Produce Degradation Pathways and Prevention

Role of Pesticides in Produce Production, Preservation, Quality, and Safety 359

TABLE 11.7
Examples of Fungal Diseases on Vegetables and Fungicides Used for Their
Control in the U.S.

Commodity Disease/Fungus Infected Plant Parts Fungicides

Beans,
peas

White mold

Sclerotinia sclerotiorum

Blossoms, stems,

leaves, pods

Benomyl, chlorothalonil,
dicloran, iprodione, maneb,
thiophanate-methyl
Carrots, parsley Alternaria leaf blight
Alternaria dauci

Seedlings, leaves Azoxystrobin, benomyl,
chlorothalonil, iprodione
Celery Late blight
Septoria apiicola
Early blight
Cercospora apii

Leaves Benomyl, chlorothalonil,

maneb, propiconazole

Cole
vegetablesa

Alternaria leaf spot

Alternaria brassicae

Seedlings, leaves Chlorothalonil, maneb

Downy mildew

Peronospora parasitica

Seedlings, leaves Chlorothalonil, copper
hydroxide, fosetyl-Al,
maneb, mefenoxam
Cucurbitsb Gummy stem
blight/black rot
Didymella bryoniae
Phoma cucurbitacearum

Seedlings, leaves,

stems, fruits

Azoxystrobin, benomyl,
chlorothalonil, copper
hydroxide, mancozeb,
thiophanate-methyl
Lettuce Bottom rot
Rhizoctonia solani

Leaves Iprodione, vinclozolin

Onions Downy mildew
Peronospora destructor

Leaves Azoxystrobin, chlorothalonil,
copper sulfate, fosetyl-Al,
mancozeb, maneb,
mefenoxam
Peppers Phytophthora blight
Phytophthora capsici

Seedlings, stems,

leaves, fruits

Copper hydroxide, maneb,
mefenoxam metalaxyl
Potatoes,
tomatoes,
eggplants

Late blight

Phytophthora infestans

Early blight

Alternaria solani

Leaves, stems,

tubers, fruits

Azoxystrobin, chlorothalonil,
cymoxanil, dimethomorph,
mancozeb, maneb, metiram,
propamocarb HCl
Spinach Downy mildew
(blue mold)
Peronospora effusa
P. farinosa, P. spinaciae

Seedlings, leaves Copper hydroxide, fosetyl-Al,

maneb, mefenoxam

Sweet corn Common rust
Puccinia sorghi

Leaves, ears Chlorothalonil, mancozeb,

maneb, propiconazole

aBrassicaceae including, e.g., broccoli, brussels sprouts, cabbage, Chinese cabbage, cauliflower, kale,
kohlrabi.
bCucumbers, zucchini, squash, gourds, pumpkins, watermelons, etc.

Source:National Scientific Foundation Center for Integrated Pest Management and USDA Crop Profiles
Web site, available at http://pestdata.ncsu.edu/cropprofiles/.