Group Title: NFREC Research report - University of Florida North Florida Research and Education Center ; NF-97-12
Title: Florida corn performance trials for 1997
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Permanent Link: http://ufdc.ufl.edu/UF00074363/00001
 Material Information
Title: Florida corn performance trials for 1997
Series Title: NFREC Research report
Physical Description: 5 leaves : ; 28 cm.
Language: English
Creator: Stanley, Robert L ( Robert Lee ), 1940-
North Florida Research and Education Center (Quincy, Fla.)
Publisher: North Florida Research and Education Center
Place of Publication: Quincy FL
Publication Date: 1997
 Subjects
Subject: Corn -- Yields -- Florida   ( lcsh )
Corn -- Varieties -- Florida   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
non-fiction   ( marcgt )
 Notes
Statement of Responsibility: R.L. Stanley ... et al..
General Note: Caption title.
Funding: Research report (North Florida Research and Education Center (Quincy, Fla.)) ;
 Record Information
Bibliographic ID: UF00074363
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 84852330

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Marston Science
F{-- Library
q /b rary NFREC Research Report NF-97-12
JAN 26 1998

Piebar t P -ance Trials for 1997
R.L. Stanley, J.J. Moreno, P. Mislevy, and F.G. Martin'


This research report presents results of the 1997 corn production trials in Florida. These trials
are conducted by the IFAS Research and Education Centers to aid producers in selecting varieties
to grow. Trials were conducted at the North Florida Research and Education Center, Quincy, Florida,
and at the Range Cattle Research and Education Center, Ona, Florida.
The NFREC test site was turned with a moldboard plow in late February. Immediately prior
to planting 1000 lb/A of 5-10-15 (N-P:O,-KO2) and Sutan-Aatrex at 3-1 (lb/A a.i.) were
incorporated. Following planting Counter 15G was banded over the row at 15 lb/A. Additional
nutrients were applied in 2 applications to give a total of 300-200-300 lb/A N-POs-KO2. Plots were
machine planted at about 1.5X the desired population on 3-26-97 and hand thinned after emergence
to a final population of 30,000/A. Soil type was Norfolk loamy fine sand. Overhead sprinklers were
used as needed to maintain optimum soil moisture conditions for corn production. Corn was
harvested on 8-20-97 with grain yields reported at 15.5% moisture.

For the Range Cattle REC site, fertilization practices were 800 lb/acre of 0-10-20 (N-P20s-
KO) plus 4 lb/acre elemental Mn, Zn, Cu, and Fe (sulfate form) and 8 lb/acre elemental S prior to
seeding. Nitrogen was pre-emergence applied at 50 lb/acre, and an additional 100 Ib/acre when corn
was 6 and again at 18 inches tall, respectively, for a total of 250 lb N/acre. Soil pH was 5.8, with
adequate amounts of Ca and Mg. Corn was seeded in rows 30 inches apart and thinned to a final
population of 28,000 plants per acre. Herbicide used was 2.0 lb/acre Atrazine (active) pre-emergence
in 30 gal water/acre. To control soil-borne insects, the insecticide "Counter" 15 G 17 lb (active)/acre
was applied in 7 inch bands at seeding. A total of 9.4 inches of water was applied in 11 applications
using over-head irrigation sprinklers. Corn plants were harvested for DM yield when kernels of most
varieties were at hard dent stage. This was coincidental with black layer formation at the base of
kernels in most varieties. Other variables recorded for the experiment were oven dry grain yield,
forage DM(yield and percentage), kernel moisture, shelling percentage, and grain-to-stover ratio
(DM basis). Grain yield values were converted and expressed in bushels of shelled corn/acre at 15.5%
moisture.
Table 1 shows performance of temperate hybrids at the NFREC test site. Results for 1997
should be used with caution as the test was damaged by a mix of Dual-Gramaxone at about 12 to 14
inches height. For this reason 2- year average production for 96-97 and for 95-96 are included. The
3- year average includes the 1997 yields which are lower in all cases than for the other years.
Tables 2 and 3 show results from the Range Cattle REC. Parameters measured help in
determining the silage potential of the hybrids, as well as the grain production.


'Associate Professor, North Florida Research and Education Center, Quincy, Florida, Biological
Scientist, and Professor, Range Cattle Research and Education Center, Ona, Florida and Professor,
Dept. of Statistics, Gainesville.








Since many soils in North and Northwest Florida are similar to soils in South Georgia, producers
could benefit by reviewing results from tests conducted in the coastal plains locations of Georgia.
This information is available at web site www.griffin.peachnet.edu/swvt.










Table 1. Performance of temperate corn hybrids at NFREC Quincy, Florida.
Grain Yield'

Company or 2-yr. Avg. 2-yr Avg. 3-yr Avg.
Brand Name Variety 1997" 96-97 95-96 95-97


AgraTech
FL Exp2
Poineer
Northrup
Cargill
Greenwood
Fl Exp2
Pioneer
DeKalb
Northrup
Pioneer
DeKalb
Greenwood
Pioneer
Pioneer
Pioneer
Northrup
Agra Tech
Pioneer
Agra Tech
Pioneer
DeKalb
Cargill
Agripro
Fl Exp'V
DeKalb
AgriPro
Northrup
Northrup
CarQill


ATX 770
Fla Stop
3085
N 7931
X9513
835
Howard III
3223
DK 683
NK 508
3163
DK 687
7401
3098
3245
3146
N8811
ATX 888
3167
ATX 1177
3154
DK 714
8328
AP 9707
Howard II
DK 706
HS 9843
N8655
N 7639
8527A


"Bu/A@ 15.5% moisture
2FI Exp = Florida Experimental
3'Planted: 3-26-97
Population: 30,000 plants/A in the 36-inch rows
Soil Type: Norfolk loamy fine sand
Fertilizer: 300-200-300 lb/A N-P,0,-K20
Irrigation: Optimum
Harvested: 8-20-97
Severe injury from Dual-Gramoxone.


170





180
176
133
163


140
139
133
133
133
133
130
129
125
124
124
123
122
122
122
121
120
119
118
117
115
108
108
108
107
106
105
100
99
89


154
155
152

127
156
144
133
158
145


157
157
144
137
135

139
143


115
141


158





163
159
130
150



165
160
160
147
138


148








Table 2. Forage and grain yields and other agronomic variables of commercial corn varieties grown at the Range Cattle Research and Education
Center, Ona, 1997.

Company or Forage dry matter Grain Kernel Shelling Grain to
brand Variety yield' moisture percentaget stover ratio
Yield At harvest

t/A % bu/A % %

Cargill X 9513 10.5 a* 35.0 b-e 167.1 a 43.6 a 80.5 h 42-58 d-e
Northrup King McNair 508 10.1 a 32.0 e 156.6 a 43.4 a 80.2 h 40-60 e
Dekalb DK 683 9.8 a 37.2 a-e 154.7 a 39.3 d-g 85.1 c-f 42-58 d-e
Agra Tech 1177 9.8 a 33.1 d-c 146.2 a 43.9 a 79.8 h 40-60 c
Pioneer 3085 9.5 a 32.9 d-c 153.1 a 42.5 a-b 84.6 e-f 43-57 c-e
Dekalb DK 687 8.8 a 36.5 a-c 151.4 a 40.0 b-e 86.4 a-c 47-53 a-c
Dekalb DK 714 8.7 a 32.7 e 168.2 a 37.5 e-i 85.2 c-f 52-48 a-d
Pioneer 3223 8.7 a 35.9 a-c 165.1 a 39.8 b-c 86.6 a-b 52-48 a-d
Hyperformer HS9843 8.6 a 37.2 a-e 155.0 a 38.6 d-h 87.0 a 50-50 a-c
Pioneer 3163 8.5 a 34.7 b-c 162.6 a 42.3 a-e 84.5 c-f 51-49 a-c
Northrup King N 8655 8.5 a 40.7 a 145.7 a 36.6 f-j 81.9 g 44-56 a-e
llHpcrfonner AP 9707 8.5 a 41.1 a 165.5 a 39.4 c-f 86.9 a-b 55-45 a-b
Dekalb DK 706 8.5 a 37.2 a-e 167.8 a 38.7 d-h 83.9 f 53-17 a-c
Cargill 8527A 8.4 a 34.4 c-e 162.2 a 37.5 e-i 81.8 g 50-50 a-c
Pioneer 3146 8.4 a 37.1 a-c 158.3 a 38.1 e-i 84.8 c-f 50-50 a-c
Agra Tech 770 8.4 a 38.4 a-d 159.7 a 38.3 d-i 86.2 a-d 52-48 a-d
Pioneer 3154 8.4 a 40.6 a 155.8 a 36.4 g-j 82.5 g 49-51 a-e
Northrup King N 8811 8.2 a 36.8 a-c 159.0 a 36.4 h-j 84.8 e-f 52-48 a-d
Cargill 8328 8.1 a 41.1 a 154.8 a 35.6 i-j 86.7 a-b 53-47 a-c
Northrup King N 7931 8.1 a 39.8 a-c 147.4 a 34.5j 84.9 e-f 49-51 a-e
Agra Tech 888 7.9 a 39.9 a-b 130.1 a 39.3 d 82.4 g 4.1-56 b-e
Pioneer 3167 7.8 a 38.7 a-c 150.9 a 141.1 a-d 85.7 b-e 52-18 a-d
Pioneer 3245 7.5 a 35.8 a-e 149.0 a 37.2 c-i 87.4 a 55-.5 a
Average 8.7 36.9 155.9 39.1 84.3 49-51


SMean within a column followed by the same letters) are not significantly different at the 5% level of probability (Waller-Duncan K ratio, K=100)
t Based on 15.5% moisture (shelled corn).
1 Determined at harvest.
Expressed as a percentage by weight on an oven-dry basis.
Seeding date: 11 March 1997
Plant population (final): 28,000 plants er acre.









Table 3. Average forage and grain yields of selected corn varieties tested at the Range Cattle Research and Education Center, Ona, over a 2 to 3 )yar
period.


1993 1995 1997 Average

Brand or Forage Grain Forage Grain Forage Grain Forage Grain
Company Variety dry matter yield dry matter yield dry matter yield dry matter yield

ton/acre bu/acre ton/acre bu/acre ton/acre bu/acre ton/acre bu/acre

Agra Tech 1177 10.5 199.0 11.1 144.0 9.8 146.2 10.5 163.1
Northrup King (McNair) 508 10.1 1-19.0 10.1 156.6 10.1 152.8
Pioneer 3085 9.4 181.0 10.3 176.0 9.5 153.1 9.7 170.0
Dekalb DK 683 9.6 169.0 9.8 154.7 9.7 161.9
Dekalb DK 714 10.2 168.0 8.7 168.2 9.5 168.1
Pioneer 3223 10.1 187.0 8.7 165.1 9.4 176.1
Hypcrformnr HS 9843 9.9 201.0 8.6 155.0 9.3 178.0
Dekalb DK706 9.5 186.0 8.5 167.8 9.0 176.9
Pioneer 3146 9.2 187.0 9.2 199.0 8.4 158.3 8.9 181.4
Pioneer 3154 7.0 197.0 10.6 186.0 8.4 155.3 8.7 179.4
Northrup King N 8811 9.1 177.0 8.7 188.0 8.2 159.0 8.7 174.7
Pioneer 3167 9.3 188.0 8.3 138.0 7.8 150.9 8.5 159.0
Pioneer 3245 8.3 165.0 9.3 187.0 7.5 149.0 8.4 167.0
Pioneer 3163 7.5 172.0 9.0 185.0 8.5 162.6 8.3 173.2

* Not tested duringJ 993.




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