Subject	Agricultural Sciences: Agronomy and Crop Science, Soil Science
Specific subject area	Elemental composition of agrocenosis components - soils and plants - in a long-term field experiment
Data format	Raw data
Type of data	Table
Data collection	Data on elemental composition of soil and plant samples were obtained by inductively coupled plasma optical emission spectrometry (ICP-OES) using Agilent 5800 ICP-OES (Agilent Technologies, USA). Acid digestion of the samples was carried out beforehand. Data on soil pH-value were obtained potentiometrically for aqueous (H2O) and saline (KCl) suspension at a ratio of 1:2.5 using Sartorius PB-11 (Sartorius AG, Finland). Soil organic carbon content was determined by the Tyurin's method with photometric termination, using a UNICO-1201 spectrophotometer (UNICO, USA). The content of mobile phosphorus was also determined photometrically.
Data source location	Country: Russia Region: Vladimir region, Suzdal GPS coordinates of the experimental field: 56°25′02" N 40°25′25" E
Data accessibility	Repository name: Mendeley Data Data identification number: 10.17632/3cygrjjtf3.1 Direct URL to data: https://data.mendeley.com/datasets/3cygrjjtf3/1