Cucumber, Melon, Pumpkin, Squash -
Commercial Fungicides
Fungicides registered for Commercial use on Cucumber, Melon, Pumpkin, and Squash in Utah, organized by Mode of Action (MoA). For treatment on other cucurbits, always check the label first.
| Active Ingredient | Brand Name | MoA | Residual Days | Powdery Mildew | Gummy Stem Blight/Black Rot |
|---|---|---|---|---|---|
| copper hydroxide | Kocide 2000, PrevistoO | M1 | 5 | X | X |
| copper oxychloride/copper hydroxide | Badge SC | M1 | 5 | X | X |
| copper sulfate | Cuprofix Ultra | M1 | 5 | X | X |
| copper hydroxide + mancozeb | Mankocide | M1/M3 | 5 | X | X |
| sulfur | CosavetOB, Microthiol DisperssOB, Micro SulfOB, ThioluxO | M2 | 5 | X | X |
| chlorothalonil | Bravo, Echo, Equus | M5 | 7-14 | X | X |
| chlorothalonil +oxathiapoprolin | Orondis Opti | M5/U15 | 7-14 | X | X |
| thiophanate-methyl | Incognito, Topsin | 1 | 10-14 | X | X |
| tebuconazole | Monsoon, Orius, Tebu-crop, Tebuzol, Toledo | 3 | 7-14 | See label | See label |
| benzovindiflupyr + difenoconazole | Aprovia Top | 3/7 | 7-14 | X | X |
| difenoconacole + cyprodinil | Inspire Super | 3/9 | 7-14 | X | X |
| mefenoxam + chlorothalonil | Ridomil Gold Bravo SC | 4/M5 | 7-14 | X | |
| boscalid | Endura | 7 | 7-14 | X | |
| penthiopyrad | Fontelis | 7 | 7-14 | X | X |
| boscalid + pyraclostrobin | Pristine | 7/11 | 7-14 | X | X |
| fluxapyroxad + pyraclostrobin | Merivon | 7/11 | 7-14 | X | X |
| cyprodinil + fludioxonil | Switch | 9/12 | 7-14 | X | X |
| azoxystrobin | Quadris, Satori | 11 | 7-14 | X | X |
| kresoxim-methyl | Sovran | 11 | 7-14 | X | X |
| pyraclostrobin | Cabrio | 11 | 7-14 | X | X |
| azoxystrobin + mancozeb | Dexter Max | 11/M3 | 7-14 | X | |
| polyoxin D zinc salt | Affirm, Ph-D | 19 | X | X | |
| fluazinam | Omega 500 | 40 | 5-7 | X | X |
| Bacillus mycoides | LifeGardOB | 44 | 5-7 | X | X |
| Bacillus subtilis | Serenade ASOB | 44/NC | 5-7 | X | X |
| extract of Reynoutrai Sachalinensis | Regalia CGBOB | NC | 5-7 | X | X |
B= Biopesticide
O= Organic
R=Restricted Use
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.