rye grass

(redirected from ryegrass)
Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

rye grass,

short-lived perennial, leafy, tufted plant belonging to the family Poaceae (grassgrass,
any plant of the family Poaceae (formerly Gramineae), an important and widely distributed group of vascular plants, having an extraordinary range of adaptation. Numbering approximately 600 genera and 9,000 species, the grasses form the climax vegetation (see ecology) in
..... Click the link for more information.
 family). Two species are grown in the United States—Italian rye grass (Lolium multiflorum), the leading hay grass of Europe, and English, or perennial, rye grass (L. perenne). In parts of the United States where winters are mild, both are sowed, often mixed with other grains, for pasturage. Italian rye grass is much used for lawns in warmer regions of the United States. Perennial rye grass was probably the first of all perennial grasses to be cultivated pure for forage. Poison rye grass, or darnel (L. temulentum), reputed to be poisonous, grows in grain fields and waste places; it is thought to be the tare of the Bible. Rye grass is classified in the division MagnoliophytaMagnoliophyta
, division of the plant kingdom consisting of those organisms commonly called the flowering plants, or angiosperms. The angiosperms have leaves, stems, and roots, and vascular, or conducting, tissue (xylem and phloem).
..... Click the link for more information.
, class Liliatae, order Cyperales, family Poaceae.

Rye Grass


any one of two species of forage grasses of the genus Lolium.

The perennial, or English, rye grass (L. perenne) is a tufted winter grass that ranges in height from 15 to 70 cm. It has leafy culms, and its glabrous leaves are shiny on the underside. The inflorescence is a spike. The spikelets are many-flowered, with the edge turned toward the axis of the spike.

The perennial rye grass is distributed almost throughout Europe and in Asia Minor, Iran, India, and North America. In Great Britain it is the dominant plant of perennial pastures. The grass grows wild in meadows, in weedy places, and along fields. In the USSR it is distributed in the European portion (including the Caucasus), in Western Siberia, and in Middle Asia (on mountain meadows). The grass grows well on moderately moist loam and clay soils that are rich in humus.

The perennial rye grass is one of the best pasture and lawn plants. It grows well after grazing or mowing, and it is eaten by all types of livestock. One hundred kilograms of hay contain 48.2 feed units and 4 kg of digestible protein. The yield of hay is 50–70 quintals per hectare.

The Italian rye grass (L. multiflorum), an annual or biennial, is a leafy plant measuring 20 to 60 cm tall. In the USSR the annual variety—Westerwolds rye grass—is cultivated. This variety, which yields a large amount of forage material, is used as a green feed and hay in mixtures with oats and such leguminous herbs as vetch and field peas. It grows well on dried, decomposed peat, clay, and loam soils. The green mass and hay are eaten by all species of livestock. One hundred kilograms of hay contain 51 feed units and 4 kg of digestible protein.


Kormovye rasteniia senokosov i pastbishch SSSR, vol. 1. Edited by I. V. Larin. Moscow-Leningrad, 1950.
Shishkin, A. I. “Odnoletnii raigras kak vysokotravianoe rastenie.” Doklady Msesoiuznoi ordena Lenina akademii sel’skokhoziaistvennykh nauk, 1967, no. 1.


References in periodicals archive ?
The chemical and microbiological characteristics of Italian ryegrass prior to ensiling are given in Table 2.
2015), when providing corn grain to grazing heifers on ryegrass, observed that the intensity of defoliation was 60.
3 g DW equivalent extract/mL, shoot of cress and lettuce also exhibited a complete inhibition, whereas alfalfa, rapeseed, Italian ryegrass, barnyard grass, timothy and sand fescue showed a significant inhibition to 99.
The subsamples were collected to determine soil properties after 11 months incubation and the rest soils were passed 5 mm sieve and used in the ryegrass growth experiment.
El contenido materia seca en el momento de la cosecha fue mayor en el pasto kikuyo con respecto al ryegrass y alpiste, esto pudo deberse a que el primero se cosecho con mas dias de rebrote lo que permitio una acumulacion mayor de MS (Cuadro 1).
Endophyte-enhanced resistance in perennial ryegrass to the bluegrass billbug, Sphenophorus parvulus.
Other sown species may have a limited role in specific situations, but perennial ryegrass will rule in most areas.
The project includes a study of the physiological and pathological effects of internal fungal feed in camels produced by a substance contained in Ryegrass feed.
The team tested the human-made, ultrafine particles between 1 and 100 nanometers in size on a human food crop, the radish, and two species of common groundcovers used by grazing animals, perennial and annual ryegrass.
Germination capacity of seeds of red clover, hybrid ryegrass, and meadow fescue was determined.