Onion - Commercial Fungicides
Fungicides registered for Commercial use on Onions in Utah, organized by Mode of Action (MoA).
| Active Ingredient | Brand Name | MoA | Residual (days) | Purple Blotch | Stemphylium Leaf Blight | Botrytis Neck Rot | Pink Root |
|---|---|---|---|---|---|---|---|
| basic copper sulfate | Cuprofix | M1 | 7 | X | |||
| copper hydroxide | Champ WGOB, Kocide, Nu-cop, PrevistoOB | M1 | 7 | X | |||
| copper oxychloride + copper hydroxide | Badge SC | M1 | 7 | X | |||
| copper oxychloride + basic copper sulfate | C-O-C-S WDG | M1 | 7 | X | |||
| copper sulfate pentahydrate | MastercopOB | M1 | 7 | X | |||
| copper hydroxide + mancozeb | Mankocide | M1/M3 | 7 | X | |||
| mancozeb | Dithane, Manzate, Penncozeb, Roper | M3 | 7 | X | |||
| chlorothalonil | Bravo, Echo, Equus, Initiate | M5 | 7 | X | X | ||
| chlorothalonil + azoxystrobin | Quadris Opti | M5/11 | 7 | X | X | ||
| iprodione | Meteor, Nevado, Rovral | 2 | 7-14 | See label for listed diseases | |||
| propiconazole | Amtide, Bumper, Fitness, Propi-star, Propimax, Shar-shield, Tilt, Topaz | 3 | 7 | X | |||
| tebuconazole | Monsoon, Orius, Tebu-crop 3.6F, Tebuzol 3.6F, Toledo 3.6F | 3 | 10 | X | |||
| difenoconazole + benzovindiflupyr | Aprovia Top | 3/7 | 7 | X | X | ||
| difenoconazole + cyprodinil | Inspire Super | 3/9 | 7 | X | X | ||
| difenoconazole + azoxystrobin | Quadris Top | 3/11 | 7 | X | X | ||
| propiconazole + azoxystrobin | Quilt | 3/11 | 7 | X | |||
| mefenoxam + chlorothalonil | Ridomil | 4/M5 | 7 | X | |||
| boscalid | Endura | 7 | 7 | X | |||
| penthiopyrad | Fontelis | 7 | 7 | X | X | X | |
| boscalid + pyraclostrobin | Pristine | 7/11 | 14 | X | X | X | |
| fluxapyroxad + pyraclostrobin | Merivon Xemium | 7-11 | 7-14 | X | X | X | |
| cyprodinil | Vangard | 9 | 7 | X | X | ||
| pyrimethanil | Scala | 9 | 7 | X | X | ||
| pyrimethanil + fluopyram | Luna Tranquility | 9/7 | 7-14 | X | X | ||
| cyprodinil + fludioxonil | Switch | 9/12 | 7 | X | X | X | |
| azoxystrobin | Quadris, Satori | 11 | 7 | X | |||
| fenamidone | Reason | 11 | 5 | X | |||
| pyraclostrobin | Cabrio | 11 | 7 | X | |||
| famoxadone + cymoxanil | Tanos | 11/27 | 5 | X | |||
| fluazinam | Omega | 29 | 7 | X | X | ||
| fosetyl-al | Aliette, Linebacker | 33 | 7 | X | |||
| Bacillus amyloliquefaciens strain F273 | AmplitudeOB | 44 | 5-7 | X | |||
| Bacillus subtilis strain QST 73 | CeaseOB SerenadeOB | 44 | 7 | See label for listed diseases | |||
| extract of Reynoutria sachalinensis | RegaliaOB | NC | 7-14 | X | X | X | |
| hydrogen dioxide | OxidateB | NC | 5 | X | |||
B= Biopesticide
R= Restricted Use
O= Organic
Note: All brands are registered trademarks. The brands listed in this table are not all-inclusive, but are meant to provide examples of products for these crops in Utah. Always check the label for the specific crop you are treating, application and safety information, and protection and pre-harvest intervals.