Distribution and concentration of fungicides in crowns of elms injected in the root flare or trunk.
Tree pair | Injection site | Circum. (mm) | Number of sites | Quantity Injected (liters) | Time of inject. (minutes) | Coveragea twigs (%) | Concent, in twigs (Ppm) | Coveragea leaves (%) | Concent, in leaves (Ppm) |
---|---|---|---|---|---|---|---|---|---|
Carbendazim 0.1% | |||||||||
1 | root flare | 1760 | 12 | 26.4 | 11 | 9 | 1.2 | 59 | 5.0 |
trunk | 1770 | 12 | 26.6 | 5 | 22 | 1.6 | 61 | 3.5 | |
2 | root flare | 1620 | 11 | 24.3 | 6 | 37 | 2.0 | 80 | 4.0 |
trunk | 1475 | 10 | 21.1 | 6 | 57 | 1.6 | 96 | 3.0 | |
3 | root flare | 1610 | 13 | 24.2 | 7 | 18 | 1.1 | 49 | 3.1 |
trunk | 1310 | 9 | 19.7 | 10 | 47 | 1.5 | 84 | 3.8 | |
4 | root flare | 1650 | 11 | 24.8 | 5 | 44 | 5.1 | 63 | 7.9 |
trunk | 1600 | 11 | 24.0 | 5 | 11 | 1½6 | 50 | 2.7 | |
Thiabendazole 1.0% | |||||||||
— | trunk | 1660 | 11 | 24.9 | 7 | 77 | —b | — | — |
— | trunk | 1650 | 11 | 24.6 | 6 | 41 | — | — | — |
— | trunk | 1960 | 13 | 29.4 | 12 | 69 | — | — | — |