Control of crabapple rust and hawthorn rust with various fungicide treatments in the Illinois Natural History Survey arboretum, Urbana, Illinois.
| Treatment and rate/100 gal | Leaf lesion index* | |||||
|---|---|---|---|---|---|---|
| Crabapple rust | Hawthorn rust | |||||
| 1980 | 1981 | 1982 | 1980 | 1981 | 1982 | |
| Baycor 25W, 16 oz | 0.0 | 1.8 | —** | 0.0 | 0.0 | — |
| Bayleton 25W, 4 oz | — | 1.6 | 0.0 | — | 0.0 | 0.0 |
| Vangard 10W, 12 oz | 0.5 | 1.7 | — | 0.0 | 0.0 | — |
| Daconil 2787 500F, 2 pts | 2.2 | — | — | — | 1.3 | — |
| Manzate 200 80W, 24 oz | 2.5 | — | — | 1.8 | — | — |
| Difolatan 4F, 3 pts | — | — | 3.1 | — | — | 3.0 |
| Captan 50W, 2 lbs | — | — | 3.3 | — | — | — |
| Untreated check | 3.0 | 3.7 | 4.1 | 3.1 | 2.7 | 4.1 |