The object of the invention is a device for spraying young plants (16), in particular of plants of vines, comprising an agricultural machine (10) with a reservoir (58) containing a fluid (60), which is movable between the rows r of plants, a marking (18) being associated with each plant, characterized in that it comprises means (20p) for deep with at least one arm (22), an actuator associated with each arm whose position can vary circumferentially between a first retracted position and a second position, this arm (22) being equipped with a sprinkler head deep comprising a blade of the opening and an injector of the fluid with a power supply provided with a solenoid valve for opening / closing of the supply of the injector.
