Fungicides for Small-Scale Cucurbit Production


Fungicides registered for small-scale use on cucurbit crops (cucumbers, melons, winter squash, summer squash, etc.) in Utah, organized by mode of action (MoA).

Primary Active Ingredient

Brand Name

MoA

Residual Days

Gummy Stem Blight

Pythium Root + Fruit Rot

Powdery Mildew

copper octanoate

Epsoma Organic Copper Soap RTU,

Monterey Liquid Copper RTU,

Natural Guard Copper Soap Concentrate

M1

10

X

X

 

Bonide Captain Jack’s Liquid Copper Fungicide Concentrate, Bonide Captain Jack’s Liquid Copper Fungicide RTS, Bonide Captain Jack’s Liquid Copper Fungicide RTU

M1

 

X

 

copper sulfate

Bonide Copper Spray/Dust

M1

7

X

X

 

sulfurO

Bonide Plant Fungicide Dust, GardenTech Sevin Sulfur, Dust 2-in-1 Disease and Insect Control, Safer Garden Fungicide Concentrate, Safer Garden Fungicide RTU

M2

7-10

 

 

X

sulfurO + pyrethrinsO

Natria Insect, Disease, & Mite Control RTS, Natria Insect, Disease, & Mite Control RTU

M2/3A

10-14

 

 

X

mancozeb

Bonide Mancozeb Flowable w/ Zinc Concentrate

M3

7-10

X

 

 

chlorothalonil

Bonide Fung-onil RTU

M5

7-14

X

suppress

 

Bonide Fung-onil Concentrate, Ferti-lome Broad Spectrum Landscape & Garden Fungicide, Ferti-lome Broad Spectrum Landscape & Garden Fungicide RTU, GardenTech Daconil Fungicide Concentrate, GardenTech Daconil Fungicide RTU, Hi-Yield Vegetable, Flower, Fruit, and Ornamental Fungicide

X

 

 

myclobutanil

Ferti-lome F-Stop Lawn & Garden Fungicide Concentrate, Ferti-lome F-Stop Lawn & Garden Fungicide RTS

3

14

 

 

X

propiconazole

Bonide INFUSE Disease Control Concentrate

3

14

 

 

X

pyrethrinsO

Ferti-lome Triple Action O, Ferti-lome Triple Action RTS, Ferti-lome Triple Action PLUS RTO

3A

5-7

 

 

X

Bacillus amyloliquefaciens strain D747O

Bonide Revitalize Concentrate, Bonide Bio RTU

MBCA

7

 

 

X

Note: All products listed in this table are registered trademarks. The list is not all-inclusive, but provides examples of products that are available for small acreage and home use. Always review the product label for the specific crop you are treating, targeted pests, safety information, and preharvest intervals. All product information was reference in 2023 from various major personal-use pesticide suppliers.
O = Organic Active Ingredient