An arborist’s work in testing four cultivars in a single series of plantings.
| Year | Work | Hours |
|---|---|---|
| 1 | Map and measure 80 trees (4 cultivars × 4 plots × 5 trees each) | 7 |
| 4 | Measure 76 trees (4 died) | 9 |
| 8 | Measure 74 trees | 9 |
| 12 | Measure 72 trees | 9 |
| 16 | Measure 70 trees | 9 |