Fig. 2: Model calibration and validation at site and country-level.
From: Climate-crop models to support opportunity crop adaptation in Africa
Figure showing the calibration results for four representative crops – fonio, cowpea, yams, and tomato in terms of phenology, biomass, and yield based on existing parameters and field experiments from the literature, and validation based on FAO country-level yield data. The treatments refer to different management practices such as planting date (detailed in Methods). The reason that the simulated results are generally higher than FAO in the validation is mainly attributed to the use of a non-nutrient stressed model, while FAO data is collected from in situ surveys with various environmental stresses including nutrient stress, pest and diseases, etc. and uncertainties in agricultural management38. The calibration results for all crops with field-level data available are shown in the Supplementary Figs. S1–S5. The validation results for all crops with country-level data available are shown in the Supplementary Fig. S6 and Table S4. All yields shown at 0% moisture content. Error bars are not available for the observations.
