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HPIPM:Alfalfa
Alfalfa Insects
Authors: Frank B. Peairs[1], Michael J. Brewer & Jay D. Donahue
Because it is a protein-rich, densely growing perennial crop, alfalfa is home to many species of insects, some of which are economic pests. In the high plains region, alfalfa weevil is usually the most damaging insect, but others, such as grasshoppers, cutworms, armyworms, alfalfa caterpillars, webworms and aphids, also negatively affect production at times. Blister beetles may occasionally become a concern when present at high densities. With careful surveying and decision making, host plant resistance and cultural controls together with insecticides can prevent these insects from causing economic losses. Since alfalfa is highly attractive to honey bees and other pollinators, refer to the Pollinator Protection section for information to help avoid non-target exposure to insecticides.
- Alfalfa Blotch Leafminer
- Alfalfa Caterpillar
- Webworm, Alfalfa Looper, Armyworm
- Alfalfa Weevil
- Blister Beetles
- Cutworms
- Grasshoppers and Crickets
- Pea Aphid, Blue Alfalfa Aphid, Spotted Alfalfa Aphid
- Pea Leaf Weevil - Coming Soon
- Pea Weevil - Coming Soon
- Potato Leafhopper
- Thrips
Alfalfa Diseases
- Alfalfa Stem Nematode
- Bacterial Leaf Spot
- Damping Off, Seedling Blight
- Fungal Leaf Spot
- Phytophtora Root Rot
- Spring Black Stem
- Verticillium Wilt
- Additional diseases for which no pesticides are labeled
Alfalfa Weeds
Broad Leaf Weeds
Chickweeds
- Common chickweed
- Mouse-ear chickweed
- Coast fiddleneck
- Cocklebur
- Common groundsel
- Common knotweed
- Common lambsquarters
- Common mallow
- Common milkweed
- Common purslane
- Curly dock
- Dandelion
- Dodder
- Field bindweed
- Henbit
- Jimsonweed
- Hoary cress
- Kochia
Mustards
Nightshades
- Black nightshade
- Hairy nightshade
- Silverleaf nightshade
- Persian speedwell
- Pineappleweed
- Prickly lettuce
- Prostrate knotweed
- Redroot pigweed
- Shepherds purse
- Annual sowthistle
