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Native to Africa, elephant grass is a tufted perennial grass that was introduced to Australia as forage for livestock. .
Elephant grass is not a prohibited or restricted invasive plant under the Biosecurity Act 2014.
Garden plantings and dumping of garden waste in bushland are main sources of infestation.
Elephant grass, merker grass, Napier grass, napier, Uganda grass, bana grass, barner grass [English];
herbe à éléphant, fausse canne à sucre, canne fourragère [French];
capim-elefante, capim-napiê [Portuguese]; pasto elefante, yerba elefante, zacate elefante, hierba elefante, gigante, pasto de Uganda [Spanish];
mfufu [Afrikaans]; erepani [Cook Island];
Olifantsgras [Dutch]; rumput gajah [Indonesian, Malaysian];
erba elefante, erba Napier, erba ugandese [Italian]; urubingo [Kinyarwanda]; mabingobingo [Kiswahili]; acfucsracsracsr [Kosraean]; senjele [Nyanja]; bokso [Palauan];
puk soh [Pohnpeian]; vao povi [Samoan]; buntot-pusa [Tagalog]; cỏ voi [Vietnamese]; الثيوم الأرجواني [Arabic]; 象草 [Chinese]; Слоно́вая трава́ [Russian]
Pennisetum purpureum Schumach. [Poaceae]
Pennisetum benthamii Steud., Cenchrus purpureus (Schumach.) Morrone
The taxon Cenchrus purpureus (Schumach.) Morrone was proposed in 2010 as a replacement for Pennisetum purpureum Schumach. (Chemisquy et al., 2010).
Elephant grass (Pennisetum purpureum Schumach.) is a major tropical grass.
It is one of the highest yielding tropical grasses. It is a very versatile species that can be grown under a wide range of conditions and systems:
dry or wet conditions, smallholder or larger scale agriculture.
It is a valuable forage and very popular throughout the tropics, notably in cut-and-carry systems (Mannetje, 1992; FAO, 2015).
Elephant grass is a robust, rhizomatous, tufted perennial grass. It has a vigourous root system, developing from the nodes of its creeping stolons.
The culms are coarse, perennial, and may be up to 4-7 m in height, branched above.
Elephant grass forms dense thick clumps, up to 1 m across. The leaves are flat, linear, hairy at the base, up to 100-120 cm long and 1-5 cm wide, with a bluish-green colour.
The leaf margin is finely toothed and the leaf blade has a prominent midrib.
The inflorescence is a stiff terminal bristly spike, up to 15-20 cm in length, yellow-brown to purplish in colour.
Spikelets are arranged around a hairy axis, and fall at maturity.
Spikelets are 4-6 mm long and surrounded by 2 cm long plumose bristles. There is little or no seed formation.
Elephant grass originated from sub-Saharan tropical Africa (Clayton et al., 2013).
Elephant grass in mainly found from 10 °N to 20 °S. It is often regarded as a weed in crops.
along roadsides, waterways, wetlands, floodplain, swamps, forest edges, disturbed areas and wastelands .
(CABI, 2014; Francis, 2004). It can withstand drought conditions and is a pioneer species in arid lands such as the Galapagos Islands (CABI, 2014).
Row width ranges from 50 to 200 cm and distance within rows is between 50 and 100 cm (Mannetje, 1992).
After planting, elephant grass grows vigorously and can reach 4 m in 3 months (Skerman et al., 1990).
Artus-Poliakoff et al., 1991).
Elephant grass requires high levels of fertilizer and a regular water supply (Mannetje, 1992).
Yields range from 20 to 80 t DM/ha/year under high fertilizer inputs (Francis, 2004; Skerman et al., 1990). With no, or inadequate, fertilizer, yields are in the range of 2-10 t DM/ha/year.
(Bogdan, 1977). Cuttings can be made at 45-90 day intervals, depending on location (FAO, 2015).
centro (Centrosema pubescens), perennial soybean (Neonotonia wightii) and leucaena (Leucaena leucocephala) (Mannetje, 1992).
In central Kenya, a comparison of three legumes (Desmodium intortum, Macrotyloma axillare, Neonotonia wightii) associated with elephant grass concluded.
(Mwangi et al., 2004). Elephant grass is sometimes intercropped with banana and cassava in home gardens (Mannetje, 1992).
The ideal harvest regime depends on the cultivar, weather conditions, soil fertility, management practices.
and livestock needs.
usually 3-4 months after planting.
Well-managed elephant grass can be harvested every month in hot and wet environments, or every 2 months in drier areas.
digestibility and leaf-to-stem ratios decline.
Leaving 10-15 cm high stubble provides sufficient carbohydrate reserves for subsequent regrowth (Orodho, 2006).
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