10.20387/BONARES-ZDW4-083T
Rothardt, Steffen
Steffen
Rothardt
CAU Kiel
V140 Kiel: Soil mineral Nitrogen and soil water contents 2015-2018
BonaRes Data Centre (Leibniz Centre for Agricultural Landscape Research (ZALF))
2021
Table
Nicolas Brüggemann
FZ Jülich
Henning Kage
CAU Kiel
2022-02-13
2020-02-13
2020-02-13
https://maps.bonares.de/mapapps/resources/apps/bonares/index.html?lang=en&mid=7c2e1459-ec80-430b-9f1c-3dfdfc8fa253
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
text/comma-separated-values
File-Geodatabase (gdb)
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Nitrate surplus after harvest of winter oilseed rape and faba beans is a serious issue regarding groundwater pollution and GHG emission. Stimulation of microbial N immobilization by organic amendments might be an option to prevent N-losses and optimize N use efficiency on crop rotation level. In this trial two crop rotations were established in a split plot design. The soil microbial activity is manipulated in field scale by post-harvest application of different organic amendments: preceding crop residues, winter wheat straw and spruce sawdust.
This file provides soil mineral Nitrogen and soil water contents from trial V140 on experimental farm Hohenschulen, Achterwehr, Germany, from 2015-07-23 (harvest winter barley) till 2018-08-02 (harvest faba beans) The trial is conducted by Uni Kiel, Institute of Crop Science and Plant Breeding, Agronomy and Crop Science. Geographical reference for the trial plots can be found in V140_plot_coordinates.shp (join by 'Plot_ID'). UKiel_V140_Plot_Description_2015_2018_BonaResDataCenter.csv offers detailed information about the experimental setup and the treatment of the individual plots.
Soil samples were taken with probes (2 cm inner diameters) from 0 - 90 cm. Divided into 3 30 cm layers three cores per plot were pooled, homogenized and frozen (-18°C) till lab processing. SMN (sum of NH4+ -N and NO3- -N contents) was determined with a spectrophotometer after extraction with 125 mM CaCl2 solution. A subsample of each soil sample was used for determination of the gravimetric water content (based on drying at 105°C). A uniform bulk density of 1.45 g cm-3 for all plots and dates was assumed.
5.81
15.77
47.26
54.76
Federal Ministry of Education and Research
031B0508G
BonaRes, INPLAMINT