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There are various cultivars of St. Augustine grass, perennial ryegrass and tall fescue on the market that have variable resistance to gray leaf spot but none are confirmed as completely resistant. [ 3 ] [ 4 ] [ 1 ] Cultural practices to reduce stress are the next step for gray leaf spot prevention and control.
Lolium perenne, common name perennial ryegrass, [1] English ryegrass, winter ryegrass, or ray grass, is a grass from the family Poaceae. It is native to Europe, Asia and northern Africa, but is widely cultivated and naturalised around the world. Lolium perenne, showing ligule and ribbed leaf
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.
Some of these turf grass species include annual bluegrass, creeping bentgrass, Kentucky bluegrass, perennial ryegrass, fine fescue, and bermudagrass. 5 These species of grass are not the only types of turf that can be diagnosed with red thread disease but are the most common hosts. 5 Noticeable symptoms of red thread disease are irregular ...
[2] [3] It is often called ryegrass, but this term is sometimes used to refer to grasses in other genera. They are characterized by bunch-like growth habits. Lolium is native to Europe , Asia and northern Africa , as well as being cultivated and naturalized in Australia , the Americas , and various oceanic islands.
Perennial cool-season – orchardgrass (cocksfoot, Dactylis glomerata), fescue (Festuca spp.), Kentucky bluegrass and perennial ryegrass (Lolium perenne) Annual warm-season – maize, sudangrass, and pearl millet; Perennial warm-season – big bluestem, Indiangrass, Bermudagrass and switchgrass.
Perennial ryegrass staggers is poisoning by peramine, lolitrem B, and other toxins that are contained in perennial ryegrass (Lolium perenne), and produced by the endophyte fungus Epichloë festucae which can be present in all parts of the grass plant, but tends to be concentrated in the lower part of the leaf sheaths, the flower stalks and seeds.
Dollar spot is most commonly found on closely mowed turfgrasses. The pathogen infects most cool and warm-season grasses throughout the world, including creeping bentgrass (Agrostis stolonifera), annual bluegrass (Poa annua), Kentucky bluegrass (Poa pratensis), perennial ryegrass (Lolium perenne), hybrid bermudagrasses (Cynodon dactylon x tranvaalensis), seashore paspalum (Paspalum vaginatum ...