Evaluations of Corn Hybrids in Alabama, 2008 Agronomy and Soils Departmental Series No. 295 Alabama Agricultural Experiment Station Richard Guthrie, Director Auburn University, Auburn, Alabama, November 2008 Printed in cooperation with the Alabama Cooperative Extension System (Alabama A&M University and Auburn University) 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, Tennessee Valley Research and Extension Center; Tony Dawkins and Joyce Ducar, Sand Mountain Research and Extension Center; Don Moore, Prattville Research Unit; Bobby Durbin, E.V. Smith Research Center; Randy Akridge, Brewton Research Unit; Larry Wells and Brian Gamble, Wiregrass Research and Extension Center; Ronnie McDaniel, Malcomb Pegues and Jarrod Jones, Gulf Coast Research and Extension Center. ACKNOWLEDGMENTS 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 Introduction ...................................................................................................................................................4 Table 1. Locations and Cultural Practices for the 2008 Corn Hybrid Tests ...........................................6 Table of ConTenTs norThern alabama Table 2. Two- and Three-year Yield and Lodging Averages for Corn in Northern Alabama, 2006-2008 ...................................................................................................................................7 Table 3. 2008 Yield of Corn Hybrids by Location and Regional Averages of Hybrid Characteristics in Northern Alabama ..................................................................................................................8 Table 4. Irrigated Corn Hybrid Performance and Characteristics, Belle Mina, Alabama, 2008 .............9 CenTral alabama Table 5. One, Two- and Three-year Yield and Lodging Averages for Corn at Prattville in Central Alabama, 2006-2008 ...................................................................................................11 Hybrid Test at Shorter in Central Alabama, 2006-2008 ..........................................................12 Table 6. One, Two- and Three-year Yield and Lodging Averages for the No-Till Early Corn souTh alabama Table 7. Two- and Three-year Yield and Lodging Averages for Corn in Southern Alabama, 2006-2008 .................................................................................................................................13 Table 8. Yield of Corn Hybrids by Location and Regional Averages of Hybrid Characteristics in Southern Alabama, 2008 ......................................................................................................14 Table 9. Irrigated Corn Hybrid Performance and Characteristics, Headland, Alabama, 2006-2008 ....15 rainfall, soil Types and seed sourCes Table 10. Growing Season Rainfall, 2006-2008 ......................................................................................16 Sources of 2008 Corn Hybrid Test Seed ................................................................................................17 Table 11. Soil Types for Corn Trials, 2008 ..............................................................................................17 4 ALABAMA AGRICULTURAL EXPERIMENT STATION eValuaTion of Corn hybrids in alabama K.M. Glass and E. van Santen Agricultural Program Associate and Professor Department of Agronomy and Soils, Auburn University, AL 36849 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. The Regular Corn Hybrid Test is conducted at two locations in the northern region, one location in the central region and three locations in the southern region. In addition, a regular corn hybrid test is irrigated at Belle Mina and Headland. Locations and cultural practices for all tests are given in Table 1. inTroduCTion 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 25,000 plants per acre with a seeding rate of 28,000 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. eXperimenTal proCedures All test were conducted in randomized complete block designs and analyzed accordingly. It is important to keep in mind that genotype x environment interaction is common in multi-year and multi-location mean. This interaction usually is an indication that the relative rankings of varieties change from one environment to the next. Thus, one cannot draw widespread conclusions if the interaction is significant. sTaTisTiCal analysis 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. inTerpreTaTion of daTa EVALUATIONS OF CORN HYBRIDS IN ALABAMA 2008 5 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 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 10) and soil types (Table 11) are provided. This information also serves as a guide for assessing conditions to which results may be extrapolated. 6 ALABAMA AGRICULTURAL EXPERIMENT STATION Table 1. loCaTions and CulTural praCTiCes for The 2008 Corn hybrid Trials Planting Location norThern alabama Tennessee Valley Res. and Ext. Ctr. (Belle Mina) Regular test (non-irrigated) Regular test (irrigated) Regular test CenTral alabama E.V. Smith Research Center (Shorter) No-Till Early corn test March 27 March 27 souThern alabama Brewton Experiment Field (Brewton) March 28 Wiregrass Res. and Ext. Ctr. (Headland) Regular test (non-irrigated) Regular test (irrigated) Regular test † Nitrogen Rate† lbs/ac Plant pop. seeds/ac Date harvested Herbicides used date April 8 April 8 April 2 175 200 120 25,000 30,000 25,000 September 3 September 3 September 5 Atrazine/Dual Atrazine/Dual Atrazine/Dual Sand Mountain Res. and Ext. Ctr. (Crossville) 160 110 28,000 25,000 August 18 September 3 Atrazine/Dual Atrazine/Dual Prattville Experiment Field (Prattville) 120 120 200 150 25,000 25,000 30,000 25,000 August 30 September 2 September 3 August 18 Atrazine Atrazine/Dual Atrazine/Dual Atrazine/Dual March 26 March 26 March 27 Gulf Coast Res. and Ext. Ctr. (Fairhope) Lime, phosphorus, potassium, zinc, and sulfur were applied according to soil test recommendations. EVALUATIONS OF CORN HYBRIDS IN ALABAMA 2008 7 Table 2. TWo- and Three-year yield and lodGinG aVeraGes for yelloW Corn in norThern alabama, 2006-2008 Grain yield Brand name - hybrid Dyna-Gro 58K02 Asgrow RX715 RR/YGCB DynaGro 58K81 NK Brand N 68-B8 Southern States SS 791 CL Test Average LSD0.10 CV (%) 3-yr 2-yr ---------- bu/acre --------78 84 . 96 . 82 . 72 . 65 . 80 . 14 . 33 % stalks lodging 3-yr 2-yr ---------- % ----------2.3 1.8 . 0.9 . 1.0 . 0.8 . 1.8 . . . . . . 8 ALABAMA AGRICULTURAL EXPERIMENT STATION Table 3. 2008 yield of Corn hybrids by loCaTion and reGional aVeraGes of hybrid CharaCTerisTiCs in norThern alabama Belle Mina 84 78 86 84 85 83 82 80 76 84 85 79 78 78 74 80 69 80 74 72 65 75 75 73 67 70 63 74 64 68 51 47 42 74 26 39 Crossville 83 88 79 77 76 77 78 79 81 72 71 72 71 70 73 68 78 66 71 71 77 65 66 65 70 64 69 57 65 61 67 65 45 71 11 17 2008 regional averages TestMid- Husk Yield Lodging weight silk cover -- % -lb/bu mo-day Brand name - hybrid DynaGro CX 07610 Croplan Genetics 6986 VT3 Croplan Genetics 7131 VT3 NK Brand NX 7976 (CB/LL) Dekalb NE 6458 (YGCB) NK Brand N78N-GT/CB/LL DynaGro 57B90 Dekalb DKC 67-23 (RR2/YGCB) Dekalb NE 6640 (YGCB) Dekalb DKC 63-42 (VT3) Asgrow RX715 RR/YGCB Croplan Genetics 6831 VT3 Croplan Genetics 8702 RH Croplan Genetics 6150 VT3 Croplan Genetics 6331 VT3 Croplan Genetics 5892 VT3 Garst 82R45 GT Croplan Genetics 751 RR2/Bt Croplan Genetics 851RR2/BT NK Brand N 68-B8 Southern States SS 777 VT3 Dyna-Gro 58K02 Southern States SS 775 RR2 Golden Acres 27Z07 NK Brand N77P-3000 GT Dekalb DKC 66-23 (RR2/YGCB) Croplan Genetics 6631 VT3 Croplan Genetics 7505 VT3 Croplan Genetics 9850 RB Croplan Genetics 6425 VT3 Golden Acres 26Z17 DynaGro 58K81 Southern States SS 791 CL Test Average LSD0.10 CV (%) Harvest moisture -- % -- ---------- bu/acre ----------- 84 83 82 81 80 80 80 79 79 78 78 75 75 74 74 74 73 73 72 72 71 70 70 69 68 67 66 66 65 64 59 56 43 72 8 17 1.4 1.3 2.0 0.8 2.6 0.6 2.6 2.6 1.1 3.3 1.4 5.3 1.9 1.4 0.4 2.8 4.4 1.3 5.1 1.3 4.8 0.9 1.6 3.1 1.9 3.4 2.1 1.4 0.9 7.3 0.9 1.5 1.4 2.3 . . 55.5 57.9 56.7 56.4 55.5 55.5 55.7 57.4 56.3 53.9 54.9 56.0 54.8 57.2 55.4 55.4 55.3 55.5 54.0 54.1 55.2 53.5 55.2 54.7 55.9 56.1 55.4 57.6 55.8 55.9 57.4 55.5 57.8 . . . 6-15 6-15 6-15 6-15 6-13 6-16 6-15 6-16 6-15 6-14 6-13 6-17 6-18 6-15 6-15 6-16 6-17 6-16 6-20 6-16 6-16 6-21 6-18 6-19 6-17 6-16 6-15 6-15 6-19 6-13 6-16 6-24 6-22 . . . 2.1 2.1 1.9 2.0 2.3 2.1 2.1 2.1 2.1 2.3 2.3 2.0 2.5 2.3 2.1 2.0 2.4 2.1 2.1 2.0 1.9 2.4 2.0 2.1 2.1 2.0 2.0 2.1 2.1 2.1 2.1 2.1 2.3 . . . 12.1 13.9 13.5 13.5 12.0 17.7 13.7 14.9 16.0 11.5 12.2 13.1 14.1 14.5 12.8 12.5 15.8 14.8 15.7 11.9 13.9 16.8 13.2 15.2 13.6 13.9 12.1 15.5 19.1 12.5 15.0 16.9 16.0 . . . EVALUATIONS OF CORN HYBRIDS IN ALABAMA 2008 9 Table 4. irriGaTed Corn hybrid performanCe and CharaCTerisTiCs, belle mina, alabama, 2006-2008 Grain yield Brand name - hybrid Dyna-Gro 58K02 Asgrow RX715 RR/YGCB NK Brand N 68-B8 DynaGro 58K81 Southern States SS 791 CL Croplan Genetics 7505 VT3 Southern States SS 777 VT3 Croplan Genetics 6986 VT3 NK Brand NX 7976 (CB/LL) Garst 82R45 GT Croplan Genetics 7131 VT3 NK Brand N78N-GT/CB/LL Dekalb NE 6640 (YGCB) Dekalb DKC 63-42 (VT3) Croplan Genetics 6631 VT3 Croplan Genetics 6425 VT3 Croplan Genetics 851RR2/BT Croplan Genetics 5892 VT3 Croplan Genetics 751 RR2/Bt Croplan Genetics 6831 VT3 NK Brand N77P-3000 GT Golden Acres 26Z17 Dekalb DKC 67-23 (RR2/YGCB) DynaGro 57B90 Dekalb DKC 66-23 (RR2/YGCB) Dekalb NE 6458 (YGCB) Golden Acres 27Z07 Croplan Genetics 6331 VT3 3-yr 2-yr 2008 ------ bu/acre ------- Lodging 3-yr 4.8 . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-yr 5.6 5.3 0.6 3.0 5.8 . . . . . . . . . . . . . . . . . . . . . . . 2008 10.5 9.0 0.3 5.3 10.8 0.3 12.3 1.0 2.0 3.0 3.0 0.5 0.3 1.0 13.0 2.8 10.8 2.8 15.5 17.3 0.8 9.5 3.0 6.3 4.0 4.3 23.8 4.0 Testweight lb/bu Mid- Husk Harvest silk cover moisture mo-day -- % -- --------- % -------- 180 194 . . . . . . . . . . . . . . . . . . . . . . . . . . . 203 188 188 175 . . . . . . . . . . . . . . . . . . . . . . . 182 201 196 171 155 226 226 222 220 215 213 212 211 210 210 208 208 206 197 197 195 195 195 193 190 189 187 187 56 59 57 59 60 61 57 60 57 58 57 58 56 59 58 59 54 61 56 58 57 58 60 57 58 58 54 57 6-19 6-13 6-14 6-20 6-21 6-15 6-17 6-13 6-16 6-15 6-15 6-17 6-16 6-14 6-15 6-15 6-19 6-15 6-17 6-14 6-16 6-15 6-16 6-13 6-13 6-13 6-19 6-14 2.0 3.0 1.3 2.3 1.8 1.0 1.8 1.8 1.5 1.8 1.0 1.0 1.3 3.5 1.5 2.5 1.5 2.0 1.8 2.0 1.0 2.3 2.5 2.0 2.5 2.5 1.5 2.3 17.7 16.2 16.0 18.1 17.7 21.0 18.2 18.4 18.5 17.4 19.3 21.1 21.3 17.2 17.7 17.7 19.5 17.5 18.7 17.5 17.0 18.6 19.0 17.7 16.7 17.4 16.6 18.1 continued 10 ALABAMA AGRICULTURAL EXPERIMENT STATION ConTinued. Table 4. Grain yield Brand name - hybrid DynaGro CX 07610 Croplan Genetics 6150 VT3 Croplan Genetics 9850 RB Croplan Genetics 8702 RH Southern States SS 775 RR2 Test Average LSD0.10 CV (%) 3-yr 2-yr 2008 ------ bu/acre ------- Lodging 3-yr . . . . . 4.8 . . 2-yr . . . . . 4.1 . . 2008 7.3 0.5 3.5 6.0 29.0 6.8 . . Testweight lb/bu Mid- Husk Harvest silk cover moisture mo-day -- % -- --------- % -------- . . . . . . 1 . . . . . 18 15 187 186 180 167 153 197 35 20 57 60 58 56 57 . . . 6-13 6-15 6-19 6-18 6-17 . . . 2.0 3.0 1.0 1.3 2.0 . . . 15.4 17.0 20.7 19.2 16.3 . . . 180 190 † The 2008 irrigated test received 6.7 inches of water. EVALUATIONS OF CORN HYBRIDS IN ALABAMA 2008 11 Table 5. one, TWo- and Three-year yield and lodGinG aVeraGes for yelloW Corn aT praTTVille in CenTral alabama, 2006-2008 † The 2008 trial was lost due to drought and severe storm damage. 12 ALABAMA AGRICULTURAL EXPERIMENT STATION Table 6. one, TWo- and Three-year yield and lodGinG aVeraGes for The no-Till early Corn TesT aT shorTer in CenTral alabama, 2006-2008. Grain yield Brand name - hybrid Dyna Gro 58K40 Dekalb DKC 66-23 (RR2/YGCB) Dekalb DKC 67-23 (RR2/YGCB) Dekalb DKC 69-71 NK Brand N78N-GT/CB/LL Croplan Genetics 9009 RR Croplan Genetics 8756 RR/BT Dekalb NE 6640 (YGCB) Dekalb DKC 61-69 (VT3) Dekalb DKC 69-40 (VT3) Garst 82R45 GT Dekalb DKC 67-87 (RR2/YGCB) Dekalb NE 6458 (YGCB) NK Brand NX 7976 (CB/LL) NK Brand N77P-3000 GT NK Brand N 68-B8 Croplan Genetics 6886 VT3 Southern States SS 791 CL DynaGro 57N96 DynaGro 58K81 Southern States SS 777 VT3 Southern States SS 775 RR2 Croplan Genetics 6831 VT3 Test Average LSD0.10 CV (%) † Lodging 3-yr 2-yr † 2008 --------- % -------- 3-yr 2-yr † 2008 ---- bu/acre ----- Test- Mid- Husk Harvest weight silk cover moisture lb/bu mo-day -- % -- . . . . . . . . . . . . . . . . . . . . . . . . . . 71 58 59 60 . . . . . . . . . . . . . . . . . . . 62 9 21 120 84 88 105 119 118 116 113 105 103 102 100 99 99 98 94 92 86 85 85 82 74 70 97 16 17 . . . . . . . . . . . . . . . . . . . . . . . . . . 0.0 0.1 0.0 0.0 . . . . . . . . . . . . . . . . . . . 0.0 . . 0.0 0.3 0.0 0.0 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.0 0.3 0.0 0.3 1.0 -0.0 0.3 0.0 0.0 0.1 . . 59 58 57 60 58 61 60 59 58 61 58 59 58 58 57 57 59 59 57 60 58 58 58 . . . 1-21 1-22 1-22 1-22 1-22 1-26 1-22 1-22 1-20 1-21 1-21 1-23 1-19 1-22 1-22 1-20 1-21 1-19 1-22 1-21 1-22 1-21 1-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.7 22.7 22.6 22.6 22.9 26.0 22.2 22.0 20.1 21.3 21.7 23.6 19.7 22.3 22.2 20.7 21.1 19.3 22.8 21.8 22.8 21.8 21.9 . . . The 2007 test at Shorter was lost due to prolong drought conditions, the 2-yr averages thus represent data from 2006 and 2008. EVALUATIONS OF CORN HYBRIDS IN ALABAMA 2008 13 Table 7. TWo- and Three-year yield and lodGinG aVeraGes for yelloW Corn in souThern alabama, 2006-2008† Grain yield † Brand name - hybrid Dyna Gro 58K40 Dyna-Gro 58K02 Dekalb DKC 69-71 Croplan Genetics 851RR2/BT Dekalb DKC 66-23 (RR2/YGCB) DynaGro 58K81 Dekalb DKC 67-87 (RR2/YGCB) NK Brand N 77-P5 Southern States SS 791 CL Test Average LSD0.10 CV (%) † % stalks lodging † 3-yr 2-yr ---------- % ----------2.2 1.6 3.0 1.2 1.5 1.4 4.3 3.6 2.5 2.5 . 1.5 . 0.3 . 1.4 . 1.9 . . . . . . 3-yr 2-yr ---------- bu/acre --------98 100 98 105 97 105 91 96 81 80 . 91 . 91 . 90 . 74 93 92 5 7 14 18 Data from Headland not included due to prolonged drought during all three reported years. 14 ALABAMA AGRICULTURAL EXPERIMENT STATION Table 8. 2008 yield of Corn hybrids by loCaTion and reGional aVeraGes of hybrid CharaCTerisTiCs in souThern alabama Fairhope 137 155 132 137 125 125 121 129 121 129 135 121 129 125 135 124 126 131 122 122 121 118 120 128 20 17 2008 regional averages Brew- HeadLodg- Test- Mid- Husk ton land Yield ing weight silk cover -- % -lb/bu mo-day Brand name - hybrid Dekalb DKC 69-71 Southern States SS 775 RR2 Southern States SS 777 VT3 Croplan Genetics 8756 RR/BT Croplan Genetics 851RR2/BT Dyna-Gro 58K02 NK Brand N 77-P5 Golden Acres 26Z17 Golden Acres 27Z07 Croplan Genetics 9009 RR Dekalb NE 6458 (YGCB) Dekalb NE 6640 (YGCB) Garst 82R45 GT NK Brand N78N-GT/CB/LL Croplan Genetics 6886 VT3 Dekalb DKC 69-40 (VT3) Dyna Gro 58K40 Dekalb DKC 66-23 (RR2/YGCB) Dekalb DKC 67-87 (RR2/YGCB) Croplan Genetics 6831 VT3 Dekalb DKC 61-69 (VT3) DynaGro 58K81 Southern States SS 791 CL Test Average LSD0.10 CV (%) † Harvest moist. -- % -- ----------- bu/acre ------------ 132 113 126 115 122 121 125 113 119 111 103 116 109 112 102 113 110 102 110 106 104 100 87 112 9 9 † † † † † † † † † † † † † † † † † † † † † † † . . . 134 134 129 126 123 123 123 121 120 120 119 119 119 119 119 119 118 116 116 114 112 109 104 120 9 18 -0.0 0.1 1.3 0.0 0.5 1.1 0.4 0.1 3.5 4.6 0.1 0.3 0.3 0.1 0.1 0.5 1.6 1.1 0.3 0.8 0.3 0.5 0.3 0.8 1.0 53 52 53 53 51 56 57 53 53 54 53 52 55 56 56 55 53 56 52 53 56 56 54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 2 3 3 3 3 3 3 2 3 3 3 3 3 3 2 3 3 3 3 3 3 . . . 17.5 17.4 16.9 17.4 16.9 17.2 16.7 16.9 17.1 18.5 17.1 17.4 17.2 17.9 17.0 17.2 17.5 17.1 17.4 16.8 17.4 17.3 17.2 . . . The 2008 test at Headland was lost due to prolong drought conditions EVALUATIONS OF CORN HYBRIDS IN ALABAMA 2008 15 Table 9. irriGaTed Corn hybrid performanCe and CharaCTerisTiCs, headland, alabama, 2006-2008 Grain yield Brand name - hybrid Dyna Gro 58K40 Dekalb DKC 69-71 Dyna-Gro 58K02 Croplan Genetics 851RR2/BT Dekalb DKC 67-87 (RR2/YGCB) DynaGro 58K81 NK Brand N 77-P5 Southern States SS 791 CL Croplan Genetics 9009 RR Croplan Genetics 8756 RR/BT Golden Acres 27Z07 Dekalb NE 6640 (YGCB) Dekalb DKC 69-40 (VT3) Southern States SS 775 RR2 Garst 82R45 GT Dekalb DKC 61-69 (VT3) Croplan Genetics 6831 VT3 Golden Acres 26Z17 Southern States SS 777 VT3 NK Brand N78N-GT/CB/LL Croplan Genetics 6886 VT3 Dekalb NE 6458 (YGCB) Test Average LSD0.10 CV (%) 3-yr 183 174 173 171 . . . . . . . . . . . . . . . . . . 172 10 11 Lodging Test- Mid- Husk Harvest 2-yr 2008 3-yr 2-yr 2008 weight silk cover moisture -------- % -------lb/bu mo-day -- % -- ----- bu/acre ------ 178 163 168 163 141 150 149 146 98 . . . . . . . . . . . . . . 151 11 11 179 171 178 167 150 139 160 141 102 171 168 167 164 159 149 147 146 145 140 140 124 119 112 149 17 13 0.7 2.6 1.8 4.5 4.6 . . . . . . . . . . . . . . . . . . 2.8 . . 0.0 0.0 0.1 0.4 0.0 0.1 0.0 0.5 0.0 . . . . . . . . . . . . . . 0.1 . . 0.0 0.0 0.0 0.8 0.0 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 . . 56 56 52 51 53 51 53 53 52 58 54 52 55 57 54 53 52 54 51 52 54 53 51 . . . 6-4 6-7 6-5 6-5 6-3 6-7 6-8 6-6 6-6 6-4 6-5 6-6 6-7 6-3 6-5 6-7 6-4 6-4 6-4 6-6 6-6 6-5 6-6 . . . 1.3 1.8 2.3 2.5 2.0 2.0 1.8 1.8 2.8 2.0 3.3 2.5 1.5 1.5 2.3 2.8 2.3 2.0 2.8 2.0 2.5 3.0 2.8 . . . 13.6 13.0 12.4 11.6 12.1 12.0 12.2 11.9 12.1 15.0 12.4 11.7 12.4 12.9 12.4 12.5 12.1 12.2 11.7 11.7 12.5 12.2 12.6 . . . Dekalb DKC 66-23 (RR2/YGCB) 159 † The 2008 irrigated test received 9.1 inches of water. 16 ALABAMA AGRICULTURAL EXPERIMENT STATION Table 10. GroWinG season rainfall, 2006-2008. ---------------------------- Monthly rainfall in inches --------------------------Location Belle Mina 2008 2007 2006 Crossville 2008 2007 2006 Shorter 2008 2007 2006 Prattville 2008 2007 2006 Brewton 2008 2007 2006 Fairhope 2008 2007 2006 Headland 2008 2007 2006 2.1 1.3 0.7 4.1 7.3 1.2 0.9 0.1 4.1 3.6 1.4 2.6 4.9 5.2 2.7 10.3 3.8 3.5 1.4 4.2 4.6 27.3 23.3 19.4 4.3 0.5 0.4 5.5 3.4 6.1 9.3 1.9 3.2 3.3 6.4 1.3 5.4 7.1 5.4 8.7 5.9 4.2 7.7 6.6 5.3 44.2 31.8 25.9 3.2 1.0 2.8 5.8 11.6 2.8 4.5 1.3 7.0 9.1 3.5 2.7 6.0 6.7 3.6 12.0 6.1 8.9 2.1 6.5 4.0 42.7 36.7 31.8 6.3 1.0 5.3 5.7 2.5 2.2 4.9 0.6 3.1 3.6 1.6 0.8 4.9 2.8 3.4 9.0 2.9 2.5 1.4 1.9 3.2 35.8 13.3 20.5 3.4 3.4 3.7 5.0 2.0 1.9 2.4 0.3 3.6 4.1 0.8 1.2 4.3 7.0 2.3 10.4 2.0 4.9 0.9 2.3 3.1 30.5 17.8 20.7 5.3 1.3 2.8 3.9 4.4 6.6 4.8 0.7 3.6 1.1 1.6 2.9 0.7 4.3 1.2 8.7 3.0 1.9 1.4 4.3 5.5 25.9 19.6 24.5 3.9 1.1 2.0 4.2 4.6 4.9 4.8 1.0 4.2 3.2 1.2 1.8 2.7 3.7 2.4 5.4 1.1 2.5 0.9 1.2 3.1 25.1 13.9 20.9 Year Mar. Apr. May June July Aug. 7-month Sept. total EVALUATIONS OF CORN HYBRIDS IN ALABAMA 2008 17 Table 11. soil Types for Corn Trials, 2008. Test location North Soil type Central Belle Mina..................................................................................... Decatur silt loam Crossville ...................................................................................... Wynnville fine sandy loam Shorter ........................................................................................... Norfolk sandy loam Prattville ........................................................................................ Lucedale fine sandy loam Brewton ......................................................................................... Benndale fine sandy loam Headland ....................................................................................... Dothan sandy loam Fairhope ........................................................................................ Malbis fine sandy loam South sourCe of 2008 Corn hybrid Trial seed Seed Company Golden Acres Genetics P.O. Box 579 Buchanan Dam, TX 78609 Land O’Lakes P.O. Box 614 Midland City, AL 36350 Monsanto Company 800 N. Lindbergh Blvd. St. Louis, MO 63167 Southern States 6606 West Broad St. Richmond, VA 23260 Brand Golden Acres Seed Company Syngenta/NK Seed 13760 Appomattox Cr. Laurinburg, NC 28352 Syngenta/NK Seed 7500 Olsen Memorial Hwy. Golden Valley, MN 55427 United Agri Products 544 Pridgen Pond Rd. Kinston, AL 33453 Brand Garst/NK Brand Croplan Genetics Garst/NK Brand Dekalb Dyna-Gro SS