A box-shaped frame (1) is fitted with two wheels (2) and a tow bar (3). Several injection units (4) are positioned parallel along a transversal carrying element. Each of the units (4) is assembled of two arms (5, 6), swivel mounted to each other and to the frame (1) with their rear end. Liquid fertilizer or a plant protection fluid is guided into the lower pipe (6) and released through the tip (9) into the soil. The movable joints (7, 8) and the two springs (10, 11) facilitate the provision of a short period of time for the injecting process before the tip (9) is pulled out and moved to the next plant while the frame (1) is continuously moved.
