1. Postgraduate Program in Agronomy, Federal University of Piaui, Teresina, PI, Brazil
2. Soil quality laboratory, Federal University of Piaui, Teresina, PI, Brazil
3. Department of Plant Science, Federal University of Piaui, Teresina, PI, Brazil
4. Department of Agricultural Engineering and Soil Science, Federal University of Piaui, Teresina, PI, Brazil
5. Brazilian Agricultural Research Corporation, Teresina, Piauí, Brazil