Andropogon


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Andropogon

 

(beard grass), a genus of perennial rhizomatous grasses. The spikelets occur in bunches, either fanning out or clustered at the stem ends. There are about 150 species, distributed primarily in tropical and subtropical countries. They are typical of the African savannas. Several species are found in the temperate zone of both hemispheres. Two wild species grow in the USSR: Caucasian beard grass (A. caucasicus), which grows in the Caucasus and Middle Asia, and hemostatic beard grass (A. ischaemum), which is distributed in the southern regions of the European USSR, the Caucasus, Middle Asia, and Western Siberia. Andropogon is found in steppes and low-mountain regions as far as the mid-mountain region, often in rocky ground. Often it is one of the predominant grasses in an area (an edificator). Andropogon is eaten by cattle and survives well in grazed-over areas. The two USSR species are often attributed to the genus Bothriochloa. One representative of true Andropogon, Virginia beard grass (A. virginicus), originated in America and has spread as a weed in Western Transcaucasia.

REFERENCES

Rozhevits, R. Iu. Zlaki. Moscow-Leningrad, 1937.
Kormovye rasteniia senokosov ipastbishch SSR, vol. 1. Edited by I. V. Larin. Moscow-Leningrad, 1950.

T. B. VERNANDER

References in periodicals archive ?
Ischaemum minus Presl.; d, Trachypogon montufari (Kunth) Nees; e, Andropogon selloanus (Hack.) Hack.; f, Andropogon bicomis L.; g.
Se observo un proceso de regeneracion de las coberturas vegetales sobre afloramiento rocoso a partir de rebrotes vegetativos de las especies Calea peruviana, Ilex kunthiana, Puya bicolor, Clethra fimbriata, Morella parvifolia, Befaria resinosa y Dodonaea viscosa, presencia de Pteridium aquilinum, Paramiflus glandulosus y gramineas como Andropogon bicornis, Andropogon leucostachyus, Melinus minutiflora, Calamagrostis effusa y Calamagrostis intermedia.
0.5 1 2 3 4 5 anos ano anos anos anos anos Imperata brasiliensis 160 809 1128 448 220 80 Pteridium aquiiinum 30 51 900 1157 1748 1900 Fabaceae 10 35 140 450 400 500 Andropogon bicomis 20 40 90 600 800 980 Biomasa seca total 220 935 2258 2655 3168 3460 Fig.
Regarding Andropogon spp., Cynodon and Hyparrhenia few studies were found; in our trial they showed similar chemical characteristics (except for the high lignin content of Cynodon and Hyparrhenia) and the in vitro data indicates a low nutritive value.
Regrettably, Andropogon x velutinus Norrmann & Nagahama in Nagahama et al.
La fraccion de proteina de 56 kDa que al parecer es la subunidad grande de la enzima RuBisCO, estuvo presente en la especie aqui estudiada hasta las 120 h de incubacion ruminal; en cambio, la literatura menciona distintos comportamientos para otras pasturas como ser Panicum, donde estuvo presente hasta las 24 h, en Andropogon se la observo hasta las 16 h y en Bromus solo hasta las 8 h.
Este tratamento foi aplicado com o proposito de verificar a influencia do raleamento da Caatinga sobre escoamento superficial, erosao hidrica e producao de sedimentos em pequenas bacias rurais; na terceira microbacia B3 foi aplicado, em 2010, o manejo de desmatamento total da vegetacao seguido de queima e cultivo de capim (Andropogon gayanus Kunt) para pastagem.
This early settlement community, as described by White and Madany (1978), was dominated mostly by tall grasses, particularly Andropogon gerardii, Sorghastrum nutans, along with the shorter Sporobolus heterolepis.
Our empirical focus is the eradication of three species in northwestern Australia: Mimosa (Mimosa pigra), Gamba Grass (Andropogon gayanus), and Neem (Azadirachta indica).
Three of the five field sites included research farms of ~2.5 ha each under three different species of perennial pasture grasses (PPG) established in 1955: (i) Digitaria smutsii (DS); (ii) Brachiaria decumbens (BD); and (iii) Andropogon gayanus (AG).