Pedon Characterization in the Caatinga Biome Area in Chapada Apodi, RN, Brazil

The Apodi Plateau is a Brazilian with important agricultural activity, which is located between the states of Ceara and Rio Grande do Norte, in an area of the Caatinga biome. Therefore, this work was developed to characterize the morphological, physical, chemical and mineralogical attributes of soil profiles of this region. For this purpose, trenches were open in three areas in the Tabuleiro Grande Settlement Project, in the municipality of Apodi, RN, Brazil. The profiles were described in the field and samples of the horizons were collected for physical, chemical and mineralogical analyzes. The profiles were classified up to the fourth categorical level and correlated with Soil Taxonomy.According to the Brazilian Soil Classification System, the soils studied were Vertissolo Haplico Ortico chernossolico (Mollisols), Chernossolo Rendzico Petrocalcico tipico (Mollisols) e Vertissolo Haplico Ortico chernossolico (Vertisols).