The Georgia Agricultural Experiment Station
College of Agricultural and Environmental Sciences
The University of Georgia

2001 Corn Performance Tests
Research Report Number 675
November 2001

Calhoun, Georgia:
Evaluation of Corn Hybrids for Silage, 2001, Irrigated
Company or Hybrid Maturity Forage Yield Dry Grain Plant 2-Yr Avg
Dry Forage
Brand Name   Name Class   Dry1 Green   Matter Portion Population Yield
tons/acre % % no. tons/acre
Short and Mid-Season
Zimmerman 1851W          S 11.6 31.3 36.9  42  25483  10.9
DeKalb DKC68-70       M 11.2 29.3 38.3  50  23523     .
Croplan Genetics 827            M 10.6 30.6 35.0  44  23740     .
AgraTech 905RR          M 10.3 26.6 38.7  46  24612     .
AgraTech 1701           M 10.3 29.5 34.7  45  25203     .
Garst/AgriPro 8215           M 10.1 31.7 31.8  45  23305     .
Pioneer 31R88          M 10.1 27.8 36.4  48  25700  10.9
Southern States SS859CL        M 10.1 28.4 35.4  49  23523    9.8
DeKalb DK 697         M   9.6 23.8 40.7  46  24394     .
Pioneer 31G98          S   9.5 27.8 34.8  50  22216     .
Pioneer 33J56          S   9.2 25.8 35.5  49  23523    9.5
NK N 8811         M   9.0 27.2 33.0  43  21780    9.6
Garst/AgriPro 8288           M   8.7 21.8 39.8  51  24974     .
Croplan Genetics 733Bt          S   7.4 21.0 35.3  51  23185     .
Average                     9.82 27.3 36.2  47  23940  10.2
LSD at 10% Level  1.6 3.4 4.2 3   N.S.3  1.1
Std. Err. of Entry Mean  0.7 1.4 1.8 1 1187  0.4
Full-Season
Southland Genetics SG1877         F 13.7 28.3 48.3  41  23087  12.6
NK N91-R9         F 12.9 26.6 48.5  44  25918  11.3
Southland Seed Co. SG1836         F 11.4 24.4 46.4  42  24313     .
Southland Seed Co. SM-135         F 10.6 24.3 44.1  41  23087     .
Southland Seed Co. SM-128         F 10.0 21.5 46.6  41  23740     .
Pioneer 30F33          F   9.6 27.4 35.0  37  22869    9.7
Greenwood 830            F   9.2 18.5 50.2  46  22861     .
AgraTech 1010RR         F   9.1 20.6 44.7  43  20691     .
Southern States SS1060         F   9.1 19.5 47.0  44  23152     .
AgraTech 1836           F   8.1 14.1 56.9  44  25209     .
Average                   10.44 22.5 46.8  42  23493  11.2
LSD at 10% Level  1.5 3.1 4.9 2   N.S.   N.S.
Std. Err. of Entry Mean      0.6 1.3   2.0 1 1227 0.7
1.  Yields calculated at 15.5% moisture.
2.  CV = 13.3%, and df for EMS = 39.
3.  The F-test indicated no statistical differences at the alpha = .10 probability level; therefore an LSD value was
     not calculated.
4.  CV = 12.0%, and df for EMS = 27.
Bolding indicates entries yielding equal to highest yielding entry within a column based on Fisher's protected
LSD (P = 0.10).
Planted: April 18, 2001.
Harvested: Short and Mid-Season:  August 9, 2001.
Full-Season:  August 20, 2001.
Seeding Rate: 31,000 seeds/acre in 30" rows.
Soil Type: Rome gravelly clay loam.
Soil Test: P = Very High, K = High, and pH = 6.0.
Fertilization: 75 lb N, 90 lb P2O5, and 180 lb K2O/acre as preplant; 150 lb N/acre as sidedress.
Previous Crop: Soybean.
Management: Subsoiled, chisel plowed, and rototilled: Aatrex and Lasso used for weed control;
irrigated 4.0 inches.
Test conducted by P.A. Rose, G. Rawls, and J. Stubbs.
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