Horizon 1 1 10 C-ACTI : Communications avec actes dans un congrès international Frontiers of soil science : technology and the information age : abstracts World Congress of Soil Science 369 BRESIL 2006 2006/07/09-15 Philadelphie IUSS fdi:010072618 ENG HAL:hal-00079685 https://www.documentation.ird.fr/hor/fdi:010072618 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers18-07/010072618.pdf Horizon (IRD) The Cerrados Biome is one of the major regions of Brazil with 24% of the Brazilian territory (204.106 ha). It is mainly located in the center of Brazil and corresponds to the whole Central Plateau. About 49% of the soils are Ferralsols and approximately 79.106 ha of these soils are dedicated to agriculture. The main characteristics of Ferralsols are a poor horizonation, a weak development of the macrostructure, and a strong submillimetric granular microstructure. 068