Uncertainty in simulating N uptake and N use efficiency in the crop rotation systems across Europe

Nitrogen use efficiency is becoming of increasing concern globally to ensure higher agricultural production with less fertilizer inputs. The aim of the study is (1) to evaluate the model performance in simulating crop N uptake in crop rotation systems across Europe within different calibration levels; (2) to assess the model ensemble effects in predicting N uptake; (3) to investigate different man-agement effects on N uptake and N use efficiency