Agronomy Research -Rpport 82-6
Department of Agronomy
Agricultural Experiment Station, IFAS
University of Florida
Hybrid Field Corn Variety Tests Results From The Everglades
Agricultural Area, 1981.
C. G. Chambliss, A.R.E.C.-Bradenton
K. D. Shuler, Palm Beach County Extension
John L. Hundley, Palm Beach County Grower
E. S. Horner, Dept. of Agronomy, Gainesville
F. G. Martin, Statistics Dept., Gainesville
F. E. Boss, Palm Beach County Extension
R. J. Allen, A.R.E.C.-Belle Glade
The 1981 field corn variety test was planted in a commercial
field of corn on Pioneer Farm No. 2 (Hundley Farms) 13 miles east
of Belle Glade, Florida. The soil was a Terra Ceia muck with the
following soil test values at planting time: pH-6.0, P-23, and
K-231 (Belle Glade-A.R.E.C. soil test procedures). The fertility
level was higher than that currently recommended for field corn.
No fertilizer was applied to the corn. Several crops of radishes
had been grown on this particular field prior to the corn crop.
The variety test was planted on March 10, 1981. The experimental
design was a randomized complete block with four replications of 30
different varieties. Plots consisted of three 36-inch wide rows,
S 22 feet long, with data taken from one row. Plots were laid out in
such a manner that only 20 feet of row:was planted leaving a 2 foot
space between the ends of plots. In this report the entire 22 feet
was used as a basis for calculating yields.' In previous reports 21
feet was used as the basis for calculating yields, which would give
slightly higher yields. The above statement is given to explain
+ the discrepancy between the report presented at the field day and
this report. Ranking of varieties remains the same.
Pesticides used for weed and insect control were as follows:
In the drill to
control wire worms.
April 1 22 Atrazine 1.5 Ibs. Post emergence
April 22 44 Toxaphene and Lannate 1 pint each
Techmangam 0.5 lb.
April 30 52 Toxaphene and Lannate 1 pint each
May 11 63 Toxaphene and Lannate 1 pint each
Techmangam 0.5 lb.
May 13 65 Toxaphene and Lannate 1 pint each
May 16 68 Toxaphene and Lannate 1 pint each
May 19 71 Toxaphene and Lannate 1 pint each
May 22 74 Toxaphene and Lannate 1 pint each
May 25 77 Toxaphene and Lannate 1 pint each
The field was cultivated twice for weed control.
The corn was harvested on July 13 and 14. Grain yields in
bushels per acre, corrected to 15.5 percent moisture, are presented
in Table 1. Yields ranged from 145 to 202 bushels per acre. Data
for several other traits that may be of interest in selecting a
corn hybrid are also presented in Table 1. Lodging and barrenness
were measured, but since neither were significant,results are not
The commercial field in which the variety test was located
was planted at 24,000 plants per acre with a final stand of 23,500
plants. It was estimated to have yielded 190 bushels per acre.
Two adjacent fields averaged approximately 171 bushels per acre.
It is felt that the unusually high yields for the varieties in this trial
as well as the commercial field were due in part to the 1) high soil fertility
levels, 2) increase in solar radiation, and 3) decrease in rainfall which
resulted in less lodging and stalk rot and a greater release of soil nitrogen.
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SEED SOURCES FOR HYBRIDS USED IN THIS TEST
Company or Brand
Asgrow Florida Company
P.O. Drawer D, Plant City, FL 33566
Coker's Pedigreed Seed Company
P.O. Box 340, Hartsville, SC 29550
DeKalb Agricultural Research, Inc.
Route 2, Box 135, Leesburg, GA
Louisiana Seed Company, Inc.
P.O. Box 7498, Alexandria, LA 71306
Gold Kist Inc.
P.O. Box 705, Dublin, GA 31021
Columbiana Seed Company
Eldred, Illinois 62027
Jacques Seed Company
Prescott, WI 54021
McCurdy Seed Company
Fremont, IA 52561
Northrup King and Company
P.O. Box 889, Laurinburg, NC 28352
Pioneer Hi-bred Intl., Inc.
1000 West Jefferson St., Tipton, IN
Ring Around of Kentucky, Inc.
P.O. Box 7, Sebree, KY 42455
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The corn was grown by Mr. William McKinstry, Jr. and monitored
for insects and diseases by Glades Crop Care, Inc. Sprays were
applied by Glades Ag Service.