*3.6. Model Performance*

The results of model evaluation for tomato DM indicated good agreement (EF = 0.65–0.83, and d = 0.87–0.96) and acceptable error margins (NRMSE = 17.7–42%) (Figure 10c–e).

**Figure 10.** Evaluation of simulated and observed aboveground dry matter of (**a**) maize in VF1 in 2014; (**b**) maize in BF1 in 2014; (**c**) tomato in BF1 in 2014–2015; (**d**) tomato in BF6 in 2014–2015; and (**e**) tomato in BF1 in 2015–2016, in the Vea and Bongo irrigation schemes.

The model evaluation for maize DM also suggested a good agreement (EF = 0.23–0.78, and d = 0.60–0.95) and an acceptable error margin (NRMSE = 11.5–13%). However, the low EF (0.23) for maize in the BF1 field (Figure 10b) could be due to the missing biomass data for the vegetative stage due to the late start of data collection.
