| Total | Relative Yield | Heighta | Injuryb |
Nymphsa | |||
| Variety | 9-Jul | 20-Aug | 2002 | 2002 | 7/9/02 | 7/9/02 |
8/20/02 |
| Commercial Seed: | ---- Tons Dry Matter/Acre ---- |
% mean |
|||||
| Trailblazer 4.0 | 0.66 | 1.62 | 2.28 | 113 | 9.6 | 2.2 | 15.0 |
| 54H91 | 0.58 | 1.59 | 2.17 | 107 | 8.1 | 3.4 | 20.0 |
| 4375LH | 0.56 | 1.59 | 2.15 | 106 | 8.2 | 3.0 | 13.0 |
| Predator | 0.54 | 1.51 | 2.05 | 101 | 6.9 | 4.3 | 23.0 |
| DKA 37-20 | 0.55 | 1.49 | 2.04 | 101 | 7.5 | 4.0 | 19.0 |
| Evergreen | 0.54 | 1.47 | 2.01 | 99 | 8.0 | 3.0 | 10.0 |
| Vernal | 0.42 | 1.40 | 1.83 | 90 | 4.9 | 5.0 | 56.0 |
| 5454 | 0.42 | 1.25 | 1.67 | 83 | 5.7 | 4.8 | 45.0 |
| 54V54 | 0.38 | 1.28 | 1.66 | 82 | 4.9 | 4.9 | 45.0 |
| Experimental Seed: | ---- Tons Dry Matter/Acre ---- |
% mean | |||||
| ZH9932H* | 0.60 | 1.55 | 2.15 | 106 | 6.9 | 3.9 | 21.0 |
| Y54H71* | 0.64 | 1.49 | 2.14 | 106 | 9.6 | 1.9 | 7.0 |
| FG 41H152* | 0.54 | 1.59 | 2.13 | 105 | 8.8 | 2.4 | 12.0 |
| FG41H155* | 0.54 | 1.58 | 2.12 | 105 | 9.8 | 2.2 | 8.0 |
| O1I19CM1* | 0.60 | 1.51 | 2.11 | 104 | 10.0 | 2.5 | 22.0 |
| Mean | 0.53 | 1.50 | 2.03 | -- | 7.9 | 3.4 | 22.0 |
| LSD 0.05 | 0.16 | 0.19 | 0.27 | -- | 1.6 | 0.5 | 14.0 |
| CV % | 20.90 | 8.80 | 9.40 | -- | 14.4 | 10.8 | 44.6 |
| MCV | 29.68 | 12.56 | 13.42 | -- | 20.5 | 15.3 | 63.5 |
| LSR | 57.03 | 51.12 | 43.80 | -- | 31.4 | 16.9 | 28.6 |
| no. of harvest | -- | -- | 2.00 | -- | -- | -- | -- |
| * Variety tested using experimental seed that may not give performance identical to that of commercially available seed. | |||||||
| a Height recorded in
inches. b Potato leafhopper injury rated from 1 = least to 5 = most severe injury. c Nymph = Number of potato leafhopper nymphs collected with two pan sweeps. | |||||||
| 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 2qt/a. | ||||||
| Plot size: | 4' x 20', 15' alleys and borders. RCBD with four reps. | ||||||
| Soil type and analysis: | Brookston silt loam, pH = 6.4, P = 154 lbs/a, K = 440 lb/a, CEC = 8.4, O.M. = 4.3 (10/02). | ||||||
| 2002 Fertilization: | No fertilization was required. | ||||||
| 2002 Pest control: | Insecticide applied on 11-July at 1/3
rate for potato leafhopper suppression on stubble right after first harvest. Herbicide was applied 22-August for wed control. | ||||||