Abstract: Soil conditioner injection systems that can provide a variety of benefits, including the fast and efficient amendment of soil with soil conditioner without requiring tillage and in a manner that significantly reduces or eliminates any inadvertent runoff of the soil conditioner, for example, from rain. In some examples the soil conditioner injection systems of the present disclosure include soil conditioner injectors that include a soil plug remover configured to remove a first volume of soil from a first location and a sleeved hammer configured to form a recess in soil and inject soil conditioner into the recess.