Location 5. Mississippi State University, Starkville
| Soil type | Leeper silty clay |
| Soil pH | 8.1 |
| Soil fertility | P-H, K-H |
| Fertilizer added | 0-0-60 @ 100 lb/A + 0-46-0 @ 100 lb/A |
| Herbicide application | Preemergence
- Conventional Test: Squadron @ 3 pt/A Postemergence - Conventional Test: Storm @ 1.5 pt/A Roundup Ready Test: Roundup Ultra @ 32 oz/A (3 applications) |
| Planting date | May 4, 1998 |
| Harvest date | Roundup Ready
Group IV E: September 8, 1998 Group IV E: September 11, 1998 Roundup Ready Group IV L: September 16, 1998 Group V: September 26, 1998 |
Location Summary
Soybeans were planted on stale seedbeds in excellent moisture. Soybean plants emerged quickly to very good stands. Heavy infestations of bean leaf beetles warranted two applications of ASSNAXL, which gave good control. Soybeans grew off well during the hot and dry months of May and June. Very timely rains in June, July and August rescued the test, resulting in good yields at harvest.
Rainfall Summary
| Inches | |||||||
| May | 2.30 | 
|
|||||
| June | 2.00 | ||||||
| July | 5.20 | ||||||
| August | 5.30 | ||||||
| Sept | 6.00 | ||||||
| Total | 20.80 | ||||||
| Table 56. Maturity Group IV Early Soybeans Planted May 4, 1998, at Mississippi State University in Starkville.1,2 | |||||||
|---|---|---|---|---|---|---|---|
| Variety | Brand | Yield | Maturity date | Plant height | Lodging score | ||
| 19963 | 1997 | 1998 | |||||
| bu/A | bu/A | bu/A | in | ||||
| DP 3478 | Deltapine | -- | 31.6 | 51.3 | 9/10 | 35 | 2 |
| AP 4880 | Agripro | -- | 28.9 | 49.9 | 9/11 | 33 | 2 |
| HBK 4600 | Hornbeck | -- | -- | 48.6 | 9/8 | 32 | 2 |
| A4604 | Asgrow | -- | -- | 44.9 | 9/4 | 32 | 2 |
| HBK4755 | Hornbeck | -- | 25.3 | 44.8 | 8/29 | 31 | 2 |
| TV 4479 | Terral | -- | 25.3 | 44.1 | 9/2 | 29 | 2 |
| HY 4540 | HyPerformer | -- | 26.9 | 43.4 | 9/8 | 31 | 2 |
| TN4-94 | Public | -- | 18.5 | 43.3 | 9/11 | 40 | 3 |
| X9240RR | Delta King | -- | -- | 41.7 | 9/8 | 35 | 2 |
| S46-44 | NK | -- | 20.2 | 41.3 | 8/25 | 31 | 2 |
| TV4664 | Terral | -- | 31.5 | 38.6 | 8/28 | 29 | 2 |
| STRESSLAND | Public | -- | 28.6 | 37.4 | 8/24 | 25 | 2 |
| TS 4792 | Terra | -- | -- | 33.4 | 9/4 | 46 | 3 |
| TN4-86 | Public | -- | 26.1 | 31.6 | 9/4 | 45 | 3 |
| A4341 | Asgrow | -- | 22.8 | 30.7 | 8/24 | 22 | 1 |
| Overall Mean | -- | 27.0 | 41.7 | ||||
| LSD (.10) | -- | 4.6 | 6.0 | ||||
| Error degrees of freedom | -- | 20 | 28 | ||||
| CV (%) | -- | 12.1 | 10.4 | ||||
| R2 (%) | -- | 78 | 77 | ||||
| 1Leeper
Silty Clay Soil. 2All are released varieties. 3Not planted in 1996. |
|||||||
| Table 57. Maturity Group IV Late Soybeans Planted May 4, 1998, at Mississippi State University, Starkville.1 | |||||||
|---|---|---|---|---|---|---|---|
| Variety | Brand | Yield | Maturity date | Plant height | Lodging score | ||
| 19962 | 1997 | 1998 | |||||
| bu/A | bu/A | bu/A | in | ||||
| 9511 | Pioneer | -- | 33.3 | 54.9 | 9/13 | 41 | 2 |
| DPX 8S49 (E)3 | Deltapine | -- | -- | 54.5 | 9/14 | 37 | 2 |
| FFR 495 | Elite | -- | -- | 50.9 | 9/7 | 35 | 2 |
| 9482 | Pioneer | -- | 16.3 | 50.9 | 9/7 | 30 | 2 |
| KS 4895 | Public | -- | 21.4 | 50.0 | 9/15 | 37 | 2 |
| RVS 490 | Riverside | -- | 36.3 | 49.5 | 9/15 | 42 | 2 |
| TV 4975 | Terral | -- | 34.1 | 48.4 | 9/15 | 40 | 2 |
| HBK 5149 | Hornbeck | -- | 28.2 | 46.1 | 9/8 | 20 | 1 |
| Dixie 478 | Dixie | -- | 22.7 | 45.9 | 9/4 | 31 | 2 |
| Genesis 9482 | Genesis | -- | -- | 45.8 | 8/28 | 31 | 3 |
| 3495 | Dyna-Gro | -- | 31.8 | 45.8 | 9/13 | 38 | 3 |
| DP 3478 | Deltapine | -- | 31.6 | 44.3 | 9/8 | 28 | 2 |
| HBK 49 | Hornbeck | -- | 32.7 | 42.7 | 9/12 | 48 | 3 |
| A4922 | Asgrow | -- | 24.5 | 41.5 | 9/7 | 32 | 2 |
| HBK X9749 (E)3 | Hornbeck | -- | -- | 41.1 | 9/4 | 34 | 2 |
| Manokin | Public | -- | 34.1 | 41.0 | 9/8 | 17 | 2 |
| TV 4770 | Terral | -- | 18.4 | 40.0 | 9/7 | 32 | 2 |
| HBK 4890 | Hornbeck | -- | 11.9 | 38.5 | 8/31 | 30 | 2 |
| 9492 | Pioneer | -- | -- | 36.4 | 9/7 | 30 | 2 |
| Overall Mean | -- | 24.0 | 45.7 | ||||
| LSD (.10) | -- | 5.1 | 4.6 | ||||
| Error degrees of freedom | -- | 50 | 36 | ||||
| CV (%) | -- | 15.6 | 7.3 | ||||
| R2 (%) | -- | 88 | 79 | ||||
| 1Leeper
Silty Clay Soil. 2Not planted in 1996. 3(E) = Experimental. |
|||||||
| Table 58. Maturity Group V Early Soybeans Planted May 4, 1998, at Mississippi State University, Starkville.1 | |||||||
|---|---|---|---|---|---|---|---|
| Variety | Brand | Yield | Maturity date | Plant height | Lodging score | ||
| 19962 | 1997 | 1998 | |||||
| bu/A | bu/A | bu/A | in | ||||
| DPX 8S56 (E)3 | Deltapine | -- | -- | 47.9 | 9/21 | 26 | 1 |
| HY 574 | HyPerformer | -- | 50.7 | 47.3 | 9/21 | 23 | 1 |
| 95B33 | Pioneer | -- | -- | 46.9 | 9/8 | 19 | 1 |
| X9855 (E)3 | NK | -- | -- | 45.9 | 9/12 | 19 | 1 |
| 9511 | Pioneer | -- | -- | 45.9 | 9/14 | 39 | 2 |
| TV5495 | Terral | -- | 51.4 | 45.0 | 9/21 | 30 | 1 |
| 55 | Buckshot | -- | 52.1 | 43.6 | 9/17 | 20 | 2 |
| RVS 77 | Riverside | -- | 45.2 | 43.6 | 9/25 | 25 | 1 |
| DP 5354 | Deltapine | -- | 51.2 | 43.3 | 9/12 | 26 | 2 |
| V90-1012 (E)3 | Public | -- | -- | 42.5 | 9/13 | 27 | 1 |
| H5050 | Hartz | -- | 55.4 | 42.5 | 9/21 | 24 | 1 |
| R Robin-5 | Riverside | -- | 49.8 | 42.1 | 9/25 | 21 | 1 |
| DG500A (E)3 | DEKALB | -- | -- | 41.9 | 9/4 | 29 | 2 |
| Hutcheson | Public | -- | 44.4 | 41.7 | 9/14 | 19 | 1 |
| A5547 | Asgrow | -- | 47.7 | 41.3 | 9/15 | 19 | 1 |
| DK 5850 | Delta King | -- | 52.4 | 41.0 | 9/17 | 21 | 1 |
| DP 3519s | Deltapine | -- | 46.9 | 40.4 | 9/14 | 22 | 1 |
| RVS 529I | Riverside | -- | 41.1 | 39.9 | 9/14 | 47 | 3 |
| S57-11 | NK | -- | 48.2 | 39.5 | 9/21 | 23 | 1 |
| RVS 520 | Terra | -- | -- | 39.4 | 9/25 | 39 | 3 |
| RVS 549 | Riverside | -- | 43.8 | 39.1 | 9/21 | 19 | 1 |
| TN5-95 | Public | -- | 37.7 | 38.9 | 9/12 | 20 | 1 |
| A5704 | Asgrow | -- | -- | 38.0 | 9/21 | 21 | 1 |
| Genesis 9511 | Genesis | -- | -- | 37.8 | 9/14 | 18 | 1 |
| X9851 (E)3 | NK | -- | -- | 37.2 | 9/8 | 15 | 1 |
| Delsoy 5500 | Public | -- | 47.1 | 36.9 | 9/17 | 20 | 1 |
| AP 572STS | Agripro | -- | -- | 36.3 | 9/25 | 18 | 1 |
| Essex | Public | -- | -- | 33.6 | 9/7 | 17 | 1 |
| V89-805 (E)3 | Public | -- | -- | 33.4 | 9/12 | 18 | 1 |
| DG500B (E)3 | DEKALB | -- | -- | 33.1 | 9/17 | 24 | 1 |
| Essex RSVI (E)3 | Public | -- | -- | 33.0 | 9/7 | 15 | 1 |
| X9450RR | Delta King | -- | -- | 26.6 | 9/17 | 20 | 1 |
| Overall Mean | -- | 45.3 | 40.2 | ||||
| LSD (.10) | -- | 6.7 | 5.0 | ||||
| Error degrees of freedom | -- | 60 | 62 | ||||
| CV (%) | -- | 10.9 | 9.2 | ||||
| R2 (%) | -- | 71 | 76 | ||||
| 1Leeper
Silty Clay Soil. 2Not planted in 1996. 3(E) = Experimental. |
|||||||
| Table 59. Maturity Group V Late Soybeans Planted May 4, 1998, at Mississippi State University, Starkville.1 | |||||||
|---|---|---|---|---|---|---|---|
| Variety | Brand | Yield | Maturity date | Plant height | Lodging score | ||
| 19962 | 1997 | 1998 | |||||
| bu/A | bu/A | bu/A | in | ||||
| TV 5893 | Terral | -- | 58.7 | 48.6 | 9/22 | 28 | 1 |
| DT95-15091 (E)3 | Public | -- | -- | 47.4 | 9/21 | 29 | 1 |
| DK5995 | Delta King | -- | 52.7 | 45.6 | 9/21 | 22 | 1 |
| 9594 | Pioneer | -- | 54.4 | 45.5 | 9/21 | 23 | 1 |
| S59-60 | NK | -- | 61.6 | 45.3 | 9/25 | 22 | 1 |
| DG758 | DEKALB | -- | 55.1 | 44.7 | 9/22 | 25 | 1 |
| DT95-15550 (E)3 | Public | -- | -- | 44.3 | 9/21 | 22 | 1 |
| A5959 | Asgrow | -- | 50.8 | 44.2 | 9/21 | 20 | 1 |
| S51-00 | NK | -- | -- | 43.8 | 9/14 | 37 | 2 |
| UARK-5798 | Public | -- | 53.8 | 43.2 | 9/21 | 21 | 1 |
| DP 3588 | Deltapine | -- | 59.1 | 43.1 | 9/23 | 33 | 2 |
| CX570C | DEKALB | -- | 59.6 | 42.8 | 9/22 | 22 | 1 |
| HBK 5990 | Hornbeck | -- | 55.3 | 42.5 | 9/26 | 18 | 1 |
| DPX 8S59 (E)3 | Deltapine | -- | -- | 41.9 | 9/25 | 31 | 2 |
| HBK 5770 | Hornbeck | -- | 54.8 | 41.6 | 9/21 | 27 | 1 |
| A5944 | Asgrow | -- | 50.7 | 41.2 | 9/21 | 20 | 1 |
| HBK X571-98 (E)3 | Hornbeck | -- | -- | 40.2 | 9/17 | 20 | 1 |
| Hutcheson | Public | -- | 51.8 | 40.1 | 9/21 | 16 | 1 |
| Caviness | Public | -- | 47.2 | 39.4 | 9/22 | 20 | 1 |
| DT95-17556(E)3 | Public | -- | -- | 38.7 | 9/21 | 19 | 1 |
| A5843 | Asgrow | -- | 54.1 | 38.5 | 9/21 | 21 | 1 |
| FFR 597 | Elite | -- | -- | 38.5 | 9/25 | 20 | 1 |
| UARK-5896 | Public | -- | 49.1 | 37.7 | 9/26 | 21 | 1 |
| A5848 | Asgrow | -- | 49.1 | 37.4 | 9/21 | 17 | 1 |
| DG759 | DEKALB | -- | 49.9 | 37.1 | 9/21 | 18 | 1 |
| TV5926 | Terral | -- | 45.4 | 36.0 | 9/22 | 23 | 1 |
| DG858(E)3 | DEKALB | -- | -- | 35.1 | 9/21 | 21 | 1 |
| 3576 | Dyna-Gro | -- | 44.8 | 34.6 | 9/14 | 19 | 1 |
| V91-3036(E)3 | Public | -- | -- | 31.3 | 9/16 | 21 | 1 |
| Overall Mean | -- | 52.4 | 41.0 | ||||
| LSD (.10) | -- | 5.5 | 4.0 | ||||
| Error degrees of freedom | -- | 52 | 56 | ||||
| CV (%) | -- | 7.7 | 7.2 | ||||
| R2 (%) | -- | 75 | 79 | ||||
| 1Leeper
Silty Clay Soil. 2Not planted in 1996. 3(E)= Experimental. |
|||||||
| Table 60. Maturity GroupVI Soybeans Planted May 4, 1998, at Mississippi State University, Starkville.1 | |||||||
|---|---|---|---|---|---|---|---|
| Variety | Brand | Yield | Maturity date | Plant height | Lodging score | ||
| 19962 | 1997 | 1998 | |||||
| bu/A | bu/A | bu/A | in | ||||
| R92-1258 (E)3 | Public | -- | 53.2 | 43.9 | 9/29 | 27 | 1 |
| 9631 | Pioneer | -- | 54.1 | 43.4 | 10/3 | 29 | 1 |
| 9594 | Pioneer | -- | -- | 42.6 | 9/26 | 23 | 1 |
| S62-62 | NK | -- | 50.6 | 41.8 | 9/29 | 23 | 1 |
| HBK 6600 | Hornbeck | -- | 59.9 | 40.1 | 10/12 | 31 | 1 |
| Dillon | Public | -- | 55.6 | 39.7 | 9/28 | 26 | 1 |
| HBK 6800 | Hornbeck | -- | 53.1 | 38.8 | 10/5 | 26 | 1 |
| RVS 678 | Riverside | -- | 53.2 | 38.1 | 10/6 | 28 | 2 |
| 9692 | Pioneer | -- | -- | 37.9 | 10/12 | 25 | 1 |
| FFR 665 | Elite | -- | -- | 37.1 | 10/12 | 23 | 1 |
| A6711 | Asgrow | -- | 50.5 | 36.8 | 10/5 | 25 | 1 |
| BOGGS | SGA | -- | 54.2 | 36.5 | 10/5 | 23 | 1 |
| SC89-147 | Public | -- | 52.1 | 35.9 | 10/12 | 26 | 1 |
| A6961 | Asgrow | -- | 57.7 | 35.8 | 10/22 | 32 | 1 |
| A6297 | Asgrow | -- | 51.4 | 34.0 | 10/5 | 24 | 1 |
| H6200 | Hartz | -- | -- | 33.2 | 9/26 | 22 | 1 |
| Musen | Public | -- | 53.1 | 30.6 | 10/22 | 32 | 1 |
| DG762 (E)3 | DEKALB | -- | 44.9 | 29.2 | 10/3 | 26 | 1 |
| TN6-90 | Public | -- | 43.4 | 29.1 | 10/5 | 28 | 1 |
| 66 | Buckshot | -- | 56.9 | 28.7 | 10/22 | 37 | 2 |
| Lamar | Public | -- | 47.2 | 27.9 | 10/23 | 28 | 1 |
| A6785 | Asgrow | -- | 50.1 | 23.0 | 10/12 | 31 | 1 |
| Overall Mean | -- | 53.1 | 35.6 | ||||
| LSD (.10) | -- | 4.1 | 6.6 | ||||
| Error degrees of freedom | -- | 72 | 42 | ||||
| CV (%) | -- | 5.7 | 13.4 | ||||
| R2 (%) | -- | 83 | 68 | ||||
| 1Leeper
Silty Clay Soil. 2Not planted in 1996. 3(E) = Experimental. |
|||||||
| Table 61. Roundup Ready Maturity Group IV Early Soybeans Planted May 4, 1998 at Mississippi State University in Starkville1,2 | |||||||
|---|---|---|---|---|---|---|---|
| Variety | Brand | Yield | Maturity date | Plant height | Lodging score | ||
| 19962 | 1997 | 1998 | |||||
| bu/A | bu/A | bu/A | in | ||||
| AG4601 | Asgrow | -- | 22.7 | 49.9 | 9/1 | 31 | 2 |
| SG468RR | Sure-Grow | -- | -- | 49.7 | 9/8 | 38 | 3 |
| H4252RR | Hartz | -- | -- | 48.5 | 9/6 | 35 | 2 |
| AP 4602RR | Agripro | -- | -- | 45.6 | 8/26 | 32 | 2 |
| TS 466RR | Terra | -- | -- | 44.5 | 8/31 | 30 | 2 |
| SF477RR | SF Services | -- | 25.9 | 43.8 | 9/1 | 31 | 2 |
| AG4602 | Asgrow | -- | -- | 40.3 | 8/26 | 30 | 2 |
| 2467NRR | Willcross | -- | -- | 40.0 | 8/24 | 29 | 1 |
| AG4501 | Asgrow | -- | 24.1 | 39.5 | 8/31 | 28 | 2 |
| HBK R4515 | Hornbeck | -- | -- | 39.1 | 8/28 | 30 | 2 |
| FFR 467 | Elite | -- | -- | 38.8 | 9/1 | 34 | 2 |
| TV4466RR | Terral | -- | |||||