Contact for information?

Do you have a question when applying for Plant Breeders’ Rights or registration? Please contact us at or

Telephone number:

+31 (0)71 332 6121

You can also go to the contactpage (click here)


Board for Plant Varieties

Visiting address:

Sotaweg 22, 2371 GD Roelofarendsveen, The Netherlands


Postal address:

P.O. Box 14, 2370 AA Roelofarendsveen, The Netherlands


Bankaccount: IBAN: NL82RABO0300017057

Technical DUS test

Before a variety is granted for Plant Breeders' Rights or is listed on the National list, a technical DUS test is required. For Plant Breeders' Rights only DUS tests, for listing DUS tests and Value for Cultivation and Use (VCU). An administrative test is also carried out.
In the technical DUS test Naktuinbouw establishes if the new variety is clearly distinguishable from all other existing varieties within the specie concerned (Distinct), whether the variety remains uniform during propagation (Uniform) and whether the characteristics of the variety remain stable during repeated propagation (Stable). In field tests and greenhouse tests, Naktuinbouw investigates individual plants of the variety and of the comparison varieties. For Kentucky bluegrass, a pre-test can be applied for.


Send samples on time and correctly

It is important that a sample of a new variety is submitted in time - before the start of a new season. There is a closing date for each specie.
The sample must meet a number of demands, such as the nature of the material, the size of the sample and the health status. Seed must not have been treated, unless with express prior permission Seed may never be pelleted or primed, as these treatments can mask the characteristics of the seed and influence the germinating power, and therefore subsequent specie development.
If the identity sample is not submitted in time or fails to meet these demands, the Board for Plant Varieties will automatically withdraw the application. 
Attention: Other dates and demands apply for material submitted for VCU-tests. These are stated in the VCU specie protocols.


New characteristic - tell us at once

Naktuinbouw performs tests according to CPVO protocols (Community Plant Variety Office), UPOV-directives (International Union for the Protection of New Varieties of Plants) or National protocols.
Does the distinctness of a new variety depend on a characteristic that has not already been included in one of these protocols? Please state this with your application to avoid problems in the final stages of testing. Normally, being able to work with a new characteristic requires permission in a separate procedure.


During the test

Technical DUS testing usually takes two growing cycles. A growing cycle is the time the test takes to observe all the characteristics which are required for the DUS test. The final report usually follows after the second growing cycle. If there are still any aspects that are not clear, an extra growing cycle may be necessary.
After each growing cycle the applicant will receive an interim report stating the current status and the plans for the next growing cycle. Test fees will be charged for each growing cycle.


Finalisation of the DUS testing

If the variety to the DUS requirements, Naktuinbouw create a report, including the variety description.
This draft report goes to the applicant, with the request to agree to go. If necessary, changes can still be made in the report. Then Naktuinbouw offers the report, the decision to the Council of plant varieties.