Since 2016 Naktuinbouw and Japan work together on the harmonisation of DUS testing. The aim is to accept and take over Plant Breeders’ Rights reports. Part of this collaboration is the development of joint Calibration Manuals, based on the Japanese Testing Manuals and Dutch Calibration books. This will result in ten Calibration Manuals.
In 2020 Naktuinbouw and NCSS (residing under NARO, the Japanese Institute for Agricultural Sciences) will develop the final two Manuals, for chrysanthemum and tulip.