Dataset: Woburn long-term liming experiment grain mineral composition


The experiment tests the effects of four different amounts of lime (creating a soil pH range for approximately 4.5 to 7.5) with and without fertilizer P, on the grain mineral compostion of three arable crops. The site is a sandy loam soil at Woburn Experimental Farm, from 1962-1996. There was a parallel experiment on a silty clay loam soil at Rothamsted Experimental Farm. The dataset contains grain mineral compostion for 20 different minerals (mg/kg dry soil), for individual plots, measured in 1978, 1981 and 1995. It includes details of the lime and fertilizer treatments, and crop yield.


Grain mineral composition was determined, in 2019 and 2020, on archived ground samples grown in 1978 (barley), 1981 (oats) and 1995 (wheat). Macro-nutrients (Ca, K, Mg, Na, P, S) and Al, Fe and Ti were determined by open tube digestion with HNO3/HClO4 and measured with ICP-OES. Micro-nutrients and trace elements (As, Cd, Co, Cr, Cu, Mn, Mo, Ni, Pb, Se, and Zn) were determined with microwave digestion with HNO3/H2O2, then measured with ICP-MS.

Related Documents

Related Datasets


  • Lionel Jordan_Meille: Researcher
  • Margaret Glendining: Data curator
  • Nathalie Castells-Brooke: Data manager
  • Cathy Thomas: Researcher
  • Jonathan Holland: Researcher
  • Steve McGrath: Project manager
  • Stephan Haefele: Project manager
  • Richard Ostler: Project manager
  • Sarah Perryman: Data curator
  • Mark Durenkamp: Data collector
  • Chloe Garwood: Data collector
  • Ruth Skilton: Data collector

Dataset Access and Conditions

Rights Holder

Rothamsted Research


Creative Commons License This dataset is available under a Creative Commons Attribution Licence (4.0).

Cite this Dataset

YOU MUST CITE AS: Lionel Jordan_Meille, Jonathan Holland, Steve McGrath, Margaret Glendining, Cathy Thomas, Stephan Haefele (2021). Dataset: Woburn long-term liming experiment grain mineral composition Electronic Rothamsted Archive, Rothamsted Research

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Table Of Contents


Note the included Excel file: 01-WobLTliming-grain.xlsx contains the same data as the below CSV files. The Excel file contains each of the below CSV files as an Excel worksheet and is provided for users who prefer Excel over CSV.


File Dataset Name Description
README.html Readme File describing and explaining all details of the dataset (html)
README.txt Readme File describing and explaining all details of the dataset (txt)
grain_data.csv Grain mineral data The main data table containing grain mineral concentrations in barley, oats and wheat, 1978, 1981 and 1995. Includes treatments and crop yields.
crop_types_data.csv Crop types List of crops grown with Latin names and AGROVOC concepts.
liming_factor_data.csv Liming treatment factor level descriptions Describes the different liming treatment factor levels used, showing the total amounts applied over the experiment.
p_factor_data.csv P treatment factor level descriptions Describes the different P treatment factor levels used: Period 1 (1962-1980) when two P rates (0 and P) were applied annually; Period 2 (1981-1996) when four P treatments (P0, P1, P2 and P3) were applied three or four times only.
k_factor_data.csv K treatment factor level descriptions Describes the different K treatment factor levels used, 1962-1978
mn_factor_data.csv Mn treatment factor level descriptions Describes the different Mn treatment factor levels used, 1987-1990
notes_data.csv Notes Additional explanatory notes for records in the crop_data table

The original archived grain samples were stored in the Rothamsted Sample Archive. The chemical analysis was carried out in the Analytical Unit of Rothamsted Research in 2019 and 2020.

For further information and assistance, please contact the e-RA curators, Sarah Perryman and Margaret Glendining using the e-RA email address: