Distribution in Egypt
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Nile region, oases and Mediterranean region.
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Global Distribution
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Native to tropical and southern Africa and tropical Arabia, widely cultivated as a fodder grass (Rhodes Grass).
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Habitat
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Garden escape, now naturalized as a field weed.
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Life Expectancy
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Comments
provided by eFloras
This is a forage grass, native to Africa, but now introduced and naturalized throughout the tropics and subtropics (Rhodes Grass). There are many different strains differing in habit, plant height, lemma pubescence, and awn length. It is usually a robust, strongly stoloniferous grass, but tufted forms also occur occasionally.
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Comments
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Rhodes’ Grass has been introduced into India and Pakistan where it is a valuable fodder grass. It is badly affected by frost.
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Comments
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This is an introduced species. It makes an excellent hay of high nutritive value and is eaten greedily by all stock. Yields are very high in irrigated fields.
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Description
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Perennial, stoloniferous. Culms erect or ascending, usually rooting at lower nodes, ± flattened, hard, 1–1.5(–2) m tall. Leaf sheaths glabrous except mouth; leaf blades flat, 15–35 cm, 2–10 mm wide, scabrous, apex acuminate; ligule ca. 0.5 mm, with long hairs behind. Racemes digitate, 5–20, ascending to spreading, 4–11 cm, greenish brown; rachis scabrous. Spikelets with 3 or 4 florets, 2-awned; lower glume 1.5–2.5 mm; upper glume 2.5–4 mm including awn-point; lemma of fertile floret elliptic to oblanceolate in side view, 2.5–3.5 mm, shortly appressed-sericeous on lower margins, usually a tuft of hairs 0.5–1.5 mm on upper margins, keel glabrous or sparsely to densely sericeous; awn 2–6 mm; second floret usually male, narrowly lanceolate or cuneate, lemma ciliate on margins, body and awn a little shorter than fertile floret; third (and fourth) florets reduced to oblong or clavate awnless scales, less than 1 mm. 2n = 20, 30, 40.
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Description
provided by eFloras
Culm erect, stoloniferous. Blade about 5 mm wide, basal part covered with long silky hairs; ligule subcoriaceous, about 6 mm long, ciliate on back. Inflorescence of several spikes about 10 cm long, digitately arranged. Spikelets several-flowered, 4-4.5 mm long, sessile; rachis pilose; glumes membranous, 1nerved, hispid along nerves, lanceolate, acute, awned; lower glume 2/3 as long as the upper; lower lemma elliptical, subcoriaceous, margins with short silky hairs, 3-nerved, 2-toothed, the awn slightly longer than the lemma; callus hairy; palea chartaceous, linear-elliptical, 2-keeled, with a shallow sinus at the apex.
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Description
provided by eFloras
Perennial; culms 05 to over 2 m high, stoloniferous, erect or ascending, occasionally rooting at the lower nodes, glabrous below the inflorescence. Leaf-blades flat, rarely involute, (15-)25-50 cm long, (1.5)3-9 mm wide, tapering towards the apex. Inflorescence of (5-)7-20 digitate, ascending to spreading spikes 4-15 cm long. Spikelets 34-flowered, 2-awned; lower glume 1.2-2.5 mm long; upper glume 2-4 mm long including the awn-point, lowest lemma lanceolate in side-view, 2.5-3.5 mm long, pallid, sparsely to densely ciliate on the margins and keel, the awn 2-10 mm long; callus rounded, ciliate; 2nd lemma projecting from the side of the lowest lemma, lanceolate, 1.5-3 mm long, ciliate on the margins (but often obscurely so), the awn 1.5-5.5 mm long; 3rd lemma reduced to a scabrid, oblong or clavate awnless scale 0.75-2.5 mm long; 4th lemma, if present, reduced to a clavate awnless scale less than 1 mm long.
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Distribution
provided by eFloras
Distributed from Senegal eastwards to the Sudan and south to South Africa, in open grasslands and savannahs.
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Distribution
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Distribution: Pakistan (Sind & Punjab, introduced); from Senegal eastwards to the Sudan and south to South Africa, in open grassland and Savannah.
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Habitat & Distribution
provided by eFloras
Open grassland and savanna; widely cultivated in warmer parts of China [native to Africa].
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Comprehensive Description
provided by North American Flora
Chloris gayana Kunth, R^v. Gram. 1: 89, name oniy 1829; 293. 1830.
Perennial; culms densely tufted, commonly 1-1.5 meters tall, compressed, frequently with strong arching stolons; sheaths glabrous or scaberulous, the lower ones compressedkeeled, the upper rounded on the back, sometimes with a tuft of long hairs at the mouth; ligule membranaceous, very short, ciliate with long hairs; blades flat, usually elongate, tapering to a fine point, 3-7 mm. wide, scabrous, especially on the margins; spikes 6-20, 5-12 cm. long, narrowly ascending in a rather dense head; spikelets 4.5 mm. long; glumes acute, 1-nerved, or the second sometimes 3-nerved, scabrous on the keel, the first 1.5 mm. long, the second 2.5 mm. long, mucronate; fertile floret 3.5 mm. long, the callus bearded, the lemma acute, shortciliate on the margins, the hairs longer on the upper third, the awn 4-6 mm. long, scabrous; rudiment composed of two reduced florets, the first similar to the fertile floret, 2.5 mm. long, glabrous, the awn 2-4 mm. long, the second small, club-shaped, awnless.
Type locality: Senegal, Africa.
Distribution: Tropical America, escaped from cultivation; introduced from Africa.
- bibliographic citation
- Albert Spear Hitchcock, Jason Richard Swallen, Agnes Chase. 1939. (POALES); POACEAE (pars). North American flora. vol 17(8). New York Botanical Garden, New York, NY
Physical Description
provided by USDA PLANTS text
Perennials, Terrestrial, not aquatic, Stolons or runners present, Stems nodes swollen or brittle, Stems erect or ascending, Stems geniculate, decumbent, or lax, sometimes rooting at nodes, Stems caespitose, tufted, or clustered, Stems terete, round in cross section, or polygonal, Stem internodes solid or spongy, Stems with inflorescence less than 1 m tall, Stems with inflorescence 1-2 m tall, Stems with inflorescence 2-6 m tall, Stems, culms, or scapes exceeding basal leaves, Leaves mostly cauline, Leaves conspicuously 2-ranked, distichous, Leaves sheathing at base, Leaf sheath mostly open, or loose, Leaf sheath smooth, glabrous, Leaf sheath or blade keeled, Leaf sheath and blade differentiated, Leaf blades linear, Leaf blades 2-10 mm wide, Leaf blades 1-2 cm wide, Leaf blade s mostly flat, Leaf blades more or less hairy, Ligule present, Ligule a fringed, ciliate, or lobed membrane, Inflorescence terminal, Inflorescence solitary, with 1 spike, fascicle, glomerule, head, or cluster per stem or culm, Inflorescence a panicle with narrowly racemose or spicate branches, Inflorescence a panicle with digitately arranged spicate branches, Inflorescence with 2-10 branches, Inflorescence branches more than 10 to numerous, Inflorescence branches 1-sided, Lower panicle branches whorled, Inflorescence branches paired or digitate at a single node, Flowers bisexual, Spikelets sessile or subsessile, Spikelets laterally compressed, Spikelet less than 3 mm wide, Spikelets with 1 fertile floret, Spikelets with 3-7 florets, Spikelet with 1 fertile floret and 1-2 sterile florets, Spikelets solitary at rachis nodes, Spikelets all alike and fertille, Spikelets bisexual, Spikelets disarticulating above the glumes, glumes persistent, Spikelets disarticulating beneath or between the florets, Rachilla or pedicel glabrous, Glumes present, empty bracts, Glumes 2 clearly present, Glumes distinctly unequal, Glumes shorter than adjacent lemma, Glumes keeled or winged, Glumes 1 nerved, Lemma similar in texture to glumes, Lemma 3 nerved, Lemma apex truncate, rounded, or obtuse, Lemma apex dentate, 2-fid, Lemma distinctly awned, more than 2-3 mm, Lemma with 1 awn, Lemma awn less than 1 cm long, Lemma awn subapical or dorsal, Lemma awns straight or curved to base, Lemma margins thin, lying flat, Lemma straight, Palea present, well developed, Palea shorter than lemma, Palea 2 nerved or 2 keeled, Stamens 3, Styles 2-fid, deeply 2-branched, Stigmas 2, Fruit - caryopsis, Caryopsis ellipsoid, longitudinally grooved, hilum long-linear.
Chloris gayana
provided by wikipedia EN
Chloris gayana is a species of grass known by the common name Rhodes grass. It is native to Africa but it can be found throughout the tropical and subtropical world as a naturalized species.
It can grow in many types of habitat. It is also cultivated in some areas as a palatable graze for animals and a groundcover to reduce erosion and quickly revegetate denuded soil.[1] It is tolerant of moderately saline and alkaline soils and irrigation.[2]: 2
Description
This is a perennial grass which can reach one half to nearly three meters in height and spreads via stolons. It forms tufts and can spread into wide monotypic stands. The inflorescence is a single or double whorl of fingerlike racemes up to 15 centimeters long. Each spikelet in the raceme is a few millimeters long and contains one or two fertile florets and up to four sterile florets.
Growing conditions
Its seasonal growth is in the spring and summer and its rainfall requirement is 600–750 mm per year.[3] This low rainfall requirement means that this grass can survive in drier places. Rhodes grass can grow in a variety of soil conditions.[4] Its ideal soil would be anything greater than a 4.3 pH level in terms of acidity.[5]: 2 In addition to this, Chloris gayana has a moderate aluminum tolerance.[5]: 2 The fact that this type of grass survives on little rainfall, can grow in low pH soils, and has a moderate tolerance to aluminum means that it may be beneficial to poor farmers in the sub-tropics. Less work is required to maintain this grass which means that the farmers can focus on other priorities. It is also beneficial to farmers who own land with poor soil.
Benefits from Chloris gayana can also be found in the plant's growth. The seed germinates quickly (1–7 days) depending on temperature.[5]: 2 and it often achieves full ground cover within three months of sowing.[5]: 2 This too is good for farmers when it comes to covering bare soil. The fact that Chloris gayana can grow quickly means that farmers could use it to protect the soil from eroding.
Stress tolerance
An important feature of Chloris gayana is its drought tolerance.[6]: 70 The reason why it is drought tolerant can be found in its roots. Production may effect with mild drought period if it is cultivated for forage purpose. Chloris gayana roots are able to extract water at a depth of 4.25 meters.[3] Since this grass has good drought tolerance, it could also be beneficial to farmers for ensuring livestock are fed in times of drought.
Another important feature of Chloris gayana can be found in its salt tolerance. In terms of grass species, this type appears to be one of "the most salt-tolerant species"[7]: 1583 in terms of grasses. In "saline conditions, plant growth is restricted".[7]: 1574 Since Chloris gayana shows good salt tolerance, this type of grass can be beneficial to farmers who have salinity problems in their soil.
Genetic stocks
There are various genetic varieties of Chloris gayana that exist like Katambora, Pioneer and Callide. "Katambora" is an important genetic variety that originates from Zimbabwe.[3] It has been found to be more persistent on poorer soil than other genetic varieties.[5]: 1 [5]: 3 Katambora is meant for hay production because it is leafier, finer-stemmed, and produces better dry matter.[5]: 3 It is important to note that "Katambora" is diploid type.[5]: 3 Diploid types of Chloris gayana in general show good frost tolerance, salt tolerance, and drought tolerance.[5]: 3
A different type of Chloris gayana are tetraploid types. Tetraploid types of Chloris gayana have a major characteristic in which they flower late in the season which means the feed quality is maintained longer[5]: 3 It has also been determined that tetraploid varieties of Chloris gayana have "higher concentrations of nutrients".[8]: 1128 It is important to note however that both tetraploid and diploid varieties at the pre-flowering stage of growth have "adequate concentrations of nutrients".[8]: 1128 Understanding the different genetic varieties of Chloris gayana is beneficial to farmers. Knowing the different types will allow a farmer to choose what is best for their situation.
Practical information
Chloris gayana can be very helpful to farmers and NGOs in terms of sustainable agricultural development. Pasture establishment for farmers "demand high capital cost and labour."[9] A possible solution to this would be to intercrop Chloris gayana with food crops. This would be economically feasible for resource poor farmers.[9] Chloris gayana can be undersown to maize after final weeding of the crop without affecting maize grain yield.[9] In addition to this, "growing cultivated forages, in association with food crops, can contribute to the improvement of the qualitative and quantitative supply of livestock feed."[10]: 38 Intercropping Chloris gayana with a food crop is a practical method farmers can use when it comes to sustainable agricultural development.
There are some practical tips that farmers should be aware of when it comes to harvesting Chloris gayana. For example, "the crop is most productive in the first two or three cuts".[4] The nutritive value of this forage is high when the grass is young, but it decreases with maturity.[11] Farmers should be aware of this in order to make sure that they can take full advantage of this type of grass. In terms of grazing, Chloris gayana should be grazed when the weather is not appropriate for harvesting.[4] This too is important for being able to use this type of grass efficiently.
There are other practical uses that farmers can benefit from when growing Chloris gayana. It can help with weed control because it can outcompete and smother weeds.[12]: 2 In addition to this, Chloris gayana is also able to deal with soil erosion on sloped fields by holding topsoil.[12]: 2 Chloris gayana can also be mixed with legumes such as cowpea, stylo, and alfalfa which also improves soil nutrient levels.[12]: 3 Managing weeds, soil erosion, and improving the soil are all important issues a farmer must deal with. Chloris gayana can be a good option for a farmer when it comes to trying to solve these problems.
References
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^ "Tropical Forages". Archived from the original on 2017-10-17. Retrieved 2009-03-11.
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^ Purdue Horticulture
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^ a b c [1] Chloris gayana, Food and Agricultural Organization of the United Nations
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^ a b c Suttie, J. M.; Food and Agriculture Organization of the United Nations (2000). "Hay Crops – Cereals and Grasses". Hay and Straw Conservation: For Small-scale Farming and Pastoral Conditions. Food & Agriculture Org. pp. 63–86. ISBN 978-92-5-104458-2.
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^ a b c d e f g h i j Moore, Geoff; Sanford, Paul; Wiley, Tim (1 December 2006). "Perennial pastures for Western Australia". Bulletins. Department of Agriculture and Food, Western Australia.
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^ Ponsens, J.; Hanson, J.; Schellberg, J.; Moeseler, B.M. (July 2010). "Characterization of phenotypic diversity, yield and response to drought stress in a collection of Rhodes grass (Chloris gayana Kunth) accessions". Field Crops Research. 118 (1): 57–72. doi:10.1016/j.fcr.2010.04.008.
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^ a b Deifel, Kurt S.; Kopittke, Peter M.; Menzies, Neal W. (September 2006). "Growth Response of Various Perennial Grasses to Increasing Salinity". Journal of Plant Nutrition. 29 (9): 1573–1584. doi:10.1080/01904160600848870. S2CID 85308838.
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^ a b Jones, R. J.; Loch, D. S.; LeFeuvre, R. P. (1995). "Differences in mineral concentration among diploid and tetraploid cultivars of rhodesgrass (Chloris gayana)". Australian Journal of Experimental Agriculture. 35 (8): 1123–1129. doi:10.1071/ea9951123. ProQuest 48310796.
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^ a b c Tadesse, Alemu (1990), The Unexploited Potential of Improved Forages in the Mid-Altitude and Lowland Areas of Ethiopia, Institute of Agricultural Research Addis Ababa, Ethiopia, http://www.fao.org/wairdocs/ilri/x5536e/x5536e10.htm#establishment_of_improved_forages_in_natural_pastures
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^ Hassen, A.; Gizachew, L.; Rethman, N. F. G.; Niekerk, WA van (1 March 2007). "Influence of undersowing perennial forages in maize on grain, fodder yield and soil properties in the sub-humid region of western Ethiopia". African Journal of Range & Forage Science. 24 (1): 35–41. doi:10.2989/102201107780178168. hdl:2263/5772. S2CID 54080270.
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^ Heuzé V., Tran G., Boudon A., Lebas F., 2016. Rhodes grass (Chloris gayana). Feedipedia, a programme by INRA, CIRAD, AFZ and FAO. https://www.feedipedia.org/node/480 Last updated on April 15, 2016, 14:23
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^ a b c Valenzuela, Hector; Smith, Jody (August 2002). Rhodesgrass (Report). hdl:10125/12746.
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Chloris gayana: Brief Summary
provided by wikipedia EN
Chloris gayana is a species of grass known by the common name Rhodes grass. It is native to Africa but it can be found throughout the tropical and subtropical world as a naturalized species.
It can grow in many types of habitat. It is also cultivated in some areas as a palatable graze for animals and a groundcover to reduce erosion and quickly revegetate denuded soil. It is tolerant of moderately saline and alkaline soils and irrigation.: 2
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