| evaluation of the impact of various agricultural practices on nitrate leaching under the root zone of potato and sugar beet using the stics soil-crop model. | the quaternary aquifer of vitoria-gasteiz (basque country, northern spain) is characterised by a shallow water table mainly fed by drainage water, and thus constitutes a vulnerable zone in regards to nitrate pollution. field studies were performed with a potato crop in 1993 and a sugar beet crop in 2002 to evaluate their impact on nitrate leaching. the overall predictive quality of the stics soil-crop model was first evaluated using field data and then the model was used to analyze dynamically t ... | 2008 | 18328537 |