5.
Council Directive 2007/33/EC of 11 June 2007 on the control of potato cyst nematodes and repealing Directive 69/465/EEC · European Union
The potato variety ‘Désirée’ shall be used as a standard susceptible control variety in every test. Additional fully susceptible control varieties of local relevance may be added as internal checks. The standard susceptible control variety may be changed if research indicates that other varieties are either more suitable or more accessible.
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Source: EUR-Lex (Cellar) · retrieved 2026-11-08 · Text as adopted (Official Journal); later amendments are not incorporated in this text.