Agricultural Pests
Agricultural Insects

Wheat stem sawfly
Wheat stem sawfly, Cephus cinctus Norton
Order: HymenopteraFamily: Cephidae
Description
The wheat stem sawfly is a prolific pest to wheat in Colorado, causing extensive damage in the eastern ...

Wheat curl mite
Wheat curl mite, Aceria tosichella
Order: AcariFamily: Eriophyidae
Description
Wheat curl mites are white, cigar-shaped arthropods whose bodies taper near the head and rear. All eriophyid mites ...

Sunflower headclipping weevil
Sunflower headclipping weevil, Haplorhynchites aeneus
Order: ColeopteraFamily: Attelabidae
Description
Adults of sunflower headclipping weevil (Haplorhynchites aeneus) are shiny, black, and ...

Stalk borers in corn
Stalk borers in corn
Order: LepidopteraFamily: Crambidae
Description
European corn borer (Ostrinia nubilalis)
European corn borer is native to Europe and an introduced species in North America ...

Spider mites in wheat and corn
Spider mites in wheat and corn
Order: AcariFamily: Tetranychidae
Description and life history
Brown wheat mite (Petrobia latens)
In Colorado, brown wheat mites are most active on drought ...

Pale western cutworm
Pale western cutworm, Agrotis orthogonia
Order: LepidopteraFamily: Noctuidae
Description
Adult moths are light gray and have a wingspan of about 3.8 cm (1.5 inches). The forewings have a white ...

Grasshoppers in gardens and small acreage
Grasshoppers in Gardens and Small Acreage
Order: OrthopteraFamily: Acrididae
Grasshoppers are closely related to crickets and katydids. Over 100 species of grasshoppers occur in Colorado and ...

False chinch bug
False chinch
bug, Nysius raphanus
Order: HemipteraFamily: Lygaeidae
Description
False chinch bug adults are about 3-4 mm (1/8 - 1/6 inches) long and grayish brown with slender bodies and long ...

Corn earworm in sweet corn
Corn earworm, Helicoverpa zea
Order: LepidopteraFamily: Noctuidae
Description
Corn earworm moths have a wingspan of about 2.5-3.8 cm (1-1.5 inches) and are white or tan with irregular wing ...

Black grass bugs
Black grass bugs
Order: HemipteraFamily: Miridae
Description
Black grass bugs are an assemblage of insect species from two genera, Irbisia spp. and Lapobs spp. They are small, black true bugs ...

Armyworm
Armyworm, Mythimna unipuncta
Order: LepidopteraFamily: Noctuidae
Description
The armyworm is a globally distributed pest that attacks crops in North America, from southern Canada to the ...

Army cutworm
Army cutworm, Euxoa auxiliaris
Order: LepidopteraFamily: Noctuidae
Description
The army cutworm is native to the United States and is widely distributed throughout the west. This species is ...

Aphids in alfalfa
Aphids in alfalfa
Order: HemipteraFamily: Aphididae
Description
There are four aphid species considered to be economically important pests of alfalfa (Medicago sativa) grown in Colorado: the ...

Amauromyza karli in quinoa
Amauromyza karli in quinoa
Order: DipteraFamily: Agromyzidae
Introduction and damage
Amauromyza karli is an emerging stem-boring pest of quinoa, recently identified in Colorado, Oregon, and ...

Alfalfa weevil
Alfalfa weevil, Hypera postica
Order: ColeopteraFamily: Curculionidae
Description
The alfalfa weevil was introduced to the United States from Eurasia and North Africa. In the United States, ...
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Agricultural Diseases

Wheat streak mosaic virus (WSMV)
Wheat streak mosaic virus (WSMV)
Written by: Diego Gutierrez CastilloPosted: December 28, 2023
Disease symptoms
Wheat streak mosaic virus (WSMV) disease was first reported in the United States ...

Alfalfa mosaic virus (AMV)
Alfalfa mosaic virus (AMV)
Written by: Taylor JanecekPosted: July 11, 2023
Disease symptoms
Symptoms of AMV include leaf mosaic, leaf discoloration, leaf curling or deformation, and abnormal ...
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Agricultural Weeds

Canada thistle
Canada thistle, Cirsium arvense
Also known as creeping thistle.
Weed identification:
Growth form is an erect perennial herb initially with a tap root producing far-creeping white or yellowish ...

Jointed goatgrass
Jointed goatgrass, Aegilops cylindrica
Also known as cylindrical goatgrass.
Weed identification:
Seedlings have narrow, grass-like leaves with fine hairs on the leaf margins.
Mature plants are ...

Russian knapweed
Russian knapweed, Rhapontocum repens (L.)
Also known as Turkestan thistle, creeping knapweed, mountain bluet, Russian cornflower, or hardheads.
Weed identification:
Russian knapweed is a clonal ...

Yellow toadflax
Yellow toadflax, Linaria vulgaris
Also known as butter and eggs or wild snapdragon.
Weed identification:
This weed has been found throughout North America, with a considerable number of cases ...

Redroot pigweed
Redroot pigweed, Amaranthus retroflexus
Also known as redroot amaranth, rough pigweed, common amaranth, or careless weed.
Weed identification:
Redroot pigweed is a summer annual weed that can ...

Cheatgrass
Cheatgrass, Bromus tectorum
Also known as downy brome or drooping brome.
Weed identification:
Bromus tectorum is an annual grass species native to Europe and western Asia, but widely present in ...

Kochia
Kochia, Bassia scoparia L.
This content is an excerpt from the Getting Rid of Weeds Through Integrated Pest Management website. For the complete report on Kochia please visit the growiwm.org ...
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Colorado Live Monitoring Data

Prowers County live monitoring data 2023
Prowers County live monitoring graph 2023

Burlington live monitoring data 2023
Burlington live monitoring graph 2023

Pueblo County live monitoring data 2023
Pueblo County live monitoring graph 2023

Fruita live monitoring data 2023
Fruita Colorado live monitoring graph 2023

Prowers County live monitoring data 2022
Prowers County live monitoring graph 2022

Pueblo County live monitoring data 2022
Pueblo County Live monitoring graph 2022

Burlington live monitoring data 2022
Burlington live monitoring graph 2022
No results found.
