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      • Paspalum vaginatum is a species of grass known by many names, including seashore paspalum, biscuit grass, saltwater couch, silt grass, and swamp couch. It is native to the Americas, where it grows in tropical and subtropical regions. It is found throughout the other tropical areas of the world, where it is an introduced species and sometimes an invasive weed. It is also cultivated as a turfgrass in many places.


      Description


      It is a perennial grass with rhizomes or stolons. The stems grow 10 to 79 centimetres (3.9 to 31.1 in) tall. The leaf blades are 10 to 19 centimetres (3.9 to 7.5 in) long and may be hairless to slightly hairy. They are usually blue-green in color. The panicle is usually a pair of branches up to 7.9 centimetres (3.1 in) long; there is sometimes a third branch below the pair. The branches are lined with oval to lance-shaped spikelets which grow pressed against the branches, making the panicle narrow. This species is similar to bermudagrass. It spreads by its rhizomes and stolons, forming a thick turf. In the wild this species grows in salt marshes and brackish marshes. The genome of Paspalum vaginatum was sequenced in 2022 and the species' haploid genome was determined to be approximately 590 megabases in size.


      Uses


      This grass has been bred into cultivars which are used for golf course turf and other landscaping projects. It forms a higher quality turf than bermudagrass in poor conditions, such as wet soils and low light levels, and with fewer nitrogen soil amendments. It can grow in lawns that receive rain on 250 days per year, and it can survive being waterlogged or submerged for several days at a time. It tolerates foot traffic. The main advantage of this grass is that it is very salt-tolerant. It can be irrigated with non-potable water, such as greywater, an important advantage in a time when there are increasing restrictions on water use. The grass can even be irrigated with saltwater. The grass will be lower in quality than that irrigated with potable water, but it survives. This species has "filled a niche in America", being a better grass to use on turf next to the ocean in places that receive sea spray. "It has the highest salt tolerance of all turfgrasses." It is also more competitive against weeds than similar grasses. Weeds can be controlled by the application of saltwater, in which weeds will die and the grass will survive.
      There are many cultivars bred for various uses. These cultivars are highly variable. For example, fine-textured types are used for golf courses, while coarser grass is selected for roadside revegetation. The best-known and oldest cultivar may be 'Adalayd' a grass with a similar texture and blue-green color to Kentucky bluegrass. The cultivar 'Aloha' is a dark green grass used for golf courses and athletic fields. 'Salam', the most common cultivar in Hawaii, is another dark green type suitable for golf courses. The leaves of 'Salam' are glossy on the undersides, giving the field a striped look when it is mowed. 'Seadwarf' is a bright green type that is more resistant to a grass disease called dollar spot than other cultivars.
      There are other uses for the grass, including erosion control in sandy coastal areas, its native habitat. It can be used in phytoremediation when the soils are high in heavy metals. It has been shown to survive pollution with crude oil. It can be used to feed livestock and some wild herbivores will graze it.
      Truist Park, the home ballpark of the Atlanta Braves, has Seashore Paspalum Platinum TE as its field surface.


      References




      External links



      USDA Plants Profile
      "Paspalum vaginatum". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture.
      NatureServe
      Paspalum vaginatum in West African plants – A Photo Guide.

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    Paspalum - Lawn Care Forum

    08 Okt 2008 · Seashore paspalum (Paspalum vaginatum Swartz) is very salt tolerant and in fact does better when Watered with a 3 parts fresh water to one part salt water. It is also fairly …

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    Recommendations for Seashore Paspalum - Lawn Care Forum

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    Feedback on Paspalum Required - Lawn Care Forum

    13 Mei 2004 · I should have been a little more specific originally. My main interest is the species of Seashore Paspalum (paspalum vaginatum) and cultivars of this species. There are hundreds …

    Monsanto Manage - Lawn Care Forum

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    Seashore Paspalum questions - Lawn Care Forum

    30 Agu 2015 · Not from Florida, but the majority of fine turf in Hawaii is either zoysia or seashore paspalum. Lowering the height of cut gradually prolongs the time to achieving proper height of …

    paspalum - Lawn Care Forum

    19 Jul 2005 · anyone in the northeast seeing more paspalum in lawns in the last few seasons? I cover the central CT area and have been getting more properties with paspalum. Pre …

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    08 Jun 2015 · Ok. I maintain a lot of paspalum in Hawaii. Of course, in areas it has no business being. For broadleaf weeds in a bermuda/paspalum mixed lawn, 1/2 oz per acre of metsulfuron …

    Controlling Bull Paspalum in Common Bermuda - Lawn Care Forum

    07 Mei 2017 · Dallisgrass is a paspalum. Anything that works on one should work on the other. Problem is, nothing available in our arsenal truly "works" on it. We carry an 18" garden tool …

    Specticle on St. Aug/centipede - Lawn Care Forum

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