Agronomic, weather, and remote sensing data for the simultaneous assessment of nitrogen and water status in winter wheat using hyperspectral and thermal sensors

This dataset includes agronomic, climatic, thermal and spectral information from field experiments conducted in Aranjuez (Central Spain) with winter wheat (Triticum aestivum L.) in 2018 and 2019. The total number of experiments was two, and each experiment comprises 32 plots with various combinations of water (2 levels) and nitrogen (4 levesl) applications. The agronomic data are summarized in an Excel file and contains the biomass, nitrogen concentration and content in the biomass, the shoot biomass, the shoot biomass nitrogen concentration and content, the spikes biomass, the spikes biomass nitrogen concentration and content, and the nitrogen nutrition index (NNI) at various dates. This crop file also contains the crop yield, protein content and N exported in the wheat grain (N output) at harvest in July.
The thermal and spectral file includes the average canopy temperature and the average spectral reflectance from each plot at various dates. The weather data file includes the main climate variables registered in a meteorological station located on the farm.

+ Value of the data:
Data relating agronomic and sensor information from wheat under different nitrogen and water conditions will be useful for understanding crop performance and optimizing irrigation and nitrogen fertilization. The data on nitrogen nutrition index (NNI) are particularly valuable because there is a need to relate solid nutritional indicators with remote sensing data.

+ Detailed description:
The file ‘Crop_agronomic_data_wheat.xlsx’ contains the specific date in which each sample was taken, the N and water level, the dry biomass (kg dm/ha), the N concentration (%) and N content (kg N/ha) of the aerial biomass, the shoot biomass (kg dm/ha) with its N concentration (%) and N content (kg N/ha), the spike biomass (kg dm/ha) with its N concentration (%) and N content (kg N/ha), the NNI adjusted and the NNI calculated following Justes equation. In addition, the dataset contains the wheat grain yield (kg dm/ ha), grain N concentration (%) and grain content or N output (kg N ha/1) at harvest in the two years were recorded.
The file ‘Crop_Reflectance_temp_from_Plane.xlsx’ contains the average canopy temperature (ºC) and the average spectral reflectance from each plot at various dates. The values were obtained from the airborne images acquired with thermal and hyperspectral cameras mounted on a plane that flight at 300 m over the experiment in March, April and May. The original images are available under reasonable request to the authors.
The ‘Weather_Data_Aranjuez_01_01_2018_31_12_2020’ file includes the main climate variables registered in a meteorological station located on the farm.

More detail about these data can be found in the article entitled ' Simultaneous assessment of nitrogen and water status in winter wheat using hyperspectral and thermal sensors’ published in European Journal of Agronomy (vol. 127, p. 126287) by Pancorbo et al. in 2021.