| Total | Total | Total | Total | Relative Yield |
% Stand | |
| Variety | 2003 | 2002 | 2001 | 2002-03 | 2001-03 |
4/3/03 |
| Commercial Seed: | ------- Tons Dry Matter/Acre ------- | % mean | ||||
| Starbuck | 6.10 | 5.85 | 4.66 | 11.94 | 106 | 94 |
| 54V54 | 5.61 | 5.82 | 4.52 | 11.43 | 102 | 94 |
| Macon | 5.74 | 5.67 | 4.73 | 11.41 | 101 | 94 |
| WL 342 | 5.75 | 5.48 | 4.41 | 11.23 | 100 | 94 |
| DKA 42-15 | 5.60 | 5.58 | 4.11 | 11.18 | 99 | 94 |
| HybriForce-400 | 5.61 | 5.54 | 4.53 | 11.15 | 99 | 93 |
| Phirst | 5.71 | 5.44 | 4.58 | 11.15 | 99 | 95 |
| Ameristand 403T | 5.59 | 5.41 | 3.88 | 11.00 | 98 | 95 |
| 6420 | 5.57 | 5.42 | 4.23 | 10.98 | 98 | 95 |
| Radiant | 5.49 | 5.44 | 4.29 | 10.94 | 97 | 93 |
| FK 421 | 5.66 | 5.27 | 4.05 | 10.93 | 97 | 94 |
| Vernal | 5.00 | 5.80 | 4.40 | 10.80 | 96 | 92 |
| 54H91 | 5.44 | 5.26 | 4.14 | 10.70 | 95 | 94 |
| Mean | 5.70 | 5.56 | 4.37 | 11.25 | -- | 94 |
| LSD 0.05 | 0.41 | ns | ns | ns | -- | ns |
| CV % | 5.00 | 6.40 | 8.20 | 4.40 | -- | 2 |
| 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 was applied PPI at 2 qt/a. | |||||
| Plot size: | 4' x 20' , 15'alleys and borders, RCBD with four reps. | |||||
| Soil type and analysis: | Crosby silt loam, pH=6.4, P=96 lbs/s, K=252 lbs/a, CEC=8.4, O.M.=3.0, (10/02). | |||||
| 2003 Fertilization: | 300 lb/a of 0-0-60 and 100 lb/a of 0-46-0 was applied in April 2003. | |||||
| 2003 Pest control: | Insecticide was applied on 10-June, 18-July, 12-August for potato leafhopper control. | |||||