphene in 100
gallons of water per acre. The plots were cultivated lightly on March 29 and


/ Agronomist, IFAS, Everglades Experiment Station, University of Florida,
Belle Glade 33430. An assignment for three years as Agricultural Advisor
to the Government of Costa Rica on a contract between the USAID and the UF-
IFAS delayed the publishing of the results herein.

- Seed for the tests and the determination of the industrial characteristics
were courtesy of Mr. James R. Murray, Research and Sales, Ames Seed Farms,
Ames, Iowa.








- 2 -


April 2, and laid-by on April 5. The pollen mid-point was recorded for each
variety in each replication on the date it occurred. On May 26, each plot was
rated for resistance to northern leaf blight. On June 3, heights of the stalks
and of the ears were recorded. Mature ears were pulled on June 24 and 25 with
the husks remaining. These were bagged separately, dried and weighed. After
husking, the ears were re-weighed. All these data except yields are shown in
Tables 1 and 2 for Tests 1 and 2, respectively.

After drying, 2 ears were removed from each replication, bulked for variety,
and sent to the Ames Seed Farms for industrial data. These included test weight,
an ear quality score, and number of kernels per 10 grams of popcorn, along with
the weight volume test. The official volume test was calculated from a slightly
revised regression formula from all previous OVT:IVVT pairs. These data are
shown in Tables 3 and 4 for Tests 1 and 2, respectively.


RESULTS

It is seen from Tables 1 and 2 that all varieties in the tests were at the
midpoint of pollination between April 26 and May 8. Stalk heights varied from
5.7 to 6.8 feet and ear heights from 3.2 to 3.9 feet above the soil surface.
The hybrids most resistant to Helminthosporium turcicum leaf blight were ASF
A-332 and A-3131, both containing lines 66 and 88. The sellout and huskout
data do not reveal anything interesting.

While the bushel is seldom used in the popcorn industry, the test weight,
however recorded, shows which varieties or which samples tend to be the plumpest
or heaviest per unit volume. Actually weighed are the grams in a pint cup,
and these data would be as significant as extrapolating to a bushel, or 64
pints. Tables 3 and 4 show that these data varied from 64.5 to 67.5 pounds per
bushel, averaging 66.3 for 16 hybrids. All ear quality scores were acceptable,
being from 7.0 to 8.5 out of a possible 10.0. Nine is very good; 8 is good.
Only one variety scored 9 since 1960. In 1965, two varieties scored 8.5:
Purdue 213 and ASF A-373, the latter of which scored very high in test weight
and popping quality. In kernel size, the larger number of grains per 10 grams
of popcorn signifies smaller size, while the reverse denotes larger size. In
1965, the values varied from 87 for the small seeded P-213 to 64 for A-501 and 66
for A-315, A-332, and P-410. At Purdue, these values are converted to a kernel
size score based on a value of 5 for P-213 (small-kernel hybrid) and of 10 for
P-410 (large kernel hybrid). Conversion of the original values has the advantage
of reducing them to small numbers and of inversing them so that small kernel
hybrids have small kernel size scores and large kernel hybrids large scores,
concluded R. B. Ashman and James Reed of Purdue in the Res. Prog. Rep. 353 of
Feb. 1969 -- 1968 Hybrid Popcorn Performance Trials. Whereas it took 54 to 57
kernels of P-410 to weigh 10 gms. in 1964 and 1963, respectively, it required 66
kernels in 1965, signifying that P-410 kernels were lighter in 1965. Also,
while taking an average of 76 kernels in 1964 and in 1963 for 10 gms. of P-213,
87 were required in 1965, signifying that P-213 was lighter also in 1965.








- 3 -


Weight volume tests ('NT) showed a range of from 1020 to 1210 cubic inches
of popped corn per pound of raw popcorn. The corresponding official volume
test (OVT) values were calculated from a new regression formula containing the
1961 data, and represents a slight improvement over the formula previously used
(Proc. Soil and Crop Sci. Soc. Fla. 20:36. 1960). The OVT values were 37.5
and 42.6 volumes, respectively. Until 1954, no variety at Belle Glade popped
up to 37 volumes, but in 1965 no variety popped less than 37.








































EES69-16
400 copies








Table 1. The Agronomic Characteristics of 8 Popcorn Varieties Grown at Belle Glade, Florida in 1965.


Variety
Entry Name


Seed Parent
Female I Male


Pollen
Parent


4,
-4 ,H Cd

iC 0<
a ES S


Height, Ft.
Stalk Ear


I X

CA
*4 a0

-.4

-i bo'-4l


4-1
0
0>
ri


Huskout


1. Purdue 213 Sgl8 Sg1533 Ia28 5-3 6.7 4.3 3.6 82.1 90.0
2. ASF A-231 39 31-58 88 4-26 5.8 3.6 3.7 --- 84.8
3. ASF A-313 38L 66 88 5-4 6.5 4.1 3.2 82.9 89.1

4. ASF A-315 31 88 66 4-26 6.5 4.0 3.3 --- 89.5
5. ASF A-328 40 88 66 5-4 6.8 5.5 3.5 82.2 85.3

6. ASF A-332 43 88 66 5-6 6.5 4.0 2.7 79.6 87.5
7. ASF A-373 39D 88 66 5-8 6.5 4.0 3.3 --- 92.6
8. ASF A-410-S 39 31-58 4722-2AA 4-30 6.7 4.0 3.4 80.6 87.0

Table 2. The Agronomic Characteristics of 8 Popcorn Varieties grown at Belle Glade, Florida in 1965. Test 2.

1. Purdue 410 Sgl8 Sgl533 4722-2A 4-30 6.4 3.9 3.9 80.2 89.7

2. ASF A-441 38 31-58 66 4-30 6.2 3.8 3.9 81.9 88.0
3. ASF A-500 39 313 66 4-27 6.0 3.5 3.9 --- 81.8
4. ASF A-501 39 314 66 5-3 6.1 3.6 3.9 --- 88.9
5. ASF A-3128 66 G-67 88 4-27 5.7 3.2 3.6 82.0 86.2
6. ASF A-3131 66 G-78 88 4-28 6.2 3.2 2.9 82.4 85.9
7. ASF A-3138 66 G-89, 88 4-28 5.9 3.4 3.2 --- 82.6


8. ASF


A-3158


31-3


88


4-27


5.9


3.2


3.2 8S.0


85.0


Seed furnished by Ames Seed Farms, J. R. Murray, Research and Sales.
All 3-way crosses; Planted: Feb. 16, 1965; Harvested: June 24 and 25, 1965; Population goal: 43,560/Acre.

/ On an 11-point scale where 0 = immune and 5 = susceptible.


Test 1.








Table 3. The Industrial Characteristics of 8 Popcorn Varieties Grown at Belle Glade, Florida in 1965.


Entry


Variety
Name


Seed Parent
Female Male


Pollen
Parent


4.' -
tr
<03,0p
2 ~cQ -


W*H U
n o l>


0;
to
N 0
*-V
) S^.-


INT


OVT-


1. Purdue 213 Sgl8 Sgl533 Ia28 66.5 8.5 87 5 1060 37.2
2. ASF A-231 39 31-58 88 66.5 7.5 76 8- 1110 39.0

3. ASF A-313 38L 66 88 64.5 7.5 80 6+ 1190 41.8
4. ASF A-315 31 88 66 66.0 7.5 66 10 1130 40.7

5. ASF A-328 40 88 66 67.0 7.0 67 10 1210 42.6
6. ASF A-332 43 88 66 67.0 8.0 66 10 1170 41.1

7. ASF A-373 39D 88 66 67.5 8.5 68 9+ 1140 40.0
8. ASF A-410-S 39 31-58 4722-2AA 65.5 8.0 68 9+ 1040 36.4


Table 4. The Industrial Characteristics of 8 Popcorn Varieties Grown at Belle Glade, Florida in 1965. Test 2

1. Purdue 410 Sgl8 Sgl533 4722-2AA 66.5 8.0 66 10 1040 36.4

.2. ASF A-441 38 31-58 66 65.0 8.0 70 9 1080 37.9
3. ASF A-500 39 313 66 67.0 7.5 57 12+ 1070 37.5

.4. ASF A-501 39 314 66 66.5 7.5 64 10+ 1020 35.7

5. ASF A-3128 66 G-67 88 66.0 7.0 85 5 1160 40.8
6. ASF A-3131 66 G-78 88 66.5 8.0 70 9 1180 41.5

7. ASF A-3138 66 G-89 88 66.0 7.0 83 6 1170 41.1

8. ASF A-3158 40 31-3 88 66.5 7.0 82 6 1150 40.4

Seed furnished by Ames Seed Farms, J. R. Murray, Research and Sales.
/An ear quality score of 10 is perfect

-OVT is calculated from new revised regression formula: X = -1.00 + 0.036Y


Test 1




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