Alfalfa Pest Management Guidelines
UC agricultural management guidelines for control of alfalfa pests. Relative Toxicities of Insecticides and Miticides Used in Alfalfa to Natural Enemies and Honey Bees (11/06) Alfalfa Weed Photo Gallery, with Common and Scientific Names in ... [... more]
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Scientific Name: Spodoptera praefica
This pest may be abundant in alfalfa fields in the Central Valley. The caterpillar is usually black, with two prominent stripes and many narrow bright ones on each side. At maturity it is approximately 1.5 to 2 inches long. Eggs are laid in ... [... more]
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Blue Alfalfa Aphid and Pea Aphid
UC Pest Management Guidelines for Blue Alfalfa Aphid and Pea Aphid on Alfalfa. The pea aphid and the blue alfalfa aphid are large green aphids with long legs, antennae, cornicles, and cauda. They are very similar in appearance but can be ... [... more]
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Garden leafhopper: Empoasca solana
Several species of Empoasca leafhoppers occur in alfalfa. They all have the same general overall appearance: small (0.125 inch long), bright green, wedge-shaped bodies. Nymphs (immatures) also have green wedge-shaped bodies and run rapidly when ... [... more]
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Scientific Name: Loxostege spp.
Webworms are dark green caterpillars with two white stripes and black spots on their backs. They are often found within webbed leaves. They vary in size up to almost 1.5 inches in length. Webworms overwinter as larvae in the ground adjacent to ... [... more]
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Alfalfa Caterpillar
UC Management Guidelines for Alfalfa Caterpillar on Alfalfa. The yellowish-orange or whitish butterflies of the alfalfa caterpillar lay eggs on the short, new growth alfalfa that is less than 6 inches tall. Eggs hatch into green caterpillars in 3 ... [... more]
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Susceptibility of Weeds to Herbicide Control in ...
More about weeds in alfalfa: Established alfalfa Seedling alfalfa [... more]
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Mormon Cricket
Mormon crickets are not true crickets but more closely related to katydids and longhorned grasshoppers. They pass the winter as eggs in the soil, preferring barren, sandy soil in sunny locations. Eggs hatch in the first warm days of spring and ... [... more]
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Special Weed Problems in Established Alfalfa
Information about Special Weed Problems in Established Alfalfa. Several weed species found in California alfalfa fields are poisonous to livestock. The most dangerous are fiddleneck, common groundsel, poison hemlock, and yellow starthistle. Many ... [... more]
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Clover Root Curculio
Adults of the clover root curculio are slightly smaller than alfalfa weevil adults and are a mottled gray-brown with no distinct patterns. The life cycle is similar to alfalfa weevil in that the adults leave the alfalfa fields and spend the ... [... more]
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Cowpea Aphid
Cowpea aphid is readily distinguishable from other aphids inhabiting alfalfa because it is the only black aphid found infesting the crop. It is a relatively small aphid and the adult is usually shiny black while the nymph is slate gray. The ... [... more]
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in established alfalfa
Alfalfa Weed Photo Gallery with Common and Scientific Names in Established Alfalfa. W. M. Canevari, UC Cooperative Extension, San Joaquin Co. S. B. Orloff, UC Cooperative Extension, Siskiyou Co. R. G. Wilson, UC Cooperative Extension, Lassen ... [... more]
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