|
Potato Leafhopper Resistant Trial | |||||||
| Total | Total | Total | Total | Relative Yield | % Stand |
Injurya | |
| Variety | 2002 | 2001 | 2000 | 2001-02 | 2001-02 | 4/16/02 |
7/26/02 |
| Commercial Seed: | ------- Tons Dry Matter/Acre ------- | % mean | |||||
| Evergreen | 4.53 | 6.72 | 2.34 | 11.26 | 107 | 84 | 2.0 |
| DK131HG | 3.93 | 6.32 | 2.58 | 10.25 | 98 | 84 | 2.3 |
| Clean Sweep | 3.37 | 6.48 | 2.16 | 9.85 | 94 | 77 | 3.8 |
| 5454 | 3.38 | 6.05 | 2.40 | 9.43 | 90 | 85 | 5.0 |
| Experimental Seed: | ------- Tons Dry Matter/Acre ------- | % mean | |||||
| 4S86* | 5.29 | 6.92 | 2.40 | 12.20 | 116 | 91 | 1.8 |
| 3S77* | 4.75 | 6.72 | 2.50 | 11.48 | 109 | 87 | 2.0 |
| 4S92* | 4.74 | 6.71 | 2.49 | 11.45 | 109 | 89 | 1.5 |
| ZH9930H* | 3.43 | 6.20 | 2.70 | 9.63 | 92 | 84 | 2.0 |
| ZH9841H* | 3.10 | 5.77 | 2.35 | 8.87 | 85 | 69 | 4.8 |
| Mean | 4.06 | 6.43 | 2.43 | 10.49 | -- | 83 | 2.8 |
| LSD 0.05 | 0.59 | 0.61 | ns | 1.07 | -- | ns | 0.6 |
| CV % | 10.00 | 6.50 | 11.60 | 7.00 | -- | 10 | 14.3 |
| MCV | 14.57 | 9.49 | 17.03 | 10.25 | -- | 15 | 20.9 |
| LSR | 27.01 | 53.38 | 77.47 | 32.26 | -- | 57 | 16.6 |
| no of harvest. | 4.00 | 4.00 | 2.00 | 10.00 | -- | -- | -- |
| * Variety tested using experimental seed that may not give performance identical to that of commercially available seed. | |||||||
| a Potato leafhopper injury rated from 1 = least to 5 = most severe injury. | |||||||
| 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 = 6.8, P = 40 lb/a, K = 234 lbs/a, CEC = 8.4, O.M.=2.4, (11/01). | ||||||
| 2002 Fertilization: | 300 lb/a of 0-0-60 was fall applied in 2001. | ||||||
| 2001 Pest control: | Insecticide
applied 26-April for alfalfa weevil control. Herbicide was applied 4-June for weed control. | ||||||