The model has similar water and nitrogen balances as Ceres-Maize v2. Crop growth is based on radiation interception and a leaf area index-dependent Radiation Use Efficiency. Yield determination depends on the number of seeds per plant and on seed growth rates.
Phenological development depends on temperature and photoperiod.
A crop growth and development simulation model of the sunflower. Phenology model calibration and validation. Inaugural Congress European Society of Agronomy. Pars, 5-7 Diciembre de 1990 . Proceedings 13th International Sunflower Conference.