Agricultural land sustainability soil of Piaui State, Brazil

The evaluation of the agricultural potential of the land establishes the use of natural resources to avoid situations of underuse or overuse, it consists in the interpretation of ecosystem qualities based on their limitations for agricultural use and alternative and correction or reduction possibilities these limitations through different management levels. The aims of this work were mapping of the agricultural potential of the Piaui state land soils. The method used to find the agricultural potential of the land was called the System Assessment of Agricultural Lands Fitness. It analyzed: 120 profiles data described in Technical Bulletin No. 63 of Estudo Expedito de Solos no Estado do Piaui prepared by the Servico Nacional de Levantamento e Conservacao de Solos of EMBRAPA; updating the naming soil profiles described in Exploratory survey -recognition of Piaui soil; and the soil map in the scale of 1:500,000, representing the study area and the occurrence and distribution of soil classes prevailing in the state. Most of Piaui land has agricultural potential for planted pastures (54,57%), thus having smaller areas for agricultural use in more intensive uses such as crops (26,74%).