| Controls | |||
|---|---|---|---|
| % Leaf scorch | |||
| Tree # | 8/82 | 7/83 | 8/83 |
| 34 | >90 | 50 | 90 |
| 35 | <10 | 10 | >10 |
| 36 | <10 | 10 | 40 |
| 37 | <10 | 10 | 10 |
| 38 | 40 | 10 | 100 |
| 39 | >50 | 10 | 80 |
| 40 | 75 | 80 | 100 |
| 41 | >20 | 0 | 50 |
| 42 | <10 | 0 | 10 |
| 43 | 80 | 0 | 100 |
↵a August, 1982; Mauget, 40 mg a.i./cm dbh. June, 1983; Mauget, 50 mg a.i./cm dbh.
↵b August, 1982; pipette, 40 mg a.i./cm dbh. June, 1983; Mauget, 50 mg a.i./cm dbh.
↵c August, 1982; pipette, 80 mg a.i./cm dbh. June, 1983; Mauget, 80 mg a.i./cm dbh.
↵d 10 indicates negligible symptoms.
↵e = less than.
↵f Tree killed by Dutch elm disease.
↵g = greater than.
↵h Tree removed tor right-ot-way clearance.