1. Department of Soil Science, “Luiz de Queiroz” College of Agriculture, University of São Paulo, Piracicaba, Brazil
2. Department of Soil Science, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil
3. Coordination of Integrate Technical Assistance, Secretariat of Agriculture and Supply, CATI/SAA, Piracicaba Regional, SP, Brazil
4. Department of Environmental Management, People’s Friendship University of Russia (RUDN University), V.V. Dokuchaev Soil Science Institute, Moscow, Russia
5. Department of Soil Science, Federal University of Pernambuco (UFPE), Recife, Pernambuco, Brazil
6. Federal University of Rio Grande do Norte, Caicó, Brazil