Agrostis stolonifera
White bentgrass ( Agrostis stolonifera )
The White bentgrass ( Agrostis stolonifera ), also known under the names of straw bent grass and giant bent grass, a perennial, evergreen Hemikryptophyt from the Gramineae family is ( Poaceae ). It is used as grazing -resistant forage grass, especially in the wet grassland. The grass is very rich in form. There are currently two varieties are distinguished: Agrostis stolonifera Agrostis stolonifera var var palustris and stolonifera.
Description
The White bentgrass is 8 to 40 inches tall. It spreads through leafy above-ground runners ( stolons ) and forms dense turf. The way branching ascending stems are smooth and hairless and wear two to five nodes. Sprossbürtige roots and new shoots are formed at the lower nodes. The hairless, finely pointed, gray - or blue-green leaves are 0.5 to 5 mm wide and up to 10 cm long. They are rolled in a young state, later expanded flat. The leaf blades are densely crisscrossed with nervous and very finely rough. The ligule ( ligule ) is designed as a 2-6 mm long, membranous hem.
The flower spike is 1-13 cm long and 0.4 to 2.5 cm wide. It is spread in the heyday, otherwise often pulled together tightly and elongated. Your side branches go from three or seven of the main axis. The spikelets are in dense clusters. You are flowered and about 2 to 3 mm long, lanceolate - shaped pointed, smooth and hairless. The bare glumes are einnervig and as long as the spikelet. The smooth, bare, usually unbegrannten lemmas are five annoying to 2 mm long and appear at the upper end rounded. The palea reaches about three-quarters the length of the lemma. The dust bag can be 1 to 1.5 mm long. The caryopses enclosed by the cover and palea. The White bent grass blooms from July to August.
Distribution and location
The White bentgrass has a circumpolar distribution in the northern hemisphere from Europe to West Asia and in North America as well as in the Southern Hemisphere and Antarctica. To Australia, New Zealand and South Africa, the grass has been introduced.
There humid colonized, nutrient-rich, often calcareous, sandy- gravelly loam or clay soils, but can also occur on silt soils in the flood area of the waters. The plant is the Ordnungskennart the flood grass ( Agrostietalia stoloniferae ). They can also be found as Begleitart in dock - couch grass companies ( Agropyro - Rumicion ) and smartweed Kick lawn companies ( Polygonion avicularis ). On the coasts it forms together with the beach thrift the Association Armerion maritimae. The White bent grass grows in moist to moist lawns, meadows, pastures and fields. Not infrequently, it can also be found along river banks, ditches and along path countersinking. The salt- tolerant grass grows on the coast on the outside of the dunes.
Ligule
Creeping growth habit
Rooting
Use
The species forms dense and fine scars. It takes place primarily used there where higher loads predominate, such as in home lawns and sports turf. White bentgrass is used for its excellent low- cut compatibility ( <1.5 cm) especially in golf green mixes. Lately, it is also increasingly offered as an ornamental plant under the trade name " hanging bamboo ".
Diseases
The white bentgrass is affected by various types of fungi. So the rust fungi Puccinia agrostidis, Puccinia graminis and Uromyces may agrostidis with uredia and Telien occur. Sclerotinia homoeocarpa is the causative agent of dollar spot disease on bunch grasses. Fusarium and Fusarium roseum tricinctum solve a Fusarium wilt of. Microdochium nivale triggers the pink snow mold. Furthermore, Rhizoctonia solani, Pythium species and Typhula incarnata and Typhula ishikariensis occur.