| Experiment 1 | ||
| Jointed goatgrass population | Emergence (%) | t Grouping |
| A-R | 70 | A |
| B-W | 40 | B |
| C-S | 50 | B |
| LSD(0.05) = 15 | ||
| Growing season | ||
| Long | 63 | A |
| Short | 44 | B |
| LSD(0.05) = 13 | ||
| Experiment 2 | ||
| Jointed goatgrass population | ||
| A-R | 71 | A |
| B-W | 58 | B |
| C-S | 78 | A |
| LSD(0.05) = 12 | ||
| Growing season | ||
| Long | 84 | A |
| Short | 53 | B |
| LSD(0.05) = 10 | ||