valuation
of
Corn
V4
Department of Agronomy and Soils Departmental 
Series No. 174
Alabama Agricultural Experiment Station Auburn 
University
Lowell T. Frobish, Director Auburn University 
November 1993
I
in
Alabama.
1993

TABLE OF CONTEs
INTRODUCTION.............................................................................................. 5
ACKNOWLEDGMENTS ....................................................................................... 7
Table 1. Locations and Cultural Practices for the 1993 Corn Hybrid Tests............... 8
NORTHERN ALABAMA
Table 
2
A. Two- and Three-year Yield and Lodging Averages for Yellow Com for
Northern Alabama, 1991-93.............................................9
Table 2B. Two- and Three-year Yield and Lodging Averages for Yellow Com for
Northern Alabama, 1990 and 1992-93. ............................... 10
Table 3. 1993 Yield of Yellow Com Hybrids by Location and Regional Averages
of Hybrid Characteristics in Northern Alabama. .......................... 11
Table 4. White Corn Hybrid Test, Northern Alabama, 1991-93 .................................... 12
Table 5. Early Corn Hybrid Test, Northern Alabama, 1991-93 ................................... 13
Table 6. Characteristics of Corn Hybrids Tested One Year in Preliminary Test at
Crossville in Northern Alabama, 1993. ................................ 14
CENTRAL ALABAMA
Table 7. Two- and Three-year Yield and Lodging Averages for Yellow Corn for
Central Alabama, 1991-93........................................ 15
Table 8. 1993 Yield of Yellow Com Hybrids by Location and Regional Averages
of Hybrid Characteristics in Central Alabama ................................................ 16
Table 9. White Corn Hybrid Test, Central Alabama, 1991-93 ...... ................. 17
Table 10. Early Corn Hybrid Test, Central Alabama, 1991-93....................... 18
Table 11. Characteristics of Corn Hybrids Tested One Year in Preliminary Test Tallassee
in Central Alabama, 1993........................................................... 19
con't.
BLACK BELT
Table 12. Black Belt Corn Hybrid/Virus Test 1991-93............. 
................ 20
SoUTHERN ALABAMA
Table 13. Two- and Three-year Yield and Lodging Averages 
for Yellow Corn for
Southern Alabama, 1991-930........................................................................21
Table 14. 1993 Yield of Yellow Corn Hybrids by Location 
and Regional Averages of
Hybrid Characteristics in Southern Alabama 6.................................................. 
.22
Table 15. Irrigated Corn Hybrid Performance and Characteristics 
at
Headland, 1991-93............................................. 
.23
Table 16. White Corn Hybrid Test, Southern Alabama, 1991-93 
...................................... 24
Table 17. Early Corn Hybrid Test, Southern Alabama, 
1991-93. ...................... 25
Table 18. Characteristics of Corn Hybrids Tested One 
Year in Preliminary Test at
Fairhope in Southern Alabama, 1993. .................................
26
Virus Disease Reactions Of Some Hybrids In 1993 ..................................................... 
.27
Procedure ......................................................................... ............................. 
.27
Results...................................................... 
27
Table 19. Incidence of Maize Chlorotic Dwarf Virus Disease 
in Regular Corn Hybrid
Tests, 1993...................................................28
Table 20. Incidence of Maize Dwarf Mosaic Virus Disease 
in Regular Corn Hybrid
Tests, 1993...................................................29
Table 21. Growing Season Rainfall, 1991-93................................... 
.30
Table 22. Soil Types for Corn Trials, 1993 .....................................
31
Sources Of 1993 Corn Hybrid Test Seed.................................................... 
32
Information contained herein is available to all without regardless
of race, color, sex, or national origin
EVALUATION OF CORN HYBRIDS IN ALABAMA, 1993
IKM. Glass, D.I. Bransby and RT. Gudauskas'
INTRODUCTION
Selected varieties of corn hybrids are evaluated annually by the Alabama Agricultural Experiment
Station as a service to producers and industry. These tests are spread throughout the state in an attempt to
determine effects of different climatic factors and soil types on yield. There are several types of tests in the
program. The Preliminary Hybrid Tests are conducted at one location in each of the northern, central and
southern regions of the State. These tests include experimental and newly released hybrids. If a hybrid is
outstanding in the preliminary test it is entered in the Regular Corn Hybrid Test in the following year.
The Regular Corn Hybrid Test is conducted at four locations in the northern region, four locations in
the central region and four locations in the southern region. White and early yellow corn hybrids also are
tested at one location in each region. In addition, one regular and one white corn hybrid test are irrigated at
Headland in southern Alabama. Locations and cultural practices for all ests are shown in Table 1.
PROCEDURE
All tests are laid out in a randomized complete block design with four replicate plots for each variety
at each location. Rows are 30 to 36 inches apart, depending on location. Two-row plots are used, and
both rows are harvested. Plots are 20 to 30 feet long, depending on location. The target plant population
for the tests is 20,000 plants per acre with a seeding rate of 23,000 seeds per acre. The irrigated tests at
Headland are seeded at a rate to achieve 30,000 plants per acre, but are thinned to 25,000 plants per acre.
Grain yields are adjusted to 15.5 percent moisture and converted to bushels (56 lb) per acre.
Stalks broken or leaning more than 45 degrees are considered lodged. The mid-silk data show the number
of days from planting until approximately half the plants in the plots are showing silks. The Regular Corn
Hybrid tests also are examined for disease incidence at selected locations each year. When virus or other
1
Research Assistant, Professor of Agronomy and Soils, and Professor of Plant Pathology.
-5-
disease symptoms indicate crop damage, disease ratings are compiled and published in 
this report. Virus
infection data from the tests at Belle Mina, Marion Junction, and Winfield 
are reported this year (Fable 19
and Table 20), and are preceded by a report on the importance 
of the diseases, how they are rated, and the
relevance of the results.
Interpretation of Data
In replicated experiments such as those reported here, yields from each 
of the four replicate plots of
a particularvariety at a given location will be slightly different, 
because of inherent differences in productivity
among those plots. These differences in yield among replicate plots 
are known as random variation. Given
this situation it is clearly necessary to have a method to determine 
whether differences among hybrids are
"true" or "real" differences, or whether they are due to random 
variation. To do this a statistical analysis
is conducted to determine a "least significant difference" (LSD)by 
comparing the differences among
varietieswith random variation. If the difference in yield between 
two hybrids is larger than theLSD, then
the difference is probably real, but if the difference is less 
than the LSD, it may not be real. If the difference
between two hybrids is less than, but close to the LSD, then there 
is still a chance that it is real, but if it is
considerably smaller than the LSD, then it is probably not real 
and mainly due to random variation.
With this in mind it is very important to study differences in hybrid 
yields in relation to the LSD
which is provided at the bottom of the table for each of the current 
year yield columns at each location.
Clearly, LSD'svary from one location to another. This is because 
random variation varies among locations
and from year to year. The coefficient ofvariation (CV) is a reflection 
of random variation, and is reported
below the LSD values in the tables. If the CV is low, a precise 
or reliable test is indicated. Ideally, the CV
should be below 10 percent, but CV's of 10 to 20 percent are acceptable. 
Values for the CV above 20
percent indicate a rather unreliable test, which may havebeen 
caused by factors such as disease variation
among replicates, etc.
In comparing yield potential of two hybrids it is important to consider a wide 
range of results. Do
not focus on results from only one year at one location. Two- and three-year average 
yields are provided
by location and region. These are more useful guides than yields from only one 
year. However, other
factors may deserve consideration. For example, the differences between the highest 
and the lowest yield
-6-
of a hybrid across several locations may be an indication of the stability of its yield under variable conditions,
or of the "risk level" of the variety.
Differences in yield of hybrids among locations will be a result of the combined effects of differences
among locations in soil, weather (mainly rainfall), planting date, weed control, and other factors. To assist in
estimating which factors most likely had the greatest effect on yield differences among locations, planting
dates and cultural practices (Table 1), rainfall records (Table 21) and soil types (Table 22) are provided.
This information also serves as a guide for assessing conditions to which results may be extrapolated.
AccKNOWLEDGu Eis
Appreciation is expressed to the following supervisory personnel of the outlying units whose quality
work makes this a reliable source of information for farmers in their areas.
NORTHERN ALABAMA
Tennessee Valley Substation, Belle Mina ........................... W. B. Webster, H.E. Burgess, and B.E. Norris
Sand Mountain Substation, Crossville ................................................. I...... J.T. Eason, and M.E. Ruf
Upper Coastal Plain Substation, Winfield .............................................. W.A. Griffey, and R.C. Rawls
CENTRAL A AmMA
Black Belt Substation, Marion Junction .................................................... J.L Holliman, and J.R. Harris
Prattville Experiment Field ............................................................................................. D.P. M oore
E.V. Smith Research Center, Shorter ................................................................................ B. Durbin
Plant Breeding Unit, Tallassee ................................................................................. S.P. Nightengale
Lower Coastal Plain Substation ................................................................. J.A. Little, and P.A. Rose
SOUTHERN ALABAMA
Brewton Experiment Field ............................................... ............................................. J.R. Akridge
M onroeville Experiment Field ............................................................................................. J.R. Akridge
Gulf Coast Substation, Fairhope .................................. E. L. Carden, N.R. McDaniel, and M.D. Pegues
Wiregrass Substation, Headland ............................................ H.W. Ivey, L.N. Wells, and B.E. Gamble
Appreciation is also expressed to Mien-Huei Tzeng, Research Data Analysis, for the computation,
summarization, and analysis ofthe data in this report.
-7-
TABLE 1. LOCATIONS AND CULTURAL PRACTICES FOR THE1993CORNHYBRIDTEsS
Planting Nitrogen Plant Date Herbicides
Location date rate* population harvested used
Northern Alabama
Tennessee Valley Substation
S oellead ntau 0 *April 2
Sand lountam Substation (Crossville)
Early corntest........... April13
Regulartest.............. April 14
Preliminary test...........April 13
White corn test......... .. April 14
Upper Coastal Plain Substation
(Winfield).............. April 14
CentralAlabama
E.V. Sm ith Research Center (Shorter)
Early corn test............00 March 29
White corn test......... 0090 March 29
Plantreeding Unit
(7Jallassee)..............000066* March 29
PrattvilleExperimentField
(Prattville)...............~e*oO9 March 19
BlackBelt Substation
(Marion Junction)......April 28
Lower Coastal Plain Substation
(Camden). .... o.o.... o....... April 14
135
153
153
153
153
120
150
150
173
120
150
120
20,000 September 13 Atrazine/Dual
201,000
20,00
20,000
20,000
September 14
September 14
September 17
September 17
20,000 October 5
20,000 August 17
20,000 August 17
20,000 August 20
20,000 September 7
20,000 August 30
20,000 August 25
Atrazine/Dual
Atrazine/Dual
Atrazine/Dual
Atrazine/Dual
Atrazine
Atrazine/Lasso
Atrazine/Lasso
Atrazine/Lasso
Atrazine
Atrazine
Atrazine/Dual
SouthernAlabama
BrewtonExperimentField
(Brewton). .
MonroevilleExperimentField
(Monroeville)....... s
Wiregrass Substation (Headland)
Regular test (unirrigated)..
Regular test (irrigated)..
White corn test (irrigated).
Gulf Coast Substation (Fairhope)
Early corntest........
Regular test ..............
Preliminary test...........
March 11 120
March 10 120
April7
April7
April 17
March 1
March 29
March 29
120
200
200
150
150
150
20,000 September 22
20,000 September 14
20,000
25,000
25,000
203,000
20,000
20,000
August 13
August 31
August 31
August 16
August 16
August 17
Atrazine/Dual
Atrazine/Dual
Atrazine
Atrazine
Atrazine
Atrazine/Dual
Atrazine/Dual
Atrazine/Dual
*Pounds per acre N. Lime, phosphorus, potassium,
test recommendations.
zinc, and sulfur were applied according to soil
-8-
TABLE 2A. TWO- AND THREE-YEAR YIELD AND LODGING AvERAGES FOR YEUOW
CORN FOR NORTHERN ALABMA*, 1991-93
Yield Per Acre, Av. Lodged Stalks, Av.
Brand 3-yr. 
2-yr. 3-yr. 2-yr.
name-hybrid 1991-93 1992-93 1991-93 
1992-93
Bu. Bu. Pct. Pct.
DEKALB DK 715............................. 141 154 0.7 0.3
Pioneer3140 ..................................... 139 142 2.0 
2.8
Pioneer3154 ................................... 138 148 3.0 
3.5
Pioneer3165 .................................. 138 146 0.8 1.0
DEKALB DK 689.......................... 137 143 1.7 1.8
TerraTR 1180.................................. 137 140 0.3 
0.3
Northrup King N8727 ...................... 134 136 
1.0 1.5
DeltapineG-4666 .............................. 132 137 
0.8 1.0
Hy Performer HS 9911 ....................... 132 142 1.2 1.0
AgraTech888.............................. 132 138 
1.2 1.5
Northrup King S8645 ................. 131 134 
0.8 1.0
ZimmermanZ27..............................126 129 
1.7 2.0
AgriGeneAG7935 ................................. - 151 
- 3.5
DEKALB DK 74...........- 
150 - 3.3
Dyna-Gro 5509 ............................... - 149 
- 1.5
Pioneer3085..................- 
143 - 4.0
ICI 8105.......- 141 
- 0.5
Pioneer3146........................ - 140 
- 1.5
Terra TR 1167..... ................. -
129 - 0.8
* Belle Mina and Crossville.
-9-
TABLE 2B. Two- AND THREE-YEAR YIELD AND LODGING AVERAGES FOR YELLOW
CORN FOR NORTHERN ALABAMA*, 1990 & 92-93
Yield Per Acre. Av. Lodged Stalks, Av.
Brand 3-yr. 2-yr. 3-yr. 2-yr.
name-hybrid 1990 & 92-93 1992-93 1990 & 
92-93 1992-93
Bu. Bu. Pct. Pet.
Pioneer3140 ....................................... 121 123 1.3 1.5
ZimmermanZ27 ............................... 116 113 4.0 6.0
Pioneer3165 .................................. 115 112 1.0 1.0
DEKALB DK 689 ................................. 109 108 3.0 4.0
AgraTech888 ............................. 107 101 1.3 2.0
DeltapineG-4666 ................................. 105 104 3.7 
5.0
Terra TR 1180 ................................... 102 100 1.3 2.0
Northrup King S8645 ....... .......... 99 94 2.7 4.0
Northrup King N8727 ........................... 93 84 3.7 5.5
Pioneer3085.......................................... - 141 - 5.5
Pioneer3146 ..................................... - 121 - 2.5
DEKALBDK715 ................................. - 118 - 7.0
ICI 8105 ........................................... . - 116 - 2.5
Terra TR 1167 ...................................... - 115 - 2.0
DEKALBDK743 ....................- 114 - 5.0
Pioneer3154 ......................................... - 111 - 2.5
Dyna-Gro5509 ..................................... - 111 - 1.5
AgriGeneAG7935 ................................ - 110 - 10.5
Hy Performer HS 9911 ........................... - 102 - 2.0
*Winfield.
-10-
TABLE 3. 1993 YIE OF CoRN HYBRDS BY LOCATION ANDREGIONALAVERAGEs OFHYBID
CHARACrERISrICS IN NORTHERN AAAMA
1993 Regional Averages
Brand Belle Mina Crossville Winfield Yield Lodged Test Mid-** Husk* Harvest
name-hybrid per acre stalks weight silk cover moisture
B3u.
Pioneer3140......175
Pioneer 3154......182
Pioneer 3085 177
Pioneer3167. 160
Hy Performer
HS 9773.......154
DEKALB
DK 715.......171
Agriene
AG 7935.......152
Dyna-Gro 55090 166
Pioneer3l65 160
AgriGene
AG 7890.......152
ICI 8105........159
DEKALB
DK 743.......142
Hy Performer
HS991 .......140
Northrup King
N8811 ......... 158
DEKALB
DK 689.......000143
Pioneer3l46 140
Dyna-Gro 55lO0 149
TeraTR 1180....147
ZimmermanZ27..146
Terra TR 700E 152
TerraTR 1167....142
DeltapineG-4666 141
AgraTech 888....131
AgraTech757,,,,130
Northrup King
N8727........000132
Northrup King
S8645.....124
Bu.
84
94
72
88
Bu. Bu. Pct. Lb./kBu. Mo.-IDa. Rating Pct.
132
132
128
123
2.7 56.8
3.0 57.6
1.7 58.8
1.0 58.4
7-1
6-30
7-3
7-3
2
2
3
2
139
121
134
122
79 136 123 1.3 57.0
75 115 120 1.0 57.7
104
91
77
90
79
102 119 2.3 57.5
102 119' 1.3 58.1
117 118 0.7 59.1
106 116 .1.3 58.1
104 114 0.3 58.4
85 112 113 2.3 58.0
94 104 112 1.0 59.0
60 116 111 0.7 59.3
87
68
79
84
64
78
73
79
84
69
88
77
101
122
100
92
111
88
103
95
87
103
110
110
109
107
107
106
106
105
101
100
1.3 57.6
2.0 59.9
0.3 59.5
0.3 58.3
1.0 58.0
1.7 57.5
0.7 58.2
1.0 58.9
1.3 57.6
1.0 58.7
58 93 1.3 59.7
76 92 1.3 58.6
14.0
13.7
14.7
15.1
6-30 2 13.9
6-29 2 13.9
7-3
6-30
7-3
7-3
7-2
7-1
7-1
7-2
7-2
7-1
6-29
7-1
7-2
7-2
7-1
7-1
7-1
7-3
7-2
7-1
2
2
2
2
2
14.7
13.7
14.7
13.4
15.1
2 14.7
2 14.2
2 14.7
2
2
2
2
2
3
2
2
2
2
14.1
14.2
13.6
13.9
13.2
14.4
13.1
13.7
13.7
13.1
2 14.8
2 13.5
TestAverage .... 150.7 80.6 106.2
L.S.D. (.05)....... 24.4 17.2 37.2
CV) (%).......468 11.5 15.2 24.9
*l 1 Excellent; 5=Very Poor.
-11-
TABU3 4. WHm~ CoiR HYBRID Thsr, NORMhERN AL-ABAmA*, 1991-93
Yield Per Acre. Av. Lodged Stalks, A1993
Brand 3-yr. 2-yr. 1993 
3-yr. 2-yr. 1993 Midsilk Test Husk*** 
Harvest
name-hybrid 1991-93 1992-93 1991-93 
1992-93 weight cover moisture
Bu. Bu. Bu. Pct. Pct. Pct. Mo./Da. 
Lb./Bu. Rating Pct.
Pioneer 3165**
DEKALB DK69**
Zimmerman
Z63W......
Hy Performer
HS 175W .
Zimmerman
754W ......
Zimmerman
Z16W.......
Pioneer3281W
HyPerformer
HS 165W.
Hy Performer
HS 185W ....
Zimmerman
Z64W.......00000
Terra TR563E ..
Hy Performer
HB227094W..
Hy Performer
HB227096W
Zmerman
Z27**.......06090
DEKALB DK
703 W......00000
137 143 99
132 140 88
0.7
1.3
131 140 80 2.7
125 131 83 2.0
123 127 80 3.3
121 126 78
116 122 77
- 131 
84
- 124 71
- -
98
w - 86
m - 81
m 74
- - 70
- - 66
2.3
1.3
0 0 7-7 54.4
1.5 2.0 7-8 53.1
18.1
17.5
3.0 5.0 7-7 55.0 1 17.4
2.0 3.0 7-8 54.8 1 18.0
3.0 5.0 7-9 53.5 1 18.0
2.5 5.0 7-5 55.0
1.0 1.0 7-9 55.6
17.9
17.5
1.5 2.0 7-7 54.1 1 16.7
- 3.5 6.0 7-7 55.1 1 17.3
2.0 7-6 52.2 1
- 0 7-7 53.9 2
17.5
17.1
- 3.0 7-7 55.6 1 17.0
- 2.0 7-6 55.0 1 17.1
1.0 7-8 54.0 2 16.9
5.0 7-7 54.3 1 17.1
TestAverage.
L.S.D. (.05).
C. . % .*o**0060
80.8
18.7
16.2
* Crossville.
*Yellow Corn Check Hybrid.
S1= Excellent; 5= Very Poor.
-12-
Z1V Tt;llOl~IIlt=T
TABLE 5. EARLY CORN HYBRID T~s, NORTHERN ALABAmA*, 1991-93
Yield Per Acre, Av. Lodgeed Stalks, Av. 1993
Brand 3-Yr. 2-Yr. 1993 3-Yr. 2-Yr. 1993 Midsilk Test Husk** Harvest
name-hybrid 1991-93 1992-93 1991-93 1992-93 weight cover moisture
Bu. Bu. Bu-. Pct. Pct. Pct. Mo./Da. Lb./Bu. Rating Pct.
DEKALB DK
689***
Pioneer3l65***
ZimmermanZ27*
DeltapineG-4666.
Deltapine458
Pioneer3245
Pioneer 3394..
ICI 8315......90000
NorthrupKing
N6330. ..
1C18105. ..
ICI18513......0**0
DEKALB DK
646...........
Deltapine 4450 ..
TestAverage
L.S.D. (.05).
Cove (%).....19*006
140
139
124
121
119
112
103
128
128
119
123
106
101
99
114
98
86
89
98
76
83
82
68
102 80
- 89
- 84
- 84
- 57
1.3
0.7
0.7
1.3
0.7
1.0
1.0
2.0
1.0
1.0
1.5
0.5
1.0
1.5
1.0
3.0
2.0
1.0
2.0
1.0
2.0
2.0
2.0
S 2.5 4.0
- - 1.0
- - 2.0
0 7-1 56.4 2
3.0 6-30 56.5 2
82.5
16.4
13.8
*Crossville.
*1= Excellent; 5= Very Poor.
**Standard Mid to Late Season Hybrids.
-13-
7-4
7-5
7-5
7-3
7-5
7-3
6-27
7-4
7-2
7-4
6-28
57.0
56.1
55.9
56.8
57.7
56.9
56.4
55.8
55.3
57.3
54.6
1
1
1
1
2
2
1
2
1
1
2
15.3
16.0
14.9
15.6
15.2
14.6
14.1
14.0
14.0
15.6
14.8
14.4
14.8
----- -- ~----- vrr ~rv ~rrr --
C\I~~k rr ~r U rrh
REPORT OF PRELIMINARY TEsr
TABLu3 6. CHARACTERSTICS OF CORN HYBRIDS Ti~sriD ONE YEAR IN PRELIMINARY
Ti~sr AT CROSSVILLE IN NORTHERN Aukam, 1993
Brand Av. yield Lodged Husk* Midsilk Test Harvest
name-hybrid per acre stalks cover weight moisture
Bu., Pct. Ratn Mo.-Da. Lb.IBu. Pct.
ORO 188...................0000000Soo 108 3.0 1 7-4 55.5 16.1
DEKALBDK689**.......102 3.0 1 7-4 55.6 16.1
Pioneer 3l65**.........94 6.0 1 7-5 56.4 16.6
HyPerformerHS 9944......93 2.0 1 7-5 
55.5 15.6
HyPerformerHS9843......93 2.0 1 7-4 56.2 15.7
AgraTech 787.........92 2.0 2 7-6 55.7 
15.9
AgraTech8l0.........92 4.0 1 7-5 55.5 15.9
TerraTR7O2E ........... 88 2.0 1 7-5 56.0 16.0
ICI 8100...........82 0 1 7-5 56.7 16.2
Northrup King X75l1............ 78 2.0 1 7-2 56.3 15.4
ZimmermanZ29............*000090. 77 2.0 1 7-4 55.8 15.8
DEKALBEXP 372 ............. 00*0 77 1.0 1 7-5 56.4 16.0
Pioneer 3163........................ 74 1.0 2 7-5 55.6 15.8
Hy Performer HS 9977............ 71 0 1 7-5 58.1 16.1
ZimmermanZ27**................. 70 3.0 1 7-4 45.7 16.1'
ICI1N0320...................0000 9*so 67 1.0 1 7-2 56.6 15.8
Northrup King N7989...........0000 67 2.0 2 7-4 56.3 16.3
Pioneer3l56 ................... 00000 66 5.0 1 7-6 57.4 16.1
Hy Performer HS 9848............ 64 2.0 2 7-6 56.,0 15.8
TestAverage....................... 81.7
L.S.D. (.05)..........18.4
C.V. (%)...........15.9
*1 =Excellent; 5= Very Poor.
*Standard Hybrids for Comparison.
- 14 -
TMB~l 7. Two- AND THREE-YEAR YIEU AND LODGING AviExoiES FOR YiEiiow
CORN FOR CENTRAL ALAB~mA*,, 1991-93
Brand
name-hybrid
AgriGeneAG7935.........
Pioneer 3165 .................
DEKALB DK 689.............69*0000
DeltapineG-4666.......
Pioneer3 154.........
Pioneer 3140.........
TerraTR 16........
Pioneer 3146.........
Dyna-Gro 5509........
Yield Per Acre, Av.
3-yr. 2-yr.
1991-93 1992-93
Bu. Bu.
89
84
84
83
81
77
76
70
69
67
72
64
80
78
73
72
Lodged Stalks. Av.
3-yr. 2-yr.
1991-93 1992-93
Pct. Pct.
1.7
3.0
2.0
1.0
5.3
3.2
1.8
2.3
2.3
1.0
5.3
3.5
1.0
2.0
1.3
1.0
* Prattville and Camden.
-15-
I~AR'IF, /, ~ I UIC)- ANTb ~ I UREE- YEAR YIET-n ANn I ~nrn
LILjl\~L~U II I\ I~(~~ ,,,,,,,,,,,,,,,,,,- ---------
TABLE 8. 1993 YIELD OF CORN HYBRIDS BY LOCATION AND REGIONAL AVERAGES OF HYBRID
CHARACTERISTICS IN CENTRAL ALABAMA
1993 Regional Averages
Brand Prattville Camden Yield Lodged Test Midsilk Husk* Harvest
name-hybrid per acre stalks weight cover moisture
Bu. Bu. Bu. Pct. Lb./Bu. Mo.-Da. Rating Pct.
Pioneer 3085 ................... 32
Pioneer3154 ................... 52
AgriGeneAG7935....... 49
Pioneer3167 ................. 38
Dyna-Gro 5509 .......... 51
Terra TR 1167 ............ 37
Terra TR 700E ................ 48
AgriGene AG7885s ....... 47
Northrup King S8645 ...... 37
Dyna-Gro 5510 .............. 45
Pioneer3140 .............. 44
ICI 8105 ...................... . 34
Pioneer3146 ............... 37
DEKALBDK689 ......... 43
ZimmermanZ27 .............. 44
Terra TR 1180 ................ 34
Pioneer3165 .................. 35
Deltapine G-4663 ........... 31
TestAverage .................. 40.9
L.S.D. (.05) ...... ...... 12.7
C.V. (%) ...... ........ 22.0
56
35
37
46
26
40
25
26
33
23
24
31
28
21
17
26
18
22
44
44
43
42
39
38
37
36
35
34
34
33
32
32
30
30
27
26
2.0 57.8 6-18
7.5 57.0 6-16
2.0 55.6 6-17
2.5 55.9 6-18
2.0 55.7 6-15
2.0 56.3 6-17
4.0 55.8 6-17
3.0 54.9 6-18
3.5 56.3 6-17
1.0 56.2 6-15
6.5 53.6 6-17
2.0 59.6 6-18
2.0 57.5 6-17
4.0 56.2 6-17
3.5 53.8 6-18
2.5 56.2 6-17
4.5 55.4 6-18
2.0 55.4 6-16
2
2
3
2
2
2
3
3
2
3
3
2
3
2
3
2
3
3
12.8
13.4
12.1
12.5
12.6
12.2
12.4
12.6
12.5
13.0
12.0
13.1
12.9
12.8
12.2
12.1
12.8
12.8
29.6
16.9
40.4
* 1= Excellent; 5= Very Poor.
Yield reduction occurred at Camden due to severe bird damage.
-16-
~ C AAIII -- -- --
TABLE 9. WHTE CORN HYBRID TESr, CENm ALABAMA*, 1991-93
Yield Per Acre, Av. Lodged Stalks, Av. 1993
Brand 3-yr. 2-yr. 1993 3-yr. 2-yr. 1993 Midsilk Test Harvest
name-hybrid 1991-93 1992-93 1991-93 1992-93 weight moisture
Bu. Bu. Bu. Pct. Pct. Pct. Mo./Da. Lb./Bu. Pct.
ZimmermanZ63W .............. 131 125 81 4.7 7.0 11.0 6-22 56.0 7.5
ZimmermanZ54W .............. 129 123 85 4.7 6.0 11.0 6-23 54.6 7.2
DEKALB DK 689** .......... 129 122 91 1.7 2.5 4.0 6-23 55.0 7.0
Pioneer3165** .................. 126 114 67 4.3 6.5 12.0 6-25 56.6 6.3
HyPerformerHS 175W..... 122 121 83 5.0 7.0 13.0 6-25 54.6 6.3
Pioneer3281W .................. 121 114 78 1.0 1.5 3.0 6-24 57.9 7.9
ZimmermanZ16W .............. 115 110 72 3.0 4.0 8.0 6-21 56.2 6.6
Hy Performer HS 165W...... - 116 79 - 1.5 3.0 6-22 55.8 6.8
Hy Performer HS 185W...... - 114 69 - 4.5 8.0 6-21 56.4 7.0
Zimmerman Z64W .............. - - 86 - - 2.0 6-23 55.0 6.0
AsgrowRX951 ................. - - 82 - - 13.0 6-26 57.7 6.5
Asgrow RX 959W........... - - 77 - - 7.0 6-27 56.9 7.2
TerraTR563E............. - - 75 - - 3.0 6-21 55.6 6.7
DEKALB DK 703 W ......... - - 73 - - 9.0 6-21 56.9 7.5
ZimmermanZ27** .............. - - 67 - - 5.0 6-23 54.7 6.3
TestAverage ...................... 77.4
L.S.D. (.05) ........................ 16.4
C.V. (% ) ............................ 14.8
* Shorter.
** Yellow Corn Check Hybrid.
-17-
TABLE 10. EARLY CORN HYBRID TEST, CEmRAL ALAaAMA*, 1991-93
Yield Per Acre, Av. Lodged Stalks, Av. 1993
Brand 3-yr. 2-yr. 1993 3-yr. 2-yr. 1993 Midsilk Test Harvest
name-hybrid 1991-93 1992-93 1991-93 1992-93 weight 
moisture
Bu. Bu. Bu. Pct. Pct. Pct. Mo./Da. Lb./Bu. Pct.
DEKALB DK689** ......... 133 120 62 2.3 3.5 7.0 
6-25 54.6 7.2
Pioneer3245 ................. 127 116 58 1.3 2.0 4.0 6-22 58.5 7.5
DeltapineG-4666 ............... 123 115 72 0.3 0.5 1.0 6-22 55.9 
6.9
ZimmermanZ27 ........... 121 111 54 2.0 2.5 5.0 6-24 54.4 6.6
Pioneer3165** .................. 120 110 48 3.0 4.0 8.0 6-23 55.0 
7.8
Deltapine4581 ............ 113 103 53 1.3 1.5 
3.0 6-23 55.8 6.7
Pioneer3394 ...................... 112 101 40 1.7 2.5 
5.0 6-18 56.1 6.8
ICI 8315 ............................ - 116 60 - 3.5 6.0 6-24 
54.6 6.5
ICI 8105 ................... - - 55 - -
2.0 6-22 57.8 7.2
IC1 8513 ...................... - - 46 -
- 2.0 6-17 54.4 7.4
Deltapine4450 ............. - - 33 -
- 2.0 6-18 55.8 6.9
TestAverage ...................... 52.6
L.S.D. (.05) ....................... 13.4
C.V. (% ) ............................ 17.7
* Shorter.
** Standard Mid to Late Season Hybrids.
Substantial yield reduction occurred due to wildlife damage.
-18-
REPORT OF PRELIMINARY TEsrs
TABLE 11. CHARACTERIScs OF CORN HYBRIDS TESTED ONE YEAR IN PREUMINARY TEsr
AT TAUASSEE IN CENTRAL ALABAMA, 1993
Brand Av. yield Lodged Husk* Midsilk Test 
Harvest
name-hybrid per acre stalks cover weight moisture
Bu. Pet. Rating Mo.-Da. Lb.fBu. Pct.
Terra TR 702E .......................... 143 1.0 3 6-22 56.9 11.3
Hy Performer HS 9944 .............. 143 1.0 2 6-24 56.4 11.1
Pioneer3165** ........................ 138 1.0 3 6-22 57.3 11.8
DEKALB DK 689** ................. 137 2.0 3 6-22 56.5 
13.6
Pioneer3163 ........................ 137 3.0 4 6-18 56.5 12.3
Hy Performer HS 9848 .............. 131 1.0 3 6-20 
56.4 9.9
Hy Performer HS 9843 .............. 129 0 3 6-17 56.9 
8.7
ZimmermanZ27** ..................... 125 5.0 4 6-22 56.2 
11.1
Hy Performer HS 9977 .............. 122 0 3 6-22 
58.9 10.5
Zimmerman Z29........................ 122 0 
3 6-21 57.6 9.5
ORO 188 ................... 114 2.0 3 
6-15 56.6 9.7
Pioneer3156 ......................... 114 1.0 2 
6-19 55.4 14.0
IC1 8100 .................................. 106 0 4 
6-24 58.0 10.2
TestAverage ......................... 127.8
L.S.D. (.05) .............................. 25.0
C.V. (%) .............................. 13.7
* 1= Excellent; 5= Very Poor.
** Standard Hybrids for Comparison.
-19-
TiL12. BLACK BELT CORN HYBiDfViRus TF-sr*, 1991-93
Yield Per Acre, Av. Lodged Stalks, Av. 1993
Brand 3-yr. 2-yr. 1993 3-yr. 2-yr. 1993 Midsilk Test Husk** Harvest
name-hybrid 1991-93 1992-93 1991-93 1992-93 weight cover moisture
Bu. Bu. Bu. Pct. Pct.- Pct. Mo.-Da. Lb./Bu. Ratinig Pct.
Pioneer3085
Pioneer 3165
DEKALBDK
689.....
AgrieneAG
7935.......
Jacques 9220.
DEKALBDK
743........
Pioneer 3 154.
Deltapine4682
Pioneer 3146.
Pioneer3l67.
Pioneer 3140.
Pioneer 3156.
ICI 8105......*9*96
Terra TR 1167 ..
Dyna-Gro 55 10 ..
DeltapineG-4666.
Dyna-Gro 5509 ..
Deltapine 8695 ..
Terra TR 700E ..
TerraTR 1180.
ZmermanZ27..
Cargi11 8936 ....
AgrieneAG
7885.......00000
ICI 8120......e~so
Northrup King
88645........
100 97
97 95
41
40
6.3
5.7
95 90 40 4.3
92
91
89
91
39
39
94 39
90 42
77 35
- 50
- 48
- 42
- 42
- 41
- 39
- 37
- 37
- 36
- 36
- 36
- 35
- 34
- 32
- 32
- 31
- 27
4.7
4.0
9.5 4.0 7-3 -
8.0 4.0 7-6 -
6.5 4.0 7-3
6.0 4.0 7-7
5.5 4.0 7-5 -
5.5 4.0 7-4
8.0 4.0 7-1
- 4.5 3.0 7-7 -
- - 5.0 7-3 -
4.0 7-2
- - 5.0 7-1 -
- 4.0 7-6 -
- - 4.0 7-5 -
- - 4.0 7-8 -
- - 3.0 7-2 -
m 3.0 
7-5
3.0 7-5
-- 5.0 7-5 
-
-- 4.0 7-6 
-
-- 4.0 7-5 
-
-- 3.0 7-8 
-
m - 4.0 7-6 
-
- 4.0 
7-7
-- 4.0 7-5 
-
- - 4.0 7-6 -
Test Average .
L.S.D. (.05) ....
C.V. (%).....96*00
37.9
5.9
11.0
Marion Junction. See Table 19 & 20 for virus disease reactions.
**1= Excellent; 5= Very Poor.
-20-
2 16.5
2 13.7
2 13.5
2 13.6
2 14.2
2 14.0
2 16.3
1 12.4
2 14.3
2 16.3
3 15.3
1 14.3
2 14.5
2 14.1
2 14.9
2 13.0
2 15.4
2 13.3
2 14.9
2 13.3
3 12.4
2 14.5
2 14.0
2 13.7
2 11.6
~LVIL V 1. VJ 'I I 'T
1
TMAuL 13. Two- AND TimEm-YAR YIELD AND LODGING AvEGES FOR YELLOW
CORN FOR SouTHRNm~AABxiA, 1991-93
Yield Per Acre, Av. Lodged Stalks, Av.
Brand 3-yr. 2 -yr. 
3-yr. 2-yr.
name-hybrid 1991-93 1992-93 
1991-93 1992-93
Bu. Bu. Pct. Pct.
Jacques 9220 .. 00..0.......0.0....................... 108 102 
7.6 10.1
AgraTech888,,,,,,,,,,,,,,,,,,, ......... ........... 107 100 3.4 4.9
NorthrupKingS8645..... ............106 99 2.8 4.1
TerraTR 1180 ........ ,, .............. 105 95 3.0 4.3
AgriGeneAG7935..................105 95 5.5 
7.9
DeltapineG-4666000000000000000.................... 104 98 2.5 
3.6
Dekalb DK 689 0000000000000000..................... 103 96 4.7 
6.5
DeltapineDP5750........,.,., ................ 102 96 
3.0 4.
Cargill9027 00000..0.000....0....................... .99 94 
4.4 6.5
Pioneer3l65 .0.000.00................................99 93 
4o5 6.1
Hy Performer HS-99 11.................0*0*00000 98 98 
2.7 3.6
Northrup King N8727.................0066600 97 88 
2.2 3.1
Pioneer3085.............97 86 
3.9 5.3
Dekalb DK 715 o... se...........93 86 
3.3 4.6
NC+ 7507.............91 82 
5.8 7.3
Dekalb DK 743 ........... . ..... 94 
- 6.8
TerraTRll167.......................- 0000000091 
-4.4
Dyna-Gro 5509...................... ese..... -
91- 2.6
Zeneca 8105 .... ses............. 89- 
3.4
Pioneer 3 146........................a-00 0 0 a85 
-3.8
* Fairhope, Brewton, Monroeville, and Headland.
-21-
TAB3LE 14. 1993 YIELD OF CORN HYBRIDS BY LOCATION AND REGIONAL AVERAGES OF
HYBRID CHARACTERISTICS IN SoumHERN ALABA A
1993 Regional Averages
Brand Fairhope Brewton Monroeville Headland Yield Lodged Test Mid- Husk* Harvest
name-hybrid per acre stalks weight silk cover moisture
Bu. Bu. Bu. 
Bu. Bu. Pct. 
Lb./Bu. Mo.-Da. ing
Jacques 9220 .......... 15
Terra TR 700E........ 138
AgriGeneAG7935. 134
Pioneer 3167 ....... 126
AgraTech 888 ......... 136
Deltapine DP 5750 .. 124
DEKALBDK743 .... 130
Northrup King .........
S8645 ...... 120
Hy Performer
HS 9911 ........ 133
Cargill9027 ........ 133
Pioneer 3165 ........... 139
DEKALBDK689.... 143
ICI 8105 .............. 122
Deltapine4742 ........ 136
Terra TR 1167......... 136
Northrup King
N8811............... 147
Dyna-Gro 5509 ....... 133
Pioneer 3085 .......... 125
Terra TR 1180 ........ 115
Hy Performer HS
9773 ............... 136
Zimmerman Z27 ..... 142
Dyna-Gro 5510 ....... 126
DEKALBDK715 .... 136
Asgrow RX 899 ..... 127
Northrup King
N8727 ............... 124
Pioneer 3146 .......... 136
AgraTech 757 ......... 118
113
123
111
134
98
115
103
114
102
100
91
97
124
105
97
90
103
107
108
86
88
94
90
91
91
73
73
121
119
104
89
107
99
92
39
36
47
36
41
27
39
106 2.8
104 2.8
99 4.8
96 4.0
92 2.0
91 3.3
91 2.5
55.4 6-15 3 16.6
54.9 6-15 3 16.2
56.6 6-14 2 16.1
55.7 6-15 2 16.3
57.4 6-15 2 15.8
56.7 6-14 2 16.0
56.0 6-16 3 16.5
88 38 90 3.0 56.5 6-14 2 15.9
90
91
90
71
76
81
66
72
64
73
81
70
67
76
86
58
72
61
58
33
32
36
42
26
24
43
31
38
33
32
42
35
35
18
46
34
30
39
89 1.5
89 3.8
89 6.0
88 3.8
87 2.0
86 1.8
86 1.3
85 2.0
84 0.5
84 5.3
84 2.0
83 7.3
83 2.8
83 2.0
81 2.5
80 1.5
80 2.5
75 3.0
72 1.5
56.2 6-14 2 15.7
56.6 6-13 3 15.9
56.1 6-16 3 16.4
55.4 6-15 2 16.2
57.1 6-16 2 16.5
56.6 6-15 2 16.6
55.1 6-14 2 15.6
57.1 6-15 2 16.2
56.0 6-12 3 16.0
56.4 6-17 2 16.5
56.0 6-16 2 15.9
55.4 6-13 3 15.7
54.7 6-15 2 15.5
56.7 6-14 3 16.0
54.2 6-15 3 15.2
55.2 6-14 3 15.5
57.8 6-15 2 16.0
57.4 6-15 2 16.0
55.7 6-14 3 15.5
Test Average ....... 131.8 101.0 81.4 35.3
L.S.D. (.05 .............. 24.7 32.7 20.2 20.1
C.V. (%) ................ 13.3 23.0 17.6 40.4
* 1= Excellent; 5= Very Poor.
-22-
TABLE15. IRRIGATED CORNHYBRID PERFORMANCE AND CHARATRISICS,
HEADLAND, ALae~mA, 1991-93*
Brand
name-hybrid
DEKALB DK
689........
Jacques 9220.
DeltapineG-4666.
Hy Performe
HS 9911....
AgraTech888.
Deltame DP
57 .0
AgriGene AG
7935.......
TerraTR180.
NorthrupKing
S86 5 1000000
Northru.......
N87 7
Cargill 9027.
Pioneer 3085.
DEKALB
DK715.....
NC+ 7507.....
Pioneer3l65...
Pioneer3l46...
ICI 8105 ........
DEKALB
DK 743.....*000
TerraTR 1167..
Dyna-Gro 5509
TerraTR700E ..
AgraTech 757 ...
NorhrnKing
N88Y1.....
Hy Performer
HS 9773.**Soo
Asgrow RX 899
Pioneer3l67.
Deltapine 4742.
ZimmiermanZ27....
Dyna-Gro 55lO
Yield Per Acre, Av.-Lodged Stalks, v 1993
3r. 2-yr. 1993 3- r 2-yr. 1993 Midsilk Test Husk"* Harvest
19-93 1992-93 1 99.493 1992-93 weigyht cover moistuire
Bu. B3u. Bu. Pct.
167
166
164
163
159
159
155
155
153
150
147
139
138
138
135
164 179 4.3
154 165 6.3
158 162 9.3
157 166 4.0
156 172 5.3
152 167 5.3
151 165 5.3
152 164 2.3
139 144 2.0
151 147 2.7
147 149 '7.7
133 128 14.7
134 113 1.3
125 130 9.3
128 129 15.0
154 158 -
153 159 -
- 153 168 -
- 151 157 -
- 134 142 -
- .- 
173 
-
- - 158 -
- - 150 -
- - 147 -
- - 147
- - 143 -
- - 136 -
- - 128 -
- - 122 -
Pct. Pct. Mo.-Da. Lb./Bu. Rating Pct.
0.5 0 6-13 56.8 3 15.0
5.0 0 6-10 56.2 2 15.0
8.5. 13.0 6-11 58.4 2 15.0
3.0 5.0 6-12 58.2 2 15.0
4.5 8.0 6-16 57.3 1 15.0
6.0 6.0 6-16 57.9 2 15.0
3.0 0 6-14 56.9 3 15.0
2.0 4.0 6-11 58.4 2 15.0
1.5 1.0 6-10 58.5 2 15.0
2.0 3.0 6-14 58.4 3 15.0
5.5 3.0 6-11 56.7 2 15.0
17.0 13.0 6-11 56.3 2 15.0
1.0 1.0 6-10 56.1 3 15.0
7.5 5.0 6-16 54.5 3 15.0
15.5 9.0 6-16 55.1 3 15.0
3.0 5.0 6-14 58.0 2 15.0
1.0 0 6-16 59.2 2 15.0
5.0 5.0 6-11 57.2 2 15.0
9.0 12.0 6-10 56.8 3 15.0
2.5 4.0 6-11 56.5 2 15.0
-9.0 6-13 56.8 1 15.0
-15.0 6-14 56.5 2 15.0
- 4.0 6-16 58.5 3 15.0
-6.0 6-11 55.2 3 15.0
-4.0 6-16 56.3 4 15.0
-2.0 6-14 56.4 3 15.0
-5.0 6-11 59.3 2 15.0
-2.0 6-16 55.3 3 15.0
-6.0 6-13 57.1 3 15.0
TestAverage
L.S.D. (.05).
C.V. (%).....*0eee
150.5
38.8
18.3
* The test received approximately 13.75 inches of irrigation water in 11 applications during the
months of June and Jul y
** 1 =Excellent; 5= Very Poor.
-23-
.16 JL W, Qe JL - e dw .01 %.f JL - .01 JL .01 ftr 46 .0' .0' A.W ' 4.0' vv V10AW &W T %0& 111%&& %00
-qr- -
-IF--- -or .
z
I 1VI1~~1 JI~VJ ,,,,,,,, 1-1,-1 7,
TABL 16. WHmM CORN HYIID 
TEsr, SotrmHERN AuLA*, 
1991-93
Yield Per Acre, Av. Lodged Stalks, Av. 
1993
Brand 3-yr. 2-yr. 
1993 3-yr. 2-yr. 1993 Midsilk 
Test Husk** Harvest
name-hybrid 1991-93 1992-93 
1991-93 1992-93 weight 
cover moisture
Bu. Bu. Bu. Pet. Pct. Pct. Mo./Da. 
Lb./Bu. Rating Pet.
DEKALB DK 689** . 155 149 
169 4.7 5.5 6.0 6-12 
57.1 2 15.0
Zimmerman Z63W ...... 153 
148 153 4.7 5.0 4.0 6-11 
58.1 1 15.0
ZimmermanZ16W...... 139 132 
135 3.3 3.0 2.0 6-10 
59.8 1 15.0
Pioneer 3281W......... 135 
128 141 2.3 3.0 3.0 
6-14 59.0 3 15.0
ZimmermanZ54W...... 131 
124 129 4.0 5.0 2.0 6-16 
57.5 2 15.0
Pioneer 3165**....... 130 
125 141 9.3 9.0 17.0 
6-16 55.9 2 15.0
Hy Performer
HS 175W.............. 125 117 119 
3.3 4.5 2.0 6-16 57.2 
2 15.0
HyPerformer
HS 165W1.......... - 145 147 
- 2.5 1.0 6-14 57.9 3 
15.0
Hy Performer
HS 185W.............. - 138 
144 - 2.0 0 6-11 59.5 
2 15.0
ZimmermanZ64W ...... -
- 158 - - 0 6-10 
58.3 1 15.0
ZimmermanZ27**..... - -
146 - - 5.0 6-14 
55.9 3 15.0
DEKALBDK
703 W .............- -
141 - - 3.0 6-13 59.6 
3 15.0
TerraTR563E .......... - - 138 
- - 12.0 6-14 58.7 2 
15.0
AsgrowRX951 ......... - -
135 - - 1.0 6-11 60.7 
2 15.0
AsgrowRX959W...... - - 134 
- - 1.0 6-11 59.7 1 
15.0
TestAverage .............. 141.9
L.S.D. (.05) ............... 32.9
C.V. (%) .................... 16.2
* Headland. The test received approximately 
13.75 inches of irrigation water in 11 applications
during the months of June and July.
** Yellow Corn Check Hybrid.
*** 1= Excellent; 5= Very Poor.
-24-
TABLE 17. EARLY CORN HYBRID TEstr, SoumTHER ALABAMA*, 1991-93
Yield Per Acre, Av. Lodged Stalks, Av. 1993
Brand 3-yr. 2-yr. 1993 3-yr. 2-yr. 1993 Midsilk 
Test Husk** Harvest
name-hybrid 1991-93 1992-93 1991-93 1992-93 
weight cover moisture
Bu. Bu. Bu. Pct. Pct. Pct. Mo./Da. Lb./Bu. Rating 
Pct.
DEKALB
DK 689***.....
Deltapine 4581.....
Deltapine G-4666.
Pioneer 3165*** .......
ZimmermanZ27.........
Pioneer 3245 .............
Pioneer3394 .............
IC1 8315 ...................
ICI 8105 ...................
Deltapine4450 ..........
ICI 8513 ...................
NC+ 5037 ................
116
107
101
99
98
98
86
TestAverage .............
L.S.D. (.05) ...............
C.V. (%) .................
138 153 0
136 149 0
126 137 0
125 137 0.3
126 133 0
130 146 0
117 124 0
128 138 -
- 137 -
- 123 -
- 122 -
- 119 -
0 0
0 0
0 0
0.5 1.0
0 0
0 0
0 0
0 0
- 1.0
- 1.0
- 0
- 0
134.7
27.5
14.2
* Fairhope.
** 1= Excellent; 5= Very Poor.
*** Standard Mid to Late Season Hybrids.
-25-
6-3
6-1
6-1
6-4
6-1
6-1
5-29
6-1
6-2
5-30
5-28
5-31
55.5 3
56.0 3
56.8 3
56.0 3
54.4 3
57.2 3
53.7 3
53.6 3
56.7 3
54.5 3
52.7 4
52.0 3
19.9
16.4
17.7
20.2
17.4
17.1
16.2
16.2
18.1
17.3
16.5
16.7
-.-- -- -1
REPORT OF PRELIMINARY TESTS
TABLE 18. CHARACTERISTICS OF CORN HYBRIDS TESTED ONE YEAR IN PRELIMINARY
TEST AT FAIRHOPE IN SOUTHERN ALABAMA, 1993
Brand Av. Yield Lodged Husk* Midsilk Test 
Harvest
name-hybrid per acre stalks cover weight moisture
Bu. Pct. Rating Mo.-Da. Lb./Bu. Pct.
Deltapine7077X ........................ 136 6.0 2 6-14 56.0 20.7
TerraTR702E ................................. 133 1.0 3 6-11 55.2 20.5
Hy Performer HS 9843 ................... 131 5.0 3 6-9 56.1 19.0
IC18100 ................................... 131 16.0 3 6-11 56.1 20.9
Pioneer 3163 .................................. 130 6.0 3 6-12 54.7 20.4
NC+ 6959 ................................ 129 8.0 3 6-9 56.4 18.9
DEKALB EXP 372 ........................ 129 8.0 3 6-10 55.0 21.5
ZimmermanZ29 ....................... 125 6.0 3 6-11 55.5 
18.9
Cargill 8527A ................................. 124 9.0 3 
6-12 56.7 19.8
AgraTech3954 .............................. 123 3.0 3 6-11 53.5 
20.9
Hy Performer HS 9944 ................. 123 12.0 3 6-13 55.0 
19.9
AsgrowRX897 .......................... 119 9.0 3 6-10 56.6 
18.8
DEKALB DK 689** ..................... 118 4.0 3 6-13 53.8 
20.9
NC+ 7665 ..................................... 118 10.0 3 
6-14 55.3 18.4
Hy Performer HS 9848 .................. 117 1.0 3 6-11 
57.0 18.7
Cargill8527 ................................ 117 7.0 
2 6-10 57.6 19.8
Northrup King N7989.................. 117 9.0 
3 6-10 56.0 18.9
NorthrupKingX751 .................... 116 15.0 3 
6-9 56.0 19.1
Deltapine6157X............................. 113 17.0 3 
6-10 55.1 19.4
Hy Performer HS 9977 .................. 111 7.0 3 
6-11 56.9 20.0
Cargill 8936 ................................ 110 5.0 3 
6-11 53.7 21.0
Pioneer3165** ............................. 110 25.0 
3 6-15 56.3 19.5
ZimmermanZ27**........................ 104 18.0 
3 6-10 55.5 18.3
AgraTech810 ..... .............. 99 3.0 
3 6-11 55.5 19.1
AsgrowRX919 ............................ 96 19.0 3 
6-10 56.5 19.9
ORO 188.................................... ... 87 22.0 
3 6-12 55.7 19.4
TestAverage .................... 117.7
L.S.D. (.05) ............................. 30.9
C.V. (%) ..................................... 18.6
* 1= Excellent; 5= Very Poor.
** Standard Hybrids for Comparison.
Lodging moderate due to several heavy thunderstorms.
-26-
VIRUS DISEASE REACTIONS OF SOME HYBRIDS IN 1993
The most prevalent virus diseases of corn in Alabama are 
maize chlorotic dwarf (MCD), caused by
the maize chlorotic dwarf virus (MCDV), and maize dwarf mosaic (MDM), caused by the maize dwarf
mosaic virus (MDMV). Discovery of MDM in the State dates back to the early 1960's, while MCD has
been recognized since 1973. Both diseases probably occur throughout Alabama; however, they generally
have been more prevalent and damaging in the northern two-thirds of the State.
Symptoms of the two diseases are similar in appearance and sometimes difficult to distinguish.
Generally, affected plants are chlorotic or discolored and may be stunted. Leaves of MDM diseased plants
show an irregular, light and dark green mosaic or mottle; the initial symptom of MCD is a fine, chlorotic
streaking over the smallest veins.
The causal viruses are spread by feeding activities of insects. MCDV is transmitted by certain
leafhoppers, and MDMV is carried by some aphids. Both viruses have similar host ranges among a variety
for wild and cultivated grasses. Johnsongrass 
is an important over-season or reservoir host 
for the viruses,
and MCD and MDM incidence and damage are high in corn fields that are heavily infested with
johnsongrass.
Use of resistant or tolerant com hybrids and the control or avoidance ofjohnsongrass-infested areas are
the most practical controls for MCD and MDM. Commercial and experimental hybrids are evaluated
yearly to identify resistant hybrids or promising sources of resistance to the diseases. Results of evaluations
of some commercial hybrids during 1993 are summarized in this report.
PROCEDURE
Virus disease ratings were made on entries in the corn hybrid tests at the Prattville Experiment Field,
Prattville, the Black Belt Substation, Marion Junction; the Sand Mountain Substation, Crossville; the
Tennessee Valley Substation, Belle Mina; and the Upper Coastal Plain Substation, Winfield. Plants
showing symptoms of MCD and/or MDM were counted, and data are reported as percent incidence 
of the
diseases for each hybrid.
RESULTS
Levels of MCD and MDM were insufficient for any meaningful ratings at the Prattville Experiment Field
and the Sand MOuntain Substation, and they generally were low in the tests at the other locations, tables 
19
and 20. Incidence for MCD across all the tests ranged from 0 to 26.1%, and averaged 
2.25%; levels of
MDM ranged from 0 to 2.0%, and averaged 0.30%. Several hybrids at all 
locations showed no symptoms
of either disease.
-27-
Although virus disease incidence was generally low, hybrids showing relatively 
greater resistance or
tolerance were apparent at all locations. Presumably, 
hybrids would retain their relative ranking under
conditions of higher incidence of the diseases. When selecting a 
hybrid, virus disease reactions should be
taken into account for areas where the diseases are known or suspected 
to occur, along with yield and
other characteristics given elsewhere in this report.
TABLE 19. INCIDENCE OF MAIZE CHLORmoTHIc DWARF VIRus 
DISsE IN REGULAR
CORN HYBRID TESTs, 1993
Brand Name-Hybrid
AgraTech 757 .........
AgraTech 888 ...................................
AgriGene 7890 .............................
AgriGene AG 7935 .......................
Cargill 8936 ...............
DEKALB DK 715 ..... ........
DEKALB DK 689 ....... ........
DEKALB DK 743 ..... ........
Deltapine 4682 ..........
Deltapine 8695 ..........
Deltapine G-4666 .......... ..............
Dyna-Gro 5509 ........ ..........
Dyna-Gro 5510....... ........
Hy Performer HS 9773 .....................
Hy Performer HS 9911 ......................
Jacques 9220 ...............................
Northrup King N8727......................
Northrup King N8811.......................
Northrup King S8645 .....................
Pioneer 3085 ................................
Pioneer 3140 ................................
Pioneer 3146 ................................
Pioneer 3154 ................................
Pioneer 3156 ...................................
Pioneer 3165 ................................
Pioneer 3167 ................................
Terra TR 1167 .................................
Terra TR 700E .................................
ICI 8105 ......................................
ICI 8120 ......................................
Zimmerman Z27 .............................
Belle Mina
Pct.
4.02
1.21
1.61
1.25
0.89
0.00
0.00
1.75
0.78
1.62
0.85
1.56
1.53
2.10
2.94
2.16
0.42
1.63
0.00
1.59
1.69
3.40
2.66
0.82
3.34
Marion Junction
Pct.
4.70
1.79
0.00
5.06
4.89
0.00
5.36
0.00
0.00
,-
0.00
26.14
10.20
1.47
3.14
0.00
1.92
11.85
0.00
2.94
0.00
7.14
0.00
1.72
-28-
Winfield
Pct.
1.75
2.08
0.00
1.50
3.48
0.00
0.00
3.71
1.12
0.98
0.97
2.85
4.95
1.17
0.52
1.16
0.00
3.07
0.38
0.60
0.00
1.69
0.68
0.91
3.52
TAB3LE 20. INCIDENCE OF MAIZE DWARF MOSAIC VIRUS DISEASE IN REGULAR
CORN HYBRID TESTs, 1993
Brand Name-Hybrid
AgraTech 757....... .........
AgraTech 888...... ..........
AgriGene 7885 ............................
AgriGene 7890 ...... .........
AgriGene AG 7935 . ............
Cargill 8936.................................
DEKALB DK 715 .. ...........
DEKALB DK 743 ....................
Deltapine 8695 ............................
Deltapine G-4666 ........................
Dyna-Gro 5509 ...... .........
Hy Performer HS 9773 ..........
Jacques 9220 ...................................
Northrup King N8727 .................
Northrup King N8811 ..................
Northrup King S8645 ..................
Pioneer 3085 ...............................
Pioneer 3140 ...................................
Pioneer 3146 .................................
Pioneer 3154 ...................................
Pioneer 3156 .............................
Pioneer 3165 ....................................
Pioneer 3167 ....................................
Terra TR 1167.................................
Terra TR 1180 ................................
Terra TR 700E ................................
IC1 8105 .......................................
ICI 8120 ........................................
Zimmerman Z27 ..............................
-29-
II 1~,
Belle Mina
Pet.
2.01
0.42
0.42
0.83
0.00
0.00
0.86
0.00
0.39
0.41
0.00
1.25
0.00
0.00
0.38
0.00
0.40
0.43
0.00
0.00
0.00
1.19
0.76
Marion Junction
Pct.
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1~ '
I
Winfield
Pct.
0.38
0.00
0.00
0.66
0.00
0.00
0.69
0.00
0.94
m
0.46
0.00
0.9400
1.21
m
0.49
0.0068
0.00
1.21
0.4900
0.68
0.00
0.0083
0.00
0.83
0.00
1.33
1.82
1.39
TABLE 21. GROWING SEASON RAINFALL, 1991-93
Montly rainfall (inches) 7-month
Test location Year Mar. Apr. May 
June July Aug. Sept. total
BelleMina .............. 1993 6.6
1992 4.8
1991 8.0
Crossville...................... 1993 4.5
1992 4.2
1991 5.6
Winfield .................... 1993 5.5
1992 3.9
1991 4.8
Tallassee ...................... 1993 6.3
1992 4.2
1991 7.5
Shorter ................... 1993 6.5
1992 3.6
1991 8.8
Prattville .................... 1993 5.7
1992 3.3
1991 5.5
MarionJunction ............ 1993 5.3
1992 3.1
1991 3.8
Camden ....................... 1993 7.3
1992 2.9
1991 6.9
Monroeville ................ 1993 6.2
1992 4.2
1991 7.2
Brewton .................... 1993 8.8
1992 3.9
1991 5.7
Fairhope.................... 1993 7.3
1992 2.9
1991 4.9
Headland .................. 1993 8.5
1992 7.5
1991 9.4
3.0 4.7
1.8 2.3
9.0 9.5
3.9 4.4
2.2 2.1
6.2 4.9
2.6 6.1
1.5 1.1
14.8 15.0
3.2 2.3
2.8 0.7
3.1 4.3
2.5 2.9
2.8 1.7
3.4 4.8
2.9 2.3
3.9 1.7
5.1 11.7
2.9 3.1
3.2 1.7
6.1 8.1
3.4 2.3
2.8 1.4
6.8 11.2
3.1 3.4
3.2 2.2
5.5 12.4
2.1 4.2
3.4 2.2
5.0 11.9
2.6 5.8
2.7 2.4
9.1 13.8
1.6 1.3
0.6 2.5
3.3 8.8
3.0 2.6 5.5 5.3 30.7
9.0 6.3 4.3 5.2 33.7
1.8 2.1 2.0 3.7 36.1
0.8 2.3 4.2 1.8 21.9
5.7 5.5 4.5 4.3 28.5
5.5 2.9 3.1 3.2 31.4
8.6 0.7 3.7 4.0 31.2
4.5 8.4 5.2 2.3 26.9
4.5 1.9 2.9 3.1 47.0
3.5 1.6 5.5 2.0 24.4
4.1 5.1 2.8 2.7 22.4
4.2 9.0 4.3 2.5 34.9
6.3
3.4
6.4
0.6 5.9 2.8 27.5
7.4 5.1 2.9 26.9
2.7 3.8 1.8 31.7
2.2 2.1 6.4 0.9 22.5
4.1 6.1 3.0 2.4 24.5
5.4 3.8 2.9 2.6 37.0
1.4 2.3 6.8 3.7 25.5
3.8 5.5 2.7 4.2 24.2
3.3 4.3 3.9 2.9 32.4
3.0 5.6 3.2 4.6 29.4
6.4 5.9 4.7 4.0 28.1
2.8 5.6 1.9 2.8 38.0
2.9
8.5
5.7
8.2 7.0 1.3 32.1
5.8 11.6 2.6 38.1
6.9 6.8 2.0 46.5
3.1 10.7
4.3 5.0
8.6 7.0
3.8 8.3 41.0
7.7 6.4 32.9
3.6 2.4 45.2
3.4 8.1 7.6 5.0 39.8
4.6 5.0 6.2 1.4 25.2
5.9 8.6 6.7 3.1 52.1
1.7 5.3 1.5 4.8 24.7
3.8 7.4 4.9 0.4 27.1
3.1 5.8 5.6 2.7 38.7
-30-
~ i
TABLE 22. SOIL TYPE~S FOR CORN TmAis,1993
Test location
Belle Mina................. .............
Crossvlle...........................000
Winfleld............................0 0*00**00*000*0
Tallassee..............
Shorer........................
Prattville..............
MarionJunction.......................oes*0000000000090
Camden..............
Monroeville.............
Brewton..............
Fairhope............................900*00 00*00*0
Decatursilt loam
Wynnville fine sandy loam
Savannah loam
Cahaba loamy sand
Norfolk sandy loam
Lucedale fine sandy loam
Vaiden
Forkland fine sandy loam
Lucedale loam
Benndale fine sandy loam
Dothan sandy loam
Malbis fine sandy loam
-31-
Soil type
Seed Company
AgraTech Seed, Inc.
5559 N. 500 W.
McCordsville, IN 46055
Asgrow Seed Co.
7000 Portage Road
Kalamazoo, MI 49001
Cargill Hybrid Seeds
Box 5645
Minneapolis, MN 55440
DEKALB Plant Genetics
3100 Sycamore Road
DeKalb, IL 60115
Delta and Pine Land Co.
P. 0. Box 157
Scott, MS 38772
Dixie Ag. Supply
P. 0. Box 534
Athens, AL 35611
Hy Performer Seed Co.
6075 Poplar Ave.
Memphis, TN 38119
SOURCE OF 1993 CORN HYBRID TEsr 
SEED
Brand Seed Company
AgraTech NC + Hybrid
Box 4408
Lincoln, NE 68504
Asgrow Northrup King Co.
705 Woodbridge Dr.
Somerville, TN 367068
Cargill 
Mycogen Plant 
Sciences
624 27th Street
Lubbock, TX 79404
DEKALB Pioneer Hi-Bred Int.
1000 W. Jefferson St.
Tipton, IN 46072
Deltapine Terra International, Inc.
600 Fourth Street
Sioux City, IA 51101
Dyna-Gro ICI Seeds
P.O. Box 8127
Dothan, AL 36304
Hy Performer Aimmerman Hybrids, 
Inc
5147 W. Franklin Rd.
Evansville, IN 47711
Brand
NC+
Northrup King
Jacques
ORO
AgriGene
Pioneer
Terra
ICI
Zimmerman
-32-