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Les sols ferralitiques presentent des problemes de fertilite. Cette situation requiert une fertilisation raisonnee conciliant les exigences environnementales et les contraintes de production de plants. Cette etude vise a deceler l’apport de Jatropha curcas L. en matiere organique grâce au compostage et par addition de la sciure de bois. Les substrats ont ete mis dans des sachets en polyethylene pour recevoir les feves de cacaoyer ( Theobroma cacao L.) semees a plat. Ils se composent de 40% de compost de Jatropha curcas et de 60% de terre, puis de 40% d’un compost de Jatropha curcas avec la sciure de bois et 60% de terre. Le temoin est constitue uniquement de terre. Il ressort de la comparaison des parametres de germination et de croissance des plants qu’il existe uniquement une difference significative pour le diametre au collet dans le substrat 1 par rapport aux deux autres, selon le test de Newman-Keuls. Le substrat compose de J. curcas et de 60% de terre est le mieux indique pour la production de plants de cacaoyers sains et vigoureux dans ces conditions. Il serait souhaitable d’utiliser un compost mature lors des etudes complementaires. © 2019 International Formulae Group. All rights reserved Mots cles: Jatropha, cacaoyer, compost, pepiniere, germination, croissance English Title:  Regeneration of the cocoa-tree ( Theobroma cocoa L.) on a substrate based on Jatropha curcas L. compost English Abstract The ferralitic soils present problems of fertility. This situation requires a reasoned fertilization reconciling the environmental requirements and the constraints of production of seedlings. This study aims at detecting the contribution of Jatropha curcas L. as organic matter thanks to the composting and by addition of the sawdust. The substrates were put in polyethylene bags to receive beans of cacao-tree ( Theobroma cocoa L.)  sown flat. They are composed of 40% of compost of Jatropha curcas and 60% of soil, then of 40% of a compost of Jatropha curcas mixed to sawdust and 60% of soil. The witness is only made up of ground. It appears from the comparison of the germination and growth parameters of the seedlings that there exists only one significant difference for the diameter of the collet in substrate 1 compared to the two others, according to the test of Newman-Keuls. The substrate made up of J. curcas and 60% of soil is best indicated for the production of seedlings of healthy and vigorous cacao-trees under these conditions. It would be desirable to use a mature compost for the complementary studies. © 2019 International Formulae Group. All rights reserved Keywords: Jatropha , cacao-tree, compost, seedbed, germination, growth

Régénération du cacaoyer (<i>Theobroma cacao</i> L.) sur un substrat à base de compost de <i>Jatropha curcas</i> L.