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Common names by which it is known include annual ryegrass, a name also given to Italian ryegrass (Lolium multiflorum), rigid ryegrass, stiff darnel, Swiss ryegrass and Wimmera ryegrass. [1] It is a native of southern Europe, northern Africa, the Middle East and the Indian subcontinent and is grown as a forage crop, particularly in Australia ...
Lolium multiflorum (Italian rye-grass, [2] annual ryegrass) is a ryegrass native to temperate Europe, though its precise native range is unknown. [3] It is a herbaceous annual, biennial, or perennial grass that is grown for silage, and as a cover crop. [4] [5] It is also grown as an ornamental grass.
It is the principal grazing grass in New Zealand where some 10 million kilograms of certified seed are produced every year. There is a large range of cultivars . The primary species found worldwide and used both for lawns and as a forage crop is perennial ryegrass ( Lolium perenne ).
Lolium multiflorum, known as "annual ryegrass" in the United States, Canada and the United Kingdom and grown as a cover crop; Lolium rigidum, known as "Wimmera ryegrass" in Australia, and considered a weed when present as a contaminant in field crops but is quite productive for livestock grazing
Rathayibacter toxicus, transported by the parasitic nematode Anguina funesta, is infectious to annual ryegrass and is the principal cause of annual ryegrass toxicity (ARGT). [1] ARGT is a neurological disorder caused by R. toxicus ’ secretion of a lethal glycolipid toxin (structurally similar to tunicamycin) in infected livestock.
Annual grasslands are dominated by non-native annual grasses and forbs, with a few native perennial grass species present. These grasslands are subject to seasonal and yearly variations in species composition and productivity, which are largely controlled by the timing and amount of precipitation and temperature.
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It is commonly grown for cattle feed and, in particular, as hay for horses. It is relatively high in fiber, especially when cut late. It is considered a harsh, coarse grass little relished by livestock if cut earlier. It is considered part of the standard mix for grass hay and provides quality nutrition for horses.