The device has a rotary mounted wheel for processing the device on the ground. One or multiple injection elements (1) are attached to the circumference of the device for inserting the liquid substances in the soil. The injection elements are flat. The injection elements have an insert element (4) for feeding the liquid substances. The insert element is made from corrosion and acid-resistant material, particularly from stainless steel, aluminum, aluminum alloy, plastic or rubber. A pressing device has a spring for pressing arranged in a shaft.
