An agricultural product burying unit for an agricultural machine, configured so as to be mounted in a fixed manner relative to the agricultural machine, the burying unit including a reference device, a burying device, the reference device being configured to rest on the ground in the work configuration and form a depth positioning reference for the burying device, the burying device being configured to bury an agricultural product in work configuration, the reference device being configured to be mounted in an articulated manner directly on a reference which is fixed relative to the agricultural machine, wherein the reference device is configured to weigh on the burying device in work configuration, the reference device forming a first device of applying a bearing force on the burying device.
