Historical Tracking of Nitrate in Contrasting Vineyard Using Water Isotopes and Nitrate Depth Profiles

Matthias Sprenger1, Martin Erhardt2, Monika Riedel2 and Markus Weiler1, (1)Chair of Hydrology, Albert Ludwig University of Freiburg, Freiburg, Germany, (2)State Institute for Viticulture and Enology Freiburg, Freiburg, Germany