| Active Ingredient | Fungicide Trade name | Powdery mildew | Leaf Rust | Stripe Rust | Stagonospora leaf and glume blotch | Tan spot | Scab (Head blight) |
|---|---|---|---|---|---|---|---|
| Azoxystrobin | Quadris | F-G a | E | E | VG | E | NR |
| Mancozeb | Dithane M-45 Penncozeb | P | P | P | P | P | P |
| Propiconazole | Tilt | VG | VG | VG | VG | VG | P |
| Pyraclostrobin | Headline | G | E | E b | VG | E | NR |
| Trifloxystrobin + propiconazole | Stratego | G | VG | VG | VG | VG | NR |
| Azoxystrobin + propiconazole | Quilt | VG | E | E | VG | VG | NR |
| Tebuconazole | Folicur | G | E | E | VG | VG | P |
| Prothioconazole | Proline | G-VG | VG | VG | VG | G | |
| Prothioconazole + tebuconazole | Prosaro | G-VG | E | E | VG | VG | G |
| Metconazole | Caramba | VG | E | E | VG | VG | G |
a Greater efficacy at the higher application rates.
b Pre-infection applications are more effective.
Effectiveness of foliar fungicides is highly dependent on disease severity, disease-favorable weather, and product timing. The above ratings are for head-to-head comparisons under a best fungicide case scenario. Use decision guides to determine when to apply products.