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Description ( англиски )

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Shrub, 1-3 m tall. Stems and branches covered in brown spreading heairs. Leaves imparipinnate with 6-15 pairs of leaflets and a terminal leaflet; rhachis and petiole covered in dense spreading golden brown hairs; leaflets elliptic-oblong to oblanceolate, up to 6 cm long, thinly appressed hairy above, more densely so below; apex slightly mucronate. Flowers in dense terminal heads, large, white; calyx densely brown or greyish hairy. Pods up to 15 cm long, densely covered in pale brown hairs.
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Mark Hyde, Bart Wursten and Petra Ballings
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Hyde, M.A., Wursten, B.T. and Ballings, P. (2002-2014). Tephrosia vogelii Hook. f. Flora of Zimbabwe website. Accessed 28 August 2014 at http://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=130050
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Worldwide distribution ( англиски )

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Widespread in Tropical Africa but probably not native in the Flora Zambesiaca region. Also in Comoros, Assam-India and Indonesia.
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Hyde, M.A., Wursten, B.T. and Ballings, P. (2002-2014). Tephrosia vogelii Hook. f. Flora of Zimbabwe website. Accessed 28 August 2014 at http://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=130050
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Flora of Zimbabwe

Tephrosia vogelii ( астурски )

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Tephrosia vogelii, o barbasco guineanu, ye una especie de planta con flores del xéneru Tephrosia.[1]

 src=
Vista de la planta

Distribución y hábitat

Tephrosia vogelii ye una yerba o árbol pequeñu que ye nativa d'África tropical y tamién s'utilizó na América tropical, según el sur y sudeste d'Asia.[2]

Descripción

Ye un pequeñu árbol utilizáu polos llabradores en numberosos países d'África pa desfacer de les plagues nel ganáu, pa controlar les plagues nos campos de cultivu como un pesticida orgánicu, ameyora la fertilidá del suelu, y ye una melecina pa enfermedaes de la piel y los viermes internos, y pal so usu nel almacenamientu de los cultivos.[3] Ye una yerba nidio y amaderáu con xamasca trupa. Algama un tamañu 0,5-4 m d'altor, y contién los tarmos y cañes colos pelos marrones blanques o ferruñoses curties y llargues. Fueyes llargues y estreches ramificar a partir de los tarmos, lo mesmo que de saco formes que contienen les granes de la planta pa la reproducción. L'usu de "estractu de fueya de Tephrosia vogelii de baxu costo ta estendiéndose a los llabradores nel centru de Kenia", y foi bien esitosu en términos de les sos resultancies.[4]

Usos

Utilízase comúnmente pa esaniciar les [[plaga|plagues] y enfermedaes, pulgues y cachiparros n'animales específicamente. Nun ye afechu pal ganáu o consumu humanu, yá que nun ye bien nutritivu y puede ser tóxicu pa los pexes y otros animales.[2] La fame y la probeza en tol mundu ye un problema creciente y esta planta puede utilizase como solución p'ayudar a solliviar esti problema.

Principios activos

Deguelin y tephrosin pueden atopase en Tephrosia vogelii.[5]

Taxonomía

Tephrosia vogelii describióse por Joseph Dalton Hooker y espublizóse en Journal of the Proceedings of the Linnean Society 4(Suppl.): 111–112. 1860.[6]

Etimoloxía

Tephrosia: nome xenéricu que deriva de les pallabres griegues: τεφρος (tephros), que significa "cenicientu", en referencia a la coloración abuxada dáu a les fueyes polos sos mestos tricomes.[7]

vogelii: epítetu dau n'honor del botánicu Julius Rudolph Theodor Vogel.

Sinonimia
  • Cracca vogelii (Hook.f.) Kuntze[8]

Ver tamién

Referencies

  1. «GRIN Species Records of Tephrosia vogelii». Germplasm Resources Information Network. United States Department of Agriculture. Consultáu'l 29 de payares de 2010.
  2. 2,0 2,1 World Agroforestry Centre. A Tree Species Reference and Selection Guide: Tephrosia Vogelii. Agroforestry Tree Data Base. 2011.
  3. PACE. Tephrosia Vogelii. Pace Project. Action Sheet 53. 2013.
  4. Koigi, Bob. Tephrosia Leaf Offers Low-Cost Tick Protection. New Agriculturalist. November 2011.
  5. «Production of rotenoids by heterotrophic and photomixotrophic cell cultures of tephrosia vogelii». Phytochemistry 34 (6). doi:10.1016/S0031-9422(00)90838-0.
  6. «Tephrosia vogelii». Tropicos.org. Missouri Botanical Garden. Consultáu'l 4 de xineru de 2014.
  7. Quattrocchi, Umberto (2000). CRC World Dictionary of Plant Names: Common Names, Scientific Names, Eponyms, Synonyms, and Etymology. CRC Press.
  8. Tephrosia vogelii en PlantList

Bibliografía

  1. AFPD. 2008. African Flowering Plants Database - Base de Donnees des Plantes a Fleurs D'Afrique.
  2. CONABIO. 2009. Catálogu taxonómicu d'especies de Méxicu. 1. In Capital Nat. Méxicu. CONABIO, Mexico City.
  3. Duchen, P. & S. G. Beck. 2012. Estudiu taxonómicu de les Lleguminoses del Parque Nacional Area Natural de Manexu Integráu (PN-ANMI) Cotapata, La Paz-Bolivia. Revista Soc. Boliv. Bot. 6(1): 13–51.
  4. Forzza, R. C. 2010. Llista de espécies Flora do Brasil http://floradobrasil.jbrj.gov.br/2010. Jardim Botânico do Rio de Janeiro, Rio de Janeiro.
  5. Molina Rosito, A. 1975. Enumeración de les plantes d'Hondures. Ceiba 19(1): 1–118.
  6. Flora of China Editorial Committee. 2010. Flora of China (Fabaceae). 10: 1–642. In C. Y. Wu, P. H. Raven & D. Y. Hong (eds.) Fl. China. Science Press & Missouri Botanical Garden Press, Beijing & St. Louis.

Enllaces esternos

Cymbidium Clarisse Austin 'Best Pink' Flowers 2000px.JPG Esta páxina forma parte del wikiproyeutu Botánica, un esfuerciu collaborativu col fin d'ameyorar y organizar tolos conteníos rellacionaos con esti tema. Visita la páxina d'alderique del proyeutu pa collaborar y facer entrugues o suxerencies.
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Tephrosia vogelii: Brief Summary ( астурски )

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Tephrosia vogelii

Tephrosia vogelii, o barbasco guineanu, ye una especie de planta con flores del xéneru Tephrosia.

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Umuruku ( руандски )

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Umuruku cyangwa Umurukuruku (izina ry’ubumenyi mu kilatini Tephrosia vogelii) ni ikimera.

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Tephrosia vogelii
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Tephrosia vogelii
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Tephrosia vogelii ( англиски )

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Plants growing in a greenhouse

Tephrosia vogelii, the Vogel's tephrosia,[2] fish-poison-bean[3] or Vogel tephrosia[3] (English), tefrósia[3] (Portuguese) or barbasco guineano[3] (Spanish), is a flowering plant species in the genus Tephrosia.[3]

It is a herb or small tree that is native to tropical Africa and has also been used in tropical America as well as South and Southeast Asia.[4] It is commonly used to deter pests and diseases, specifically fleas and ticks on animals. It is not suitable for livestock or human consumption because it is not highly nutritious and can be poisonous for fish and some other animals.[4] Since it is a nitrogen-fixing plant, it can be intercropped with other plants and used as a source of green manure.[5]

Tephrosia vogelii is commonly known as the “fish bean”, “fish-poison bean”, or “vogel’s tephrosia”.[4] It is a small tree used by farmers in numerous countries in Africa to get rid of pests on livestock, control pests in cultivated fields as an organic pesticide, improves soil fertility, as a medicine for skin diseases and internal worms, and for storage of crops.[6] The use of “Tephrosia leaf extract as a low cost acaricide is spreading to farmers in central Kenya” and has been very successful in terms of its results.[5]

Description

Tephrosia vogelii is a soft, woody herb with dense foliage. It stands 0.5–4 m tall, and contains stems and branches with short and long white or rusty brown hairs. Long, narrow leaves branch out from stems, as well as sack like shapes that contain the seeds of the plant for reproduction.[4]

History, geography and ethnography

Tephrosia vogelii is native to tropical Africa. It was introduced as a cover crop in tropical America as well as South and Southeast Asia.[4] In 1908, it was introduced to Java and is now grown and found throughout regions of Malesia. In Sub-Saharan Africa, Tephrosia vogelii is a wild growing plant. Traditionally in Kenya, it has been used by Samburu and Massai pastoralists to get rid of ticks on their livestock.[5] Recently, it has been investigated for its use within smallscale dairy herds in Mashonaland Central Province in Zimbabwe.[4] Striking similarities have been found between Tephrosia extract and Triatix dip, which is the most common conventional acaricide. Research has revealed that there is no difference between the two, and Tephrosia has been recommended for smallscale farmers in regions where veterinary drugs are not readily available.[5]

Growing conditions

When it comes to its growing conditions, Tephrosia vogelii comes with many benefits. Firstly, it only takes three months to mature.[5] It is also good as a shade or boundary crop and can be planted between rows of other plants or around the circumference.[5] Planting of Tephrosia should be done at the beginning or middle of the rainy season in the region.[4]

It is found in various habitats and can adapt to many different climates and weather types. Tephrosia is grown in vegetations similar to the savannah, grassland areas, forest margina, shrubland, wasteland and fallow fields.[4] Since it is highly adaptable, this plant a great option to grow in most areas. Tephrosia reproduces through seeds. Without pesticide and chemical treatment, the seedling survival rate is 60%.[4] Germination is stimulated when it is soaked in warm water.[4] Since it grows slowly, it does not compete with maize or other crops, though there may be some competition with weeds. Planting stations require weeding and care during the beginning of the growth period.[6] It is tolerant to pruning, drought, strong wind, and grazing.[4] However, drought often stops it from re-sprouting, so the more water it has, the more successful it will be for future use.[4]

Stress tolerance

Tephrosia grows better in acidic soils, and forms root nodules while fixing atmospheric nitrogen. It grows more slowly in poor soils and is also more prone to diseases, though it is still typically fairly successful.[4] It grows best where the average temperature sits between 12 and 27 degrees Celsius which is a moderate temperature and makes this plant adaptable in many places. It needs about 850–2650 mm of rainfall annually on average. It grows well on andosols soil type which is not subject to flooding. This unique plant is also tolerant to poor soils with a low pH though it is not the best for it [4] .

Uses of Tephrosia

Tephrosia can be used for various purposes besides human and livestock consumption which makes it a diverse and helpful plant. Its most common use is for organic tick control.[5] First, leaves from the Tephrosia plant are ground up and a juice is extracted which is then used on the animal. The green liquid from the plant is mixed with water and is then applied to the animal’s skin with a piece of cloth or a sponge.[5] A little bit of soap can be added to the liquid to make it stick to the skin. Usually it is left on the animal for a week after which results appear. It is only effective against ticks that still have soft skin and are immature.[5] This is a great practice for farmers that do not have access to veterinary medicine. Tephrosia can also be used as a fish poison, because chemicals in the plant react to chemicals in the fish and stupefy them so they can be easily caught. [4]

Tephrosia vogelii is not used for human or livestock consumption,[5] although another great use is for a natural, organic pesticide on farmer’s crops. Its leaves contain high amounts of nutrients, including nitrogen, which is important for good plant development 3. When Tephrosia plants are cut down, the leaves are worked into the soil and the nutrients can then be used by the plants that are grown in the field after.[6]

Although Tephrosia vogelii is not consumed directly, it can be used to increase the yield of various crops.[7] For example, leaf extracts of Tephrosia vogelii are used as chemical pesticides. Crops that have had this extract applied show significant decreases in insect and other pest activity. Therefore, crops can grow in areas that they could not before, if they are grown alongside Tephrosia vogelii. In fact, studies have shown a 46.2-52.2% decrease in grain damage. Grain damage was measured by the amount of kernels that were destroyed and also by the net weight loss of the crop. This number varies based on method of storage, type of insect measured, and type of stored grain. In one particular study, the extract killed 40% of the attacking insects after a 21-day period. This decrease is about what would be expected from most chemical pesticides.[8]

However, insecticide is not its only use. Tephrosia vogelii can also increase various nutrients in the soil and is often used in intercropping. Studies have shown a 30% increase in soil nutrients, and as a result, a 23-26% greater crop yield.[9] Tephrosia treatments increased organic carbon and mineral nitrogen in the soil. The experiment that discovered this used pots with various concentration of Tephrosia vogelii to be grown along with corn. The pots that contained Tephrosia showed a large increase in nitrogen and carbon. To determine this, researchers used weeds and insects to measure nitrogen and potassium content of the soil, respectively.[10] Therefore, a well designed intercropping system could dramatically increase crop production in arid land. Normally, if different crops are grown together, there is less yield than if they were grown alone, but when grown together with Tephrosia, the crop yield increased. This shows that Tephrosia vogelii has a synergistic effect with multiple crops including coffee and corn. Increased nutrients are yet another way Tephrosia vogelii can improve the yield of other crops. Tephrosia might not grow well alone, but if it is grown along with another crop, it can grow up to 6 times more than it would alone.[11] Its poor growth is often due to the high acidity of the soil, as well as low calcium, low sodium, and low potassium.

Although an increase in organic carbon is important, the main function of Tephrosia vogelii is to increase nitrogen content in the soil. This increase can be measured using organisms that feed off the nitrogen. However, as this is not a direct measurement, the crop yield might be over or underestimated. Tephrosia vogelii can be used in any environment, but it is best used in an arid environment such as southern and eastern Africa where crops are extremely difficult to grow alone.[11] Using it, farmers can maximize the amount of crop yield by increasing soil fertility and removing insects and other pests. If this species is developed further, it might be able to provide an even greater synergistic effect and crop yield in these arid environments.

Economics

Though this plant is not typically used for trade or profit, it is very economical to the farmers themselves. The affordability of Tephrosia makes it very attractive to subsistence and small scale farmers who raise livestock.[5] Tephrosia vogelii seeds are typically sold for around $0.20 per kilo, which is very inexpensive compared to most other crop seeds offered on the market.[6] In Kenya specifically it is readily available at the Kenya Organic Agricultural Network offices and KIOF.[5]

Constraints to wider adoption

One limitation to this crop is that because it is used as a fish poison and is poisonous to various species, the Kenyan authorities have banned its cultivation near large bodies of water.[5] This means that people that live in coastal areas cannot grow this crop close to where they live because of its dangers to the lives of marine animals.

Tephrosia is not adopted in a more broad spectrum due to the fact that it is not for livestock or human consumption. If it had nutritional values and was safe to eat, it might be more commonly grown or sold for profit. Because it is mainly used to deter pests from livestock, it is often forgotten about when farmers think about planting or adapting to new crops to plant. This is a disadvantage because Tephrosia would be a very helpful crop if more farmers knew about it.

Practical information

This plant can be very useful for farmers as it can help improve soil fertility, rid pests from storage crops and livestock, and can be used as a pesticide on other crops in the field. Planting seeds is easy after the simple germination process. The plant only takes 3 months to mature, and seeds can be collected from trees between July and September typically by picking the brown pods with ripe seeds.[6] They can be easily stored which is another advantage for farmers and can be spread on other crops to protect them from pests while they are also in storage.[6] It is a cheap solution for farmers without access to veterinary medicine, and can ensure protection of their domestic animals.[6] For more information on this topic, there are various online resources that can be used, specifically in the New Agriculturalist or paceproject.net.[6]

References

  1. ^ "The Plant List: A Working List of All Plant Species". Retrieved April 3, 2014.
  2. ^ USDA, NRCS (n.d.). "Tephrosia vogelii". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 8 December 2015.
  3. ^ a b c d e "Tephrosia vogelii". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 2010-11-29.
  4. ^ a b c d e f g h i j k l m n o World Agroforestry Centre. A Tree Species Reference and Selection Guide: Tephrosia Vogelii. Agroforestry Tree Data Base. 2011.
  5. ^ a b c d e f g h i j k l m Koigi, Bob (November 2011). "Tephrosia Leaf Offers Low-Cost Tick Protection". New Agriculturalist.
  6. ^ a b c d e f g h PACE. Tephrosia vogelii. Pace Project. Action Sheet 53. 2013.
  7. ^ Kuntashula E, Sileshi G, Manfongoya PL, Banda J (2006). Farmer participatory evaluation for the potential for organic vegetable production in the wetlands of Zambia. Outlook on Agriculture 35(4): 299-305.
  8. ^ Chebet F, Deng AL, Ogendo JO, Kamau AW, Bett PK (2013). “Bioactivity of Selected Plant Powders against Prostephanus truncates (Coleoptera: Bostrichidae) in Stored Maize Grains.” Plant Protection Science 49(1): 34-43.
  9. ^ Bucagu C, Vanlauwe B, Giller KE (2013). “Managing Tephrosia mulch and fertilizer to enhance coffee productivity on smallholder farms in the Eastern African Highlands.” European Journal of Agronomy 48: 19-29.
  10. ^ Ngegba MS, Mugasha AG, Chamshama SAO, Kimaro AA (2007). “Tephrosia biomass yield and soil fertility in one season relay intercropping with maize in semiarid gairo, Tanzania.” Discovery and Innovation 19: 24-35.
  11. ^ a b Sileshi G, Mafongoya PL (2003). “Effect of rotational fallows on abundance of soil insects and weeds in maize crops in eastern Zambia.” Applied Soil Ecology 23(3): 211-222.

Data related to Tephrosia vogelii at Wikispecies

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Tephrosia vogelii: Brief Summary ( англиски )

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Plants growing in a greenhouse

Tephrosia vogelii, the Vogel's tephrosia, fish-poison-bean or Vogel tephrosia (English), tefrósia (Portuguese) or barbasco guineano (Spanish), is a flowering plant species in the genus Tephrosia.

It is a herb or small tree that is native to tropical Africa and has also been used in tropical America as well as South and Southeast Asia. It is commonly used to deter pests and diseases, specifically fleas and ticks on animals. It is not suitable for livestock or human consumption because it is not highly nutritious and can be poisonous for fish and some other animals. Since it is a nitrogen-fixing plant, it can be intercropped with other plants and used as a source of green manure.

Tephrosia vogelii is commonly known as the “fish bean”, “fish-poison bean”, or “vogel’s tephrosia”. It is a small tree used by farmers in numerous countries in Africa to get rid of pests on livestock, control pests in cultivated fields as an organic pesticide, improves soil fertility, as a medicine for skin diseases and internal worms, and for storage of crops. The use of “Tephrosia leaf extract as a low cost acaricide is spreading to farmers in central Kenya” and has been very successful in terms of its results.

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Tephrosia vogelii ( шпански; кастиљски )

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Tephrosia vogelii, o barbasco guineano, es una especie de planta con flores del género Tephrosia.[1]

 src=
Vista de la planta

Distribución y hábitat

Tephrosia vogelii es una hierba o árbol pequeño que es nativa de África tropical y también se ha utilizado en la América tropical, así como el sur y sudeste de Asia.[2]

Descripción

Es un pequeño árbol utilizado por los agricultores en numerosos países de África para deshacerse de las plagas en el ganado, para controlar las plagas en los campos de cultivo como un pesticida orgánico, mejora la fertilidad del suelo, y es un medicamento para enfermedades de la piel y los gusanos internos, y para su uso en el almacenamiento de los cultivos.[3]​ Es una hierba suave y amaderado con follaje denso. Alcanza un tamaño 0,5-4 m de altura, y contiene los tallos y ramas con los pelos marrones blancas u oxidadas cortas y largas. Hojas largas y estrechas se ramifican a partir de los tallos, así como de saco formas que contienen las semillas de la planta para la reproducción. El uso de "extracto de hoja de Tephrosia vogelii de bajo costo se está extendiendo a los agricultores en el centro de Kenia", y ha sido muy exitoso en términos de sus resultados.[4]

Usos

Se utiliza comúnmente para eliminar las plagas y enfermedades, pulgas y garrapatas en animales específicamente. No es adecuado para el ganado o consumo humano, ya que no es muy nutritivo y puede ser tóxico para los peces y otros animales.[2]​ El hambre y la pobreza en todo el mundo es un problema creciente y esta planta se puede utilizar como solución para ayudar a aliviar este problema.

Principios activos

Deguelin y tephrosin pueden encontrarse en Tephrosia vogelii.[5]

Taxonomía

Tephrosia vogelii fue descrita por Joseph Dalton Hooker y publicado en Journal of the Proceedings of the Linnean Society 4(Suppl.): 111–112. 1860.[6]

Etimología

Tephrosia: nombre genérico que deriva de las palabras griegas: τεφρος (tephros), que significa "ceniciento", en referencia a la coloración grisácea dado a las hojas por sus densos tricomas.[7]

vogelii: epíteto otorgado en honor del botánico Julius Rudolph Theodor Vogel.

Sinonimia
  • Cracca vogelii (Hook.f.) Kuntze[8]

Referencias

  1. «GRIN Species Records of Tephrosia vogelii». Germplasm Resources Information Network. United States Department of Agriculture. Archivado desde el original el 7 de septiembre de 2010. Consultado el 29 de noviembre de 2010.
  2. a b World Agroforestry Centre. A Tree Species Reference and Selection Guide: Tephrosia Vogelii. Agroforestry Tree Data Base. 2011.
  3. PACE. Tephrosia Vogelii. Pace Project. Action Sheet 53. 2013.
  4. Koigi, Bob. Tephrosia Leaf Offers Low-Cost Tick Protection. New Agriculturalist. November 2011.
  5. Lambert, Nadine; Trouslot, Marie-France; Nef-Campa, Claudine; Chrestin, Hervé (1993). «Production of rotenoids by heterotrophic and photomixotrophic cell cultures of tephrosia vogelii». Phytochemistry 34 (6): 1515. doi:10.1016/S0031-9422(00)90838-0.
  6. «Tephrosia vogelii». Tropicos.org. Missouri Botanical Garden. Consultado el 4 de enero de 2014.
  7. Quattrocchi, Umberto (2000). CRC World Dictionary of Plant Names: Common Names, Scientific Names, Eponyms, Synonyms, and Etymology. IV R-Z. CRC Press. p. 2642. ISBN 978-0-8493-2678-3.
  8. Tephrosia vogelii en PlantList

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Tephrosia vogelii: Brief Summary ( шпански; кастиљски )

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Tephrosia vogelii, o barbasco guineano, es una especie de planta con flores del género Tephrosia.​

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Tephrosia vogelii ( француски )

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Tephrosia vogelii est une espèce de plantes de la famille des Fabaceae et du genre Tephrosia, elle est endémique d'Afrique tropicale.

Elle est aussi appelée téphrosie de Vogel ou haricot empoisonneur de poissons. Son utilisation la plus courante est le contrôle biologique des tiques.

Description

Tephrosia vogelii est une herbe ou un petit arbre originaire d'Afrique tropicale au feuillage dense (également utilisé en Amérique tropicale ainsi qu'en Asie du Sud et du Sud-Est).

Il mesure 0,5–4 m de haut et contient des tiges et des branches à poils courts et longs blancs ou brun rouille.

Des feuilles longues et étroites se ramifient à partir des tiges, ainsi que des formes semblables à des sacs qui contiennent les graines de la plante.

Utilisations

Tephrosia vogelii est couramment utilisé :

  • comme pesticide biologique pour dissuader les ravageurs et les maladies, en particulier les puces et les tiques sur les animaux. L'extrait de feuilles de Tephrosia comme acaricide à faible coût a été utilisé avec de bons résultats dans différentes régions (par les pasteurs Samburu et Massai du Kénya, dans la province du Mashonaland Central au Zimbabwe). Des similitudes ont été trouvées entre l'extrait de Tephrosia et la trempette Triatix, qui est l'acaricide conventionnel le plus courant. Les feuilles de la plante Tephrosia sont broyées et un jus est extrait qui est ensuite utilisé sur l'animal. Le liquide vert de la plante est mélangé avec de l'eau et est ensuite appliqué sur la peau de l'animal avec un morceau de tissu ou une éponge. Un peu de savon peut être ajouté au liquide pour le faire adhérer à la peau. Habituellement, il est laissé sur l'animal pendant une semaine, après quoi les résultats apparaissent. Il n'est efficace que contre les tiques à peau douce et immatures. Il s'agit d'une excellente pratique pour les éleveurs qui n'ont pas accès à la médecine vétérinaire.
  • La tephrosie peut également être utilisée comme poison pour les poissons pour les attraper facilement.
  • Tephrosia vogelii n'est pas utilisé pour la consommation humaine ou animale car il peut être toxique.
  • On l'utilise aussi pour stockage des récoltes. Les cultures sur lesquelles cet extrait a été appliqué montrent une diminution significative de l'activité des insectes et autres ravageurs. Des études ont montré une diminution de 50% des dommages aux grains. Cette diminution correspond à ce que l'on pourrait attendre de la plupart des pesticides chimiques.
  • comme plante fixatrice d'azote, elle peut être associée à d'autres plantes et utilisée comme source d'engrais vert pour améliorer la fertilité du sol car ses feuilles contiennent de grandes quantités de nutriments en plus de l'azote. Des études ont montré une augmentation de 30% des éléments nutritifs du sol et, par conséquent, une augmentation de 23 à 26% du rendement des cultures. Les traitements de Tephrosia ont augmenté le carbone organique et l'azote minéral dans le sol. Par conséquent, un système de culture intercalaire bien conçu pourrait augmenter considérablement la production agricole dans les terres arides. Normalement, si différentes cultures sont cultivées ensemble, le rendement est moindre que si elles étaient cultivées seules, mais lorsqu'elles sont cultivées avec Tephrosia, le rendement des cultures augmente. Cela montre que Tephrosia vogelii a un effet synergique avec plusieurs cultures, dont le café et le maïs. L'augmentation des nutriments est un autre moyen pour Tephrosia vogelii d' améliorer le rendement d'autres cultures. La tephrosia peut ne pas bien pousser seule, mais si elle est cultivée avec une autre culture, elle peut pousser jusqu'à 6 fois plus que seule. Sa croissance médiocre est souvent due à la forte acidité du sol, ainsi qu'à une faible teneur en calcium, en sodium et en potassium.

Bien qu'une augmentation du carbone organique soit importante, la fonction principale de Tephrosia vogelii est d'augmenter la teneur en azote dans le sol.

  • comme médicament pour les maladies de la peau et les vers internes.

Distribution

Tephrosia vogelii provient d'Afrique tropicale. Il a été introduit comme plante de couverture en Amérique tropicale ainsi qu'en Asie du Sud et du Sud-Est. En 1908, il a été introduit à Java et est maintenant cultivé et trouvé dans toutes les régions de Malaisie. En Afrique subsaharienne, Tephrosia vogelii est une plante sauvage.

Culture

On le trouve dans divers habitats et peut s'adapter à de nombreux climats et types de temps différents.

Tephrosia vogelii présente de nombreux avantages :

  • une croissance rapide (seulement trois mois pour mûrir).
  • bon comme plante d'ombre et peut être planté entre des rangées d'autres plantes ou autour de la circonférence.

La plantation de Tephrosia devrait être effectuée au début ou au milieu de la saison des pluies.

La tephrosia est cultivée dans des végétations similaires à la savane, aux prairies, à la lisière des forêts, aux arbustes, aux friches et aux jachères. Puisqu'elle est hautement adaptable, cette plante est une excellente option pour se développer dans la plupart des régions. La tephrosie se reproduit à travers les graines. Sans pesticides ni traitement chimique, le taux de survie des semis est de 60%. La germination est stimulée lorsque la graine est trempée dans de l'eau chaude.

Les plantations nécessitent un désherbage et des soins au début de la période de croissance. Il tolère la taille, le vent fort et le pâturage mais a besoin d'eau pour se ressemer naturellement. Il a besoin d'environ 850 à 2650 mm de précipitations par an en moyenne.

Tephrosia pousse mieux dans les sols acides et forme des nodules racinaires tout en fixant l'azote atmosphérique. Elle pousse plus lentement dans les sols pauvres et est également plus sujette aux maladies, même si elle réussit généralement assez bien. Il pousse mieux là où la température moyenne se situe entre 12 et 27 degrés Celsius.

Économie

Bien que cette plante ne soit généralement pas utilisée pour le commerce ou le profit, elle est très économique pour les agriculteurs eux-mêmes. L'abordabilité du Tephrosia le rend très attrayant pour les petits agriculteurs de subsistance qui élèvent du bétail. Les graines de Tephrosia vogelii sont généralement vendues pour environ 0,20 $ le kilo, ce qui est très bon marché par rapport à la plupart des autres semences de cultures proposées sur le marché . Au Kenya en particulier, il est facilement disponible dans les bureaux du Kenya Organic Agricultural Network et KIOF.

Contraintes à une adoption plus large

Une limitation de cette culture est liée au fait qu'elle soit utilisée comme poison pour les poissons et est toxique pour diverses espèces, les autorités kenyanes ont interdit sa culture à proximité de grandes étendues d'eau. Cela signifie que les personnes qui vivent dans les zones côtières ne peuvent pas cultiver cette culture près de l'endroit où elles vivent en raison de ses dangers pour la vie des animaux marins.

Notes et références

Annexes

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Tephrosia vogelii: Brief Summary ( француски )

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Tephrosia vogelii est une espèce de plantes de la famille des Fabaceae et du genre Tephrosia, elle est endémique d'Afrique tropicale.

Elle est aussi appelée téphrosie de Vogel ou haricot empoisonneur de poissons. Son utilisation la plus courante est le contrôle biologique des tiques.

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Cốt khí lông vàng ( виетнамски )

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Đối với các định nghĩa khác, xem Cốt khí (định hướng).

Cốt khí lông vàng (danh pháp: Tephrosia vogelii) là loài thực vật thuộc chi Cốt khí Tephrosia[1].

 src=
Tephrosia vogelii

Cốt khí lông vàng chứa hai rotenoid là deguelintephrosin[2].

Chú thích

 src= Wikispecies có thông tin sinh học về Cốt khí lông vàng
  1. ^ “GRIN Species Records of Tephrosia vogelii. Germplasm Resources Information Network. United States Department of Agriculture. Truy cập ngày 29 tháng 11 năm 2010.
  2. ^ Production of rotenoids by heterotrophic and photomixotrophic cell cultures of tephrosia vogelii. Nadine Lambert, Marie-France Trouslot, Claudine Nef-Campa and Hervé Chrestin, Phytochemistry, Volume 34, Issue 6, December 1993, Pages 1515-1520, doi:10.1016/S0031-9422(00)90838-0

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Cốt khí lông vàng: Brief Summary ( виетнамски )

добавил wikipedia VI
Đối với các định nghĩa khác, xem Cốt khí (định hướng).

Cốt khí lông vàng (danh pháp: Tephrosia vogelii) là loài thực vật thuộc chi Cốt khí Tephrosia.

 src= Tephrosia vogelii

Cốt khí lông vàng chứa hai rotenoid là deguelintephrosin.

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威氏铁富豆 ( кинески )

добавил wikipedia 中文维基百科
二名法 Tephrosia vogelii
Hook. f.

威氏铁富豆学名Tephrosia vogelii),又名白花铁富豆,为豆科灰毛豆属下的一个种。

 src=
Tephrosia vogelii

参考文献

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威氏铁富豆: Brief Summary ( кинески )

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威氏铁富豆(学名:Tephrosia vogelii),又名白花铁富豆,为豆科灰毛豆属下的一个种。

 src= Tephrosia vogelii
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