DOI: 10.23637/rbk1-bfr-01
title: Dataset: Broadbalk Wheat brown foot rot (Fusarium spp.) 1992-2009

description: This dataset contains scores of Brown Foot Rot (BFR) caused by _Fusarium_ spp., from the Broadbalk wheat experiment, with associated grain yield at harvest, 1992-2009. BFR infection varied a lot from year to year, possibly due to variation in winter and spring temperature and rainfall. Infection was greatest in 3rd wheats and continuous wheat, and least in 1st wheats. Fertilizer application rates influenced infection, with the lowest rates in plots where one or more nutrients was missing (plots 10 and 11). The plots treated with the most nitrogen (plots 15 and 21) had the highest BFR scores, as also reported for Broadbalk by Glynne (1969) and in dilution plating studies by Bateman and Coskun (1995) and Snyder and Nash (1968). 

This dataset was assembled by Amisha Pradhan in summer 2021 as part of the Nuffield Research Placements Summer Studentship scheme.
description: The scores are percentages of straws infected with slight or severe BFR, on the day assessed. Plants were scored each summer (June or July), 1992-2009, from six contrasting plots (7, 10, 11, 13, 15 and 21) and four sections: 
- **Section 9:** continuous wheat each since 1843, except for occasional fallow years (no crop) to control weeds, the last in 1958
- **Sections 2-5 & 7:** the first, second and third wheat crops in a five year rotation with two other crops. See Table of Contents and Broadbalk plan and cropping 1968-2017 for details.
description: BFR slight and severe scores and grain yields from 1992-2009 from the following plots, from Section 9 (continuous winter wheat) and sections 2-5 & 7 (wheat in rotation):
- **Plot 7:** N2PKMg until 2000 / N2(P)KMg since 2001
- **Plot 10:** N2 until 2000 /N4 since 2001 
- **Plot 11:** N2P until 2000 / N4PMg since 2001
- **Plot 13:** N2PK until 2000 / N4PK since 2001
- **Plot 15:** N5PKMg until 2000 / N5(P)KMg since 2001
- **Plot 2.1:** 35t FYM since 1885 + N2 1968 until 2004 / FYM + N3 since 2005
See Broadbalk Wheat Experiment plan and cropping 1968-2017 for full details of fertilizer treatments.
description: Data is also available from earlier years, but not from all plots and sections, so this sub-set was selected as it contains 24 samples for each year (6 plots x 4 sections). Grain yield is at 85% dry matter, at harvest.
description: - Disease data is from the dataset BKDISEASE in the e-Radatabase. 
- Grain yield data is from the dataset BKYIELD_R85. 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. Once the data were entered into e-RA, they were independently back-checked against the original data sheets. None