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L\'heterogeneite du sol est un handicap pour la gestion de sa fertilite et une preoccupation en experimentation agronomique. Sa caracterisation, par des facteurs a variabilite spatiale connue, pourrait y apporter une solution. La couleur, selon le code Munsell (TSL) a ete evaluee a cet effet a travers la description de l\'heterogeneite de 1028 echantillons de sol ferrallitiques provenant de la zone au-dessus du 7e parallele.La granulometrie, les teneurs du sol en C, Ptotal, Nl et en Ca, ainsi que les proprietes du complexe absorbant (S, CEC, V) ont ete comparees a la couleur, la roche-mere (Rm) et la profondeur du sol. Les analyses en composantes principales et de variances ont ete utilisees pour l\'analyse des donnees. Les resultats montrent que les sols de teintes 5YR et 7,5YR de l\'horizon de surface ont ete plus heterogenes que ceux de teintes 2,5YR et 10YR, et ceci quelque soit la profondeur du sol. De meme, une reduction desheterogeneites physique et chimique liee a la teinte, P et Rm ou par TSL du sol a ete observee. Ainsi, cette etude a permis de caracteriser l\'heterogeneite des sols ferrallitiques, a travers sa couleur. Soil heterogeneity is known to seriously hamper fertility management and causes concerns in agronomic trials. Soil characterization trough factors, which spatial variability is well established, could be an option. Therefore, the Munsell chart (TSL) of soils was evaluated through the description the heterogeneity of one thousand twenty-height ferrallitic soil samples from the area above the 7th parallel. Particle size, soil C, total P total N and Ca, as well as exchangeable bases (S), effective cation exchange capacity (ECC) and base saturation (V) were assessed in relation with soil TSL, bed rock characteristics (Rm) and soil depth. Principal components and variance analysis were used to analyse data. Results show that the 5YR and 7.5YR soil samples from the surface horizons showed more heterogeneity than those of 2.5YR and 10YR, regardlessof soil depth. Moreover, a reduction of soil physical and chemical heterogeneities, according to soil hue, depth and bedrock, was demonstrated. This study allows ferrallitic soil heterogeneity characterization by its colour. Keywords : Couleur du sol, proprietes du sol, sols ferrallitiques, variabilite, Cote d\'Ivoire Agronomie Africaine Vol. 20 (2) 2008: pp. 179-190

Utilisation des données pour l\'évaluation de l\'hétérogénéité des sols ferrallitiques par la couleur selon le code Munsell