# Council Directive 93/85/EEC of 4 October 1993 on the control of potato ring rot, Division: Note:

Extent: E+W+S+N.I.

For detection of latent C. m. subsp. sepedonicus populations it is advised to test composite samples. The procedure can be conveniently applied for composite samples of up to 200 stem parts. (Where surveys are performed they should be based on a statistically representative sample of the plant population under investigation.)

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Source: https://www.legislation.gov.uk/eudr/1993/85/annex/I/division/3/division/3.2/annotation/1 (the official version)
Page: https://openlegislation.uk/eu-directive-1993-85/annex-I/division-3/division-3.2/annotation/1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.