1998 Soybean Variety Trials
Location 1. Delta Branch Experiment Station, Stoneville
| Soil type | Sharkey clay |
| Soil pH | 7.4 |
| Soil fertility | P-H+, K-H+ |
| Fertilizer added | None |
| Herbicide application | Preplant
- Conventional Tests: Squadron @ 3 pt/A + Prowl @ 0.6 pt/A Preemergence - Roundup Ready Tests: Roundup Ultra @ 24 oz/A Postemergence - Roundup Ready Tests: Roundup Ultra @ 32 oz/A (1 application) |
| Irrigation | Conventional
tests: June 16, June 17, June 28, July 8, July 28, and August 9 Roundup Ready tests: June 18, June 28, July 9, July 28, and August 6 |
| Planting date | May 7, 1998 |
| Harvest date | Group
IV E Nonirrigated - September 9 Group IV E Nonirrigated - September 10 Group IV E & L Irrigated and Group IV L Nonirrigated - September 22 RR Group IV E & IV L, Irrigated & Nonirrigated - September 22 Group V E & L, Irrigated and Nonirrigated - September 28 RR Group V E & L, Irrigated and Nonirrigated - September 28 |
Location Summary
Good field preparation and good moisture ensured excellent conditions during the early growing season. Emergence was very good. Dry conditions during the months of June, July, August, and September significantly affected yields in the nonirrigated tests.
Rainfall Summary
| Inches | |||||||
| April | 4.35 | 
|
|||||
| May | 4.62 | ||||||
| June | 1.59 | ||||||
| July | 5.70 | ||||||
| August | 0.71 | ||||||
| September | 2.90 | ||||||
| Total | 19.87 | ||||||
| Table 23.Maturity Group IV Early Soybeans Planted May 7, 1998, and Irrigated at the Delta Branch Experiment Station in Stoneville.1,2 | |||||||
|---|---|---|---|---|---|---|---|
| Variety | Brand | Yield | Maturity date | Plant height | Lodging score | ||
| 19963 | 19973 | 1998 | |||||
| bu/A | bu/A | bu/A | in | ||||
| DP 3478 | Deltapine | 51.1 | 53.8 | 67.6 | 9/20 | 38 | 4 |
| AP 4880 | Agripro | 53.3 | 58.1 | 66.6 | 9/18 | 38 | 4 |
| A4604 | Asgrow | -- | -- | 64.7 | 9/10 | 31 | 2 |
| HBK 4600 | Hornbeck | -- | -- | 63.4 | 9/17 | 32 | 2 |
| TV4664 | Terral | -- | 48.1 | 62.4 | 9/8 | 35 | 1 |
| STRESSLAND | Public | 52.2 | 50.4 | 59.4 | 9/8 | 24 | 1 |
| HBK4755 | Hornbeck | -- | 46.2 | 58.4 | 9/8 | 29 | 2 |
| TV 4479 | Terral | 52.9 | 41.1 | 57.9 | 9/17 | 29 | 2 |
| HY 4540 | HyPerformer | 51.3 | 37.3 | 57.1 | 9/10 | 30 | 2 |
| TN4-94 | Public | 44.2 | 48.7 | 54.8 | 9/20 | 47 | 4 |
| X9240RR | Delta King | -- | -- | 54.0 | 9/18 | 40 | 3 |
| S46-44 | NK | -- | 49.1 | 53.2 | 9/10 | 34 | 2 |
| TS 4792 | Terra | -- | -- | 50.3 | 9/17 | 46 | 3 |
| TN4-86 | Public | 49.5 | 43.5 | 46.9 | 9/17 | 45 | 3 |
| A4341 | Asgrow | 45.4 | 47.6 | 41.4 | 9/8 | 21 | 1 |
| Overall Mean | 49.4 | 46.9 | 57.3 | ||||
| LSD (.10) | 7.0 | 7.4 | 5.7 | ||||
| Error degrees of freedom | -- | -- | 30 | ||||
| CV (%) | -- | -- | 7.2 | ||||
| R2 (%) | -- | -- | 82 | ||||
| 1Sharkey
Clay Soil. 2All are released varieties. 3Average of early planted and late planted. |
|||||||
| Table 24. Maturity Group IV Late Soybeans Planted May 7, 1998, and Irrigated at the Delta Branch Experiment Station in Stoneville.1 | |||||||
|---|---|---|---|---|---|---|---|
| Variety | Brand | Yield | Maturity date | Plant height | Lodging score | ||
| 19962 | 19972 | 1998 | |||||
| bu/A | bu/A | bu/A | in | ||||
| HBK 4890 | Hornbeck | -- | 55.1 | 75.6 | 9/18 | 40 | 4 |
| 9482 | Pioneer | -- | 49.8 | 71.7 | 9/17 | 38 | 2 |
| KS 4895 | Public | 49.1 | 56.4 | 68.4 | 9/22 | 41 | 3 |
| DPX 8S49 (E)3 | Deltapine | -- | -- | 67.3 | 9/21 | 42 | 4 |
| FFR 495 | Elite | -- | -- | 66.4 | 9/19 | 45 | 3 |
| Dixie 478 | Dixie | 56.9 | 57.7 | 66.0 | 9/18 | 40 | 3 |
| TV 4975 | Terral | -- | 54.6 | 64.6 | 9/22 | 44 | 4 |
| 9511 | Pioneer | 57.1 | 56.2 | 63.7 | 9/20 | 43 | 4 |
| HBK X9749 (E)3 | Hornbeck | -- | -- | 62.6 | 9/16 | 41 | 2 |
| DP 3478 | Deltapine | 51.1 | 53.8 | 62.0 | 9/18 | 39 | 4 |
| A4922 | Asgrow | 53.3 | 39.9 | 61.2 | 9/20 | 40 | 3 |
| RVS 490 | Riverside | -- | 58.3 | 60.8 | 9/22 | 50 | 4 |
| 3495 | Dyna-Gro | 44.1 | 56.1 | 59.2 | 9/19 | 48 | 5 |
| 9492 | Pioneer | -- | -- | 58.9 | 9/16 | 37 | 2 |
| TV 4770 | Terral | 53.5 | 41.9 | 58.6 | 9/17 | 40 | 4 |
| Genesis 9482 | Genesis | -- | -- | 57.5 | 9/16 | 37 | 2 |
| HBK 49 | Hornbeck | 50.5 | 62.2 | 54.3 | 9/22 | 45 | 5 |
| HBK 5149 | Hornbeck | -- | 48.1 | 51.0 | 9/21 | 15 | 1 |
| Manokin | Public | 46.1 | 53.8 | 45.6 | 9/20 | 16 | 1 |
| Overall Mean | 50.5 | 49.0 | 61.9 | ||||
| LSD (.10) | 7.4 | 6.5 | 5.7 | ||||
| Error degrees of freedom | -- | -- | 36 | ||||
| CV (%) | -- | -- | 6.7 | ||||
| R2 (%) | -- | -- | 81 | ||||
| 1Sharkey
Clay Soil. 2Average of early planted and late planted. 3(E) = Experimental. |
|||||||
| Table 25. Maturity Group IV Early Soybeans Planted May 7, 1998, and Not Irrigated at the Delta Branch Experiment Station in Stoneville.1,2 | |||||||
|---|---|---|---|---|---|---|---|
| Variety | Brand | Yield | Maturity date | Plant height | Lodging score | ||
| 19963 | 19973 | 1998 | |||||
| bu/A | bu/A | bu/A | in | ||||
| DP 3478 | Deltapine | 56.6 | 27.9 | 25.5 | 9/2 | 31 | 2 |
| HBK 4600 | Hornbeck | -- | -- | 25.4 | 9/4 | 27 | 1 |
| TN4-86 | Public | 57.8 | 19.4 | 25.1 | 9/2 | 38 | 2 |
| AP 4880 | Agripro | 63.2 | 28.4 | 24.9 | 9/1 | 27 | 1 |
| HY 4540 | HyPerformer | 57.9 | 15.8 | 24.9 | 9/2 | 28 | 1 |
| TV 4479 | Terral | 59.1 | 14 | 24.8 | 9/2 | 26 | 1 |
| A4604 | Asgrow | -- | -- | 22.4 | 9/2 | 29 | 1 |
| HBK4755 | Hornbeck | -- | 16.9 | 22.2 | 9/2 | 25 | 1 |
| TS 4792 | Terra | -- | -- | 22.1 | 9/2 | 42 | 2 |
| X9240RR | Delta King | -- | -- | 21.7 | 9/5 | 32 | 1 |
| TV4664 | Terral | -- | 15.1 | 21.5 | 9/2 | 25 | 1 |
| S46-44 | NK | -- | 23.2 | 20.7 | 9/2 | 25 | 1 |
| TN4-94 | Public | 54.7 | 19.1 | 17.3 | 9/8 | 37 | 1 |
| A4341 | Asgrow | 43.9 | 19.5 | 17.2 | 9/2 | 21 | 1 |
| STRESSLAND | Public | 50.2 | 14.1 | 15.1 | 9/1 | 25 | 1 |
| Overall Mean | 54.9 | 19.4 | 22.0 | ||||
| LSD (.10) | 6.2 | 3.9 | 3.1 | ||||
| Error degrees of freedom | -- | -- | 28 | ||||
| CV (%) | -- | -- | 10.0 | ||||
| R2 (%) | -- | -- | 77 | ||||
| 1Sharkey
Clay Soil. 2All are released varieties. 3Average of early planted and late planted. |
|||||||
| Table 26. Maturity Group IV Late Soybeans Planted May 7, 1998, and Not Irrigated at the Delta Branch Experiment Station in Stoneville.1 | |||||||
|---|---|---|---|---|---|---|---|
| Variety | Brand | Yield | Maturity date | Plant height | Lodging score | ||
| 19962 | 19972 | 1998 | |||||
| bu/A | bu/A | bu/A | in | ||||
| 9482 | Pioneer | -- | 23.2 | 25.4 | 9/4 | 29 | 2 |
| DPX 8S49 (E)3 | Deltapine | -- | -- | 22.8 | 9/18 | 30 | 2 |
| 9492 | Pioneer | -- | -- | 22.7 | 9/2 | 29 | 1 |
| KS 4895 | Public | 55.6 | 25.6 | 21.6 | 9/8 | 34 | 2 |
| TV 4770 | Terral | 63.6 | 17.6 | 20.7 | 9/6 | 28 | 1 |
| HBK X9749 (E)3 | Hornbeck | -- | -- | 20.4 | 9/2 | 31 | 2 |
| Manokin | Public | 50.6 | 29.2 | 20.0 | 9/16 | 14 | 1 |
| A4922 | Asgrow | 57.3 | 18.1 | 19.9 | 9/3 | 31 | 1 |
| HBK 49 | Hornbeck | 48.5 | 26.8 | 19.0 | 9/18 | 35 | 2 |
| Genesis 9482 | Genesis | -- | -- | 18.7 | 9/2 | 31 | 1 |
| DP 3478 | Deltapine | 56.6 | 27.9 | 18.0 | 9/4 | 31 | 1 |
| Dixie 478 | Dixie | 64.6 | 17.7 | 17.7 | 9/4 | 26 | 1 |
| FFR 495 | Elite | -- | -- | 17.5 | 9/6 | 30 | 1 |
| 9511 | Pioneer | 62.5 | 29.8 | 17.1 | 9/15 | 30 | 2 |
| 3495 | Dyna-Gro | 47.1 | 21.3 | 16.1 | 9/8 | 36 | 2 |
| TV 4975 | Terral | -- | 23.7 | 15.7 | 9/18 | 32 | 1 |
| HBK 5149 | Hornbeck | -- | 25.6 | 15.6 | 9/16 | 16 | 1 |
| HBK 4890 | Hornbeck | -- | 23.1 | 15.6 | 9/4 | 30 | 1 |
| RVS 490 | Riverside | -- | 24.8 | 13.0 | 9/8 | 37 | 2 |
| Overall Mean | 54.8 | 21.3 | 18.8 | ||||
| LSD (.10) | 4.8 | 7.2 | 3.6 | ||||
| Error degrees of freedom | -- | -- | 36 | ||||
| CV (%) | -- | -- | 14.0 | ||||
| R2 (%) | -- | -- | 69 | ||||
| 1Sharkey
Clay Soil. 2Average of early planted and late planted. 3(E) = Experimental. |
|||||||
| Table 27. Maturity Group V Early Soybeans Planted May 7, 1998, and Irrigated at the Delta Branch Experiment Station in Stoneville.1 | |||||||
|---|---|---|---|---|---|---|---|
| Variety | Brand | Yield | Maturity date | Plant height | Lodging score | ||
| 19962 | 19972 | 1998 | |||||
| bu/A | bu/A | bu/A | in | ||||
| 95B33 | Pioneer | -- | -- | 74.5 | 9/17 | 20 | 1 |
| DG500A (E)3 | DEKALB | -- | -- | 73.1 | 9/16 | 36 | 3 |
| DK 5850 | Delta King | 58.8 | 50.4 | 64.7 | 9/19 | 20 | 1 |
| V89-805 (E)3 | Public | -- | -- | 64.6 | 9/22 | 17 | 1 |
| 9511 | Pioneer | -- | -- | 63.9 | 9/26 | 45 | 3 |
| Delsoy 5500 | Public | 55.6 | 52.1 | 61.3 | 9/24 | 20 | 1 |
| A5547 | Asgrow | 64.4 | 49.7 | 61.0 | 9/21 | 16 | 1 |
| DPX 8S56 (E)3 | Deltapine | -- | -- | 61.0 | 9/22 | 23 | 3 |
| DP 5354 | Deltapine | -- | 59.1 | 60.9 | 9/18 | 21 | 1 |
| Genesis 9511 | Genesis | -- | -- | 60.3 | 9/20 | 18 | 1 |
| X9855 (E)3 | NK | -- | -- | 57.8 | 9/21 | 19 | 1 |
| A5704 | Asgrow | -- | -- | 57.7 | 9/20 | 17 | 1 |
| Essex | Public | -- | -- | 56.5 | 9/15 | 12 | 1 |
| 55 | Buckshot | 67.1 | 38.5 | 55.7 | 9/23 | 20 | 1 |
| R Robin-5 | Riverside | 57.1 | 35.2 | 54.7 | 9/21 | 18 | 1 |
| H5050 | Hartz | 66.9 | 54.1 | 54.3 | 9/25 | 26 | 2 |
| V90-1012 (E)3 | Public | -- | -- | 54.0 | 9/17 | 17 | 1 |
| TN5-95 | Public | 55.5 | 46.9 | 53.7 | 9/18 | 18 | 1 |
| S57-11 | NK | 59.1 | 51.4 | 53.4 | 9/22 | 21 | 1 |
| DP 3519s | Deltapine | 55.5 | 34.1 | 53.2 | 9/20 | 16 | 1 |
| RVS 77 | Riverside | 56.1 | 47.1 | 53.1 | 9/27 | 21 | 2 |
| Essex RSVI (E)3 | Public | -- | -- | 52.5 | 9/16 | 13 | 1 |
| HY 574 | HyPerformer | 66.1 | 51.4 | 52.2 | 9/27 | 22 | 2 |
| X9851 (E)3 | NK | -- | -- | 51.1 | 9/15 | 16 | 1 |
| RVS 520 | Terra | -- | -- | 49.7 | 9/28 | 55 | 4 |
| Hutcheson | Public | 60.3 | 45.4 | 49.6 | 9/22 | 18 | 1 |
| TV5495 | Terral | 57.5 | 43.5 | 49.3 | 9/25 | 33 | 2 |
| DG500B (E)3 | DEKALB | -- | -- | 48.5 | 9/24 | 18 | 1 |
| X9450RR | Delta King | -- | -- | 48.4 | 9/26 | 17 | 1 |
| RVS 549 | Riverside | 62.3 | 51.2 | 48.1 | 9/22 | 19 | 1 |
| RVS 529I | Riverside | 57.2 | 55.9 | 45.2 | 9/26 | 48 | 3 |
| AP 572STS | Agripro | -- | -- | 42.3 | 9/28 | 19 | 1 |
| Overall Mean | 50.7 | 47.6 | 55.8 | ||||
| LSD (.10) | 8.2 | 6.3 | 5.2 | ||||
| Error degrees of freedom | -- | -- | 62 | ||||
| CV (%) | -- | -- | 6.9 | ||||
| R2 (%) | -- | -- | 85 | ||||
| 1Sharkey
Clay Soil. 2Average of early planted and late planted. 3(E) = Experimental. |
|||||||
| Table 28.Maturity Group V Late Soybeans Planted May 7, 1998, and Irrigated at the Delta Branch Experiment Station in Stoneville.1 | |||||||
|---|---|---|---|---|---|---|---|
| Variety | Brand | Yield | Maturity date | Plant height | Lodging score | ||
| 19962 | 19972 | 1998 | |||||
| bu/A | bu/A | bu/A | in | ||||
| DK5995 | Delta King | -- | 51.5 | 70.1 | 9/26 | 23 | 1 |
| DT95-15091 (E)3 | Public | -- | -- | 66.7 | 9/22 | 35 | 3 |
| HBK 5770 | Hornbeck | -- | 50.2 | 64.0 | 9/26 | 32 | 2 |
| DT95-15550 (E)3 | Public | -- | -- | 63.8 | 9/19 | 25 | 2 |
| 9594 | Pioneer | 70.1 | 57.7 | 62.9 | 9/25 | 23 | 1 |
| S59-60 | NK | 62.7 | 48.6 | 62.5 | 9/27 | 18 | 1 |
| Caviness | Public | -- | 50.1 | 61.6 | 9/19 | 18 | 1 |
| HBK X571-98 (E)3 | Hornbeck | -- | -- | 60.8 | 9/27 | 23 | 1 |
| CX570C | DEKALB | -- | 58.4 | 60.5 | 9/20 | 18 | 1 |
| S51-00 | NK | -- | -- | 60.1 | 9/22 | 38 | 3 |
| DPX 8S59 (E)3 | Deltapine | -- | -- | 59.9 | 9/28 | 33 | 3 |
| A5843 | Asgrow | 51.7 | 48.5 | 58.8 | 9/25 | 21 | 1 |
| A5944 | Asgrow | 61.1 | 54.7 | 58.8 | 9/28 | 22 | 1 |
| A5848 | Asgrow | 60.8 | 52.7 | 58.1 | 9/27 | 17 | 1 |
| DG858 (E)3 | DEKALB | -- | -- | 57.2 | 9/27 | 20 | 2 |
| UARK-5798 | Public | 70.6 | 56.1 | 55.9 | 9/27 | 25 | 1 |
| 3576 | Dyna-Gro | 56.8 | 42.4 | 55.8 | 9/21 | 16 | 1 |
| Hutcheson | Public | 62.1 | 45.4 | 55.8 | 9/19 | 17 | 1 |
| TV 5893 | Terral | 61.6 | 54.2 | 55.4 | 9/24 | 25 | 2 |
| DP 3588 | Deltapine | 62.3 | 52.9 | 55.0 | 9/24 | 32 | 3 |
| HBK 5990 | Hornbeck | -- | 59.4 | 54.6 | 9/25 | 19 | 1 |
| DT95-17556 (E)3 | Public | -- | -- | 54.4 | 9/25 | 18 | 1 |
| DG758 | DEKALB | -- | 52.7 | 53.5 | 9/24 | 24 | 1 |
| A5959 | Asgrow | 62.4 | 52.8 | 52.9 | 9/25 | 21 | 1 |
| UARK-5896 (E)3 | Public | 57.8 | 52.6 | 52.6 | 9/26 | 23 | 1 |
| FFR 597 | Elite | -- | -- | 52.3 | 9/27 | 23 | 1 |
| V91-3036 | Public | -- | -- | 51.9 | |||