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any species of the large and widely distributed genus Poa, chiefly range and pasture grasses of economic importance in temperate and cool regions. In general, bluegrasses are perennial with fine-leaved foliage that is bluish green in some species. One of the best known and most important is the sod-forming Kentucky bluegrass, or June grass (P. pratensis), believed to have been introduced from the Old World and now widely naturalized in the United States; Kentucky is known as the Bluegrass State because this species is so prevalent there. Others are rough bluegrass (P. trivialis), used for shady lawns; Sandberg bluegrass (P. secunda), the most common native species; and big bluegrass (P. ampla), an important range grass. Bluegrass 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).
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, class Liliopsida, order Cyperales, family Poaceae.


The common name for several species of perennial pasture and lawn grasses in the genus Poa of the order Cyperales.
References in periodicals archive ?
Drought stress significantly decreased the net photosynthesis (A) and transpiration rate (Tr) of Kentucky bluegrass as compared to well watered treatment (Figures 1(a) and 1(b)).
Canada bluegrass (Poa compressa) is also found in many Kentucky bluegrass fields in Missouri.
Kura clover proportions in mixture with Kentucky bluegrass did not change over the 3 years and were 54% in year 1, 61% in year 2 and 62% in year 3.
Whilst the Camp Nou stadium in Barcelona did contain ryegrass as part of the profile, it is likely that there was a significant presence of rhizomes (due to the Kentucky bluegrass) as lateral growth is required to hold the grass cover together in portable systems.
Kentucky bluegrass is adaptable to a wide range of environmental conditions and maintenance programs because of the wide selection of cultivars.
(2004) applied ammonium sulfate at 293 kg N [ha.sup.-1] divided into six applications of 49 kg N [ha.sup.-1] to Kentucky bluegrass and perennial ryegrass (Lolium perenne L.).
(2009), including those on Kentucky bluegrass, exceeded this proposed safety limit.
Developing Kentucky bluegrass cultivars with improved resistance to billbugs, pp.
Yes, Kentucky bluegrass, the main grass species normally used in New England lawns, is not from Kentucky; it is native to Europe.
A typical cool season seed mixture for lawns consists of Kentucky bluegrass, fine fescue, and perennial ryegrass.
Volunteers were also tested to determine whether they were allergic to common triggers such as dust mites, cats, Cladosporium mold, and timber grass, a relative of Kentucky bluegrass.
"DDG mulch applied in this manner promoted Kentucky bluegrass growth while inhibiting seed germination of annual bluegrass--which is considered a weed," he says.

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