Tab Average visual rating of Injury of arborvitae subjected to different soil water treatments
| Soil water treatment (ml/pot) | Average visual rating of injuryz | ||
|---|---|---|---|
| Experiment 1 (1977-78 study) | Experiment 2 (1978-79 study) | ||
| 5/10/78 | 12/12/78 | 5/15/79 | |
| 400 | 1.6 | 1.6 | 1.4 |
| 100 | 2.0 | 2.0 | 1.4 |
| 50 | 3.2 | 3.4 | 3.8 |
| 100-400 Oct. 1 | — | 1.4 | 1.4 |
| 100-400 Oct. 15 | — | 1.6 | 2.0 |
| 100-400 Nov. 1z | 2.2 | 1.6 | 2.0 |
| 50-400 Oct. 1 | 3.2 | 3.0 | |
| 50-400 Oct. 15 | — | 3.4 | 3.2 |
| 50-400 Nov. 1y | 2.8 | 3.8 | 3.4 |
↵z Code of visual ratings: 1 = dark green foliage —-no visual signs of injury; 2 = foliage lacks lustre — some tissue browning (10% brown); 3 = Moderate foliage injury 10-40% foliage brown; 4 = severe foliage injury — 40% foliage brown; and 5 = plants dead.
↵y plants rewatered on November 2 in 1977-78 study