The Georgia Agricultural Experiment Stations
College of Agricultural and Environmental Sciences
The University of Georgia		 Research Report
Number 670
January, 2001
Plains, Georgia:
Roundup Ready Soybean Variety Performance, 2000, Irrigated
Company or Brand Name   Variety Yield1 Maturity Plant Height Lodging2 Weight of 100 Seed Seed Quality3 Shattering4
      bu/acre date in rating gm rating rating
Maturity Group V        
          
Asgrow   AG5501 58.9 09/18 37 1.0 . 2.3 .
So. States   SSRT587N 56.2 09/22 38 1.0 . 2.0 .
Pioneer   95B95 54.8 09/22 40 1.3 . 1.7 .
Hartz   H5231RR 54.7 09/20 33 1.0 . 2.3 .
So. States   SSRT5999N 54.6 09/22 43 1.7 . 1.7 .
          
So. States   SSRT557N 52.7 09/16 36 1.0 . 1.3 .
Public Variety   Caviness * 52.5 09/17 36 1.3 . 2.3 .
Hartz   H5885RR 52.1 09/19 38 1.3 . 1.7 .
Asgrow   AG5902 52.1 09/24 41 1.0 . 1.3 .
So. States   SSXPRT46704 45.2 09/19 46 2.0 . 1.3 .
          
Average   53.45 09/20 39 1.3 . 1.8 .
LSD at 10% Level N.S.6 02 4 0.5   N.S.  
Std. Err. of Entry Mean 3.4 01 1 0.2   0.3  
          
Maturity Group VI        
          
Pioneer   96B21 55.4 09/23 37 1.0 15.7 1.7 .
So. States   SSRT6299N 48.1 10/01 33 1.0 16.0 1.3 .
So. States   SSRT6999N 42.9 10/06 34 1.0 10.4 1.7 .
SGA   Boggs * 24.8 09/27 33 1.0 10.8 3.0 .
Univ of Ga   G99-G725 16.2 09/26 33 1.0 10.2 3.0 .
          
Average   37.57 09/28 34 1.0 12.6 2.1 .
LSD at 10% Level 6.8 - N.S. - 0.7 0.6  
Std. Err. of Entry Mean 2.6 - 1 - 0.3 0.2  
          
Maturity Groups VII and VIII        
          
Univ of Ga   G99-G6682 52.3 10/05 33 2.3 15.3 2.0 .
Univ of Ga   G99-G104111 47.8 10/15 33 2.3 14.0 1.3 .
SGA   Prichard * 46.4 10/15 33 1.7 15.3 2.0 .
SGA   Benning * 45.7 10/05 35 1.0 13.9 2.0 .
So. States   SSRT7499N 44.8 10/06 33 1.3 12.0 1.3 .
          
Univ of Ga   G99-G3438 43.7 10/06 38 1.0 13.5 1.3 .
          
Average   46.88 10/09 34 1.6 14.0 1.7 .
LSD at 10% Level N.S. 01 N.S. 0.7 0.8 N.S.  
Std. Err. of Entry Mean 2.7 01 2 0.9 0.3 0.2  
          
* Non-Roundup Ready check variety.
          
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. Shattering rating: Rated 1 (no shattering) to 5 (>50% pods shattered).
5. CV = 11.0% and df for EMS = 18.
6. The F-test indicated no statistical differences at the alpha = .10 probability level; therefore, a LSD value was not calculated.
7. CV = 11.9% and df for EMS = 8.
8. CV = 10.0% and df for EMS = 10.
Bolding within each test denotes entries with yields equal to the highest yielding entry based on Fisher's protected LSD (P = 0.10).
Planted: May 16, 2000.
Harvested: Maturity Group V - October 5, 2000.
  Maturity Group VI - October 11, 2000.
  Maturity Groups VII & VIII - October 25, 2000.
Seeding Rate: Eight viable seeds per foot in 30" rows.
Soil Type: Greenville sandy clay loam.
Soil Test: P = Medium, K = High, and pH = 6.1.
Fertilization: 0 lb N, 56 lb P2O5, and 56 lb K2O/acre.
Previous Crop: Soybean.
Management: Subsoiled and bedded, rototilled; Roundup Ultra used for weed control; Karate used for insect control; irrigated 11.0 inches.
          
Test conducted by A. E. Coy and M. D. Pippin.
          
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