En Côte d’Ivoire, la pauvreté des sols est une contrainte pour la productivité agricole. L’objectif de cette étude était de produire un compost à base de rafles de palmier afin d’améliorer les propriétés physicochimiques des sols pauvres en matières organiques. Quatre traitements T0 (720 kg de rafles + 0 kg de fientes de volaille), T1 (720 kg de rafles + 200 kg de fientes de volaille), T2 (720 kg de rafles + 400 kg de fientes de volaille) et T3 (720 kg de rafles + 600 kg de fientes de volaille), ont été compostés durant 6 mois. Les teneurs en nutriments et éléments traces métalliques (ETM) dans chacun des traitements ont été évaluées et comparées les unes par rapport aux autres. Le traitement T3 a révélé des teneurs élevées en N (14840 mg.kg-1), P (6327,5 mg.kg-1), K (19930 mg.kg-1), Mg (14160 mg.kg-1) et Ca (4140 mg.kg-1) et des concentrations en ETM en deçà des seuils de toxicité avec Pb : 88,5 mg.kg-1, Zn : 167,5 mg.kg-1et Cr : 58 mg.kg-1). Ce compost pourrait donc être utilisé comme amendement pour ces ferralsols marginaux dans le Sud-Ouest de la Côte d’Ivoire. © 2020 International Formulae Group. All rights reserved. Mots clés: Rafles de palmier, compost, fertilité des sols, ETM, Côte d’Ivoire English Title: Characterization of the physicochemical and chemical properties of a compost issued from a mixture of palm empty fruit bunch and chicken manure in South West of Côte d’Ivoire English Abstract In Côte d’Ivoire, soil poverty reduces agricultural productivity. The aim of this study is to produce compost based on palm stalks to improve the physico-chemical properties of sandy soils with low organic matter content. Four treatments T0 (720 kg of empty fruit bunch + 0 kg of chicken manure), T1 (720 kg of empty fruit bunch + 200 kg of chicken manure), T2 (720 kg of empty fruit bunch + 400 kg of chicken manure) and T3 (720 kg of empty fruit bunch + 600 kg of chicken manure) of mixed various quantities of palm empty fruit bunch and chicken manure were up in field for 6 months. The levels of nutrients and heavy metal contents in each treatment were evaluated and compared against each other. Treatment T3 highlights high levels of N (14840 mg.kg-1), P (6327.5 mg.kg-1), K (19930 mg.kg-1), Mg (14160 mg.kg-1) and Ca (4140 mg.kg-1) and heavy metal content below the toxicity thresholds (Pb: 88.5 mg.kg-1, Zn: 167.5 mg.kg-1 and Cr: 58 mg.kg-1). This compost could therefore be used as sandy soil amendment in the South West of Côte d’Ivoire. © 2020 International Formulae Group. All rights reserved. Keywords: Palm empty fruit bunch, compost, soil fertility, heavy metal, Côte d’Ivoire

A study on the agronomic potential of two legumes, Acacia mangium and peanut, was conducted in the town of Grand-Lahou in the South-West of Côte d'Ivoire. This paper focuses on assessing the capacity of the two legumes to provide organic matter to the poor soil in a bid to restore it for yam cultivation. The apparatus in complete randomized blocks comprising 4 treatments was installed from 2017 to 2019 on a sandy soil with 5% slope. This include the peanut treatment intake T1 (20,000 feet/ha), Acacia mangium intake T2 (834 feet/ha), peanut + Acacia mangium intake T3, and the apparatus without fertilizer intake T0. The soil responsiveness, the biomass characterization, and the nodules enumeration are the different agronomic parameters collected periodically in the test. The low pH obtained under pure peanut (pH = 4.44) and under pure Acacia mangium (pH = 4.09) indicated that the soils under the two treatments are strongly acidic (pH <5, 5). The plot consisting entirely of peanut produced a significant leaf biomass estimated at 94,656 leaves compared to that produced by peanut associated with Acacia mangium (66,960 leaves) in six months. The weight of the litter under T2 (between 0.85 t/ha.year-1 and 1.13 t/ha.year-1) was on average higher than the