cropdata – supplementary data (for spatial yield productivity data base for the ten most cultivated crops in Germany from 1989 to 2020) - version 1.0

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2022-10-06

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This data set is a supplementary data set containing the phenological and agricultural management data expressed using the BBCH-scale and days of the year (DOY) as supplement for the data set: http://dx.doi.org/10.22029/jlupub-7177. It contains the sowing and harvesting dates and other key events of the crop phenology cycle for the following crops: winter wheat, rye and winter mixed crops, spring and winter barley, oat, silage maize, oilseed rape and sugar beet for the years 1989 to 2020. However, not all years or locations are available. The data set is based on the phenological observations of crops from sowing to harvest v006 by the DWD (DWD Climate Data Center (CDC): Phenological observations of crops from sowing to harvest (annual reporters, historical), Version v006, 2019)downloaded from: ftp://opendata.dwd.de/climate_environment/CDC/observations_germany/phenology/annual_reporters/crops ,the station data provided by DWD (DWD Climate Data Center (CDC): Eintrittsdaten verschiedener Entwicklungsstadien landwirtschaftlicherKulturpflanzen von der Bestellung bis zur Ernte (Jahresmelder, historisch), Version v006, 2019) downloaded from: https://opendata.dwd.de/climate_environment/CDC/observations_germany/phenology/annual_reporters/vine/historical/PH_Beschreibung_Phaenologie_Stationen_Jahresmelder.txt , the phase description keys also provided by DWD (DWD Climate Data Center (CDC): Eintrittsdaten verschiedener Entwicklungsstadien landwirtschaftlicherKulturpflanzen von der Bestellung bis zur Ernte (Jahresmelder, historisch), Version v006, 2019) and downloaded from: https://www.dwd.de/DE/klimaumwelt/klimaueberwachung/phaenologie/daten_deutschland/jahresmelder/jahresmelder_beobachtungsprogramm.pdf?__blob=publicationFile&v=5 as well as the Natural Area Data following Meynen and Schmithüsen as provided by Bundesamt für Naturschutz (Bundesamt für Naturschutz, Fachgebiet I 1.2, Naturschutzinformation, Geoinformation, Open Data) and downloaded from: https://ffalle.bfn.de:443/ssf/s/readFile/share/1040/-305838928916869590/publicLink/Naturräumliche Gliederung.zip . The county borders were kindly provided by the Bundesamt für Geographie und Geodäsie © GeoBasis-DE / BKG (2022) - Datenlizenz Deutschland Version 2.0.

The data are available in the digital formats .csv and .netCDF. The .csv file contains the following column headers crop_type = the crop type, year = the harvest year, bbch = the BBCH value on the BBCH scale ( https://en.wikipedia.org/wiki/BBCH-scale ), reg_number = county or city identification number and doy = day of the year (DOI).

This file can be opened e.g. with MS Excel or Libre office or any other software to open .csv files. The files use three coordinates: longitude, latitude and year. The data variables are built as follows: or_bbch_99 where the first two letters are an abbreviation for the crop and the last two letters define the BBCH value.

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