Naktuinbouw runs DUS tests of vegetable varieties for applications for listing and/or Plant Breeders' Rights in two independent growing cycles.
In many cases, we can perform two growing cycles in one calendar year, for example by using an extra sowing date. This considerably speeds up the DUS test but cannot be done with all vegetable crops.
About this test
The Naktuinbouw standard procedure is to perform DUS tests in two indepent growing cycles in successive calendar years. On request of the applicant, we can perform both tests in one year.
If your application or the circumstances make this impossible, we will inform you. For example, it might not be possible to change the sowing date, or the test may require too many similar varieties.
For certain crops Naktuinbouw asks UKZUZ (Czech Republic) or UKSUP (Slovak Republic) to perform the second test in the first year. You can visit the trial sites in Roelofarendsveen and the Czech Republic.
Please find below an overview of the crops. If your specific crop is not mentioned, Naktuinbouw will consider your request individually.
Location second test
Greenhouse crops (except determinate tomato, melon and watermelon)
Radish - in the open
Lettuce - in the open
Welsh or Japanese bunching onion
White, red, savoy cabbage
Sucker- and popcorn maize
If you request for two DUS tests in one year, we will charge the (Dutch) testing fee at the start of each trial. The test fees are listed in the list of fees.
You can request two tests in one year by indicating this on the application form.
If UKZUZ or UKSUP performs the second test, please take the submission dates in the Czech Republic or Slovak Republic into account. Naktuinbouw must have time enough to send the material to these locations before these submission dates. The submission dates for CZ and SK are listed on website of the CPVO.