RT Journal Article T1 Resultados preliminares de la aplicación de lodos de depuradoras como fertilizante y su implicación en la migración de nitratos a través de de la zona no saturada T1 Preliminary result of the application from composted sewage sludge as fertilizer and its implication in the migration of nitrate through the unsatured zone A1 Reyes, J. A1 Martínez Pérez, Silvia A1 Sastre Merlín, Antonio A1 Bigeriego, M. A1 Porcel, M. A. AB The results of field experiments over use of the composted sewage sludge compared with mineral fertilizer in corn crops are presented. Also, the nitrate leaching through the unsaturated zone and its arrival to groundwater is studied.The amount of nitrate adds from the composted sewage sludge is, lesser than the traditionally fertilizers.This can substitute the traditionally fertilizers, because reduced the possibility of contamination and equaled the yield PB Sociedad Geológica de España YR 1996 FD 1996 LK http://hdl.handle.net/10272/12915 UL http://hdl.handle.net/10272/12915 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 30 may 2026