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Recent development work on CERES-Wheat has largely focused on ensuring that, so far as possible, model parameters of CERES-Wheat and CROPSIM-Wheat (Hunt and Pararajasingham, 1995) are defined in a comparable manner. (1998) provides additional information on how growth, development and yield are simulated. The temperature effects includes a response to vernalizing temperatures, which allows distinguishing among the phenology of spring, facultative and winter wheats.
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Development is potentially affected both by temperature and daylength. Growth is modeled via a radiation use efficiency approach. Bread and durum wheat may be simulated using the CERES-Wheat model, whose origins trace back to modeling efforts of Joe Ritchie and colleagues in the 1970s (Ritchie et al., 1984).