[R] Lolium perenne L. (Poaceae).
Fr: Ray-grass anglais; Ge: Deutsches Weidelgras; Sp: Ray-grass; It: Loglio; Pt: Erva castachana.
- Perennial forage grass, 0.1 to 1 m in height. The inflorescence is a two-rowed spike (*) .
- It is sown on its own or occasionally with white clover. It is mown or used for grazing. A field of rye-grass can produce for 3 to 6 years.
- Italian rye-grass (Lolium multiflorum) is an annual or biennial species generally sown on its own, occasionally with red clover. These two species easily form hybrids.
- It is generally sown in spring from March to May; a first cut occurs at the end of June and 2 or 3 other cuts may be possible before winter. In the following years, rye-grass may be cut at the 20-cm stage, then used as hay or ensiled after being cured for 30 days.
- Diseases: as for forage grasses.
- Principal European pests: those of forage grasses. Contarinia lolii Metcalfe (Dip., Cecidomyiidae) attacks the inflorescence.
* Rye-grass ear (Minost C.)
a: leaf narrow (2-4 mm); b: stem; c: rachis; d: side spikelet with one glume; e: terminal spikelet with 2 glumes.
HYPPZ on line: Species (scientific names), Pests (common names), Glossary, Crops.
HYP3 : HYPP Phytopathology.