MODELIZATION OF THE WINTER RAPE FLOWERING DATE

The study aims at introducing a modelisation of the winter rape flower ing date. Then the parameters of this model are estimated for differen t varieties of winter rape: Darmor, Bienvenu, Euroi, Bristol, Aligator , Goeland, Vivol and Symbol. Then, we validate the model using cross-v alidation techniques. This type of validation is necessary if few data are used to both estimate the model parameters and validate the model .