| Within the context of liberalisation experienced by the Malian economy since the beginning of the 1990s, spatial integration of cereal markets has been considered as a major tool as to avoid localised shortages due to production shortfalls. However, market dynamic reveals since then new patterns: the diversification of urban consumer demand towards "modern cereals", in particular rice and maize, drives the segmentation of the cereal market. As consumer s are likely to substitute traditional cereals, like millet and sorghum, for other cereal types, new market segments emerge. We account for this evolution with a theoretical model à la Hotelling : the good is considered according to two characteristics, the spatial localisation (local market) and the cereal... |
