1. Department of Soils and Rural Engineering, Federal University of Paraíba (UFPB), Areia, Brazil
2. Department of Agronomic Engineering, State University of São Paulo (UNESP), Registro, Brazil
3. Department of Phytotechnics, Federal University of Ceará (UFC), Fortaleza, Brazil
4. Department of Fundamental and Social Sciences, Federal University of Paraíba (UFPB), Areia, Brazil