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Small grains - Efficacy of foliar-applied fungicides to manage wheat disease common in mid-Atlantic region

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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
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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.
Key: E = excellent, VG = very good, G = good, F = fair, P= poor, NR = not recommended.

Guide to abbreviations

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