1. Laboratory of Isotope Ecology Center for Nuclear Energy in Agriculture University of São Paulo Piracicaba Brazil
2. Lancaster Environment Centre Lancaster University Lancaster UK
3. Department of Soil Science Escola Superior de Agricultura Luiz de Queiroz University of São Paulo Piracicaba Brazil
4. Agência Paulista de Tecnologia dos Agronegócio Piracicaba Brazil
5. Department of Environmental Sciences Federal University of São Carlos Sorocaba Brazil
6. Faculdade de Ciências Agronômicas Universidade Estadual Paulista Botucatu Brazil