%0 Conference Paper %A David, Christophe %A Jeuffroy, Marie-Hélène %A Valentin Morison, Muriel %A Herbain, Céline %D 2007 %F orgprints:10310 %K nitrogen management, soil-crop model, wheat, organic, validation %T Improvement of the soil-crop model AZODYN under conventional, low-input and organic conditions %U http://orgprints.org/10310/ %X The use of mechanistic crop modelling, simulating the dynamics of crop N requirements and nitrogen supply from the soil and fertilizers, can provide sound advice to users. This paper describes a methodological way to improve soil-crop modeling used for N management of conventional and organic wheat.