Comparability
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Food Industries, Business StatisticsMartin Lundø
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Similar statistics are produced among EU members and are available from the Eurostat's website. The statistics comply with EU standards.
Harvest figures are in principle comparable back to 1900 but with methodological changes along the way. The current calculation method has in principle been used since 1971. The statistics for the new regions of the country are made from 2006. Thus there for 2006 is both a statement of the then counties, and the current regions.
Comparability - geographical
Similar statistics are produced among EU members and are available from the Eurostat's website. The statistics comply with EU standards.
Comparability over time
The final figures on crop yields are, in principle, comparable as far back as 1900. Changes in methodology must be taken into account, but the present compilation method has been used since 1971. The results on crop yields at regional level are only comparable as from 2006 due to a new administrative structure of regions in Denmark. For 2006, results are compiled on the basis of the former counties as well as the present regions. Figures on coarse fodder are fully comparable as from 1982 and onwards. The change in methodology, which applied for the 2001 survey to the 2002 survey (taking specific account of organic production) as well as the change in the basis of areas (from 2005) may, to a minor extent, have an impact on the data comparability.
Until 2021, the statistics have converted the total harvest yield by weight into 'feed units'. Conversion factors from kernel yield (kg) to feed units (FE): Winter wheat: 1.0241; Spring wheat: 1.0241; Rye: 1.0000; Triticale: 1.0000; Winter barley: 0.9551; Spring barley: 0.9551; Oats: 0.7944; Mixed seed: 0.7944; non-food: 1.7037; Field peas: 1.0897.
Coherence - cross domain
Similar statistics are produced among EU members and are available from the Eurostat's website. The statistics comply with EU standards.
The forecast for areas with winter seeds can be compared with the later results according to the Agricultural and Horticultural Survey.
Coherence - internal
Data is internally consistent, deriving from the same source.