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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

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.


B= Biopesticide
O= Organic
R=Restricted Use