Aspergillus Ear Rot

Aspergillus ear rot is caused by a fungus. Besides directly reducing yield through damaged kernels, it can produce mycotoxins which are dangerous for humans and ...

Bacterial Leaf Blight (Soybean)

Bacterial blight is the most common bacterial disease in soybeans, rarely causing significant yield losses. It is very similar in appearance to bacterial pustule, but ...

Bacterial Pustule (Soybean)

Bacterial pustule is a common disease in moist, warm areas. It is not known to be a significant factor in yield loss due to resistant ...

Barnyardgrass

Barnyardgrass is a summer annual grass weed that prefers moist, compact soils. It propagates via seeds, with a single plant able to produce over 7000 ...

Bean Leaf Beetle

Bean leaf beetles are tiny insects native to North America. They primarily feed on legumes, including soybeans, green beans, and clover.

Bird-Cherry Oat Aphid

Bird-cherry oat aphids are a tiny pest of small grains such as wheat and oats.

Black Cutworm

Black Cutworms have a very widespread distribution and can be a singificant pest of corn, soybeans, grains, and other crops. Cutworms get their name from ...

Bristly Starbur

Bristly starbur is an invasive annual herb that grows to between 8 and 25 inches tall. It is known for its ability to propogate by ...

Bronzed Cutworm

Bronzed cutworms prefer to feed on grasses, but will also feed on other small seedlings. They are most commonly found in fields that were previously ...

Brown Marmorated Stink Bug

The brown marmorated stink bug (BMSB) is native to Asia but was recently introduced to the east coast of the United States. As a foreign ...

Brown Spot (Soybean)

Brown spot is a common leaf disease and is easily confused with soybean rust due to the similarity in symptoms. Yield loss is generally low ...

Brown Stem Rot (Soybean)

Often confused with SDS, brown stem rot is a common disease in soybeans that is known to cause significant damage. It is most easily identified ...

Brown Stink Bug

Brown stink bugs are found throughout North America. They are a pest of row crops such as corn, soybeans, and vegetables and also of fruit ...

Buffalobur

Buffalobur is an aggressive bush-like annual weed that is covered in sharp spikes and is toxic to animals. It prefers dry soils but will grow ...

Canada Thistle

Canada thistle is a perennial weed with a deep, robust root system which allows it to withstand considerable above-ground stress.

Cercospora Leaf Blight

Cercospora leaf blight is caused by the same fungus that results in purple seed stain and is characterized by what appears to be sunburned leaves ...

Cereal Leaf Beetle

These small beetles are native to Europe and Asia but immigrated to the United States in the 1960s. They are a potentially severe pest of ...

Charcoal Rot (Soybeans)

Charcoal rot in soybeans is a more recently discovered disease that has proven to be extremely impactful on yields. It is more prominent in the ...

Codling Moth

Codling moth was once the greatest insect pest in the United States and continues to be a major pest. It is distributed world-wide and attacks ...

Common Cocklebur

Common cocklebur is a highly competitive annual weed. It can grow to 6ft in height and produces burs which cling to animals.

Common Lambsquarters

Common lambsquarters is a rapidly growing annual broadleaf plant that emerges mostly in mid to late spring as well as throughout the summer. It often ...

Common Milkweed

Milkweed is an erect perennial herb that is commonly associated with monarch butterflies. It is easily identified by a sticky white sap that oozes from ...

Common Ragweed

Common ragweed is a widespread noxious weed which can be highly competitive with crops (especially soybeans). Unlike its cousin, the giant ragweed, the common ragweed ...

Common Rust

Common rust is a fungal disease of corn. It thrives under cool, humid conditions. It causes the most damage to younger corn and hence is ...

Common Sunflower

The common sunflower is an annual herb that grows to a height of between 1.5 and 8 feet. It is easily identified by it ...

Corn Earworm

Corn earworm larva feed on a large number of crops, including corn, tomatoes, and cotton making them a significant pest. They overwinter in the southern ...

Corn Flea Beetle

Corn flea beetles are an early season pest of corn. They are a carrier of Stewart's wilt, which is often more serious than the ...

Corn Leaf Aphid

The corn leaf aphid is a relatively minor pest of corn, sorghum, and small grains. It has a very wide distribution range.

Crabgrass

Crabgrass is a branching annual grass weed. A single plant can produce 150,000 seeds. Besides seeds, crabgrass also spreads through tillering. Seeds germinate best ...

Crane Fly Larva

The larvae of crane flies have a similar appearance to other damaging larvae like black cutworms. However, most species are harmless and feed on decaying ...

Cressleaf Groundsel

This winter annual thrives in moist conditions and blooms in the early spring with beautiful yellow flowers.

Curly Dock

Curly dock is a broadleaf perennial weed related to buckwheat. It has a deep taproot which allows it to survive dry conditions. A single plant ...

Dandelion

Dandelions are a perennial broadleaf weed with a deep taproot that allows them to survive considerable above-ground stress. They are most often a problem in ...

Dingy Cutworm

Dingy Cutworms are one of several cutworm species which can be a singificant pest of corn, soybeans, grains, and other crops. Cutworms get their name ...

Diplodia Ear Rot

Diplodia ear rot is caused by a fungus that also infects stalks.

Diplodia Stalk Rot

Diplodia stalk rot is caused by a fungus that infects stalks and ears of corn after silking. It has been known to reduce yield potential ...

Downy Mildew (Soybeans)

Downy mildew is a common diease in soybeans but is rarely known to cause severe losses. The greatest issue caused by this disease is related ...

Eastern Black Nightshade

Eastern black nightshade is an annual broadleaf weed. Like other nightshade plants, it contains the toxin Solanine which is posionous for both humans and animals.

English Grain Aphid

English grain aphids are a tiny pest of small grains and are found throughout the grain growing regions of the United States and Canada. Like ...

European Black Nightshade

European black nightshade is an annual broadleaf weed. Like other nightshade plants, it contains the toxin Solanine which is posionous for both humans and animals.

European Corn Borer

European corn borer larvae are a major pest of corn. It was introduced into the U.S. in the early 1900's and is now ...

Eye Spot (Corn)

Eyespot is a fungal disease most common throughout the northern midwest, borne through corn residue. It is known to cause significant yield loss in susceptible ...

Fall Armyworm

Fall armyworm larva are known for their voracious feeding habits, moving in large groups at night and decimating whatever crops are in their way. It ...

Fall Panicum

Fall panicum is an annual grass that tends to grow in disturbed areas with moist soil. It can grow up to 4 feet in height ...

Field Bindweed

Field bindweed is a perennial weed in the morningglory family. It forms a deep, extensive root system that makes it difficult to control. It prefers ...

Field Sandbur

Considered to be a noxious weed in some states, field sandbur is an annual grass known for its sharp, spiny seed pods. It grows best ...

Fire Blight

Fire blight is a bacterial disease which infects apples and pears resulting in a characteristic burnt appearance and significant loss of fruit. Severe infections can ...

Frogeye Leaf Spot (Soybean)

Frogeye leaf spot is a prevalent soybean disease in the southern U.S. but has been known to move throughout the northern states as well ...

Fusarium Ear Rot

Fusarium ear rot is caused by a fungus that also infects stalks. It is closely related to gibberella ear rot. Besides directly reducing yield through ...

Giant Foxtail

Foxtails are summer annual grasses which get their name from their large, fuzzy seed heads. The giant foxtail is the most competitive species and can ...

Giant Ragweed

Giant ragweed is a major pest known for its rapid growth rate and large size (6-20 ft in height) which allow it to tower over ...

Gibberella Ear Rot

Gibberella ear rot is caused by a fungus that also infects stalks. It is closely related to fusarium ear rot. Besides directly reducing yield through ...

Gibberella Stalk Rot

Gibberella stalk rot is caused by a fungus that infects stalks and ears of corn after silking. It has been known to reduce yield potential ...

Glassy Cutworm

Named for their transluscent skin, glassy cutworms can be a singificant pest of corn, soybeans, grains, and other crops. Cutworms get their name from their ...

Grape Colaspis

Grape colaspis larvae are a relatively minor pest of corn, soybeans, timothy, grapes, strawberries, and other crops.

Grasshopper

Grasshoppers are general feeders which are occasionally a significant pest of field crops and are found throughout the world. They are most likely to be ...

Gray Leaf Spot

Gray leaf spot is a potentially serious fungal disease of corn. It is most serious during prolonged warm, humid, and wet conditions.

Green Cloverworm

Green cloverworms are a pest of legumes including soybeans. They are found throughout the United States and Canada and also in Great Britain. They are ...

Green Foxtail

Foxtails are summer annual grasses which get their name from their large, fuzzy seed heads. The green foxtail grows up to 4ft in height.

Green Lacewing Larva

Green lacewing larvae are beneficial insects which primarily feed on aphids. As generalist feeders, they will also eat eggs and other small insects and larvae.

Green Stink Bug

Green stink bugs attack a wide variety of plants and are found throughout most of North America, where they are the most common stink bug ...

Head Smut (Corn)

Head smut is a systemic corn disease that causes the ears or tassels to be replaced with dark brown to black galls.

Hemp Dogbane

Hemp dogbane is a perennial broadleaf weed which spreads through seeds and laterally spreading roots. It is native to North America.

Hessian Fly

Hessian flies are a tiny pest of wheat, barley, and rye. Historically it was a significant pest but the cultural practice of planting wheat later ...

Holcus spot

Holcus spot is a relatively minor bacterial disease of corn. It infects corn leaves which have already been damaged by heavy rain, wind, or hail.

Hop Vine Borer

Hop vine borers can be a major pest of hops and corn under the right conditions. Early instar larvae prefer grasses, but later instars switch ...

Insidious Flower Bug

This tiny beneficial insect feeds on many pests, including the eggs and young of other insects and mites. It occasionally bites humans with a sharp ...

Ivyleaf Morningglory

Morningglories are a family of annual weed known for their vining characteristics and their trumpet-shaped flowers. Their vining nature can be injurous to surrounding plants ...

Japanese Beetle

Japanese beetles are beautiful in appearance but can be destructive pests of many crops, including soybeans and corn.

Jimsonweed

A member of the nightshade family, Jimsonweed is a toxic and foul-smelling summer annual that grows up to 5 feet tall. They are characterized by ...

Kochia

Kochia is a large annual herb known to be highly invasive and slightly toxic. It is characterized by by its pyramidal or rounded bushes up ...

Lady Beetle

This family of beneficial insects feeds on harmful aphids as well as mites and the eggs and young of other insects.

Maize Billbug

Billbugs are found throughout the United States and Canada. They overwinter as adults and hence are an early season pest of corn and other crops ...

Maize Chlorotic Dwarf Virus

MCDV is responsible for major crop losses that occured in the United States during the 1960s and 1970s, but has not been much of an ...

Maize Dwarf Mosaic Virus (Corn)

MDMV is a virus that is carried and transmitted by 15 different species of aphids. It develops into a mottle/mosaic pattern on leaves, often ...

Marestail

Marestail is an annual broadleaf plant, growing to a height of between 2 and 6 feet. It is considered to be a noxious weed, with ...

Mexican Bean Beetle

Mexican bean beetles are a species of lady beetle which feed on legumes, including snap beans, lima beans, and soybeans. Both the adult and larval ...

Navel Orangeworm

Navel orangeworm larvae are a major pest of almonds, pistachios, walnuts, and other tree fruits and nuts. They are native to the southwestern United States ...

Northern Corn Leaf Blight

Northern corn leaf blight is a significant corn disease. As a fungal disease, it is most serious when there are prolonged wet, humid conditions.

Northern Corn Rootworm

Northern corn rootworms are an extremely destructive pest of corn in the U.S., particulary since they attack corn both as larvae and adults.

Palmer Amaranth

Palmer amaranth is a summer annual broadleaf plant in the pigweed family that is considered to be an invasive species. It is highly competitive with ...

Peach Twig Borer

As its name suggests, the peach twig borer is a significant pest of peaches. They also attack other stone fruits and almonds. They are distributed ...

Penicillium Ear Rot

Penicillium ear rot is caused by a fungus. Besides directly reducing yield through damaged kernels, it can produce mycotoxins which are dangerous for humans and ...

Pennsylvania Smartweed

Pennsylvania smartweed is a summer annual weed that is often appreciated for its attractive pink flower cluster. It is native to North America and prefers ...

Physoderma Brown Spot (Corn)

Physoderma brown spot is not a serious disease in the United States. It is recognized by its small brown lesions located mainly on the leaves ...

Phytophthora Root and Stem Rot (Soybeans)

Phytophthora root and stem rot is a soil-dwelling pathogen and has been known to cause severe economic losses in soybean crops. It thrives in wet ...

Pod and Stem Blight

Pod and stem blight generally do not cause significant yield loss. It is characterized by lines of black dots arranged vertically on the stem. Phomopsis ...

Powdery Mildew (Soybeans)

Powdery mildew is a common leaf disease for soybeans and is caused by a fungus. It can easily be identified by its white, powdery coverage ...

Purple Seed Stain

Purple seed stain is caused by a fungus that infects the seed coat of soybeans, resulting in delayed germination. The greatest loss in regards to ...

Red Root Rot (Corn)

Red root rot is a late season corn disease that turns roots a reddish color and is known to reduce yield up to 20 percent ...

Redroot Pigweed

Redroot pigweed is a summer annual broadleaf plant that thrives in open areas with plenty of sunlight. Characterized by its pinkish base base and taproot ...

Russian Thistle

The Russian thistle is an invasive annual taproot forb known as an iconic symbol of the American West: the tumbleweed. It grows up to 3 ...

Sandhill Cutworm

As their name implies, sandhill cutworms prefer sandy soil. Like other cutworms, they damage a wide variety of plants by cutting them off at the ...

Sclerotinia Stem Rot (Soybeans)

Sclerotinia stem rot is a significant factor in yield loss throughout North American soybean fields. It is characterized by its white mold that grow on ...

Seedcorn Maggot

The seedcorn maggot is an early season pest of a variety of seeds and seedlings, including corn, soybeans, and onions.

Shattercane

Shattercane is a rapidly growing annual grass that can grow up to 12 feet tall, known to significantly reduce yield if left unchecked. It is ...

Slugs

Slugs are the shell-less cousins of snails. They are not picky eaters, and will eat many kinds of plants including most crops. There are many ...

Southern Rust

Southern rust is a potentially significant fungal disease of corn. It thrives under hot, humid conditions and hence is more common in the southern United ...

Southwestern Corn Borer

The southwestern corn borer is similar in behavior to European Corn Borer and can cause significant yield loss in corn and sorghum. It has 2-3 ...

Soybean Aphid

As their name suggests, these tiny insects are a pest of soybeans. Due to their very short generation time (2-3 days), the population within a ...

Soybean Mosaic Virus

SMV is a virus spread by aphids that causes plants to be stunted and often result in lower quality seed. In some areas it is ...

Soybean Rust

Soybean rust appeared in the United States in 2001 and has become a considerable threat to the production of soybeans. It causes leaves to be ...

Soybean Seedling Rots and Blights

Soybean seed rots and blights can have big implications on a farming operation, causing seeds to rot in the ground. The lack of emergence is ...

Soybean Thrips

Thrips are a common but relatively minor pest of soybeans. They are most serious early in the season in fields that are also suffering drought ...

Soybean Vein Necrosis Virus

SVNV is a relatively new virus capable of causing serious damage in soybeans. It is spread by soybean thrips and causes considerable loss of foliage ...

Spotted Wing Drosophila

Spotted Wing Drosophila is a vinegar fly originally from southeast Asia that was recently introduced to the United States. It is a major pest globaly ...

Stalk Borer

As their name implies, stalk borer larvae bore into stalks and stems and feed on the plant from the inside, causing considerable damage or death ...

Stem Canker (Soybeans)

Stem canker is a soybean disease that attacks and kills lower parts of the main stem. It can cause premature death in soybean fields, decreasing ...

Stewart's Wilt and Leaf Blight

Stewart's wilt is a bacterial disease which affects corn. It overwinters inside the gut of corn flea beetles so its severity is linked to ...

Stinkgrass

Stinkgrass is a summer annual grass that grows 1 to 2.5 feet tall. It is known for its distinctive odor, which usually repels animals ...

Sudden Death Syndrome

SDS is a soybean disease caused by a soil-dwelling fungus that inhabits fields throughout the Midwest and rapidly kills infected plants. It has been known ...

Tall Morningglory

Morningglories are a family of annual weed known for their vining characteristics and their trumpet-shaped flowers. Their vining nature can be injurous to surrounding plants ...

Trichoderma Ear Rot

Trichoderma ear rot is caused by a fungus. It is favored by wet conditions at or shortly after silking and also by insect damage.

True Armyworm

Armyworm larvae are found throughout the United States east of the Rockies. They are an occasional pest of corn and small grains.

Two-Spotted Spider Mite

Two-spotted spider mites are tiny late-season pests of corn. They are most numerous in hot, dry weather.

Variegated Cutworm

Unlike other cutworms, variegated cutworms primarily feed on foliage. They attack a wide variety of plants, and can be a major agricultural pest. They hide ...

Velvetleaf

Velvetleaf is an annual broadleaf plant that grows between 3 and 8 feet tall. It is known for the soft hairs that cover its exterior ...

Western Bean Cutworm

Western bean cutworms were initially a problem in Iowa but have since spread throughout the corn belt. They are a late season pest of primarily ...

Western Corn Rootworm

Western corn rootworms are an extremely destructive pest of corn in the U.S., particulary since they attack corn both as larvae and adults.

White Grub

White grubs are the soil-dwelling larval form of several types of beetles including May/June beetles and Japanese beetles. They can live in the soil ...

Wild Buckwheat

Wild buckwheat is an annual vining weed that appears similar to bindweeds and morningglories. It is highly competitive, particularly in dry conditions, and prefers cultivated ...

Wild-proso Millet

Wild-proso millet is a warm-season annual grass that grows 1 to 6 feet tall. Not to be confused with the domestic proso millet that is ...

Wireworms

Wireworms are the larval stage of click beetles. They are an early season pest of corn and other field crops and feeds on seeds and ...

Yellow Foxtail

Foxtails are summer annual grasses which get their name from their large, fuzzy seed heads. The yellow foxtail grows up to 2ft in height.