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Columbia Encyclopedia entry: alfalfa
Alfalfaălfăl'fə or lucernloosûn', perennial leguminous plant (Medicago sativa) of the family Leguminosae (pulse family), the most important pasture and hay plant in North America, also grown extensively in Argentina, S Europe, and Asia. Probably native to Persia, it was introduced to the United States by Spanish colonists. Of high yield, high protein content, and such prolific growth that it acts as an effective weed control, alfalfa is also valued in crop rotation and for soil improvement because of the nitrogen-fixing bacteria in its nodules. The several varieties of the species grow well in most temperate regions except those with acid soil or poor drainage. The alfalfa belt of the United States centers chiefly in the northern and western parts of the country. Young alfalfa shoots have been used as food for humans and have antiscorbutic properties. Carotene and chlorophyll for commercial use are extracted from the leaves. Alfalfa is also called medic, the name for any plant of the genus Medicago—Old World herbs with blue or yellow flowers similar to those of the related clovers. Black medic (M. lupulina) and the bur clovers (M. arabica and M. hispida) are among the annual species naturalized as weeds in North America and sometimes also grown for hay and pasture. Alfalfa is classified in the division Magnoliophyta, class Magnoliopsida, order Rosales, family Leguminosae.
Wikipedia search results for: Alfalfa
From Wikipedia, the free encyclopedia
Alfalfa is a flowering plant in the pea family Fabaceae cultivated as an important forage crop. In the UK, Australia, and New Zealand it is known as lucerne and as lucerne grass in south Asia. It resembles clover with clusters of small purple flowers. Alfalfa is a cool season perennial legume living from three to twelve years, depending on variety and climate. The plant grows to a height of up to, and has a deep root system sometimes stretching to. This makes it very resilient, especially to droughts. It has a tetraploid genome. This plant exhibits autotoxicity, which means that it is difficult for alfalfa seed to grow in existing stands...more »
Columbia Encyclopedia search results: alfalfa
Results 1 - 10  of 50
  • alfalfa caterpillar

    Alfalfa caterpillar, larva of the alfalfa butterfly, Colias eurytheme, a member of the family Pieridae. Found throughout most of Mexico, the United States, and S Canada, it is sometimes a seri...

  • Kearns

    Kearns, uninc. town (1990 pop. 28,874), Salt Lake co., N Utah, a suburb of Salt Lake City. Alfalfa and barley are grown and cattle and sheep are raised. There is copper mining nearby.

  • hay, livestock fodder

    Hay, wild or cultivated plants, chiefly grasses and legumes, mown and dried for use as livestock fodder. Hay is an important factor in cattle raising and is one of the leading crops of the Uni...

  • Brawley

    Brawley, city (1990 pop. 18,923), Imperial co., SE Calif.; inc. 1908. It is situated in the Imperial Valley, SE of the Salton Sea. Winter fruits and vegetables, cotton, alfalfa, corn, and suga...

  • Great Bend

    Great Bend, city (1990 pop. 15,427), seat of Barton co., central Kans., on a bend in the Arkansas River; settled and inc. 1872. It is a trade and shipping center for a wheat and oil region. Al...

  • Nukus

    Nukus, city (1989 pop. 170,362), capital of Karakalpak Republic, W Uzbekistan, in the Khwarazm oasis and on the Amu Darya River. It has alfalfa and food-processing and other light industries, ...

  • Pulaski

    Pulaski, town (1990 pop. 9,985), seat of Pulaski co., SW Va.; inc. 1886. It has industries that manufacture textiles, clothing, machinery, metal products, furniture, and trucks. Agricultural p...

  • Aguascalientes, state, Mexico

    Aguascalientes [Span.,=hot waters], state (1990 pop. 719,659), 2,007 sq mi (5,200 sq km), central Mexico, on the Anáhuac plateau. Aguascalientes is the capital. Cattle are raised on the wide p...

  • Catamarca

    Catamarca, city (1991 pop. 110,489), capital of Catamarca prov., NW Argentina. It is an agricultural and mining center located in a valley that produces wine, cotton, alfalfa, cereal, and live...

  • Red Wing

    Red Wing, city (1990 pop. 15,134), seat of Goodhue co., SE Minn., on the Mississippi River at the head of Lake Pepin; inc. 1857. It is a commercial and manufacturing center in the Hiawatha val...

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