Evaluations of Corn Hybrids in Alabama, 2002

Agronomy and Soils Departmental Series No. 247 Alabama Agricultural Experiment Station John Jensen, Interim Director Auburn University, Auburn, Alabama, December 2002
Printed in cooperation with the Alabama Cooperative Extension System (Alabama A&M University and Auburn University)

ACKNOWLEDGMENTS
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. Chet Norris and Ellis Burgess, Tennessee Valley Research and Extension Center; Tony Dawkins, Sand Mountain Research and Extension Center; Jimmy Holliman, Black Belt Research and Extension Center; Don Moore, Prattville Research Unit; Bobby Durbin and Steve Nightengale, E.V. Smith Research Center; Randy Akridge, Brewton Research Unit; Larry Wells and Brian Gamble, Wiregrass Research and Extension Center; Ronnie McDaniel and Malcomb Pegues, Gulf Coast Research and Extension Center.

Information contained herein is available to all persons regardless of race, color, sex, or national origin. Issued in furtherarnce of Cooperative Extension work in agriculture and home economic, Acts of May 8, and June 30, 1914, and other related acts, in cooperation with the U.S. department of Agriculture. The Alabama Cooperative Extension System (Alabama A&M University and Auburn University) offers educational programs, materials, and equal opportunity employment to all people without regard to race, color, national origin, religion, sex, age, veteran status, or disbility

TABLE OF CONTENTS
Introduction ................................................................................................................................................... 2 Table 1. Locations and Cultural Practices for the 2002 Corn Hybrid Tests ..................................................... 3

NORTHERN ALABAMA
Table 2. Two- and Three-year Yield and Lodging Averages for Corn in Northern Alabama, 2000-2002 ........... 4 Table 3. 2002 Yield of Corn Hybrids by Location and Regional Averages of Hybrid Characteristics in Northern Alabama .................................................................................................................... 5 Table 4. Early Corn Hybrid Test at Crossville in Northern Alabama, 2000-2002 ............................................ 6 Table 5. Characteristics of Corn Hybrids Tested One Year in Preliminary Test at Crossville in Northern Alabama, 2002 ........................................................................................................... 6 Table 6. Irrigated Corn Hybrid Performance and Characteristics, Belle Mina, Alabama, 2002 ......................... 7

CENTRAL ALABAMA
Table 7. Two- and Three-year Yield and Lodging Averages for Corn at Prattville in Central Alabama, 2000-2002 ................................................................................................................................... 8 Table 8. 2002 Yield of Corn Hybrids and Regional Averages of Hybrid Characteristics at Prattville in Central Alabama ...................................................................................................................... 8 Table 9. Early Corn Hybrid Test at Shorter in Central Alabama, 2000-2002 ................................................... 9 Table 10. No-Till Early Corn Hybrid Test at Shorter in Central Alabama, 2000-2002 ....................................... 9 Table 11. Characteristics of Corn Hybrids Tested One Year in Preliminary Test at Tallassee in Central Alabama, 2002 ........................................................................................................... 10 Table 12. Characteristics of Corn Hybrids Tested One Year in Irrigated Preliminary Test at Tallassee in Central Alabama, 2002 ........................................................................................................... 10

SOUTH ALABAMA
Table 13. Two- and Three-year Yield and Lodging Averages for Corn in Southern Alabama, 2000-2002 .......... 11 Table 14. Yield of Corn Hybrids by Location and Regional Averages of Hybrid Characteristics in Southern Alabama, 2002 ......................................................................................................... 12 Table 15. Irrigated Corn Hybrid Performance and Characteristics, Headland, Alabama, 2000-2002 ................. 13 Table 16. Early Corn Hybrid Test at Fairhope in Southern Alabama, 2000-2002 ............................................ 14 Table 17. Characteristics of Corn Hybrids Tested One Year in Preliminary Test at Fairhope in Southern Alabama, 2002 ......................................................................................................... 14

RAINFALL, SOIL TYPES AND SEED SOURCES
Table 18. Growing Season Rainfall, 2000-2002 .......................................................................................... 15 Table 19. Soil Types for Corn Trials, 2002 .................................................................................................. 16 Sources of 2002 Corn Hybrid Test Seed ...................................................................................................... 16

2

ALABAMA AGRICULTURAL EXPERIMENT STATION

EVALUATION OF CORN HYBRIDS IN ALABAMA
K.M. Glass1, E. van Santen2, and P.M. Mask3
1

Agricultural Program Associate., 2Professor, and 3Professor and Extension Specialist, Department of Agronomy and Soils, Auburn University, AL 36849

INTRODUCTION
Selected corn hybrids are evaluated annually by the Alabama Agricultural Experiment Station as a service to producers and industry. These tests are conducted 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 the following year. The Regular Corn Hybrid Test is conducted at two locations in the northern region, two locations in the central region and four locations in the southern region. Early yellow corn hybrids are tested at one location in each region. In addition, a regular corn hybrid test is irrigated at Belle Mina and Headland and a preliminary test is irrigated at Tallassee. Locations and cultural practices for all tests are given in Table 1.

EXPERIMENTAL PROCEDURES
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 Belle Mina, Tallassee and Headland are seeded 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 lbs) 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 disease symptoms indicate crop damage, disease ratings are compiled and published in this report.

STATISTICAL ANALYSIS
All test were conducted in randomized complete block designs. Beginning with the 2002 crop, we analyzed the trial data using a nearest neighbor analysis (NNA) adjustment of the data. This proven statistical technique uses covariance analysis to eliminate field trends utilizing the avearge residual of neighboring plots, hence nearest neighbor analysis. This results in improved precision of entry mean performance estimates.

INTERPRETATION OF DATA
In replicated experiments such as those reported here, yields from each of the four replicate plots of a particular variety 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 was conducted to determine a "least significant difference" (LSD) by comparing the differences among varieties with random variation. If the difference in yield between two hybrids is larger than the LSD, 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's vary from one location to

3 EVALUATIONS OF CORN HYBRIDS IN ALABAMA 2002

another. This is because random variation varies among locations and from year to year. The coefficient of variation (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 have been 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, differences between the highest and the lowest yield of a hybrid across several locations may be an indication of the stability of its yield under variable conditions, or what is 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 18) and soil types (Table 19) are provided. This information also serves as a guide for assessing conditions to which results may be extrapolated.

TABLE 1. LOCATIONS AND CULTURAL P RACTICES FOR THE 2002 CORN HYBRID TRIALS
Location Planting date Nitrogen Rate† lbs/ac Plant popul. seeds/ac Date harvested Herbicides used

NORTHERN ALABAMA
Tennessee Valley Res. and Ext. Ctr. (Belle Mina) Regular test (non-irrigated) March 28 Regular test (irrigated). March 28 Sand Mountain Res. and Ext. Ctr. (Crossville) Early corn test April 8 Regular test April 18 Preliminary test April 19 CENTRAL ALABAMA E.V. Smith Research Center (Shorter) Early corn test March 29 No-Till Early corn test March 29 Plant Breeding Unit (Tallassee) Preliminary test (non-irrigated) March 19 Preliminary test (irrigated) March 19 Prattville Experiment Field (Prattville) March 19 Black Belt Res. and Ext. Ctr. (Marion Junction) March 29 175 210 130 130 130 20,000 25,000 20,000 20,000 20,000 August 27 August 29 September 9 September 9 September 10 Atrazine/Dual Atrazine/Dual Atrazine/Dual Atrazine/Dual Atrazine/Dual

150 150 160 160 120 150

20,000 20,000 20,000 25,000 20,000 20,000

August 7 August 7 August 7 August 8 August 22

Atrazine/Dual Atrazine/Dual Atrazine/Dual Atrazine/Dual Atrazine/Dual

Test not harvested

SOUTHERN ALABAMA
Brewton Experiment Field (Brewton) March 19 140 20,000 August 13 Atrazine/Dual Wiregrass Res. and Ext. Ctr. (Headland) Regular test (non-irrigated) March 25 180 20,000 August 19 Atrazine Regular test (irrigated) March 25 250 25,000 August 20 Atrazine Gulf Coast Res. and Ext. Ctr. (Fairhope) Early corn test March 1 110 20,000 August 2 Atrazine/Dual Regular test March 22 110 20,000 August 2 Atrazine/Dual Preliminary test March 20 110 20,000 August 2 Atrazine/Dual † Lime, phosphorus, potassium, zinc, and sulfur were applied according to soil test recommendations.

4

ALABAMA AGRICULTURAL EXPERIMENT STATION

TABLE 2. TWO- AND T HREE -YEAR Y IELD AND LODGING AVERAGES FOR YELLOW CORN IN NORTHERN ALABAMA, 2000-2002
Brand name - hybrid SS 900 BT Dekalb DK 697 Pioneer 31R88 Pioneer 31G98 SS 859 CL Garst/AgriPro 8222IT Pioneer 32K61 Pioneer 32K64 Terral TV2140RR Croplan Genetics 1167RR Dyna-Gro 5518 RR Dekalb DKC 68-70 Dyna-Gro 5515 Terral TV2160Bt LSD 0.05 Grain yield 3-yr 2-yr ---------- bu/acre --------146 168 134 165 143 165 133 155 136 154 131 154 123 141 157 157 156 156 155 147 145 12.0 16.5 % stalks lodging 3-yr 2-yr ---------- % ----------2.1 0.3 3.7 0.5 3.6 1.0 1.6 0.7 3.9 1.3 1.7 0.7 3.3 1.1 0.5 0.8 0.6 1.1 0.2 1.3 0.5 0.4 0.5

5 EVALUATIONS OF CORN HYBRIDS IN ALABAMA 2002

TABLE 3. 2002 YIELD OF CORN HYBRIDS BY LOCATION AND REGIONAL AVERAGES OF HYBRID CHARACTERISTICS IN NORTHERN ALABAMA
Belle Mina 88 97 91 78 84 79 96 83 80 86 77 71 88 84 97 84 91 91 67 71 80 71 87 70 88 82 76 77 66 84 78 86 89 83 92 84 87 73 70 82 9.2 6.9 Crossville 206 194 197 209 201 205 184 196 195 189 198 204 186 189 176 186 179 179 203 199 189 196 180 197 178 183 188 186 196 176 182 170 167 173 162 166 155 169 170 186 18.4 6.1 2002 regional averages TestHusk Lodging weight Mid-silk cover
-- % -lb/bu mo-day

Brand name - hybrid Dyna-Gro X15617 SS 900 BT Garst/AgriPro 8288 Croplan Genetics 1167RR Croplan Genetics 721 Pioneer 32K61 Pioneer 32W86 AgraTech 755RR Pioneer 32D99 Dyna-Gro 5518 RR Terral TV2140RR Dekalb DKC69-70 (YG) Terral TV2155Bt Terral TV2160Bt Pioneer 31R88 Pioneer 34B28 SS 781CL Croplan Genetics 818BT Pioneer 31N27 Dyna-Gro 5516 RR AgraTech 733RR Dyna-Gro X15616 Pioneer 33G26 Pioneer 32K64 Terral TV2140Xn1RR SS 859 CL Garst/AgriPro 8222IT Croplan Genetics 733BT Croplan Genetics 702 Terral TV2140Xn2RR Dekalb DK 697 Terral TV23R15n SS 842RR Dekalb DKC 68-70 Pioneer 33G30 Pioneer 31G98 Pioneer 34B24 AgraTech 721BtRR Dyna-Gro 5515 Test Average LSD 0.05 CV (%)

Yield 147 145 144 143 142 142 140 139 138 137 137 137 137 137 136 135 135 135 135 135 135 134 134 133 133 132 132 132 131 130 130 128 128 128 127 125 121 121 120

Harvest moisture
-- % --

---------- bu/acre -----------

0.2 0.7 0.6 0.5 1.9 1.5 0.7 2.1 1.4 0.7 0.8 0.5 1.1 0.9 1.3 1.4 0.8 0.2 3.1 0.5 0.4 0.9 0.9 0.2 1.2 1.0 0.7 1.0 0.7 1.3 0.3 0.0 2.1 0.3 0.2 0.7 0.9 0.4 1.1

57 57 56 58 57 60 57 59 57 57 57 56 56 57 57 59 58 56 59 57 57 57 59 58 56 56 57 58 57 57 57 57 57 55 59 59 59 57 58

6-23 6-22 6-19 6-22 6-19 6-21 6-21 6-19 6-22 6-23 6-24 6-23 6-21 6-21 6-22 6-19 6-23 6-20 6-21 6-21 6-21 6-21 6-19 6-20 6-22 6-22 6-21 6-18 6-23 6-22 6-24 6-22 6-22 6-22 6-20 6-22 6-20 6-20 6-22

2 2 2 2 2 3 2 2 2 2 2 2 2 2 3 2 2 2 2 2 2 2 3 2 2 2 2 2 2 2 2 2 3 2 3 2 2 2 2

13.9 14.5 15.0 14.4 14.6 14.5 14.4 13.9 15.1 14.7 14.2 14.5 14.4 14.1 14.1 14.4 14.5 14.6 14.0 14.6 14.8 14.4 13.7 14.1 14.3 14.6 14.4 14.2 14.7 13.2 14.5 14.5 14.8 14.8 14.2 13.5 14.2 13.3 14.4

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ALABAMA AGRICULTURAL EXPERIMENT STATION

TABLE 4. EARLY CORN HYBRID TEST AT CROSSVILLE IN NORTHERN ALABAMA, 2000-2002
Grain yield
Brand name - hybrid

% stalks lodging

2002
Husk Harvest Testweight Mid-silk cover1 moisture

3-yr 2-yr 2002 ------ bu/acre ----163 169 190 188 186 186 178 216 219 230 201 202 206 217 220 221 226 227 229 234

Pioneer 33G26 Pioneer 32K61 Pioneer 33G30 Pioneer 34B28 Pioneer 34B24 Terral TV23R15n Terral TV2140RR Terral TV2140Xn1RR Terral TV2155Bt Terral TVX24R002 Terral TV2140Xn2RR Terral TV26BR10n Terral TV2160Bt Test Average LSD 0.05 CV (%)

3-yr 2-yr 2002 --------- % -------- lb/bu mo-day 4.1 1.3 2.6 60 6-22 2.3 0.7 1.5 61 6-22 0.2 0.4 61 6-22 0.6 1.1 60 6-23 0.2 0.4 60 6-23 0.4 59 6-22 4.9 58 6-24 0.3 59 6-23 0.4 60 6-22 0.7 61 6-22 0.4 58 6-22 0.0 60 6-23 0.0 60 6-23

4 3 3 4 3 3 3 3 3 2 3 3 2

-- % -13.1 13.1 13.1 13.0 13.1 13.4 12.7 13.0 13.3 13.6 13.2 13.1 13.6

166 185 219 19.8 22.5 8.7 7.4 7.5 2.4

TABLE 5. CHARACTERISTICS OF CORN HYBRIDS TESTED ONE YEAR IN PRELIMINARY TEST AT CROSSVILLE IN NORTHERN ALABAMA, 2002
Brand name - hybrid Dekalb DK687RR Asgrow RX897RR Garst 8118RR Pioneer 31R88 Garst 8230IT Croplan Genetics DS 822RR Terral TV26BR10n Croplan Genetics 747 Terral TVX24R002 Garst 8255RR Croplan Genetics 827 Croplan Genetics 671CL/BT Garst 8285RR Garst 8366 IT Test Average LSD 0.05 CV (%) Yield
bu/acre

Lodging
-- % --

Testweight
lb/bu

Husk Mid-silk
mo-day

cover 1 4 3 4 4 3 4 4 3 3 3 3 3 4 4

Harvest moisture
-- % --

221 192 180 175 167 165 163 160 158 157 156 137 135 77 150 22.7 5.4

2.8 0.6 1.1 2.7 1.0 5.0 3.9 3.2 3.1 1.4 1.2 3.4 1.7 1.7

60 60 59 60 59 59 60 61 61 59 59 59 59 59

7-1 7-3 7-1 6-30 6-30 6-30 6-30 6-29 6-30 7-1 7-2 6-29 6-30 6-30

12.6 11.8 12.1 12.1 11.8 11.7 11.6 11.5 12.5 12.5 11.4 11.9 12.3 11.7

7 EVALUATIONS OF CORN HYBRIDS IN ALABAMA 2002

TABLE 6. IRRIGATED CORN HYBRID P ERFORMANCE AND CHARACTERISTICS, BELLE MINA, ALABAMA, 2000-2002
Grain yield
Brand name - hybrid Husk Harvest Test2002 3-yr 2-yr 2002 weight Mid-silk cover1 moisture

% stalks lodging

2002

Pioneer 31G98 Dekalb DK 697 SS 900 BT SS 859 CL Pioneer 31R88 Garst/AgriPro 8222IT Pioneer 32K61 Terral TV2140RR Dyna-Gro 5518 RR Dyna-Gro 5515 Dekalb DKC 68-70 Croplan Genetics 1167RR Terral TV2160Bt Pioneer 32K64 SS 842RR AgraTech 733RR Terral TV2140Xn2RR Terral TV23R15n Pioneer 32D99 AgraTech 721BtRR Dyna-Gro X15617 Croplan Genetics 818BT Terral TV2140Xn1RR Dyna-Gro 5516 RR Terral TV2155Bt Dekalb DKC69-70 (YG) Pioneer 32W86 Garst/AgriPro 8288 AgraTech 755RR Dyna-Gro X15616 SS 781CL Croplan Genetics 702 Croplan Genetics 721 Pioneer 34B24 Pioneer 33G30 Pioneer 31N27 Pioneer 33G26 Pioneer 34B28 Croplan Genetics 733BT
Test Average LSD 0.05 CV (%)

3-yr 2-yr ------ bu/acre ----- --------- % -------- lb/bu mo-day 208 222 214 7.2 1.2 1.2 52 6-21 205 215 221 5.2 1.2 1.2 52 6-21 209 213 218 3.2 0.6 1.2 51 6-21 206 211 205 3.0 0.6 0.0 51 6-21 199 207 196 3.5 1.8 1.2 52 6-20 208 206 189 3.2 1.2 1.2 54 6-20 179 180 197 0.6 0.3 0.6 58 6-20 235 238 1.5 1.8 53 6-19 233 260 1.6 2.0 54 6-19 218 219 1.6 2.0 54 6-19 216 210 0.2 0.3 50 6-22 215 222 0.7 0.3 54 6-19 214 221 0.9 0.6 52 6-20 187 187 0.8 0.3 59 6-19 257 1.4 51 6-19 236 1.2 54 6-17 232 2.4 52 6-19 231 0.0 54 6-18 229 0.6 51 6-21 228 0.0 55 6-17 226 2.0 53 6-21 226 0.0 52 6-19 225 0.9 53 6-20 223 0.0 54 6-18 222 0.3 53 6-20 219 0.0 50 6-22 217 0.3 55 6-20 217 1.0 52 6-18 215 0.6 57 6-17 215 0.3 55 6-20 213 1.8 55 6-19 212 0.0 50 6-21 202 1.2 54 6-18 196 0.3 55 6-20 192 0.3 59 6-18 190 0.7 54 6-21 177 1.5 58 6-18 168 2.8 56 6-19 160 0.7 54 6-17
213 11.5 3.3

2 1 1 2 3 1 2 2 1 2 1 1 2 2 2 1 2 2 2 1 2 1 1 1 2 2 2 2 2 1 2 1 2 2 2 2 2 2 2

-- % -17.1 17.4 16.5 16.8 17.3 16.8 16.6 16.2 15.9 17.7 17.5 17.0 17.6 16.0 17.0 16.6 17.3 17.0 17.9 16.6 16.8 17.7 16.2 16.4 17.0 18.0 16.5 17.4 16.5 16.4 16.1 17.0 16.7 16.9 16.2 17.2 16.6 17.1 16.5

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ALABAMA AGRICULTURAL EXPERIMENT STATION

TABLE 7. TWO- AND T HREE -YEAR Y IELD AND LODGING AVERAGES FOR YELLOW CORN AT PRATTVILLE IN CENTRAL ALABAMA, 2000-2002
Grain yield
Brand name - hybrid Pioneer 31G98 Terral TV2140RR Terral TV2160Bt Dyna-Gro 5515 Croplan Genetics 1167RR Pioneer 32R25 Dyna-Gro 5516 RR Dyna-Gro 5518 RR Terral TV23R15n Terral TV2140Xn1RR Dyna-Gro X15616 Croplan Genetics 702 Terral TV2140Xn2RR Dyna-Gro X15617 Terral TV2155Bt Croplan Genetics 733BT Croplan Genetics 818BT Croplan Genetics 721 Pioneer 32D99 Test Average LSD 0.05 CV (%)

% stalks lodging
Test-

2002
Husk Harvest

3-yr 2-yr 2002 3-yr 2-yr 2002 weight Mid-silk cover 1 moisture ------ bu/acre ----- --------- % -------- lb/bu mo-day -- % -96 . . . . . . . . . . . . . . . . . . 96 116 118 114 113 113 109 96 . . . . . . . . . . . . 111 13.5 7.2 113 120 102 126 128 113 131 132 124 123 123 122 119 113 98 95 93 86 86 113 10.9 5.9 5.2 . . . . . . . . . . . . . . . . . . 5.1 11.7 6.2 4.3 4.3 13.8 2.8 . . . . . . . . . . . . 0.5 1.4 2.9 0.5 0.9 1.0 0.4 0.4 0.0 0.5 0.5 1.3 0.9 0.4 1.7 2.2 2.3 1.5 3.5 59 56 58 56 58 59 58 56 57 55 58 57 56 57 58 57 57 56 57 6-11 6-10 6-12 6-11 6-10 6-13 6-10 6-10 6-11 6-11 6-12 6-12 6-10 6-11 6-12 6-10 6-10 6-11 6-13 1 1 2 1 1 2 1 1 1 1 2 2 1 2 2 2 2 3 2 14.3 14.0 14.7 13.7 14.3 14.6 14.0 14.2 14.1 13.9 14.3 14.8 13.8 14.4 14.4 13.7 14.6 14.4 16.2

TABLE 8. 2002 YIELD OF CORN HYBRIDS AND AVERAGES OF HYBRID CHARACTERISTICS AT PRATTVILLE IN CENTRAL ALABAMA
Brand name - hybrid
Dyna-Gro 5518 RR Dyna-Gro 5516 RR Croplan Genetics 1167RR Dyna-Gro 5515 Terral TV23R15n Terral TV2140Xn1RR Dyna-Gro X15616 Croplan Genetics 702 Terral TV2140RR Terral TV2140Xn2RR Pioneer 31G98 Pioneer 32R25 Dyna-Gro X15617 Terral TV2160Bt Terral TV2155Bt Croplan Genetics 733BT Croplan Genetics 818BT Croplan Genetics 721 Pioneer 32D99 Test Average LSD 0.05 CV (%)

Yield
bu/acre 132 131 128 126 124 123 123 122 120 119 113 113 113 102 98 95 93 86 86 113 10.9 5.9

Lodging
-- % -0.4 0.4 0.9 0.5 0.0 0.5 0.5 1.3 1.4 0.9 0.5 1.0 0.4 2.9 1.7 2.2 2.3 1.5 3.5

Testweight
lb/bu 56 58 58 56 57 55 58 57 56 56 59 59 57 58 58 57 57 56 57

Husk Mid- silk
mo-day 6-10 6-10 6-10 6-11 6-11 6-11 6-12 6-12 6-10 6-10 6-11 6-13 6-11 6-12 6-12 6-10 6-10 6-11 6-13

cover1
1 1 1 1 1 1 2 2 1 1 1 2 2 2 2 2 2 3 2

Harvest moisture
-- % -14.2 14.0 14.3 13.7 14.1 13.9 14.3 14.8 14.0 13.8 14.3 14.6 14.4 14.7 14.4 13.7 14.6 14.4 16.2

9 EVALUATIONS OF CORN HYBRIDS IN ALABAMA 2002

TABLE 9. EARLY CORN HYBRID TEST AT SHORTER IN CENTRAL ALABAMA, 2000-2002
Grain yield Brand name - hybrid Pioneer 3394 Terral TV2140Xn2RR Terral TV2140RR Terral TV2140Xn1RR Terral TV2160Bt Terral TV23R15n Terral TVX24R002 Terral TV2155Bt Terral TV26BR10n Test Average LSD 0.05 CV (%) 3-yr 2-yr 2002 ------ bu/acre ----111 136 143 - 141 - 134 - 130 - 125 - 123 - 123 - 121 - 119 129 7.5 2.9 2002 Test- MidHusk Harvest 3-yr 2-yr 2002 weight silk cover1 moisture -- % ---------- % -------- lb/bu mo-day 0.0 63 6-2 10.7 0.0 59 6-4 10.6 0.0 60 6-5 10.6 0.0 59 6-5 10.2 0.0 61 6-3 10.5 0.0 61 6-3 11.0 0.0 62 6-3 11.3 0.0 61 6-3 10.7 0.0 60 6-3 11.0 % stalks lodging

TABLE 10. N O-TILL EARLY CORN HYBRID TEST AT SHORTER IN CENTRAL ALABAMA, 2002
Brand name - hybrid Pioneer 3394 Terral TV2140Xn2RR Terral TV2140RR Terral TV2160Bt Terral TV2140Xn1RR Terral TV23R15n Terral TV2155Bt Terral TV26BR10n Terral TVX24R002 Test Average LSD 0.05 CV (%) Yield bu/acre 135 131 127 126 123 122 120 115 109 123 9.6 3.7 Lodging -- % -0.0 0.9 0.5 0.5 1.3 0.0 0.0 0.0 0.0 Testweight lb/bu 63 59 59 62 59 60 62 60 62 Husk Mid-silk mo-day 6-02 6-05 6-05 6-04 6-05 6-04 6-04 6-04 6-04 cover 1 Harvest moisture -- % -10.5 9.8 9.8 10.3 10.0 10.6 10.5 10.2 10.9

10

ALABAMA AGRICULTURAL EXPERIMENT STATION

TABLE 11. CHARACTERISTICS OF CORN HYBRIDS TESTED ONE YEAR IN PRELIMINARY TEST AT TALLASSEE IN C ENTRAL ALABAMA, 2002
Testweight
lb/bu

Husk Mid-silk
mo-day

Brand name - hybrid Garst 8230IT Dekalb DK687RR Pioneer 32R25 Croplan Genetics DS 822RR Garst 8118RR Terral TVX24R002 Croplan Genetics 827 Asgrow RX897RR Terral TV26BR10n Croplan Genetics 747 Croplan Genetics 671CL/BT Test Average LSD 0.05 CV (%)

Yield
bu/acre

Lodging
-- % --

cover 1 2 1 3 2 2 2 3 1 3 4 4

Harvest moisture
-- % --

187 186 185 177 168 166 161 155 141 135 123 162 9.0 3.4

1.3 0.4 0.0 0.4 0.4 0.0 0.4 0.0 0.8 0.0 0.0

-

6-1 6-3 6-3 6-1 6-4 6-2 6-5 6-3 6-3 5-31 5-30

-

TABLE 12. C HARACTERISTICS OF IRRIGATED CORN HYBRIDS TESTED ONE YEAR IN PRELIMINARY TEST AT TALLASSEE IN CENTRAL ALABAMA, 2002
Brand name - hybrid Pioneer 32R25 Croplan Genetics DS 822RR Garst 8230IT Garst 8118RR Croplan Genetics 827 Dekalb DK687RR Terral TV26BR10n Croplan Genetics 747 Asgrow RX897RR Terral TVX24R002 Croplan Genetics 671CL/BT Test Average LSD 0.05 CV (%) Yield
bu/acre

Lodging
-- % --

Testweight
lb/bu

Husk Mid-silk
mo-day

cover 1 3 3 2 2 2 1 2 3 1 2 2

Harvest moisture
-- % --

241 219 215 205 200 197 197 190 181 180 142 197 17.5 5.5

0.0 0.0 0.0 0.4 0.0 0.0 0.4 0.0 0.0 0.4 0.0

63 62 61 61 60 64 62 61 63 65 62

6-6 6-4 6-5 6-6 6-7 6-5 6-4 6-3 6-5 6-4 6-2

10 9 10 10 9 10 10 10 9 10 10

11 EVALUATIONS OF CORN HYBRIDS IN ALABAMA 2002

TABLE 13. TWO- AND T HREE -YEAR Y IELD AND LODGING AVERAGES FOR YELLOW CORN IN SOUTHERN ALABAMA, 2000-2002
Brand name - hybrid Dekalb DK 697 Pioneer 31G98 Garst/AgriPro 8222IT Pioneer 32R25 Dekalb DKC 68-70 Dyna-Gro 5515 Terral TV2160Bt Dyna-Gro 5518 RR Terral TV2140RR Dyna-Gro 5516 RR Croplan Genetics 1167RR LSD 0.05 Grain yield 3-yr 2-yr ---------- bu/acre --------124 112 114 102 110 96 112 111 111 109 107 106 105 103 7.5 7.9 % stalks lodging 3-yr 2-yr ---------- % ----------7.2 1.8 3.1 2.0 0.6 1.3 0.9 2.0 2.3 1.3 3.1 1.9 1.0 0.7 1.0 1.4

12

ALABAMA AGRICULTURAL EXPERIMENT STATION

TABLE 14. 2002 YIELD OF CORN HYBRIDS BY LOCATION AND REGIONAL AVERAGES OF HYBRID CHARACTERISTICS IN SOUTHERN ALABAMA.
Fair- Brew- Headhope ton land Yield
----------- bu/acre ------------

2002 regional averages Husk Lodg- Testing
-- % --

Brand name - hybrid Dekalb DKC69-70 (YG) Dyna-Gro 5515 Terral TV2155Bt Terral TV2140RR Dekalb DKC 68-70 Croplan Genetics 1167RR Dyna-Gro 5518 RR Dekalb DK 697 Dyna-Gro 5516 RR Garst/AgriPro 8288 Pioneer 32R25 Terral TV2160Bt Terral TV2140Xn1RR Croplan Genetics 818BT Terral TV23R15n Croplan Genetics 721 AgraTech 755RR Terral TV2140Xn2RR AgraTech 733RR Dyna-Gro X15617 Garst/AgriPro 8222IT Dyna-Gro X15616 Garst 8285 Pioneer 32D99 AgraTech 721BtRR Croplan Genetics 702 Pioneer 31G98 Croplan Genetics 733BT Test Average LSD 0.05 CV (%)

weight Mid-silk cover1
lb/bu mo-day

Harvest moist.
-- % --

120 131 139 128 134 121 124 125 123 129 121 128 138 128 120 123 121 123 110 126 129 117 117 127 120 125 112 112 124 8.1 4.0

125 120 111 108 113 113 106 112 112 110 115 107 106 93 114 92 95 110 103 99 97 108 98 100 102 101 100 89 106 5.4 3.1

70 64 62 75 63 74 75 68 66 62 64 63 53 70 56 73 72 53 73 60 58 59 64 51 55 48 58 69 64 10.0 9.6

105 105 104 103 103 103 102 101 100 100 100 99 99 97 97 96 96 95 95 95 95 95 93 93 92 91 90 90

3.4 2.0 3.0 3.2 3.5 0.9 4.7 3.0 0.9 0.8 1.8 2.2 4.0 4.1 1.6 1.5 1.2 3.7 2.5 5.4 1.4 2.3 1.2 5.1 1.6 2.2 3.5 1.4

57 54 57 53 57 55 53 57 56 55 56 56 54 55 56 54 58 54 55 54 57 56 56 55 55 56 57 55

6-4 6-3 6-3 6-4 6-4 6-4 6-2 6-3 6-3 6-2 6-4 6-3 6-3 6-1 6-3 5-31 6-1 6-3 6-2 6-2 6-2 6-4 6-4 6-4 6-3 6-4 6-4 5-30

2 3 3 3 2 2 3 3 2 2 3 3 3 3 2 3 3 3 3 3 3 3 2 3 3 3 2 3

14.3 14.5 14.3 14.5 14.7 14.5 14.3 14.3 14.4 14.7 15.0 14.3 14.1 14.3 14.3 14.3 14.5 14.1 14.0 14.0 14.3 14.3 14.4 14.4 14.2 14.4 14.3 14.2

13 EVALUATIONS OF CORN HYBRIDS IN ALABAMA 2002

TABLE 15. IRRIGATED CORN HYBRID P ERFORMANCE AND CHARACTERISTICS, HEADLAND , ALABAMA, 2000-2002
Brand name - hybrid Dekalb DKC 68-70 Dekalb DK 697 Dekalb DKC69-70 (YG) Garst/AgriPro 8288 Croplan Genetics 818BT Dyna-Gro 5518 RR Croplan Genetics 702 Croplan Genetics 1167RR Dyna-Gro 5515 Garst/AgriPro 8222IT Dyna-Gro X15617 Dyna-Gro X15616 Terral TV2140Xn2RR Terral TV2140RR Pioneer 32D99 Garst 8285 Terral TV23R15n Pioneer 31G98 Terral TV2155Bt Terral TV2160Bt AgraTech 733RR AgraTech 755RR Pioneer 32R25 Croplan Genetics 721 Terral TV2140Xn1RR Dyna-Gro 5516 RR AgraTech 721BtRR Croplan Genetics 733BT Test Average LSD 0.05 CV (%)
Yield Lodging Test-weight Mid-silk Husk cover1 Harvest moisture

186 186 185 172 169 168 165 162 161 160 160 159 159 157 155 153 153 153 150 149 149 148 147 147 144 142 134 122 157 10.1 3.9

0.0 0.6 1.1 1.8 0.0 6.5 0.6 1.4 0.6 0.0 3.2 2.0 0.0 3.2 0.0 1.4 0.0 0.0 1.4 5.2 4.5 2.4 0.0 2.7 3.6 0.7 7.6 1.6

-

6-3 5-26 6-2 5-25 5-30 5-29 6-2 5-31 6-1 5-29 5-29 6-2 5-29 6-3 6-2 5-29 5-31 6-3 7-15 5-25 5-25 5-26 5-29 5-26 6-3 6-4 5-27 5-26

1 2 3 2 2 2 2 2 2 2 2 3 2 2 2 2 2 2 3 4 4 2 3 3 2 1 3.5 2.5

-

14

ALABAMA AGRICULTURAL EXPERIMENT STATION

TABLE 16. EARLY CORN HYBRID TEST AT F AIRHOPE IN SOUTHERN ALABAMA, 2000-2002
Grain yield
Brand name - hybrid

% stalks lodging 3-yr 2-yr 2002 --------- % -------1.1 0.6 1.1 1.1 0.6 2.7 2.7 0.6 2.2 3.3 0.6

2002
Test- Mid-silk weight Husk Harvest cover1 moisture

3-yr 2-yr 2002 ------ bu/acre ----Pioneer 3394 Terral TV2140Xn1RR Terral TV26BR10n Terral TV2160Bt Terral TV2155Bt Terral TVX24R002 Terral TV2140Xn2RR Terral TV2140RR Terral TV23R15n Test Average LSD 0.05 CV (%)
104 114 100 125 125 123 123 123 122 121 119

lb/bu 56 55 57 57 58 59 55 55 56

mo-day 5-21 5-24 5-24 5-22 5-22 5-23 5-25 5-25 5-23

4 3 3 3 3 3 3 3 2

-- % -13.4 13.2 13.4 13.5 13.5 13.8 13.2 13.0 13.4

120 7.9 3.9

TABLE 17. CHARACTERISTICS OF CORN HYBRIDS TESTED ONE YEAR IN PRELIMINARY TEST AT F AIRHOPE IN SOUTHERN A LABAMA, 2002
Brand name - hybrid Dekalb DK687RR Terral TVX24R002 Pioneer 32R25 Croplan Genetics DS 822RR Garst 8285RR Croplan Genetics 747 Garst 8230IT Terral TV26BR10n Garst 8118RR Garst 8255RR Asgrow RX897RR Croplan Genetics 827 Croplan Genetics 671CL/BT Test Average LSD 0.05 CV (%) Yield
bu/acre

Lodging
-- % --

Testweight
lb/bu

Husk Mid-silk
mo-day

cover 2 3 4 3 2 3 3 3 3 3 3 3 3

1

Harvest moisture
-- % --

132 127 123 122 118 117 116 116 114 113 107 102 102 116 11.1 5.9

0.6 0.6 1.1 1.6 1.7 0.0 2.9 1.7 2.3 2.8 1.2 0.6 1.1

57 60 58 56 57 57 54 57 56 57 57 55 57

6-1 6-1 6-1 6-9 6-1 5-30 6-1 5-31 6-2 6-1 6-1 6-3 5-28

13.6 13.8 13.5 13.1 13.3 13.4 13.2 13.4 13.2 13.2 13.2 12.9 13.1

15 EVALUATIONS OF CORN HYBRIDS IN ALABAMA 2002

TABLE 18. GROWING SEASON RAINFALL, 2000-2002.
------------------------- Monthly rainfall (inches) ---------------------Mar. Apr. May June July Aug. Sept. 7-month total

Test location

Year

Belle Mina...................... 2002 ........5 .5........... 1.5.........10.3 .........0.9 .............4.5...........1.7 .........5.3 .............. 29.7 2001 5 .8 3.9 6.4 8.8 4 .3 3.2 5.6 38.0 2000 5 .5 8.6 0.7 4.1 0 .7 2.7 1.7 24.0 Crossville .......................2002 ........7 .8........... 3.0...........4.8 .........1.9 .............4.5...........2.0 .........8.9 .............. 32.9 2001 8 .4 2.7 5.2 1.0 4 .7 4.5 3.7 30.2 2000 5 .1 7.1 1.7 4.9 0 .9 1.7 4.0 25.4 Tallassee......................... 2002 ........7 .5........... 3.7...........3.6 .........4.8 .............2.9...........1.8 .........4.3 .............. 28.6 2001 16.1 5.2 5.5 5.8 4 .2 4.7 1.0 42.5 2000 5 .5 3.6 1.7 1.6 3 .1 3.5 4.9 23.9 Shorter ..........................2002 ........6 .5........... 3.6...........2.5 .........5.6 .............2.3...........1.9 .........4.6 .............. 27.0 2001 13.8 6.0 3.6 7.1 3 .1 2.4 1.6 37.6 2000 4 .7 2.2 1.8 1.6 1 .0 2.4 3.9 17.6 Prattville........................ 2002 ........5 .8........... 1.4...........2.6 .........1.9 .............4.2...........2.2 .........6.2 .............. 24.3 2001 13.1 3.8 2.9 5.1 4 .0 9.6 2.4 40.9 2000 4 .7 2.8 0.6 2.6 2 .4 1.1 7.3 21.5 Marion Junction ...........2002 ........5 .3........... 1.0...........4.6 .........3.6 .............6.5...........4.3 .........9.1 .............. 34.4 2001 11.5 5.4 2.5 5.3 4 .1 6.6 3.7 39.1 2000 4 .2 4.3 0.8 2.7 0 .8 2.2 4.1 19.1 Brewton..........................2002 ........5 .3........... 2.2...........1.8 .......12.4 ...........12.4 ...........5.7 .......11.5 .............. 51.3 2001 16.0 3.0 1.5 9.5 4 .8 7.8 3.4 46.0 2000 3 .9 1.6 4.1 8.6 3 .4 4.4 5.5 31.5 Fairhope......................... 2002 ........4 .2........... 3.1...........2.3 .........3.4 ...........10.8 ...........5.8 .......14.8 .............. 44.4 2001 8 .7 0.3 0.6 13.8 15.7 0.1 4.7 43.9 2000 4 .1 1.1 0.7 4.2 3 .2 3.0 9.5 25.8 Headland .......................2002 ........5 .2........... 3.4...........2.9 .........3.9 .............4.1...........3.1 .........2.9 .............. 25.5 2001 12.6 2.5 2.1 11.6 3 .3 3.9 3.7 39.7 2000 3 .3 0.5 0.1 1.8 1 .3 2.6 6.1 15.7

16

ALABAMA AGRICULTURAL EXPERIMENT STATION

TABLE 19. SOIL TYPES FOR CORN TRIALS, 2002 Test location
North

Soil type

Belle Mina ................................ ................................ ................. Decatur silt loam Crossville ................................ ................................ ................... Wynnville fine sandy loam
Central

Tallassee ................................ .................................................... Cahaba loamy sand Shorter ................................ ................................ ....................... Norfolk sandy loam Prattville ................................................................ ..................... Lucedale fine sandy loam Marion Junction ................................ ................................ ......... Vaiden clay
South

Brewton ................................................................ ..................... Benndale fine sandy loam Headland ................................ .................................................... Dothan sandy loam Fairhope ................................................................ ..................... Malbis fine sandy loam

SOURCES OF 2002 CORN HYBRID TRIAL SEED Seed Company
AgraTech Seeds P.O. Box 88823 Dunwoody, GA 30356 Croplan Genetics P.O. Box 146 Blytheville, AR 72316 Garst Seed Company 761Walnut Knoll Lane Memphis, TN 38018 Monsanto Company 3100 Sycamore Road DeKalb, IL 60115

Brand
AgraTech

Seed Company
Pioneer Hi-Bred Int., Inc. 6767 Old Madison Pike Huntsville, AL 35806 Southern States Coop P.O. Box 26230 Richmond, VA 23260 Terral Seed P.O. Box 826 Lake Providence, LA 71254 UAP Southeast 25324 HSV-Brownsferry Rd Madison, AL 35756

Brand
Pioneer

Croplan Genetics

SS

Garst,

TV

Dekalb DK

Dyna-Gro