The Agricultural Census is conducted in June each year by the government
departments dealing with Agriculture and Rural Affairs for Scotland,
England, and Wales (i.e. SEERAD, DEFRA and ARAD). Each farmer declares the
agricultural activity on the land via a postal questionnaire. The
respective government departments collect the 150 items of data and
publish information relating to farm holdings for recognised geographies.
Edinburgh University Data Library has developed algorithms which convert
the data for recognised geographies, obtained from the government
departments, into grid square estimates. The key to transforming the raw
data into grid square data is the definition of each geography
(e.g. parish, in the case of Scotland) in terms of 1km squares. This
Framework is used in conjunction with a 7-fold classification of the
land-use of the same 1km grid squares, the Landuse Framework.
Agricultural Census items are distributed over those 1km grid squares with
the land use category suitable for the census item in question.
The resultant grid square estimates of production are available in ASCII
delimited format at various resolutions from as far back as 1969 for the
three UK territories.