The Georgia Agricultural Experiment Stations
College of Agricultural and Environmental Sciences
The University of Georgia		 Research Report
Number 670
January, 2001
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Tifton, Georgia: Three-Year Summary of Early-Planted Soybean Performance, 1998-2000, Irrigated
    Yield1          
Company or Brand Name Variety 3-Year Average 2000 1999 1998 Maturity Plant Ht. Lodg.2 Weight of 100 Seed Seed Quality3
    ------------- bu/acre ------------- mo/day in rating gm rating
Maturity Group V         
           
AgriPro HY 574 60.2 63.2 62.6 54.7 09/21 33 1.2 . 1.6
Public Variety Caviness 55.9 53.4 61.8 52.7 09/18 31 1.0 . 1.6
Pioneer 9594 55.7 60.1 50.0 57.1 09/19 28 1.0 . 1.7
Croplan Genetics Robin-5 54.8 51.2 61.0 52.3 09/20 25 1.0 . 2.0
Delta King 5961RR 54.1 43.5 60.8 58.1 09/26 37 1.2 . 1.7
           
Public Variety Hutcheson 50.4 44.5 54.7 51.9 09/18 26 1.0 . 1.6
Public Variety Clifford 47.5 43.6 51.0 48.1 09/18 28 1.0 . 1.8
           
Average   54.14 51.4 57.4 53.6 09/20 30 1.1 . 1.7
LSD at 10% Level N.S.5 14.8 5.0 10.0 02 4 N.S.   N.S.
Std. Err. of Entry Mean 2.0 6.3 2.0 4.2 01 1 0.1   0.1
           
Maturity Group VI         
           
SGA Boggs 60.9 59.6 60.8 62.3 10/01 31 1.4 13.6 1.6
Pioneer 9692 56.6 55.3 56.0 58.5 10/04 28 1.0 14.0 1.4
Public Variety Musen 51.4 50.6 48.6 55.1 10/09 33 1.8 11.9 1.3
Public Variety Hutcheson 50.7 54.0 54.9 43.1 09/22 27 1.1 16.7 1.9
Public Variety TN 6-90 49.2 44.7 54.9 48.0 10/01 30 1.0 14.5 2.0
           
Average   53.86 52.8 55.0 53.4 10/01 30 1.3 14.1 1.6
LSD at 10% Level 6.9 7.2 7.9 6.5 03 2 N.S. 1.8 0.3
Std. Err. of Entry Mean 1.7 3.0 3.3 2.7 01 1 0.1 0.1 0.1
           
Maturity Groups VII and VIII         
           
Pioneer 97B61 55.2 52.1 58.1 55.3 10/10 35 1.2 14.8 1.7
SGA Benning 53.1 51.7 52.9 54.6 10/09 37 1.1 15.3 1.6
Univ of Ga G90-R1551E 52.4 44.9 57.1 55.3 10/17 34 1.2 13.9 1.3
Public Variety Hagood 51.9 44.8 53.3 57.6 10/17 37 1.4 14.3 1.4
SGA Prichard 51.4 51.8 49.3 53.1 10/23 37 1.5 15.3 1.4
           
NK S83-30 50.5 45.1 52.4 53.9 10/18 38 1.3 16.0 1.3
Univ of Ga G91-151 50.4 53.2 47.8 50.2 10/08 31 1.0 15.3 1.9
NK S75-55 50.3 46.7 47.7 56.5 10/08 33 1.0 16.1 1.7
AgriPro AP727 49.5 48.6 47.6 52.4 10/04 36 1.2 18.1 1.6
Public Variety Cook 49.5 37.0 54.9 56.5 10/14 35 1.2 16.5 1.7
           
Public Variety Motte 48.9 44.5 52.7 49.6 10/19 37 1.2 14.8 1.7
Public Variety Carver 48.9 43.9 54.8 48.1 10/03 30 1.0 14.1 1.6
Public Variety Maxcy 47.9 39.7 50.7 53.3 10/17 35 1.0 14.9 1.6
Univ of Ga G92-2167 45.2 33.3 48.5 53.7 10/10 39 1.4 12.6 1.3
SGA Haskell 39.7 31.0 43.4 44.8 10/10 33 1.1 15.5 1.6
           
Average   49.67 44.6 51.4 53.0 10/12 35 1.2 15.2 1.5
LSD at 10% Level 6.2 10.1 5.4 7.4 02 4 N.S. 1.5 N.S.
Std. Err. of Entry Mean 1.5 4.3 2.3 3.1 01 1 0.1 0.3 0.1
           
1. Yields calculated at 13% moisture.
2. Lodging rating: Rated 1 (all plants erect) to 5 (over 80% of plants down).
3. Seed quality rating: Rated 1 (very good) to 5 (very poor).
4. CV = 12.6% 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.
6. CV = 10.8% and df for EMS = 24.
7. CV = 10.8% and df for EMS = 84.
Bolding within each test denotes entries with yields equal to the highest yielding entry based on Fisher's protected LSD (P = 0.10).
           
Planting dates: 5/13/98, 5/12/99, and 5/11/2000.
           
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