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The model was designed with specifications clearly indicating that it must be “a single model for different crops.

The model must incorporate the knowledge of specialists and generalists in order to remain general, robust, simple, operational and flexible.”

 The STICS model can be defined as a dynamic deterministic functional model (with a daily time step) that describes the thermal, radiative, water, carbon and nitrogen balances at the time scale of the crop cycle and the spatial scale of the pedon (homogeneous soil unit).

 In addition, this cropping system model can be used to simulate combinations of cropping and intercropping periods (crop sequences and rotations) as well as carbon and nitrogen balances in the medium term.