The liquid-manure injector is built on a disc-harrow frame. The base configuration includes a 600 mm tube roller, 560 mm notched discs, and 50 mm diameter PVC rubber hoses. Injector tines positioned behind the front disc row ensure thorough mixing with the soil. The unit can be equipped with support wheels at the front or rear, and with different roller types. It can be hitched directly to the tractor or to a slurry tanker.