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De nos jours, la carence en fertilite des sols est un probleme tres repandu dans la plupart des pays subsahariens. G. sepium a ete teste en association avec le cotonnier, le mais et le sorgho afin de developper les meilleures pratiques dans deux stations de recherche et en milieu paysan dans les zones soudaniennes et soudano-guineenne du Mali. L'objectif de cette etude etait de developper, avec les producteurs participants, une technologie agro-forestiere basee sur le Gliricidia sepium dans le systeme de culture en couloir. Le dispositif experimental utilise a ete le Split plot a quatre repetitions. Le pH, le carbone organique du sol et l'azote ont ete analyse dans des echantillons de sol de 0 a 20 cm de profondeur preleves en 2016 au debut de l'experience et en 2018. Les rendements grains moyens de coton, de mais et de sorgho associes au G. sepium etaient respectivement de 812, 1457 et 1377 kg.ha-1, alors qu'ils etaient significativement plus faibles sans G. sepium, avec 623, 1014 et 807 kg.ha-1 respectivement. Pendant la troisieme annee suivant la plantation de G. sepium, la teneur en carbone organique et en azote total du sol a augmente de 5% dans les sols situes entre les allees. Le G. sepium en association avec les cultures a le potentiel d'ameliorer leurs rendements et le sol.Mots cles : Carbone organique, azote, rendements, zones soudanienne et soudano-guineenne, Mali English Title: Evaluation of Gliricidia sepium (Jacq.) Kunth ex. Walp effect on soil fertility, yields of cotton, maize and sorghum Nowdays, soil fertility deficiency is a widespread issue in most Sub-Saharian countries specially where the application of less input is the common agricultural practices. Thus the legume plant, G. sepium was established with cotton, maize and sorghum to develop best practices for increasing crop yield and soil fertility at two research stations and farming environment in the Sudanian and Sudano-Guinean zones of Mali. The objective of this study was to develop an agroforestry technology with farmers based on Gliricidia sepium in alley cropping system. The experimental design was Split plot with four replications. Soil pH, soil organic carbon and nitrogen were analyzed from 0-20 cm deep soil samples taken in 2016 at the beginning of the experiment and in 2018. Mean grain yields of cotton, maize and sorghum associated with G. sepium were 812, 1457 and 1377 kg.ha-1, respectively, while they were significantly lower without G. sepium with 623, 1014 and 807 kg.ha-1 as respectively cotton, maize and sorghum yield. In the third year after planting G. sepium, the soil organic carbon and total nitrogen content increased by 5% between the alleys. G. sepium in association with crops has the potential to improve crop yields and soil fertility.Keywords: Gliricidia sepium, organic carbon, nitrogen, yields, Mali.

Evaluation de la fertilité des sols et les rendements de cotonnier, maïs et sorgho à >Gliricidia sepium (Jacq.) Kunth ex. Walp