| Potato Leafhopper Resistant Trial | ||||||||||
| Total | Total | Relative Yield |
% Stand | Heighta | Injuryb |
Nymphsc | ||||
| Variety | 2002 | 2001 | 2002 | 4/16/02 | 7/1/02 | 7/26/02 | 9/5/02 | 7/1/02 | 7/26/02 |
7/26/02 |
| Commercial Seed: | Tons Dm/Acre | % mean | ||||||||
| 54H91 | 5.74 | 3.74 | 116 | 95 | 22.0 | 14.0 | 13.0 | 1.0 | 1.2 | 31.3 |
| Evergreen | 5.07 | 3.47 | 102 | 95 | 20.0 | 12.0 | 14.0 | 1.5 | 1.5 | 1.8 |
| DKA 34-20 | 4.93 | 2.72 | 100 | 91 | 19.0 | 13.0 | 13.0 | 1.8 | 2.0 | 3.3 |
| 5454 | 3.83 | 2.44 | 77 | 97 | 9.0 | 6.0 | 7.0 | 4.0 | 4.9 | 68.0 |
| 54V54 | 3.59 | 2.60 | 72 | 92 | 11.0 | 5.0 | 8.0 | 4.0 | 4.8 | 106.5 |
| Vernal | 3.22 | 2.46 | 65 | 83 | 9.0 | 4.0 | 7.0 | 4.3 | 4.1 | 58.5 |
| Experimental Seed: | Tons Dm/Acre |
% mean | ||||||||
| FG 40H111* | 5.79 | 3.51 | 117 | 92 | 16.0 | 16.0 | 17.0 | 1.0 | 1.7 | 1.1 |
| FG 4S97* | 5.77 | 3.46 | 116 | 96 | 22.0 | 15.0 | 14.0 | 1.3 | 1.2 | 0.6 |
| FG 4S98* | 5.65 | 3.41 | 114 | 94 | 21.0 | 14.0 | 15.0 | 2.3 | 1.6 | 0.8 |
| FG 40H106* | 5.65 | 3.42 | 114 | 94 | 22.0 | 15.0 | 14.0 | 1.0 | 1.2 | 1.3 |
| FG 40H124* | 5.25 | 3.46 | 106 | 94 | 21.0 | 14.0 | 16.0 | 1.0 | 1.4 | 0.1 |
| Mean | 4.95 | 3.15 | -- | 93 | 17.5 | 11.5 | 12.0 | 2.1 | 2.3 | 24.8 |
| LSD 0.05 | 0.65 | 0.65 | -- | ns | 5.2 | 1.9 | 3.0 | 0.7 | 1.0 | 39.1 |
| CV % | 9.00 | 14.30 | -- | 7 | 20.5 | 11.2 | 16.0 | 24.1 | 29.3 | 109.0 |
| MCV | 13.06 | 20.66 | -- | 10 | 29.5 | 16.1 | 22.0 | 34.9 | 42.2 | 157.4 |
| LSR | 25.12 | 50.41 | -- | 68 | 38.2 | 16.1 | 26.0 | 22.4 | 26.6 | 36.7 |
| no. of harvest | 4.00 | 2.00 | -- | -- | -- | -- | -- | -- | -- | -- |
| * Variety tested using experimental seed that may not give performance identical to that of commercially available seed. | ||||||||||
| Data subjected to Nearest Neighbor AOV, adjusted means reported. | ||||||||||
| 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. | ||||||||||
| 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: | Crosby silt loam, pH = 6.5, P = 96 lb/a, K = 252 lb/a, CEC = 8.4, O.M. = 3.1 (10/02). | |||||||||
| 2002 Fertilization: | Insecticide was applied on 26-April for alfalfa weevil control. | |||||||||
| 2002 Pest control: | Herbicide was applied 4-June for weed control. | |||||||||