Dataset of winter wheat yields in Germany between 1958 and 2015 from N-fertilization experiments - TRIAL_SITES

This data set (TRIAL_SITES) is the starting point of a larger data set that contains data and information used in the study “Yield development of German winter wheat between 1958 and 2015” in the Project “Data-Meta Analysis to assess the productivity development of cultivated plants” funded by the DFG. This starting table contains geographical and environmental information about the experimental sites at which the N-fertilisation experiments were conducted. Amon other topics, this data set can be mainly used to analyse the impact of climatic changes on the development of winter wheat in Germany. The data set comprises following data: - Winter wheat (Triticum aestivum) yields and nitrogen application amounts from nitrogen fertilization experiments of variable duration (1-6 years) carried out at 43 locations across Germany, between 1958 and 2015, and found in 34 different sources in the literature. - The derived maximum yields (Ymax) and optimal nitrogen amounts (Nopt) from the nitrogen experiments, function coefficients, and statistics. - Geographical information (latitude, longitude, altitude) and other site specific information of the experimental sites (soil type, soil yield potential, mean annual temperature, mean annual precipitation, mean annual climatic water balance, soil climate region, cultivation region). - Processed phenological and climatic data for each experimental site.