This data set consists of observations that were done during the PPS winter wheat field trials in Wageningen (The Netherlands). The experiment was conducted by the chair group Plant Production Systems (PPS) of Wageningen University and Research.The experiment consisted of two growing seasons (2013-2014 and 2014-2015), three nitrogen fertilization treatments (N1, N2, N3) and three cultivars (cv Julius, cv Ritmo, cv Tabasco).The experiment has been described in detail by Berghuijs et al (2023). The uploaded files are: 20231228_pps_winterwheat_trials_crop_nitrogen_and_phosphor.xlsx: contains measurements of crop N and crop P concentrations20231228_pps_winterwheat_trials_dry_matter.xlsx: contains measurements of dry matter, dry matter partitioning and specific leaf area20231228_pps_winterwheat_trials_phenology.xlsx: contains the sowing dates, dates of anthesis and harvest dates. Note that there were no separate measurements of phenology done per cultivar; only per growing season. References:Berghuijs, H. N. C., Silva, J. V., Rijk, H. C. A., van Ittersum, M. K., van Evert, F. K. & Reidsma, P. (2023). Catching-up with genetic progress: Simulation of potential production for modern wheat cultivars in the Netherlands. Field Crops Research 296: 108891. URL: https://doi.org/10.1016/j.fcr.2023.108891