cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.23637/rex4-yld4075-01
title: Dataset: Exhaustion Land Experiment annual crop yields 1940-1975

description: This dataset contains annual spring barley yield data for all plots of the Exhaustion Land Experiment, 1949-1975, and agronomic details including sowing dates and varieties. No yields were recorded 1940-1948. Basal nitrogen fertilizer was applied to all plots 1940-1974; no other fertilizer or manure was applied. This phase of the experiment tests the residual effects of different fertilizers and manures applied 1856-1901.
description: The experiment was established in 1856 and divided into 10 plots (1-10) in 1876, each receiving a different fertilizer or manure treatment until 1901. No fertilizer or manure was applied 1902-1939. Spring barley was grown every year from 1949 except 1967 and 1975 (bare fallow). In 1957 and 1958 some plots were used for microplot experiments; this data is not included here.
description: Barley grain and straw yields at 85% dry matter, the straw yields do not include stubble. Ground chalk was applied as required to parts of some plots in 1954 and 1960 to ensure soil was around pH 7-8.
description: Individual plot yields were taken from Rothamsted Experimental Station Annual Reports and Yield Books. Agronomic information (sowing dates, variety, etc) taken from Annual Reports, Yield Books, plans and descriptions in the Rothamsted Library archives. The frictionless dataset of combined yields and treatment data was compiled by June Kimori and checked by Daniel Philcox and Margaret Glendining, July 2022. In accordance with the Joint Code of Practice for Research at Rothamsted, data processing in e-RA follow rigorous standard operating procedures to ensure the quality and correctness of data collected in the field through to depositing in the e-RA database. To ensure quality control during data inputting, the data sets were typed on two separate occasions (double data entry). During the second typing (verification) the data values were compared with those typed on the earlier occasion, and any discrepancies were resolved before verification continued. This procedure avoided visual checking of data, which can be very inaccurate.
DOI: 10.23637/rex4-yld0239-01
title: Dataset: Exhaustion Land Experiment annual crop yields 1902-1939

description: This dataset contains the annual yield data for Phase II of all plots of the Exhaustion Land Experiment 1902-1922 and 1935. No yields were recorded 1923-1939, except in 1935. Also sowing dates, varieties and hectolitre weights.
description: The experiment was established in 1856, and divided into 10 plots (1-10) in 1876, given various fertilizer and manure treatments each year until 1901. No fertilizer or manure was applied 1902-1939; this phase of the experiment tests the residual effects of the fertilizers and manures applied 1856-1901 (Phase I). Cereals, mainly spring barley, were grown every year, except 1905-1911 when continuous red clover was grown on some plots.
description: Crop yields were recorded each year 1902-1922 and 1935, except 1920 when the whole experiment was bare fallowed to control weeds. Cereal grain and straw yields are at 85% dry matter. Cereal straw yields do not include the stubble. Grain hectolitre weights (kg grain per 100 litres) are calculated from bushel weights, assuming 1 bushel = 36.369 litres. Plots 5-10 grew continuous red clover from 1905-1911, yield is total forage dry matter yield for two cuts (one cut only in 1909).
description: Annual yields were transcribed from original data sheets held in the Rothamsted paper archive and from the Yields of the Field Experiments and Rothamsted Annual Reports. Details of treatments were taken from the Rothamsted Annual Reports and other publications. The frictionless dataset of combined yields and treatment data was compiled by June Kimori and checked by Daniel Philcox and Margaret Glendining, July 2022. In accordance with the Joint Code of Practice for Research at Rothamsted, data processing in e-RA follow rigorous standard operating procedures to ensure the quality and correctness of data collected in the field through to depositing in the e-RA database. To ensure quality control during data inputting, the data sets were typed on two separate occasions (double data entry). During the second typing (verification) the data values were compared with those typed on the earlier occasion, and any discrepancies were resolved before verification continued. This procedure avoided visual checking of data, which can be very inaccurate.
DOI: 10.23637/keyrefoahbsoc
title: Dataset: Hoosfield soil organic carbon content

description: This dataset shows changes in soil organic carbon (SOC) content (tha<sup>-1</sup>) in the topsoil (0-23cm) of selected treatments of the Hoosfield experiment, where spring barley has been grown each year since 1852. SOC has remained almost constant in the unfertilized plot since the 1880s, at the equilibrium level for this farming system on this soil type. Annual applications of 35 t ha<sup>-1</sup> FYM increased SOC rapidly at first, then more slowly. This treatment now contains around three times as much SOC as the unfertilized plot. The third treatment, given FYM for just 20 years between 1852 and 1871, still contains over 40% more SOC than the unfertilized plot.
description: Data has been calculated from measured % SOC (0-23 cm) and standard soil weights, adjusted for observed decreases in top soil bulk density of plots given FYM, by including the appropriate amount of subsoil to ensure soil weights were comparable over time. The initial starting SOC in 1852 has been estimated. Spring barley has been grown every year, except 1912, 1933, 1943 and 1967 when the whole experiment was fallowed to control weeds.
description: The dataset shows SOC (tha<sup>-1</sup> 0-23cm) between 1852 and 1998 from the following plots:
- **Unfertilized:** No fertilizer or organic manure since 1852, plot 11
- **FYM:** 35 t ha<sup>-1</sup> FYM each year since 1852, plot 72.
- ** FYM 1852-1871:** 35 t ha<sup>-1</sup> FYM each year 1852-1871 only, plot 71.
description: %SOC expressed as oven-dried soil (100% dry matter), converted from air-dried to oven-dried by multipying by 1.02. All data before 1975 were from stored soil samples re-analysed in 1975. %SOC from 1882-1975 was measured as total C (determined by dry combustion) minus CaCO<sub>3</sub>-C. Data for 1982 are % organic C measured by the method of Tinsley. Data for 1998 are are total C by combustion (LECO) minus CaCO<sub>3</sub>-C by manometry.
description: This dataset is derived from measurements made by the Analytical Chemistry Unit, Rothamsted Research, Harpenden. The data presented is mean data from selected plots only. The complete data set is available from the e-RA curators. 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. None
DOI: 10.23637/wxb6-yield2742-01
title: Dataset: Woburn Continuous Barley Experiment yields 1927-1942

description: Annual spring barley grain and straw yields for all plots and sub-plots of the Woburn Continuous Barley Experiment, 1927-1942, with treatment details. Also grain hectolitre weights, a measure of grain quality. This experiment is a companion to the Woburn Continuous Wheat experiment.
description: The Woburn Continuous Barley Experiment was started in 1877, with a range of fertilizer and manure treatments applied until 1926. No fertilizer was applied 1927-1940 (except to some plots in 1931 and 1932), and during this period the experiment was used to look at the residual effects of fertilizer applied from 1877-1926. In 1941 and 1942, basal N fertilizer was applied at the same rate to all plots. The plots were divided in half in 1931 and 1932 to test two spring barley cultivars. The whole experiment was fallowed to control weeds (no crop sown) in 1927, 1928, 1934 and 1935.
description: Harvested barley grain and straw yields at 85% dry matter. Fallow (no crop) yields shown as blank cell. If a crop was sown but it failed, yield shown as 0.0. Straw yield does not include the stubble or all the chaff. Hectolitre weight, kg of grain per 100 litres, calculated from bushel weight, assuming 1 bushel is 36.369 litres.
description: Individual plot yields were taken from Rothamsted Experimental Station Annual Reports, 1927-1938 and Yield Books 1939-1942. Agronomic information (sow dates, cultivar, etc) taken from Annual Reports, Yield Books, plans and descriptions in the Rothamsted Library archives. The frictionless dataset of combined yields and treatment data was compiled by Daniel Philcox and checked by June Kimori and Margaret Glendining, July 2022. In accordance with the Joint Code of Practice for Research at Rothamsted, data processing in e-RA follow rigorous standard operating procedures to ensure the quality and correctness of data collected in the field through to depositing in the e-RA database. To ensure quality control during data inputting, the data sets were typed on two separate occasions (double data entry). During the second typing (verification) the data values were compared with those typed on the earlier occasion, and any discrepancies were resolved before verification continued. This procedure avoided visual checking of data, which can be very inaccurate. None
DOI: 10.23637/wxb6-yield7726-01
title: Dataset: Woburn Continuous Barley Experiment yields 1877-1926

description: This dataset contains the annual grain and straw yields of the Woburn Continuous Barley experiment, 1877-1926. Also grain %N for most plots and years. Details of the fertilizer, manure and lime treatments are also included. There was a parallel experiment at Woburn testing the same treatments on the yield of continuous winter wheat. This experiment also mirrored the continuous spring barley experiment on the silty clay loam soil at Hoosfield, Rothamsted, started in 1852. The soil at Woburn contained little free calcium carbonate, and soil pH was 6.1 in 1876. Consequently, where ammonium sulphate was applied (plots 2, 5 and 8) the soil soon became acidic and yields declined markedly within 20 years. These were the first experiments in the UK where lime was applied to try to correct soil acidity.
description: This experiment tested different fertilizer, manure and lime treatments on the yield of continuous spring barley grown on a sandy loam soil at Woburn. Originally 11 plots (1-11), some were divided into sub-plots (a and b) from 1882, and into sub sub-plots (i and ii) from 1905, to test different treatments, mainly with and without lime. To allow comparison of the different treatments, yields are shown for all 50 years for each sub-plot.
description: Grain and straw yields at field moisture content, approximately 85%, though this was not recorded. Grain % N content measured in grain dried at 100 degrees C, assumed to be 100% dry matter. Grain %N not recorded for all plots. Harvest dates not recorded.
description: Individual plot yields are taken from Russell and Voelcker (1936) appendix tables. The treatment details were taken from [Glendining 2022](https://doi.org/10.23637/wxb6-treats-01). This frictionless dataset of combined yield and treatment data was compiled by M Glendining and checked by S Perryman, May 2022. In accordance with the Joint Code of Practice for Research at Rothamsted, data processing in e-RA follow rigorous standard operating procedures to ensure the quality and correctness of data collected in the field through to depositing in the e-RA database. To ensure quality control during data inputting, the data sets were typed on two separate occasions (double data entry). During the second typing (verification) the data values were compared with those typed on the earlier occasion, and any discrepancies were resolved before verification continued. This procedure also set out how to handle situations where the written records were illegible or ambiguous. This procedure avoided visual checking of data, which can be very inaccurate. Yield data taken from Russell E. J. and Voelcker J.A. (1936) *Fifty years of field experiments at the Woburn Experimental Station*. Rothamsted Monographs on Agricultural Science, Longmans, Green and Co., London. Appendix tables.
DOI: 10.23637/wxw6-yield4366-01
title: Dataset: Woburn Continuous Wheat Experiment yields 1943-1966

description: Annual grain and straw yields for all plots and sub-plots on the Woburn Continuous Wheat Experiment, 1943-1966, with details of N fertilizer applied, and other agronomic information, including sowing date, plot size and cultivars. Winter wheat was grown every year until 1961 (apart from fallow years), then oats (1962) and spring beans (1964). The whole experiment was fallowed (no crop sown) to control weeds in 1947, 1948, 1955-57, 1963, 1965 and 1966. The experiment is a companion to the Woburn Continuous Barley Experiment.
description: The Woburn Continuous Wheat Experiment started in autumn 1876 with a range of fertilizer and manure treatments applied until 1926. No fertilizer was applied 1927-1940. From 1943-1954 the plots were divided into sets of three and three N rates were applied to each set, in cyclic order. Plots 2, 5 and 8 were fallowed and not included in the fertilizer N treatments, as they were so acidic (due to the fertilizer treatments in 1877-1926). Lime was applied in 1955 to all plots to bring soil to about pH 6.0. Further lime was applied to selected areas 1956-1959. In autumn 1962 the whole area was limed to bring pH to about 7. In 1959-1961 the plots were divided to compare barley and wheat. Microplot experiments were made on some plots in 1960-64; this data is not included. Basal fertilizer N was applied to all plots in 1959-1961 (barley and wheat) and in 1962 (oats).
description: Grain and straw yield at 85% dry matter. Straw yield does not include the stubble or all of the chaff. Fallow (no crop) yields shown as a blank cell. The plots were divided into sets of three according to their fertilizer treatment in 1877-1926 for the N fertilizer treatments, 1943-1955:
- **No P or K** Plots 1, 3, 7 
- **PK** Plots 4, 6, 9 
- ** FYM** Plot 11b (divided into three sections, 1, 2 and 3)
- ** Various treatments** Plots 10a, 10b and 11a
- **Plots 2, 5 and 8** were not included in this scheme and no yields were taken until 1959.
description: Individual plot yields were taken from Rothamsted Experimental Station Yield Books, 1943-1966. Agronomic information (sowing dates, cultivar, etc) taken from Annual Reports, Yield Books, plans and descriptions in the Rothamsted Library archives. The frictionless dataset of combined yields and treatment data was compiled by Daniel Philcox and checked by June Kimori and Margaret Glendining, July 2022. In accordance with the Joint Code of Practice for Research at Rothamsted, data processing in e-RA follow rigorous standard operating procedures to ensure the quality and correctness of data collected in the field through to depositing in the e-RA database. To ensure quality control during data inputting, the data sets were typed on two separate occasions (double data entry). During the second typing (verification) the data values were compared with those typed on the earlier occasion, and any discrepancies were resolved before verification continued. This procedure avoided visual checking of data, which can be very inaccurate. None
DOI: 10.23637/wxw6-yield2742-01
title: Dataset: Woburn Continuous Wheat Experiment yields 1927-1942

description: Annual wheat grain and straw yields for all plots and sub-plots of the Woburn Continuous Wheat Experiment, 1927-1942, with treatment details. Also grain hectolitre weights, a measure of grain quality. This experiment is a companion to the Woburn Continuous Barley Experiment.
description: The Woburn Continuous Wheat Experiment started in autumn 1876, with a range of fertilizer and manure treatments applied until 1926. No fertilizer was applied 1927-1940, and during this period the experiment was used to look at the residual effects of fertilizer applied from 1876-1926. In 1941 and 1942, basal N fertilizer was applied at the same rate to all plots. The whole experiment was fallowed (no crop sown) to control weeds in 1927, 1928, 1934 and 1935.
description: Harvested wheat grain and straw yields at 85% dry matter. Fallow (no crop) yields shown as blank cell. If a crop was sown but it failed, yield shown as 0.0. Straw yield does not include the stubble or all the chaff. Hectolitre weight, kg of grain per 100 litres, calculated from bushel weights, assuming 1 bushel is 36.369 litres. Winter wheat sown every year, except fallow years (no crop) and 1930, when the original winter wheat crop was so badly damaged by birds it had to be re-sown with spring wheat.
description: Individual plot yields were taken from Rothamsted Experimental Station Annual Reports, 1927-1938 and Yield Books 1939-1942. Agronomic information (sow dates, cultivar, etc) taken from Annual Reports, Yield Books, plans and descriptions in the Rothamsted Library archives. The frictionless dataset of combined yields and treatment data was compiled by Daniel Philcox and checked by June Kimori and Margaret Glendining, July 2022. In accordance with the Joint Code of Practice for Research at Rothamsted, data processing in e-RA follow rigorous standard operating procedures to ensure the quality and correctness of data collected in the field through to depositing in the e-RA database. To ensure quality control during data inputting, the data sets were typed on two separate occasions (double data entry). During the second typing (verification) the data values were compared with those typed on the earlier occasion, and any discrepancies were resolved before verification continued. This procedure avoided visual checking of data, which can be very inaccurate. None
DOI: 10.23637/wxw6-yield7726-01
title: Dataset: Woburn Continuous Wheat Experiment yields 1877-1926

description: This dataset contains the annual grain and straw yields of the Woburn Continuous Wheat experiment, 1877-1926. Also grain %N for some plots and years. Details of the fertilizer, manure and lime treatments are also included. There was a parallel experiment at Woburn testing the same treatments on the yield of continuous spring barley. This experiment also mirrored the continuous winter wheat experiment on the silty clay loam soil at Broadbalk, Rothamsted, started in 1843. The soil at Woburn contained little free calcium carbonate, and soil pH was 6.1 in 1876. Consequently, where ammonium sulphate was applied (plots 2, 5 and 8) the soil soon became acidic and yields declined markedly within 20 years. These were the first experiments in the UK where lime was applied to try to correct soil acidity.
description: This experiment tested different fertilizer, manure and lime treatments on the yield of continuous winter wheat grown on a sandy loam soil at Woburn. Originally 11 plots (1-11), some were divided into sub-plots (a and b) from 1882, and into sub sub-plots (i and ii) from 1905, to test different treatments, mainly with and without lime. To allow comparison of the different treatments, yields are shown for all 50 years for each sub-plot.
description: Grain and straw yields at field moisture content, approximately 85%, though this was not recorded. Grain % N content measured in grain dried at 100 degrees C, assumed to be 100% dry matter. Grain %N not recorded for all plots. Harvest date not recorded.
description: Individual plot yields are taken from Russell and Voelcker (1936) appendix tables. The treatment details were taken from [Glendining 2022](https://doi.org/10.23637/wxw6-treats-01). This frictionless dataset of combined yield and treatment data was compiled by M Glendining and checked by S Perryman, May 2022. In accordance with the Joint Code of Practice for Research at Rothamsted, data processing in e-RA follow rigorous standard operating procedures to ensure the quality and correctness of data collected in the field through to depositing in the e-RA database. To ensure quality control during data inputting, the data sets were typed on two separate occasions (double data entry). During the second typing (verification) the data values were compared with those typed on the earlier occasion, and any discrepancies were resolved before verification continued. This procedure also set out how to handle situations where the written records were illegible or ambiguous. This procedure avoided visual checking of data, which can be very inaccurate. Yield data taken from Russell E. J. and Voelcker J.A. (1936) *Fifty years of field experiments at the Woburn Experimental Station*. Rothamsted Monographs on Agricultural Science, Longmans, Green and Co., London, Appendix tables.
DOI: 10.23637/wrn3-wheat7618-01
title: Dataset: Woburn Ley-arable experiment: yields of wheat as first test crop, 1976-2018

description: Annual grain yield for the winter wheat test crop, on the Woburn Ley-Arable experiment, 1976-2018, with treatment details.
description: The Woburn Ley-arable experiment was started in 1938, to compare the effects of different rotations, with and without grass or grass/clover leys, on soil organic matter and the yield of two arable test crops. 'Test crop' refers to a major cash crop on which the effects of the different arable rotations and leys were assessed. The rotations are typically three years of 'treatment crops' followed by two years of 'test crops' (the exception are the eight-year ley treatments). The two test crops have changed throughout the experiment, and the first test crop has been wheat since 1976. This dataset contains the yield of wheat grown as the first test crop, 1976-2018, plus details of the N fertilizer treatments, basal fertilizer, sowing and harvest dates.
description: An Excel file, 01-WRN3-WH7618.xlsx contains the Woburn Ley-arable winter wheat test crop yields for 1976-2018, plus details of the fertilizer treatments applied. Frictionless CSV files are also provided for users who prefer the CSV format.
description: Wheat grain yield at harvest at 85% dry matter content. Winter wheat was grown every year, except for 2015, when the spring wheat variety Mulika was sown, as the winter wheat crop failed.
description: None In accordance with the Joint Code of Practice for Research at Rothamsted, data processing in e-RA follow rigorous standard operating procedures to ensure the quality and correctness of data collected in the field through to depositing in the e-RA database. Once the data were entered into e-RA, they were independently back-checked against the original data sheets. None