of ornamental presentation and health
progress has resulted in the development of new rose varieties with
extraordinary characteristics and diverse
uses for landscaping and private gardening. With so many different types
of roses, by 1950 rose breeders had already realized the necessity of
testing and assessing new varieties to evaluate their performance and to
strengthen the awareness of varieties. For these reasons ADR testing was
established by Wilhelm Kordes 50 years ago.
the ADR working group consists of the Bund deutscher Baumschulen (German
nurseries association), BdB, rose breeders and independent trial gardens.
On the basis of statistical analyses of the ADR trial results by the
Bundessortenamt (Federal Office of Plant Varieties), the results are
discussed at a yearly meeting.
objectives have changed over the years. New colours, flower and growth
types for various purposes have been developed. Correspondingly the
guidelines for ADR testing have been changed too. At present new varieties
are tested at eleven trial sites over several years by assessing
characteristics such as winter hardiness, number of flowers,
attractiveness and scent of the flower and growth type.
to pests and diseases
main characteristics for this evaluation however are resistance to pests
and diseases. The ADR varieties grown at the trial sites are cultivated with out any chemical pesticides to evaluate
their natural beauty and strength. Winners of the ADR award are varieties
above a certain standard of quality.
varieties have been evaluated in ADR trials so far. About 40 varieties of
different rose types are tested each year. Up to 2000 the ADR quality
certificate has been awarded to 121 varieties. However, this certificate
can be withdrawn by the ADR jury, if a variety no longer fulfils the ADR
quality standard. ADR activities are an essential contribution for
ecologically friendly cultivation and use of roses in private and public
parks and gardens, as nurseries and consumers are provided with
wellfounded information to evaluate the numerous variety of roses.
Burkhard Spellerberg,ADR-Co.ordinator, Bundessortenamt,
Osterfelddamm 80, 30627 Hannover,
Tel: 00495138/608640, Fax: 00495138/608670, email: Burkhard.Spellerberg@bundessortenamt.de