Conditions of Use and How to Credit Datasets

1. Licensing and Conditions of Re-use
This dataset is available under a Creative Commons Attribution 4.0 Licence (CC BY 4.0). Where data is presented, either in original or derived form (e.g., graphics, tables, summary statistics), you must always include the required attribution statement:

Attribution statement: Contains data supplied by Rothamsted Research.

In addition, you must include the following acknowledgement:

Acknowledgement:
The Electronic Rothamsted Archive (e-RA), its datasets, information and other resources, are part of the Rothamsted Long-Term Experiments - National Bioscience Research Infrastructure (RLTE-NBRI), funded by the 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.

If you are uncertain how best to use the dataset or require clarification, you are strongly advised to contact the e-RA Data Curators.

2. Dataset Citation Requirements
All e-RA datasets are issued with a Citation and DataCite Digital Object Identifier (DOI). You must ensure the dataset is correctly cited and includes the dataset DOI, either where it appears or within the reference list:

Recommended Citation Example:
Glendining, M., Poulton, P. (2023). Dataset: Broadbalk Wheat annual grain and straw yields 1968-2022. Electronic Rothamsted Archive, Rothamsted Research, Harpenden, UK. DOI: https://doi.org/10.23637/rbk1-yld6822-01

e If using information from the e-RA website or database (even if transformed, e.g., into graphs or tables), you must also use the required attribution and acknowledgement statements listed above. Rothamsted’s Long-Term Experiment datasets are important scientific research outputs and must be properly cited in any publication or other output where they are used, in whole or in partUsing proper citation:

• - formally acknowledges the authors’ sources
• - makes it easier to locate source data
• - supports reproducible research
• - allows the impact of datasets to be tracked
• - recognises data creators and curators

3. General Reference for the e-RA Website (when no dataset is used)
If you are referring to the e-RA website or database in general, without using a specific dataset, please use the website address www.era.rothamsted.ac.uk and this reference to the paper about e-RA:

Perryman, S.A.M., Castells-Brooke, N.I.D., Glendining, M.J., Goulding, K.W.T., Hawkesford, M.J., Macdonald, A.J., Ostler, R.J., Poulton, P.R., Rawlings, C.J., Scott, T., and Verrier, P.J. (2018). “The electronic Rothamsted Archive (e-RA), an online resource for data from the Rothamsted long-term experiments”, Scientific Data, 5, 180072. DOI: https://doi.org/10.1038/sdata.2018.72

4. Publication, Support and Dataset Versions

• - If you publish using LTE data, please notify the e-RA Curators and send us a copy of the paper.
• - If you require significant scientific support to compile, understand, or analyse the dataset, co-authorship is requested.
• - Any reasonable changes you make to the dataset must be indicated, but not in a way that implies Rothamsted Research endorses your interpretation or use.
• - Rothamsted Research may publish corrected or updated dataset versions without notice; all datasets are version-controlled.
• - You must not intentionally misrepresent the dataset. If you have doubts about interpretation, please contact the e-RA Curators.