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:
Evaluation of Corn Hybrids for Silage, 2003, Irrigated
Company or Hybrid Maturity Forage Yield Dry Grain Plant 2-Yr Avg
Dry Forage
Brand Name   Name Class   Dry Green   Matter Portion Population Yield
tons/acre % % no. tons/acre
Short and Mid-Season
DeKalb DKC69-71(RR/YGCB) M 11.6 25.3 46.0 . 24858 .
Pioneer 32D99 S 10.2 26.8 38.2 . 24463 .
NK 1851W S 9.3 25.6 36.3 . 24542 8.9
Croplan Genetics 827RR S 9.0 21.6 41.4 . 24542 8.7
Pioneer 33J56 S 8.8 22.8 37.9 . 24936 .
Garst 8230IT M 8.7 22.1 39.7 . 25331 .
DeKalb DKC67-60(RR) S 8.6 23.1 37.4 . 24226 .
Croplan Genetics 780RR/Bt M 8.6 19.4 44.7 . 24700 .
Dyna-Gro 58K22 S 8.5 22.0 38.8 . 23832 .
Croplan Genetics 895Bt M 8.4 21.4 39.1 . 24305 .
Southern States SS842RR M 8.3 22.0 37.4 . 25094 9.0
Croplan Genetics DS822RR M 8.3 22.9 35.9 . 23911 8.2
Garst 8288 M 8.2 18.0 45.7 . 23043 8.1
Greenwood 780 M 8.2 21.6 37.8 . 24305 8.7
Dyna-Gro 58K56 M 8.2 22.0 37.1 . 23990 .
NK N 83-N5 M 7.8 20.2 38.5 . 23910 8.5
Croplan Genetics DS830 M 7.5 20.4 36.8 . 24621 .
Average   8.7 1 22.2 39.3 . 24389 8.6
LSD at 10% Level 1.6 3.0 4.7  N.S.2  N.S.
Std. Err. of Entry Mean 0.7 1.3 2.0 665 0.4
Full-Season
Pioneer 30F33 F 10.3 23.8 43.1 . 24779 9.7
Greenwood 865 F 9.5 22.1 43.0 . 23201 .
Greenwood 863 F 9.3 21.2 44.2 . 24226 .
NK N91-R9 F 9.2 15.8 58.3 . 25883 9.9
Greenwood 835 F 8.1 16.2 50.1 . 21386 8.6
Average   9.3 3 19.8 47.7 . 23895 9.4
LSD at 10% Level 0.8 1.7 2.4 1085  N.S.
Std. Err. of Entry Mean     0.3 0.7   1.0   430 0.2
1.  CV = 15.6%, and df for EMS = 48.
2.  The F-test indicated no statistical differences at the alpha = .10 probability level; therefore an LSD value was
     not calculated.
3.  CV = 7.2%, and df for EMS = 12.
Bolding indicates entries yielding equal to highest yielding entry within a column based on Fisher's protected
LSD (P = 0.10).
Planted: April 2, 2003.
Harvested: Short and Mid-Season:  July 15, 2003.
Full-Season:  July 28, 2003.
Seeding Rate: 26,000 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.