The object of the present invention is an improved process for the phytoprotection of plant seeds, wherein there is simultaneously applied to the seeds, on the one hand, at least one first liquid composition containing at least one phytoprotection product, and on the other hand, a foam formed from a second composition, containing at least one nonphytotoxic foaming agent. The invention also relates to phytoprotection apparatus comprising a foam-making apparatus which allows the process to be carried out.
