Diseases, insects and weeds

Choose a crop below to see diseases, insects & weeds.

Barley

Canola

Corn

Fruits

Potatoes

Pulses

Soybeans

Wheat

Green leaf with brown lesions along veins

Anthracnose

Anthracnose

Frogeye leaf spot

Frogeye leaf spot

Frogeye leaf spot

Iron deficiency chlorosis in soybeans

Iron deficiency chlorosis

Iron deficiency chlorosis

Plant wilting and dying with PRR

Phytophthora root rot

Phytophthora root rot

Pod & stem blight. Source: OMAFRA

Pod and stem blight

Pod and stem blight

Powdery mildew

Powdery mildew

Septoria brown spot on soybeans

Septoria brown spot

Septoria brown spot

soybean root showing small cysts

Soybean cyst nematode

Soybean cyst nematode

Rust on soybean leaves

Soybean rust

Soybean rust

Yellow speckling on soybean leaves

Sudden death syndrome

Sudden death syndrome

White mould on soybeans

White mould

White mould

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Alfalfa weevil

Alfalfa weevil

Adult bean leaf beetle

Bean leaf beetle

Bean leaf beetle

European Chafer white grub

European chafer

European chafer

Potato leafhopper

Potato leafhopper

Potato leafhopper

Two maggots on cotyledon

Seedcorn maggot

Seedcorn maggot

Nymphs on soybeans

Soybean Aphid

Soybean Aphid

Western bean cutworm larva on corn

Western bean cutworm

Western bean cutworm

wireworm larvae

Wireworms

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Barnyardgrass

Barnyardgrass

Bindweed, field

Bindweed, field

Canada fleabane

Canada fleabane

Canada Thistle

Canada Thistle

Canola, Volunteer

Canola, Volunteer

Cleavers

Common Chickweed

Common Chickweed

Crabgrass, large (aka hairy)

Crabgrass, large (aka hairy)

Dandelion

Downy brome

Downy brome

Flixweed

Foxtail barley

Foxtail barley

Foxtail, giant

Foxtail, giant

Foxtail, green

Foxtail, green

Foxtail, yellow

Foxtail, yellow

Hawk's-beard, Narrow-leafed

Hawk's-beard, Narrow-leafed

Hempnettle, common

Hempnettle, common

Horsetail, field

Horsetail, field

Japanese Brome

Japanese Brome

Kochia

Ladysthumb

Lamb's-quarters

Lamb's-quarters

Mallow, common

Mallow, common

Milkweed, common

Milkweed, common

Mustard, wild

Mustard, wild

Mustard, wormseed

Mustard, wormseed

Nutsedge, yellow

Nutsedge, yellow

Old Witchgrass

Old Witchgrass

Persian Darnel

Persian Darnel

Pigweed, redroot

Pigweed, redroot

Proso millet

Proso millet

Purslane, common

Purslane, common

Quackgrass

Ragweed, common

Ragweed, common

Ragweed, giant

Ragweed, giant

Russian Thistle

Russian Thistle

Shepherd's-purse

Shepherd's-purse

Smartweed

Smartweed, green

Smartweed, green

Smooth Crabgrass

Smooth Crabgrass

Sowthistle, perennial

Sowthistle, perennial

Spurge, leafy

Spurge, leafy

Stinkweed

Stork's bill

Stork's bill

Toadflax

Velvetleaf

Waterhemp

Wild buckwheat

Wild buckwheat

Wild oats

Wirestem muhly

Wirestem muhly

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