MISSISSIPPI CORN FOR GRAIN HYBRID TRIALS, 2018

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1 MISSISSIPPI CORN FOR GRAIN HYBRID TRIALS, 2018 Information Bulletin 533 November 2018 MISSISSIPPI S OFFICIAL VARIETY TRIALS

2 TECHNICAL ADVISORY COMMITTEE Tom Allen Plant Pathologist Delta Research and Extension Center Wes Burger Associate Director Mississippi Agricultural and Forestry Experiment Station Joe Camp Industry Representative Agriliance Greg Ferguson Industry Representative Monsanto Phillip Good Producer Representative Jeff Hollowell Industry Representative CORTEVA Agriscience Erick Larson Associate Professor MSU Plant and Soil Sciences Steve Martin Associate Director MSU Extension Service Interim Department Head MSU Plant and Soil Sciences Turner Massey Producer Representative Reuben Moore Interim Associate Vice President MSU Division of Agriculture, Forestry, and Veterinary Medicine Associate Director Mississippi Agricultural and Forestry Experiment Station Charlie Stokes Area Agronomy Agent MSU Extension Service Glover Triplett Agronomist MSU Plant and Soil Sciences Joshua White Manager, Forage Variety Testing MSU Plant and Soil Sciences Paul Williams (Chair) Research Geneticist USDA Agricultural Research Service Crop Science Research Laboratory

3 NOTICE TO USER This Mississippi Agricultural and Forestry Experiment Station information bulletin is a summary of research conducted under project number MIS 1414 at locations shown on the map on the second page. It is intended for colleagues, cooperators, and sponsors. The interpretation of data presented in this report may change after additional experimentation. Information included is not to be construed as a recommendation for use or as an endorsement of a specific product by Mississippi State University or the Mississippi Agricultural and Forestry Experiment Station. This report contains data generated as part of the Mississippi Agricultural and Forestry Experiment Station research program. Joint sponsorship by the organizations listed on pages is gratefully acknowledged. Trade names of commercial products used in this report are included only for clarity and understanding. All available names (i.e., trade names, chemical names, etc.) of products used in this research project are listed on pages

4 Mississippi Corn for Grain Hybrid Trials, 2018 MAFES Official Variety Trial Contributors Brad Burgess Director, Research Support/Variety Testing Mississippi State University Jake Bullard Assistant Director, Variety Testing Mississippi State University Andy Braswell Area Extension Agent Leflore County Extension Office Sean Horton Farm Manager Delta Research and Extension Center Erick Larson Associate Extension/Research Professor MSU Plant and Soil Sciences Bisoondat Macoon Associate Professor and Interim Facilities Coordinator Brown Loam Branch Experiment Station Jason McQuirter Research Associate II Variety Testing Mississippi State University Dennis Reginelli Area Extension Agent Noxubee County Extension Office Mark Silva Extension Associate and Program Coordinator Delta Agricultural Weather Center Delta Research and Extension Center Charlie Stokes Area Agronomy Agent MSU Extension Service Joshua White Manager, Forage Variety Testing Mississippi State University MSU Plant and Soil Sciences For more information, contact Burgess at (662) ; , Recognition is given to Jason Hillhouse, research technician for the Variety Trial Program, for his assistance in packaging, planting, harvesting, and recording plot data. This publication was prepared by Dixie Albright, office associate for MAFES Research Support Units. This document was approved for publication as Information Bulletin 533 of the Mississippi Agricultural and Forestry Experiment Station. It was published by the Office of Agricultural Communications, a unit of the Mississippi State University Division of Agriculture, Forestry, and Veterinary Medicine. Copyright 2018 by Mississippi State University. All rights reserved. This publication may be copied and distributed without alteration for nonprofit educational purposes provided that credit is given to the Mississippi Agricultural and Forestry Experiment Station. Find variety trial information online at mafes.msstate.edu/variety-trials.

5 TODD WILLIAMS FARM Olive Branch ADRON FARMS Minter City xx x CHRIS AUSBORN FARM Aberdeen DELTA BRANCH Stoneville TODD HEIGLE FARM Rolling Fork BLACK BELT BRANCH Brooksville DORSEY UNRUH FARM Macon BROWN LOAM BRANCH Raymond Corn Hybrid TEST LOCATIONS

6 Mississippi Corn for Grain Hybrid Trials, 2018 PROCEDURES Trials were conducted on Experiment Station land or on grower-cooperator fields in two geographical areas in Mississippi: Area I, located in the hill region of Mississippi (one irrigated and four dryland locations); and Area II, located in the Delta region of Mississippi (three irrigated locations) (see map). Commercial seed companies were given the opportunity to enter hybrids in either Area I or Area II or both. Plots consisted of two 30-inch rows, 15 feet long. Weeds were controlled by cultivation and/or herbicides. Only herbicides currently registered for use on corn were used in these studies, with strict adherence to all label instructions. All hybrids were treated with Poncho or Cruiser for seedling insect control. Experimental design was a randomized complete block with four replications at each location. Seed of all entries were supplied by participating companies. All seed were packaged for planting at seeding rates suggested by the participating company and planted with a precision vacuum planter. Fertilizer was applied according to soil test recommendations. Plots in Area I were grown under both dryland and irrigated conditions, and plots in Area II were grown under irrigated conditions. All irrigated trials were either furrow or center-pivot irrigated, as necessary. VARIABLES MEASURED IN THE CORN HYBRID TESTS Yield: An Almaco SPC 40 plot combine was used to harvest the total area of each plot. Harvested grain was weighed, moisture was determined, and yields were converted to bushels per acre at 14% moisture. Ear Height: Ear height is the distance from the soil to the highest ear-bearing node. Harvest Population: Harvest population is a measure of the number of plants per acre, based on actual stand counts. USE OF DATA TABLES AND SUMMARY STATISTICS The yield potential of a given hybrid cannot be measured with complete accuracy. Consequently, replicate plots of all hybrids are evaluated for yield, and the yield of a given hybrid is estimated as the mean of all replicate plots of that hybrid. Yields vary somewhat from one replicate plot to another, which introduces a certain degree of error to the value. As a result, although the mean yields of some hybrids are numerically different, the two hybrids may not be significantly different from each other within the range of natural variation. That is, the ability to measure yield is not precise enough to determine what the small differences are, other than what might be observed purely by chance. The least significant difference (LSD) is an estimate of the smallest difference between two hybrids that can be declared to be the result of something other than random variation in a particular trial. Consider the following example for a given trial: Hybrid Yield A bu/a B bu/a C bu/a LSD... 7 bu/a The difference between hybrid A and hybrid B is 5 bu/a (i.e., = 5). This difference is smaller than the LSD (7 bu/a). Consequently, we would conclude that hybrid A and hybrid B have the same yield potential, since we are unable to say that the observed difference did not occur purely due to chance. However, the differ- Mississippi Agricultural and Forestry Experiment Station 1

7 ence between hybrid A and hybrid C is 9 bu/a (i.e., = 9), which is larger than the LSD (7 bu/a). We would therefore conclude that the yield potential of hybrid A is superior to that of hybrid C. The coefficient of variation (CV) is a measure of the relative precision of a given trial and is used to compare the relative precision of different trials. The CV is generally considered an estimate of the amount of unexplained variation in a given trial. This unexplained variation can be the result of variation between plots with respect to soil type, fertility, insects, diseases, moisture stress, etc. Overall, as the CV increases, the precision of a given trial decreases. The coefficient of determination (R 2 ) is another measure of the level of precision in a trial and is also used to compare the relative precision of different trials. The R 2 is a measure of the amount of variation that is explained, or accounted for, in a given trial. For example, an R 2 value of 90 percent indicates that 90 percent of the observed variation in the trial has been accounted for in the trial, with the remaining 10 percent being unaccounted for. The higher the R 2 value, the more precise the trial. The R 2 is generally considered a better measure of precision than the CV for comparison of different trials. Table corn hybrid trials location summary. Location Irrigation Soil type Planting Harvest Row date date spacing Aberdeen, Chris Ausborn Farm Not Irrigated Houston clay 3/26 8/31 30 Brooksville, Black Belt Branch Not Irrigated Brooksville silty clay 3/26 8/15 30 Macon, Dorsey Unruh Farm Irrigated Vaiden silty clay 4/6 8/28 30 Olive Branch, Todd Williams Farm Not Irrigated Collins silt loam 5/3 10/9 30 Stoneville (clay), Delta Branch Irrigated Sharkey clay 3/22 8/30 30 Stoneville (loam), Delta Branch Irrigated Bosket very fine sandy loam 3/22 8/30 30 Rolling Fork (1), Todd Heigle Farm Irrigated Commerce silty clay loam 4/12 8/23 30 Rolling Fork (2), Todd Heigle Farm Not Irrigated Commerce silty clay loam 4/12 8/23 30 Raymond, Brown Loam Branch Not Irrigated Loring silt loam 3/23 8/14 30 Minter City, Ricky Belk Farm 1 Irrigated 30 1 Excessive rainfall during spring delayed planting beyond planting window for this location. 2 Mississippi Corn for Grain Hybrid Trials, 2018

8 Table corn hybrid yield summary for dryland locations. Brand Hybrid 1 Aberdeen Brooksville Olive Branch Rolling Fork Overall avg. bu/a bu/a bu/a bu/a bu/a AgriGold A645-10VT2RIB AgriGold A647-90VT2RIB AgriGold A6544VT2RIB AgriGold A6659VT2RIB AgriGold A6572VT2RIB AgriGold A6711VT2PRO Armor Armor Armor Armor X8117 * Armor X8118 * Augusta A Augusta A Augusta A1165 * Augusta A1367 * Augusta A4463 * Augusta A4465 * Augusta A5464 * Croplan DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC Dyna Gro CX17117 * Dyna Gro D54VC Dyna Gro D57VC Dyna-Gro D55VC Dyna-Gro D58VC Local Seed AV8614VYHR Local Seed LC0877VT2P Local Seed LC1577VT2P Local Seed LC1776VT2P Local Seed LC1878VT2P Local Seed LC1987VT2P Local Seed LS1586TC Local Seed RL8430VYHR Mission Seeds A1857SS Mission Seeds MEX1508DGVT2P * MorCorn MC MorCorn MC MorCorn MC Pioneer P0805AM Progeny Ag. PGY 7118VT2P Progeny Ag. PGY 8116SS Progeny Ag. PGY EXP1814 * Progeny Ag. PGY EXP1817 * Progeny Ag. PGY 6110VT2P Progeny Ag. PGY 6119VT2P Progeny Ag. PGY 7111VT2P Progeny Ag. PGY 6116VT2P Progeny Ag. PGY 5115VT2P Terral Seed REV 23BHR Terral Seed REV 24BHR99 * Terral Seed REV 25BHR Terral Seed REV 25BHR89 * Terral Seed REV 25R Terral Seed REV 27BHR79 * Terral Seed REV 28BHR Terral Seed REV 2616PWE Mean CV LSD (0.05) R Error DF Hybrid followed by an asterisk indicates an experimental entry. Mississippi Agricultural and Forestry Experiment Station 3

9 Table 3. Two-year corn hybrid yield summary for dryland locations. Brand Hybrid Aberdeen Brooksville Olive Branch Overall avg. bu/a bu/a bu/a bu/a AgriGold A645-10VT2RIB AgriGold A6544VT2RIB AgriGold A6659VT2RIB AgriGold A6572VT2RIB AgriGold A6711VT2PRO Armor Armor Armor DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC Dyna-Gro D55VC Dyna-Gro D58VC MorCorn MC MorCorn MC Progeny Ag. PGY 8116SS Progeny Ag. PGY 6110VT2P Progeny Ag. PGY 6119VT2P Progeny Ag. PGY 7111VT2P Progeny Ag. PGY 6116VT2P Progeny Ag. PGY 5115VT2P Terral Seed REV 23BHR Terral Seed REV 25BHR Terral Seed REV 28BHR Terral Seed REV 2616PWE Mean Table 4. Three-year corn hybrid yield summary for dryland locations. Brand Hybrid Aberdeen Brooksville Olive Branch Overall avg. bu/a bu/a bu/a bu/a AgriGold A6544VT2RIB AgriGold A6659VT2RIB AgriGold A6572VT2RIB AgriGold A6711VT2PRO DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC Progeny Ag. PGY 6119VT2P Progeny Ag. PGY 6116VT2P Progeny Ag. PGY 5115VT2P Terral Seed REV 23BHR Terral Seed REV 25BHR Overall Mean Mississippi Corn for Grain Hybrid Trials, 2018

10 Table corn hybrid yield summary for irrigated locations. Brand Hybrid 1 Macon Rolling Fork Stoneville (clay) Stoneville (loam) Overall avg. bu/a bu/a bu/a bu/a bu/a AgriGold A645-10VT2RIB AgriGold A646-12STX AgriGold A647-90VT2RIB AgriGold A6544VT2RIB AgriGold A6559VT2RIB AgriGold A6572VT2RIB AgriGold A6711VT2PRO Armor Armor Armor Armor X8117 * Armor X8118 * Augusta A Augusta A Augusta A Augusta A1165 * Augusta A Augusta A4463 * Augusta A4465 * Augusta A5464 * Croplan DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC Dyna Gro CX17117 * Dyna Gro D54VC Dyna Gro D57VC Dyna-Gro D55VC Dyna-Gro D58VC Great Heart Seed HT-7244VT2P Great Heart Seed HT-7302VT2P Great Heart Seed HT-7381VT2P Great Heart Seed HT-7425DGVT2P Great Heart Seed HT-7486SS Great Heart Seed HT-7676VT2P Local Seed AV8614VYHR Local Seed LC0877VT2P Local Seed LC1577VT2P Local Seed LC1776VT2P Local Seed LC1878VT2P Local Seed LC1987VT2P Local Seed LS1586TC Local Seed RL8430VYHR Mission Seeds A1857SS Mission Seeds MEX 1308VT2P * Mission Seeds MEX 1508DGVT2P * MorCorn MC MorCorn MC MorCorn MC NK Seeds NK NK Seeds NK GT Pioneer P2089VYHR Progeny Ag PGY 8116SS Progeny Ag PGY EXP1814 * Progeny Ag PGY EXP1817 * Progeny Ag PGY 6119VT2P Progeny Ag. PGY 6116VT2P Progeny Ag. PGY 5115VT2P Continued. Mississippi Agricultural and Forestry Experiment Station 5

11 Table 5 (continued) corn hybrid yield summary for irrigated locations. Brand Hybrid 1 Macon Rolling Fork Stoneville (clay) Stoneville (loam) Overall avg. bu/a bu/a bu/a bu/a bu/a Terral Seed REV 23BHR Terral Seed REV 24BHR99 * Terral Seed REV 25BHR Terral Seed REV 25BHR89 * Terral Seed REV 25R Terral Seed REV 27BHR79 * Terral Seed REV 28BHR Terral Seed REV 2616PWE Mean CV LSD (0.05) R Error DF Hybrid followed by an asterisk indicates an experimental entry. Table 6. Two-year corn hybrid yield summary for irrigated locations. Brand Hybrid 1 Macon Rolling Fork Stoneville (clay) Stoneville (loam) Overall avg. bu/a bu/a bu/a bu/a bu/a AgriGold A645-10VT2RIB AgriGold A6544VT2RIB AgriGold A6659VT2RIB AgriGold A6572VT2RIB AgriGold A6711VT2PRO Armor Armor Armor Augusta A Augusta A Augusta A Croplan DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC Dyna-Gro D55VC Dyna-Gro D58VC Great Heart Seed HT-7302VT2P Great Heart Seed HT-7381VT2P Great Heart Seed HT-7486SS MorCorn MC MorCorn MC NK Seeds NK Pioneer P2089VYHR Progeny Ag PGY 8116SS Progeny Ag PGY 6119VT2P Progeny Ag. PGY 6116VT2P Progeny Ag. PGY 5115VT2P Terral Seed REV 23BHR Terral Seed REV 25BHR Terral Seed REV 28BHR Terral Seed REV 2616PWE Overall Mean Hybrid followed by an asterisk indicates an experimental entry. 6 Mississippi Corn for Grain Hybrid Trials, 2018

12 Table 7. Three-year corn hybrid summary for irrigated locations. Brand Hybrid 1 Macon Rolling Fork Stoneville (clay) Stoneville (loam) Overall avg. bu/a bu/a bu/a bu/a bu/a AgriGold A6544VT2RIB AgriGold A6659VT2RIB AgriGold A6572VT2RIB AgriGold A6711VT2PRO Augusta A Augusta A Croplan DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC DeKalb DKC Pioneer P2089VYHR Progeny Ag. PGY 6119VT2P Progeny Ag. PGY 6116VT2P Progeny Ag. PGY 5115VT2P Terral Seed REV 23BHR Terral Seed REV 25BHR Mean Mississippi Agricultural and Forestry Experiment Station 7

13 Crop Summary CHRIS AUSBORN FARM, ABERDEEN Corn plots were planted in late March with adequate soil moisture for germination. All plots emerged to a stand. Emergence was followed by wet conditions throughout early May. Adequate rainfall was received through June. Drier conditions were encountered in July and early August. Harvest was completed in a timely manner. Soil type Houston clay Soil ph Soil fertility..... P=M, K=M Fertilizer Preplant 300 lb/a (fall applied) Sidedress 180 lb/a (32% UAN) Herbicide Burndown 32 oz/a and 1.5 pt Preemergence 2 oz/a and Roundup 32 oz/a on March 26 Postemergence 22 oz/a and 2 qt/a on May 12 Previous crop... Soybeans Planting date... March 26 Harvest date.... August 31 CHRIS AUSBORN FARM Aberdeen Rainfall Summary Inches March April May June July August Total Mississippi Corn for Grain Hybrid Trials, 2018

14 Table 8. Results from 64 corn hybrids grown without irrigation on a Houston clay soil near Aberdeen, Monroe County, Brand Hybrid year 3-year Ear Stalk Moisture Plant Harvested name yield average average height lodging content height population bu/a bu/a bu/a in % % ft x1000 Progeny Ag. PGY 8116SS Mission Seeds A1857SS Terral Seed REV 24BHR99 * DeKalb DKC Armor DeKalb DKC AgriGold A6711VT2PRO Terral Seed REV 23BHR Terral Seed REV 28BHR AgriGold A6572VT2RIB Local Seed AV8614VYHR DeKalb DKC DeKalb DKC Progeny Ag. PGY 7118VT2P Dyna Gro CX17117 * Local Seed LC1878VT2P Progeny Ag. PGY EXP1817 * Dyna Gro D57VC Progeny Ag. PGY 5115VT2P Terral Seed REV 25BHR AgriGold A6544VT2RIB Dyna-Gro D55VC Augusta A4463 * Augusta A DeKalb DKC AgriGold A645-10VT2RIB Terral Seed REV 27BHR79 * Progeny Ag. PGY 7111VT2P Dyna-Gro D58VC Terral Seed REV 25R Augusta A1367 * DeKalb DKC Augusta A Croplan Augusta A4465 * MorCorn MC Terral Seed REV 2616PWE Progeny Ag. PGY 6116VT2P Armor X8118 * Terral Seed REV 25BHR89 * AgriGold A6659VT2RIB Progeny Ag. PGY 6119VT2P Augusta A1165 * Mission Seeds MEX1508DGVT2P * MorCorn MC DeKalb DKC Augusta A5464 * Progeny Ag. PGY EXP1814 * Pioneer P0805AM Progeny Ag. PGY 6110VT2P AgriGold A647-90VT2RIB DeKalb DKC Local Seed RL8430VYHR Armor Local Seed LC1987VT2P Armor X8117 * MorCorn MC Dyna Gro D54VC Local Seed LC1577VT2P Local Seed LC0877VT2P Local Seed LC1776VT2P Armor Local Seed LS1586TC DeKalb DKC Mean CV 11.5 LSD (0.05) 26.7 R Error DF Hybrid followed by an asterisk indicates an experimental entry. Mississippi Agricultural and Forestry Experiment Station 9

15 Crop Summary MAFES BLACK BELT BRANCH, BROOKSVILLE Corn plots were planted into a stale seedbed that had been prepared the previous fall. Soil moisture at planting was adequate for germination, and all plots emerged to a stand. A timely postemergence herbicide application was sufficient to provide good weed control throughout the season. Early planting and a few timely rains allowed for good yields at a dryland location. Harvest was completed in a timely manner without difficulty. Soil type Brooksville silty clay Soil ph Soil fertility..... P=M, K=M Fertilizer Preplant 260 lb/a (fall applied) Starter 18 gal/a (applied 2x2) on March 26 Topdress 46 lb/a (46-0-0) on March 26; and 130 lb/a (46-0-0) on May 15 Herbicide Postemergence Roundup 32 oz/a, 32 oz/a, and 3 oz/a on May 15 Previous crop... Wheat Planting date.... March 26 Harvest date.... August 15 BLACK BELT BRANCH Brooksville Rainfall Summary Inches March April May June July August Total Mississippi Corn for Grain Hybrid Trials, 2018

16 Table 9. Results from 64 corn hybrids grown without irrigation on a Brooksville silty clay soil at the MAFES Black Belt Branch, Brooksville, Brand Hybrid year 3-year Ear Stalk Moisture Plant Harvested name yield average average height lodging content height population bu/a bu/a bu/a in % % ft x1000 Mission Seeds MEX1508DGVT2P * Progeny Ag. PGY 8116SS DeKalb DKC DeKalb DKC DeKalb DKC Progeny Ag. PGY 5115VT2P DeKalb DKC DeKalb DKC AgriGold A6572VT2RIB Dyna Gro CX17117 * Terral Seed REV 27BHR79 * AgriGold A647-90VT2RIB AgriGold A6711VT2PRO Dyna-Gro D58VC Progeny Ag. PGY 6119VT2P DeKalb DKC Mission Seeds A1857SS DeKalb DKC Augusta A1165 * Progeny Ag. PGY EXP1814 * Armor DeKalb DKC MorCorn MC Progeny Ag. PGY EXP1817 * Local Seed LS1586TC Croplan Terral Seed REV 24BHR99 * Armor X8117 * MorCorn MC AgriGold A6659VT2RIB Dyna-Gro D55VC DeKalb DKC Armor X8118 * AgriGold A645-10VT2RIB Terral Seed REV 28BHR Local Seed LC1878VT2P Augusta A1367 * Local Seed LC1987VT2P Local Seed LC0877VT2P Augusta A5464 * MorCorn MC Local Seed RL8430VYHR Progeny Ag. PGY 6116VT2P Dyna Gro D57VC Armor Dyna Gro D54VC Armor Augusta A Terral Seed REV 25R Local Seed LC1577VT2P Augusta A4465 * Terral Seed REV 23BHR Local Seed AV8614VYHR AgriGold A6544VT2RIB Terral Seed REV 25BHR Terral Seed REV 25BHR89 * Pioneer P0805AM Progeny Ag. PGY 7111VT2P Progeny Ag. PGY 7118VT2P Augusta A4463 * Terral Seed REV 2616PWE Augusta A Local Seed LC1776VT2P Progeny Ag. PGY 6110VT2P Mean CV 9.2 LSD (0.05) 23.1 R Error DF Hybrid followed by an asterisk indicates an experimental entry. Mississippi Agricultural and Forestry Experiment Station 11

17 Crop Summary DORSEY UNRUH FARM, MACON Corn plots were planted in early April into a stale seedbed that had been prepared the previous fall. Soil moisture at planting was optimum for germination. All plots emerged to a good stand. The growing season was very dry beginning in mid-may and continuing through harvest. Timely irrigation was able to supply adequate soil moisture to allow for good yields. Harvest was completed in a timely manner. Soil type Vaiden silty clay Soil ph Soil fertility P=H +, K=H Fertilizer Starter 18 gal/a (applied 2x2) on April 6 Sidedress 210 lb/a (32%) on May 12 Herbicide Preemergence 32 oz/a and 2 oz/a on April 6 Postemergence 3 qt/a, 1 qt/a, and Roundup 22 oz/a on May 13 Fungicide Trevo 12.8 oz/a on June 19 Previous crop.... Soybeans Planting date.... April 6 Harvest date..... August 28 Irrigation Center-pivot irrigation on May 14 (0.5 ), June 4 (1 ), June 9 (1 ), June 16 (1 ), June 24 (1 ), July 1 (1 ), July 3 (0.5 ), July 10 (1 ), and July 29 (1 ) DORSEY UNRUH FARM Macon Rainfall Summary Inches April May June July August Total Mississippi Corn for Grain Hybrid Trials, 2018

18 Table 10. Results from 72 corn hybrids grown with center-pivot irrigation on a Vaiden silty clay soil near Macon, Noxubee County, Brand Hybrid year 3-year Ear Stalk Moisture Plant Harvested name yield average average height lodging content height population bu/a bu/a bu/a in % % ft x1000 Progeny Ag PGY EXP1817 * MorCorn MC AgriGold A6659VT2RIB Mission Seeds MEX 1508DGVT2P * AgriGold A6544VT2RIB Local Seed AV8614VYHR DeKalb DKC DeKalb DKC AgriGold A6572VT2RIB Dyna-Gro D58VC Dyna Gro D57VC DeKalb DKC Augusta A AgriGold A6711VT2PRO Mission Seeds A1857SS Croplan Terral Seed REV 27BHR DeKalb DKC Progeny Ag PGY 6119VT2P AgriGold A647-90VT2RIB Great Heart Seed HT-7425DGVT2P Progeny Ag. PGY 6116VT2P Great Heart Seed HT-7381VT2P DeKalb DKC Terral Seed REV 23BHR Progeny Ag PGY 8116SS Dyna Gro CX17117 * Dyna Gro D54VC DeKalb DKC DeKalb DKC MorCorn MC DeKalb DKC Terral Seed REV 24BHR Local Seed LS1586TC Dyna-Gro D55VC Terral Seed REV 28BHR Terral Seed REV 2616PWE Great Heart Seed HT-7676VT2P Augusta A Armor AgriGold A645-10VT2RIB Armor Armor Great Heart Seed HT-7302VT2P Terral Seed REV 25BHR Terral Seed REV 25BHR NK Seeds NK Local Seed LC0877VT2P Great Heart Seed HT-7486SS Progeny Ag. PGY 5115VT2P NK Seeds NK GT Local Seed RL8430VYHR AgriGold A646-12STX Pioneer P2089VYHR Augusta A Augusta A DeKalb DKC Augusta A Progeny Ag PGY EXP1814 * Terral Seed REV 25R Local Seed LC1987VT2P Local Seed LC1776VT2P Local Seed LC1878VT2P Great Heart Seed HT-7244VT2P Augusta A Augusta A Continued. Mississippi Agricultural and Forestry Experiment Station 13

19 Table 10 (continued). Results from 72 corn hybrids grown with center-pivot irrigation on a Vaiden silty clay soil near Macon, Noxubee County, Brand Hybrid year 3-year Ear Stalk Moisture Plant Harvested name yield average average height lodging content height population bu/a bu/a bu/a in % % ft x1000 Armor X8117 * Armor X8118 * Local Seed LC1577VT2P Augusta A MorCorn MC Mission Seeds MEX 1308VT2P * Mean CV 7.4 LSD (0.05) 23.7 R Error DF Hybrid followed by an asterisk indicates an experimental entry. 14 Mississippi Corn for Grain Hybrid Trials, 2018

20 Crop Summary TODD WILLIAMS FARM, OLIVE BRANCH April rainfall delayed planting until early May into a flat seedbed that was freshly tilled and do-alled. Soil moisture at planting was excellent for germination. All plots emerged to a stand. Limited but timely rains throughout the growing season allowed for good yields to be observed at this location. Harvest was completed without difficulties. Soil type Collins silt loam Soil ph Soil fertility..... P=H, K=H Fertilizer Preplant S-1B Starter 18 gal/a (applied 2x2) on May 3 Topdress 120 lb/a (urea + Agritain) Herbicide Preemergence 1 qt/a and Dual II Magnum at 1 qt/a Postemergence 1 qt/a, 1.2 qt/a, Dual II Magnum at 1 pt/a, and 3.2 oz/a Previous crop... Soybeans Planting date... May 3 Harvest date.... October 9 TODD WILLIAMS FARM Olive Branch Rainfall Summary Inches May June July August September October Total Mississippi Agricultural and Forestry Experiment Station 15

21 Table 11. Results from 64 corn hybrids grown without irrigation on a Collins silt loam soil near Olive Branch, DeSoto County, Brand Hybrid year 3-year Ear Stalk Moisture Plant Harvested name yield average average height lodging content height population bu/a bu/a bu/a in % % ft x1000 Croplan AgriGold A6711VT2PRO AgriGold A6572VT2RIB Progeny Ag. PGY 5115VT2P Mission Seeds A1857SS Progeny Ag. PGY 8116SS Terral Seed REV 24BHR99 * Dyna-Gro D58VC DeKalb DKC Progeny Ag. PGY EXP1814 * Mission Seeds MEX1508DGVT2P * DeKalb DKC AgriGold A6659VT2RIB DeKalb DKC DeKalb DKC Terral Seed REV 27BHR79 * Local Seed AV8614VYHR Progeny Ag. PGY 6116VT2P DeKalb DKC Progeny Ag. PGY 6119VT2P Dyna Gro CX17117 * Armor AgriGold A6544VT2RIB Augusta A4463 * Armor Progeny Ag. PGY EXP1817 * MorCorn MC AgriGold A645-10VT2RIB DeKalb DKC Dyna Gro D57VC DeKalb DKC Local Seed LS1586TC Augusta A1165 * AgriGold A647-90VT2RIB Armor X8117 * Terral Seed REV 28BHR DeKalb DKC Augusta A1367 * MorCorn MC Armor Armor X8118 * DeKalb DKC Dyna-Gro D55VC Augusta A4465 * Dyna Gro D54VC Augusta A5464 * Local Seed LC1577VT2P Pioneer P0805AM MorCorn MC Progeny Ag. PGY 7118VT2P Terral Seed REV 23BHR Terral Seed REV 25BHR Local Seed LC1878VT2P Augusta A Progeny Ag. PGY 7111VT2P Local Seed LC1987VT2P Terral Seed REV 2616PWE Local Seed LC0877VT2P Augusta A Terral Seed REV 25BHR89 * Local Seed RL8430VYHR Local Seed LC1776VT2P Terral Seed REV 25R Progeny Ag. PGY 6110VT2P Mean CV 10.3 LSD (0.05) 33.6 R Error DF Hybrid followed by an asterisk indicates an experimental entry. 16 Mississippi Corn for Grain Hybrid Trials, 2018

22 TODD HEIGLE FARM, ROLLING FORK (IRRIGATED) Crop Summary Corn plots were planted into a stale, raised seedbed that was prepared the previous fall. Soil moisture at planting was adequate for germination. All plots emerged to a good stand. Timely rainfall and irrigation supplied soil moisture throughout the season. Good yields were observed at this location. Harvest was completed in a timely manner. Soil type Commerce silty clay loam Soil ph Soil fertility..... P=H, K=H Fertilizer Starter 18 gal/a (applied 2x2) on April 12 Topdress 240 lb/a (46-0-0), applied as a split application Herbicide Preemergence Roundup 32 oz/a and 2 oz/a on April 12 Postemergence 3 oz/a, Roundup 32 oz/a, and 48 oz/a Previous crop... Corn Planting date... April 12 Harvest date.... August 23 Irrigation Furrow irrigated as needed TODD HEIGLE FARM Rolling Fork Rainfall Summary Inches April May June July August Total Mississippi Agricultural and Forestry Experiment Station 17

23 Table 12. Results from 72 corn hybrids grown with furrow irrigation on a Commerce silty clay loam soil near Rolling Fork, Brand Hybrid year 3-year Ear Stalk Moisture Plant Harvested name yield average average height lodging content height population bu/a bu/a bu/a in % % ft x1000 Progeny Ag PGY EXP1817 * Terral Seed REV 27BHR Terral Seed REV 28BHR Terral Seed REV 23BHR Augusta A MorCorn MC Local Seed AV8614VYHR Local Seed RL8430VYHR AgriGold A6659VT2RIB DeKalb DKC DeKalb DKC Terral Seed REV 25BHR AgriGold A6572VT2RIB Local Seed LS1586TC Augusta A DeKalb DKC Croplan Pioneer P2089VYHR Terral Seed REV 25BHR Great Heart Seed HT-7425DGVT2P Dyna-Gro D58VC Local Seed LC1776VT2P AgriGold A6544VT2RIB Armor X8118 * DeKalb DKC DeKalb DKC Dyna Gro D57VC Great Heart Seed HT-7676VT2P Progeny Ag PGY 6119VT2P Progeny Ag. PGY 6116VT2P Augusta A AgriGold A646-12STX Terral Seed REV 24BHR AgriGold A6711VT2PRO Progeny Ag PGY 8116SS DeKalb DKC Augusta A DeKalb DKC Dyna Gro CX17117 * Armor DeKalb DKC Armor X8117 * Augusta A DeKalb DKC MorCorn MC AgriGold A645-10VT2RIB Terral Seed REV 25R MorCorn MC Dyna-Gro D55VC Local Seed LC1878VT2P Augusta A AgriGold A647-90VT2RIB Armor NK Seeds NK GT Dyna Gro D54VC Great Heart Seed HT-7302VT2P Progeny Ag PGY EXP1814 * Mission Seeds A1857SS Terral Seed REV 2616PWE Local Seed LC1987VT2P NK Seeds NK Great Heart Seed HT-7244VT2P Augusta A Local Seed LC0877VT2P Armor Great Heart Seed HT-7486SS Continued 18 Mississippi Corn for Grain Hybrid Trials, 2018

24 Table 12 (continued). Results from 72 corn hybrids grown with furrow irrigation on a Commerce silty clay loam soil near Rolling Fork, Brand Hybrid year 3-year Ear Stalk Moisture Plant Harvested name yield average average height lodging content height population bu/a bu/a bu/a in % % ft x1000 Great Heart Seed HT-7381VT2P Augusta A Mission Seeds MEX 1508DGVT2P * Local Seed LC1577VT2P Mission Seeds MEX 1308VT2P * Progeny Ag. PGY 5115VT2P Mean CV 9.5 LSD (0.05) 28.8 R Error DF Hybrid followed by an asterisk indicates an experimental entry. Mississippi Agricultural and Forestry Experiment Station 19

25 TODD HEIGLE FARM, ROLLING FORK (NOT IRRIGATED) Crop Summary Corn plots were planted into a stale, raised seedbed that was prepared the previous fall. Soil moisture at planting was adequate for germination. All plots emerged to a good stand. Timely rainfall supplied soil moisture throughout the season. Good yields were observed at this location. Harvest was completed in a timely manner. Soil type Commerce silty clay loam Soil ph Soil fertility P=H, K=H Fertilizer Starter 18 gal/a (applied 2x2) on April 12 Topdress 240 lb/a (46-0-0), applied as a split application Herbicide Preemergence 32 oz/a and 2 oz/a on April 12 Postemergence 3 oz/a, Roundup 32 oz/a, and 48 oz/a Previous crop... Soybeans Planting date.... April 12 Harvest date.... August 23 TODD HEIGLE FARM Rolling Fork Rainfall Summary Inches April May June July August Total Mississippi Corn for Grain Hybrid Trials, 2018