1. Brazilian Bioethanol Science and Technology Laboratory – CTBE/CNPEM Rua Giuseppe Máximo Scolfaro 10.000, CP. 13083‐970 Campinas SP Brazil
2. Soil Science department – ESALQ/USP University of Sao Paulo Av. Pádua Dias, 11 CP. 13418‐900 Piracicaba SP Brazil
3. Sao Paulo's Agency for Agribusiness Technology Center South Pole Rodovia SP 127, Km 30 CP. 13400‐970 Piracicaba SP Brazil
4. Stable Isotopes Laboratory ‐ CENA/USP University of Sao Paulo Av. Centenário, 303 CP. 13400‐970 Piracicaba SP Brazil