The Georgia Agricultural Experiment Stations
College of Agricultural and Environmental Sciences
The University of Georgia
2003 Corn Performance Tests
Research Report Number 690
October 2003
Table of Contents
Quincy, Florida:
Mid and Full-Season Corn Hybrid Performance, 2003, Irrigated
Yield1
Company or
Brand Name
  Hybrid
Name
2003 3-Year
Average
  Ears/100
Plants
Ear Grain
Weight
Grain
Quality2
Grain
Moisture3
Plant
Population
Erect
Plants
--- bu/acre --- no. lb rating % no. %
Pioneer 32D99 163.6 . 99 0.42 1.3 20.5 23520 98
Greenwood 780 154.0 . 108 0.35 1.1 18.9 23599 93
DeKalb DKC69-71(RR/YGCB) 152.8 . 101 0.38 1.1 19.8 23836 95
Greenwood 863* 145.8 . 121 0.34 1.9 28.6 23599 86
Pioneer 31G66 144.7 . 107 0.35 1.1 18.1 22336 92
NK N 83-N5 138.2 147.0 99 0.35 1.4 17.8 22731 97
Croplan Genetics DS822RR 138.0 . 102 0.35 1.5 20.9 23204 94
NK N91-R9* 131.1 125.6 98 0.34 1.1 19.6 23441 93
Garst 8288 130.7 132.8 102 0.32 1.6 18.8 23599 91
Southern States SS842RR 130.6 . 100 0.34 1.3 20.2 22731 97
Vigoro V61R36 129.4 . 101 0.33 1.0 18.9 23125 98
Dyna-Gro 58K56 123.4 . 105 0.31 1.5 19.4 22652 99
Garst 8230IT 114.9 . 98 0.30 1.4 19.5 23283 95
Average   138.2 4 135.1 103 0.34 1.3 20.1 23204 94
LSD at 10% Level 17.1  N.S.5 7 0.04  N.S. 1.3 826 5
Std. Err. of Entry Mean 7.1 3.5   3 0.02 0.2 0.5 346 2
*  Full-season hybrid.
1.  Yields calculated at 15.5% moisture.
2.  Grain quality rating:  1 = excellent to 5 = poor.
3.  Grain moisture at harvest.
4.  CV = 10.3%, and df for EMS = 36.
5.  The F-test indicated no statistical differences at the alpha = .10 probability level; therefore a LSD value was not
     calculated.
Bolding indicates entries yielding equal to highest yielding entry within a column based on Fisher's protected LSD
(P = 0.10).
Planted: April 1, 2003.
Harvested: August 15, 2003.
Seeding Rate: 24,000 seeds/acre in 36" rows.
Soil Type: Dothan sandy loam.
Soil Test: P = Medium, K = Medium, and pH = 5.6.
Fertilization: 18 lb N, 54 lb P2O5, and 108 lb K2O/acre as preplant; 153 lb N/acre as sidedress.
Previous Crop: Soybean.
Management: Subsoiled and strip tilled; Aatrex, Prowl, Permit, and Accent used for weed control;
Phorate and Lorsban used for insect control; no irrigation water applied.
Test conducted by B. Kidd.