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Dans un contexte de desertification et avec la crise energetique, un bon nombre d’acteurs de developpement au Burkina Faso s’est interesse au Jatropha curcas L. comme source d’energie et de durabilite des productions. Afin d’evaluer l’influence de Jatropha sur les proprietes chimiques du sol et la productivite du sorgho associee, des essais ont ete suivis pendant trois ans dans le terroir de Torokoro en zone Sud soudanienne de pluviometrie d’environ 1200 mm. Les plants de Jatropha , âges de 6 ans, sont plantes aux ecartements de 5 m entre les lignes et 2 m entre les plants. Le dispositif experimental comporte trois blocs composes chacun de deux parcelles de 400 m 2 correspondants aux 2 traitements: une par celle avec l’association sorgho- Jatropha et une parcelle en culture pure de sorgho (temoin). Les prelevements de sol ont ete effectues sous houppier, a 1 m et2m de la haie. Les resultats indiquent que Jatropha ameliore la teneur du sol en carbone de 10% et de 8% en matiere organique par rapport au temoin. Jatropha est aussi source de phosphore et de potassium et influence positivement la productivite du sorgho. Jatropha ameliore donc les proprietes chimiques du sol et la productivite du sorgho. © 2015 International Formulae Group. All rights reserved. Mots cles: Jatropha curcas L., sol, Sorgho, Rendements, proprietes chimiques, Burkina Faso English Title: Influence of Jatropha hedges on the yield of a sorghum crop ( Sorghum vulgare ) in the western region of Burkina Faso: case of Torokoro locality English Abstract In a context of desertification and with the energy crisis, a number of development actors in Burkina Faso became interested in Jatropha curcas L. as a source of energy and sustainability of production. To assess the influence of Jatropha on soil chemical properties and on the productivity of associated sorghum, experiments were followed for three years in the village of Torokoro in south sudanian region, with a rainfall of about 1200 mm. Jatropha plants , aged 6, are planted at 5 m between rows and 2 m between plants. The experiment consisted of three blocks each consisting of two plots of 400 m 2 corresponding to two treatments: a plot with sorghum and Jatropha in association and a plot with sorghum only (control). Soil samples were taken under crown, at 1m and 2 m from the hedge. The results indicate that Jatropha improves the carbon content in the soil of 10%, and the organic matter content of 8% compared to the control. Jatropha is also a source of phosphorus and potassium and positively influences the productivity of sorghum. Therefore, Jatropha  improves the chemical properties of soil and productivity of sorghum. © 2015 International Formulae Group. All rights reserved. Keywords: Jatropha curcas L., soil, Sorghum, yields, chemical properties, Burkina Faso

international journal of biological and chemical sciences

Influence des haies de &lt;i&gt;Jatropha&lt;/i&gt; sur le rendement d’une culture de sorgho (&lt;i&gt;Sorghum vulgare&lt;/i&gt;) dans la zone Ouest du Burkina Faso: cas du terroir de Torokoro