| Total | Total | Total | Total | Relative Yield | |
| Variety | 2003 | 2002 | 2001 | 2002-03 | 2002-03 |
| WL 342 | 8.31 | 6.55 | 2.39 | 15.01 | 105 |
| Starbuck | 8.11 | 6.79 | 2.38 | 14.84 | 104 |
| DKA 42-15 | 8.01 | 6.79 | 2.26 | 14.64 | 102 |
| 54V54 | 8.13 | 6.60 | 2.33 | 14.55 | 102 |
| 6420 | 7.76 | 6.59 | 2.51 | 14.52 | 101 |
| HybriForce-400 | 8.23 | 6.46 | 2.36 | 14.49 | 101 |
| Ameristand 403T | 7.90 | 6.45 | 2.48 | 14.43 | 101 |
| A 30-06 | 7.87 | 6.41 | 2.48 | 14.42 | 101 |
| Phirst | 7.81 | 6.42 | 2.35 | 14.20 | 99 |
| FK 421 | 7.57 | 6.13 | 2.20 | 13.73 | 96 |
| 54H91 | 7.81 | 5.90 | 2.33 | 13.65 | 95 |
| Vernal | 7.01 | 6.22 | 2.32 | 13.31 | 93 |
| Mean | 7.88 | 6.44 | 2.37 | 14.32 | -- |
| LSD 0.05 | 0.36 | 0.42 | 0.12 | 0.57 | -- |
| CV % | 3.20 | 4.60 | 3.60 | 2.80 | -- |
| Note: Stand was 95 % for all varieties on 16-April-2003. | |||||
| Data subjected to Nearest Neighbor AOV, adjusted means reported. | |||||
| Establishment: | Seeded with a Hege 3-point hitch drill with presswheels at 16 lb/a. Eptam applied PPI at 2qt/a. 3 ton/a of lime applied fall 2000 prior to seeding. | ||||
| Plot size: | 5' x 25', 25' alleys and borders. RCBD with four reps. | ||||
| Soil type and analysis: | Hoytville silty clay, pH=6.3, P=79 lb/a, K=319 lb/a, CEC= 20, O.M.=3.3 (8/01). | ||||
| 2003 Fertilization: | No fertilization was required. | ||||
| 2003 Pest control: | Insecticide was apllied on 17-June, 16-July and 14-August for potato leafhopper control. | ||||