The Granette trayseeder is a nozzle seeder with self-cleaning nozzles, which sows direct into the cell of the tray. Because of the many possible adjustments at the seeder a very high accuracy is possible.   The vibrating nozzle bar will be positioned above the vibrating seed hopper, where the seeds will be picked up.   By adjusting the time for picking up the seed, the amount of vacuum and the vibration intensity of the seed hopper and nozzle bar a perfect result can be achieved.   After picking up the seeds, the nozzle bar will be above the positioned tray, where the vacuum at the nozzles will be released so the seeds will drop into the centre of the cells of the tray. After dropping the seed, as the nozzle bar returns to the seed hopper, the nozzles are cleaned out by needles that come out of the nozzle-ends.