| The
Georgia Agricultural Experiment Stations College of Agricultural and Environmental Sciences The University of Georgia |
Research
Report Number 670 January, 2001 |
| Calhoun, Georgia: Roundup Ready Soybean Variety Performance, 2000, Nonirrigated | |||||||||
| 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 | |||||||||
| So. States | SSRT557N | 43.9 | 10/02 | 34 | 1.2 | 16.8 | 1.2 | 1.0 | |
| Asgrow | AG5501 | 42.9 | 09/30 | 30 | 1.0 | 15.2 | 1.5 | 1.5 | |
| Hartz | H5885RR | 40.1 | 10/04 | 36 | 1.3 | 15.9 | 1.7 | 1.0 | |
| Pioneer | 95B95 | 39.0 | 10/06 | 32 | 1.0 | 14.7 | 2.0 | 1.0 | |
| Hartz | H5231RR | 37.3 | 10/01 | 30 | 1.0 | 14.4 | 1.5 | 1.0 | |
| Pioneer | 95B53 | 35.3 | 10/02 | 29 | 1.2 | 13.5 | 2.2 | 1.0 | |
| So. States | SSRT4980 | 33.9 | 09/19 | 33 | 1.3 | 13.0 | 2.5 | 1.8 | |
| Asgrow | AG5902 | 33.7 | 10/03 | 34 | 1.5 | 13.1 | 1.5 | 1.0 | |
| So. States | SSRT587N | 33.6 | 10/02 | 35 | 1.2 | 14.5 | 1.1 | 1.0 | |
| Hartz | H4884RR | 33.4 | 09/15 | 27 | 1.3 | 13.7 | 2.7 | 1.5 | |
| So. States | SSXPRT46704 | 31.4 | 09/30 | 33 | 1.0 | 19.0 | 1.5 | 1.0 | |
| So. States | SSRT5999N | 28.8 | 10/03 | 35 | 1.0 | 16.0 | 1.8 | 1.0 | |
| Pioneer | 9492 | 22.4 | 09/18 | 23 | 1.2 | 13.6 | 3.0 | 1.2 | |
| So. States | SSRT446N | 18.3 | 09/12 | 22 | 1.0 | 14.1 | 3.7 | 2.2 | |
| Average | 33.85 | 09/27 | 31 | 1.2 | 14.8 | 2.0 | 1.2 | ||
| LSD at 10% Level | 6.8 | 6 | 6 | N.S.6 | - | 0.7 | 0.5 | ||
| Std. Err. of Entry Mean | 2.8 | 3 | 2 | 0.2 | - | 0.3 | 0.2 | ||
| Maturity Groups VII and VIII | |||||||||
| Univ of Ga | G99-G725 | 40.9 | 10/15 | 33 | 1.3 | 13.0 | 1.2 | 1.0 | |
| Univ of Ga | G99-G3438 | 39.9 | 10/18 | 38 | 1.3 | 15.1 | 1.5 | 1.3 | |
| So. States | SSRT6299N | 38.0 | 10/12 | 36 | 1.0 | 16.9 | 1.3 | 1.2 | |
| Univ of Ga | G99-G6682 | 37.8 | 10/18 | 39 | 2.0 | 14.8 | 1.8 | 1.0 | |
| So. States | SSRT7499N | 36.0 | 10/19 | 32 | 1.0 | 13.2 | 1.5 | 1.0 | |
| Pioneer | 96B21 | 35.6 | 10/08 | 35 | 1.0 | 16.3 | 2.2 | 1.0 | |
| Grabow | X0601 | 34.7 | 10/04 | 35 | 1.0 | 15.2 | 2.3 | 1.0 | |
| So. States | SSRT6999N | 33.4 | 10/21 | 32 | 1.0 | 13.8 | 1.5 | 1.0 | |
| Univ of Ga | G99-G104111 | 30.0 | 10/18 | 34 | 1.7 | 12.6 | 2.8 | 1.0 | |
| Average | 36.37 | 10/15 | 35 | 1.3 | 14.5 | 1.8 | 1.1 | ||
| LSD at 10% Level | 4.3 | 5 | N.S. | N.S. | - | 0.5 | N.S. | ||
| Std. Err. of Entry Mean | 1.7 | 2 | 3 | 0.3 | - | 0.2 | 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. Shattering rating: Rated 1 (no shattering) to 5 (>50% pods shattered). | |||||||||
| 5. CV = 14.4% and df for EMS = 26. | |||||||||
| 6. The F-test indicated no statistical differences at the alpha = .10 probability level; therefore, a LSD value was not calculated. | |||||||||
| 7. CV = 8.3% and df for EMS = 16. | |||||||||
| 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 15, 2000. | ||||||||
| Harvested: | Maturity Group V - October 11, 2000. | ||||||||
| Maturity Groups VI, VII & VIII - October 23, 2000. | |||||||||
| Seeding Rate: | Eight viable seeds per foot in 30" rows. | ||||||||
| Soil Type: | Waynesboro loam. | ||||||||
| Soil Test: | P = Very High, K = High, and pH = 6.3. | ||||||||
| Fertilization: | 30 lb N, 60 lb P2O5, and 90 lb K2O/acre. | ||||||||
| Previous Crop: | Corn. | ||||||||
| Management: | Moldboard plowed and rototilled; one application of Roundup Ultra used for weed control. | ||||||||
| Test conducted by P. A. Rose, G. Rawls, and J. Stubbs. | |||||||||
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