Howard Siegrist, Agriculture and Natural Resources Extension Agent
Evaluate current Roundup Ready and conventional soybean varieties under high-yield environmental conditions in Licking County.
| Cooperator: | Ohio Foundation Seeds | Planting Date: | June 10, 2002 |
| County: | Licking | Planting Rate: | 170,000 seeds/A |
| Nearest Town: | Croton | Row Width: | 10-inch |
| Drainage: | Systematically tiled | Herbicides: | |
| Soil type: | Clay silt loam | PRE: | 2 pt/A Dual |
| Tillage: | Conventional till | POST: | Roundup Ready plots — |
| Previous Crop: | Corn | 32 oz/A | |
| Variety: | See Results | Roundup Ultra Max | |
| Soil test: | pH 6.4, P 32 ppm, | Conventional plots — | |
| K 120 ppm | 2.2 oz/A First Rate, | ||
| Fertilizer: | None | 1 pt/A Basagran, | |
| 1 qt/A crop oil | |||
| Harvest Date: | November 2, 2002 |
All plots were randomized with three replications of each variety. Plots were 30 feet in length and six rows wide. Early Roundup Ready soybeans were of 2.8 to 3.4 relative maturity. Late Roundup Ready Soybeans were of 3.5 to 3.9 relative maturity. The maturity ratings of the conventional soybeans were in a range of 2.7 to 3.9. Harvest estimates were made by weights calculated from combine. Yield averages were adjusted to a standard moisture of 13.0%.
| Roundup Ready Early | Yield | Roundup Ready Late | Yield | Conventional | Yield |
| (bu/A) | (bu/A) | (bu/A) | |||
| Pioneer 93B36 | 55.5 | DeKalb DKB35-51 | 56.7 | Sow Right SR390 | 53.3 |
| Vigoro V332RR | 55.0 | Pioneer 93B72 | 49.7 | LG Seeds C3545 | 46.3 |
| DeKalb DKB31-52 | 51.9 | Seed Consultants SC9391 | 48.6 | LG Seeds C3201 | 45.2 |
| LG Seeds C3033RR | 51.5 | Asgrow AG3703 | 47.8 | Shur Grow 398 | 43.8 |
| LG Seeds C3429RR | 51.4 | Seed Consultants SC9371 | 46.4 | Sow Right SR350 | 43.1 |
| LG Seeds C3322WRR | 50.2 | Ag Venture AV 6371RR | 46.0 | Shur Grow 328STS | 42.4 |
| Golden Harvest H2940RR | 49.4 | Seed Consultants SC9362 | 44.6 | Steyer 386 | 41.8 |
| Asgrow AG3302 | 49.2 | AGI 7361RR | 44.4 | Vigoro V380 | 41.3 |
| NK S34-B2 | 49.1 | Sun Prairie SP3602NRR | 44.1 | General | 41.1 |
| Ag Venture AV6329RR | 49.1 | Pioneer 93B53 | 43.3 | LG Seeds C3883N | 40.4 |
| NK S32-G5 | 48.9 | Vigoro V372RR | 43.2 | Shur Grow 392STS | 39.5 |
| Shur Grow 312RR | 48.9 | Garst 3712RR | 43.1 | Dilworth | 38.7 |
| Vigoro V340RR | 48.5 | Seed Consultants SC9351 | 42.6 | Ag Venture AV1398 | 38.4 |
| Golden Harvest H3243RR | 47.9 | Crow’s C3717R | 42.6 | Ohio FG3 | 38.2 |
| Ag Venture AV6289RR | 47.6 | LG Seeds C3655RR | 40.6 | Shur Grow 311STS | 37.2 |
| Shur Grow 332RR | 47.4 | AGI 7374 | 40.6 | Ohio FG1 | 36.9 |
| Seed Consultants SC9320 | 46.5 | LG Seeds C3944NRR | 40.3 | Ag Venture AV1329 | 36.6 |
| Steyer 3010 | 46.2 | LG Seeds C3767RR | 39.2 | Kottman | 36.0 |
| AGI 30R01 | 45.9 | Golden Harvest H3603RR | 38.6 | Sow Right SR360STS | 34.4 |
| AGI 7343RR | 45.2 | LG Seeds C3996RR | 38.1 | Ag Venture AV227 | 34.3 |
| DeKalb DKB31-51 | 44.8 | AGI 7377NRR | 37.9 | Stressland | 34.1 |
| Asgrow AG3401 | 44.1 | Pioneer 93B68 | 37.8 | ||
| Crow’s C3315R | 44.0 | Shur Grow 362RR | 36.6 | High | 53.3 |
| Steyer 3430 | 43.5 | DeKalb DKB38-51 | 36.5 | Average | 40.1 |
| Brodbeck SC3000 | 43.5 | HF9667-2-15 (3.8) | 36.5 | Low | 34.1 |
| Brodbeck SC3080 | 43.5 | Pioneer 93B67 | 36.5 | LSD (0.05) | 13.8 |
| Asgrow AG3201 | 42.9 | Vigoro V37N3RR | 36.1 | ||
| Sun Prairie SP3400RR | 42.6 | Steyer 3540 | 35.5 | ||
| Sun Prairie SP2801RR | 42.4 | Sun Prairie SP3702RR | 35.4 | ||
| HF9670-3-10 (3.0) | 42.3 | Hytest RT 3600RR | 34.9 | ||
| HF9667-2-4 (2.6) | 41.3 | Shur Grow 351RR | 34.0 | ||
| Sun Prairie SP2902NRR | 40.0 | Shur Grow 370RR | 33.6 | ||
| Hytest RT346RR | 39.7 | Golden Harvest H3994RR | 32.4 | ||
| Ag Venture AV6361RR | 30.8 | ||||
| High | 55.5 | Pioneer 94B13 | 29.8 | ||
| Average | 46.7 | Ag Venture AV6350RR | 28.6 | ||
| Low | 39.7 | Shur Grow 360RR | 28.3 | ||
| LSD (0.05) | 9.2 | NK S 35-A6 | 23.4 | ||
| Crow’s C3915R | 21.9 | ||||
| HF9665-2-15 (3.9) | 21.2 | ||||
| High | 56.7 | ||||
| Average | 38.2 | ||||
| Low | 212 | ||||
| LSD (0.05) | 17.5 | ||||
Seventeen varieties of the early Roundup Ready soybeans were not significantly different from each other with yields ranging from 46.5 to 55.5 bushels per acre. Eighteen late Roundup Ready soybean varieties were not significantly different from each other with yields ranging from 39.2 to 56.7 bushels per acre.
For the conventional soybean plots, 11 varieties were not significantly different in yield from each other with a range of 39.5 to 53.3 bushels per acre.
For additional information, contact:
Howard Siegrist
Ohio State University Extension, Licking County
771 E. Main St, Suite 103
Newark, OH 43055
1-888-838-0219 Ext. 6900
siegrist.1@osu.edu