Dataset: Rothamsted long-term liming experiment exchangeable cations re-analysed
- DOI: 10.23637/rcs10-rltlcation-01
- Experiment: Rothamsted Long Term Liming
- Files included in the download:
- Exchangeable cation data (xlsx)
- Exchangeable cation data as frictionless data package, csv format (zip)
- Version: 1.0
- Created: 2023-03-01
- Keywords: long term experiments - arable soils - soil fertility - phosphorous - liming
- Author(s): Cathy Thomas, Jonathan Holland, Margaret Glendining, Stephan Haefele
- Publisher: Electronic Rothamsted Archive, Rothamsted Research, Harpenden, UK
Summary
The experiment tests the effects of different amounts of lime (and thus soil pH), P and K on a sequence of arable crops, on a silty clay loam soil at Rothamsted Experimental Farm, Harpenden, from 1962-1996. Archived topsoil samples from six years between 1964 and 1989 were re-analysed in 2019 for a range of soil exchangeable cations, by extraction with ammonium nitrate (NH4NO3). There was a parallel experiment at Woburn Experimental Farm.
Methods
Period 1 (1962-1980): four lime levels with and without fertilizer P and K. Period 2 (1981-1996): four lime levels with four P levels. 2 replicates (blocks).
- Topsoil (0-18 or 0-23cm) sampled in 1964, 1967, 1974, 1979, 1983 and 1989
- 12-20 soil cores taken from the central area of each plot and combined to make one sample
- Soil samples taken in autumn, after harvest and before ploughing for the next crop
- Archived air-dried sieved (<2mm) soils re-analysed in 2019.
- Exchangeable cations Al, Ca, Cu, Fe, K, Mg, Mn, Na and Zn, mg/kg dry soil
- Measured by extraction with 1 M ammonium nitrate (NH4NO3).
- Cations detected by ICP-OES (Inductively Coupled Plasma - Optical Emission Spectrometer).
- Negative values shown as zero.
Technical Information
Detection limits (DL) of the ICP-OES. These values provide an indication of the lower values for detection by the ICP-OES. DL (mg/kg dry soil) is calculated as 3x standard deviation of blanks.
| Al | Ca | Cu | Fe | K | Mg | Mn | Na | Zn | |
|---|---|---|---|---|---|---|---|---|---|
| DL | 0.33 | 1.43 | 0.02 | 0.23 | 3.18 | 0.21 | 0.06 | 0.76 | 0.02 |
Related Documents
- Bolton, 1971. Paper describing setting up the experiment and results from the early years :
- Bolton, 1977a. Paper describing liming response of potatoes and oats to P, K and Mg :
- Bolton, 1977b. Paper describing changes in soil pH and exchangeable calcium over first 12 years :
- Holland et al, 2019. Paper describing yield response of all crops grown, 1962-1996 :
- Goulding et al, 1989. Paper prediting lime requirement of soils, using long-term liming data :
- Rothamsted long-term liming experiment plans 1962-1996 :
- Rothamsted long-term liming experiments lime and fertilizer treatments 1962-1996 :
- Jordan-Meille et al, 2021. Paper describing grain mineral composition :
Related Datasets
- Rothamsted long-term liming experiment crop yield 1962-1996
- Rothamsted long-term liming experiment grain mineral composition
- Woburn long-term liming experiment exchangeable cations re-analysed
- Rothamsted long-term liming experiment soil chemical properties 1962-1996
Contributors
- Margaret Glendining: Data curator
- Nathalie Castells: Data manager
- Jonathan Holland: Researcher
- Cathy Thomas: Researcher
- Stephan Haefele: Project leader
- Mark Durenkamp: Data collector
Dataset Access and Conditions
Rights Holder
Rothamsted Research
License
This dataset is
available under a Creative Commons
Attribution Licence (4.0).
Cite this Dataset
YOU MUST CITE AS: Cathy Thomas, Jonathan Holland, Margaret Glendining, Stephan Haefele (2023). Dataset: Rothamsted long-term liming experiment exchangeable cations re-analysed Electronic Rothamsted Archive, Rothamsted Research, Harpenden, UK https://doi.org/10.23637/rcs10-rltlcation-01
Please review our How to Credit Datasets guidance for more information.
Conditions of Use
Rothamsted relies on the integrity of users to ensure that datasets are used appropriately and Rothamsted Research receives suitable acknowledgment as being the originators of these data. Please review the Conditions of Use before downloading.
Table Of Contents
Note the included Excel file: 01-RLTLCATION.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.
Contents
| File | Dataset Name | Description |
|---|---|---|
| soil_data.csv | Soil data | The main data table containing soil exchangeable cation data for archived soil sampled in 1964, 1967, 1974, 1979, 1983 and 1989, re-analysed in 2019. Topsoil was analysed from all plots and sub-plots (where present), except sub-plots given Mg in 1974-1978. Exchangeable cation extraction by ammonium-nitrate method. Cations were detected by ICP-OES. Any negative values were converted to zero. |
| liming_factor_data.csv | Liming treatment factor level descriptions | Describes the different liming treatment factor levels used, 1962-1996. |
| p_factor_data.csv | P treatment factor level descriptions | Describes the different P treatment factor levels used, 1962-1996. |
| k_factor_data.csv | K treatment factor level descriptions | Describes the different K treatment factor levels used, 1962-1980. From 1981 basal K was applied to all plots. |
| detection_limit_data.csv | Detection limit data | Describes the limits of detection of the ICP-OES for each cation. |
| notes_data.csv | Notes | Additional explanatory notes for records in the soil_data table |
The original archived soil samples were stored in the Rothamsted Sample Archive. The chemical analysis was carried out in the Analytical Unit of Rothamsted Research in 2019.
The Analytical Chemistry Unit follows the Joint Code of Practice (JCoPR) and participates in European Quality Assurance programmes. All performance is strictly monitored using certified external standards alongside in-house standard materials. Standards and check samples are monitored and recorded.
This experiment was under grass from 1997-2019 and no treatments were applied. In April 2019 the experiment was revived, and is currently being used to investigate the effect of different lime, P and Zn treatments on macro and micro nutrient uptake of wheat varieties. For more details contact Dr SM Haefele.
- The dataset Rothamsted long-term liming experiment exchangeable cations re-analysed is a published dataset from the e-RA Database. e-RA is part of the Rothamsted Long-Term Experiments - National Bioscience Research Infrastructure (RLTE-NBRI), which also covers maintenance of the Long-Term Experiments, the Rothamsted Sample Archive and Rothamsted's environmental monitoring activities including the weather stations and its role in the UK Environmental Change Network
- The RLTE-NBRI is funded by UK Research and Innovation - Biotechnology and Biological Sciences Research Council (UKRI-BBSRC) under award BBS/E/RH/23NB0007 (2023-2028). The RLTE-NBRI is also supported by the Lawes Agricultural Trust. e-RA has been part of a National Capability since 2012, previous awards from the BBSRC were Grants BBS/E/C/00005189 (2012-2017) and BBS/E/C/000J0300 (2017-2022)
Additional Funding sources
This project received specific funding from the following sources
- S2N - Soil to Nutrition Institute Strategic Programme (2017-2022) BBS/E/C/000I0310 - BBS/E/C/000I0310 (WP1) from Biotechnology and Biological Sciences Research Council
For further information and assistance, please contact the e-RA curators, Sarah Perryman and Margaret Glendining using the e-RA email address: era@rothamsted.ac.uk