# The Cereal Seeds Regulations 1993, Paragraph 5: Isolation distances


(a) There shall be a physical barrier or at least two metres of fallow or non-cereal crops between the crop and another cereal crop.
(b) For rye the minimum distance from neighbouring crops of other varieties of rye or crops of the same variety of rye of a lower category shall be:—
(a) Crops to produce Pre-basic Seed and Basic Seed … 300 metres
(b) Crops to produce Certified Seed … 250 metres
(c) For self-pollinating varieties of triticale the minimum distance from neighbouring crops or other varieties of triticale of a lower category shall be—
(i) Crops to produce Pre-Basic Seed and Basic seed … 50 metres
(ii) Crops to produce Certified Seed … 20 metres
With the approval of the Minister these distances may be modified if there is adequate protection against undesirable pollen.

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Source: https://www.legislation.gov.uk/uksi/1993/2005/schedule/4/paragraph/5 (the official version)
Page: https://openlegislation.uk/cereal-seeds-regulations-1993/schedule-4/paragraph-5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.