Knowledge (XXG)

Cenchrus purpureus

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placement over maize. Of these two, only bana significantly decreased survival rates. In a farmer's field, it is recommended that three rows of bana Napier grass be planted as a border crop around the entire field. Potential exists to improve the push-pull strategy through further trials with different intercrops, by manipulating allelochemicals in each intercrop, as well as by investigating insect sensitivity to natural chemicals. Once prominent in a field, it is difficult to rid the area of the stemborer pests as larvae can remain dormant, and therefore push-pull management will not have the intended effect. It is recommended that if an infestation is particularly severe, neither corn, nor sorghum should be planted in the same field the following year but instead rotated with other crops. It is also important to burn infested stalks or, if they have an intended use, to leave them out in the sun for three days. The use of push-pull pest management must be used in combination with good ecological practices to yield the desired results.
267:. It is tall and forms in robust bamboo-like clumps. It is a heterozygous plant, but seeds rarely fully form; more often it reproduces vegetatively through stolons which are horizontal shoots above the soil that extend from the parent plant to offspring. It requires low water and nutrient inputs. The Elephant grass was crossed with Pearl millet species to form Bajra Nappier. Subsequent work was done to decrease the internode length of Elephant grass. Napier grass plantations produce about 40 tonnes of dry biomass per hectare per year with an average energy content 18 GJ (5 MWh) per tonne, and the grass can be harvested many times per year. 287:, rain, sunshine and temperature. Recognizing its potential as a bioenergy crop, some yield trials have been carried out around the world. In Malaysia, Halim et al. tested 9 different napier variants and found that regular napier grass yielded the most (65 dry tonnes per hectare per year), with the King Grass variant second (62 tonnes). In Colombia, Cardona et al. estimates a yield range of 40–60 dry tonnes for the napier variant King Grass, under optimal conditions. In drier areas however, yields decline; Gwayumba et al. estimate 15–40 dry tonnes as the general yield range for Kenya. 291:
month). These yields are high compared to other types of energy crops. For large-scale plantations with pines, acacias, poplars and willows in temperate regions, Smil estimates yields of 5–15 dry tonnes per hectare per year, and for similarly large plantations, with eucalyptus, acacia, leucaena, pinus and dalbergia in tropical and subtropical regions, his estimate is 20–25 dry tonnes. In Brazil, the average yield for eucalyptus is 21 t/ha, but in Africa, India and Southeast Asia, typical eucalyptus yields are below 10 t/ha.
33: 376:. Its high productivity makes it particularly suited to feed cattle and buffaloes. Hairless varieties, such as Ugandan hairless, have much higher value as fodder. As it is able to grow with little water and nutrients, grazing has made productive use of arid lands for food production. Furthermore, livestock can be incorporated into the pull-push management system providing another economically viable purpose for the ‘trap’ plant. Napier grass is valuable to African landscapes as it prevents 349: 249: 46: 916:"The total water requirements are approximately 100 mm (4 inches) per month rainfall equivalent. The yield of Giant King Grass depends on the time between harvests. For example, a six-month harvest of tall Giant King Grass, one can expect to obtain 80 or more US tons per acre (180 metric tons per hectare) of fresh grass at approximately 70-75% moisture. For two harvests per year, double these figures." 1091: 324:(the "push" plant), which repels the moths as they look to lay their eggs. Desmodium also provides a ground cover and is nitrogen fixing, which improves soil fertility while decreasing labour involved with weeding. This deterrent is used in combination with Napier grass planted around the perimeter of the plot. A study of Kenyan farmers using the push-pull strategy reported an 89% reduction in 357: 271:
digest, but in many cases the annual dry yield increases. The grass can reach a height of 7-8 meters after 4 months of growth. It produces best growth between 25 and 40 °C, and little growth below about 15 °C, with growth ceasing at 10 °C. Tops are killed by frost, but plants re-grow with the onset of warm, moist conditions. Napier grass grows from sea level to over 2,000 m elevation.
316:) are the cause of 10% of total yield loss in Southern and Eastern Africa and on average 14-15% in sub-Saharan Africa. The larvae cause immense damage to maize and sorghum by burrowing into their stems and eating from within. This not only makes them difficult to detect and remove but also damages the vascular tissue necessary for plant growth. 328:(a parasitic weed), an 83% increase in soil fertility, and 52% effectiveness in stemborer control. Considering that striga, stemborers, and low soil fertility together cause yield losses of an estimated 7 billion US dollars or enough to feed 27 million people, the implementation of this technique could significantly reduce food insecurity. 339:
Finally, the establishment of a push-pull system requires increased labour in the primary stages and a large enough land plot to allow space for a non-food crop to be planted; these factors often deter its adoption. A program could increase adoption rates through promoting its use in combination with
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production. Thermal pyrolytic conversion could be used to produce charcoal, biogas and bio-oil. Although this technology is not currently in use, it could be implemented as a means of providing energy to African communities, while enriching the soils of the local landscape. It is also used as source
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Insecticide effectiveness is low against stemborers, as larvae are protected by protective cell wall layers around the stem. Insecticides are also expensive for poor farmers and can build chemical resistance by the pests. In addition, chemicals are carried into final food products. Instead of trying
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The push-pull pest management technique involves the desired crop being planted alongside a 'push' plant, which repels pests, in combination with a 'pull' crop around the perimeter of the plot, which draw insects out of the plot. Napier grass has shown potential at attracting stemborer moths (a main
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At the top end of the range, napier grasses have been shown to yield up to 80 dry tonnes per hectare per year, and commercial napier grass developers advertise yields of roughly 100 dry tonnes per hectare per year, provided there is an adequate amount of rain or irrigation available (100 mm per
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pest management highly depends on proper implementation in combination with other good ecological practices. Firstly, not all varieties of Napier grass function as a trap. In a study of eight varieties, only two bana and Ugandan hairless Napier varieties significantly attracted female moths for egg
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Generally, the grass is harvested in relatively short intervals (every 1 to 3 months) when it is to be used as fodder for animals (its main use), and relatively long intervals (4–12 months) when used for bioenergy. Longer intervals increases the stem/leaf ratio, making the forage harder to chew and
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It can be propagated through seeds, however as seed production is inconsistent, collection is difficult. Alternatively, it can be planted through stem cuttings of the stolons. The cuttings can be planted by inserting them along furrows 75 cm apart, both along and between rows.
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to prevent the occurrence of pests, the push-pull strategy (also known as stimuli-deterrent) aims to guide their inevitable biological evolution to prevent damage to valued crops. The method proposes that sorghum or corn be intercropped with
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Vicente-Chandler et al. found that heavily fertilized napiergrass produced 75,661 pounds of dry matter per acre per year when cut at 90-day intervals, equivalent to 84.8 tonnes per hectare per year. See page 202:
800: 240:. It is also utilized for firebreaks, windbreaks, in paper pulp production and most recently to produce bio-oil, biogas and charcoal. It also helps feed animals such as goat, rabbit, even pig, and cow . 1980: 836:
Hoshino et al. measured a yield of 75.6 dry tonnes per hectare per year the second year of growth under heavy fertilisation and with rainfall level 1000 mm annually. See pages 310, 311, 315:
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Cardona, Eliana; Rios, Jorge; Peña, Juan; Peñuela, Mariana; Rios, Luis (2016). "King Grass: A very promising material for the production of second generation ethanol in tropical countries".
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Vicente-Chandler, Jose; Silva, Servando; Figarella, Jacinto (1959). "The Effect of Nitrogen Fertilization and Frequency of Cutting on the Yield and Composition of Three Tropical Grasses".
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cause of yield loss in Africa) away from maize and hence is the "pull" crop. This strategy is much more sustainable, serves more purposes and is more affordable for farmers than
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Paudel, Dev; Kannan, Baskaran; Yang, Xiping; Harris-Shultz, Karen; Thudi, Mahendar; Varshney, Rajeev K.; Altpeter, Fredy; Wang, Jianping (2018-09-26).
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Zhang et al. measured a bana grass yield of 74 dry tonnes per hectare per year with light fertilisation and 1000 mm rainfall. See pages 96, 98:
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Historically, this wild species has been used primarily for grazing, recently, however, it has been used as part of a
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Flores, Rilner A.; Urquiaga, Segundo; Alves, Bruno J. R.; Collier, Leonardo S.; Boddey, Robert M. (1990-01-06).
414:"Surveying the genome and constructing a high-density genetic map of napiergrass ( Cenchrus purpureus Schumach)" 1940: 1386: 1848: 1605: 32: 1610: 1597: 1532: 1160: 225:. It has low water and nutrient requirements, and therefore can make use of otherwise uncultivated lands. 1945: 1592: 1122: 1272: 684: 172: 1659: 1770: 1566: 1373: 1215: 939:
Mackay quotes yields of 360 wet tonnes per hectare per year, but does not quantify moisture content.
883: 721: 425: 1246: 1804: 1809: 1760: 1902: 1835: 1558: 1456: 1241: 819: 818:. Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing, China: 95–102. 758:"Dry Matter Intake, Digestibility and Milk Yield by Friesian Cows Fed Two Napier Grass Varieties" 672: 260: 201: 40: 384: 248: 1708: 1960: 1930: 1540: 1394: 1324: 1202: 983: 973: 899: 780: 737: 617: 572: 459: 441: 895: 1965: 1884: 1399: 966: 965: 891: 854: 772: 729: 607: 562: 449: 433: 1682: 840:"Dry Matter Production of Tropical Grasses and Legumes and its Seasonal Change in Thailand" 551:"Yield and quality of elephant grass biomass produced in the cerrados region for bioenergy" 348: 1894: 1778: 697: 312: 83: 1233: 1171: 887: 725: 669:
The soil was fertilised, rainfall was 2700 mm. For yield results, see table 2, page 40:
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of fuel. The young leaves and shoots are edible and are cooked to make soups and stews.
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A Dutch company has turned the grass into a plastic that can be used for packaging.
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More recently, Napier has been used to alleviate pressure on food production by
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Zhang, Xia; Gu, Hongru; Ding, Chenglong; Zhong, Jianli; Xu, Nengxiang (2010).
1488: 1363: 987: 903: 784: 771:(4). Asian Australasian Association of Animal Production Societies: 516–521. 757: 741: 621: 576: 445: 1641: 1579: 1448: 1228: 801:"Path coefficient and cluster analyses of yield and morphological traits in 321: 222: 1874: 1721: 463: 1783: 858: 776: 671:"Yield and nutritive quality of nine Napier grass varieties in Malaysia". 331:
Although promising as a sustainable and affordable option, the success of
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Gwayumba, W.; Christensen, D. A.; McKinnon, J. J.; Yu, P. (2002-04-01).
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Heuzé V., Tran G., Giger-Reverdin S., Lebas F., 2016. Elephant grass (
1026:"Scientists back use of Napier grass as sustainable way to feed herds" 1672: 592:"Herbage yield and chemical composition of four varieties of Napier ( 325: 119: 1298: 1116: 352:
Napier grass (Cenchrus purpureus) as fodder crop, West Bengal, India
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livestock, giving economic value to the planting of Napier grass.
247: 57: 1796: 1220: 221:, is a species of perennial tropical grass native to the African 1571: 838:
Hoshino, Masao; Ono, Shigeru; Sirikiratayanond, Nittaya (1979).
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Power density: a key to understanding energy sources and uses
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as there are 2 billion ha of non-arable land suitable for
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Yield depends on management techniques (e.g. fertilizer),
596:) grass harvested at three different days after planting" 1053:). Feedipedia, a programme by INRA, CIRAD, AFZ and FAO. 1981:
Taxa named by Heinrich Christian Friedrich Schumacher
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Missouri Botanical Garden horticultural treatment —
1472: 1129: 600:Agriculture and Biology Journal of North America 765:Asian-Australasian Journal of Animal Sciences 8: 590:Ansah, T.; Osafo, E.; Hansen, Hanne (2010). 972:. Cambridge, Massachusetts: The MIT Press. 1117: 31: 20: 1014: 1012: 1010: 1003: 1001: 999: 997: 611: 566: 508: 506: 504: 502: 500: 498: 496: 489: 487: 485: 483: 481: 479: 477: 475: 473: 453: 896:10.2134/agronj1959.00021962005100040006x 659: 657: 655: 537: 535: 404: 693: 682: 533: 531: 529: 527: 525: 523: 521: 519: 517: 515: 230:push–pull agricultural pest management 920:"Giant King® Grass: Grow and Harvest" 847:Japanese Journal of Grassland Science 7: 1771:53723fc2-6e4e-49ce-a413-4e15678cd86c 1374:68046c7c-7d29-4a1f-ac3d-8a0eef6b480e 1057:Last updated on June 23, 2016, 17:09 1055:https://www.feedipedia.org/node/395 364:Napier grass is the most important 1436:urn:lsid:ipni.org:names:77106033-1 636:"Cenchrus purpureus & hybrids" 14: 1110:More information can be found at 232:strategy. Napier grasses improve 1849:urn:lsid:ipni.org:names:415202-1 1089: 606:(5). Science Hub: 928, table 4. 44: 568:10.1590/S0100-69162012000500003 259:(or napier grass) is a monocot 734:10.1016/j.biombioe.2016.10.008 613:10.5251/abjna.2010.1.5.923.929 263:perennial grass in the family 1: 236:, and protect arid land from 360:Use as fodder crop in Kenya 1997: 438:10.1038/s41598-018-32674-x 252:Common Napier (Non-hybrid) 1112:http://www.push-pull.net/ 295:Push-pull pest management 178: 171: 41:Scientific classification 39: 30: 23: 1976:Plants described in 1827 720:. Elsevier BV: 206–213. 1956:Phytoremediation plants 1951:Biological pest control 1936:Bunchgrasses of Africa 692:Cite journal requires 361: 353: 253: 1068:"Bioplastic – Vibers" 964:Smil, Vaclav (2015). 882:(4). Wiley: 202–206. 859:10.14941/grass.24.310 777:10.5713/ajas.2002.516 714:Biomass and Bioenergy 359: 351: 251: 1810:Pennisetum purpureum 1474:Pennisetum purpureum 1105:Pennisetum purpureum 1051:Pennisetum purpureum 803:Pennisetum purpureum 594:Pennisetum purpureum 206:Pennisetum purpureum 943:"Mackay Bana Grass" 888:1959AgrJ...51..202V 812:Tropical Grasslands 726:2016BmBe...95..206C 555:Engenharia Agrícola 430:2018NatSR...814419P 188:(Schumach.) Morrone 1351:Cenchrus~purpureus 1247:Cenchrus purpureus 1161:Cenchrus purpureus 1131:Cenchrus purpureus 1096:Cenchrus purpureus 418:Scientific Reports 362: 354: 257:Cenchrus purpureus 254: 197:Cenchrus purpureus 182:Cenchrus purpureus 25:Cenchrus purpureus 1971:Afromontane flora 1918: 1917: 1395:Open Tree of Life 1123:Taxon identifiers 979:978-0-262-02914-8 962:See pages 85-86: 918:Viaspace (2020). 304:use. Stemborers ( 193: 192: 164:C. purpureus 1988: 1911: 1910: 1898: 1897: 1888: 1887: 1878: 1877: 1865: 1864: 1852: 1851: 1839: 1838: 1826: 1825: 1813: 1812: 1800: 1799: 1787: 1786: 1774: 1773: 1764: 1763: 1751: 1750: 1738: 1737: 1725: 1724: 1712: 1711: 1699: 1698: 1686: 1685: 1676: 1675: 1663: 1662: 1650: 1649: 1637: 1636: 1624: 1623: 1614: 1613: 1601: 1600: 1588: 1587: 1575: 1574: 1562: 1561: 1549: 1548: 1536: 1535: 1526: 1525: 1513: 1512: 1503: 1502: 1493: 1492: 1491: 1465: 1464: 1452: 1451: 1439: 1438: 1426: 1425: 1413: 1412: 1403: 1402: 1390: 1389: 1377: 1376: 1367: 1366: 1354: 1353: 1341: 1340: 1328: 1327: 1315: 1314: 1302: 1301: 1289: 1288: 1276: 1275: 1263: 1262: 1250: 1249: 1237: 1236: 1224: 1223: 1211: 1210: 1198: 1197: 1185: 1184: 1175: 1174: 1165: 1164: 1163: 1150: 1149: 1148: 1118: 1094:Data related to 1093: 1078: 1077: 1075: 1074: 1064: 1058: 1047: 1041: 1040: 1038: 1037: 1022: 1016: 1005: 992: 991: 971: 960: 954: 953: 951: 949: 937: 931: 930: 928: 926: 914: 908: 907: 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Index


Scientific classification
Edit this classification
Plantae
Tracheophytes
Angiosperms
Monocots
Commelinids
Poales
Poaceae
Panicoideae
Cenchrus
Binomial name
synonym
grasslands
push–pull agricultural pest management
soil fertility
soil erosion

C4
Poaceae
soil quality
insecticide
Busseola fusca
Chilo partellus
Desmodium
Striga
push-pull

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