Assessment of the DRAINMOD-N II model for simulating nitrogen losses in newly reclaimed lands of Egypt

The study results showed good agreement between the observed and simulated results for both plots. The mean absolute error (MAE) of the drainage rate was less than 0.08 cm for the calibration plot over the two cropping seasons. The MAE results for the prediction of NO3-N drainage losses were 0.028 and 0.035 kg NO3-N/Feddan during cotton season and wheat season, respectively for the calibration plot. During the same period, MAE of the drainage rate was less than 0.04 cm for the validation plot. The MAE of NO3-N drainage losses was 0.024 and 0.013 kg NO3-N/Feddan during cotton season and wheat season, respectively for the validation plot. These results prove the DRAINMOD-N II capability to simulate nitrogen losses from the newly reclaimed agricultural lands under the Egyptian conditions.