Input to Yield Ratio (IYR) maps for wheat farming in England, 2010-2017

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https://doi.org/10.5285/dfe2a4a5-2b3a-4731-ba7f-aea7e926f1dd

These maps show the Input to Yield Ratio (IYR) of wheat farming in England, calculated as the ratio of agrochemical inputs to agricultural reward as yield.

We assess the IYR at a 1km resolution for wheat grown in England over the period the period 2010-2017, considering the different agrochemicals used and their differing forms of environmental impact. We provide four mapped products: IYR for Nitrogen fertilisers, IYR for Phosphorus fertilisers, IYR for pesticide risk to earthworms, and IYR for pesticide risk to honeybees. The IYR is calculated using scaled rather than absolute values, with the maximum value in each yield and inputs dataset set as 1, so that all inputs and rewards are expressed proportionally to each other.

The research was funded under research programme NE/N018125/1 ASSIST and NE/W005050/1 AgZero+.

Publication date: 2023-11-11

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View numbers valid from 11 November 2023 Download numbers valid from 20 June 2024 (information prior to this was not collected)

Format

TIFF

Spatial information

Study area

Spatial representation type

Raster

Spatial reference system

OSGB 1936 / British National Grid

Temporal information

Temporal extent

2010-01-01 to 2010-12-31

Provenance & quality

We mapped estimated pesticide and fertiliser applications to 1km grid squares in England using data from the Fera Pesticide Utilisation Survey and the British Survey of Fertiliser Practice, respectively. Estimated pesticide applications were converted to risk values to honeybees and earthworms using information on toxicity from the Pesticide Property Database. Areas with winter wheat crop were identified from the UKCEH Land Cover® plus: Crops map. Data from the June Survey of Agricultural and Horticultural activity were used to create an average wheat yield map for England.

We then compared the fertiliser and pesticide application datasets separately to estimated yields of wheat in order to derive the Input to Yield Ratio (IYR) for four separate agrochemical inputs: Nitrogen fertilisers, Phosphorus fertilisers, pesticide exposure for earthworms, and pesticide exposure for honeybees.

Licensing and constraints

This dataset is available under the terms of the Open Government Licence

Cite this dataset as:

Fincham, W.N.W.; Risser, H.A.; Jarvis, S.G.; Schultz, C.; Spurgeon, D.J.; Redhead, J.W.; Storkey, J.; Pywell, R.F.; Bullock, J.M. (2023). Input to Yield Ratio (IYR) maps for wheat farming in England, 2010-2017. NERC EDS Environmental Information Data Centre. https://doi.org/10.5285/dfe2a4a5-2b3a-4731-ba7f-aea7e926f1dd

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