Dynamics of nitrogen uptake and mobilization in field-grown winter oilseed rape (Brassica napus) from stem extension to harvest: I. Global N flows between vegetative and reproductive tissues in relation to leaf fall and their residual N
1-UMR INRA-UCBN 950 EVA, Ecophysiologie Végétale, Agronomie et nutritions N, C, S, Institut de Biologie Fondamentale et Appliquée, Université de Caen Basse Normandie, F-14032 Caen Cedex, France.