| Potato Leafhopper Resistant Trial | ||||||||||
| Total | Total | Total | Total | % Stand |
Weevila | PLH Adultsb 2001 |
Injb 2001 | |||
| Variety | 2001 | 2000 | 1999 | 2000-01 | 4/12/01 | 7-May | 18-Jun | 23-Jul | 21-Aug |
30-Jul |
| Commercial Seed: | ------- Tons Dry Matter/Acre ------- | |||||||||
| 5454 | 6.62 | 7.50 | 1.87 | 14.12 | 95 | 188 | 14.0 | 32.5 | 3.5 | 2.9 |
| Cimarron SR | 6.31 | 7.74 | 1.85 | 14.04 | 90 | 137 | 8.7 | 30.3 | 1.3 | 2.6 |
| WL 324 | 6.28 | 7.71 | 1.76 | 13.99 | 91 | 201 | 13.3 | 30.5 | 3.0 | 2.9 |
| TMF4355LH | 6.64 | 7.09 | 1.74 | 13.73 | 88 | 151 | 7.3 | 15.0 | 0.5 | 1.0 |
| FQ302HR | 6.32 | 7.08 | 1.72 | 13.40 | 93 | 159 | 9.8 | 27.3 | 2.5 | 1.8 |
| Ameriguard302+Z | 5.93 | 7.40 | 1.86 | 13.33 | 85 | 165 | 6.8 | 14.5 | 3.5 | 1.9 |
| DK131HG | 5.98 | 7.31 | 1.87 | 13.29 | 86 | 257 | 7.0 | 14.5 | 0.8 | 1.1 |
| 6310 | 5.78 | 7.47 | 1.78 | 13.25 | 89 | 176 | 6.0 | 13.0 | 2.8 | 1.4 |
| 54H69 | 5.93 | 7.16 | 1.75 | 13.08 | 90 | 163 | 11.0 | 10.3 | 2.5 | 0.5 |
| Experimental Seed: | ------- Tons Dry Matter/Acre ------- | |||||||||
| 4M32* | 6.44 | 7.44 | 1.72 | 13.88 | 88 | 169 | 6.3 | 5.3 | 1.5 | 0.0 |
| 4M16* | 6.46 | 7.24 | 1.76 | 13.70 | 86 | 153 | 4.8 | 5.3 | 2.3 | 0.1 |
| 4M30* | 6.59 | 7.04 | 1.75 | 13.63 | 89 | 169 | 7.3 | 11.0 | 1.3 | 0.5 |
| 4R37* | 6.51 | 7.11 | 1.71 | 13.61 | 89 | 128 | 10.0 | 13.3 | 3.8 | 0.5 |
| ZH9840H* | 6.26 | 7.31 | 1.67 | 13.57 | 86 | 190 | 6.5 | 7.8 | 1.5 | 0.5 |
| ZH9844H* | 6.33 | 7.20 | 1.73 | 13.53 | 86 | 188 | 4.3 | 7.5 | 1.5 | 0.5 |
| ZH9841H* | 6.24 | 7.25 | 1.68 | 13.48 | 86 | 178 | 5.5 | 14.0 | 1.8 | 0.8 |
| ZH9820H* | 6.20 | 6.94 | 1.67 | 13.14 | 86 | 132 | 7.0 | 10.8 | 1.8 | 0.9 |
| LH4* | 6.25 | 6.87 | 1.74 | 13.11 | 85 | 146 | 6.5 | 9.5 | 2.0 | 1.1 |
| PLH40* | 5.93 | 6.95 | 1.52 | 12.87 | 80 | 155 | 6.5 | 10.8 | 0.3 | 0.5 |
| Mean | 6.26 | 7.25 | 1.75 | 13.51 | 88 | 169 | 7.8 | 14.9 | 2.0 | 1.1 |
| LSD 0.05 | 0.36 | 0.42 | ns | 0.50 | 4 | 83 | 5.8 | 8.4 | 1.9 | 0.5 |
| CV % | 4.10 | 4.10 | 9.10 | 2.60 | 3 | 35 | 52.1 | 39.7 | 64.4 | 33.7 |
| no. of harvests | 4.00 | 4.00 | 2.00 | 8.00 | -- | -- | -- | -- | -- | -- |
| * 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 Number of alfalfa
weevil/5 sweeps
b Number of potato leafhoppers/5 sweeps c Potato leafhopper injury rated from 1 = least to 5 = most severe reported | ||||||||||
| Establishment: | Seeded with a Hege 3-point hitch drill with presswheels at 16 lb/a. Eptam applied PPI at 2 qt/a. | |||||||||
| Plot size: | 4' x 20', 15' alleys and borders, RCBD with four reps. | |||||||||
| Soil type and analysis: | Riddles silt loam, pH = 6.53, P =92 lb/a, K = 198 lb/a, CEC = 8 (10/00). | |||||||||
| 2001 Fertilization: | Fall applied 550 lb/a of 0-18-36. | |||||||||
| 2001 Pest control: | Herbicide was applied 28-March. | |||||||||